New class to handle filename filtering on Mac OS X by using extensions and also examining the content types of resource forks.

1 files changed, 96 insertions, 0 deletions

diff --git a/src/net/java/dev/typecast/app/editor/MacOSFilenameFilter.java b/src/net/java/dev/typecast/app/editor/MacOSFilenameFilter.java
new file mode 100644
index 0000000..1de98fd
--- /dev/null
+++ b/src/net/java/dev/typecast/app/editor/MacOSFilenameFilter.java
@@ -0,0 +1,96 @@
+/*
+ * $Id: MacOSFilenameFilter.java,v 1.1 2007-02-09 00:53:28 davidsch Exp $
+ *
+ * Typecast - The Font Development Environment
+ *
+ * Copyright (c) 2004 David Schweinsberg
+ *
+ * Licensed 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.
+ */
+
+package net.java.dev.typecast.app.editor;
+
+import java.io.BufferedInputStream;
+import java.io.DataInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FilenameFilter;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+
+import net.java.dev.typecast.ot.mac.ResourceHeader;
+import net.java.dev.typecast.ot.mac.ResourceMap;
+import net.java.dev.typecast.ot.mac.ResourceType;
+
+/**
+ * A FilenameFilter implementation that includes font files based on their
+ * extension and also by the presence of fonts in the resource fork.
+ * @author <a href="mailto:[email protected]">David Schweinsberg</a>
+ * @version $Id: MacOSFilenameFilter.java,v 1.1 2007-02-09 00:53:28 davidsch Exp $
+ */
+public class MacOSFilenameFilter implements FilenameFilter {
+    
+    /** Creates a new instance of MacOSFilenameFilter */
+    public MacOSFilenameFilter() {
+    }
+
+    public boolean accept(File dir, String name) {
+        if (name.endsWith(".ttf")
+            || name.endsWith(".ttc")
+            || name.endsWith(".otf")
+            || name.endsWith(".dfont")
+            || name.endsWith(".suit")) {
+            return true;
+        } else if (name.indexOf('.') == -1) {
+            
+            // This filename has no extension, so we'll look into any
+            // resource fork.  But first, if there is data in the data fork,
+            // then we'll reject this as a font file
+            File dataFork = new File(dir, name);
+            if (dataFork.length() > 0) {
+                return false;
+            }
+  
+            // OK, go for the resource fork
+            File file = new File(dataFork, "..namedfork/rsrc");
+            if (file.exists() && file.length() > 0) {
+                try {
+                    DataInputStream dis = new DataInputStream(
+                        new BufferedInputStream(
+                            new FileInputStream(file), (int) file.length()));
+                    dis.mark((int) file.length());
+
+                    // Is this a Macintosh font suitcase resource?
+                    ResourceHeader resourceHeader = new ResourceHeader(dis);
+
+                    // Seek to the map offset and read the map
+                    dis.reset();
+                    dis.skip(resourceHeader.getMapOffset());
+                    ResourceMap map = new ResourceMap(dis);
+
+                    // Get any 'sfnt' resources
+                    ResourceType resourceType = map.getResourceType("sfnt");
+                    dis.close();
+                    if (resourceType != null) {
+                        return true;
+                    }
+                } catch (FileNotFoundException e) {
+                    // ignore
+                } catch (IOException e) {
+                    // ignore
+                }
+            }
+        }
+        return false;
+    }
+}