60 lines
2.3 KiB
Java
60 lines
2.3 KiB
Java
/* Copyright 2017 Andrew Dawson
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*
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* This file is a part of Tusky.
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*
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* This program is free software; you can redistribute it and/or modify it under the terms of the
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* GNU General Public License as published by the Free Software Foundation; either version 3 of the
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* License, or (at your option) any later version.
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*
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* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
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* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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* 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 along with Tusky; if not,
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* see <http://www.gnu.org/licenses>. */
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package com.keylesspalace.tusky.json;
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import android.text.Spanned;
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import android.text.SpannedString;
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import androidx.core.text.HtmlCompat;
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import com.google.gson.JsonDeserializationContext;
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import com.google.gson.JsonDeserializer;
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import com.google.gson.JsonElement;
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import com.google.gson.JsonParseException;
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import com.google.gson.JsonPrimitive;
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import com.google.gson.JsonSerializationContext;
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import com.google.gson.JsonSerializer;
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import java.lang.reflect.Type;
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public class SpannedTypeAdapter implements JsonDeserializer<Spanned>, JsonSerializer<Spanned> {
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@Override
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public Spanned deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
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throws JsonParseException {
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String string = json.getAsString();
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if (string != null) {
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/* Html.fromHtml returns trailing whitespace if the html ends in a </p> tag, which
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* all status contents do, so it should be trimmed. */
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return (Spanned)trimTrailingWhitespace(HtmlCompat.fromHtml(string, HtmlCompat.FROM_HTML_MODE_LEGACY));
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} else {
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return new SpannedString("");
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}
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}
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@Override
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public JsonElement serialize(Spanned src, Type typeOfSrc, JsonSerializationContext context) {
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return new JsonPrimitive(HtmlCompat.toHtml(src, HtmlCompat.TO_HTML_PARAGRAPH_LINES_INDIVIDUAL));
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}
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private static CharSequence trimTrailingWhitespace(CharSequence s) {
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int i = s.length();
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do {
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i--;
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} while (i >= 0 && Character.isWhitespace(s.charAt(i)));
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return s.subSequence(0, i + 1);
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}
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}
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