1 /*
2 * Copyright (c) 2000, 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 import java.io.BufferedWriter;
25 import java.io.File;
26 import java.io.FileWriter;
27 import java.io.IOException;
28 import java.util.HashMap;
29 import java.util.List;
30 import java.util.Map;
31 import java.util.Set;
32 import java.util.SortedMap;
33 import java.util.TreeMap;
34 import java.util.TreeSet;
35
36 /**
37 * <code>Simple</code> generates TimeZoneData, which had been used as internal
38 * data of TimeZone before J2SDK1.3.
39 * Since J2SDK1.4 doesn't need TimeZoneData, this class is for maintenance
40 * of old JDK release.
41 */
42 class Simple extends BackEnd {
43
44 /**
45 * Zone records which are applied for given year.
46 */
47 private static Map<String,ZoneRec> lastZoneRecs = new HashMap<>();
48
49 /**
50 * Rule records which are applied for given year.
51 */
52 private static Map<String,List<RuleRec>> lastRules = new TreeMap<>();
53
54 /**
55 * zone IDs sorted by their GMT offsets. If zone's GMT
56 * offset will change in the future, its last known offset is
57 * used.
58 */
59 private SortedMap<Integer, Set<String>> zonesByOffset = new TreeMap<>();
60
61 /**
62 * Sets last Rule records and Zone records for given timezone to
63 * each Map.
64 *
65 * @param tz Timezone object for each zone
66 * @return always 0
67 */
68 int processZoneinfo(Timezone tz) {
69 String zonename = tz.getName();
70
71 lastRules.put(zonename, tz.getLastRules());
72 lastZoneRecs.put(zonename, tz.getLastZoneRec());
73
74 // Populate zonesByOffset. (Zones that will change their
75 // GMT offsets are also added to zonesByOffset here.)
76 int lastKnownOffset = tz.getRawOffset();
77 Set<String> set = zonesByOffset.get(lastKnownOffset);
78 if (set == null) {
79 set = new TreeSet<>();
80 zonesByOffset.put(lastKnownOffset, set);
81 }
82 set.add(zonename);
83
84 return 0;
85 }
86
87 /**
88 * Generates TimeZoneData to output SimpleTimeZone data.
89 * @param map Mappings object which is generated by {@link Main#compile}.
90 * @return 0 if no error occurred, otherwise 1.
91 */
92 int generateSrc(Mappings map) {
93 try {
94 File outD = new File(Main.getOutputDir());
95 outD.mkdirs();
96
97 FileWriter fw =
98 new FileWriter(new File(outD, "TimeZoneData.java"), false);
99 BufferedWriter out = new BufferedWriter(fw);
100
101 out.write("import java.util.SimpleTimeZone;\n\n");
102 out.write(" static SimpleTimeZone zones[] = {\n");
103
104 Map<String,String> a = map.getAliases();
105 List<Integer> roi = map.getRawOffsetsIndex();
106 List<Set<String>> roit = map.getRawOffsetsIndexTable();
107
108 int index = 0;
109 for (int offset : zonesByOffset.keySet()) {
110 int o = roi.get(index);
111 Set<String> set = zonesByOffset.get(offset);
112 if (offset == o) {
113 // Merge aliases into zonesByOffset
114 set.addAll(roit.get(index));
115 }
116 index++;
117
118 for (String key : set) {
119 ZoneRec zrec;
120 String realname;
121 List<RuleRec> stz;
122 if ((realname = a.get(key)) != null) {
123 // if this alias is not targeted, ignore it.
124 if (!Zone.isTargetZone(key)) {
125 continue;
126 }
127 stz = lastRules.get(realname);
128 zrec = lastZoneRecs.get(realname);
129 } else {
130 stz = lastRules.get(key);
131 zrec = lastZoneRecs.get(key);
132 }
133
134 out.write("\t//--------------------------------------------------------------------\n");
135 String s = Time.toFormedString(offset);
136 out.write("\tnew SimpleTimeZone(" +
137 Time.toFormedString(offset) + ", \"" + key + "\"");
138 if (realname != null) {
139 out.write(" /* " + realname + " */");
140 }
141
142 if (stz == null) {
143 out.write("),\n");
144 } else {
145 RuleRec rr0 = stz.get(0);
146 RuleRec rr1 = stz.get(1);
147
148 out.write(",\n\t " + Month.toString(rr0.getMonthNum()) +
149 ", " + rr0.getDay().getDayForSimpleTimeZone() + ", " +
150 rr0.getDay().getDayOfWeekForSimpleTimeZone() + ", " +
151 Time.toFormedString((int)rr0.getTime().getTime()) + ", " +
152 rr0.getTime().getTypeForSimpleTimeZone() + ",\n" +
153
154 "\t " + Month.toString(rr1.getMonthNum()) + ", " +
155 rr1.getDay().getDayForSimpleTimeZone() + ", " +
156 rr1.getDay().getDayOfWeekForSimpleTimeZone() + ", " +
157 Time.toFormedString((int)rr1.getTime().getTime())+ ", " +
158 rr1.getTime().getTypeForSimpleTimeZone() + ",\n" +
159
160 "\t " + Time.toFormedString(rr0.getSave()) + "),\n");
161
162 out.write("\t// " + rr0.getLine() + "\n");
163 out.write("\t// " + rr1.getLine() + "\n");
164 }
165
166 String zline = zrec.getLine();
167 if (zline.indexOf("Zone") == -1) {
168 zline = "Zone " + key + "\t" + zline.trim();
169 }
170 out.write("\t// " + zline + "\n");
171 }
172 }
173 out.write(" };\n");
174
175 out.close();
176 fw.close();
177 } catch(IOException e) {
178 Main.panic("IO error: "+e.getMessage());
179 return 1;
180 }
181
182 return 0;
183 }
184 }