[Archive-access-cvs] SF.net SVN: archive-access: [2083] trunk/archive-access/projects/wayback/ wayback-core/src/main/java/org/archive/wayback/resourcestore/ ResourceFactory.java

[<bra...@us...>]

Revision: 2083
          http://archive-access.svn.sourceforge.net/archive-access/?rev=2083&view=rev
Author:   bradtofel
Date:     2007-11-27 18:02:06 -0800 (Tue, 27 Nov 2007)

Log Message:
-----------
INITIAL REV: single static method to coerce a ARC/WARC file+offset into a Wayback Resource

Added Paths:
-----------
    trunk/archive-access/projects/wayback/wayback-core/src/main/java/org/archive/wayback/resourcestore/ResourceFactory.java

Added: trunk/archive-access/projects/wayback/wayback-core/src/main/java/org/archive/wayback/resourcestore/ResourceFactory.java
===================================================================
--- trunk/archive-access/projects/wayback/wayback-core/src/main/java/org/archive/wayback/resourcestore/ResourceFactory.java	                        (rev 0)
+++ trunk/archive-access/projects/wayback/wayback-core/src/main/java/org/archive/wayback/resourcestore/ResourceFactory.java	2007-11-28 02:02:06 UTC (rev 2083)
@@ -0,0 +1,50 @@
+package org.archive.wayback.resourcestore;
+
+import java.io.File;
+import java.io.IOException;
+
+import org.archive.io.ArchiveRecord;
+import org.archive.io.arc.ARCReader;
+import org.archive.io.arc.ARCReaderFactory;
+import org.archive.io.arc.ARCRecord;
+import org.archive.io.warc.WARCReader;
+import org.archive.io.warc.WARCReaderFactory;
+import org.archive.io.warc.WARCRecord;
+import org.archive.wayback.core.Resource;
+import org.archive.wayback.exception.ResourceNotAvailableException;
+
+public class ResourceFactory {
+	
+	public static Resource getResource(File file, long offset) 
+	throws IOException, ResourceNotAvailableException {
+
+		Resource r = null;
+		String name = file.getName();
+		if(name.endsWith(LocalResourceStore.ARC_EXTENSION) || 
+				name.endsWith(LocalResourceStore.ARC_GZ_EXTENSION)) {
+
+			ARCReader reader = ARCReaderFactory.get(file);
+			ArchiveRecord rec = reader.get(offset);
+			if(!(rec instanceof ARCRecord)) {
+				throw new ResourceNotAvailableException("Bad ARCRecord format");
+			}
+			ArcResource ar = new ArcResource((ARCRecord) rec, reader);
+			ar.parseHeaders();
+			r = ar;
+
+		} else if(name.endsWith(LocalResourceStore.WARC_EXTENSION) || 
+				name.endsWith(LocalResourceStore.WARC_GZ_EXTENSION)) {
+
+			WARCReader reader = WARCReaderFactory.get(file);
+			ArchiveRecord rec = reader.get(offset);
+			if(!(rec instanceof ARCRecord)) {
+				throw new ResourceNotAvailableException("Bad ARCRecord format");
+			}
+			WarcResource wr = new WarcResource((WARCRecord) rec, reader);
+			wr.parseHeaders();
+			r = wr;
+		}		
+		
+		return r;
+	}
+}


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