From 9bc17d16ea48a7978b198126d346828b1d24fe4e Mon Sep 17 00:00:00 2001
From: James Moger <james.moger@gitblit.com>
Date: Mon, 18 Apr 2011 22:29:20 -0400
Subject: [PATCH] Color-coded change type indicator with tooltip for changed paths.

---
 src/com/gitblit/utils/JGitUtils.java |  436 ++++++++++++++++++++++++++++++++++++++++++++++++++----
 1 files changed, 402 insertions(+), 34 deletions(-)

diff --git a/src/com/gitblit/utils/JGitUtils.java b/src/com/gitblit/utils/JGitUtils.java
index 31b5677..b126768 100644
--- a/src/com/gitblit/utils/JGitUtils.java
+++ b/src/com/gitblit/utils/JGitUtils.java
@@ -6,6 +6,7 @@
 import java.io.InputStream;
 import java.io.RandomAccessFile;
 import java.text.DateFormat;
+import java.text.ParseException;
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
 import java.util.Collections;
@@ -15,8 +16,14 @@
 import java.util.Map;
 import java.util.Set;
 
-import org.eclipse.jgit.api.Git;
+import org.eclipse.jgit.diff.DiffEntry;
+import org.eclipse.jgit.diff.DiffFormatter;
+import org.eclipse.jgit.diff.RawTextComparator;
+import org.eclipse.jgit.diff.DiffEntry.ChangeType;
 import org.eclipse.jgit.errors.ConfigInvalidException;
+import org.eclipse.jgit.errors.IncorrectObjectTypeException;
+import org.eclipse.jgit.errors.MissingObjectException;
+import org.eclipse.jgit.errors.StopWalkException;
 import org.eclipse.jgit.lib.AnyObjectId;
 import org.eclipse.jgit.lib.Constants;
 import org.eclipse.jgit.lib.FileMode;
@@ -31,15 +38,22 @@
 import org.eclipse.jgit.revwalk.RevObject;
 import org.eclipse.jgit.revwalk.RevTree;
 import org.eclipse.jgit.revwalk.RevWalk;
+import org.eclipse.jgit.revwalk.filter.RevFilter;
 import org.eclipse.jgit.treewalk.TreeWalk;
+import org.eclipse.jgit.treewalk.filter.AndTreeFilter;
 import org.eclipse.jgit.treewalk.filter.PathFilter;
 import org.eclipse.jgit.treewalk.filter.PathFilterGroup;
+import org.eclipse.jgit.treewalk.filter.TreeFilter;
+import org.eclipse.jgit.util.io.DisabledOutputStream;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import com.gitblit.wicket.models.Metric;
 import com.gitblit.wicket.models.PathModel;
+import com.gitblit.wicket.models.PathModel.PathChangeModel;
 import com.gitblit.wicket.models.RefModel;
+import com.gitblit.wicket.models.TicketModel;
+import com.gitblit.wicket.models.TicketModel.Comment;
 
 public class JGitUtils {
 
@@ -92,12 +106,15 @@
 		return getCommitDate(commit);
 	}
 
-	public static RevCommit getCommit(Repository r, String commitId) {
+	public static RevCommit getCommit(Repository r, String objectId) {
 		RevCommit commit = null;
 		try {
-			ObjectId objectId = r.resolve(commitId);
+			if (objectId == null || objectId.trim().length() == 0) {
+				objectId = Constants.HEAD;
+			}
+			ObjectId object = r.resolve(objectId);
 			RevWalk walk = new RevWalk(r);
-			RevCommit rev = walk.parseCommit(objectId);
+			RevCommit rev = walk.parseCommit(object);
 			commit = rev;
 			walk.dispose();
 		} catch (Throwable t) {
@@ -199,8 +216,8 @@
 		return new String(getRawContent(r, (RevBlob) obj));
 	}
 
-	public static List<PathModel> getFilesInPath(Repository r, String basePath, String commitId) {
-		RevCommit commit = getCommit(r, commitId);
+	public static List<PathModel> getFilesInPath(Repository r, String basePath, String objectId) {
+		RevCommit commit = getCommit(r, objectId);
 		return getFilesInPath(r, basePath, commit);
 	}
 
@@ -241,29 +258,166 @@
 		return list;
 	}
 
-	public static List<PathModel> getCommitChangedPaths(Repository r, String commitId) {
+	public static List<PathChangeModel> getFilesInCommit(Repository r, String commitId) {
 		RevCommit commit = getCommit(r, commitId);
-		return getCommitChangedPaths(r, commit);
+		return getFilesInCommit(r, commit);
 	}
 
-	public static List<PathModel> getCommitChangedPaths(Repository r, RevCommit commit) {
-		List<PathModel> list = new ArrayList<PathModel>();
-		final TreeWalk walk = new TreeWalk(r);
-		walk.setRecursive(false);
+	public static List<PathChangeModel> getFilesInCommit(Repository r, RevCommit commit) {
+		List<PathChangeModel> list = new ArrayList<PathChangeModel>();
 		try {
-			walk.addTree(commit.getTree());
-			while (walk.next()) {
-				list.add(getPathModel(walk, null, commit));
-			}
+			final RevWalk rw = new RevWalk(r);
+			RevCommit parent = rw.parseCommit(commit.getParent(0).getId());
+			RevTree parentTree = parent.getTree();
+			RevTree commitTree = commit.getTree();
 
-		} catch (IOException e) {
-			LOGGER.error("Failed to get files for commit " + commit.getName(), e);
-		} finally {
-			if (walk != null) {
-				walk.release();
+			final TreeWalk walk = new TreeWalk(r);
+			walk.reset();
+			walk.setRecursive(true);
+			walk.addTree(parentTree);
+			walk.addTree(commitTree);
+			walk.setFilter(TreeFilter.ANY_DIFF);
+
+			RawTextComparator cmp = RawTextComparator.DEFAULT;
+			DiffFormatter df = new DiffFormatter(DisabledOutputStream.INSTANCE);
+			df.setRepository(r);
+			df.setDiffComparator(cmp);
+			df.setDetectRenames(true);
+			List<DiffEntry> diffs = df.scan(parentTree, commitTree);
+			for (DiffEntry diff : diffs) {
+				if (diff.getChangeType().equals(ChangeType.DELETE)) {
+					list.add(new PathChangeModel(diff.getOldPath(), diff.getOldPath(), 0, diff.getNewMode().getBits(), commit.getId().getName(), diff.getChangeType()));
+				} else {
+					list.add(new PathChangeModel(diff.getNewPath(), diff.getNewPath(), 0, diff.getNewMode().getBits(), commit.getId().getName(), diff.getChangeType()));
+				}
 			}
+		} catch (Throwable t) {
+			LOGGER.error("failed to determine files in commit!", t);
 		}
 		return list;
+	}
+
+	public static String getCommitDiff(Repository r, RevCommit commit, boolean outputHtml) {
+		return getCommitDiff(r, null, commit, null, outputHtml);
+	}
+
+	public static String getCommitDiff(Repository r, RevCommit commit, String path, boolean outputHtml) {
+		return getCommitDiff(r, null, commit, path, outputHtml);
+	}
+
+	public static String getCommitDiff(Repository r, RevCommit baseCommit, RevCommit commit, boolean outputHtml) {
+		return getCommitDiff(r, baseCommit, commit, null, outputHtml);
+	}
+
+	public static String getCommitDiff(Repository r, RevCommit baseCommit, RevCommit commit, String path, boolean outputHtml) {
+		try {
+			RevTree baseTree;
+			if (baseCommit == null) {
+				final RevWalk rw = new RevWalk(r);
+				RevCommit parent = rw.parseCommit(commit.getParent(0).getId());
+				rw.dispose();
+				baseTree = parent.getTree();
+			} else {
+				baseTree = baseCommit.getTree();
+			}
+
+			RevTree commitTree = commit.getTree();
+
+			final TreeWalk walk = new TreeWalk(r);
+			walk.reset();
+			walk.setRecursive(true);
+			walk.addTree(baseTree);
+			walk.addTree(commitTree);
+			walk.setFilter(TreeFilter.ANY_DIFF);
+
+			final ByteArrayOutputStream os = new ByteArrayOutputStream();
+			RawTextComparator cmp = RawTextComparator.DEFAULT;
+			DiffFormatter df;
+			if (outputHtml) {
+				df = new HtmlDiffFormatter(os);
+			} else {
+				df = new DiffFormatter(os);
+			}
+			df.setRepository(r);
+			df.setDiffComparator(cmp);
+			df.setDetectRenames(true);
+			List<DiffEntry> diffs = df.scan(baseTree, commitTree);
+			if (path != null && path.length() > 0) {
+				for (DiffEntry diff : diffs) {
+					if (diff.getNewPath().equalsIgnoreCase(path)) {
+						df.format(diff);
+						break;
+					}
+				}
+			} else {
+				df.format(diffs);
+			}
+			String diff;
+			if (outputHtml) {
+				// workaround for complex private methods in DiffFormatter
+				diff = ((HtmlDiffFormatter) df).getHtml();
+			} else {
+				diff = os.toString();
+			}
+			df.flush();
+			return diff;
+		} catch (Throwable t) {
+			LOGGER.error("failed to generate commit diff!", t);
+		}
+		return null;
+	}
+
+	public static String getCommitPatch(Repository r, RevCommit commit) {
+		return getCommitPatch(r, commit);
+	}
+
+	public static String getCommitPatch(Repository r, RevCommit commit, String path) {
+		return getCommitPatch(r, null, commit, path);
+	}
+
+	public static String getCommitPatch(Repository r, RevCommit baseCommit, RevCommit commit, String path) {
+		try {
+			RevTree baseTree;
+			if (baseCommit == null) {
+				final RevWalk rw = new RevWalk(r);
+				RevCommit parent = rw.parseCommit(commit.getParent(0).getId());
+				baseTree = parent.getTree();
+			} else {
+				baseTree = baseCommit.getTree();
+			}
+			RevTree commitTree = commit.getTree();
+
+			final TreeWalk walk = new TreeWalk(r);
+			walk.reset();
+			walk.setRecursive(true);
+			walk.addTree(baseTree);
+			walk.addTree(commitTree);
+			walk.setFilter(TreeFilter.ANY_DIFF);
+
+			final ByteArrayOutputStream os = new ByteArrayOutputStream();
+			RawTextComparator cmp = RawTextComparator.DEFAULT;
+			PatchFormatter df = new PatchFormatter(os);
+			df.setRepository(r);
+			df.setDiffComparator(cmp);
+			df.setDetectRenames(true);
+			List<DiffEntry> diffs = df.scan(baseTree, commitTree);
+			if (path != null && path.length() > 0) {
+				for (DiffEntry diff : diffs) {
+					if (diff.getNewPath().equalsIgnoreCase(path)) {
+						df.format(diff);
+						break;
+					}
+				}
+			} else {
+				df.format(diffs);
+			}
+			String diff = df.getPatch(commit);
+			df.flush();
+			return diff;
+		} catch (Throwable t) {
+			LOGGER.error("failed to generate commit diff!", t);
+		}
+		return null;
 	}
 
 	private static PathModel getPathModel(TreeWalk walk, String basePath, RevCommit commit) {
@@ -283,7 +437,7 @@
 				size = walk.getObjectReader().getObjectSize(walk.getObjectId(0), Constants.OBJ_BLOB);
 			}
 		} catch (Throwable t) {
-			LOGGER.error("Failed to retrieve blobl size", t);
+			LOGGER.error("Failed to retrieve blob size", t);
 		}
 		return new PathModel(name, walk.getPathString(), size, walk.getFileMode(0).getBits(), commit.getName());
 	}
@@ -313,16 +467,122 @@
 	}
 
 	public static List<RevCommit> getRevLog(Repository r, int maxCount) {
+		return getRevLog(r, Constants.HEAD, 0, maxCount);
+	}
+
+	public static List<RevCommit> getRevLog(Repository r, String objectId, int offset, int maxCount) {
+		return getRevLog(r, objectId, null, offset, maxCount);
+	}
+
+	public static List<RevCommit> getRevLog(Repository r, String objectId, String path, int offset, int maxCount) {
 		List<RevCommit> list = new ArrayList<RevCommit>();
 		try {
-			Git git = new Git(r);
-			Iterable<RevCommit> revlog = git.log().call();
-			for (RevCommit rev : revlog) {
-				list.add(rev);
-				if (maxCount > 0 && list.size() == maxCount) {
-					break;
+			if (objectId == null || objectId.trim().length() == 0) {
+				objectId = Constants.HEAD;
+			}
+			RevWalk walk = new RevWalk(r);
+			ObjectId object = r.resolve(objectId);
+			walk.markStart(walk.parseCommit(object));
+			if (!StringUtils.isEmpty(path)) {
+				TreeFilter filter = AndTreeFilter.create(PathFilterGroup.createFromStrings(Collections.singleton(path)), TreeFilter.ANY_DIFF);
+				walk.setTreeFilter(filter);
+			}
+			Iterable<RevCommit> revlog = walk;
+			if (offset > 0) {
+				int count = 0;
+				for (RevCommit rev : revlog) {
+					count++;
+					if (count > offset) {
+						list.add(rev);
+						if (maxCount > 0 && list.size() == maxCount) {
+							break;
+						}
+					}
+				}
+			} else {
+				for (RevCommit rev : revlog) {
+					list.add(rev);
+					if (maxCount > 0 && list.size() == maxCount) {
+						break;
+					}
 				}
 			}
+			walk.dispose();
+		} catch (Throwable t) {
+			LOGGER.error("Failed to determine last change", t);
+		}
+		return list;
+	}
+
+	public static enum SearchType {
+		AUTHOR, COMMITTER, COMMIT;
+
+		public static SearchType forName(String name) {
+			for (SearchType type : values()) {
+				if (type.name().equalsIgnoreCase(name)) {
+					return type;
+				}
+			}
+			return null;
+		}
+		
+		public String toString() {
+			return name().toLowerCase();
+		}
+	}
+
+	public static List<RevCommit> searchRevlogs(Repository r, String objectId, String value, final SearchType type, int offset, int maxCount) {
+		final String lcValue = value.toLowerCase();
+		List<RevCommit> list = new ArrayList<RevCommit>();
+		try {
+			if (objectId == null || objectId.trim().length() == 0) {
+				objectId = Constants.HEAD;
+			}
+			RevWalk walk = new RevWalk(r);
+			walk.setRevFilter(new RevFilter() {
+
+				@Override
+				public RevFilter clone() {
+					return this;
+				}
+
+				@Override
+				public boolean include(RevWalk walker, RevCommit commit) throws StopWalkException, MissingObjectException, IncorrectObjectTypeException, IOException {
+					switch (type) {
+					case AUTHOR:
+						return (commit.getAuthorIdent().getName().toLowerCase().indexOf(lcValue) > -1) || (commit.getAuthorIdent().getEmailAddress().toLowerCase().indexOf(lcValue) > -1);
+					case COMMITTER:
+						return (commit.getCommitterIdent().getName().toLowerCase().indexOf(lcValue) > -1)|| (commit.getCommitterIdent().getEmailAddress().toLowerCase().indexOf(lcValue) > -1);
+					case COMMIT:
+						return commit.getFullMessage().toLowerCase().indexOf(lcValue) > -1;
+					}
+					return false;
+				}
+
+			});
+			ObjectId object = r.resolve(objectId);
+			walk.markStart(walk.parseCommit(object));
+			Iterable<RevCommit> revlog = walk;
+			if (offset > 0) {
+				int count = 0;
+				for (RevCommit rev : revlog) {
+					count++;
+					if (count > offset) {
+						list.add(rev);
+						if (maxCount > 0 && list.size() == maxCount) {
+							break;
+						}
+					}
+				}
+			} else {
+				for (RevCommit rev : revlog) {
+					list.add(rev);
+					if (maxCount > 0 && list.size() == maxCount) {
+						break;
+					}
+				}
+			}
+			walk.dispose();
 		} catch (Throwable t) {
 			LOGGER.error("Failed to determine last change", t);
 		}
@@ -333,8 +593,12 @@
 		return getRefs(r, Constants.R_TAGS, maxCount);
 	}
 
-	public static List<RefModel> getHeads(Repository r, int maxCount) {
+	public static List<RefModel> getLocalBranches(Repository r, int maxCount) {
 		return getRefs(r, Constants.R_HEADS, maxCount);
+	}
+
+	public static List<RefModel> getRemoteBranches(Repository r, int maxCount) {
+		return getRefs(r, Constants.R_REMOTES, maxCount);
 	}
 
 	public static List<RefModel> getRefs(Repository r, String refs, int maxCount) {
@@ -349,7 +613,7 @@
 			Collections.sort(list);
 			Collections.reverse(list);
 			if (maxCount > 0 && list.size() > maxCount) {
-				list = list.subList(0, maxCount);
+				list = new ArrayList<RefModel>(list.subList(0, maxCount));
 			}
 		} catch (IOException e) {
 			LOGGER.error("Failed to retrieve " + refs, e);
@@ -430,11 +694,14 @@
 	}
 
 	public static List<Metric> getDateMetrics(Repository r) {
+		final List<RefModel> tags = getTags(r, -1);
 		final Map<String, Metric> map = new HashMap<String, Metric>();
 		try {
 			DateFormat df = new SimpleDateFormat("yyyy-MM");
-			Git git = new Git(r);
-			Iterable<RevCommit> revlog = git.log().call();
+			RevWalk walk = new RevWalk(r);
+			ObjectId object = r.resolve(Constants.HEAD);
+			walk.markStart(walk.parseCommit(object));
+			Iterable<RevCommit> revlog = walk;
 			for (RevCommit rev : revlog) {
 				Date d = getCommitDate(rev);
 				String p = df.format(d);
@@ -448,9 +715,110 @@
 		List<String> keys = new ArrayList<String>(map.keySet());
 		Collections.sort(keys);
 		List<Metric> metrics = new ArrayList<Metric>();
-		for (String key:keys) {
+		for (String key : keys) {
 			metrics.add(map.get(key));
-		}		
+		}
 		return metrics;
 	}
+
+	public static RefModel getTicketsBranch(Repository r) {
+		RefModel ticgitBranch = null;
+		try {
+			// search for ticgit branch in local heads
+			for (RefModel ref : getLocalBranches(r, -1)) {
+				if (ref.getDisplayName().endsWith("ticgit")) {
+					ticgitBranch = ref;
+					break;
+				}
+			}
+
+			// search for ticgit branch in remote heads
+			if (ticgitBranch == null) {
+				for (RefModel ref : getRemoteBranches(r, -1)) {
+					if (ref.getDisplayName().endsWith("ticgit")) {
+						ticgitBranch = ref;
+						break;
+					}
+				}
+			}
+		} catch (Throwable t) {
+			LOGGER.error("Failed to find ticgit branch!", t);
+		}
+		return ticgitBranch;
+	}
+
+	public static List<TicketModel> getTickets(Repository r) {
+		RefModel ticgitBranch = getTicketsBranch(r);
+		List<PathModel> paths = getFilesInPath(r, null, ticgitBranch.getCommit());
+		List<TicketModel> tickets = new ArrayList<TicketModel>();
+		for (PathModel ticketFolder : paths) {
+			if (ticketFolder.isTree()) {
+				try {
+					TicketModel t = new TicketModel(ticketFolder.name);
+					readTicketContents(r, ticgitBranch, t);
+					tickets.add(t);
+				} catch (Throwable t) {
+					LOGGER.error("Failed to get a ticket!", t);
+				}
+			}
+		}
+		Collections.sort(tickets);
+		Collections.reverse(tickets);
+		return tickets;
+	}
+
+	public static TicketModel getTicket(Repository r, String ticketFolder) {
+		RefModel ticketsBranch = getTicketsBranch(r);
+		if (ticketsBranch != null) {
+			try {
+				TicketModel ticket = new TicketModel(ticketFolder);
+				readTicketContents(r, ticketsBranch, ticket);
+				return ticket;
+			} catch (Throwable t) {
+				LOGGER.error("Failed to get ticket " + ticketFolder, t);
+			}
+		}
+		return null;
+	}
+
+	private static void readTicketContents(Repository r, RefModel ticketsBranch, TicketModel ticket) {
+		List<PathModel> ticketFiles = getFilesInPath(r, ticket.name, ticketsBranch.getCommit());
+		for (PathModel file : ticketFiles) {
+			String content = getRawContentAsString(r, ticketsBranch.getCommit(), file.path).trim();
+			if (file.name.equals("TICKET_ID")) {
+				ticket.id = content;
+			} else if (file.name.equals("TITLE")) {
+				ticket.title = content;
+			} else {
+				String[] chunks = file.name.split("_");
+				if (chunks[0].equals("ASSIGNED")) {
+					ticket.handler = content;
+				} else if (chunks[0].equals("COMMENT")) {
+					try {
+						Comment c = new Comment(file.name, content);
+						ticket.comments.add(c);
+					} catch (ParseException e) {
+						e.printStackTrace();
+					}
+				} else if (chunks[0].equals("TAG")) {
+					if (content.startsWith("TAG_")) {
+						ticket.tags.add(content.substring(4));
+					} else {
+						ticket.tags.add(content);
+					}
+				} else if (chunks[0].equals("STATE")) {
+					ticket.state = content;
+				}
+			}
+		}
+		Collections.sort(ticket.comments);
+	}
+
+	public static String getTicketContent(Repository r, String filePath) {
+		RefModel ticketsBranch = getTicketsBranch(r);
+		if (ticketsBranch != null) {
+			return getRawContentAsString(r, ticketsBranch.getCommit(), filePath);
+		}
+		return "";
+	}
 }

--
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