--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hg4j/src/main/java/org/tmatesoft/hg/repo/HgManifest.java	Tue May 10 10:52:53 2011 +0200
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2010-2011 TMate Software Ltd
+ *  
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * For information on how to redistribute this software under
+ * the terms of a license other than GNU General Public License
+ * contact TMate Software at support@hg4j.com
+ */
+package org.tmatesoft.hg.repo;
+
+import java.io.IOException;
+
+import org.tmatesoft.hg.core.HgBadStateException;
+import org.tmatesoft.hg.core.Nodeid;
+import org.tmatesoft.hg.internal.DataAccess;
+import org.tmatesoft.hg.internal.Pool;
+import org.tmatesoft.hg.internal.RevlogStream;
+
+
+/**
+ *
+ * @author Artem Tikhomirov
+ * @author TMate Software Ltd.
+ */
+public class HgManifest extends Revlog {
+
+	/*package-local*/ HgManifest(HgRepository hgRepo, RevlogStream content) {
+		super(hgRepo, content);
+	}
+
+	public void walk(int start, int end, final Inspector inspector) {
+		if (inspector == null) {
+			throw new IllegalArgumentException();
+		}
+		content.iterate(start, end, true, new ManifestParser(inspector));
+	}
+
+	public interface Inspector {
+		boolean begin(int revision, Nodeid nid);
+		boolean next(Nodeid nid, String fname, String flags);
+		boolean end(int revision);
+	}
+
+	private static class ManifestParser implements RevlogStream.Inspector {
+		private boolean gtg = true; // good to go
+		private final Inspector inspector;
+		private final Pool<Nodeid> nodeidPool;
+		private final Pool<String> fnamePool;
+		private final Pool<String> flagsPool;
+
+		public ManifestParser(Inspector delegate) {
+			assert delegate != null;
+			inspector = delegate;
+			nodeidPool = new Pool<Nodeid>();
+			fnamePool = new Pool<String>();
+			flagsPool = new Pool<String>();
+		}
+
+		public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, DataAccess da) {
+			if (!gtg) {
+				return;
+			}
+			try {
+				gtg = gtg && inspector.begin(revisionNumber, new Nodeid(nodeid, true));
+				int i;
+				String fname = null;
+				String flags = null;
+				Nodeid nid = null;
+				byte[] data = da.byteArray();
+				for (i = 0; gtg && i < actualLen; i++) {
+					int x = i;
+					for( ; data[i] != '\n' && i < actualLen; i++) {
+						if (fname == null && data[i] == 0) {
+							fname = fnamePool.unify(new String(data, x, i - x));
+							x = i+1;
+						}
+					}
+					if (i < actualLen) {
+						assert data[i] == '\n'; 
+						int nodeidLen = i - x < 40 ? i-x : 40;
+						nid = nodeidPool.unify(Nodeid.fromAscii(data, x, nodeidLen));
+						if (nodeidLen + x < i) {
+							// 'x' and 'l' for executable bits and symlinks?
+							// hg --debug manifest shows 644 for each regular file in my repo
+							flags = flagsPool.unify(new String(data, x + nodeidLen, i-x-nodeidLen));
+						}
+						gtg = gtg && inspector.next(nid, fname, flags);
+					}
+					nid = null;
+					fname = flags = null;
+				}
+				gtg = gtg && inspector.end(revisionNumber);
+			} catch (IOException ex) {
+				throw new HgBadStateException(ex);
+			}
+		}
+	}
+}