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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.net.MalformedURLException;
import java.net.URL;
import java.util.List;
import org.apache.commons.io.FileUtils;
/**
* Font info stored in the cache
*/
public class CachedFontInfo extends EmbedFontInfo {
/** Serialization Version UID */
private static final long serialVersionUID = 240028291961081894L;
/** file modify date (if available) */
private long lastModified = -1;
/**
* Returns a file given a list of urls
* @param urls array of possible font urls
* @return file font file
*/
public static File getFileFromUrls(String[] urls) {
for (int i = 0; i < urls.length; i++) {
String urlStr = urls[i];
if (urlStr != null) {
File fontFile = null;
if (urlStr.startsWith("file:")) {
try {
URL url = new URL(urlStr);
fontFile = FileUtils.toFile(url);
} catch (MalformedURLException mfue) {
// do nothing
}
}
if (fontFile == null) {
fontFile = new File(urlStr);
}
if (fontFile.exists() && fontFile.canRead()) {
return fontFile;
}
}
}
return null;
}
/**
* Default constructor
* @param metricsFile metrics file
* @param kerning kerning
* @param fontTriplets font triplets
* @param embedFile embed file
* @param lastModified timestamp that this font was last modified
*/
public CachedFontInfo(String metricsFile, boolean kerning, List fontTriplets,
String embedFile, long lastModified) {
super(metricsFile, kerning, fontTriplets, embedFile);
this.lastModified = lastModified;
}
/**
* Constructor
* @param fontInfo an existing embed font info
*/
public CachedFontInfo(EmbedFontInfo fontInfo) {
super(fontInfo.metricsFile, fontInfo.kerning, fontInfo.fontTriplets, fontInfo.embedFile);
// try and determine modified date
File fontFile = getFileFromUrls(new String[] {embedFile, metricsFile});
if (fontFile != null ) {
this.lastModified = fontFile.lastModified();
}
}
/**
* Gets the modified timestamp for font file (not always available)
* @return modified timestamp
*/
public long lastModified() {
return this.lastModified;
}
/**
* Gets the modified timestamp for font file
* (used for the purposes of font info caching)
* @param lastModified modified font file timestamp
*/
public void setLastModified(long lastModified) {
this.lastModified = lastModified;
}
/**
* @return string representation of this object
* {@inheritDoc}
*/
public String toString() {
return super.toString() + ", lastModified=" + lastModified;
}
}
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