From f6b200be4c8b90c26886c6cdd5809abac8c4ac15 Mon Sep 17 00:00:00 2001
From: James Moger <james.moger@gitblit.com>
Date: Wed, 27 Mar 2013 12:46:05 -0400
Subject: Reorganized to Apache Standard Directory Layout & integrated Moxie

This is a massive commit which reorganizes the entire project structure
(although it is still monolithic), removes the Build classes, and
switches to Moxie, a smarter Ant build tookit based on the original
Gitblit Build classes.

The Ant build script will likely require additional fine-tuning, but
this is big step forward.
---
 .../java/com/gitblit/utils/PatchFormatter.java     | 143 +++++++++++++++++++++
 1 file changed, 143 insertions(+)
 create mode 100644 src/main/java/com/gitblit/utils/PatchFormatter.java

(limited to 'src/main/java/com/gitblit/utils/PatchFormatter.java')

diff --git a/src/main/java/com/gitblit/utils/PatchFormatter.java b/src/main/java/com/gitblit/utils/PatchFormatter.java
new file mode 100644
index 00000000..90b3fb16
--- /dev/null
+++ b/src/main/java/com/gitblit/utils/PatchFormatter.java
@@ -0,0 +1,143 @@
+/*
+ * Copyright 2011 gitblit.com.
+ *
+ * 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 com.gitblit.utils;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.text.MessageFormat;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.eclipse.jgit.diff.DiffEntry;
+import org.eclipse.jgit.diff.DiffFormatter;
+import org.eclipse.jgit.diff.RawText;
+import org.eclipse.jgit.revwalk.RevCommit;
+
+import com.gitblit.Constants;
+
+/**
+ * A diff formatter that outputs standard patch content.
+ * 
+ * @author James Moger
+ * 
+ */
+public class PatchFormatter extends DiffFormatter {
+
+	private final OutputStream os;
+
+	private Map<String, PatchTouple> changes = new HashMap<String, PatchTouple>();
+
+	private PatchTouple currentTouple;
+
+	public PatchFormatter(OutputStream os) {
+		super(os);
+		this.os = os;
+	}
+
+	public void format(DiffEntry entry) throws IOException {
+		currentTouple = new PatchTouple();
+		changes.put(entry.getNewPath(), currentTouple);
+		super.format(entry);
+	}
+
+	@Override
+	protected void writeLine(final char prefix, final RawText text, final int cur)
+			throws IOException {
+		switch (prefix) {
+		case '+':
+			currentTouple.insertions++;
+			break;
+		case '-':
+			currentTouple.deletions++;
+			break;
+		}
+		super.writeLine(prefix, text, cur);
+	}
+
+	public String getPatch(RevCommit commit) {
+		StringBuilder patch = new StringBuilder();
+		// hard-code the mon sep 17 2001 date string.
+		// I have no idea why that is there. it seems to be a constant.
+		patch.append("From " + commit.getName() + " Mon Sep 17 00:00:00 2001" + "\n");
+		patch.append("From: " + JGitUtils.getDisplayName(commit.getAuthorIdent()) + "\n");
+		patch.append("Date: "
+				+ (new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss Z").format(new Date(commit
+						.getCommitTime() * 1000L))) + "\n");
+		patch.append("Subject: [PATCH] " + commit.getShortMessage() + "\n");
+		patch.append('\n');
+		patch.append("---");
+		int maxPathLen = 0;
+		int files = 0;
+		int insertions = 0;
+		int deletions = 0;
+		for (String path : changes.keySet()) {
+			if (path.length() > maxPathLen) {
+				maxPathLen = path.length();
+			}
+			PatchTouple touple = changes.get(path);
+			files++;
+			insertions += touple.insertions;
+			deletions += touple.deletions;
+		}
+		int columns = 60;
+		int total = insertions + deletions;
+		int unit = total / columns + (total % columns > 0 ? 1 : 0);
+		if (unit == 0) {
+			unit = 1;
+		}
+		for (String path : changes.keySet()) {
+			PatchTouple touple = changes.get(path);
+			patch.append("\n " + StringUtils.rightPad(path, maxPathLen, ' ') + " | "
+					+ StringUtils.leftPad("" + touple.total(), 4, ' ') + " "
+					+ touple.relativeScale(unit));
+		}
+		patch.append(MessageFormat.format(
+				"\n {0} files changed, {1} insertions(+), {2} deletions(-)\n\n", files, insertions,
+				deletions));
+		patch.append(os.toString());
+		patch.append("\n--\n");
+		patch.append(Constants.getGitBlitVersion());
+		return patch.toString();
+	}
+
+	/**
+	 * Class that represents the number of insertions and deletions from a
+	 * chunk.
+	 */
+	private static class PatchTouple {
+		int insertions;
+		int deletions;
+
+		int total() {
+			return insertions + deletions;
+		}
+
+		String relativeScale(int unit) {
+			int plus = insertions / unit;
+			int minus = deletions / unit;
+			StringBuilder sb = new StringBuilder();
+			for (int i = 0; i < plus; i++) {
+				sb.append('+');
+			}
+			for (int i = 0; i < minus; i++) {
+				sb.append('-');
+			}
+			return sb.toString();
+		}
+	}
+}
-- 
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