1 files changed, 117 insertions, 0 deletions
diff --git a/src/java/org/apache/fop/fonts/CachedFontInfo.java b/src/java/org/apache/fop/fonts/CachedFontInfo.java
new file mode 100644
index 000000000..281289193
--- /dev/null
+++ b/src/java/org/apache/fop/fonts/CachedFontInfo.java
@@ -0,0 +1,117 @@
+/*
+ * 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.util.List;
+
+import org.apache.xml.utils.URI;
+import org.apache.xml.utils.URI.MalformedURIException;
+
+/**
+ * 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) {
+                if (urlStr.startsWith("file:")) {
+                    URI uri;
+                    try {
+                        uri = new URI(urlStr);
+                        urlStr = uri.getPath();
+                    } catch (MalformedURIException e) {
+                        // do nothing
+                    }
+                }
+                File 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 
+     * @see java.lang.Object#toString()
+     */
+    public String toString() {
+        return super.toString() + ", lastModified=" + lastModified;
+    }
+}