<?php
/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
# ***** BEGIN LICENSE BLOCK *****
# This file is part of InDefero, an open source project management application.
# Copyright (C) 2008 Céondo Ltd and contributors.
#
# InDefero is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# InDefero is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
# ***** END LICENSE BLOCK ***** */
/**
* Git utils.
*
*/
class IDF_Scm_Git
{
public $repo = '';
public $mediumtree_fmt = 'commit %H%nAuthor: %an <%ae>%nTree: %T%nDate: %ai%n%n%s%n%n%b';
public function __construct($repo)
{
$this->repo = $repo;
}
/**
* Given the string describing the author from the log find the
* author in the database.
*
* @param string Author
* @return mixed Pluf_User or null
*/
public function findAuthor($author)
{
// We extract the email.
$match = array();
if (!preg_match('/<(.*)>/', $author, $match)) {
return null;
}
$sql = new Pluf_SQL('email=%s', array($match[1]));
$users = Pluf::factory('Pluf_User')->getList(array('filter'=>$sql->gen()));
return ($users->count() > 0) ? $users[0] : null;
}
/**
* Returns the URL of the git daemon.
*
* @param IDF_Project
* @return string URL
*/
public static function getRemoteAccessUrl($project)
{
return sprintf(Pluf::f('git_remote_url'), $project->shortname);
}
/**
* Returns this object correctly initialized for the project.
*
* @param IDF_Project
* @return IDF_Scm_Git
*/
public static function factory($project)
{
$rep = sprintf(Pluf::f('git_repositories'), $project->shortname);
return new IDF_Scm_Git($rep);
}
/**
* Test a given object hash.
*
* @param string Object hash.
* @param null to be svn client compatible
* @return mixed false if not valid or 'blob', 'tree', 'commit'
*/
public function testHash($hash, $dummy=null)
{
$cmd = sprintf('GIT_DIR=%s git cat-file -t %s',
escapeshellarg($this->repo),
escapeshellarg($hash));
$ret = 0; $out = array();
IDF_Scm::exec($cmd, $out, $ret);
if ($ret != 0) return false;
return trim($out[0]);
}
/**
* Given a commit hash returns an array of files in it.
*
* A file is a class with the following properties:
*
* 'perm', 'type', 'size', 'hash', 'file'
*
* @param string Commit ('HEAD')
* @param string Base folder ('')
* @return array
*/
public function filesAtCommit($commit='HEAD', $folder='')
{
// now we grab the info about this commit including its tree.
$co = $this->getCommit($commit);
if ($folder) {
// As we are limiting to a given folder, we need to find
// the tree corresponding to this folder.
$found = false;
foreach ($this->getTreeInfo($co->tree, true, $folder) as $file) {
if ($file->type == 'tree' and $file->file == $folder) {
$found = true;
$tree = $file->hash;
break;
}
}
if (!$found) {
throw new Exception(sprintf(__('Folder %1$s not found in commit %2$s.'), $folder, $commit));
}
} else {
$tree = $co->tree;
}
$res = array();
// get the raw log corresponding to this commit to find the
// origin of each file.
$rawlog = array();
$cmd = sprintf('GIT_DIR=%s git log --raw --abbrev=40 --pretty=oneline -5000 %s',
escapeshellarg($this->repo), escapeshellarg($commit));
IDF_Scm::exec($cmd, $rawlog);
// We reverse the log to be able to use a fixed efficient
// regex without back tracking.
$rawlog = implode("\n", array_reverse($rawlog));
foreach ($this->getTreeInfo($tree, false) as $file) {
// Now we grab the files in the current tree with as much
// information as possible.
$matches = array();
if ($file->type == 'blob' and preg_match('/^\:\d{6} \d{6} [0-9a-f]{40} '.$file->hash.' .*^([0-9a-f]{40})/msU',
$rawlog, $matches)) {
$fc = $this->getCommit($matches[1]);
$file->date = $fc->date;
$file->log = $fc->title;
$file->author = $fc->author;
} else if ($file->type == 'blob') {
$file->date = $co->date;
$file->log = '----';
$file->author = 'Unknown';
}
$file->fullpath = ($folder) ? $folder.'/'.$file->file : $file->file;
$res[] = $file;
}
return $res;
}
/**
* Get the tree info.
*
* @param string Tree hash
* @param bool Do we recurse in subtrees (true)
* @return array Array of file information.
*/
public function getTreeInfo($tree, $recurse=true, $folder='')
{
if ('tree' != $this->testHash($tree)) {
throw new Exception(sprintf(__('Not a valid tree: %s.'), $tree));
}
$cmd_tmpl = 'GIT_DIR=%s git ls-tree%s -t -l %s %s';
$cmd = sprintf($cmd_tmpl,
escapeshellarg($this->repo),
($recurse) ? ' -r' : '',
escapeshellarg($tree), escapeshellarg($folder));
$out = array();
$res = array();
IDF_Scm::exec($cmd, $out);
foreach ($out as $line) {
list($perm, $type, $hash, $size, $file) = preg_split('/ |\t/', $line, 5, PREG_SPLIT_NO_EMPTY);
$res[] = (object) array('perm' => $perm, 'type' => $type,
'size' => $size, 'hash' => $hash,
'file' => $file);
}
return $res;
}
/**
* Get the file info.
*
* @param string File
* @param string Commit ('HEAD')
* @return false Information
*/
public function getFileInfo($totest, $commit='HEAD')
{
$cmd_tmpl = 'GIT_DIR=%s git ls-tree -r -t -l %s';
$cmd = sprintf($cmd_tmpl,
escapeshellarg($this->repo),
escapeshellarg($commit));
$out = array();
IDF_Scm::exec($cmd, $out);
foreach ($out as $line) {
list($perm, $type, $hash, $size, $file) = preg_split('/ |\t/', $line, 5, PREG_SPLIT_NO_EMPTY);
if ($totest == $file) {
return (object) array('perm' => $perm, 'type' => $type,
'size' => $size, 'hash' => $hash,
'file' => $file);
}
}
return false;
}
/**
* Get a blob.
*
* @param string request_file_info
* @param null to be svn client compatible
* @return string Raw blob
*/
public function getBlob($request_file_info, $dummy=null)
{
return shell_exec(sprintf('GIT_DIR=%s git cat-file blob %s',
escapeshellarg($this->repo),
escapeshellarg($request_file_info->hash)));
}
/**
* Get the branches.
*
* @return array Branches.
*/
public function getBranches()
{
$out = array();
IDF_Scm::exec(sprintf('GIT_DIR=%s git branch',
escapeshellarg($this->repo)), $out);
$res = array();
foreach ($out as $b) {
$res[] = substr($b, 2);
}
return $res;
}
/**
* Get commit details.
*
* @param string Commit ('HEAD').
* @param bool Get commit diff (false).
* @return array Changes.
*/
public function getCommit($commit='HEAD', $getdiff=false)
{
if ($getdiff) {
$cmd = sprintf('GIT_DIR=%s git show --date=iso --pretty=format:%s %s',
escapeshellarg($this->repo),
"'".$this->mediumtree_fmt."'",
escapeshellarg($commit));
} else {
$cmd = sprintf('GIT_DIR=%s git log -1 --date=iso --pretty=format:%s %s',
escapeshellarg($this->repo),
"'".$this->mediumtree_fmt."'",
escapeshellarg($commit));
}
$out = array();
IDF_Scm::exec($cmd, $out);
$log = array();
$change = array();
$inchange = false;
foreach ($out as $line) {
if (!$inchange and 0 === strpos($line, 'diff --git a')) {
$inchange = true;
}
if ($inchange) {
$change[] = $line;
} else {
$log[] = $line;
}
}
$out = self::parseLog($log, 4);
$out[0]->changes = implode("\n", $change);
return $out[0];
}
/**
* Check if a commit is big.
*
* @param string Commit ('HEAD')
* @return bool The commit is big
*/
public function isCommitLarge($commit='HEAD')
{
$cmd = sprintf('GIT_DIR=%s git log --numstat -1 --pretty=format:%s %s',
escapeshellarg($this->repo),
"'commit %H%n'",
escapeshellarg($commit));
$out = array();
IDF_Scm::exec($cmd, $out);
$affected = count($out) - 2;
$added = 0;
$removed = 0;
$c=0;
foreach ($out as $line) {
$c++;
if ($c < 3) {
continue;
}
list($a, $r, $f) = preg_split("/[\s]+/", $line, 3, PREG_SPLIT_NO_EMPTY);
$added+=$a;
$removed+=$r;
}
return ($affected > 100 or ($added + $removed) > 20000);
}
/**
* Get latest changes.
*
* @param string Commit ('HEAD').
* @param int Number of changes (10).
* @return array Changes.
*/
public function getChangeLog($commit='HEAD', $n=10)
{
if ($n === null) $n = '';
else $n = ' -'.$n;
$cmd = sprintf('GIT_DIR=%s git log%s --date=iso --pretty=format:\'%s\' %s',
escapeshellarg($this->repo), $n, $this->mediumtree_fmt,
escapeshellarg($commit));
$out = array();
IDF_Scm::exec($cmd, $out);
return self::parseLog($out, 4);
}
/**
* Parse the log lines of a --pretty=medium log output.
*
* @param array Lines.
* @param int Number of lines in the headers (3)
* @return array Change log.
*/
public static function parseLog($lines, $hdrs=3)
{
$res = array();
$c = array();
$hdrs += 2;
$inheads = true;
$next_is_title = false;
foreach ($lines as $line) {
if (preg_match('/^commit (\w{40})$/', $line)) {
if (count($c) > 0) {
$c['full_message'] = trim($c['full_message']);
$res[] = (object) $c;
}
$c = array();
$c['commit'] = trim(substr($line, 7, 40));
$c['full_message'] = '';
$inheads = true;
$next_is_title = false;
continue;
}
if ($next_is_title) {
$c['title'] = trim($line);
$next_is_title = false;
continue;
}
$match = array();
if ($inheads and preg_match('/(\S+)\s*:\s*(.*)/', $line, $match)) {
$match[1] = strtolower($match[1]);
$c[$match[1]] = trim($match[2]);
if ($match[1] == 'date') {
$c['date'] = gmdate('Y-m-d H:i:s', strtotime($match[2]));
}
continue;
}
if ($inheads and !$next_is_title and $line == '') {
$next_is_title = true;
$inheads = false;
}
if (!$inheads) {
$c['full_message'] .= trim($line)."\n";
continue;
}
}
$c['full_message'] = trim($c['full_message']);
$res[] = (object) $c;
return $res;
}
/**
* Generate the command to create a zip archive at a given commit.
*
* @param string Commit
* @param string Prefix ('git-repo-dump')
* @return string Command
*/
public function getArchiveCommand($commit, $prefix='git-repo-dump/')
{
return sprintf('GIT_DIR=%s git archive --format=zip --prefix=%s %s',
escapeshellarg($this->repo),
escapeshellarg($prefix),
escapeshellarg($commit));
}
}
accountmanagementengine