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getTip() by tag #13

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getTip() by tag #13

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d0698a2
allow getTip() by tag
locked May 23, 2013
431f208
add getTag() function
locked May 23, 2013
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28 changes: 25 additions & 3 deletions lib/git.class.php
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Original file line number Diff line number Diff line change
Expand Up @@ -402,15 +402,37 @@ public function getObject($name)
return $object;
}

/**
* @brief Look up a tag.
*
* @param $commit_obj (GitObject) The commit to look up.
* @returns (string) The commit of the tag.
*/
public function getTag($commit_obj)
{
$commit = sha1_hex($commit_obj->getName());
$dir = $this->dir.'/refs/tags';
$d = opendir($dir);
while( ($file = readdir($d))!==false ) {
$fn = $dir."/".$file;
if( is_file($fn) ) {
if( $commit==trim(file_get_contents($fn)) ) {
return $file;
}
}
}
return "";
}

/**
* @brief Look up a branch.
*
* @param $branch (string) The branch to look up, defaulting to @em master.
* @returns (string) The tip of the branch (binary sha1).
*/
public function getTip($branch='master')
public function getTip($tip='master', $is_tag=false)
{
$subpath = sprintf('refs/heads/%s', $branch);
$subpath = sprintf('refs/%s/%s', $is_tag?"tags":"heads", $tip);
$path = sprintf('%s/%s', $this->dir, $subpath);
if (file_exists($path))
return sha1_bin(file_get_contents($path));
Expand All @@ -432,7 +454,7 @@ public function getTip($branch='master')
if ($head !== NULL)
return $head;
}
throw new Exception(sprintf('no such branch: %s', $branch));
throw new Exception(sprintf('no such %s: %s', $is_tag?"tag":"branch", $tip));
}
}