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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id$ */
package org.apache.fop.fonts;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.util.List;
import org.apache.commons.io.FileUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.xmlgraphics.util.ClasspathResource;
import org.apache.fop.apps.FOPException;
import org.apache.fop.fonts.autodetect.FontFileFinder;
import org.apache.fop.util.LogUtil;
/**
* Detector of operating system and classpath fonts
*/
public class FontDetector {
private static Log log = LogFactory.getLog(FontDetector.class);
private static final String[] FONT_MIMETYPES = {
"application/x-font", "application/x-font-truetype"
};
private final FontManager fontManager;
private final FontAdder fontAdder;
private final boolean strict;
private final FontEventListener eventListener;
/**
* Main constructor
* @param manager the font manager
* @param adder the font adder
* @param strict true if an Exception should be thrown if an error is found.
* @param listener for throwing font related events
*/
public FontDetector(FontManager manager, FontAdder adder, boolean strict,
FontEventListener listener) {
this.fontManager = manager;
this.fontAdder = adder;
this.strict = strict;
this.eventListener = listener;
}
/**
* Detect installed fonts on the system
* @param fontInfoList a list of fontinfo to populate
* @throws FOPException thrown if a problem occurred during detection
*/
public void detect(List<EmbedFontInfo> fontInfoList) throws FOPException {
// search in font base if it is defined and
// is a directory but don't recurse
FontFileFinder fontFileFinder = new FontFileFinder(eventListener);
String fontBaseURL = fontManager.getFontBaseURL();
if (fontBaseURL != null) {
try {
File fontBase = FileUtils.toFile(new URL(fontBaseURL));
if (fontBase != null) {
List<URL> fontURLList = fontFileFinder.find(fontBase.getAbsolutePath());
fontAdder.add(fontURLList, fontInfoList);
//Can only use the font base URL if it's a file URL
}
} catch (IOException e) {
LogUtil.handleException(log, e, strict);
}
}
// native o/s font directory finding
List<URL> systemFontList;
try {
systemFontList = fontFileFinder.find();
fontAdder.add(systemFontList, fontInfoList);
} catch (IOException e) {
LogUtil.handleException(log, e, strict);
}
// classpath font finding
ClasspathResource resource = ClasspathResource.getInstance();
for (int i = 0; i < FONT_MIMETYPES.length; i++) {
fontAdder.add(resource.listResourcesOfMimeType(FONT_MIMETYPES[i]), fontInfoList);
}
}
}
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