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8303018: Unicode Emoji Properties
Reviewed-by: prr, erikj, rriggs
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make/jdk/src/classes/build/tools/generatecharacter/EmojiData.java
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| /* | ||
| * Copyright (c) 2019, 2023, Oracle and/or its affiliates. All rights reserved. | ||
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| * | ||
| * This code is free software; you can redistribute it and/or modify it | ||
| * under the terms of the GNU General Public License version 2 only, as | ||
| * published by the Free Software Foundation. Oracle designates this | ||
| * particular file as subject to the "Classpath" exception as provided | ||
| * by Oracle in the LICENSE file that accompanied this code. | ||
| * | ||
| * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| * version 2 for more details (a copy is included in the LICENSE file that | ||
| * accompanied this code). | ||
| * | ||
| * You should have received a copy of the GNU General Public License version | ||
| * 2 along with this work; if not, write to the Free Software Foundation, | ||
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| * | ||
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| * or visit www.oracle.com if you need additional information or have any | ||
| * questions. | ||
| */ | ||
|
|
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| package build.tools.generatecharacter; | ||
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|
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| import java.io.IOException; | ||
| import java.nio.file.Files; | ||
| import java.nio.file.Path; | ||
| import java.nio.file.StandardOpenOption; | ||
| import java.util.AbstractMap; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
| import java.util.function.Predicate; | ||
| import java.util.stream.Collectors; | ||
| import java.util.stream.IntStream; | ||
| import java.util.stream.Stream; | ||
|
|
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| /** | ||
| * A class holding emoji character properties | ||
| * https://unicode.org/reports/tr51/#Emoji_Properties_and_Data_Files | ||
| */ | ||
| class EmojiData { | ||
| // Emoji properties map | ||
| private final Map<Integer, Long> emojiProps; | ||
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| static EmojiData readSpecFile(Path file, int plane) throws IOException { | ||
| return new EmojiData(file, plane); | ||
| } | ||
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| EmojiData(Path file, int plane) throws IOException { | ||
| emojiProps = Files.readAllLines(file).stream() | ||
| .map(line -> line.split("#", 2)[0]) | ||
| .filter(Predicate.not(String::isBlank)) | ||
| .map(line -> line.split("[ \t]*;[ \t]*", 2)) | ||
| .flatMap(map -> { | ||
| var range = map[0].split("\\.\\.", 2); | ||
| var start = Integer.valueOf(range[0], 16); | ||
| if ((start >> 16) != plane) { | ||
| return Stream.empty(); | ||
| } else { | ||
| return range.length == 1 ? | ||
| Stream.of(new AbstractMap.SimpleEntry<>(start, convertType(map[1].trim()))) : | ||
| IntStream.rangeClosed(start, Integer.valueOf(range[1], 16)) | ||
| .mapToObj(cp -> new AbstractMap.SimpleEntry<>(cp, convertType(map[1].trim()))); | ||
| } | ||
| }) | ||
| .collect(Collectors.toMap(AbstractMap.SimpleEntry::getKey, | ||
| AbstractMap.SimpleEntry::getValue, | ||
| (v1, v2) -> v1 | v2)); | ||
| } | ||
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| long properties(int cp) { | ||
| return emojiProps.get(cp); | ||
| } | ||
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| Set<Integer> codepoints() { | ||
| return emojiProps.keySet(); | ||
| } | ||
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| private static long convertType(String type) { | ||
| return switch (type) { | ||
| case "Emoji" -> GenerateCharacter.maskEmoji; | ||
| case "Emoji_Presentation" -> GenerateCharacter.maskEmojiPresentation; | ||
| case "Emoji_Modifier" -> GenerateCharacter.maskEmojiModifier; | ||
| case "Emoji_Modifier_Base" -> GenerateCharacter.maskEmojiModifierBase; | ||
| case "Emoji_Component" -> GenerateCharacter.maskEmojiComponent; | ||
| case "Extended_Pictographic" -> GenerateCharacter.maskExtendedPictographic; | ||
| default -> throw new InternalError("Unrecognizable Emoji type: " + type); | ||
| }; | ||
| } | ||
| } |
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