1 /*
2 * Copyright (c) 2019, 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 package build.tools.generateemojidata;
27
28 import java.io.IOException;
29 import java.nio.file.Files;
30 import java.nio.file.Paths;
31 import java.nio.file.StandardOpenOption;
32 import java.util.ArrayList;
33 import java.util.List;
34 import java.util.function.Predicate;
35 import java.util.stream.Collectors;
36 import java.util.stream.Stream;
37
38 /**
39 * Generate EmojiData.java
40 * args[0]: Full path string to the template file
41 * args[1]: Full path string to the directory that contains "emoji-data.txt"
42 * args[2]: Full path string to the generated .java file
43 */
44 public class GenerateEmojiData {
45 public static void main(String[] args) {
46 try {
47 final Range[] last = new Range[1]; // last extended pictographic range
48 last[0] = new Range(0, 0);
49
50 List<Range> extPictRanges = Files.lines(Paths.get(args[1], "emoji-data.txt"))
51 .filter(Predicate.not(l -> l.startsWith("#") || l.isBlank()))
52 .filter(l -> l.contains("; Extended_Pictograph"))
53 .map(l -> new Range(l.replaceFirst(" .*", "")))
54 .sorted()
55 .collect(ArrayList<Range>::new,
56 (list, r) -> {
57 // collapsing consecutive pictographic ranges
58 int lastIndex = list.size() - 1;
59 if (lastIndex >= 0) {
60 Range lastRange = list.get(lastIndex);
61 if (lastRange.last + 1 == r.start) {
62 list.set(lastIndex, new Range(lastRange.start, r.last));
63 return;
64 }
65 }
66 list.add(r);
67 },
68 ArrayList<Range>::addAll);
69
70 // make the code point conditions
71 String extPictCodePoints = extPictRanges.stream()
72 .map(r -> {
73 if (r.start == r.last) {
74 return (" ".repeat(12) + "cp == 0x" + toHexString(r.start));
75 } else if (r.start == r.last - 1) {
76 return " ".repeat(12) + "cp == 0x" + toHexString(r.start) + " ||\n" +
77 " ".repeat(12) + "cp == 0x" + toHexString(r.last);
78 } else {
79 return " ".repeat(11) + "(cp >= 0x" + toHexString(r.start) +
80 " && cp <= 0x" + toHexString(r.last) + ")";
81 }
82 })
83 .collect(Collectors.joining(" ||\n")) + ";\n";
84
85 // Generate EmojiData.java file
86 Files.write(Paths.get(args[2]),
87 Files.lines(Paths.get(args[0]))
88 .flatMap(l -> {
89 if (l.equals("%%%EXTPICT%%%")) {
90 return Stream.of(extPictCodePoints);
91 } else {
92 return Stream.of(l);
93 }
94 })
95 .collect(Collectors.toList()),
96 StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING);
97 } catch (IOException e) {
98 e.printStackTrace();
99 }
100 }
101
102 static int toInt(String hexStr) {
103 return Integer.parseUnsignedInt(hexStr, 16);
104 }
105
106 static String toHexString(int cp) {
107 String ret = Integer.toUnsignedString(cp, 16).toUpperCase();
108 if (ret.length() < 4) {
109 ret = "0".repeat(4 - ret.length()) + ret;
110 }
111 return ret;
112 }
113
114 static class Range implements Comparable<Range> {
115 int start;
116 int last;
117
118 Range (int start, int last) {
119 this.start = start;
120 this.last = last;
121 }
122
123 Range (String input) {
124 input = input.replaceFirst("\\s#.*", "");
125 start = toInt(input.replaceFirst("[\\s\\.].*", ""));
126 last = input.contains("..") ?
127 toInt(input.replaceFirst(".*\\.\\.", "")
128 .replaceFirst(";.*", "").trim())
129 : start;
130 }
131
132 @Override
133 public String toString() {
134 return "Start: " + toHexString(start) + ", Last: " + toHexString(last);
135 }
136
137 @Override
138 public int compareTo(Range other) {
139 return Integer.compare(start, other.start);
140 }
141 }
142 }