tikhomirov@13: /*
tikhomirov@19:  * Copyright (c) 2010, 2011 Artem Tikhomirov 
tikhomirov@2:  */
tikhomirov@2: package com.tmate.hgkit.ll;
tikhomirov@2: 
tikhomirov@2: /**
tikhomirov@2:  *
tikhomirov@2:  * @author artem
tikhomirov@2:  */
tikhomirov@2: public class HgManifest extends Revlog {
tikhomirov@2: 
tikhomirov@13: 	private final RevlogStream content;
tikhomirov@13: 
tikhomirov@13: 	/*package-local*/ HgManifest(HgRepository hgRepo, RevlogStream content) {
tikhomirov@2: 		super(hgRepo);
tikhomirov@13: 		this.content = content;
tikhomirov@13: 	}
tikhomirov@13: 
tikhomirov@19: 	public void walk(int start, int end, final Inspector inspector) {
tikhomirov@13: 		Revlog.Inspector insp = new Revlog.Inspector() {
tikhomirov@19: 
tikhomirov@19: 			private boolean gtg = true; // good to go
tikhomirov@19: 
tikhomirov@13: 			public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, byte[] data) {
tikhomirov@19: 				if (!gtg) {
tikhomirov@19: 					return;
tikhomirov@19: 				}
tikhomirov@19: 				gtg = gtg && inspector.begin(revisionNumber, new Nodeid(nodeid));
tikhomirov@13: 				int i;
tikhomirov@13: 				String fname = null;
tikhomirov@13: 				String flags = null;
tikhomirov@13: 				Nodeid nid = null;
tikhomirov@19: 				for (i = 0; gtg && i < actualLen; i++) {
tikhomirov@13: 					int x = i;
tikhomirov@13: 					for( ; data[i] != '\n' && i < actualLen; i++) {
tikhomirov@13: 						if (fname == null && data[i] == 0) {
tikhomirov@13: 							fname = new String(data, x, i - x);
tikhomirov@13: 							x = i+1;
tikhomirov@13: 						}
tikhomirov@13: 					}
tikhomirov@13: 					if (i < actualLen) {
tikhomirov@13: 						assert data[i] == '\n'; 
tikhomirov@13: 						int nodeidLen = i - x < 40 ? i-x : 40;
tikhomirov@13: 						nid = Nodeid.fromAscii(data, x, nodeidLen);
tikhomirov@13: 						if (nodeidLen + x < i) {
tikhomirov@13: 							// 'x' and 'l' for executable bits and symlinks?
tikhomirov@13: 							// hg --debug manifest shows 644 for each regular file in my repo
tikhomirov@13: 							flags = new String(data, x + nodeidLen, i-x-nodeidLen);
tikhomirov@13: 						}
tikhomirov@19: 						gtg = gtg && inspector.next(nid, fname, flags);
tikhomirov@13: 					}
tikhomirov@13: 					nid = null;
tikhomirov@13: 					fname = flags = null;
tikhomirov@13: 				}
tikhomirov@19: 				gtg = gtg && inspector.end(revisionNumber);
tikhomirov@13: 			}
tikhomirov@13: 		};
tikhomirov@19: 		content.iterate(start, end, true, insp);
tikhomirov@19: 	}
tikhomirov@19: 
tikhomirov@19: 	public interface Inspector {
tikhomirov@19: 		boolean begin(int revision, Nodeid nid);
tikhomirov@19: 		boolean next(Nodeid nid, String fname, String flags);
tikhomirov@19: 		boolean end(int revision);
tikhomirov@2: 	}
tikhomirov@2: }