1 /* 2 * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 /* 27 * This file is available under and governed by the GNU General Public 28 * License version 2 only, as published by the Free Software Foundation. 29 * However, the following notice accompanied the original version of this 30 * file: 31 * 32 * Copyright (c) 2008-2012, Stephen Colebourne & Michael Nascimento Santos 33 * 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions are met: 38 * 39 * * Redistributions of source code must retain the above copyright notice, 40 * this list of conditions and the following disclaimer. 41 * 42 * * Redistributions in binary form must reproduce the above copyright notice, 43 * this list of conditions and the following disclaimer in the documentation 44 * and/or other materials provided with the distribution. 45 * 46 * * Neither the name of JSR-310 nor the names of its contributors 47 * may be used to endorse or promote products derived from this software 48 * without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 54 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 55 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 56 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 57 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 58 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 59 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 60 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 61 */ 62 package java.time.format; 63 64 import static java.time.temporal.ChronoField.DAY_OF_MONTH; 65 import static java.time.temporal.ChronoField.HOUR_OF_DAY; 66 import static java.time.temporal.ChronoField.INSTANT_SECONDS; 67 import static java.time.temporal.ChronoField.MINUTE_OF_HOUR; 68 import static java.time.temporal.ChronoField.MONTH_OF_YEAR; 69 import static java.time.temporal.ChronoField.NANO_OF_SECOND; 70 import static java.time.temporal.ChronoField.OFFSET_SECONDS; 71 import static java.time.temporal.ChronoField.SECOND_OF_MINUTE; 72 import static java.time.temporal.ChronoField.YEAR; 73 import static java.time.temporal.ChronoField.ERA; 74 75 import java.lang.ref.SoftReference; 76 import java.math.BigDecimal; 77 import java.math.BigInteger; 78 import java.math.RoundingMode; 79 import java.text.ParsePosition; 80 import java.time.DateTimeException; 81 import java.time.Instant; 82 import java.time.LocalDate; 83 import java.time.LocalDateTime; 84 import java.time.LocalTime; 85 import java.time.ZoneId; 86 import java.time.ZoneOffset; 87 import java.time.chrono.ChronoLocalDate; 88 import java.time.chrono.ChronoLocalDateTime; 89 import java.time.chrono.Chronology; 90 import java.time.chrono.Era; 91 import java.time.chrono.IsoChronology; 92 import java.time.format.DateTimeTextProvider.LocaleStore; 93 import java.time.temporal.ChronoField; 94 import java.time.temporal.IsoFields; 95 import java.time.temporal.JulianFields; 96 import java.time.temporal.TemporalAccessor; 97 import java.time.temporal.TemporalField; 98 import java.time.temporal.TemporalQueries; 99 import java.time.temporal.TemporalQuery; 100 import java.time.temporal.ValueRange; 101 import java.time.temporal.WeekFields; 102 import java.time.zone.ZoneRulesProvider; 103 import java.util.AbstractMap.SimpleImmutableEntry; 104 import java.util.ArrayList; 105 import java.util.Arrays; 106 import java.util.Collections; 107 import java.util.Comparator; 108 import java.util.HashMap; 109 import java.util.HashSet; 110 import java.util.Iterator; 111 import java.util.LinkedHashMap; 112 import java.util.List; 113 import java.util.Locale; 114 import java.util.Map; 115 import java.util.Map.Entry; 116 import java.util.Objects; 117 import java.util.Set; 118 import java.util.TimeZone; 119 import java.util.concurrent.ConcurrentHashMap; 120 import java.util.concurrent.ConcurrentMap; 121 122 import sun.text.spi.JavaTimeDateTimePatternProvider; 123 import sun.util.locale.provider.CalendarDataUtility; 124 import sun.util.locale.provider.LocaleProviderAdapter; 125 import sun.util.locale.provider.LocaleResources; 126 import sun.util.locale.provider.TimeZoneNameUtility; 127 128 /** 129 * Builder to create date-time formatters. 130 * <p> 131 * This allows a {@code DateTimeFormatter} to be created. 132 * All date-time formatters are created ultimately using this builder. 133 * <p> 134 * The basic elements of date-time can all be added: 135 * <ul> 136 * <li>Value - a numeric value</li> 137 * <li>Fraction - a fractional value including the decimal place. Always use this when 138 * outputting fractions to ensure that the fraction is parsed correctly</li> 139 * <li>Text - the textual equivalent for the value</li> 140 * <li>OffsetId/Offset - the {@linkplain ZoneOffset zone offset}</li> 141 * <li>ZoneId - the {@linkplain ZoneId time-zone} id</li> 142 * <li>ZoneText - the name of the time-zone</li> 143 * <li>ChronologyId - the {@linkplain Chronology chronology} id</li> 144 * <li>ChronologyText - the name of the chronology</li> 145 * <li>Literal - a text literal</li> 146 * <li>Nested and Optional - formats can be nested or made optional</li> 147 * </ul> 148 * In addition, any of the elements may be decorated by padding, either with spaces or any other character. 149 * <p> 150 * Finally, a shorthand pattern, mostly compatible with {@code java.text.SimpleDateFormat SimpleDateFormat} 151 * can be used, see {@link #appendPattern(String)}. 152 * In practice, this simply parses the pattern and calls other methods on the builder. 153 * 154 * @implSpec 155 * This class is a mutable builder intended for use from a single thread. 156 * 157 * @since 1.8 158 */ 159 public final class DateTimeFormatterBuilder { 160 161 /** 162 * Query for a time-zone that is region-only. 163 */ 164 private static final TemporalQuery<ZoneId> QUERY_REGION_ONLY = (temporal) -> { 165 ZoneId zone = temporal.query(TemporalQueries.zoneId()); 166 return (zone != null && zone instanceof ZoneOffset == false ? zone : null); 167 }; 168 169 /** 170 * The currently active builder, used by the outermost builder. 171 */ 172 private DateTimeFormatterBuilder active = this; 173 /** 174 * The parent builder, null for the outermost builder. 175 */ 176 private final DateTimeFormatterBuilder parent; 177 /** 178 * The list of printers that will be used. 179 */ 180 private final List<DateTimePrinterParser> printerParsers = new ArrayList<>(); 181 /** 182 * Whether this builder produces an optional formatter. 183 */ 184 private final boolean optional; 185 /** 186 * The width to pad the next field to. 187 */ 188 private int padNextWidth; 189 /** 190 * The character to pad the next field with. 191 */ 192 private char padNextChar; 193 /** 194 * The index of the last variable width value parser. 195 */ 196 private int valueParserIndex = -1; 197 198 /** 199 * Gets the formatting pattern for date and time styles for a locale and chronology. 200 * The locale and chronology are used to lookup the locale specific format 201 * for the requested dateStyle and/or timeStyle. 202 * <p> 203 * If the locale contains the "rg" (region override) 204 * <a href="../../util/Locale.html#def_locale_extension">Unicode extensions</a>, 205 * the formatting pattern is overridden with the one appropriate for the region. 206 * 207 * @param dateStyle the FormatStyle for the date, null for time-only pattern 208 * @param timeStyle the FormatStyle for the time, null for date-only pattern 209 * @param chrono the Chronology, non-null 210 * @param locale the locale, non-null 211 * @return the locale and Chronology specific formatting pattern 212 * @throws IllegalArgumentException if both dateStyle and timeStyle are null 213 */ 214 public static String getLocalizedDateTimePattern(FormatStyle dateStyle, FormatStyle timeStyle, 215 Chronology chrono, Locale locale) { 216 Objects.requireNonNull(locale, "locale"); 217 Objects.requireNonNull(chrono, "chrono"); 218 if (dateStyle == null && timeStyle == null) { 219 throw new IllegalArgumentException("Either dateStyle or timeStyle must be non-null"); 220 } 221 LocaleProviderAdapter adapter = LocaleProviderAdapter.getAdapter(JavaTimeDateTimePatternProvider.class, locale); 222 JavaTimeDateTimePatternProvider provider = adapter.getJavaTimeDateTimePatternProvider(); 223 String pattern = provider.getJavaTimeDateTimePattern(convertStyle(timeStyle), 224 convertStyle(dateStyle), chrono.getCalendarType(), 225 CalendarDataUtility.findRegionOverride(locale)); 226 return pattern; 227 } 228 229 /** 230 * Converts the given FormatStyle to the java.text.DateFormat style. 231 * 232 * @param style the FormatStyle style 233 * @return the int style, or -1 if style is null, indicating un-required 234 */ 235 private static int convertStyle(FormatStyle style) { 236 if (style == null) { 237 return -1; 238 } 239 return style.ordinal(); // indices happen to align 240 } 241 242 /** 243 * Constructs a new instance of the builder. 244 */ 245 public DateTimeFormatterBuilder() { 246 super(); 247 parent = null; 248 optional = false; 249 } 250 251 /** 252 * Constructs a new instance of the builder. 253 * 254 * @param parent the parent builder, not null 255 * @param optional whether the formatter is optional, not null 256 */ 257 private DateTimeFormatterBuilder(DateTimeFormatterBuilder parent, boolean optional) { 258 super(); 259 this.parent = parent; 260 this.optional = optional; 261 } 262 263 //----------------------------------------------------------------------- 264 /** 265 * Changes the parse style to be case sensitive for the remainder of the formatter. 266 * <p> 267 * Parsing can be case sensitive or insensitive - by default it is case sensitive. 268 * This method allows the case sensitivity setting of parsing to be changed. 269 * <p> 270 * Calling this method changes the state of the builder such that all 271 * subsequent builder method calls will parse text in case sensitive mode. 272 * See {@link #parseCaseInsensitive} for the opposite setting. 273 * The parse case sensitive/insensitive methods may be called at any point 274 * in the builder, thus the parser can swap between case parsing modes 275 * multiple times during the parse. 276 * <p> 277 * Since the default is case sensitive, this method should only be used after 278 * a previous call to {@code #parseCaseInsensitive}. 279 * 280 * @return this, for chaining, not null 281 */ 282 public DateTimeFormatterBuilder parseCaseSensitive() { 283 appendInternal(SettingsParser.SENSITIVE); 284 return this; 285 } 286 287 /** 288 * Changes the parse style to be case insensitive for the remainder of the formatter. 289 * <p> 290 * Parsing can be case sensitive or insensitive - by default it is case sensitive. 291 * This method allows the case sensitivity setting of parsing to be changed. 292 * <p> 293 * Calling this method changes the state of the builder such that all 294 * subsequent builder method calls will parse text in case insensitive mode. 295 * See {@link #parseCaseSensitive()} for the opposite setting. 296 * The parse case sensitive/insensitive methods may be called at any point 297 * in the builder, thus the parser can swap between case parsing modes 298 * multiple times during the parse. 299 * 300 * @return this, for chaining, not null 301 */ 302 public DateTimeFormatterBuilder parseCaseInsensitive() { 303 appendInternal(SettingsParser.INSENSITIVE); 304 return this; 305 } 306 307 //----------------------------------------------------------------------- 308 /** 309 * Changes the parse style to be strict for the remainder of the formatter. 310 * <p> 311 * Parsing can be strict or lenient - by default its strict. 312 * This controls the degree of flexibility in matching the text and sign styles. 313 * <p> 314 * When used, this method changes the parsing to be strict from this point onwards. 315 * As strict is the default, this is normally only needed after calling {@link #parseLenient()}. 316 * The change will remain in force until the end of the formatter that is eventually 317 * constructed or until {@code parseLenient} is called. 318 * 319 * @return this, for chaining, not null 320 */ 321 public DateTimeFormatterBuilder parseStrict() { 322 appendInternal(SettingsParser.STRICT); 323 return this; 324 } 325 326 /** 327 * Changes the parse style to be lenient for the remainder of the formatter. 328 * Note that case sensitivity is set separately to this method. 329 * <p> 330 * Parsing can be strict or lenient - by default its strict. 331 * This controls the degree of flexibility in matching the text and sign styles. 332 * Applications calling this method should typically also call {@link #parseCaseInsensitive()}. 333 * <p> 334 * When used, this method changes the parsing to be lenient from this point onwards. 335 * The change will remain in force until the end of the formatter that is eventually 336 * constructed or until {@code parseStrict} is called. 337 * 338 * @return this, for chaining, not null 339 */ 340 public DateTimeFormatterBuilder parseLenient() { 341 appendInternal(SettingsParser.LENIENT); 342 return this; 343 } 344 345 //----------------------------------------------------------------------- 346 /** 347 * Appends a default value for a field to the formatter for use in parsing. 348 * <p> 349 * This appends an instruction to the builder to inject a default value 350 * into the parsed result. This is especially useful in conjunction with 351 * optional parts of the formatter. 352 * <p> 353 * For example, consider a formatter that parses the year, followed by 354 * an optional month, with a further optional day-of-month. Using such a 355 * formatter would require the calling code to check whether a full date, 356 * year-month or just a year had been parsed. This method can be used to 357 * default the month and day-of-month to a sensible value, such as the 358 * first of the month, allowing the calling code to always get a date. 359 * <p> 360 * During formatting, this method has no effect. 361 * <p> 362 * During parsing, the current state of the parse is inspected. 363 * If the specified field has no associated value, because it has not been 364 * parsed successfully at that point, then the specified value is injected 365 * into the parse result. Injection is immediate, thus the field-value pair 366 * will be visible to any subsequent elements in the formatter. 367 * As such, this method is normally called at the end of the builder. 368 * 369 * @param field the field to default the value of, not null 370 * @param value the value to default the field to 371 * @return this, for chaining, not null 372 */ 373 public DateTimeFormatterBuilder parseDefaulting(TemporalField field, long value) { 374 Objects.requireNonNull(field, "field"); 375 appendInternal(new DefaultValueParser(field, value)); 376 return this; 377 } 378 379 //----------------------------------------------------------------------- 380 /** 381 * Appends the value of a date-time field to the formatter using a normal 382 * output style. 383 * <p> 384 * The value of the field will be output during a format. 385 * If the value cannot be obtained then an exception will be thrown. 386 * <p> 387 * The value will be printed as per the normal format of an integer value. 388 * Only negative numbers will be signed. No padding will be added. 389 * <p> 390 * The parser for a variable width value such as this normally behaves greedily, 391 * requiring one digit, but accepting as many digits as possible. 392 * This behavior can be affected by 'adjacent value parsing'. 393 * See {@link #appendValue(java.time.temporal.TemporalField, int)} for full details. 394 * 395 * @param field the field to append, not null 396 * @return this, for chaining, not null 397 */ 398 public DateTimeFormatterBuilder appendValue(TemporalField field) { 399 Objects.requireNonNull(field, "field"); 400 appendValue(new NumberPrinterParser(field, 1, 19, SignStyle.NORMAL)); 401 return this; 402 } 403 404 /** 405 * Appends the value of a date-time field to the formatter using a fixed 406 * width, zero-padded approach. 407 * <p> 408 * The value of the field will be output during a format. 409 * If the value cannot be obtained then an exception will be thrown. 410 * <p> 411 * The value will be zero-padded on the left. If the size of the value 412 * means that it cannot be printed within the width then an exception is thrown. 413 * If the value of the field is negative then an exception is thrown during formatting. 414 * <p> 415 * This method supports a special technique of parsing known as 'adjacent value parsing'. 416 * This technique solves the problem where a value, variable or fixed width, is followed by one or more 417 * fixed length values. The standard parser is greedy, and thus it would normally 418 * steal the digits that are needed by the fixed width value parsers that follow the 419 * variable width one. 420 * <p> 421 * No action is required to initiate 'adjacent value parsing'. 422 * When a call to {@code appendValue} is made, the builder 423 * enters adjacent value parsing setup mode. If the immediately subsequent method 424 * call or calls on the same builder are for a fixed width value, then the parser will reserve 425 * space so that the fixed width values can be parsed. 426 * <p> 427 * For example, consider {@code builder.appendValue(YEAR).appendValue(MONTH_OF_YEAR, 2);} 428 * The year is a variable width parse of between 1 and 19 digits. 429 * The month is a fixed width parse of 2 digits. 430 * Because these were appended to the same builder immediately after one another, 431 * the year parser will reserve two digits for the month to parse. 432 * Thus, the text '201106' will correctly parse to a year of 2011 and a month of 6. 433 * Without adjacent value parsing, the year would greedily parse all six digits and leave 434 * nothing for the month. 435 * <p> 436 * Adjacent value parsing applies to each set of fixed width not-negative values in the parser 437 * that immediately follow any kind of value, variable or fixed width. 438 * Calling any other append method will end the setup of adjacent value parsing. 439 * Thus, in the unlikely event that you need to avoid adjacent value parsing behavior, 440 * simply add the {@code appendValue} to another {@code DateTimeFormatterBuilder} 441 * and add that to this builder. 442 * <p> 443 * If adjacent parsing is active, then parsing must match exactly the specified 444 * number of digits in both strict and lenient modes. 445 * In addition, no positive or negative sign is permitted. 446 * 447 * @param field the field to append, not null 448 * @param width the width of the printed field, from 1 to 19 449 * @return this, for chaining, not null 450 * @throws IllegalArgumentException if the width is invalid 451 */ 452 public DateTimeFormatterBuilder appendValue(TemporalField field, int width) { 453 Objects.requireNonNull(field, "field"); 454 if (width < 1 || width > 19) { 455 throw new IllegalArgumentException("The width must be from 1 to 19 inclusive but was " + width); 456 } 457 NumberPrinterParser pp = new NumberPrinterParser(field, width, width, SignStyle.NOT_NEGATIVE); 458 appendValue(pp); 459 return this; 460 } 461 462 /** 463 * Appends the value of a date-time field to the formatter providing full 464 * control over formatting. 465 * <p> 466 * The value of the field will be output during a format. 467 * If the value cannot be obtained then an exception will be thrown. 468 * <p> 469 * This method provides full control of the numeric formatting, including 470 * zero-padding and the positive/negative sign. 471 * <p> 472 * The parser for a variable width value such as this normally behaves greedily, 473 * accepting as many digits as possible. 474 * This behavior can be affected by 'adjacent value parsing'. 475 * See {@link #appendValue(java.time.temporal.TemporalField, int)} for full details. 476 * <p> 477 * In strict parsing mode, the minimum number of parsed digits is {@code minWidth} 478 * and the maximum is {@code maxWidth}. 479 * In lenient parsing mode, the minimum number of parsed digits is one 480 * and the maximum is 19 (except as limited by adjacent value parsing). 481 * <p> 482 * If this method is invoked with equal minimum and maximum widths and a sign style of 483 * {@code NOT_NEGATIVE} then it delegates to {@code appendValue(TemporalField,int)}. 484 * In this scenario, the formatting and parsing behavior described there occur. 485 * 486 * @param field the field to append, not null 487 * @param minWidth the minimum field width of the printed field, from 1 to 19 488 * @param maxWidth the maximum field width of the printed field, from 1 to 19 489 * @param signStyle the positive/negative output style, not null 490 * @return this, for chaining, not null 491 * @throws IllegalArgumentException if the widths are invalid 492 */ 493 public DateTimeFormatterBuilder appendValue( 494 TemporalField field, int minWidth, int maxWidth, SignStyle signStyle) { 495 if (minWidth == maxWidth && signStyle == SignStyle.NOT_NEGATIVE) { 496 return appendValue(field, maxWidth); 497 } 498 Objects.requireNonNull(field, "field"); 499 Objects.requireNonNull(signStyle, "signStyle"); 500 if (minWidth < 1 || minWidth > 19) { 501 throw new IllegalArgumentException("The minimum width must be from 1 to 19 inclusive but was " + minWidth); 502 } 503 if (maxWidth < 1 || maxWidth > 19) { 504 throw new IllegalArgumentException("The maximum width must be from 1 to 19 inclusive but was " + maxWidth); 505 } 506 if (maxWidth < minWidth) { 507 throw new IllegalArgumentException("The maximum width must exceed or equal the minimum width but " + 508 maxWidth + " < " + minWidth); 509 } 510 NumberPrinterParser pp = new NumberPrinterParser(field, minWidth, maxWidth, signStyle); 511 appendValue(pp); 512 return this; 513 } 514 515 //----------------------------------------------------------------------- 516 /** 517 * Appends the reduced value of a date-time field to the formatter. 518 * <p> 519 * Since fields such as year vary by chronology, it is recommended to use the 520 * {@link #appendValueReduced(TemporalField, int, int, ChronoLocalDate)} date} 521 * variant of this method in most cases. This variant is suitable for 522 * simple fields or working with only the ISO chronology. 523 * <p> 524 * For formatting, the {@code width} and {@code maxWidth} are used to 525 * determine the number of characters to format. 526 * If they are equal then the format is fixed width. 527 * If the value of the field is within the range of the {@code baseValue} using 528 * {@code width} characters then the reduced value is formatted otherwise the value is 529 * truncated to fit {@code maxWidth}. 530 * The rightmost characters are output to match the width, left padding with zero. 531 * <p> 532 * For strict parsing, the number of characters allowed by {@code width} to {@code maxWidth} are parsed. 533 * For lenient parsing, the number of characters must be at least 1 and less than 10. 534 * If the number of digits parsed is equal to {@code width} and the value is positive, 535 * the value of the field is computed to be the first number greater than 536 * or equal to the {@code baseValue} with the same least significant characters, 537 * otherwise the value parsed is the field value. 538 * This allows a reduced value to be entered for values in range of the baseValue 539 * and width and absolute values can be entered for values outside the range. 540 * <p> 541 * For example, a base value of {@code 1980} and a width of {@code 2} will have 542 * valid values from {@code 1980} to {@code 2079}. 543 * During parsing, the text {@code "12"} will result in the value {@code 2012} as that 544 * is the value within the range where the last two characters are "12". 545 * By contrast, parsing the text {@code "1915"} will result in the value {@code 1915}. 546 * 547 * @param field the field to append, not null 548 * @param width the field width of the printed and parsed field, from 1 to 10 549 * @param maxWidth the maximum field width of the printed field, from 1 to 10 550 * @param baseValue the base value of the range of valid values 551 * @return this, for chaining, not null 552 * @throws IllegalArgumentException if the width or base value is invalid 553 */ 554 public DateTimeFormatterBuilder appendValueReduced(TemporalField field, 555 int width, int maxWidth, int baseValue) { 556 Objects.requireNonNull(field, "field"); 557 ReducedPrinterParser pp = new ReducedPrinterParser(field, width, maxWidth, baseValue, null); 558 appendValue(pp); 559 return this; 560 } 561 562 /** 563 * Appends the reduced value of a date-time field to the formatter. 564 * <p> 565 * This is typically used for formatting and parsing a two digit year. 566 * <p> 567 * The base date is used to calculate the full value during parsing. 568 * For example, if the base date is 1950-01-01 then parsed values for 569 * a two digit year parse will be in the range 1950-01-01 to 2049-12-31. 570 * Only the year would be extracted from the date, thus a base date of 571 * 1950-08-25 would also parse to the range 1950-01-01 to 2049-12-31. 572 * This behavior is necessary to support fields such as week-based-year 573 * or other calendar systems where the parsed value does not align with 574 * standard ISO years. 575 * <p> 576 * The exact behavior is as follows. Parse the full set of fields and 577 * determine the effective chronology using the last chronology if 578 * it appears more than once. Then convert the base date to the 579 * effective chronology. Then extract the specified field from the 580 * chronology-specific base date and use it to determine the 581 * {@code baseValue} used below. 582 * <p> 583 * For formatting, the {@code width} and {@code maxWidth} are used to 584 * determine the number of characters to format. 585 * If they are equal then the format is fixed width. 586 * If the value of the field is within the range of the {@code baseValue} using 587 * {@code width} characters then the reduced value is formatted otherwise the value is 588 * truncated to fit {@code maxWidth}. 589 * The rightmost characters are output to match the width, left padding with zero. 590 * <p> 591 * For strict parsing, the number of characters allowed by {@code width} to {@code maxWidth} are parsed. 592 * For lenient parsing, the number of characters must be at least 1 and less than 10. 593 * If the number of digits parsed is equal to {@code width} and the value is positive, 594 * the value of the field is computed to be the first number greater than 595 * or equal to the {@code baseValue} with the same least significant characters, 596 * otherwise the value parsed is the field value. 597 * This allows a reduced value to be entered for values in range of the baseValue 598 * and width and absolute values can be entered for values outside the range. 599 * <p> 600 * For example, a base value of {@code 1980} and a width of {@code 2} will have 601 * valid values from {@code 1980} to {@code 2079}. 602 * During parsing, the text {@code "12"} will result in the value {@code 2012} as that 603 * is the value within the range where the last two characters are "12". 604 * By contrast, parsing the text {@code "1915"} will result in the value {@code 1915}. 605 * 606 * @param field the field to append, not null 607 * @param width the field width of the printed and parsed field, from 1 to 10 608 * @param maxWidth the maximum field width of the printed field, from 1 to 10 609 * @param baseDate the base date used to calculate the base value for the range 610 * of valid values in the parsed chronology, not null 611 * @return this, for chaining, not null 612 * @throws IllegalArgumentException if the width or base value is invalid 613 */ 614 public DateTimeFormatterBuilder appendValueReduced( 615 TemporalField field, int width, int maxWidth, ChronoLocalDate baseDate) { 616 Objects.requireNonNull(field, "field"); 617 Objects.requireNonNull(baseDate, "baseDate"); 618 ReducedPrinterParser pp = new ReducedPrinterParser(field, width, maxWidth, 0, baseDate); 619 appendValue(pp); 620 return this; 621 } 622 623 /** 624 * Appends a fixed or variable width printer-parser handling adjacent value mode. 625 * If a PrinterParser is not active then the new PrinterParser becomes 626 * the active PrinterParser. 627 * Otherwise, the active PrinterParser is modified depending on the new PrinterParser. 628 * If the new PrinterParser is fixed width and has sign style {@code NOT_NEGATIVE} 629 * then its width is added to the active PP and 630 * the new PrinterParser is forced to be fixed width. 631 * If the new PrinterParser is variable width, the active PrinterParser is changed 632 * to be fixed width and the new PrinterParser becomes the active PP. 633 * 634 * @param pp the printer-parser, not null 635 * @return this, for chaining, not null 636 */ 637 private DateTimeFormatterBuilder appendValue(NumberPrinterParser pp) { 638 if (active.valueParserIndex >= 0) { 639 final int activeValueParser = active.valueParserIndex; 640 641 // adjacent parsing mode, update setting in previous parsers 642 NumberPrinterParser basePP = (NumberPrinterParser) active.printerParsers.get(activeValueParser); 643 if (pp.minWidth == pp.maxWidth && pp.signStyle == SignStyle.NOT_NEGATIVE) { 644 // Append the width to the subsequentWidth of the active parser 645 basePP = basePP.withSubsequentWidth(pp.maxWidth); 646 // Append the new parser as a fixed width 647 appendInternal(pp.withFixedWidth()); 648 // Retain the previous active parser 649 active.valueParserIndex = activeValueParser; 650 } else { 651 // Modify the active parser to be fixed width 652 basePP = basePP.withFixedWidth(); 653 // The new parser becomes the mew active parser 654 active.valueParserIndex = appendInternal(pp); 655 } 656 // Replace the modified parser with the updated one 657 active.printerParsers.set(activeValueParser, basePP); 658 } else { 659 // The new Parser becomes the active parser 660 active.valueParserIndex = appendInternal(pp); 661 } 662 return this; 663 } 664 665 //----------------------------------------------------------------------- 666 /** 667 * Appends the fractional value of a date-time field to the formatter. 668 * <p> 669 * The fractional value of the field will be output including the 670 * preceding decimal point. The preceding value is not output. 671 * For example, the second-of-minute value of 15 would be output as {@code .25}. 672 * <p> 673 * The width of the printed fraction can be controlled. Setting the 674 * minimum width to zero will cause no output to be generated. 675 * The printed fraction will have the minimum width necessary between 676 * the minimum and maximum widths - trailing zeroes are omitted. 677 * No rounding occurs due to the maximum width - digits are simply dropped. 678 * <p> 679 * When parsing in strict mode, the number of parsed digits must be between 680 * the minimum and maximum width. In strict mode, if the minimum and maximum widths 681 * are equal and there is no decimal point then the parser will 682 * participate in adjacent value parsing, see 683 * {@link appendValue(java.time.temporal.TemporalField, int)}. When parsing in lenient mode, 684 * the minimum width is considered to be zero and the maximum is nine. 685 * <p> 686 * If the value cannot be obtained then an exception will be thrown. 687 * If the value is negative an exception will be thrown. 688 * If the field does not have a fixed set of valid values then an 689 * exception will be thrown. 690 * If the field value in the date-time to be printed is invalid it 691 * cannot be printed and an exception will be thrown. 692 * 693 * @param field the field to append, not null 694 * @param minWidth the minimum width of the field excluding the decimal point, from 0 to 9 695 * @param maxWidth the maximum width of the field excluding the decimal point, from 1 to 9 696 * @param decimalPoint whether to output the localized decimal point symbol 697 * @return this, for chaining, not null 698 * @throws IllegalArgumentException if the field has a variable set of valid values or 699 * either width is invalid 700 */ 701 public DateTimeFormatterBuilder appendFraction( 702 TemporalField field, int minWidth, int maxWidth, boolean decimalPoint) { 703 if (minWidth == maxWidth && decimalPoint == false) { 704 // adjacent parsing 705 appendValue(new FractionPrinterParser(field, minWidth, maxWidth, decimalPoint)); 706 } else { 707 appendInternal(new FractionPrinterParser(field, minWidth, maxWidth, decimalPoint)); 708 } 709 return this; 710 } 711 712 //----------------------------------------------------------------------- 713 /** 714 * Appends the text of a date-time field to the formatter using the full 715 * text style. 716 * <p> 717 * The text of the field will be output during a format. 718 * The value must be within the valid range of the field. 719 * If the value cannot be obtained then an exception will be thrown. 720 * If the field has no textual representation, then the numeric value will be used. 721 * <p> 722 * The value will be printed as per the normal format of an integer value. 723 * Only negative numbers will be signed. No padding will be added. 724 * 725 * @param field the field to append, not null 726 * @return this, for chaining, not null 727 */ 728 public DateTimeFormatterBuilder appendText(TemporalField field) { 729 return appendText(field, TextStyle.FULL); 730 } 731 732 /** 733 * Appends the text of a date-time field to the formatter. 734 * <p> 735 * The text of the field will be output during a format. 736 * The value must be within the valid range of the field. 737 * If the value cannot be obtained then an exception will be thrown. 738 * If the field has no textual representation, then the numeric value will be used. 739 * <p> 740 * The value will be printed as per the normal format of an integer value. 741 * Only negative numbers will be signed. No padding will be added. 742 * 743 * @param field the field to append, not null 744 * @param textStyle the text style to use, not null 745 * @return this, for chaining, not null 746 */ 747 public DateTimeFormatterBuilder appendText(TemporalField field, TextStyle textStyle) { 748 Objects.requireNonNull(field, "field"); 749 Objects.requireNonNull(textStyle, "textStyle"); 750 appendInternal(new TextPrinterParser(field, textStyle, DateTimeTextProvider.getInstance())); 751 return this; 752 } 753 754 /** 755 * Appends the text of a date-time field to the formatter using the specified 756 * map to supply the text. 757 * <p> 758 * The standard text outputting methods use the localized text in the JDK. 759 * This method allows that text to be specified directly. 760 * The supplied map is not validated by the builder to ensure that formatting or 761 * parsing is possible, thus an invalid map may throw an error during later use. 762 * <p> 763 * Supplying the map of text provides considerable flexibility in formatting and parsing. 764 * For example, a legacy application might require or supply the months of the 765 * year as "JNY", "FBY", "MCH" etc. These do not match the standard set of text 766 * for localized month names. Using this method, a map can be created which 767 * defines the connection between each value and the text: 768 * <pre> 769 * Map<Long, String> map = new HashMap<>(); 770 * map.put(1L, "JNY"); 771 * map.put(2L, "FBY"); 772 * map.put(3L, "MCH"); 773 * ... 774 * builder.appendText(MONTH_OF_YEAR, map); 775 * </pre> 776 * <p> 777 * Other uses might be to output the value with a suffix, such as "1st", "2nd", "3rd", 778 * or as Roman numerals "I", "II", "III", "IV". 779 * <p> 780 * During formatting, the value is obtained and checked that it is in the valid range. 781 * If text is not available for the value then it is output as a number. 782 * During parsing, the parser will match against the map of text and numeric values. 783 * 784 * @param field the field to append, not null 785 * @param textLookup the map from the value to the text 786 * @return this, for chaining, not null 787 */ 788 public DateTimeFormatterBuilder appendText(TemporalField field, Map<Long, String> textLookup) { 789 Objects.requireNonNull(field, "field"); 790 Objects.requireNonNull(textLookup, "textLookup"); 791 Map<Long, String> copy = new LinkedHashMap<>(textLookup); 792 Map<TextStyle, Map<Long, String>> map = Collections.singletonMap(TextStyle.FULL, copy); 793 final LocaleStore store = new LocaleStore(map); 794 DateTimeTextProvider provider = new DateTimeTextProvider() { 795 @Override 796 public String getText(Chronology chrono, TemporalField field, 797 long value, TextStyle style, Locale locale) { 798 return store.getText(value, style); 799 } 800 @Override 801 public String getText(TemporalField field, long value, TextStyle style, Locale locale) { 802 return store.getText(value, style); 803 } 804 @Override 805 public Iterator<Entry<String, Long>> getTextIterator(Chronology chrono, 806 TemporalField field, TextStyle style, Locale locale) { 807 return store.getTextIterator(style); 808 } 809 @Override 810 public Iterator<Entry<String, Long>> getTextIterator(TemporalField field, 811 TextStyle style, Locale locale) { 812 return store.getTextIterator(style); 813 } 814 }; 815 appendInternal(new TextPrinterParser(field, TextStyle.FULL, provider)); 816 return this; 817 } 818 819 //----------------------------------------------------------------------- 820 /** 821 * Appends an instant using ISO-8601 to the formatter, formatting fractional 822 * digits in groups of three. 823 * <p> 824 * Instants have a fixed output format. 825 * They are converted to a date-time with a zone-offset of UTC and formatted 826 * using the standard ISO-8601 format. 827 * With this method, formatting nano-of-second outputs zero, three, six 828 * or nine digits as necessary. 829 * The localized decimal style is not used. 830 * <p> 831 * The instant is obtained using {@link ChronoField#INSTANT_SECONDS INSTANT_SECONDS} 832 * and optionally {@code NANO_OF_SECOND}. The value of {@code INSTANT_SECONDS} 833 * may be outside the maximum range of {@code LocalDateTime}. 834 * <p> 835 * The {@linkplain ResolverStyle resolver style} has no effect on instant parsing. 836 * The end-of-day time of '24:00' is handled as midnight at the start of the following day. 837 * The leap-second time of '23:59:59' is handled to some degree, see 838 * {@link DateTimeFormatter#parsedLeapSecond()} for full details. 839 * <p> 840 * An alternative to this method is to format/parse the instant as a single 841 * epoch-seconds value. That is achieved using {@code appendValue(INSTANT_SECONDS)}. 842 * 843 * @return this, for chaining, not null 844 */ 845 public DateTimeFormatterBuilder appendInstant() { 846 appendInternal(new InstantPrinterParser(-2)); 847 return this; 848 } 849 850 /** 851 * Appends an instant using ISO-8601 to the formatter with control over 852 * the number of fractional digits. 853 * <p> 854 * Instants have a fixed output format, although this method provides some 855 * control over the fractional digits. They are converted to a date-time 856 * with a zone-offset of UTC and printed using the standard ISO-8601 format. 857 * The localized decimal style is not used. 858 * <p> 859 * The {@code fractionalDigits} parameter allows the output of the fractional 860 * second to be controlled. Specifying zero will cause no fractional digits 861 * to be output. From 1 to 9 will output an increasing number of digits, using 862 * zero right-padding if necessary. The special value -1 is used to output as 863 * many digits as necessary to avoid any trailing zeroes. 864 * <p> 865 * When parsing in strict mode, the number of parsed digits must match the 866 * fractional digits. When parsing in lenient mode, any number of fractional 867 * digits from zero to nine are accepted. 868 * <p> 869 * The instant is obtained using {@link ChronoField#INSTANT_SECONDS INSTANT_SECONDS} 870 * and optionally {@code NANO_OF_SECOND}. The value of {@code INSTANT_SECONDS} 871 * may be outside the maximum range of {@code LocalDateTime}. 872 * <p> 873 * The {@linkplain ResolverStyle resolver style} has no effect on instant parsing. 874 * The end-of-day time of '24:00' is handled as midnight at the start of the following day. 875 * The leap-second time of '23:59:60' is handled to some degree, see 876 * {@link DateTimeFormatter#parsedLeapSecond()} for full details. 877 * <p> 878 * An alternative to this method is to format/parse the instant as a single 879 * epoch-seconds value. That is achieved using {@code appendValue(INSTANT_SECONDS)}. 880 * 881 * @param fractionalDigits the number of fractional second digits to format with, 882 * from 0 to 9, or -1 to use as many digits as necessary 883 * @return this, for chaining, not null 884 * @throws IllegalArgumentException if the number of fractional digits is invalid 885 */ 886 public DateTimeFormatterBuilder appendInstant(int fractionalDigits) { 887 if (fractionalDigits < -1 || fractionalDigits > 9) { 888 throw new IllegalArgumentException("The fractional digits must be from -1 to 9 inclusive but was " + fractionalDigits); 889 } 890 appendInternal(new InstantPrinterParser(fractionalDigits)); 891 return this; 892 } 893 894 //----------------------------------------------------------------------- 895 /** 896 * Appends the zone offset, such as '+01:00', to the formatter. 897 * <p> 898 * This appends an instruction to format/parse the offset ID to the builder. 899 * This is equivalent to calling {@code appendOffset("+HH:mm:ss", "Z")}. 900 * See {@link #appendOffset(String, String)} for details on formatting 901 * and parsing. 902 * 903 * @return this, for chaining, not null 904 */ 905 public DateTimeFormatterBuilder appendOffsetId() { 906 appendInternal(OffsetIdPrinterParser.INSTANCE_ID_Z); 907 return this; 908 } 909 910 /** 911 * Appends the zone offset, such as '+01:00', to the formatter. 912 * <p> 913 * This appends an instruction to format/parse the offset ID to the builder. 914 * <p> 915 * During formatting, the offset is obtained using a mechanism equivalent 916 * to querying the temporal with {@link TemporalQueries#offset()}. 917 * It will be printed using the format defined below. 918 * If the offset cannot be obtained then an exception is thrown unless the 919 * section of the formatter is optional. 920 * <p> 921 * When parsing in strict mode, the input must contain the mandatory 922 * and optional elements are defined by the specified pattern. 923 * If the offset cannot be parsed then an exception is thrown unless 924 * the section of the formatter is optional. 925 * <p> 926 * When parsing in lenient mode, only the hours are mandatory - minutes 927 * and seconds are optional. The colons are required if the specified 928 * pattern contains a colon. If the specified pattern is "+HH", the 929 * presence of colons is determined by whether the character after the 930 * hour digits is a colon or not. 931 * If the offset cannot be parsed then an exception is thrown unless 932 * the section of the formatter is optional. 933 * <p> 934 * The format of the offset is controlled by a pattern which must be one 935 * of the following: 936 * <ul> 937 * <li>{@code +HH} - hour only, ignoring minute and second 938 * <li>{@code +HHmm} - hour, with minute if non-zero, ignoring second, no colon 939 * <li>{@code +HH:mm} - hour, with minute if non-zero, ignoring second, with colon 940 * <li>{@code +HHMM} - hour and minute, ignoring second, no colon 941 * <li>{@code +HH:MM} - hour and minute, ignoring second, with colon 942 * <li>{@code +HHMMss} - hour and minute, with second if non-zero, no colon 943 * <li>{@code +HH:MM:ss} - hour and minute, with second if non-zero, with colon 944 * <li>{@code +HHMMSS} - hour, minute and second, no colon 945 * <li>{@code +HH:MM:SS} - hour, minute and second, with colon 946 * <li>{@code +HHmmss} - hour, with minute if non-zero or with minute and 947 * second if non-zero, no colon 948 * <li>{@code +HH:mm:ss} - hour, with minute if non-zero or with minute and 949 * second if non-zero, with colon 950 * <li>{@code +H} - hour only, ignoring minute and second 951 * <li>{@code +Hmm} - hour, with minute if non-zero, ignoring second, no colon 952 * <li>{@code +H:mm} - hour, with minute if non-zero, ignoring second, with colon 953 * <li>{@code +HMM} - hour and minute, ignoring second, no colon 954 * <li>{@code +H:MM} - hour and minute, ignoring second, with colon 955 * <li>{@code +HMMss} - hour and minute, with second if non-zero, no colon 956 * <li>{@code +H:MM:ss} - hour and minute, with second if non-zero, with colon 957 * <li>{@code +HMMSS} - hour, minute and second, no colon 958 * <li>{@code +H:MM:SS} - hour, minute and second, with colon 959 * <li>{@code +Hmmss} - hour, with minute if non-zero or with minute and 960 * second if non-zero, no colon 961 * <li>{@code +H:mm:ss} - hour, with minute if non-zero or with minute and 962 * second if non-zero, with colon 963 * </ul> 964 * Patterns containing "HH" will format and parse a two digit hour, 965 * zero-padded if necessary. Patterns containing "H" will format with no 966 * zero-padding, and parse either one or two digits. 967 * In lenient mode, the parser will be greedy and parse the maximum digits possible. 968 * The "no offset" text controls what text is printed when the total amount of 969 * the offset fields to be output is zero. 970 * Example values would be 'Z', '+00:00', 'UTC' or 'GMT'. 971 * Three formats are accepted for parsing UTC - the "no offset" text, and the 972 * plus and minus versions of zero defined by the pattern. 973 * 974 * @param pattern the pattern to use, not null 975 * @param noOffsetText the text to use when the offset is zero, not null 976 * @return this, for chaining, not null 977 * @throws IllegalArgumentException if the pattern is invalid 978 */ 979 public DateTimeFormatterBuilder appendOffset(String pattern, String noOffsetText) { 980 appendInternal(new OffsetIdPrinterParser(pattern, noOffsetText)); 981 return this; 982 } 983 984 /** 985 * Appends the localized zone offset, such as 'GMT+01:00', to the formatter. 986 * <p> 987 * This appends a localized zone offset to the builder, the format of the 988 * localized offset is controlled by the specified {@link FormatStyle style} 989 * to this method: 990 * <ul> 991 * <li>{@link TextStyle#FULL full} - formats with localized offset text, such 992 * as 'GMT, 2-digit hour and minute field, optional second field if non-zero, 993 * and colon. 994 * <li>{@link TextStyle#SHORT short} - formats with localized offset text, 995 * such as 'GMT, hour without leading zero, optional 2-digit minute and 996 * second if non-zero, and colon. 997 * </ul> 998 * <p> 999 * During formatting, the offset is obtained using a mechanism equivalent 1000 * to querying the temporal with {@link TemporalQueries#offset()}. 1001 * If the offset cannot be obtained then an exception is thrown unless the 1002 * section of the formatter is optional. 1003 * <p> 1004 * During parsing, the offset is parsed using the format defined above. 1005 * If the offset cannot be parsed then an exception is thrown unless the 1006 * section of the formatter is optional. 1007 * 1008 * @param style the format style to use, not null 1009 * @return this, for chaining, not null 1010 * @throws IllegalArgumentException if style is neither {@link TextStyle#FULL 1011 * full} nor {@link TextStyle#SHORT short} 1012 */ 1013 public DateTimeFormatterBuilder appendLocalizedOffset(TextStyle style) { 1014 Objects.requireNonNull(style, "style"); 1015 if (style != TextStyle.FULL && style != TextStyle.SHORT) { 1016 throw new IllegalArgumentException("Style must be either full or short"); 1017 } 1018 appendInternal(new LocalizedOffsetIdPrinterParser(style)); 1019 return this; 1020 } 1021 1022 //----------------------------------------------------------------------- 1023 /** 1024 * Appends the time-zone ID, such as 'Europe/Paris' or '+02:00', to the formatter. 1025 * <p> 1026 * This appends an instruction to format/parse the zone ID to the builder. 1027 * The zone ID is obtained in a strict manner suitable for {@code ZonedDateTime}. 1028 * By contrast, {@code OffsetDateTime} does not have a zone ID suitable 1029 * for use with this method, see {@link #appendZoneOrOffsetId()}. 1030 * <p> 1031 * During formatting, the zone is obtained using a mechanism equivalent 1032 * to querying the temporal with {@link TemporalQueries#zoneId()}. 1033 * It will be printed using the result of {@link ZoneId#getId()}. 1034 * If the zone cannot be obtained then an exception is thrown unless the 1035 * section of the formatter is optional. 1036 * <p> 1037 * During parsing, the text must match a known zone or offset. 1038 * There are two types of zone ID, offset-based, such as '+01:30' and 1039 * region-based, such as 'Europe/London'. These are parsed differently. 1040 * If the parse starts with '+', '-', 'UT', 'UTC' or 'GMT', then the parser 1041 * expects an offset-based zone and will not match region-based zones. 1042 * The offset ID, such as '+02:30', may be at the start of the parse, 1043 * or prefixed by 'UT', 'UTC' or 'GMT'. The offset ID parsing is 1044 * equivalent to using {@link #appendOffset(String, String)} using the 1045 * arguments 'HH:MM:ss' and the no offset string '0'. 1046 * If the parse starts with 'UT', 'UTC' or 'GMT', and the parser cannot 1047 * match a following offset ID, then {@link ZoneOffset#UTC} is selected. 1048 * In all other cases, the list of known region-based zones is used to 1049 * find the longest available match. If no match is found, and the parse 1050 * starts with 'Z', then {@code ZoneOffset.UTC} is selected. 1051 * The parser uses the {@linkplain #parseCaseInsensitive() case sensitive} setting. 1052 * <p> 1053 * For example, the following will parse: 1054 * <pre> 1055 * "Europe/London" -- ZoneId.of("Europe/London") 1056 * "Z" -- ZoneOffset.UTC 1057 * "UT" -- ZoneId.of("UT") 1058 * "UTC" -- ZoneId.of("UTC") 1059 * "GMT" -- ZoneId.of("GMT") 1060 * "+01:30" -- ZoneOffset.of("+01:30") 1061 * "UT+01:30" -- ZoneOffset.of("+01:30") 1062 * "UTC+01:30" -- ZoneOffset.of("+01:30") 1063 * "GMT+01:30" -- ZoneOffset.of("+01:30") 1064 * </pre> 1065 * 1066 * @return this, for chaining, not null 1067 * @see #appendZoneRegionId() 1068 */ 1069 public DateTimeFormatterBuilder appendZoneId() { 1070 appendInternal(new ZoneIdPrinterParser(TemporalQueries.zoneId(), "ZoneId()")); 1071 return this; 1072 } 1073 1074 /** 1075 * Appends the time-zone region ID, such as 'Europe/Paris', to the formatter, 1076 * rejecting the zone ID if it is a {@code ZoneOffset}. 1077 * <p> 1078 * This appends an instruction to format/parse the zone ID to the builder 1079 * only if it is a region-based ID. 1080 * <p> 1081 * During formatting, the zone is obtained using a mechanism equivalent 1082 * to querying the temporal with {@link TemporalQueries#zoneId()}. 1083 * If the zone is a {@code ZoneOffset} or it cannot be obtained then 1084 * an exception is thrown unless the section of the formatter is optional. 1085 * If the zone is not an offset, then the zone will be printed using 1086 * the zone ID from {@link ZoneId#getId()}. 1087 * <p> 1088 * During parsing, the text must match a known zone or offset. 1089 * There are two types of zone ID, offset-based, such as '+01:30' and 1090 * region-based, such as 'Europe/London'. These are parsed differently. 1091 * If the parse starts with '+', '-', 'UT', 'UTC' or 'GMT', then the parser 1092 * expects an offset-based zone and will not match region-based zones. 1093 * The offset ID, such as '+02:30', may be at the start of the parse, 1094 * or prefixed by 'UT', 'UTC' or 'GMT'. The offset ID parsing is 1095 * equivalent to using {@link #appendOffset(String, String)} using the 1096 * arguments 'HH:MM:ss' and the no offset string '0'. 1097 * If the parse starts with 'UT', 'UTC' or 'GMT', and the parser cannot 1098 * match a following offset ID, then {@link ZoneOffset#UTC} is selected. 1099 * In all other cases, the list of known region-based zones is used to 1100 * find the longest available match. If no match is found, and the parse 1101 * starts with 'Z', then {@code ZoneOffset.UTC} is selected. 1102 * The parser uses the {@linkplain #parseCaseInsensitive() case sensitive} setting. 1103 * <p> 1104 * For example, the following will parse: 1105 * <pre> 1106 * "Europe/London" -- ZoneId.of("Europe/London") 1107 * "Z" -- ZoneOffset.UTC 1108 * "UT" -- ZoneId.of("UT") 1109 * "UTC" -- ZoneId.of("UTC") 1110 * "GMT" -- ZoneId.of("GMT") 1111 * "+01:30" -- ZoneOffset.of("+01:30") 1112 * "UT+01:30" -- ZoneOffset.of("+01:30") 1113 * "UTC+01:30" -- ZoneOffset.of("+01:30") 1114 * "GMT+01:30" -- ZoneOffset.of("+01:30") 1115 * </pre> 1116 * <p> 1117 * Note that this method is identical to {@code appendZoneId()} except 1118 * in the mechanism used to obtain the zone. 1119 * Note also that parsing accepts offsets, whereas formatting will never 1120 * produce one. 1121 * 1122 * @return this, for chaining, not null 1123 * @see #appendZoneId() 1124 */ 1125 public DateTimeFormatterBuilder appendZoneRegionId() { 1126 appendInternal(new ZoneIdPrinterParser(QUERY_REGION_ONLY, "ZoneRegionId()")); 1127 return this; 1128 } 1129 1130 /** 1131 * Appends the time-zone ID, such as 'Europe/Paris' or '+02:00', to 1132 * the formatter, using the best available zone ID. 1133 * <p> 1134 * This appends an instruction to format/parse the best available 1135 * zone or offset ID to the builder. 1136 * The zone ID is obtained in a lenient manner that first attempts to 1137 * find a true zone ID, such as that on {@code ZonedDateTime}, and 1138 * then attempts to find an offset, such as that on {@code OffsetDateTime}. 1139 * <p> 1140 * During formatting, the zone is obtained using a mechanism equivalent 1141 * to querying the temporal with {@link TemporalQueries#zone()}. 1142 * It will be printed using the result of {@link ZoneId#getId()}. 1143 * If the zone cannot be obtained then an exception is thrown unless the 1144 * section of the formatter is optional. 1145 * <p> 1146 * During parsing, the text must match a known zone or offset. 1147 * There are two types of zone ID, offset-based, such as '+01:30' and 1148 * region-based, such as 'Europe/London'. These are parsed differently. 1149 * If the parse starts with '+', '-', 'UT', 'UTC' or 'GMT', then the parser 1150 * expects an offset-based zone and will not match region-based zones. 1151 * The offset ID, such as '+02:30', may be at the start of the parse, 1152 * or prefixed by 'UT', 'UTC' or 'GMT'. The offset ID parsing is 1153 * equivalent to using {@link #appendOffset(String, String)} using the 1154 * arguments 'HH:MM:ss' and the no offset string '0'. 1155 * If the parse starts with 'UT', 'UTC' or 'GMT', and the parser cannot 1156 * match a following offset ID, then {@link ZoneOffset#UTC} is selected. 1157 * In all other cases, the list of known region-based zones is used to 1158 * find the longest available match. If no match is found, and the parse 1159 * starts with 'Z', then {@code ZoneOffset.UTC} is selected. 1160 * The parser uses the {@linkplain #parseCaseInsensitive() case sensitive} setting. 1161 * <p> 1162 * For example, the following will parse: 1163 * <pre> 1164 * "Europe/London" -- ZoneId.of("Europe/London") 1165 * "Z" -- ZoneOffset.UTC 1166 * "UT" -- ZoneId.of("UT") 1167 * "UTC" -- ZoneId.of("UTC") 1168 * "GMT" -- ZoneId.of("GMT") 1169 * "+01:30" -- ZoneOffset.of("+01:30") 1170 * "UT+01:30" -- ZoneOffset.of("UT+01:30") 1171 * "UTC+01:30" -- ZoneOffset.of("UTC+01:30") 1172 * "GMT+01:30" -- ZoneOffset.of("GMT+01:30") 1173 * </pre> 1174 * <p> 1175 * Note that this method is identical to {@code appendZoneId()} except 1176 * in the mechanism used to obtain the zone. 1177 * 1178 * @return this, for chaining, not null 1179 * @see #appendZoneId() 1180 */ 1181 public DateTimeFormatterBuilder appendZoneOrOffsetId() { 1182 appendInternal(new ZoneIdPrinterParser(TemporalQueries.zone(), "ZoneOrOffsetId()")); 1183 return this; 1184 } 1185 1186 /** 1187 * Appends the time-zone name, such as 'British Summer Time', to the formatter. 1188 * <p> 1189 * This appends an instruction to format/parse the textual name of the zone to 1190 * the builder. 1191 * <p> 1192 * During formatting, the zone is obtained using a mechanism equivalent 1193 * to querying the temporal with {@link TemporalQueries#zoneId()}. 1194 * If the zone is a {@code ZoneOffset} it will be printed using the 1195 * result of {@link ZoneOffset#getId()}. 1196 * If the zone is not an offset, the textual name will be looked up 1197 * for the locale set in the {@link DateTimeFormatter}. 1198 * If the temporal object being printed represents an instant, or if it is a 1199 * local date-time that is not in a daylight saving gap or overlap then 1200 * the text will be the summer or winter time text as appropriate. 1201 * If the lookup for text does not find any suitable result, then the 1202 * {@link ZoneId#getId() ID} will be printed. 1203 * If the zone cannot be obtained then an exception is thrown unless the 1204 * section of the formatter is optional. 1205 * <p> 1206 * During parsing, either the textual zone name, the zone ID or the offset 1207 * is accepted. Many textual zone names are not unique, such as CST can be 1208 * for both "Central Standard Time" and "China Standard Time". In this 1209 * situation, the zone id will be determined by the region information from 1210 * formatter's {@link DateTimeFormatter#getLocale() locale} and the standard 1211 * zone id for that area, for example, America/New_York for the America Eastern 1212 * zone. The {@link #appendZoneText(TextStyle, Set)} may be used 1213 * to specify a set of preferred {@link ZoneId} in this situation. 1214 * 1215 * @param textStyle the text style to use, not null 1216 * @return this, for chaining, not null 1217 */ 1218 public DateTimeFormatterBuilder appendZoneText(TextStyle textStyle) { 1219 appendInternal(new ZoneTextPrinterParser(textStyle, null, false)); 1220 return this; 1221 } 1222 1223 /** 1224 * Appends the time-zone name, such as 'British Summer Time', to the formatter. 1225 * <p> 1226 * This appends an instruction to format/parse the textual name of the zone to 1227 * the builder. 1228 * <p> 1229 * During formatting, the zone is obtained using a mechanism equivalent 1230 * to querying the temporal with {@link TemporalQueries#zoneId()}. 1231 * If the zone is a {@code ZoneOffset} it will be printed using the 1232 * result of {@link ZoneOffset#getId()}. 1233 * If the zone is not an offset, the textual name will be looked up 1234 * for the locale set in the {@link DateTimeFormatter}. 1235 * If the temporal object being printed represents an instant, or if it is a 1236 * local date-time that is not in a daylight saving gap or overlap, then the text 1237 * will be the summer or winter time text as appropriate. 1238 * If the lookup for text does not find any suitable result, then the 1239 * {@link ZoneId#getId() ID} will be printed. 1240 * If the zone cannot be obtained then an exception is thrown unless the 1241 * section of the formatter is optional. 1242 * <p> 1243 * During parsing, either the textual zone name, the zone ID or the offset 1244 * is accepted. Many textual zone names are not unique, such as CST can be 1245 * for both "Central Standard Time" and "China Standard Time". In this 1246 * situation, the zone id will be determined by the region information from 1247 * formatter's {@link DateTimeFormatter#getLocale() locale} and the standard 1248 * zone id for that area, for example, America/New_York for the America Eastern 1249 * zone. This method also allows a set of preferred {@link ZoneId} to be 1250 * specified for parsing. The matched preferred zone id will be used if the 1251 * textural zone name being parsed is not unique. 1252 * <p> 1253 * If the zone cannot be parsed then an exception is thrown unless the 1254 * section of the formatter is optional. 1255 * 1256 * @param textStyle the text style to use, not null 1257 * @param preferredZones the set of preferred zone ids, not null 1258 * @return this, for chaining, not null 1259 */ 1260 public DateTimeFormatterBuilder appendZoneText(TextStyle textStyle, 1261 Set<ZoneId> preferredZones) { 1262 Objects.requireNonNull(preferredZones, "preferredZones"); 1263 appendInternal(new ZoneTextPrinterParser(textStyle, preferredZones, false)); 1264 return this; 1265 } 1266 //---------------------------------------------------------------------- 1267 /** 1268 * Appends the generic time-zone name, such as 'Pacific Time', to the formatter. 1269 * <p> 1270 * This appends an instruction to format/parse the generic textual 1271 * name of the zone to the builder. The generic name is the same throughout the whole 1272 * year, ignoring any daylight saving changes. For example, 'Pacific Time' is the 1273 * generic name, whereas 'Pacific Standard Time' and 'Pacific Daylight Time' are the 1274 * specific names, see {@link #appendZoneText(TextStyle)}. 1275 * <p> 1276 * During formatting, the zone is obtained using a mechanism equivalent 1277 * to querying the temporal with {@link TemporalQueries#zoneId()}. 1278 * If the zone is a {@code ZoneOffset} it will be printed using the 1279 * result of {@link ZoneOffset#getId()}. 1280 * If the zone is not an offset, the textual name will be looked up 1281 * for the locale set in the {@link DateTimeFormatter}. 1282 * If the lookup for text does not find any suitable result, then the 1283 * {@link ZoneId#getId() ID} will be printed. 1284 * If the zone cannot be obtained then an exception is thrown unless the 1285 * section of the formatter is optional. 1286 * <p> 1287 * During parsing, either the textual zone name, the zone ID or the offset 1288 * is accepted. Many textual zone names are not unique, such as CST can be 1289 * for both "Central Standard Time" and "China Standard Time". In this 1290 * situation, the zone id will be determined by the region information from 1291 * formatter's {@link DateTimeFormatter#getLocale() locale} and the standard 1292 * zone id for that area, for example, America/New_York for the America Eastern zone. 1293 * The {@link #appendGenericZoneText(TextStyle, Set)} may be used 1294 * to specify a set of preferred {@link ZoneId} in this situation. 1295 * 1296 * @param textStyle the text style to use, not null 1297 * @return this, for chaining, not null 1298 * @since 9 1299 */ 1300 public DateTimeFormatterBuilder appendGenericZoneText(TextStyle textStyle) { 1301 appendInternal(new ZoneTextPrinterParser(textStyle, null, true)); 1302 return this; 1303 } 1304 1305 /** 1306 * Appends the generic time-zone name, such as 'Pacific Time', to the formatter. 1307 * <p> 1308 * This appends an instruction to format/parse the generic textual 1309 * name of the zone to the builder. The generic name is the same throughout the whole 1310 * year, ignoring any daylight saving changes. For example, 'Pacific Time' is the 1311 * generic name, whereas 'Pacific Standard Time' and 'Pacific Daylight Time' are the 1312 * specific names, see {@link #appendZoneText(TextStyle)}. 1313 * <p> 1314 * This method also allows a set of preferred {@link ZoneId} to be 1315 * specified for parsing. The matched preferred zone id will be used if the 1316 * textural zone name being parsed is not unique. 1317 * <p> 1318 * See {@link #appendGenericZoneText(TextStyle)} for details about 1319 * formatting and parsing. 1320 * 1321 * @param textStyle the text style to use, not null 1322 * @param preferredZones the set of preferred zone ids, not null 1323 * @return this, for chaining, not null 1324 * @since 9 1325 */ 1326 public DateTimeFormatterBuilder appendGenericZoneText(TextStyle textStyle, 1327 Set<ZoneId> preferredZones) { 1328 appendInternal(new ZoneTextPrinterParser(textStyle, preferredZones, true)); 1329 return this; 1330 } 1331 1332 //----------------------------------------------------------------------- 1333 /** 1334 * Appends the chronology ID, such as 'ISO' or 'ThaiBuddhist', to the formatter. 1335 * <p> 1336 * This appends an instruction to format/parse the chronology ID to the builder. 1337 * <p> 1338 * During formatting, the chronology is obtained using a mechanism equivalent 1339 * to querying the temporal with {@link TemporalQueries#chronology()}. 1340 * It will be printed using the result of {@link Chronology#getId()}. 1341 * If the chronology cannot be obtained then an exception is thrown unless the 1342 * section of the formatter is optional. 1343 * <p> 1344 * During parsing, the chronology is parsed and must match one of the chronologies 1345 * in {@link Chronology#getAvailableChronologies()}. 1346 * If the chronology cannot be parsed then an exception is thrown unless the 1347 * section of the formatter is optional. 1348 * The parser uses the {@linkplain #parseCaseInsensitive() case sensitive} setting. 1349 * 1350 * @return this, for chaining, not null 1351 */ 1352 public DateTimeFormatterBuilder appendChronologyId() { 1353 appendInternal(new ChronoPrinterParser(null)); 1354 return this; 1355 } 1356 1357 /** 1358 * Appends the chronology name to the formatter. 1359 * <p> 1360 * The calendar system name will be output during a format. 1361 * If the chronology cannot be obtained then an exception will be thrown. 1362 * 1363 * @param textStyle the text style to use, not null 1364 * @return this, for chaining, not null 1365 */ 1366 public DateTimeFormatterBuilder appendChronologyText(TextStyle textStyle) { 1367 Objects.requireNonNull(textStyle, "textStyle"); 1368 appendInternal(new ChronoPrinterParser(textStyle)); 1369 return this; 1370 } 1371 1372 //----------------------------------------------------------------------- 1373 /** 1374 * Appends a localized date-time pattern to the formatter. 1375 * <p> 1376 * This appends a localized section to the builder, suitable for outputting 1377 * a date, time or date-time combination. The format of the localized 1378 * section is lazily looked up based on four items: 1379 * <ul> 1380 * <li>the {@code dateStyle} specified to this method 1381 * <li>the {@code timeStyle} specified to this method 1382 * <li>the {@code Locale} of the {@code DateTimeFormatter} 1383 * <li>the {@code Chronology}, selecting the best available 1384 * </ul> 1385 * During formatting, the chronology is obtained from the temporal object 1386 * being formatted, which may have been overridden by 1387 * {@link DateTimeFormatter#withChronology(Chronology)}. 1388 * The {@code FULL} and {@code LONG} styles typically require a time-zone. 1389 * When formatting using these styles, a {@code ZoneId} must be available, 1390 * either by using {@code ZonedDateTime} or {@link DateTimeFormatter#withZone}. 1391 * <p> 1392 * During parsing, if a chronology has already been parsed, then it is used. 1393 * Otherwise the default from {@code DateTimeFormatter.withChronology(Chronology)} 1394 * is used, with {@code IsoChronology} as the fallback. 1395 * <p> 1396 * Note that this method provides similar functionality to methods on 1397 * {@code DateFormat} such as {@link java.text.DateFormat#getDateTimeInstance(int, int)}. 1398 * 1399 * @param dateStyle the date style to use, null means no date required 1400 * @param timeStyle the time style to use, null means no time required 1401 * @return this, for chaining, not null 1402 * @throws IllegalArgumentException if both the date and time styles are null 1403 */ 1404 public DateTimeFormatterBuilder appendLocalized(FormatStyle dateStyle, FormatStyle timeStyle) { 1405 if (dateStyle == null && timeStyle == null) { 1406 throw new IllegalArgumentException("Either the date or time style must be non-null"); 1407 } 1408 appendInternal(new LocalizedPrinterParser(dateStyle, timeStyle)); 1409 return this; 1410 } 1411 1412 //----------------------------------------------------------------------- 1413 /** 1414 * Appends a character literal to the formatter. 1415 * <p> 1416 * This character will be output during a format. 1417 * 1418 * @param literal the literal to append, not null 1419 * @return this, for chaining, not null 1420 */ 1421 public DateTimeFormatterBuilder appendLiteral(char literal) { 1422 appendInternal(new CharLiteralPrinterParser(literal)); 1423 return this; 1424 } 1425 1426 /** 1427 * Appends a string literal to the formatter. 1428 * <p> 1429 * This string will be output during a format. 1430 * <p> 1431 * If the literal is empty, nothing is added to the formatter. 1432 * 1433 * @param literal the literal to append, not null 1434 * @return this, for chaining, not null 1435 */ 1436 public DateTimeFormatterBuilder appendLiteral(String literal) { 1437 Objects.requireNonNull(literal, "literal"); 1438 if (!literal.isEmpty()) { 1439 if (literal.length() == 1) { 1440 appendInternal(new CharLiteralPrinterParser(literal.charAt(0))); 1441 } else { 1442 appendInternal(new StringLiteralPrinterParser(literal)); 1443 } 1444 } 1445 return this; 1446 } 1447 1448 //----------------------------------------------------------------------- 1449 /** 1450 * Appends all the elements of a formatter to the builder. 1451 * <p> 1452 * This method has the same effect as appending each of the constituent 1453 * parts of the formatter directly to this builder. 1454 * 1455 * @param formatter the formatter to add, not null 1456 * @return this, for chaining, not null 1457 */ 1458 public DateTimeFormatterBuilder append(DateTimeFormatter formatter) { 1459 Objects.requireNonNull(formatter, "formatter"); 1460 appendInternal(formatter.toPrinterParser(false)); 1461 return this; 1462 } 1463 1464 /** 1465 * Appends a formatter to the builder which will optionally format/parse. 1466 * <p> 1467 * This method has the same effect as appending each of the constituent 1468 * parts directly to this builder surrounded by an {@link #optionalStart()} and 1469 * {@link #optionalEnd()}. 1470 * <p> 1471 * The formatter will format if data is available for all the fields contained within it. 1472 * The formatter will parse if the string matches, otherwise no error is returned. 1473 * 1474 * @param formatter the formatter to add, not null 1475 * @return this, for chaining, not null 1476 */ 1477 public DateTimeFormatterBuilder appendOptional(DateTimeFormatter formatter) { 1478 Objects.requireNonNull(formatter, "formatter"); 1479 appendInternal(formatter.toPrinterParser(true)); 1480 return this; 1481 } 1482 1483 //----------------------------------------------------------------------- 1484 /** 1485 * Appends the elements defined by the specified pattern to the builder. 1486 * <p> 1487 * All letters 'A' to 'Z' and 'a' to 'z' are reserved as pattern letters. 1488 * The characters '#', '{' and '}' are reserved for future use. 1489 * The characters '[' and ']' indicate optional patterns. 1490 * The following pattern letters are defined: 1491 * <pre> 1492 * Symbol Meaning Presentation Examples 1493 * ------ ------- ------------ ------- 1494 * G era text AD; Anno Domini; A 1495 * u year year 2004; 04 1496 * y year-of-era year 2004; 04 1497 * D day-of-year number 189 1498 * M/L month-of-year number/text 7; 07; Jul; July; J 1499 * d day-of-month number 10 1500 * g modified-julian-day number 2451334 1501 * 1502 * Q/q quarter-of-year number/text 3; 03; Q3; 3rd quarter 1503 * Y week-based-year year 1996; 96 1504 * w week-of-week-based-year number 27 1505 * W week-of-month number 4 1506 * E day-of-week text Tue; Tuesday; T 1507 * e/c localized day-of-week number/text 2; 02; Tue; Tuesday; T 1508 * F day-of-week-in-month number 3 1509 * 1510 * a am-pm-of-day text PM 1511 * h clock-hour-of-am-pm (1-12) number 12 1512 * K hour-of-am-pm (0-11) number 0 1513 * k clock-hour-of-day (1-24) number 24 1514 * 1515 * H hour-of-day (0-23) number 0 1516 * m minute-of-hour number 30 1517 * s second-of-minute number 55 1518 * S fraction-of-second fraction 978 1519 * A milli-of-day number 1234 1520 * n nano-of-second number 987654321 1521 * N nano-of-day number 1234000000 1522 * 1523 * V time-zone ID zone-id America/Los_Angeles; Z; -08:30 1524 * v generic time-zone name zone-name PT, Pacific Time 1525 * z time-zone name zone-name Pacific Standard Time; PST 1526 * O localized zone-offset offset-O GMT+8; GMT+08:00; UTC-08:00; 1527 * X zone-offset 'Z' for zero offset-X Z; -08; -0830; -08:30; -083015; -08:30:15 1528 * x zone-offset offset-x +0000; -08; -0830; -08:30; -083015; -08:30:15 1529 * Z zone-offset offset-Z +0000; -0800; -08:00 1530 * 1531 * p pad next pad modifier 1 1532 * 1533 * ' escape for text delimiter 1534 * '' single quote literal ' 1535 * [ optional section start 1536 * ] optional section end 1537 * # reserved for future use 1538 * { reserved for future use 1539 * } reserved for future use 1540 * </pre> 1541 * <p> 1542 * The count of pattern letters determine the format. 1543 * See <a href="DateTimeFormatter.html#patterns">DateTimeFormatter</a> for a user-focused description of the patterns. 1544 * The following tables define how the pattern letters map to the builder. 1545 * <p> 1546 * <b>Date fields</b>: Pattern letters to output a date. 1547 * <pre> 1548 * Pattern Count Equivalent builder methods 1549 * ------- ----- -------------------------- 1550 * G 1 appendText(ChronoField.ERA, TextStyle.SHORT) 1551 * GG 2 appendText(ChronoField.ERA, TextStyle.SHORT) 1552 * GGG 3 appendText(ChronoField.ERA, TextStyle.SHORT) 1553 * GGGG 4 appendText(ChronoField.ERA, TextStyle.FULL) 1554 * GGGGG 5 appendText(ChronoField.ERA, TextStyle.NARROW) 1555 * 1556 * u 1 appendValue(ChronoField.YEAR, 1, 19, SignStyle.NORMAL) 1557 * uu 2 appendValueReduced(ChronoField.YEAR, 2, 2000) 1558 * uuu 3 appendValue(ChronoField.YEAR, 3, 19, SignStyle.NORMAL) 1559 * u..u 4..n appendValue(ChronoField.YEAR, n, 19, SignStyle.EXCEEDS_PAD) 1560 * y 1 appendValue(ChronoField.YEAR_OF_ERA, 1, 19, SignStyle.NORMAL) 1561 * yy 2 appendValueReduced(ChronoField.YEAR_OF_ERA, 2, 2000) 1562 * yyy 3 appendValue(ChronoField.YEAR_OF_ERA, 3, 19, SignStyle.NORMAL) 1563 * y..y 4..n appendValue(ChronoField.YEAR_OF_ERA, n, 19, SignStyle.EXCEEDS_PAD) 1564 * Y 1 append special localized WeekFields element for numeric week-based-year 1565 * YY 2 append special localized WeekFields element for reduced numeric week-based-year 2 digits 1566 * YYY 3 append special localized WeekFields element for numeric week-based-year (3, 19, SignStyle.NORMAL) 1567 * Y..Y 4..n append special localized WeekFields element for numeric week-based-year (n, 19, SignStyle.EXCEEDS_PAD) 1568 * 1569 * Q 1 appendValue(IsoFields.QUARTER_OF_YEAR) 1570 * QQ 2 appendValue(IsoFields.QUARTER_OF_YEAR, 2) 1571 * QQQ 3 appendText(IsoFields.QUARTER_OF_YEAR, TextStyle.SHORT) 1572 * QQQQ 4 appendText(IsoFields.QUARTER_OF_YEAR, TextStyle.FULL) 1573 * QQQQQ 5 appendText(IsoFields.QUARTER_OF_YEAR, TextStyle.NARROW) 1574 * q 1 appendValue(IsoFields.QUARTER_OF_YEAR) 1575 * qq 2 appendValue(IsoFields.QUARTER_OF_YEAR, 2) 1576 * qqq 3 appendText(IsoFields.QUARTER_OF_YEAR, TextStyle.SHORT_STANDALONE) 1577 * qqqq 4 appendText(IsoFields.QUARTER_OF_YEAR, TextStyle.FULL_STANDALONE) 1578 * qqqqq 5 appendText(IsoFields.QUARTER_OF_YEAR, TextStyle.NARROW_STANDALONE) 1579 * 1580 * M 1 appendValue(ChronoField.MONTH_OF_YEAR) 1581 * MM 2 appendValue(ChronoField.MONTH_OF_YEAR, 2) 1582 * MMM 3 appendText(ChronoField.MONTH_OF_YEAR, TextStyle.SHORT) 1583 * MMMM 4 appendText(ChronoField.MONTH_OF_YEAR, TextStyle.FULL) 1584 * MMMMM 5 appendText(ChronoField.MONTH_OF_YEAR, TextStyle.NARROW) 1585 * L 1 appendValue(ChronoField.MONTH_OF_YEAR) 1586 * LL 2 appendValue(ChronoField.MONTH_OF_YEAR, 2) 1587 * LLL 3 appendText(ChronoField.MONTH_OF_YEAR, TextStyle.SHORT_STANDALONE) 1588 * LLLL 4 appendText(ChronoField.MONTH_OF_YEAR, TextStyle.FULL_STANDALONE) 1589 * LLLLL 5 appendText(ChronoField.MONTH_OF_YEAR, TextStyle.NARROW_STANDALONE) 1590 * 1591 * w 1 append special localized WeekFields element for numeric week-of-year 1592 * ww 2 append special localized WeekFields element for numeric week-of-year, zero-padded 1593 * W 1 append special localized WeekFields element for numeric week-of-month 1594 * d 1 appendValue(ChronoField.DAY_OF_MONTH) 1595 * dd 2 appendValue(ChronoField.DAY_OF_MONTH, 2) 1596 * D 1 appendValue(ChronoField.DAY_OF_YEAR) 1597 * DD 2 appendValue(ChronoField.DAY_OF_YEAR, 2, 3, SignStyle.NOT_NEGATIVE) 1598 * DDD 3 appendValue(ChronoField.DAY_OF_YEAR, 3) 1599 * F 1 appendValue(ChronoField.ALIGNED_DAY_OF_WEEK_IN_MONTH) 1600 * g..g 1..n appendValue(JulianFields.MODIFIED_JULIAN_DAY, n, 19, SignStyle.NORMAL) 1601 * E 1 appendText(ChronoField.DAY_OF_WEEK, TextStyle.SHORT) 1602 * EE 2 appendText(ChronoField.DAY_OF_WEEK, TextStyle.SHORT) 1603 * EEE 3 appendText(ChronoField.DAY_OF_WEEK, TextStyle.SHORT) 1604 * EEEE 4 appendText(ChronoField.DAY_OF_WEEK, TextStyle.FULL) 1605 * EEEEE 5 appendText(ChronoField.DAY_OF_WEEK, TextStyle.NARROW) 1606 * e 1 append special localized WeekFields element for numeric day-of-week 1607 * ee 2 append special localized WeekFields element for numeric day-of-week, zero-padded 1608 * eee 3 appendText(ChronoField.DAY_OF_WEEK, TextStyle.SHORT) 1609 * eeee 4 appendText(ChronoField.DAY_OF_WEEK, TextStyle.FULL) 1610 * eeeee 5 appendText(ChronoField.DAY_OF_WEEK, TextStyle.NARROW) 1611 * c 1 append special localized WeekFields element for numeric day-of-week 1612 * ccc 3 appendText(ChronoField.DAY_OF_WEEK, TextStyle.SHORT_STANDALONE) 1613 * cccc 4 appendText(ChronoField.DAY_OF_WEEK, TextStyle.FULL_STANDALONE) 1614 * ccccc 5 appendText(ChronoField.DAY_OF_WEEK, TextStyle.NARROW_STANDALONE) 1615 * </pre> 1616 * <p> 1617 * <b>Time fields</b>: Pattern letters to output a time. 1618 * <pre> 1619 * Pattern Count Equivalent builder methods 1620 * ------- ----- -------------------------- 1621 * a 1 appendText(ChronoField.AMPM_OF_DAY, TextStyle.SHORT) 1622 * h 1 appendValue(ChronoField.CLOCK_HOUR_OF_AMPM) 1623 * hh 2 appendValue(ChronoField.CLOCK_HOUR_OF_AMPM, 2) 1624 * H 1 appendValue(ChronoField.HOUR_OF_DAY) 1625 * HH 2 appendValue(ChronoField.HOUR_OF_DAY, 2) 1626 * k 1 appendValue(ChronoField.CLOCK_HOUR_OF_DAY) 1627 * kk 2 appendValue(ChronoField.CLOCK_HOUR_OF_DAY, 2) 1628 * K 1 appendValue(ChronoField.HOUR_OF_AMPM) 1629 * KK 2 appendValue(ChronoField.HOUR_OF_AMPM, 2) 1630 * m 1 appendValue(ChronoField.MINUTE_OF_HOUR) 1631 * mm 2 appendValue(ChronoField.MINUTE_OF_HOUR, 2) 1632 * s 1 appendValue(ChronoField.SECOND_OF_MINUTE) 1633 * ss 2 appendValue(ChronoField.SECOND_OF_MINUTE, 2) 1634 * 1635 * S..S 1..n appendFraction(ChronoField.NANO_OF_SECOND, n, n, false) 1636 * A..A 1..n appendValue(ChronoField.MILLI_OF_DAY, n, 19, SignStyle.NOT_NEGATIVE) 1637 * n..n 1..n appendValue(ChronoField.NANO_OF_SECOND, n, 19, SignStyle.NOT_NEGATIVE) 1638 * N..N 1..n appendValue(ChronoField.NANO_OF_DAY, n, 19, SignStyle.NOT_NEGATIVE) 1639 * </pre> 1640 * <p> 1641 * <b>Zone ID</b>: Pattern letters to output {@code ZoneId}. 1642 * <pre> 1643 * Pattern Count Equivalent builder methods 1644 * ------- ----- -------------------------- 1645 * VV 2 appendZoneId() 1646 * v 1 appendGenericZoneText(TextStyle.SHORT) 1647 * vvvv 4 appendGenericZoneText(TextStyle.FULL) 1648 * z 1 appendZoneText(TextStyle.SHORT) 1649 * zz 2 appendZoneText(TextStyle.SHORT) 1650 * zzz 3 appendZoneText(TextStyle.SHORT) 1651 * zzzz 4 appendZoneText(TextStyle.FULL) 1652 * </pre> 1653 * <p> 1654 * <b>Zone offset</b>: Pattern letters to output {@code ZoneOffset}. 1655 * <pre> 1656 * Pattern Count Equivalent builder methods 1657 * ------- ----- -------------------------- 1658 * O 1 appendLocalizedOffset(TextStyle.SHORT) 1659 * OOOO 4 appendLocalizedOffset(TextStyle.FULL) 1660 * X 1 appendOffset("+HHmm","Z") 1661 * XX 2 appendOffset("+HHMM","Z") 1662 * XXX 3 appendOffset("+HH:MM","Z") 1663 * XXXX 4 appendOffset("+HHMMss","Z") 1664 * XXXXX 5 appendOffset("+HH:MM:ss","Z") 1665 * x 1 appendOffset("+HHmm","+00") 1666 * xx 2 appendOffset("+HHMM","+0000") 1667 * xxx 3 appendOffset("+HH:MM","+00:00") 1668 * xxxx 4 appendOffset("+HHMMss","+0000") 1669 * xxxxx 5 appendOffset("+HH:MM:ss","+00:00") 1670 * Z 1 appendOffset("+HHMM","+0000") 1671 * ZZ 2 appendOffset("+HHMM","+0000") 1672 * ZZZ 3 appendOffset("+HHMM","+0000") 1673 * ZZZZ 4 appendLocalizedOffset(TextStyle.FULL) 1674 * ZZZZZ 5 appendOffset("+HH:MM:ss","Z") 1675 * </pre> 1676 * <p> 1677 * <b>Modifiers</b>: Pattern letters that modify the rest of the pattern: 1678 * <pre> 1679 * Pattern Count Equivalent builder methods 1680 * ------- ----- -------------------------- 1681 * [ 1 optionalStart() 1682 * ] 1 optionalEnd() 1683 * p..p 1..n padNext(n) 1684 * </pre> 1685 * <p> 1686 * Any sequence of letters not specified above, unrecognized letter or 1687 * reserved character will throw an exception. 1688 * Future versions may add to the set of patterns. 1689 * It is recommended to use single quotes around all characters that you want 1690 * to output directly to ensure that future changes do not break your application. 1691 * <p> 1692 * Note that the pattern string is similar, but not identical, to 1693 * {@link java.text.SimpleDateFormat SimpleDateFormat}. 1694 * The pattern string is also similar, but not identical, to that defined by the 1695 * Unicode Common Locale Data Repository (CLDR/LDML). 1696 * Pattern letters 'X' and 'u' are aligned with Unicode CLDR/LDML. 1697 * By contrast, {@code SimpleDateFormat} uses 'u' for the numeric day of week. 1698 * Pattern letters 'y' and 'Y' parse years of two digits and more than 4 digits differently. 1699 * Pattern letters 'n', 'A', 'N', and 'p' are added. 1700 * Number types will reject large numbers. 1701 * 1702 * @param pattern the pattern to add, not null 1703 * @return this, for chaining, not null 1704 * @throws IllegalArgumentException if the pattern is invalid 1705 */ 1706 public DateTimeFormatterBuilder appendPattern(String pattern) { 1707 Objects.requireNonNull(pattern, "pattern"); 1708 parsePattern(pattern); 1709 return this; 1710 } 1711 1712 private void parsePattern(String pattern) { 1713 for (int pos = 0; pos < pattern.length(); pos++) { 1714 char cur = pattern.charAt(pos); 1715 if ((cur >= 'A' && cur <= 'Z') || (cur >= 'a' && cur <= 'z')) { 1716 int start = pos++; 1717 for ( ; pos < pattern.length() && pattern.charAt(pos) == cur; pos++); // short loop 1718 int count = pos - start; 1719 // padding 1720 if (cur == 'p') { 1721 int pad = 0; 1722 if (pos < pattern.length()) { 1723 cur = pattern.charAt(pos); 1724 if ((cur >= 'A' && cur <= 'Z') || (cur >= 'a' && cur <= 'z')) { 1725 pad = count; 1726 start = pos++; 1727 for ( ; pos < pattern.length() && pattern.charAt(pos) == cur; pos++); // short loop 1728 count = pos - start; 1729 } 1730 } 1731 if (pad == 0) { 1732 throw new IllegalArgumentException( 1733 "Pad letter 'p' must be followed by valid pad pattern: " + pattern); 1734 } 1735 padNext(pad); // pad and continue parsing 1736 } 1737 // main rules 1738 TemporalField field = FIELD_MAP.get(cur); 1739 if (field != null) { 1740 parseField(cur, count, field); 1741 } else if (cur == 'z') { 1742 if (count > 4) { 1743 throw new IllegalArgumentException("Too many pattern letters: " + cur); 1744 } else if (count == 4) { 1745 appendZoneText(TextStyle.FULL); 1746 } else { 1747 appendZoneText(TextStyle.SHORT); 1748 } 1749 } else if (cur == 'V') { 1750 if (count != 2) { 1751 throw new IllegalArgumentException("Pattern letter count must be 2: " + cur); 1752 } 1753 appendZoneId(); 1754 } else if (cur == 'v') { 1755 if (count == 1) { 1756 appendGenericZoneText(TextStyle.SHORT); 1757 } else if (count == 4) { 1758 appendGenericZoneText(TextStyle.FULL); 1759 } else { 1760 throw new IllegalArgumentException("Wrong number of pattern letters: " + cur); 1761 } 1762 } else if (cur == 'Z') { 1763 if (count < 4) { 1764 appendOffset("+HHMM", "+0000"); 1765 } else if (count == 4) { 1766 appendLocalizedOffset(TextStyle.FULL); 1767 } else if (count == 5) { 1768 appendOffset("+HH:MM:ss","Z"); 1769 } else { 1770 throw new IllegalArgumentException("Too many pattern letters: " + cur); 1771 } 1772 } else if (cur == 'O') { 1773 if (count == 1) { 1774 appendLocalizedOffset(TextStyle.SHORT); 1775 } else if (count == 4) { 1776 appendLocalizedOffset(TextStyle.FULL); 1777 } else { 1778 throw new IllegalArgumentException("Pattern letter count must be 1 or 4: " + cur); 1779 } 1780 } else if (cur == 'X') { 1781 if (count > 5) { 1782 throw new IllegalArgumentException("Too many pattern letters: " + cur); 1783 } 1784 appendOffset(OffsetIdPrinterParser.PATTERNS[count + (count == 1 ? 0 : 1)], "Z"); 1785 } else if (cur == 'x') { 1786 if (count > 5) { 1787 throw new IllegalArgumentException("Too many pattern letters: " + cur); 1788 } 1789 String zero = (count == 1 ? "+00" : (count % 2 == 0 ? "+0000" : "+00:00")); 1790 appendOffset(OffsetIdPrinterParser.PATTERNS[count + (count == 1 ? 0 : 1)], zero); 1791 } else if (cur == 'W') { 1792 // Fields defined by Locale 1793 if (count > 1) { 1794 throw new IllegalArgumentException("Too many pattern letters: " + cur); 1795 } 1796 appendValue(new WeekBasedFieldPrinterParser(cur, count, count, count)); 1797 } else if (cur == 'w') { 1798 // Fields defined by Locale 1799 if (count > 2) { 1800 throw new IllegalArgumentException("Too many pattern letters: " + cur); 1801 } 1802 appendValue(new WeekBasedFieldPrinterParser(cur, count, count, 2)); 1803 } else if (cur == 'Y') { 1804 // Fields defined by Locale 1805 if (count == 2) { 1806 appendValue(new WeekBasedFieldPrinterParser(cur, count, count, 2)); 1807 } else { 1808 appendValue(new WeekBasedFieldPrinterParser(cur, count, count, 19)); 1809 } 1810 } else { 1811 throw new IllegalArgumentException("Unknown pattern letter: " + cur); 1812 } 1813 pos--; 1814 1815 } else if (cur == '\'') { 1816 // parse literals 1817 int start = pos++; 1818 for ( ; pos < pattern.length(); pos++) { 1819 if (pattern.charAt(pos) == '\'') { 1820 if (pos + 1 < pattern.length() && pattern.charAt(pos + 1) == '\'') { 1821 pos++; 1822 } else { 1823 break; // end of literal 1824 } 1825 } 1826 } 1827 if (pos >= pattern.length()) { 1828 throw new IllegalArgumentException("Pattern ends with an incomplete string literal: " + pattern); 1829 } 1830 String str = pattern.substring(start + 1, pos); 1831 if (str.isEmpty()) { 1832 appendLiteral('\''); 1833 } else { 1834 appendLiteral(str.replace("''", "'")); 1835 } 1836 1837 } else if (cur == '[') { 1838 optionalStart(); 1839 1840 } else if (cur == ']') { 1841 if (active.parent == null) { 1842 throw new IllegalArgumentException("Pattern invalid as it contains ] without previous ["); 1843 } 1844 optionalEnd(); 1845 1846 } else if (cur == '{' || cur == '}' || cur == '#') { 1847 throw new IllegalArgumentException("Pattern includes reserved character: '" + cur + "'"); 1848 } else { 1849 appendLiteral(cur); 1850 } 1851 } 1852 } 1853 1854 @SuppressWarnings("fallthrough") 1855 private void parseField(char cur, int count, TemporalField field) { 1856 boolean standalone = false; 1857 switch (cur) { 1858 case 'u': 1859 case 'y': 1860 if (count == 2) { 1861 appendValueReduced(field, 2, 2, ReducedPrinterParser.BASE_DATE); 1862 } else if (count < 4) { 1863 appendValue(field, count, 19, SignStyle.NORMAL); 1864 } else { 1865 appendValue(field, count, 19, SignStyle.EXCEEDS_PAD); 1866 } 1867 break; 1868 case 'c': 1869 if (count == 1) { 1870 appendValue(new WeekBasedFieldPrinterParser(cur, count, count, count)); 1871 break; 1872 } else if (count == 2) { 1873 throw new IllegalArgumentException("Invalid pattern \"cc\""); 1874 } 1875 /*fallthrough*/ 1876 case 'L': 1877 case 'q': 1878 standalone = true; 1879 /*fallthrough*/ 1880 case 'M': 1881 case 'Q': 1882 case 'E': 1883 case 'e': 1884 switch (count) { 1885 case 1: 1886 case 2: 1887 if (cur == 'e') { 1888 appendValue(new WeekBasedFieldPrinterParser(cur, count, count, count)); 1889 } else if (cur == 'E') { 1890 appendText(field, TextStyle.SHORT); 1891 } else { 1892 if (count == 1) { 1893 appendValue(field); 1894 } else { 1895 appendValue(field, 2); 1896 } 1897 } 1898 break; 1899 case 3: 1900 appendText(field, standalone ? TextStyle.SHORT_STANDALONE : TextStyle.SHORT); 1901 break; 1902 case 4: 1903 appendText(field, standalone ? TextStyle.FULL_STANDALONE : TextStyle.FULL); 1904 break; 1905 case 5: 1906 appendText(field, standalone ? TextStyle.NARROW_STANDALONE : TextStyle.NARROW); 1907 break; 1908 default: 1909 throw new IllegalArgumentException("Too many pattern letters: " + cur); 1910 } 1911 break; 1912 case 'a': 1913 if (count == 1) { 1914 appendText(field, TextStyle.SHORT); 1915 } else { 1916 throw new IllegalArgumentException("Too many pattern letters: " + cur); 1917 } 1918 break; 1919 case 'G': 1920 switch (count) { 1921 case 1: 1922 case 2: 1923 case 3: 1924 appendText(field, TextStyle.SHORT); 1925 break; 1926 case 4: 1927 appendText(field, TextStyle.FULL); 1928 break; 1929 case 5: 1930 appendText(field, TextStyle.NARROW); 1931 break; 1932 default: 1933 throw new IllegalArgumentException("Too many pattern letters: " + cur); 1934 } 1935 break; 1936 case 'S': 1937 appendFraction(NANO_OF_SECOND, count, count, false); 1938 break; 1939 case 'F': 1940 if (count == 1) { 1941 appendValue(field); 1942 } else { 1943 throw new IllegalArgumentException("Too many pattern letters: " + cur); 1944 } 1945 break; 1946 case 'd': 1947 case 'h': 1948 case 'H': 1949 case 'k': 1950 case 'K': 1951 case 'm': 1952 case 's': 1953 if (count == 1) { 1954 appendValue(field); 1955 } else if (count == 2) { 1956 appendValue(field, count); 1957 } else { 1958 throw new IllegalArgumentException("Too many pattern letters: " + cur); 1959 } 1960 break; 1961 case 'D': 1962 if (count == 1) { 1963 appendValue(field); 1964 } else if (count == 2 || count == 3) { 1965 appendValue(field, count, 3, SignStyle.NOT_NEGATIVE); 1966 } else { 1967 throw new IllegalArgumentException("Too many pattern letters: " + cur); 1968 } 1969 break; 1970 case 'g': 1971 appendValue(field, count, 19, SignStyle.NORMAL); 1972 break; 1973 case 'A': 1974 case 'n': 1975 case 'N': 1976 appendValue(field, count, 19, SignStyle.NOT_NEGATIVE); 1977 break; 1978 default: 1979 if (count == 1) { 1980 appendValue(field); 1981 } else { 1982 appendValue(field, count); 1983 } 1984 break; 1985 } 1986 } 1987 1988 /** Map of letters to fields. */ 1989 private static final Map<Character, TemporalField> FIELD_MAP = new HashMap<>(); 1990 static { 1991 // SDF = SimpleDateFormat 1992 FIELD_MAP.put('G', ChronoField.ERA); // SDF, LDML (different to both for 1/2 chars) 1993 FIELD_MAP.put('y', ChronoField.YEAR_OF_ERA); // SDF, LDML 1994 FIELD_MAP.put('u', ChronoField.YEAR); // LDML (different in SDF) 1995 FIELD_MAP.put('Q', IsoFields.QUARTER_OF_YEAR); // LDML (removed quarter from 310) 1996 FIELD_MAP.put('q', IsoFields.QUARTER_OF_YEAR); // LDML (stand-alone) 1997 FIELD_MAP.put('M', ChronoField.MONTH_OF_YEAR); // SDF, LDML 1998 FIELD_MAP.put('L', ChronoField.MONTH_OF_YEAR); // SDF, LDML (stand-alone) 1999 FIELD_MAP.put('D', ChronoField.DAY_OF_YEAR); // SDF, LDML 2000 FIELD_MAP.put('d', ChronoField.DAY_OF_MONTH); // SDF, LDML 2001 FIELD_MAP.put('F', ChronoField.ALIGNED_DAY_OF_WEEK_IN_MONTH); // SDF, LDML 2002 FIELD_MAP.put('E', ChronoField.DAY_OF_WEEK); // SDF, LDML (different to both for 1/2 chars) 2003 FIELD_MAP.put('c', ChronoField.DAY_OF_WEEK); // LDML (stand-alone) 2004 FIELD_MAP.put('e', ChronoField.DAY_OF_WEEK); // LDML (needs localized week number) 2005 FIELD_MAP.put('a', ChronoField.AMPM_OF_DAY); // SDF, LDML 2006 FIELD_MAP.put('H', ChronoField.HOUR_OF_DAY); // SDF, LDML 2007 FIELD_MAP.put('k', ChronoField.CLOCK_HOUR_OF_DAY); // SDF, LDML 2008 FIELD_MAP.put('K', ChronoField.HOUR_OF_AMPM); // SDF, LDML 2009 FIELD_MAP.put('h', ChronoField.CLOCK_HOUR_OF_AMPM); // SDF, LDML 2010 FIELD_MAP.put('m', ChronoField.MINUTE_OF_HOUR); // SDF, LDML 2011 FIELD_MAP.put('s', ChronoField.SECOND_OF_MINUTE); // SDF, LDML 2012 FIELD_MAP.put('S', ChronoField.NANO_OF_SECOND); // LDML (SDF uses milli-of-second number) 2013 FIELD_MAP.put('A', ChronoField.MILLI_OF_DAY); // LDML 2014 FIELD_MAP.put('n', ChronoField.NANO_OF_SECOND); // 310 (proposed for LDML) 2015 FIELD_MAP.put('N', ChronoField.NANO_OF_DAY); // 310 (proposed for LDML) 2016 FIELD_MAP.put('g', JulianFields.MODIFIED_JULIAN_DAY); 2017 // 310 - z - time-zone names, matches LDML and SimpleDateFormat 1 to 4 2018 // 310 - Z - matches SimpleDateFormat and LDML 2019 // 310 - V - time-zone id, matches LDML 2020 // 310 - v - general timezone names, not matching exactly with LDML because LDML specify to fall back 2021 // to 'VVVV' if general-nonlocation unavailable but here it's not falling back because of lack of data 2022 // 310 - p - prefix for padding 2023 // 310 - X - matches LDML, almost matches SDF for 1, exact match 2&3, extended 4&5 2024 // 310 - x - matches LDML 2025 // 310 - w, W, and Y are localized forms matching LDML 2026 // LDML - U - cycle year name, not supported by 310 yet 2027 // LDML - l - deprecated 2028 // LDML - j - not relevant 2029 } 2030 2031 //----------------------------------------------------------------------- 2032 /** 2033 * Causes the next added printer/parser to pad to a fixed width using a space. 2034 * <p> 2035 * This padding will pad to a fixed width using spaces. 2036 * <p> 2037 * During formatting, the decorated element will be output and then padded 2038 * to the specified width. An exception will be thrown during formatting if 2039 * the pad width is exceeded. 2040 * <p> 2041 * During parsing, the padding and decorated element are parsed. 2042 * If parsing is lenient, then the pad width is treated as a maximum. 2043 * The padding is parsed greedily. Thus, if the decorated element starts with 2044 * the pad character, it will not be parsed. 2045 * 2046 * @param padWidth the pad width, 1 or greater 2047 * @return this, for chaining, not null 2048 * @throws IllegalArgumentException if pad width is too small 2049 */ 2050 public DateTimeFormatterBuilder padNext(int padWidth) { 2051 return padNext(padWidth, ' '); 2052 } 2053 2054 /** 2055 * Causes the next added printer/parser to pad to a fixed width. 2056 * <p> 2057 * This padding is intended for padding other than zero-padding. 2058 * Zero-padding should be achieved using the appendValue methods. 2059 * <p> 2060 * During formatting, the decorated element will be output and then padded 2061 * to the specified width. An exception will be thrown during formatting if 2062 * the pad width is exceeded. 2063 * <p> 2064 * During parsing, the padding and decorated element are parsed. 2065 * If parsing is lenient, then the pad width is treated as a maximum. 2066 * If parsing is case insensitive, then the pad character is matched ignoring case. 2067 * The padding is parsed greedily. Thus, if the decorated element starts with 2068 * the pad character, it will not be parsed. 2069 * 2070 * @param padWidth the pad width, 1 or greater 2071 * @param padChar the pad character 2072 * @return this, for chaining, not null 2073 * @throws IllegalArgumentException if pad width is too small 2074 */ 2075 public DateTimeFormatterBuilder padNext(int padWidth, char padChar) { 2076 if (padWidth < 1) { 2077 throw new IllegalArgumentException("The pad width must be at least one but was " + padWidth); 2078 } 2079 active.padNextWidth = padWidth; 2080 active.padNextChar = padChar; 2081 active.valueParserIndex = -1; 2082 return this; 2083 } 2084 2085 //----------------------------------------------------------------------- 2086 /** 2087 * Mark the start of an optional section. 2088 * <p> 2089 * The output of formatting can include optional sections, which may be nested. 2090 * An optional section is started by calling this method and ended by calling 2091 * {@link #optionalEnd()} or by ending the build process. 2092 * <p> 2093 * All elements in the optional section are treated as optional. 2094 * During formatting, the section is only output if data is available in the 2095 * {@code TemporalAccessor} for all the elements in the section. 2096 * During parsing, the whole section may be missing from the parsed string. 2097 * <p> 2098 * For example, consider a builder setup as 2099 * {@code builder.appendValue(HOUR_OF_DAY,2).optionalStart().appendValue(MINUTE_OF_HOUR,2)}. 2100 * The optional section ends automatically at the end of the builder. 2101 * During formatting, the minute will only be output if its value can be obtained from the date-time. 2102 * During parsing, the input will be successfully parsed whether the minute is present or not. 2103 * 2104 * @return this, for chaining, not null 2105 */ 2106 public DateTimeFormatterBuilder optionalStart() { 2107 active.valueParserIndex = -1; 2108 active = new DateTimeFormatterBuilder(active, true); 2109 return this; 2110 } 2111 2112 /** 2113 * Ends an optional section. 2114 * <p> 2115 * The output of formatting can include optional sections, which may be nested. 2116 * An optional section is started by calling {@link #optionalStart()} and ended 2117 * using this method (or at the end of the builder). 2118 * <p> 2119 * Calling this method without having previously called {@code optionalStart} 2120 * will throw an exception. 2121 * Calling this method immediately after calling {@code optionalStart} has no effect 2122 * on the formatter other than ending the (empty) optional section. 2123 * <p> 2124 * All elements in the optional section are treated as optional. 2125 * During formatting, the section is only output if data is available in the 2126 * {@code TemporalAccessor} for all the elements in the section. 2127 * During parsing, the whole section may be missing from the parsed string. 2128 * <p> 2129 * For example, consider a builder setup as 2130 * {@code builder.appendValue(HOUR_OF_DAY,2).optionalStart().appendValue(MINUTE_OF_HOUR,2).optionalEnd()}. 2131 * During formatting, the minute will only be output if its value can be obtained from the date-time. 2132 * During parsing, the input will be successfully parsed whether the minute is present or not. 2133 * 2134 * @return this, for chaining, not null 2135 * @throws IllegalStateException if there was no previous call to {@code optionalStart} 2136 */ 2137 public DateTimeFormatterBuilder optionalEnd() { 2138 if (active.parent == null) { 2139 throw new IllegalStateException("Cannot call optionalEnd() as there was no previous call to optionalStart()"); 2140 } 2141 if (active.printerParsers.size() > 0) { 2142 CompositePrinterParser cpp = new CompositePrinterParser(active.printerParsers, active.optional); 2143 active = active.parent; 2144 appendInternal(cpp); 2145 } else { 2146 active = active.parent; 2147 } 2148 return this; 2149 } 2150 2151 //----------------------------------------------------------------------- 2152 /** 2153 * Appends a printer and/or parser to the internal list handling padding. 2154 * 2155 * @param pp the printer-parser to add, not null 2156 * @return the index into the active parsers list 2157 */ 2158 private int appendInternal(DateTimePrinterParser pp) { 2159 Objects.requireNonNull(pp, "pp"); 2160 if (active.padNextWidth > 0) { 2161 if (pp != null) { 2162 pp = new PadPrinterParserDecorator(pp, active.padNextWidth, active.padNextChar); 2163 } 2164 active.padNextWidth = 0; 2165 active.padNextChar = 0; 2166 } 2167 active.printerParsers.add(pp); 2168 active.valueParserIndex = -1; 2169 return active.printerParsers.size() - 1; 2170 } 2171 2172 //----------------------------------------------------------------------- 2173 /** 2174 * Completes this builder by creating the {@code DateTimeFormatter} 2175 * using the default locale. 2176 * <p> 2177 * This will create a formatter with the {@linkplain Locale#getDefault(Locale.Category) default FORMAT locale}. 2178 * Numbers will be printed and parsed using the standard DecimalStyle. 2179 * The resolver style will be {@link ResolverStyle#SMART SMART}. 2180 * <p> 2181 * Calling this method will end any open optional sections by repeatedly 2182 * calling {@link #optionalEnd()} before creating the formatter. 2183 * <p> 2184 * This builder can still be used after creating the formatter if desired, 2185 * although the state may have been changed by calls to {@code optionalEnd}. 2186 * 2187 * @return the created formatter, not null 2188 */ 2189 public DateTimeFormatter toFormatter() { 2190 return toFormatter(Locale.getDefault(Locale.Category.FORMAT)); 2191 } 2192 2193 /** 2194 * Completes this builder by creating the {@code DateTimeFormatter} 2195 * using the specified locale. 2196 * <p> 2197 * This will create a formatter with the specified locale. 2198 * Numbers will be printed and parsed using the standard DecimalStyle. 2199 * The resolver style will be {@link ResolverStyle#SMART SMART}. 2200 * <p> 2201 * Calling this method will end any open optional sections by repeatedly 2202 * calling {@link #optionalEnd()} before creating the formatter. 2203 * <p> 2204 * This builder can still be used after creating the formatter if desired, 2205 * although the state may have been changed by calls to {@code optionalEnd}. 2206 * 2207 * @param locale the locale to use for formatting, not null 2208 * @return the created formatter, not null 2209 */ 2210 public DateTimeFormatter toFormatter(Locale locale) { 2211 return toFormatter(locale, ResolverStyle.SMART, null); 2212 } 2213 2214 /** 2215 * Completes this builder by creating the formatter. 2216 * This uses the default locale. 2217 * 2218 * @param resolverStyle the resolver style to use, not null 2219 * @return the created formatter, not null 2220 */ 2221 DateTimeFormatter toFormatter(ResolverStyle resolverStyle, Chronology chrono) { 2222 return toFormatter(Locale.getDefault(Locale.Category.FORMAT), resolverStyle, chrono); 2223 } 2224 2225 /** 2226 * Completes this builder by creating the formatter. 2227 * 2228 * @param locale the locale to use for formatting, not null 2229 * @param chrono the chronology to use, may be null 2230 * @return the created formatter, not null 2231 */ 2232 private DateTimeFormatter toFormatter(Locale locale, ResolverStyle resolverStyle, Chronology chrono) { 2233 Objects.requireNonNull(locale, "locale"); 2234 while (active.parent != null) { 2235 optionalEnd(); 2236 } 2237 CompositePrinterParser pp = new CompositePrinterParser(printerParsers, false); 2238 return new DateTimeFormatter(pp, locale, DecimalStyle.STANDARD, 2239 resolverStyle, null, chrono, null); 2240 } 2241 2242 //----------------------------------------------------------------------- 2243 /** 2244 * Strategy for formatting/parsing date-time information. 2245 * <p> 2246 * The printer may format any part, or the whole, of the input date-time object. 2247 * Typically, a complete format is constructed from a number of smaller 2248 * units, each outputting a single field. 2249 * <p> 2250 * The parser may parse any piece of text from the input, storing the result 2251 * in the context. Typically, each individual parser will just parse one 2252 * field, such as the day-of-month, storing the value in the context. 2253 * Once the parse is complete, the caller will then resolve the parsed values 2254 * to create the desired object, such as a {@code LocalDate}. 2255 * <p> 2256 * The parse position will be updated during the parse. Parsing will start at 2257 * the specified index and the return value specifies the new parse position 2258 * for the next parser. If an error occurs, the returned index will be negative 2259 * and will have the error position encoded using the complement operator. 2260 * 2261 * @implSpec 2262 * This interface must be implemented with care to ensure other classes operate correctly. 2263 * All implementations that can be instantiated must be final, immutable and thread-safe. 2264 * <p> 2265 * The context is not a thread-safe object and a new instance will be created 2266 * for each format that occurs. The context must not be stored in an instance 2267 * variable or shared with any other threads. 2268 */ 2269 interface DateTimePrinterParser { 2270 2271 /** 2272 * Prints the date-time object to the buffer. 2273 * <p> 2274 * The context holds information to use during the format. 2275 * It also contains the date-time information to be printed. 2276 * <p> 2277 * The buffer must not be mutated beyond the content controlled by the implementation. 2278 * 2279 * @param context the context to format using, not null 2280 * @param buf the buffer to append to, not null 2281 * @return false if unable to query the value from the date-time, true otherwise 2282 * @throws DateTimeException if the date-time cannot be printed successfully 2283 */ 2284 boolean format(DateTimePrintContext context, StringBuilder buf); 2285 2286 /** 2287 * Parses text into date-time information. 2288 * <p> 2289 * The context holds information to use during the parse. 2290 * It is also used to store the parsed date-time information. 2291 * 2292 * @param context the context to use and parse into, not null 2293 * @param text the input text to parse, not null 2294 * @param position the position to start parsing at, from 0 to the text length 2295 * @return the new parse position, where negative means an error with the 2296 * error position encoded using the complement ~ operator 2297 * @throws NullPointerException if the context or text is null 2298 * @throws IndexOutOfBoundsException if the position is invalid 2299 */ 2300 int parse(DateTimeParseContext context, CharSequence text, int position); 2301 } 2302 2303 //----------------------------------------------------------------------- 2304 /** 2305 * Composite printer and parser. 2306 */ 2307 static final class CompositePrinterParser implements DateTimePrinterParser { 2308 private final DateTimePrinterParser[] printerParsers; 2309 private final boolean optional; 2310 2311 CompositePrinterParser(List<DateTimePrinterParser> printerParsers, boolean optional) { 2312 this(printerParsers.toArray(new DateTimePrinterParser[printerParsers.size()]), optional); 2313 } 2314 2315 CompositePrinterParser(DateTimePrinterParser[] printerParsers, boolean optional) { 2316 this.printerParsers = printerParsers; 2317 this.optional = optional; 2318 } 2319 2320 /** 2321 * Returns a copy of this printer-parser with the optional flag changed. 2322 * 2323 * @param optional the optional flag to set in the copy 2324 * @return the new printer-parser, not null 2325 */ 2326 public CompositePrinterParser withOptional(boolean optional) { 2327 if (optional == this.optional) { 2328 return this; 2329 } 2330 return new CompositePrinterParser(printerParsers, optional); 2331 } 2332 2333 @Override 2334 public boolean format(DateTimePrintContext context, StringBuilder buf) { 2335 int length = buf.length(); 2336 if (optional) { 2337 context.startOptional(); 2338 } 2339 try { 2340 for (DateTimePrinterParser pp : printerParsers) { 2341 if (pp.format(context, buf) == false) { 2342 buf.setLength(length); // reset buffer 2343 return true; 2344 } 2345 } 2346 } finally { 2347 if (optional) { 2348 context.endOptional(); 2349 } 2350 } 2351 return true; 2352 } 2353 2354 @Override 2355 public int parse(DateTimeParseContext context, CharSequence text, int position) { 2356 if (optional) { 2357 context.startOptional(); 2358 int pos = position; 2359 for (DateTimePrinterParser pp : printerParsers) { 2360 pos = pp.parse(context, text, pos); 2361 if (pos < 0) { 2362 context.endOptional(false); 2363 return position; // return original position 2364 } 2365 } 2366 context.endOptional(true); 2367 return pos; 2368 } else { 2369 for (DateTimePrinterParser pp : printerParsers) { 2370 position = pp.parse(context, text, position); 2371 if (position < 0) { 2372 break; 2373 } 2374 } 2375 return position; 2376 } 2377 } 2378 2379 @Override 2380 public String toString() { 2381 StringBuilder buf = new StringBuilder(); 2382 if (printerParsers != null) { 2383 buf.append(optional ? "[" : "("); 2384 for (DateTimePrinterParser pp : printerParsers) { 2385 buf.append(pp); 2386 } 2387 buf.append(optional ? "]" : ")"); 2388 } 2389 return buf.toString(); 2390 } 2391 } 2392 2393 //----------------------------------------------------------------------- 2394 /** 2395 * Pads the output to a fixed width. 2396 */ 2397 static final class PadPrinterParserDecorator implements DateTimePrinterParser { 2398 private final DateTimePrinterParser printerParser; 2399 private final int padWidth; 2400 private final char padChar; 2401 2402 /** 2403 * Constructor. 2404 * 2405 * @param printerParser the printer, not null 2406 * @param padWidth the width to pad to, 1 or greater 2407 * @param padChar the pad character 2408 */ 2409 PadPrinterParserDecorator(DateTimePrinterParser printerParser, int padWidth, char padChar) { 2410 // input checked by DateTimeFormatterBuilder 2411 this.printerParser = printerParser; 2412 this.padWidth = padWidth; 2413 this.padChar = padChar; 2414 } 2415 2416 @Override 2417 public boolean format(DateTimePrintContext context, StringBuilder buf) { 2418 int preLen = buf.length(); 2419 if (printerParser.format(context, buf) == false) { 2420 return false; 2421 } 2422 int len = buf.length() - preLen; 2423 if (len > padWidth) { 2424 throw new DateTimeException( 2425 "Cannot print as output of " + len + " characters exceeds pad width of " + padWidth); 2426 } 2427 for (int i = 0; i < padWidth - len; i++) { 2428 buf.insert(preLen, padChar); 2429 } 2430 return true; 2431 } 2432 2433 @Override 2434 public int parse(DateTimeParseContext context, CharSequence text, int position) { 2435 // cache context before changed by decorated parser 2436 final boolean strict = context.isStrict(); 2437 // parse 2438 if (position > text.length()) { 2439 throw new IndexOutOfBoundsException(); 2440 } 2441 if (position == text.length()) { 2442 return ~position; // no more characters in the string 2443 } 2444 int endPos = position + padWidth; 2445 if (endPos > text.length()) { 2446 if (strict) { 2447 return ~position; // not enough characters in the string to meet the parse width 2448 } 2449 endPos = text.length(); 2450 } 2451 int pos = position; 2452 while (pos < endPos && context.charEquals(text.charAt(pos), padChar)) { 2453 pos++; 2454 } 2455 text = text.subSequence(0, endPos); 2456 int resultPos = printerParser.parse(context, text, pos); 2457 if (resultPos != endPos && strict) { 2458 return ~(position + pos); // parse of decorated field didn't parse to the end 2459 } 2460 return resultPos; 2461 } 2462 2463 @Override 2464 public String toString() { 2465 return "Pad(" + printerParser + "," + padWidth + (padChar == ' ' ? ")" : ",'" + padChar + "')"); 2466 } 2467 } 2468 2469 //----------------------------------------------------------------------- 2470 /** 2471 * Enumeration to apply simple parse settings. 2472 */ 2473 static enum SettingsParser implements DateTimePrinterParser { 2474 SENSITIVE, 2475 INSENSITIVE, 2476 STRICT, 2477 LENIENT; 2478 2479 @Override 2480 public boolean format(DateTimePrintContext context, StringBuilder buf) { 2481 return true; // nothing to do here 2482 } 2483 2484 @Override 2485 public int parse(DateTimeParseContext context, CharSequence text, int position) { 2486 // using ordinals to avoid javac synthetic inner class 2487 switch (ordinal()) { 2488 case 0: context.setCaseSensitive(true); break; 2489 case 1: context.setCaseSensitive(false); break; 2490 case 2: context.setStrict(true); break; 2491 case 3: context.setStrict(false); break; 2492 } 2493 return position; 2494 } 2495 2496 @Override 2497 public String toString() { 2498 // using ordinals to avoid javac synthetic inner class 2499 switch (ordinal()) { 2500 case 0: return "ParseCaseSensitive(true)"; 2501 case 1: return "ParseCaseSensitive(false)"; 2502 case 2: return "ParseStrict(true)"; 2503 case 3: return "ParseStrict(false)"; 2504 } 2505 throw new IllegalStateException("Unreachable"); 2506 } 2507 } 2508 2509 //----------------------------------------------------------------------- 2510 /** 2511 * Defaults a value into the parse if not currently present. 2512 */ 2513 static class DefaultValueParser implements DateTimePrinterParser { 2514 private final TemporalField field; 2515 private final long value; 2516 2517 DefaultValueParser(TemporalField field, long value) { 2518 this.field = field; 2519 this.value = value; 2520 } 2521 2522 public boolean format(DateTimePrintContext context, StringBuilder buf) { 2523 return true; 2524 } 2525 2526 public int parse(DateTimeParseContext context, CharSequence text, int position) { 2527 if (context.getParsed(field) == null) { 2528 context.setParsedField(field, value, position, position); 2529 } 2530 return position; 2531 } 2532 } 2533 2534 //----------------------------------------------------------------------- 2535 /** 2536 * Prints or parses a character literal. 2537 */ 2538 static final class CharLiteralPrinterParser implements DateTimePrinterParser { 2539 private final char literal; 2540 2541 CharLiteralPrinterParser(char literal) { 2542 this.literal = literal; 2543 } 2544 2545 @Override 2546 public boolean format(DateTimePrintContext context, StringBuilder buf) { 2547 buf.append(literal); 2548 return true; 2549 } 2550 2551 @Override 2552 public int parse(DateTimeParseContext context, CharSequence text, int position) { 2553 int length = text.length(); 2554 if (position == length) { 2555 return ~position; 2556 } 2557 char ch = text.charAt(position); 2558 if (ch != literal) { 2559 if (context.isCaseSensitive() || 2560 (Character.toUpperCase(ch) != Character.toUpperCase(literal) && 2561 Character.toLowerCase(ch) != Character.toLowerCase(literal))) { 2562 return ~position; 2563 } 2564 } 2565 return position + 1; 2566 } 2567 2568 @Override 2569 public String toString() { 2570 if (literal == '\'') { 2571 return "''"; 2572 } 2573 return "'" + literal + "'"; 2574 } 2575 } 2576 2577 //----------------------------------------------------------------------- 2578 /** 2579 * Prints or parses a string literal. 2580 */ 2581 static final class StringLiteralPrinterParser implements DateTimePrinterParser { 2582 private final String literal; 2583 2584 StringLiteralPrinterParser(String literal) { 2585 this.literal = literal; // validated by caller 2586 } 2587 2588 @Override 2589 public boolean format(DateTimePrintContext context, StringBuilder buf) { 2590 buf.append(literal); 2591 return true; 2592 } 2593 2594 @Override 2595 public int parse(DateTimeParseContext context, CharSequence text, int position) { 2596 int length = text.length(); 2597 if (position > length || position < 0) { 2598 throw new IndexOutOfBoundsException(); 2599 } 2600 if (context.subSequenceEquals(text, position, literal, 0, literal.length()) == false) { 2601 return ~position; 2602 } 2603 return position + literal.length(); 2604 } 2605 2606 @Override 2607 public String toString() { 2608 String converted = literal.replace("'", "''"); 2609 return "'" + converted + "'"; 2610 } 2611 } 2612 2613 //----------------------------------------------------------------------- 2614 /** 2615 * Prints and parses a numeric date-time field with optional padding. 2616 */ 2617 static class NumberPrinterParser implements DateTimePrinterParser { 2618 2619 /** 2620 * Array of 10 to the power of n. 2621 */ 2622 static final long[] EXCEED_POINTS = new long[] { 2623 0L, 2624 10L, 2625 100L, 2626 1000L, 2627 10000L, 2628 100000L, 2629 1000000L, 2630 10000000L, 2631 100000000L, 2632 1000000000L, 2633 10000000000L, 2634 }; 2635 2636 final TemporalField field; 2637 final int minWidth; 2638 final int maxWidth; 2639 private final SignStyle signStyle; 2640 final int subsequentWidth; 2641 2642 /** 2643 * Constructor. 2644 * 2645 * @param field the field to format, not null 2646 * @param minWidth the minimum field width, from 1 to 19 2647 * @param maxWidth the maximum field width, from minWidth to 19 2648 * @param signStyle the positive/negative sign style, not null 2649 */ 2650 NumberPrinterParser(TemporalField field, int minWidth, int maxWidth, SignStyle signStyle) { 2651 // validated by caller 2652 this.field = field; 2653 this.minWidth = minWidth; 2654 this.maxWidth = maxWidth; 2655 this.signStyle = signStyle; 2656 this.subsequentWidth = 0; 2657 } 2658 2659 /** 2660 * Constructor. 2661 * 2662 * @param field the field to format, not null 2663 * @param minWidth the minimum field width, from 1 to 19 2664 * @param maxWidth the maximum field width, from minWidth to 19 2665 * @param signStyle the positive/negative sign style, not null 2666 * @param subsequentWidth the width of subsequent non-negative numbers, 0 or greater, 2667 * -1 if fixed width due to active adjacent parsing 2668 */ 2669 protected NumberPrinterParser(TemporalField field, int minWidth, int maxWidth, SignStyle signStyle, int subsequentWidth) { 2670 // validated by caller 2671 this.field = field; 2672 this.minWidth = minWidth; 2673 this.maxWidth = maxWidth; 2674 this.signStyle = signStyle; 2675 this.subsequentWidth = subsequentWidth; 2676 } 2677 2678 /** 2679 * Returns a new instance with fixed width flag set. 2680 * 2681 * @return a new updated printer-parser, not null 2682 */ 2683 NumberPrinterParser withFixedWidth() { 2684 if (subsequentWidth == -1) { 2685 return this; 2686 } 2687 return new NumberPrinterParser(field, minWidth, maxWidth, signStyle, -1); 2688 } 2689 2690 /** 2691 * Returns a new instance with an updated subsequent width. 2692 * 2693 * @param subsequentWidth the width of subsequent non-negative numbers, 0 or greater 2694 * @return a new updated printer-parser, not null 2695 */ 2696 NumberPrinterParser withSubsequentWidth(int subsequentWidth) { 2697 return new NumberPrinterParser(field, minWidth, maxWidth, signStyle, this.subsequentWidth + subsequentWidth); 2698 } 2699 2700 @Override 2701 public boolean format(DateTimePrintContext context, StringBuilder buf) { 2702 Long valueLong = context.getValue(field); 2703 if (valueLong == null) { 2704 return false; 2705 } 2706 long value = getValue(context, valueLong); 2707 DecimalStyle decimalStyle = context.getDecimalStyle(); 2708 String str = (value == Long.MIN_VALUE ? "9223372036854775808" : Long.toString(Math.abs(value))); 2709 if (str.length() > maxWidth) { 2710 throw new DateTimeException("Field " + field + 2711 " cannot be printed as the value " + value + 2712 " exceeds the maximum print width of " + maxWidth); 2713 } 2714 str = decimalStyle.convertNumberToI18N(str); 2715 2716 if (value >= 0) { 2717 switch (signStyle) { 2718 case EXCEEDS_PAD: 2719 if (minWidth < 19 && value >= EXCEED_POINTS[minWidth]) { 2720 buf.append(decimalStyle.getPositiveSign()); 2721 } 2722 break; 2723 case ALWAYS: 2724 buf.append(decimalStyle.getPositiveSign()); 2725 break; 2726 } 2727 } else { 2728 switch (signStyle) { 2729 case NORMAL: 2730 case EXCEEDS_PAD: 2731 case ALWAYS: 2732 buf.append(decimalStyle.getNegativeSign()); 2733 break; 2734 case NOT_NEGATIVE: 2735 throw new DateTimeException("Field " + field + 2736 " cannot be printed as the value " + value + 2737 " cannot be negative according to the SignStyle"); 2738 } 2739 } 2740 for (int i = 0; i < minWidth - str.length(); i++) { 2741 buf.append(decimalStyle.getZeroDigit()); 2742 } 2743 buf.append(str); 2744 return true; 2745 } 2746 2747 /** 2748 * Gets the value to output. 2749 * 2750 * @param context the context 2751 * @param value the value of the field, not null 2752 * @return the value 2753 */ 2754 long getValue(DateTimePrintContext context, long value) { 2755 return value; 2756 } 2757 2758 /** 2759 * For NumberPrinterParser, the width is fixed depending on the 2760 * minWidth, maxWidth, signStyle and whether subsequent fields are fixed. 2761 * @param context the context 2762 * @return true if the field is fixed width 2763 * @see DateTimeFormatterBuilder#appendValue(java.time.temporal.TemporalField, int) 2764 */ 2765 boolean isFixedWidth(DateTimeParseContext context) { 2766 return subsequentWidth == -1 || 2767 (subsequentWidth > 0 && minWidth == maxWidth && signStyle == SignStyle.NOT_NEGATIVE); 2768 } 2769 2770 @Override 2771 public int parse(DateTimeParseContext context, CharSequence text, int position) { 2772 int length = text.length(); 2773 if (position == length) { 2774 return ~position; 2775 } 2776 char sign = text.charAt(position); // IOOBE if invalid position 2777 boolean negative = false; 2778 boolean positive = false; 2779 if (sign == context.getDecimalStyle().getPositiveSign()) { 2780 if (signStyle.parse(true, context.isStrict(), minWidth == maxWidth) == false) { 2781 return ~position; 2782 } 2783 positive = true; 2784 position++; 2785 } else if (sign == context.getDecimalStyle().getNegativeSign()) { 2786 if (signStyle.parse(false, context.isStrict(), minWidth == maxWidth) == false) { 2787 return ~position; 2788 } 2789 negative = true; 2790 position++; 2791 } else { 2792 if (signStyle == SignStyle.ALWAYS && context.isStrict()) { 2793 return ~position; 2794 } 2795 } 2796 int effMinWidth = (context.isStrict() || isFixedWidth(context) ? minWidth : 1); 2797 int minEndPos = position + effMinWidth; 2798 if (minEndPos > length) { 2799 return ~position; 2800 } 2801 int effMaxWidth = (context.isStrict() || isFixedWidth(context) ? maxWidth : 9) + Math.max(subsequentWidth, 0); 2802 long total = 0; 2803 BigInteger totalBig = null; 2804 int pos = position; 2805 for (int pass = 0; pass < 2; pass++) { 2806 int maxEndPos = Math.min(pos + effMaxWidth, length); 2807 while (pos < maxEndPos) { 2808 char ch = text.charAt(pos++); 2809 int digit = context.getDecimalStyle().convertToDigit(ch); 2810 if (digit < 0) { 2811 pos--; 2812 if (pos < minEndPos) { 2813 return ~position; // need at least min width digits 2814 } 2815 break; 2816 } 2817 if ((pos - position) > 18) { 2818 if (totalBig == null) { 2819 totalBig = BigInteger.valueOf(total); 2820 } 2821 totalBig = totalBig.multiply(BigInteger.TEN).add(BigInteger.valueOf(digit)); 2822 } else { 2823 total = total * 10 + digit; 2824 } 2825 } 2826 if (subsequentWidth > 0 && pass == 0) { 2827 // re-parse now we know the correct width 2828 int parseLen = pos - position; 2829 effMaxWidth = Math.max(effMinWidth, parseLen - subsequentWidth); 2830 pos = position; 2831 total = 0; 2832 totalBig = null; 2833 } else { 2834 break; 2835 } 2836 } 2837 if (negative) { 2838 if (totalBig != null) { 2839 if (totalBig.equals(BigInteger.ZERO) && context.isStrict()) { 2840 return ~(position - 1); // minus zero not allowed 2841 } 2842 totalBig = totalBig.negate(); 2843 } else { 2844 if (total == 0 && context.isStrict()) { 2845 return ~(position - 1); // minus zero not allowed 2846 } 2847 total = -total; 2848 } 2849 } else if (signStyle == SignStyle.EXCEEDS_PAD && context.isStrict()) { 2850 int parseLen = pos - position; 2851 if (positive) { 2852 if (parseLen <= minWidth) { 2853 return ~(position - 1); // '+' only parsed if minWidth exceeded 2854 } 2855 } else { 2856 if (parseLen > minWidth) { 2857 return ~position; // '+' must be parsed if minWidth exceeded 2858 } 2859 } 2860 } 2861 if (totalBig != null) { 2862 if (totalBig.bitLength() > 63) { 2863 // overflow, parse 1 less digit 2864 totalBig = totalBig.divide(BigInteger.TEN); 2865 pos--; 2866 } 2867 return setValue(context, totalBig.longValue(), position, pos); 2868 } 2869 return setValue(context, total, position, pos); 2870 } 2871 2872 /** 2873 * Stores the value. 2874 * 2875 * @param context the context to store into, not null 2876 * @param value the value 2877 * @param errorPos the position of the field being parsed 2878 * @param successPos the position after the field being parsed 2879 * @return the new position 2880 */ 2881 int setValue(DateTimeParseContext context, long value, int errorPos, int successPos) { 2882 return context.setParsedField(field, value, errorPos, successPos); 2883 } 2884 2885 @Override 2886 public String toString() { 2887 if (minWidth == 1 && maxWidth == 19 && signStyle == SignStyle.NORMAL) { 2888 return "Value(" + field + ")"; 2889 } 2890 if (minWidth == maxWidth && signStyle == SignStyle.NOT_NEGATIVE) { 2891 return "Value(" + field + "," + minWidth + ")"; 2892 } 2893 return "Value(" + field + "," + minWidth + "," + maxWidth + "," + signStyle + ")"; 2894 } 2895 } 2896 2897 //----------------------------------------------------------------------- 2898 /** 2899 * Prints and parses a reduced numeric date-time field. 2900 */ 2901 static final class ReducedPrinterParser extends NumberPrinterParser { 2902 /** 2903 * The base date for reduced value parsing. 2904 */ 2905 static final LocalDate BASE_DATE = LocalDate.of(2000, 1, 1); 2906 2907 private final int baseValue; 2908 private final ChronoLocalDate baseDate; 2909 2910 /** 2911 * Constructor. 2912 * 2913 * @param field the field to format, validated not null 2914 * @param minWidth the minimum field width, from 1 to 10 2915 * @param maxWidth the maximum field width, from 1 to 10 2916 * @param baseValue the base value 2917 * @param baseDate the base date 2918 */ 2919 ReducedPrinterParser(TemporalField field, int minWidth, int maxWidth, 2920 int baseValue, ChronoLocalDate baseDate) { 2921 this(field, minWidth, maxWidth, baseValue, baseDate, 0); 2922 if (minWidth < 1 || minWidth > 10) { 2923 throw new IllegalArgumentException("The minWidth must be from 1 to 10 inclusive but was " + minWidth); 2924 } 2925 if (maxWidth < 1 || maxWidth > 10) { 2926 throw new IllegalArgumentException("The maxWidth must be from 1 to 10 inclusive but was " + minWidth); 2927 } 2928 if (maxWidth < minWidth) { 2929 throw new IllegalArgumentException("Maximum width must exceed or equal the minimum width but " + 2930 maxWidth + " < " + minWidth); 2931 } 2932 if (baseDate == null) { 2933 if (field.range().isValidValue(baseValue) == false) { 2934 throw new IllegalArgumentException("The base value must be within the range of the field"); 2935 } 2936 if ((((long) baseValue) + EXCEED_POINTS[maxWidth]) > Integer.MAX_VALUE) { 2937 throw new DateTimeException("Unable to add printer-parser as the range exceeds the capacity of an int"); 2938 } 2939 } 2940 } 2941 2942 /** 2943 * Constructor. 2944 * The arguments have already been checked. 2945 * 2946 * @param field the field to format, validated not null 2947 * @param minWidth the minimum field width, from 1 to 10 2948 * @param maxWidth the maximum field width, from 1 to 10 2949 * @param baseValue the base value 2950 * @param baseDate the base date 2951 * @param subsequentWidth the subsequentWidth for this instance 2952 */ 2953 private ReducedPrinterParser(TemporalField field, int minWidth, int maxWidth, 2954 int baseValue, ChronoLocalDate baseDate, int subsequentWidth) { 2955 super(field, minWidth, maxWidth, SignStyle.NOT_NEGATIVE, subsequentWidth); 2956 this.baseValue = baseValue; 2957 this.baseDate = baseDate; 2958 } 2959 2960 @Override 2961 long getValue(DateTimePrintContext context, long value) { 2962 long absValue = Math.abs(value); 2963 int baseValue = this.baseValue; 2964 if (baseDate != null) { 2965 Chronology chrono = Chronology.from(context.getTemporal()); 2966 baseValue = chrono.date(baseDate).get(field); 2967 } 2968 if (value >= baseValue && value < baseValue + EXCEED_POINTS[minWidth]) { 2969 // Use the reduced value if it fits in minWidth 2970 return absValue % EXCEED_POINTS[minWidth]; 2971 } 2972 // Otherwise truncate to fit in maxWidth 2973 return absValue % EXCEED_POINTS[maxWidth]; 2974 } 2975 2976 @Override 2977 int setValue(DateTimeParseContext context, long value, int errorPos, int successPos) { 2978 int baseValue = this.baseValue; 2979 if (baseDate != null) { 2980 Chronology chrono = context.getEffectiveChronology(); 2981 baseValue = chrono.date(baseDate).get(field); 2982 2983 // In case the Chronology is changed later, add a callback when/if it changes 2984 final long initialValue = value; 2985 context.addChronoChangedListener( 2986 (_unused) -> { 2987 /* Repeat the set of the field using the current Chronology 2988 * The success/error position is ignored because the value is 2989 * intentionally being overwritten. 2990 */ 2991 setValue(context, initialValue, errorPos, successPos); 2992 }); 2993 } 2994 int parseLen = successPos - errorPos; 2995 if (parseLen == minWidth && value >= 0) { 2996 long range = EXCEED_POINTS[minWidth]; 2997 long lastPart = baseValue % range; 2998 long basePart = baseValue - lastPart; 2999 if (baseValue > 0) { 3000 value = basePart + value; 3001 } else { 3002 value = basePart - value; 3003 } 3004 if (value < baseValue) { 3005 value += range; 3006 } 3007 } 3008 return context.setParsedField(field, value, errorPos, successPos); 3009 } 3010 3011 /** 3012 * Returns a new instance with fixed width flag set. 3013 * 3014 * @return a new updated printer-parser, not null 3015 */ 3016 @Override 3017 ReducedPrinterParser withFixedWidth() { 3018 if (subsequentWidth == -1) { 3019 return this; 3020 } 3021 return new ReducedPrinterParser(field, minWidth, maxWidth, baseValue, baseDate, -1); 3022 } 3023 3024 /** 3025 * Returns a new instance with an updated subsequent width. 3026 * 3027 * @param subsequentWidth the width of subsequent non-negative numbers, 0 or greater 3028 * @return a new updated printer-parser, not null 3029 */ 3030 @Override 3031 ReducedPrinterParser withSubsequentWidth(int subsequentWidth) { 3032 return new ReducedPrinterParser(field, minWidth, maxWidth, baseValue, baseDate, 3033 this.subsequentWidth + subsequentWidth); 3034 } 3035 3036 /** 3037 * For a ReducedPrinterParser, fixed width is false if the mode is strict, 3038 * otherwise it is set as for NumberPrinterParser. 3039 * @param context the context 3040 * @return if the field is fixed width 3041 * @see DateTimeFormatterBuilder#appendValueReduced(java.time.temporal.TemporalField, int, int, int) 3042 */ 3043 @Override 3044 boolean isFixedWidth(DateTimeParseContext context) { 3045 if (context.isStrict() == false) { 3046 return false; 3047 } 3048 return super.isFixedWidth(context); 3049 } 3050 3051 @Override 3052 public String toString() { 3053 return "ReducedValue(" + field + "," + minWidth + "," + maxWidth + 3054 "," + Objects.requireNonNullElse(baseDate, baseValue) + ")"; 3055 } 3056 } 3057 3058 //----------------------------------------------------------------------- 3059 /** 3060 * Prints and parses a numeric date-time field with optional padding. 3061 */ 3062 static final class FractionPrinterParser extends NumberPrinterParser { 3063 private final boolean decimalPoint; 3064 3065 /** 3066 * Constructor. 3067 * 3068 * @param field the field to output, not null 3069 * @param minWidth the minimum width to output, from 0 to 9 3070 * @param maxWidth the maximum width to output, from 0 to 9 3071 * @param decimalPoint whether to output the localized decimal point symbol 3072 */ 3073 FractionPrinterParser(TemporalField field, int minWidth, int maxWidth, boolean decimalPoint) { 3074 this(field, minWidth, maxWidth, decimalPoint, 0); 3075 Objects.requireNonNull(field, "field"); 3076 if (field.range().isFixed() == false) { 3077 throw new IllegalArgumentException("Field must have a fixed set of values: " + field); 3078 } 3079 if (minWidth < 0 || minWidth > 9) { 3080 throw new IllegalArgumentException("Minimum width must be from 0 to 9 inclusive but was " + minWidth); 3081 } 3082 if (maxWidth < 1 || maxWidth > 9) { 3083 throw new IllegalArgumentException("Maximum width must be from 1 to 9 inclusive but was " + maxWidth); 3084 } 3085 if (maxWidth < minWidth) { 3086 throw new IllegalArgumentException("Maximum width must exceed or equal the minimum width but " + 3087 maxWidth + " < " + minWidth); 3088 } 3089 } 3090 3091 /** 3092 * Constructor. 3093 * 3094 * @param field the field to output, not null 3095 * @param minWidth the minimum width to output, from 0 to 9 3096 * @param maxWidth the maximum width to output, from 0 to 9 3097 * @param decimalPoint whether to output the localized decimal point symbol 3098 * @param subsequentWidth the subsequentWidth for this instance 3099 */ 3100 FractionPrinterParser(TemporalField field, int minWidth, int maxWidth, boolean decimalPoint, int subsequentWidth) { 3101 super(field, minWidth, maxWidth, SignStyle.NOT_NEGATIVE, subsequentWidth); 3102 this.decimalPoint = decimalPoint; 3103 } 3104 3105 /** 3106 * Returns a new instance with fixed width flag set. 3107 * 3108 * @return a new updated printer-parser, not null 3109 */ 3110 @Override 3111 FractionPrinterParser withFixedWidth() { 3112 if (subsequentWidth == -1) { 3113 return this; 3114 } 3115 return new FractionPrinterParser(field, minWidth, maxWidth, decimalPoint, -1); 3116 } 3117 3118 /** 3119 * Returns a new instance with an updated subsequent width. 3120 * 3121 * @param subsequentWidth the width of subsequent non-negative numbers, 0 or greater 3122 * @return a new updated printer-parser, not null 3123 */ 3124 @Override 3125 FractionPrinterParser withSubsequentWidth(int subsequentWidth) { 3126 return new FractionPrinterParser(field, minWidth, maxWidth, decimalPoint, this.subsequentWidth + subsequentWidth); 3127 } 3128 3129 /** 3130 * For FractionPrinterPrinterParser, the width is fixed if context is sttrict, 3131 * minWidth equal to maxWidth and decimalpoint is absent. 3132 * @param context the context 3133 * @return if the field is fixed width 3134 * @see DateTimeFormatterBuilder#appendValueFraction(java.time.temporal.TemporalField, int, int, boolean) 3135 */ 3136 @Override 3137 boolean isFixedWidth(DateTimeParseContext context) { 3138 if (context.isStrict() && minWidth == maxWidth && decimalPoint == false) { 3139 return true; 3140 } 3141 return false; 3142 } 3143 3144 @Override 3145 public boolean format(DateTimePrintContext context, StringBuilder buf) { 3146 Long value = context.getValue(field); 3147 if (value == null) { 3148 return false; 3149 } 3150 DecimalStyle decimalStyle = context.getDecimalStyle(); 3151 BigDecimal fraction = convertToFraction(value); 3152 if (fraction.scale() == 0) { // scale is zero if value is zero 3153 if (minWidth > 0) { 3154 if (decimalPoint) { 3155 buf.append(decimalStyle.getDecimalSeparator()); 3156 } 3157 for (int i = 0; i < minWidth; i++) { 3158 buf.append(decimalStyle.getZeroDigit()); 3159 } 3160 } 3161 } else { 3162 int outputScale = Math.min(Math.max(fraction.scale(), minWidth), maxWidth); 3163 fraction = fraction.setScale(outputScale, RoundingMode.FLOOR); 3164 String str = fraction.toPlainString().substring(2); 3165 str = decimalStyle.convertNumberToI18N(str); 3166 if (decimalPoint) { 3167 buf.append(decimalStyle.getDecimalSeparator()); 3168 } 3169 buf.append(str); 3170 } 3171 return true; 3172 } 3173 3174 @Override 3175 public int parse(DateTimeParseContext context, CharSequence text, int position) { 3176 int effectiveMin = (context.isStrict() || isFixedWidth(context) ? minWidth : 0); 3177 int effectiveMax = (context.isStrict() || isFixedWidth(context) ? maxWidth : 9); 3178 int length = text.length(); 3179 if (position == length) { 3180 // valid if whole field is optional, invalid if minimum width 3181 return (effectiveMin > 0 ? ~position : position); 3182 } 3183 if (decimalPoint) { 3184 if (text.charAt(position) != context.getDecimalStyle().getDecimalSeparator()) { 3185 // valid if whole field is optional, invalid if minimum width 3186 return (effectiveMin > 0 ? ~position : position); 3187 } 3188 position++; 3189 } 3190 int minEndPos = position + effectiveMin; 3191 if (minEndPos > length) { 3192 return ~position; // need at least min width digits 3193 } 3194 int maxEndPos = Math.min(position + effectiveMax, length); 3195 int total = 0; // can use int because we are only parsing up to 9 digits 3196 int pos = position; 3197 while (pos < maxEndPos) { 3198 char ch = text.charAt(pos++); 3199 int digit = context.getDecimalStyle().convertToDigit(ch); 3200 if (digit < 0) { 3201 if (pos < minEndPos) { 3202 return ~position; // need at least min width digits 3203 } 3204 pos--; 3205 break; 3206 } 3207 total = total * 10 + digit; 3208 } 3209 BigDecimal fraction = new BigDecimal(total).movePointLeft(pos - position); 3210 long value = convertFromFraction(fraction); 3211 return context.setParsedField(field, value, position, pos); 3212 } 3213 3214 /** 3215 * Converts a value for this field to a fraction between 0 and 1. 3216 * <p> 3217 * The fractional value is between 0 (inclusive) and 1 (exclusive). 3218 * It can only be returned if the {@link java.time.temporal.TemporalField#range() value range} is fixed. 3219 * The fraction is obtained by calculation from the field range using 9 decimal 3220 * places and a rounding mode of {@link RoundingMode#FLOOR FLOOR}. 3221 * The calculation is inaccurate if the values do not run continuously from smallest to largest. 3222 * <p> 3223 * For example, the second-of-minute value of 15 would be returned as 0.25, 3224 * assuming the standard definition of 60 seconds in a minute. 3225 * 3226 * @param value the value to convert, must be valid for this rule 3227 * @return the value as a fraction within the range, from 0 to 1, not null 3228 * @throws DateTimeException if the value cannot be converted to a fraction 3229 */ 3230 private BigDecimal convertToFraction(long value) { 3231 ValueRange range = field.range(); 3232 range.checkValidValue(value, field); 3233 BigDecimal minBD = BigDecimal.valueOf(range.getMinimum()); 3234 BigDecimal rangeBD = BigDecimal.valueOf(range.getMaximum()).subtract(minBD).add(BigDecimal.ONE); 3235 BigDecimal valueBD = BigDecimal.valueOf(value).subtract(minBD); 3236 BigDecimal fraction = valueBD.divide(rangeBD, 9, RoundingMode.FLOOR); 3237 // stripTrailingZeros bug 3238 return fraction.compareTo(BigDecimal.ZERO) == 0 ? BigDecimal.ZERO : fraction.stripTrailingZeros(); 3239 } 3240 3241 /** 3242 * Converts a fraction from 0 to 1 for this field to a value. 3243 * <p> 3244 * The fractional value must be between 0 (inclusive) and 1 (exclusive). 3245 * It can only be returned if the {@link java.time.temporal.TemporalField#range() value range} is fixed. 3246 * The value is obtained by calculation from the field range and a rounding 3247 * mode of {@link RoundingMode#FLOOR FLOOR}. 3248 * The calculation is inaccurate if the values do not run continuously from smallest to largest. 3249 * <p> 3250 * For example, the fractional second-of-minute of 0.25 would be converted to 15, 3251 * assuming the standard definition of 60 seconds in a minute. 3252 * 3253 * @param fraction the fraction to convert, not null 3254 * @return the value of the field, valid for this rule 3255 * @throws DateTimeException if the value cannot be converted 3256 */ 3257 private long convertFromFraction(BigDecimal fraction) { 3258 ValueRange range = field.range(); 3259 BigDecimal minBD = BigDecimal.valueOf(range.getMinimum()); 3260 BigDecimal rangeBD = BigDecimal.valueOf(range.getMaximum()).subtract(minBD).add(BigDecimal.ONE); 3261 BigDecimal valueBD = fraction.multiply(rangeBD).setScale(0, RoundingMode.FLOOR).add(minBD); 3262 return valueBD.longValueExact(); 3263 } 3264 3265 @Override 3266 public String toString() { 3267 String decimal = (decimalPoint ? ",DecimalPoint" : ""); 3268 return "Fraction(" + field + "," + minWidth + "," + maxWidth + decimal + ")"; 3269 } 3270 } 3271 3272 //----------------------------------------------------------------------- 3273 /** 3274 * Prints or parses field text. 3275 */ 3276 static final class TextPrinterParser implements DateTimePrinterParser { 3277 private final TemporalField field; 3278 private final TextStyle textStyle; 3279 private final DateTimeTextProvider provider; 3280 /** 3281 * The cached number printer parser. 3282 * Immutable and volatile, so no synchronization needed. 3283 */ 3284 private volatile NumberPrinterParser numberPrinterParser; 3285 3286 /** 3287 * Constructor. 3288 * 3289 * @param field the field to output, not null 3290 * @param textStyle the text style, not null 3291 * @param provider the text provider, not null 3292 */ 3293 TextPrinterParser(TemporalField field, TextStyle textStyle, DateTimeTextProvider provider) { 3294 // validated by caller 3295 this.field = field; 3296 this.textStyle = textStyle; 3297 this.provider = provider; 3298 } 3299 3300 @Override 3301 public boolean format(DateTimePrintContext context, StringBuilder buf) { 3302 Long value = context.getValue(field); 3303 if (value == null) { 3304 return false; 3305 } 3306 String text; 3307 Chronology chrono = context.getTemporal().query(TemporalQueries.chronology()); 3308 if (chrono == null || chrono == IsoChronology.INSTANCE) { 3309 text = provider.getText(field, value, textStyle, context.getLocale()); 3310 } else { 3311 text = provider.getText(chrono, field, value, textStyle, context.getLocale()); 3312 } 3313 if (text == null) { 3314 return numberPrinterParser().format(context, buf); 3315 } 3316 buf.append(text); 3317 return true; 3318 } 3319 3320 @Override 3321 public int parse(DateTimeParseContext context, CharSequence parseText, int position) { 3322 int length = parseText.length(); 3323 if (position < 0 || position > length) { 3324 throw new IndexOutOfBoundsException(); 3325 } 3326 TextStyle style = (context.isStrict() ? textStyle : null); 3327 Chronology chrono = context.getEffectiveChronology(); 3328 Iterator<Entry<String, Long>> it; 3329 if (chrono == null || chrono == IsoChronology.INSTANCE) { 3330 it = provider.getTextIterator(field, style, context.getLocale()); 3331 } else { 3332 it = provider.getTextIterator(chrono, field, style, context.getLocale()); 3333 } 3334 if (it != null) { 3335 while (it.hasNext()) { 3336 Entry<String, Long> entry = it.next(); 3337 String itText = entry.getKey(); 3338 if (context.subSequenceEquals(itText, 0, parseText, position, itText.length())) { 3339 return context.setParsedField(field, entry.getValue(), position, position + itText.length()); 3340 } 3341 } 3342 if (field == ERA && !context.isStrict()) { 3343 // parse the possible era name from era.toString() 3344 List<Era> eras = chrono.eras(); 3345 for (Era era : eras) { 3346 String name = era.toString(); 3347 if (context.subSequenceEquals(name, 0, parseText, position, name.length())) { 3348 return context.setParsedField(field, era.getValue(), position, position + name.length()); 3349 } 3350 } 3351 } 3352 if (context.isStrict()) { 3353 return ~position; 3354 } 3355 } 3356 return numberPrinterParser().parse(context, parseText, position); 3357 } 3358 3359 /** 3360 * Create and cache a number printer parser. 3361 * @return the number printer parser for this field, not null 3362 */ 3363 private NumberPrinterParser numberPrinterParser() { 3364 if (numberPrinterParser == null) { 3365 numberPrinterParser = new NumberPrinterParser(field, 1, 19, SignStyle.NORMAL); 3366 } 3367 return numberPrinterParser; 3368 } 3369 3370 @Override 3371 public String toString() { 3372 if (textStyle == TextStyle.FULL) { 3373 return "Text(" + field + ")"; 3374 } 3375 return "Text(" + field + "," + textStyle + ")"; 3376 } 3377 } 3378 3379 //----------------------------------------------------------------------- 3380 /** 3381 * Prints or parses an ISO-8601 instant. 3382 */ 3383 static final class InstantPrinterParser implements DateTimePrinterParser { 3384 // days in a 400 year cycle = 146097 3385 // days in a 10,000 year cycle = 146097 * 25 3386 // seconds per day = 86400 3387 private static final long SECONDS_PER_10000_YEARS = 146097L * 25L * 86400L; 3388 private static final long SECONDS_0000_TO_1970 = ((146097L * 5L) - (30L * 365L + 7L)) * 86400L; 3389 private final int fractionalDigits; 3390 3391 InstantPrinterParser(int fractionalDigits) { 3392 this.fractionalDigits = fractionalDigits; 3393 } 3394 3395 @Override 3396 public boolean format(DateTimePrintContext context, StringBuilder buf) { 3397 // use INSTANT_SECONDS, thus this code is not bound by Instant.MAX 3398 Long inSecs = context.getValue(INSTANT_SECONDS); 3399 Long inNanos = null; 3400 if (context.getTemporal().isSupported(NANO_OF_SECOND)) { 3401 inNanos = context.getTemporal().getLong(NANO_OF_SECOND); 3402 } 3403 if (inSecs == null) { 3404 return false; 3405 } 3406 long inSec = inSecs; 3407 int inNano = NANO_OF_SECOND.checkValidIntValue(inNanos != null ? inNanos : 0); 3408 // format mostly using LocalDateTime.toString 3409 if (inSec >= -SECONDS_0000_TO_1970) { 3410 // current era 3411 long zeroSecs = inSec - SECONDS_PER_10000_YEARS + SECONDS_0000_TO_1970; 3412 long hi = Math.floorDiv(zeroSecs, SECONDS_PER_10000_YEARS) + 1; 3413 long lo = Math.floorMod(zeroSecs, SECONDS_PER_10000_YEARS); 3414 LocalDateTime ldt = LocalDateTime.ofEpochSecond(lo - SECONDS_0000_TO_1970, 0, ZoneOffset.UTC); 3415 if (hi > 0) { 3416 buf.append('+').append(hi); 3417 } 3418 buf.append(ldt); 3419 if (ldt.getSecond() == 0) { 3420 buf.append(":00"); 3421 } 3422 } else { 3423 // before current era 3424 long zeroSecs = inSec + SECONDS_0000_TO_1970; 3425 long hi = zeroSecs / SECONDS_PER_10000_YEARS; 3426 long lo = zeroSecs % SECONDS_PER_10000_YEARS; 3427 LocalDateTime ldt = LocalDateTime.ofEpochSecond(lo - SECONDS_0000_TO_1970, 0, ZoneOffset.UTC); 3428 int pos = buf.length(); 3429 buf.append(ldt); 3430 if (ldt.getSecond() == 0) { 3431 buf.append(":00"); 3432 } 3433 if (hi < 0) { 3434 if (ldt.getYear() == -10_000) { 3435 buf.replace(pos, pos + 2, Long.toString(hi - 1)); 3436 } else if (lo == 0) { 3437 buf.insert(pos, hi); 3438 } else { 3439 buf.insert(pos + 1, Math.abs(hi)); 3440 } 3441 } 3442 } 3443 // add fraction 3444 if ((fractionalDigits < 0 && inNano > 0) || fractionalDigits > 0) { 3445 buf.append('.'); 3446 int div = 100_000_000; 3447 for (int i = 0; ((fractionalDigits == -1 && inNano > 0) || 3448 (fractionalDigits == -2 && (inNano > 0 || (i % 3) != 0)) || 3449 i < fractionalDigits); i++) { 3450 int digit = inNano / div; 3451 buf.append((char) (digit + '0')); 3452 inNano = inNano - (digit * div); 3453 div = div / 10; 3454 } 3455 } 3456 buf.append('Z'); 3457 return true; 3458 } 3459 3460 @Override 3461 public int parse(DateTimeParseContext context, CharSequence text, int position) { 3462 // new context to avoid overwriting fields like year/month/day 3463 int minDigits = (fractionalDigits < 0 ? 0 : fractionalDigits); 3464 int maxDigits = (fractionalDigits < 0 ? 9 : fractionalDigits); 3465 CompositePrinterParser parser = new DateTimeFormatterBuilder() 3466 .append(DateTimeFormatter.ISO_LOCAL_DATE).appendLiteral('T') 3467 .appendValue(HOUR_OF_DAY, 2).appendLiteral(':') 3468 .appendValue(MINUTE_OF_HOUR, 2).appendLiteral(':') 3469 .appendValue(SECOND_OF_MINUTE, 2) 3470 .appendFraction(NANO_OF_SECOND, minDigits, maxDigits, true) 3471 .appendLiteral('Z') 3472 .toFormatter().toPrinterParser(false); 3473 DateTimeParseContext newContext = context.copy(); 3474 int pos = parser.parse(newContext, text, position); 3475 if (pos < 0) { 3476 return pos; 3477 } 3478 // parser restricts most fields to 2 digits, so definitely int 3479 // correctly parsed nano is also guaranteed to be valid 3480 long yearParsed = newContext.getParsed(YEAR); 3481 int month = newContext.getParsed(MONTH_OF_YEAR).intValue(); 3482 int day = newContext.getParsed(DAY_OF_MONTH).intValue(); 3483 int hour = newContext.getParsed(HOUR_OF_DAY).intValue(); 3484 int min = newContext.getParsed(MINUTE_OF_HOUR).intValue(); 3485 Long secVal = newContext.getParsed(SECOND_OF_MINUTE); 3486 Long nanoVal = newContext.getParsed(NANO_OF_SECOND); 3487 int sec = (secVal != null ? secVal.intValue() : 0); 3488 int nano = (nanoVal != null ? nanoVal.intValue() : 0); 3489 int days = 0; 3490 if (hour == 24 && min == 0 && sec == 0 && nano == 0) { 3491 hour = 0; 3492 days = 1; 3493 } else if (hour == 23 && min == 59 && sec == 60) { 3494 context.setParsedLeapSecond(); 3495 sec = 59; 3496 } 3497 int year = (int) yearParsed % 10_000; 3498 long instantSecs; 3499 try { 3500 LocalDateTime ldt = LocalDateTime.of(year, month, day, hour, min, sec, 0).plusDays(days); 3501 instantSecs = ldt.toEpochSecond(ZoneOffset.UTC); 3502 instantSecs += Math.multiplyExact(yearParsed / 10_000L, SECONDS_PER_10000_YEARS); 3503 } catch (RuntimeException ex) { 3504 return ~position; 3505 } 3506 int successPos = pos; 3507 successPos = context.setParsedField(INSTANT_SECONDS, instantSecs, position, successPos); 3508 return context.setParsedField(NANO_OF_SECOND, nano, position, successPos); 3509 } 3510 3511 @Override 3512 public String toString() { 3513 return "Instant()"; 3514 } 3515 } 3516 3517 //----------------------------------------------------------------------- 3518 /** 3519 * Prints or parses an offset ID. 3520 */ 3521 static final class OffsetIdPrinterParser implements DateTimePrinterParser { 3522 static final String[] PATTERNS = new String[] { 3523 "+HH", "+HHmm", "+HH:mm", "+HHMM", "+HH:MM", "+HHMMss", "+HH:MM:ss", "+HHMMSS", "+HH:MM:SS", "+HHmmss", "+HH:mm:ss", 3524 "+H", "+Hmm", "+H:mm", "+HMM", "+H:MM", "+HMMss", "+H:MM:ss", "+HMMSS", "+H:MM:SS", "+Hmmss", "+H:mm:ss", 3525 }; // order used in pattern builder 3526 static final OffsetIdPrinterParser INSTANCE_ID_Z = new OffsetIdPrinterParser("+HH:MM:ss", "Z"); 3527 static final OffsetIdPrinterParser INSTANCE_ID_ZERO = new OffsetIdPrinterParser("+HH:MM:ss", "0"); 3528 3529 private final String noOffsetText; 3530 private final int type; 3531 private final int style; 3532 3533 /** 3534 * Constructor. 3535 * 3536 * @param pattern the pattern 3537 * @param noOffsetText the text to use for UTC, not null 3538 */ 3539 OffsetIdPrinterParser(String pattern, String noOffsetText) { 3540 Objects.requireNonNull(pattern, "pattern"); 3541 Objects.requireNonNull(noOffsetText, "noOffsetText"); 3542 this.type = checkPattern(pattern); 3543 this.style = type % 11; 3544 this.noOffsetText = noOffsetText; 3545 } 3546 3547 private int checkPattern(String pattern) { 3548 for (int i = 0; i < PATTERNS.length; i++) { 3549 if (PATTERNS[i].equals(pattern)) { 3550 return i; 3551 } 3552 } 3553 throw new IllegalArgumentException("Invalid zone offset pattern: " + pattern); 3554 } 3555 3556 private boolean isPaddedHour() { 3557 return type < 11; 3558 } 3559 3560 private boolean isColon() { 3561 return style > 0 && (style % 2) == 0; 3562 } 3563 3564 @Override 3565 public boolean format(DateTimePrintContext context, StringBuilder buf) { 3566 Long offsetSecs = context.getValue(OFFSET_SECONDS); 3567 if (offsetSecs == null) { 3568 return false; 3569 } 3570 int totalSecs = Math.toIntExact(offsetSecs); 3571 if (totalSecs == 0) { 3572 buf.append(noOffsetText); 3573 } else { 3574 int absHours = Math.abs((totalSecs / 3600) % 100); // anything larger than 99 silently dropped 3575 int absMinutes = Math.abs((totalSecs / 60) % 60); 3576 int absSeconds = Math.abs(totalSecs % 60); 3577 int bufPos = buf.length(); 3578 int output = absHours; 3579 buf.append(totalSecs < 0 ? "-" : "+"); 3580 if (isPaddedHour() || absHours >= 10) { 3581 formatZeroPad(false, absHours, buf); 3582 } else { 3583 buf.append((char) (absHours + '0')); 3584 } 3585 if ((style >= 3 && style <= 8) || (style >= 9 && absSeconds > 0) || (style >= 1 && absMinutes > 0)) { 3586 formatZeroPad(isColon(), absMinutes, buf); 3587 output += absMinutes; 3588 if (style == 7 || style == 8 || (style >= 5 && absSeconds > 0)) { 3589 formatZeroPad(isColon(), absSeconds, buf); 3590 output += absSeconds; 3591 } 3592 } 3593 if (output == 0) { 3594 buf.setLength(bufPos); 3595 buf.append(noOffsetText); 3596 } 3597 } 3598 return true; 3599 } 3600 3601 private void formatZeroPad(boolean colon, int value, StringBuilder buf) { 3602 buf.append(colon ? ":" : "") 3603 .append((char) (value / 10 + '0')) 3604 .append((char) (value % 10 + '0')); 3605 } 3606 3607 @Override 3608 public int parse(DateTimeParseContext context, CharSequence text, int position) { 3609 int length = text.length(); 3610 int noOffsetLen = noOffsetText.length(); 3611 if (noOffsetLen == 0) { 3612 if (position == length) { 3613 return context.setParsedField(OFFSET_SECONDS, 0, position, position); 3614 } 3615 } else { 3616 if (position == length) { 3617 return ~position; 3618 } 3619 if (context.subSequenceEquals(text, position, noOffsetText, 0, noOffsetLen)) { 3620 return context.setParsedField(OFFSET_SECONDS, 0, position, position + noOffsetLen); 3621 } 3622 } 3623 3624 // parse normal plus/minus offset 3625 char sign = text.charAt(position); // IOOBE if invalid position 3626 if (sign == '+' || sign == '-') { 3627 // starts 3628 int negative = (sign == '-' ? -1 : 1); 3629 boolean isColon = isColon(); 3630 boolean paddedHour = isPaddedHour(); 3631 int[] array = new int[4]; 3632 array[0] = position + 1; 3633 int parseType = type; 3634 // select parse type when lenient 3635 if (!context.isStrict()) { 3636 if (paddedHour) { 3637 if (isColon || (parseType == 0 && length > position + 3 && text.charAt(position + 3) == ':')) { 3638 isColon = true; // needed in cases like ("+HH", "+01:01") 3639 parseType = 10; 3640 } else { 3641 parseType = 9; 3642 } 3643 } else { 3644 if (isColon || (parseType == 11 && length > position + 3 && (text.charAt(position + 2) == ':' || text.charAt(position + 3) == ':'))) { 3645 isColon = true; 3646 parseType = 21; // needed in cases like ("+H", "+1:01") 3647 } else { 3648 parseType = 20; 3649 } 3650 } 3651 } 3652 // parse according to the selected pattern 3653 switch (parseType) { 3654 case 0: // +HH 3655 case 11: // +H 3656 parseHour(text, paddedHour, array); 3657 break; 3658 case 1: // +HHmm 3659 case 2: // +HH:mm 3660 case 13: // +H:mm 3661 parseHour(text, paddedHour, array); 3662 parseMinute(text, isColon, false, array); 3663 break; 3664 case 3: // +HHMM 3665 case 4: // +HH:MM 3666 case 15: // +H:MM 3667 parseHour(text, paddedHour, array); 3668 parseMinute(text, isColon, true, array); 3669 break; 3670 case 5: // +HHMMss 3671 case 6: // +HH:MM:ss 3672 case 17: // +H:MM:ss 3673 parseHour(text, paddedHour, array); 3674 parseMinute(text, isColon, true, array); 3675 parseSecond(text, isColon, false, array); 3676 break; 3677 case 7: // +HHMMSS 3678 case 8: // +HH:MM:SS 3679 case 19: // +H:MM:SS 3680 parseHour(text, paddedHour, array); 3681 parseMinute(text, isColon, true, array); 3682 parseSecond(text, isColon, true, array); 3683 break; 3684 case 9: // +HHmmss 3685 case 10: // +HH:mm:ss 3686 case 21: // +H:mm:ss 3687 parseHour(text, paddedHour, array); 3688 parseOptionalMinuteSecond(text, isColon, array); 3689 break; 3690 case 12: // +Hmm 3691 parseVariableWidthDigits(text, 1, 4, array); 3692 break; 3693 case 14: // +HMM 3694 parseVariableWidthDigits(text, 3, 4, array); 3695 break; 3696 case 16: // +HMMss 3697 parseVariableWidthDigits(text, 3, 6, array); 3698 break; 3699 case 18: // +HMMSS 3700 parseVariableWidthDigits(text, 5, 6, array); 3701 break; 3702 case 20: // +Hmmss 3703 parseVariableWidthDigits(text, 1, 6, array); 3704 break; 3705 } 3706 if (array[0] > 0) { 3707 if (array[1] > 23 || array[2] > 59 || array[3] > 59) { 3708 throw new DateTimeException("Value out of range: Hour[0-23], Minute[0-59], Second[0-59]"); 3709 } 3710 long offsetSecs = negative * (array[1] * 3600L + array[2] * 60L + array[3]); 3711 return context.setParsedField(OFFSET_SECONDS, offsetSecs, position, array[0]); 3712 } 3713 } 3714 // handle special case of empty no offset text 3715 if (noOffsetLen == 0) { 3716 return context.setParsedField(OFFSET_SECONDS, 0, position, position); 3717 } 3718 return ~position; 3719 } 3720 3721 private void parseHour(CharSequence parseText, boolean paddedHour, int[] array) { 3722 if (paddedHour) { 3723 // parse two digits 3724 if (!parseDigits(parseText, false, 1, array)) { 3725 array[0] = ~array[0]; 3726 } 3727 } else { 3728 // parse one or two digits 3729 parseVariableWidthDigits(parseText, 1, 2, array); 3730 } 3731 } 3732 3733 private void parseMinute(CharSequence parseText, boolean isColon, boolean mandatory, int[] array) { 3734 if (!parseDigits(parseText, isColon, 2, array)) { 3735 if (mandatory) { 3736 array[0] = ~array[0]; 3737 } 3738 } 3739 } 3740 3741 private void parseSecond(CharSequence parseText, boolean isColon, boolean mandatory, int[] array) { 3742 if (!parseDigits(parseText, isColon, 3, array)) { 3743 if (mandatory) { 3744 array[0] = ~array[0]; 3745 } 3746 } 3747 } 3748 3749 private void parseOptionalMinuteSecond(CharSequence parseText, boolean isColon, int[] array) { 3750 if (parseDigits(parseText, isColon, 2, array)) { 3751 parseDigits(parseText, isColon, 3, array); 3752 } 3753 } 3754 3755 private boolean parseDigits(CharSequence parseText, boolean isColon, int arrayIndex, int[] array) { 3756 int pos = array[0]; 3757 if (pos < 0) { 3758 return true; 3759 } 3760 if (isColon && arrayIndex != 1) { // ':' will precede only in case of minute/second 3761 if (pos + 1 > parseText.length() || parseText.charAt(pos) != ':') { 3762 return false; 3763 } 3764 pos++; 3765 } 3766 if (pos + 2 > parseText.length()) { 3767 return false; 3768 } 3769 char ch1 = parseText.charAt(pos++); 3770 char ch2 = parseText.charAt(pos++); 3771 if (ch1 < '0' || ch1 > '9' || ch2 < '0' || ch2 > '9') { 3772 return false; 3773 } 3774 int value = (ch1 - 48) * 10 + (ch2 - 48); 3775 if (value < 0 || value > 59) { 3776 return false; 3777 } 3778 array[arrayIndex] = value; 3779 array[0] = pos; 3780 return true; 3781 } 3782 3783 private void parseVariableWidthDigits(CharSequence parseText, int minDigits, int maxDigits, int[] array) { 3784 // scan the text to find the available number of digits up to maxDigits 3785 // so long as the number available is minDigits or more, the input is valid 3786 // then parse the number of available digits 3787 int pos = array[0]; 3788 int available = 0; 3789 char[] chars = new char[maxDigits]; 3790 for (int i = 0; i < maxDigits; i++) { 3791 if (pos + 1 > parseText.length()) { 3792 break; 3793 } 3794 char ch = parseText.charAt(pos++); 3795 if (ch < '0' || ch > '9') { 3796 pos--; 3797 break; 3798 } 3799 chars[i] = ch; 3800 available++; 3801 } 3802 if (available < minDigits) { 3803 array[0] = ~array[0]; 3804 return; 3805 } 3806 switch (available) { 3807 case 1: 3808 array[1] = (chars[0] - 48); 3809 break; 3810 case 2: 3811 array[1] = ((chars[0] - 48) * 10 + (chars[1] - 48)); 3812 break; 3813 case 3: 3814 array[1] = (chars[0] - 48); 3815 array[2] = ((chars[1] - 48) * 10 + (chars[2] - 48)); 3816 break; 3817 case 4: 3818 array[1] = ((chars[0] - 48) * 10 + (chars[1] - 48)); 3819 array[2] = ((chars[2] - 48) * 10 + (chars[3] - 48)); 3820 break; 3821 case 5: 3822 array[1] = (chars[0] - 48); 3823 array[2] = ((chars[1] - 48) * 10 + (chars[2] - 48)); 3824 array[3] = ((chars[3] - 48) * 10 + (chars[4] - 48)); 3825 break; 3826 case 6: 3827 array[1] = ((chars[0] - 48) * 10 + (chars[1] - 48)); 3828 array[2] = ((chars[2] - 48) * 10 + (chars[3] - 48)); 3829 array[3] = ((chars[4] - 48) * 10 + (chars[5] - 48)); 3830 break; 3831 } 3832 array[0] = pos; 3833 } 3834 3835 @Override 3836 public String toString() { 3837 String converted = noOffsetText.replace("'", "''"); 3838 return "Offset(" + PATTERNS[type] + ",'" + converted + "')"; 3839 } 3840 } 3841 3842 //----------------------------------------------------------------------- 3843 /** 3844 * Prints or parses an offset ID. 3845 */ 3846 static final class LocalizedOffsetIdPrinterParser implements DateTimePrinterParser { 3847 private final TextStyle style; 3848 3849 /** 3850 * Constructor. 3851 * 3852 * @param style the style, not null 3853 */ 3854 LocalizedOffsetIdPrinterParser(TextStyle style) { 3855 this.style = style; 3856 } 3857 3858 private static StringBuilder appendHMS(StringBuilder buf, int t) { 3859 return buf.append((char)(t / 10 + '0')) 3860 .append((char)(t % 10 + '0')); 3861 } 3862 3863 @Override 3864 public boolean format(DateTimePrintContext context, StringBuilder buf) { 3865 Long offsetSecs = context.getValue(OFFSET_SECONDS); 3866 if (offsetSecs == null) { 3867 return false; 3868 } 3869 String gmtText = "GMT"; // TODO: get localized version of 'GMT' 3870 buf.append(gmtText); 3871 int totalSecs = Math.toIntExact(offsetSecs); 3872 if (totalSecs != 0) { 3873 int absHours = Math.abs((totalSecs / 3600) % 100); // anything larger than 99 silently dropped 3874 int absMinutes = Math.abs((totalSecs / 60) % 60); 3875 int absSeconds = Math.abs(totalSecs % 60); 3876 buf.append(totalSecs < 0 ? "-" : "+"); 3877 if (style == TextStyle.FULL) { 3878 appendHMS(buf, absHours); 3879 buf.append(':'); 3880 appendHMS(buf, absMinutes); 3881 if (absSeconds != 0) { 3882 buf.append(':'); 3883 appendHMS(buf, absSeconds); 3884 } 3885 } else { 3886 if (absHours >= 10) { 3887 buf.append((char)(absHours / 10 + '0')); 3888 } 3889 buf.append((char)(absHours % 10 + '0')); 3890 if (absMinutes != 0 || absSeconds != 0) { 3891 buf.append(':'); 3892 appendHMS(buf, absMinutes); 3893 if (absSeconds != 0) { 3894 buf.append(':'); 3895 appendHMS(buf, absSeconds); 3896 } 3897 } 3898 } 3899 } 3900 return true; 3901 } 3902 3903 int getDigit(CharSequence text, int position) { 3904 char c = text.charAt(position); 3905 if (c < '0' || c > '9') { 3906 return -1; 3907 } 3908 return c - '0'; 3909 } 3910 3911 @Override 3912 public int parse(DateTimeParseContext context, CharSequence text, int position) { 3913 int pos = position; 3914 int end = text.length(); 3915 String gmtText = "GMT"; // TODO: get localized version of 'GMT' 3916 if (!context.subSequenceEquals(text, pos, gmtText, 0, gmtText.length())) { 3917 return ~position; 3918 } 3919 pos += gmtText.length(); 3920 // parse normal plus/minus offset 3921 int negative = 0; 3922 if (pos == end) { 3923 return context.setParsedField(OFFSET_SECONDS, 0, position, pos); 3924 } 3925 char sign = text.charAt(pos); // IOOBE if invalid position 3926 if (sign == '+') { 3927 negative = 1; 3928 } else if (sign == '-') { 3929 negative = -1; 3930 } else { 3931 return context.setParsedField(OFFSET_SECONDS, 0, position, pos); 3932 } 3933 pos++; 3934 int h = 0; 3935 int m = 0; 3936 int s = 0; 3937 if (style == TextStyle.FULL) { 3938 int h1 = getDigit(text, pos++); 3939 int h2 = getDigit(text, pos++); 3940 if (h1 < 0 || h2 < 0 || text.charAt(pos++) != ':') { 3941 return ~position; 3942 } 3943 h = h1 * 10 + h2; 3944 int m1 = getDigit(text, pos++); 3945 int m2 = getDigit(text, pos++); 3946 if (m1 < 0 || m2 < 0) { 3947 return ~position; 3948 } 3949 m = m1 * 10 + m2; 3950 if (pos + 2 < end && text.charAt(pos) == ':') { 3951 int s1 = getDigit(text, pos + 1); 3952 int s2 = getDigit(text, pos + 2); 3953 if (s1 >= 0 && s2 >= 0) { 3954 s = s1 * 10 + s2; 3955 pos += 3; 3956 } 3957 } 3958 } else { 3959 h = getDigit(text, pos++); 3960 if (h < 0) { 3961 return ~position; 3962 } 3963 if (pos < end) { 3964 int h2 = getDigit(text, pos); 3965 if (h2 >=0) { 3966 h = h * 10 + h2; 3967 pos++; 3968 } 3969 if (pos + 2 < end && text.charAt(pos) == ':') { 3970 if (pos + 2 < end && text.charAt(pos) == ':') { 3971 int m1 = getDigit(text, pos + 1); 3972 int m2 = getDigit(text, pos + 2); 3973 if (m1 >= 0 && m2 >= 0) { 3974 m = m1 * 10 + m2; 3975 pos += 3; 3976 if (pos + 2 < end && text.charAt(pos) == ':') { 3977 int s1 = getDigit(text, pos + 1); 3978 int s2 = getDigit(text, pos + 2); 3979 if (s1 >= 0 && s2 >= 0) { 3980 s = s1 * 10 + s2; 3981 pos += 3; 3982 } 3983 } 3984 } 3985 } 3986 } 3987 } 3988 } 3989 long offsetSecs = negative * (h * 3600L + m * 60L + s); 3990 return context.setParsedField(OFFSET_SECONDS, offsetSecs, position, pos); 3991 } 3992 3993 @Override 3994 public String toString() { 3995 return "LocalizedOffset(" + style + ")"; 3996 } 3997 } 3998 3999 //----------------------------------------------------------------------- 4000 /** 4001 * Prints or parses a zone ID. 4002 */ 4003 static final class ZoneTextPrinterParser extends ZoneIdPrinterParser { 4004 4005 /** The text style to output. */ 4006 private final TextStyle textStyle; 4007 4008 /** The preferred zoneid map */ 4009 private Set<String> preferredZones; 4010 4011 /** Display in generic time-zone format. True in case of pattern letter 'v' */ 4012 private final boolean isGeneric; 4013 ZoneTextPrinterParser(TextStyle textStyle, Set<ZoneId> preferredZones, boolean isGeneric) { 4014 super(TemporalQueries.zone(), "ZoneText(" + textStyle + ")"); 4015 this.textStyle = Objects.requireNonNull(textStyle, "textStyle"); 4016 this.isGeneric = isGeneric; 4017 if (preferredZones != null && preferredZones.size() != 0) { 4018 this.preferredZones = new HashSet<>(); 4019 for (ZoneId id : preferredZones) { 4020 this.preferredZones.add(id.getId()); 4021 } 4022 } 4023 } 4024 4025 private static final int STD = 0; 4026 private static final int DST = 1; 4027 private static final int GENERIC = 2; 4028 private static final Map<String, SoftReference<Map<Locale, String[]>>> cache = 4029 new ConcurrentHashMap<>(); 4030 4031 private String getDisplayName(String id, int type, Locale locale) { 4032 if (textStyle == TextStyle.NARROW) { 4033 return null; 4034 } 4035 String[] names; 4036 SoftReference<Map<Locale, String[]>> ref = cache.get(id); 4037 Map<Locale, String[]> perLocale = null; 4038 if (ref == null || (perLocale = ref.get()) == null || 4039 (names = perLocale.get(locale)) == null) { 4040 names = TimeZoneNameUtility.retrieveDisplayNames(id, locale); 4041 if (names == null) { 4042 return null; 4043 } 4044 names = Arrays.copyOfRange(names, 0, 7); 4045 names[5] = 4046 TimeZoneNameUtility.retrieveGenericDisplayName(id, TimeZone.LONG, locale); 4047 if (names[5] == null) { 4048 names[5] = names[0]; // use the id 4049 } 4050 names[6] = 4051 TimeZoneNameUtility.retrieveGenericDisplayName(id, TimeZone.SHORT, locale); 4052 if (names[6] == null) { 4053 names[6] = names[0]; 4054 } 4055 if (perLocale == null) { 4056 perLocale = new ConcurrentHashMap<>(); 4057 } 4058 perLocale.put(locale, names); 4059 cache.put(id, new SoftReference<>(perLocale)); 4060 } 4061 switch (type) { 4062 case STD: 4063 return names[textStyle.zoneNameStyleIndex() + 1]; 4064 case DST: 4065 return names[textStyle.zoneNameStyleIndex() + 3]; 4066 } 4067 return names[textStyle.zoneNameStyleIndex() + 5]; 4068 } 4069 4070 @Override 4071 public boolean format(DateTimePrintContext context, StringBuilder buf) { 4072 ZoneId zone = context.getValue(TemporalQueries.zoneId()); 4073 if (zone == null) { 4074 return false; 4075 } 4076 String zname = zone.getId(); 4077 if (!(zone instanceof ZoneOffset)) { 4078 TemporalAccessor dt = context.getTemporal(); 4079 int type = GENERIC; 4080 if (!isGeneric) { 4081 if (dt.isSupported(ChronoField.INSTANT_SECONDS)) { 4082 type = zone.getRules().isDaylightSavings(Instant.from(dt)) ? DST : STD; 4083 } else if (dt.isSupported(ChronoField.EPOCH_DAY) && 4084 dt.isSupported(ChronoField.NANO_OF_DAY)) { 4085 LocalDate date = LocalDate.ofEpochDay(dt.getLong(ChronoField.EPOCH_DAY)); 4086 LocalTime time = LocalTime.ofNanoOfDay(dt.getLong(ChronoField.NANO_OF_DAY)); 4087 LocalDateTime ldt = date.atTime(time); 4088 if (zone.getRules().getTransition(ldt) == null) { 4089 type = zone.getRules().isDaylightSavings(ldt.atZone(zone).toInstant()) ? DST : STD; 4090 } 4091 } 4092 } 4093 String name = getDisplayName(zname, type, context.getLocale()); 4094 if (name != null) { 4095 zname = name; 4096 } 4097 } 4098 buf.append(zname); 4099 return true; 4100 } 4101 4102 // cache per instance for now 4103 private final Map<Locale, Entry<Integer, SoftReference<PrefixTree>>> 4104 cachedTree = new HashMap<>(); 4105 private final Map<Locale, Entry<Integer, SoftReference<PrefixTree>>> 4106 cachedTreeCI = new HashMap<>(); 4107 4108 @Override 4109 protected PrefixTree getTree(DateTimeParseContext context) { 4110 if (textStyle == TextStyle.NARROW) { 4111 return super.getTree(context); 4112 } 4113 Locale locale = context.getLocale(); 4114 boolean isCaseSensitive = context.isCaseSensitive(); 4115 Set<String> regionIds = ZoneRulesProvider.getAvailableZoneIds(); 4116 int regionIdsSize = regionIds.size(); 4117 4118 Map<Locale, Entry<Integer, SoftReference<PrefixTree>>> cached = 4119 isCaseSensitive ? cachedTree : cachedTreeCI; 4120 4121 Entry<Integer, SoftReference<PrefixTree>> entry = null; 4122 PrefixTree tree = null; 4123 String[][] zoneStrings = null; 4124 if ((entry = cached.get(locale)) == null || 4125 (entry.getKey() != regionIdsSize || 4126 (tree = entry.getValue().get()) == null)) { 4127 tree = PrefixTree.newTree(context); 4128 zoneStrings = TimeZoneNameUtility.getZoneStrings(locale); 4129 for (String[] names : zoneStrings) { 4130 String zid = names[0]; 4131 if (!regionIds.contains(zid)) { 4132 continue; 4133 } 4134 tree.add(zid, zid); // don't convert zid -> metazone 4135 zid = ZoneName.toZid(zid, locale); 4136 int i = textStyle == TextStyle.FULL ? 1 : 2; 4137 for (; i < names.length; i += 2) { 4138 tree.add(names[i], zid); 4139 } 4140 } 4141 // if we have a set of preferred zones, need a copy and 4142 // add the preferred zones again to overwrite 4143 if (preferredZones != null) { 4144 for (String[] names : zoneStrings) { 4145 String zid = names[0]; 4146 if (!preferredZones.contains(zid) || !regionIds.contains(zid)) { 4147 continue; 4148 } 4149 int i = textStyle == TextStyle.FULL ? 1 : 2; 4150 for (; i < names.length; i += 2) { 4151 tree.add(names[i], zid); 4152 } 4153 } 4154 } 4155 cached.put(locale, new SimpleImmutableEntry<>(regionIdsSize, new SoftReference<>(tree))); 4156 } 4157 return tree; 4158 } 4159 } 4160 4161 //----------------------------------------------------------------------- 4162 /** 4163 * Prints or parses a zone ID. 4164 */ 4165 static class ZoneIdPrinterParser implements DateTimePrinterParser { 4166 private final TemporalQuery<ZoneId> query; 4167 private final String description; 4168 4169 ZoneIdPrinterParser(TemporalQuery<ZoneId> query, String description) { 4170 this.query = query; 4171 this.description = description; 4172 } 4173 4174 @Override 4175 public boolean format(DateTimePrintContext context, StringBuilder buf) { 4176 ZoneId zone = context.getValue(query); 4177 if (zone == null) { 4178 return false; 4179 } 4180 buf.append(zone.getId()); 4181 return true; 4182 } 4183 4184 /** 4185 * The cached tree to speed up parsing. 4186 */ 4187 private static volatile Entry<Integer, PrefixTree> cachedPrefixTree; 4188 private static volatile Entry<Integer, PrefixTree> cachedPrefixTreeCI; 4189 4190 protected PrefixTree getTree(DateTimeParseContext context) { 4191 // prepare parse tree 4192 Set<String> regionIds = ZoneRulesProvider.getAvailableZoneIds(); 4193 final int regionIdsSize = regionIds.size(); 4194 Entry<Integer, PrefixTree> cached = context.isCaseSensitive() 4195 ? cachedPrefixTree : cachedPrefixTreeCI; 4196 if (cached == null || cached.getKey() != regionIdsSize) { 4197 synchronized (this) { 4198 cached = context.isCaseSensitive() ? cachedPrefixTree : cachedPrefixTreeCI; 4199 if (cached == null || cached.getKey() != regionIdsSize) { 4200 cached = new SimpleImmutableEntry<>(regionIdsSize, PrefixTree.newTree(regionIds, context)); 4201 if (context.isCaseSensitive()) { 4202 cachedPrefixTree = cached; 4203 } else { 4204 cachedPrefixTreeCI = cached; 4205 } 4206 } 4207 } 4208 } 4209 return cached.getValue(); 4210 } 4211 4212 /** 4213 * This implementation looks for the longest matching string. 4214 * For example, parsing Etc/GMT-2 will return Etc/GMC-2 rather than just 4215 * Etc/GMC although both are valid. 4216 */ 4217 @Override 4218 public int parse(DateTimeParseContext context, CharSequence text, int position) { 4219 int length = text.length(); 4220 if (position > length) { 4221 throw new IndexOutOfBoundsException(); 4222 } 4223 if (position == length) { 4224 return ~position; 4225 } 4226 4227 // handle fixed time-zone IDs 4228 char nextChar = text.charAt(position); 4229 if (nextChar == '+' || nextChar == '-') { 4230 return parseOffsetBased(context, text, position, position, OffsetIdPrinterParser.INSTANCE_ID_Z); 4231 } else if (length >= position + 2) { 4232 char nextNextChar = text.charAt(position + 1); 4233 if (context.charEquals(nextChar, 'U') && context.charEquals(nextNextChar, 'T')) { 4234 if (length >= position + 3 && context.charEquals(text.charAt(position + 2), 'C')) { 4235 return parseOffsetBased(context, text, position, position + 3, OffsetIdPrinterParser.INSTANCE_ID_ZERO); 4236 } 4237 return parseOffsetBased(context, text, position, position + 2, OffsetIdPrinterParser.INSTANCE_ID_ZERO); 4238 } else if (context.charEquals(nextChar, 'G') && length >= position + 3 && 4239 context.charEquals(nextNextChar, 'M') && context.charEquals(text.charAt(position + 2), 'T')) { 4240 if (length >= position + 4 && context.charEquals(text.charAt(position + 3), '0')) { 4241 context.setParsed(ZoneId.of("GMT0")); 4242 return position + 4; 4243 } 4244 return parseOffsetBased(context, text, position, position + 3, OffsetIdPrinterParser.INSTANCE_ID_ZERO); 4245 } 4246 } 4247 4248 // parse 4249 PrefixTree tree = getTree(context); 4250 ParsePosition ppos = new ParsePosition(position); 4251 String parsedZoneId = tree.match(text, ppos); 4252 if (parsedZoneId == null) { 4253 if (context.charEquals(nextChar, 'Z')) { 4254 context.setParsed(ZoneOffset.UTC); 4255 return position + 1; 4256 } 4257 return ~position; 4258 } 4259 context.setParsed(ZoneId.of(parsedZoneId)); 4260 return ppos.getIndex(); 4261 } 4262 4263 /** 4264 * Parse an offset following a prefix and set the ZoneId if it is valid. 4265 * To matching the parsing of ZoneId.of the values are not normalized 4266 * to ZoneOffsets. 4267 * 4268 * @param context the parse context 4269 * @param text the input text 4270 * @param prefixPos start of the prefix 4271 * @param position start of text after the prefix 4272 * @param parser parser for the value after the prefix 4273 * @return the position after the parse 4274 */ 4275 private int parseOffsetBased(DateTimeParseContext context, CharSequence text, int prefixPos, int position, OffsetIdPrinterParser parser) { 4276 String prefix = text.subSequence(prefixPos, position).toString().toUpperCase(); 4277 if (position >= text.length()) { 4278 context.setParsed(ZoneId.of(prefix)); 4279 return position; 4280 } 4281 4282 // '0' or 'Z' after prefix is not part of a valid ZoneId; use bare prefix 4283 if (text.charAt(position) == '0' || 4284 context.charEquals(text.charAt(position), 'Z')) { 4285 context.setParsed(ZoneId.of(prefix)); 4286 return position; 4287 } 4288 4289 DateTimeParseContext newContext = context.copy(); 4290 int endPos = parser.parse(newContext, text, position); 4291 try { 4292 if (endPos < 0) { 4293 if (parser == OffsetIdPrinterParser.INSTANCE_ID_Z) { 4294 return ~prefixPos; 4295 } 4296 context.setParsed(ZoneId.of(prefix)); 4297 return position; 4298 } 4299 int offset = (int) newContext.getParsed(OFFSET_SECONDS).longValue(); 4300 ZoneOffset zoneOffset = ZoneOffset.ofTotalSeconds(offset); 4301 context.setParsed(ZoneId.ofOffset(prefix, zoneOffset)); 4302 return endPos; 4303 } catch (DateTimeException dte) { 4304 return ~prefixPos; 4305 } 4306 } 4307 4308 @Override 4309 public String toString() { 4310 return description; 4311 } 4312 } 4313 4314 //----------------------------------------------------------------------- 4315 /** 4316 * A String based prefix tree for parsing time-zone names. 4317 */ 4318 static class PrefixTree { 4319 protected String key; 4320 protected String value; 4321 protected char c0; // performance optimization to avoid the 4322 // boundary check cost of key.charat(0) 4323 protected PrefixTree child; 4324 protected PrefixTree sibling; 4325 4326 private PrefixTree(String k, String v, PrefixTree child) { 4327 this.key = k; 4328 this.value = v; 4329 this.child = child; 4330 if (k.isEmpty()) { 4331 c0 = 0xffff; 4332 } else { 4333 c0 = key.charAt(0); 4334 } 4335 } 4336 4337 /** 4338 * Creates a new prefix parsing tree based on parse context. 4339 * 4340 * @param context the parse context 4341 * @return the tree, not null 4342 */ 4343 public static PrefixTree newTree(DateTimeParseContext context) { 4344 //if (!context.isStrict()) { 4345 // return new LENIENT("", null, null); 4346 //} 4347 if (context.isCaseSensitive()) { 4348 return new PrefixTree("", null, null); 4349 } 4350 return new CI("", null, null); 4351 } 4352 4353 /** 4354 * Creates a new prefix parsing tree. 4355 * 4356 * @param keys a set of strings to build the prefix parsing tree, not null 4357 * @param context the parse context 4358 * @return the tree, not null 4359 */ 4360 public static PrefixTree newTree(Set<String> keys, DateTimeParseContext context) { 4361 PrefixTree tree = newTree(context); 4362 for (String k : keys) { 4363 tree.add0(k, k); 4364 } 4365 return tree; 4366 } 4367 4368 /** 4369 * Clone a copy of this tree 4370 */ 4371 public PrefixTree copyTree() { 4372 PrefixTree copy = new PrefixTree(key, value, null); 4373 if (child != null) { 4374 copy.child = child.copyTree(); 4375 } 4376 if (sibling != null) { 4377 copy.sibling = sibling.copyTree(); 4378 } 4379 return copy; 4380 } 4381 4382 4383 /** 4384 * Adds a pair of {key, value} into the prefix tree. 4385 * 4386 * @param k the key, not null 4387 * @param v the value, not null 4388 * @return true if the pair is added successfully 4389 */ 4390 public boolean add(String k, String v) { 4391 return add0(k, v); 4392 } 4393 4394 private boolean add0(String k, String v) { 4395 k = toKey(k); 4396 int prefixLen = prefixLength(k); 4397 if (prefixLen == key.length()) { 4398 if (prefixLen < k.length()) { // down the tree 4399 String subKey = k.substring(prefixLen); 4400 PrefixTree c = child; 4401 while (c != null) { 4402 if (isEqual(c.c0, subKey.charAt(0))) { 4403 return c.add0(subKey, v); 4404 } 4405 c = c.sibling; 4406 } 4407 // add the node as the child of the current node 4408 c = newNode(subKey, v, null); 4409 c.sibling = child; 4410 child = c; 4411 return true; 4412 } 4413 // have an existing <key, value> already, overwrite it 4414 // if (value != null) { 4415 // return false; 4416 //} 4417 value = v; 4418 return true; 4419 } 4420 // split the existing node 4421 PrefixTree n1 = newNode(key.substring(prefixLen), value, child); 4422 key = k.substring(0, prefixLen); 4423 child = n1; 4424 if (prefixLen < k.length()) { 4425 PrefixTree n2 = newNode(k.substring(prefixLen), v, null); 4426 child.sibling = n2; 4427 value = null; 4428 } else { 4429 value = v; 4430 } 4431 return true; 4432 } 4433 4434 /** 4435 * Match text with the prefix tree. 4436 * 4437 * @param text the input text to parse, not null 4438 * @param off the offset position to start parsing at 4439 * @param end the end position to stop parsing 4440 * @return the resulting string, or null if no match found. 4441 */ 4442 public String match(CharSequence text, int off, int end) { 4443 if (!prefixOf(text, off, end)){ 4444 return null; 4445 } 4446 if (child != null && (off += key.length()) != end) { 4447 PrefixTree c = child; 4448 do { 4449 if (isEqual(c.c0, text.charAt(off))) { 4450 String found = c.match(text, off, end); 4451 if (found != null) { 4452 return found; 4453 } 4454 return value; 4455 } 4456 c = c.sibling; 4457 } while (c != null); 4458 } 4459 return value; 4460 } 4461 4462 /** 4463 * Match text with the prefix tree. 4464 * 4465 * @param text the input text to parse, not null 4466 * @param pos the position to start parsing at, from 0 to the text 4467 * length. Upon return, position will be updated to the new parse 4468 * position, or unchanged, if no match found. 4469 * @return the resulting string, or null if no match found. 4470 */ 4471 public String match(CharSequence text, ParsePosition pos) { 4472 int off = pos.getIndex(); 4473 int end = text.length(); 4474 if (!prefixOf(text, off, end)){ 4475 return null; 4476 } 4477 off += key.length(); 4478 if (child != null && off != end) { 4479 PrefixTree c = child; 4480 do { 4481 if (isEqual(c.c0, text.charAt(off))) { 4482 pos.setIndex(off); 4483 String found = c.match(text, pos); 4484 if (found != null) { 4485 return found; 4486 } 4487 break; 4488 } 4489 c = c.sibling; 4490 } while (c != null); 4491 } 4492 pos.setIndex(off); 4493 return value; 4494 } 4495 4496 protected String toKey(String k) { 4497 return k; 4498 } 4499 4500 protected PrefixTree newNode(String k, String v, PrefixTree child) { 4501 return new PrefixTree(k, v, child); 4502 } 4503 4504 protected boolean isEqual(char c1, char c2) { 4505 return c1 == c2; 4506 } 4507 4508 protected boolean prefixOf(CharSequence text, int off, int end) { 4509 if (text instanceof String) { 4510 return ((String)text).startsWith(key, off); 4511 } 4512 int len = key.length(); 4513 if (len > end - off) { 4514 return false; 4515 } 4516 int off0 = 0; 4517 while (len-- > 0) { 4518 if (!isEqual(key.charAt(off0++), text.charAt(off++))) { 4519 return false; 4520 } 4521 } 4522 return true; 4523 } 4524 4525 private int prefixLength(String k) { 4526 int off = 0; 4527 while (off < k.length() && off < key.length()) { 4528 if (!isEqual(k.charAt(off), key.charAt(off))) { 4529 return off; 4530 } 4531 off++; 4532 } 4533 return off; 4534 } 4535 4536 /** 4537 * Case Insensitive prefix tree. 4538 */ 4539 private static class CI extends PrefixTree { 4540 4541 private CI(String k, String v, PrefixTree child) { 4542 super(k, v, child); 4543 } 4544 4545 @Override 4546 protected CI newNode(String k, String v, PrefixTree child) { 4547 return new CI(k, v, child); 4548 } 4549 4550 @Override 4551 protected boolean isEqual(char c1, char c2) { 4552 return DateTimeParseContext.charEqualsIgnoreCase(c1, c2); 4553 } 4554 4555 @Override 4556 protected boolean prefixOf(CharSequence text, int off, int end) { 4557 int len = key.length(); 4558 if (len > end - off) { 4559 return false; 4560 } 4561 int off0 = 0; 4562 while (len-- > 0) { 4563 if (!isEqual(key.charAt(off0++), text.charAt(off++))) { 4564 return false; 4565 } 4566 } 4567 return true; 4568 } 4569 } 4570 4571 /** 4572 * Lenient prefix tree. Case insensitive and ignores characters 4573 * like space, underscore and slash. 4574 */ 4575 private static class LENIENT extends CI { 4576 4577 private LENIENT(String k, String v, PrefixTree child) { 4578 super(k, v, child); 4579 } 4580 4581 @Override 4582 protected CI newNode(String k, String v, PrefixTree child) { 4583 return new LENIENT(k, v, child); 4584 } 4585 4586 private boolean isLenientChar(char c) { 4587 return c == ' ' || c == '_' || c == '/'; 4588 } 4589 4590 protected String toKey(String k) { 4591 for (int i = 0; i < k.length(); i++) { 4592 if (isLenientChar(k.charAt(i))) { 4593 StringBuilder sb = new StringBuilder(k.length()); 4594 sb.append(k, 0, i); 4595 i++; 4596 while (i < k.length()) { 4597 if (!isLenientChar(k.charAt(i))) { 4598 sb.append(k.charAt(i)); 4599 } 4600 i++; 4601 } 4602 return sb.toString(); 4603 } 4604 } 4605 return k; 4606 } 4607 4608 @Override 4609 public String match(CharSequence text, ParsePosition pos) { 4610 int off = pos.getIndex(); 4611 int end = text.length(); 4612 int len = key.length(); 4613 int koff = 0; 4614 while (koff < len && off < end) { 4615 if (isLenientChar(text.charAt(off))) { 4616 off++; 4617 continue; 4618 } 4619 if (!isEqual(key.charAt(koff++), text.charAt(off++))) { 4620 return null; 4621 } 4622 } 4623 if (koff != len) { 4624 return null; 4625 } 4626 if (child != null && off != end) { 4627 int off0 = off; 4628 while (off0 < end && isLenientChar(text.charAt(off0))) { 4629 off0++; 4630 } 4631 if (off0 < end) { 4632 PrefixTree c = child; 4633 do { 4634 if (isEqual(c.c0, text.charAt(off0))) { 4635 pos.setIndex(off0); 4636 String found = c.match(text, pos); 4637 if (found != null) { 4638 return found; 4639 } 4640 break; 4641 } 4642 c = c.sibling; 4643 } while (c != null); 4644 } 4645 } 4646 pos.setIndex(off); 4647 return value; 4648 } 4649 } 4650 } 4651 4652 //----------------------------------------------------------------------- 4653 /** 4654 * Prints or parses a chronology. 4655 */ 4656 static final class ChronoPrinterParser implements DateTimePrinterParser { 4657 /** The text style to output, null means the ID. */ 4658 private final TextStyle textStyle; 4659 4660 ChronoPrinterParser(TextStyle textStyle) { 4661 // validated by caller 4662 this.textStyle = textStyle; 4663 } 4664 4665 @Override 4666 public boolean format(DateTimePrintContext context, StringBuilder buf) { 4667 Chronology chrono = context.getValue(TemporalQueries.chronology()); 4668 if (chrono == null) { 4669 return false; 4670 } 4671 if (textStyle == null) { 4672 buf.append(chrono.getId()); 4673 } else { 4674 buf.append(getChronologyName(chrono, context.getLocale())); 4675 } 4676 return true; 4677 } 4678 4679 @Override 4680 public int parse(DateTimeParseContext context, CharSequence text, int position) { 4681 // simple looping parser to find the chronology 4682 if (position < 0 || position > text.length()) { 4683 throw new IndexOutOfBoundsException(); 4684 } 4685 Set<Chronology> chronos = Chronology.getAvailableChronologies(); 4686 Chronology bestMatch = null; 4687 int matchLen = -1; 4688 for (Chronology chrono : chronos) { 4689 String name; 4690 if (textStyle == null) { 4691 name = chrono.getId(); 4692 } else { 4693 name = getChronologyName(chrono, context.getLocale()); 4694 } 4695 int nameLen = name.length(); 4696 if (nameLen > matchLen && context.subSequenceEquals(text, position, name, 0, nameLen)) { 4697 bestMatch = chrono; 4698 matchLen = nameLen; 4699 } 4700 } 4701 if (bestMatch == null) { 4702 return ~position; 4703 } 4704 context.setParsed(bestMatch); 4705 return position + matchLen; 4706 } 4707 4708 /** 4709 * Returns the chronology name of the given chrono in the given locale 4710 * if available, or the chronology Id otherwise. The regular ResourceBundle 4711 * search path is used for looking up the chronology name. 4712 * 4713 * @param chrono the chronology, not null 4714 * @param locale the locale, not null 4715 * @return the chronology name of chrono in locale, or the id if no name is available 4716 * @throws NullPointerException if chrono or locale is null 4717 */ 4718 private String getChronologyName(Chronology chrono, Locale locale) { 4719 String key = "calendarname." + chrono.getCalendarType(); 4720 String name = DateTimeTextProvider.getLocalizedResource(key, locale); 4721 return Objects.requireNonNullElseGet(name, () -> chrono.getId()); 4722 } 4723 } 4724 4725 //----------------------------------------------------------------------- 4726 /** 4727 * Prints or parses a localized pattern. 4728 */ 4729 static final class LocalizedPrinterParser implements DateTimePrinterParser { 4730 /** Cache of formatters. */ 4731 private static final ConcurrentMap<String, DateTimeFormatter> FORMATTER_CACHE = new ConcurrentHashMap<>(16, 0.75f, 2); 4732 4733 private final FormatStyle dateStyle; 4734 private final FormatStyle timeStyle; 4735 4736 /** 4737 * Constructor. 4738 * 4739 * @param dateStyle the date style to use, may be null 4740 * @param timeStyle the time style to use, may be null 4741 */ 4742 LocalizedPrinterParser(FormatStyle dateStyle, FormatStyle timeStyle) { 4743 // validated by caller 4744 this.dateStyle = dateStyle; 4745 this.timeStyle = timeStyle; 4746 } 4747 4748 @Override 4749 public boolean format(DateTimePrintContext context, StringBuilder buf) { 4750 Chronology chrono = Chronology.from(context.getTemporal()); 4751 return formatter(context.getLocale(), chrono).toPrinterParser(false).format(context, buf); 4752 } 4753 4754 @Override 4755 public int parse(DateTimeParseContext context, CharSequence text, int position) { 4756 Chronology chrono = context.getEffectiveChronology(); 4757 return formatter(context.getLocale(), chrono).toPrinterParser(false).parse(context, text, position); 4758 } 4759 4760 /** 4761 * Gets the formatter to use. 4762 * <p> 4763 * The formatter will be the most appropriate to use for the date and time style in the locale. 4764 * For example, some locales will use the month name while others will use the number. 4765 * 4766 * @param locale the locale to use, not null 4767 * @param chrono the chronology to use, not null 4768 * @return the formatter, not null 4769 * @throws IllegalArgumentException if the formatter cannot be found 4770 */ 4771 private DateTimeFormatter formatter(Locale locale, Chronology chrono) { 4772 String key = chrono.getId() + '|' + locale.toString() + '|' + dateStyle + timeStyle; 4773 DateTimeFormatter formatter = FORMATTER_CACHE.get(key); 4774 if (formatter == null) { 4775 String pattern = getLocalizedDateTimePattern(dateStyle, timeStyle, chrono, locale); 4776 formatter = new DateTimeFormatterBuilder().appendPattern(pattern).toFormatter(locale); 4777 DateTimeFormatter old = FORMATTER_CACHE.putIfAbsent(key, formatter); 4778 if (old != null) { 4779 formatter = old; 4780 } 4781 } 4782 return formatter; 4783 } 4784 4785 @Override 4786 public String toString() { 4787 return "Localized(" + (dateStyle != null ? dateStyle : "") + "," + 4788 (timeStyle != null ? timeStyle : "") + ")"; 4789 } 4790 } 4791 4792 //----------------------------------------------------------------------- 4793 /** 4794 * Prints or parses a localized pattern from a localized field. 4795 * The specific formatter and parameters is not selected until 4796 * the field is to be printed or parsed. 4797 * The locale is needed to select the proper WeekFields from which 4798 * the field for day-of-week, week-of-month, or week-of-year is selected. 4799 * Hence the inherited field NumberPrinterParser.field is unused. 4800 */ 4801 static final class WeekBasedFieldPrinterParser extends NumberPrinterParser { 4802 private char chr; 4803 private int count; 4804 4805 /** 4806 * Constructor. 4807 * 4808 * @param chr the pattern format letter that added this PrinterParser. 4809 * @param count the repeat count of the format letter 4810 * @param minWidth the minimum field width, from 1 to 19 4811 * @param maxWidth the maximum field width, from minWidth to 19 4812 */ 4813 WeekBasedFieldPrinterParser(char chr, int count, int minWidth, int maxWidth) { 4814 this(chr, count, minWidth, maxWidth, 0); 4815 } 4816 4817 /** 4818 * Constructor. 4819 * 4820 * @param chr the pattern format letter that added this PrinterParser. 4821 * @param count the repeat count of the format letter 4822 * @param minWidth the minimum field width, from 1 to 19 4823 * @param maxWidth the maximum field width, from minWidth to 19 4824 * @param subsequentWidth the width of subsequent non-negative numbers, 0 or greater, 4825 * -1 if fixed width due to active adjacent parsing 4826 */ 4827 WeekBasedFieldPrinterParser(char chr, int count, int minWidth, int maxWidth, 4828 int subsequentWidth) { 4829 super(null, minWidth, maxWidth, SignStyle.NOT_NEGATIVE, subsequentWidth); 4830 this.chr = chr; 4831 this.count = count; 4832 } 4833 4834 /** 4835 * Returns a new instance with fixed width flag set. 4836 * 4837 * @return a new updated printer-parser, not null 4838 */ 4839 @Override 4840 WeekBasedFieldPrinterParser withFixedWidth() { 4841 if (subsequentWidth == -1) { 4842 return this; 4843 } 4844 return new WeekBasedFieldPrinterParser(chr, count, minWidth, maxWidth, -1); 4845 } 4846 4847 /** 4848 * Returns a new instance with an updated subsequent width. 4849 * 4850 * @param subsequentWidth the width of subsequent non-negative numbers, 0 or greater 4851 * @return a new updated printer-parser, not null 4852 */ 4853 @Override 4854 WeekBasedFieldPrinterParser withSubsequentWidth(int subsequentWidth) { 4855 return new WeekBasedFieldPrinterParser(chr, count, minWidth, maxWidth, 4856 this.subsequentWidth + subsequentWidth); 4857 } 4858 4859 @Override 4860 public boolean format(DateTimePrintContext context, StringBuilder buf) { 4861 return printerParser(context.getLocale()).format(context, buf); 4862 } 4863 4864 @Override 4865 public int parse(DateTimeParseContext context, CharSequence text, int position) { 4866 return printerParser(context.getLocale()).parse(context, text, position); 4867 } 4868 4869 /** 4870 * Gets the printerParser to use based on the field and the locale. 4871 * 4872 * @param locale the locale to use, not null 4873 * @return the formatter, not null 4874 * @throws IllegalArgumentException if the formatter cannot be found 4875 */ 4876 private DateTimePrinterParser printerParser(Locale locale) { 4877 WeekFields weekDef = WeekFields.of(locale); 4878 TemporalField field = null; 4879 switch (chr) { 4880 case 'Y': 4881 field = weekDef.weekBasedYear(); 4882 if (count == 2) { 4883 return new ReducedPrinterParser(field, 2, 2, 0, ReducedPrinterParser.BASE_DATE, 4884 this.subsequentWidth); 4885 } else { 4886 return new NumberPrinterParser(field, count, 19, 4887 (count < 4) ? SignStyle.NORMAL : SignStyle.EXCEEDS_PAD, 4888 this.subsequentWidth); 4889 } 4890 case 'e': 4891 case 'c': 4892 field = weekDef.dayOfWeek(); 4893 break; 4894 case 'w': 4895 field = weekDef.weekOfWeekBasedYear(); 4896 break; 4897 case 'W': 4898 field = weekDef.weekOfMonth(); 4899 break; 4900 default: 4901 throw new IllegalStateException("unreachable"); 4902 } 4903 return new NumberPrinterParser(field, minWidth, maxWidth, SignStyle.NOT_NEGATIVE, 4904 this.subsequentWidth); 4905 } 4906 4907 @Override 4908 public String toString() { 4909 StringBuilder sb = new StringBuilder(30); 4910 sb.append("Localized("); 4911 if (chr == 'Y') { 4912 if (count == 1) { 4913 sb.append("WeekBasedYear"); 4914 } else if (count == 2) { 4915 sb.append("ReducedValue(WeekBasedYear,2,2,2000-01-01)"); 4916 } else { 4917 sb.append("WeekBasedYear,").append(count).append(",") 4918 .append(19).append(",") 4919 .append((count < 4) ? SignStyle.NORMAL : SignStyle.EXCEEDS_PAD); 4920 } 4921 } else { 4922 switch (chr) { 4923 case 'c': 4924 case 'e': 4925 sb.append("DayOfWeek"); 4926 break; 4927 case 'w': 4928 sb.append("WeekOfWeekBasedYear"); 4929 break; 4930 case 'W': 4931 sb.append("WeekOfMonth"); 4932 break; 4933 default: 4934 break; 4935 } 4936 sb.append(","); 4937 sb.append(count); 4938 } 4939 sb.append(")"); 4940 return sb.toString(); 4941 } 4942 } 4943 4944 //------------------------------------------------------------------------- 4945 /** 4946 * Length comparator. 4947 */ 4948 static final Comparator<String> LENGTH_SORT = new Comparator<String>() { 4949 @Override 4950 public int compare(String str1, String str2) { 4951 return str1.length() == str2.length() ? str1.compareTo(str2) : str1.length() - str2.length(); 4952 } 4953 }; 4954 }