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Grishka
2022-02-02 16:23:09 +03:00
parent c885a5fc28
commit 102fbeee1a
5 changed files with 38 additions and 44 deletions
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41
mastodon/src/main/java/org/joinmastodon/android/utils/CharRegex.java
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package org.joinmastodon.android.utils;
import java.util.regex.Pattern;
/**
* from https://github.com/Richienb/char-regex/blob/master/index.js
*/
public class CharRegex{
// Used to compose unicode character classes.
private static final String astralRange = "\\ud800-\\udfff";
private static final String comboMarksRange = "\\u0300-\\u036f";
private static final String comboHalfMarksRange = "\\ufe20-\\ufe2f";
private static final String comboSymbolsRange = "\\u20d0-\\u20ff";
private static final String comboMarksExtendedRange = "\\u1ab0-\\u1aff";
private static final String comboMarksSupplementRange = "\\u1dc0-\\u1dff";
private static final String comboRange = comboMarksRange + comboHalfMarksRange + comboSymbolsRange + comboMarksExtendedRange + comboMarksSupplementRange;
private static final String varRange = "\\ufe0e\\ufe0f";
// Used to compose unicode capture groups.
private static final String astral = "["+astralRange+"]";
private static final String combo = "["+comboRange+"]";
private static final String fitz = "\\ud83c[\\udffb-\\udfff]";
private static final String modifier = "(?:"+combo+"|"+fitz+")";
private static final String nonAstral = "[^"+astralRange+"]";
private static final String regional = "(?:\\ud83c[\\udde6-\\uddff]){2}";
private static final String surrogatePair = "[\\ud800-\\udbff][\\udc00-\\udfff]";
private static final String zeroWidthJoiner = "\\u200d";
private static final String blackFlag = "(?:\\ud83c\\udff4\\udb40\\udc67\\udb40\\udc62\\udb40(?:\\udc65|\\udc73|\\udc77)\\udb40(?:\\udc6e|\\udc63|\\udc6c)\\udb40(?:\\udc67|\\udc74|\\udc73)\\udb40\\udc7f)";
// Used to compose unicode regexes.
private static final String optModifier = modifier+"?";
private static final String optVar = "["+varRange+"]?";
private static final String optJoin = "(?:"+zeroWidthJoiner+"(?:"+nonAstral+"|"+regional+"|"+surrogatePair+")"+optVar + optModifier+")*";
private static final String seq = optVar + optModifier + optJoin;
private static final String nonAstralCombo = nonAstral+combo+"?";
private static final String symbol = "(?:"+blackFlag+"|"+nonAstralCombo+"|"+combo+"|"+regional+"|"+surrogatePair+"|"+astral+")";
public static final Pattern REGEX=Pattern.compile(fitz+"(?="+fitz+")|"+symbol + seq);
// public static final Pattern REGEX=Pattern.compile("\\ud83c[\\udffb-\\udfff](?=\\ud83c[\\udffb-\\udfff])|(?:(?:\\ud83c\\udff4\\udb40\\udc67\\udb40\\udc62\\udb40(?:\\udc65|\\udc73|\\udc77)\\udb40(?:\\udc6e|\\udc63|\\udc6c)\\udb40(?:\\udc67|\\udc74|\\udc73)\\udb40\\udc7f)|[^\\ud800-\\udfff][\\u0300-\\u036f\\ufe20-\\ufe2f\\u20d0-\\u20ff\\u1ab0-\\u1aff\\u1dc0-\\u1dff]?|[\\u0300-\\u036f\\ufe20-\\ufe2f\\u20d0-\\u20ff\\u1ab0-\\u1aff\\u1dc0-\\u1dff]|(?:\\ud83c[\\udde6-\\uddff]){2}|[\\ud800-\\udbff][\\udc00-\\udfff]|[\\ud800-\\udfff])[\\ufe0e\\ufe0f]?(?:[\\u0300-\\u036f\\ufe20-\\ufe2f\\u20d0-\\u20ff\\u1ab0-\\u1aff\\u1dc0-\\u1dff]|\\ud83c[\\udffb-\\udfff])?(?:\\u200d(?:[^\\ud800-\\udfff]|(?:\\ud83c[\\udde6-\\uddff]){2}|[\\ud800-\\udbff][\\udc00-\\udfff])[\\ufe0e\\ufe0f]?(?:[\\u0300-\\u036f\\ufe20-\\ufe2f\\u20d0-\\u20ff\\u1ab0-\\u1aff\\u1dc0-\\u1dff]|\\ud83c[\\udffb-\\udfff])?)*");
}