From 65c530361cdbebe3dbd814d33852ab5ed1197b34 Mon Sep 17 00:00:00 2001
From: Charles O'Farrell <charleso@charleso.org>
Date: Sat, 9 Aug 2008 16:04:28 +1000
Subject: [PATCH] jgit: create a branch command

This command lists the existing branches, highlighting the current branch with an asterisk. Currently only the -r and -a options are supported.

Signed-off-by: Charles O'Farrell <charleso@charleso.org>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
---
 .../services/org.spearce.jgit.pgm.TextBuiltin      |  1 +
 .../src/org/spearce/jgit/pgm/Branch.java           | 83 ++++++++++++++++++++++
 2 files changed, 84 insertions(+)
 create mode 100644 org.spearce.jgit.pgm/src/org/spearce/jgit/pgm/Branch.java

diff --git a/org.spearce.jgit.pgm/src/META-INF/services/org.spearce.jgit.pgm.TextBuiltin b/org.spearce.jgit.pgm/src/META-INF/services/org.spearce.jgit.pgm.TextBuiltin
index 1ff5a305..734de3d4 100644
--- a/org.spearce.jgit.pgm/src/META-INF/services/org.spearce.jgit.pgm.TextBuiltin
+++ b/org.spearce.jgit.pgm/src/META-INF/services/org.spearce.jgit.pgm.TextBuiltin
@@ -1,3 +1,4 @@
+org.spearce.jgit.pgm.Branch
 org.spearce.jgit.pgm.DiffTree
 org.spearce.jgit.pgm.Fetch
 org.spearce.jgit.pgm.Glog
diff --git a/org.spearce.jgit.pgm/src/org/spearce/jgit/pgm/Branch.java b/org.spearce.jgit.pgm/src/org/spearce/jgit/pgm/Branch.java
new file mode 100644
index 00000000..8415fe24
--- /dev/null
+++ b/org.spearce.jgit.pgm/src/org/spearce/jgit/pgm/Branch.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2007, Charles O'Farrell <charleso@charleso.org>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Git Development Community nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package org.spearce.jgit.pgm;
+
+import java.util.Map;
+import java.util.TreeSet;
+
+import org.kohsuke.args4j.Option;
+import org.spearce.jgit.lib.Constants;
+import org.spearce.jgit.lib.Ref;
+
+@Command(common = true, usage = "List, create, or delete branches")
+class Branch extends TextBuiltin {
+
+	@Option(name = "--remote", aliases = { "-r" }, usage = "act on remote-tracking branches")
+	boolean remote = false;
+
+	@Option(name = "--all", aliases = { "-a" }, usage = "list both remote-tracking and local branches")
+	boolean all = false;
+
+	@Override
+	protected void run() throws Exception {
+		Map<String, Ref> refs = db.getAllRefs();
+		Ref head = refs.get(Constants.HEAD);
+		// This can happen if HEAD is stillborn
+		if (head != null) {
+			String current = head.getName();
+			if (current.equals(Constants.HEAD))
+				printHead("(no branch)", true);
+			for (String ref : new TreeSet<String>(refs.keySet())) {
+				if (isHead(ref))
+					printHead(ref, current.equals(ref));
+			}
+		}
+	}
+
+	private boolean isHead(String key) {
+		return (all || !remote) && key.startsWith(Constants.HEADS_PREFIX)
+				|| (all || remote) && key.startsWith(Constants.REMOTES_PREFIX);
+	}
+
+	private void printHead(String ref, boolean isCurrent) {
+		out.print(isCurrent ? '*' : ' ');
+		out.print(' ');
+		ref = ref.substring(ref.indexOf('/', 5) + 1);
+		out.println(ref);
+	}
+}
-- 
2.11.4.GIT