9a5b61ccc8
This patch improves Minikin-based font handling, to deal with error conditions (missing fonts and so on), and also moves the parsing of fallback_fonts.xml and system_fonts.xml into Java code. Change-Id: Ib0debdbd56ad3b0196be6d2a35668d711c98f1e5
118 lines
3.9 KiB
Java
118 lines
3.9 KiB
Java
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.graphics;
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import android.util.Xml;
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import org.xmlpull.v1.XmlPullParser;
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import org.xmlpull.v1.XmlPullParserException;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* Parser for font config files.
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*
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* @hide
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*/
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public class FontListParser {
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public static class Family {
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public Family(List<String> names, List<String> fontFiles) {
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this.names = names;
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this.fontFiles = fontFiles;
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}
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public List<String> names;
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// todo: need attributes for font files
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public List<String> fontFiles;
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}
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/* Parse fallback list (no names) */
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public static List<Family> parse(InputStream in) throws XmlPullParserException, IOException {
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try {
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XmlPullParser parser = Xml.newPullParser();
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parser.setInput(in, null);
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parser.nextTag();
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return readFamilies(parser);
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} finally {
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in.close();
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}
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}
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private static List<Family> readFamilies(XmlPullParser parser)
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throws XmlPullParserException, IOException {
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List<Family> families = new ArrayList<Family>();
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parser.require(XmlPullParser.START_TAG, null, "familyset");
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while (parser.next() != XmlPullParser.END_TAG) {
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if (parser.getEventType() != XmlPullParser.START_TAG) continue;
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if (parser.getName().equals("family")) {
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families.add(readFamily(parser));
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} else {
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skip(parser);
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}
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}
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return families;
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}
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private static Family readFamily(XmlPullParser parser)
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throws XmlPullParserException, IOException {
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List<String> names = null;
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List<String> fontFiles = new ArrayList<String>();
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while (parser.next() != XmlPullParser.END_TAG) {
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if (parser.getEventType() != XmlPullParser.START_TAG) continue;
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String tag = parser.getName();
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if (tag.equals("fileset")) {
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while (parser.next() != XmlPullParser.END_TAG) {
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if (parser.getEventType() != XmlPullParser.START_TAG) continue;
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if (parser.getName().equals("file")) {
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String filename = parser.nextText();
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String fullFilename = "/system/fonts/" + filename;
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fontFiles.add(fullFilename);
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}
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}
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} else if (tag.equals("nameset")) {
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names = new ArrayList<String>();
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while (parser.next() != XmlPullParser.END_TAG) {
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if (parser.getEventType() != XmlPullParser.START_TAG) continue;
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if (parser.getName().equals("name")) {
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String name = parser.nextText();
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names.add(name);
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}
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}
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}
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}
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return new Family(names, fontFiles);
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}
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private static void skip(XmlPullParser parser) throws XmlPullParserException, IOException {
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int depth = 1;
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while (depth > 0) {
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switch (parser.next()) {
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case XmlPullParser.START_TAG:
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depth++;
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break;
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case XmlPullParser.END_TAG:
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depth--;
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break;
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}
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}
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}
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}
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