76 lines
2.7 KiB
Java
76 lines
2.7 KiB
Java
/*
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* Twidere - Twitter client for Android
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*
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* Copyright (C) 2012-2014 Mariotaku Lee <mariotaku.lee@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.mariotaku.twidere.util;
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import org.apache.commons.lang3.StringEscapeUtils;
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import org.apache.commons.lang3.text.translate.AggregateTranslator;
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import org.apache.commons.lang3.text.translate.CodePointTranslator;
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import org.apache.commons.lang3.text.translate.EntityArrays;
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import org.apache.commons.lang3.text.translate.LookupTranslator;
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import java.io.IOException;
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import java.io.Writer;
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public class HtmlEscapeHelper {
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public static final AggregateTranslator ESCAPE_HTML = new AggregateTranslator(StringEscapeUtils.ESCAPE_HTML4,
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new UnicodeControlCharacterToHtmlTranslator());
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public static final LookupTranslator ESCAPE_BASIC = new LookupTranslator(EntityArrays.BASIC_ESCAPE());
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private HtmlEscapeHelper() {
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}
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public static String escape(final CharSequence text) {
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if (text == null) return null;
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return ESCAPE_HTML.translate(text);
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}
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public static String toPlainText(final String string) {
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if (string == null) return null;
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return unescape(string.replace("<br/>", "\n").replaceAll("<!--.*?-->|<[^>]+>", ""));
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}
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public static String unescape(final String string) {
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if (string == null) return null;
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return StringEscapeUtils.unescapeHtml4(string);
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}
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public static String escapeBasic(CharSequence text) {
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return ESCAPE_BASIC.translate(text);
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}
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private static class UnicodeControlCharacterToHtmlTranslator extends CodePointTranslator {
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@Override
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public boolean translate(int codePoint, Writer out) throws IOException {
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if (Character.isISOControl(codePoint)) {
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out.append("&#x");
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final char[] chars = Character.toChars(codePoint);
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for (char c : chars) {
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out.append(Integer.toHexString(c));
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}
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out.append(';');
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return true;
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}
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return false;
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}
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}
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}
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