Add GetLastCommit function

public_html/libgit/base.php

@@ -23,6 +23,8 @@ function sha1_from_bin($bin)
 	return bin2hex($bin);
 }
 
+class GitBranchNotFoundException extends Exception {}
+
 require(dirname(__FILE__) . "/class.repository.php");
 require(dirname(__FILE__) . "/class.branch.php");
 require(dirname(__FILE__) . "/class.object.php");

public_html/libgit/class.branch.php

@@ -0,0 +1,17 @@
+<?php
+class GitBranch
+{
+	public $sha = "";
+	public $repo = null;
+	
+	function __construct($repo, $sha)
+	{
+		$this->repo = $repo;
+		$this->sha = $sha;
+	}
+	
+	function GetLastCommit()
+	{
+		return $this->repo->GetObject($this->sha);
+	}
+}

public_html/libgit/class.repository.php

@@ -54,6 +54,16 @@ class GitRepository
 	
 	function GetBranch($name)
 	{
+		$filename = "{$this->path}/refs/heads/{$name}";
+		
+		if(file_exists($filename))
+		{
+			$sha = trim(file_get_contents($filename));
 			return new GitBranch($this, $sha);
 		}
+		else
+		{
+			throw new GitBranchNotFoundException("The {$name} branch does not exist.");
+		}
+	}
 }

public_html/test.php

@@ -1,10 +1,12 @@
 <?php
 require("libgit/base.php");
 
-$s = new GitRepository("/home/occupy/testrepo.git");
+$repo = new GitRepository("/home/occupy/testrepo.git");
+pretty_dump($repo->GetBranch("master")->GetLastCommit());
+
 /*pretty_dump($s->GetObject("54e03e490b1bee1c154c3545bf258cab0629ee02"));
 pretty_dump($s->GetObject("98d99489382a3541e6783bb2083554785f3eb72a"));
 pretty_dump($s->GetObject("9d8e0ba4a30f6a5d775a879c42c7de5aed4530c6"));
-pretty_dump($s->GetObject("710bfee4440517255475bf7c5454c0bdbb3b3e56"));*/
+pretty_dump($s->GetObject("710bfee4440517255475bf7c5454c0bdbb3b3e56"));
 pretty_dump($s->GetObject("ab2d7159831970ca08f2c9fc5c0fa34b17d572e9"));
-pretty_dump($s->GetObject("cdebafd9e7426d0243cfb0a4ea2116a8b97b01e7"));
+pretty_dump($s->GetObject("cdebafd9e7426d0243cfb0a4ea2116a8b97b01e7"));*/