<?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 extends IDF_Scm
{
public $mediumtree_fmt = 'commit %H%nAuthor: %an <%ae>%nTree: %T%nDate: %ai%n%n%s%n%n%b';
/* ============================================== *
* *
* Common Methods Implemented By All The SCMs *
* *
* ============================================== */
public function isAvailable()
{
try {
$this->getBranches();
} catch (IDF_Scm_Exception $e) {
return false;
}
return true;
}
public function getBranches()
{
if (isset($this->cache['branches'])) {
return $this->cache['branches'];
}
$cmd = Pluf::f('idf_exec_cmd_prefix', '')
.sprintf('GIT_DIR=%s '.Pluf::f('git_path', 'git').' branch',
escapeshellarg($this->repo));
exec($cmd, $out, $return);
if ($return != 0) {
throw new IDF_Scm_Exception(sprintf($this->error_tpl,
$cmd, $return,
implode("\n", $out)));
}
$res = array();
foreach ($out as $b) {
$res[] = substr($b, 2);
}
$this->cache['branches'] = $res;
return $res;
}
public function getMainBranch()
{
return 'master';
}
/**
* Git "tree" is not the same as the tree we get here.
*
* With git each commit object stores a related tree object. This
* tree is basically providing what is in the given folder at the
* given commit. It looks something like that:
*
* <pre>
* 100644 blob bcd155e609c51b4651aab9838b270cce964670af AUTHORS
* 100644 blob 87b44c5c7df3cc90c031317c1ac8efcfd8a13631 COPYING
* 100644 blob 2a0f899cbfe33ea755c343b06a13d7de6c22799f INSTALL.mdtext
* 040000 tree 2f469c4c5318aa4ad48756874373370f6112f77b doc
* 040000 tree 911e0bd2706f0069b04744d6ef41353faf06a0a7 logo
* </pre>
*
* You can then follow what is in the given folder (let say doc)
* by using the hash.
*
* This means that you will have not to confuse the git tree and
* the output tree in the following method.
*
* @see http://www.kernel.org/pub/software/scm/git/docs/git-ls-tree.html
*
*/
public function getTree($commit, $folder='/', $branch=null)
{
$folder = ($folder == '/') ? '' : $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.
$tinfo = $this->getTreeInfo($commit, $folder);
if (isset($tinfo[0]) and $tinfo[0]->type == 'tree') {
$tree = $tinfo[0]->hash;
} else {
throw new Exception(sprintf(__('Folder %1$s not found in commit %2$s.'), $folder, $commit));
}
} else {
$tree = $co->tree;
}
$res = array();
foreach ($this->getTreeInfo($tree) as $file) {
// Now we grab the files in the current tree with as much
// information as possible.
if ($file->type == 'blob') {
$file->date = $co->date;
$file->log = '----';
$file->author = 'Unknown';
}
$file->fullpath = ($folder) ? $folder.'/'.$file->file : $file->file;
if ($file->type == 'commit') {
// We have a submodule
$file = $this->getSubmodule($file, $commit);
}
$res[] = $file;
}
// Grab the details for each blob and return the list.
return $this->getTreeDetails($res);
}
/**
* 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'), $project->shortname);
}
/**
* Returns the URL for SSH access
*
* @param IDF_Project
* @return string URL
*/
public static function getWriteRemoteAccessUrl($project)
{
return sprintf(Pluf::f('git_write_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, $project);
}
/**
* Test a given object hash.
*
* @param string Object hash.
* @param null to be svn client compatible
* @return mixed false if not valid or 'blob', 'tree', 'commit'
*/
public function testHash($hash, $dummy=null)
{
$cmd = sprintf('GIT_DIR=%s '.Pluf::f('git_path', 'git').' cat-file -t %s',
escapeshellarg($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', $folder='')
{
}
/**
* Get the tree info.
*
* @param string Tree hash
* @param bool Do we recurse in subtrees (true)
* @param string Folder in which we want to get the info ('')
* @return array Array of file information.
*/
public function getTreeInfo($tree, $folder='')
{
if (!in_array($this->testHash($tree), array('tree', 'commit'))) {
throw new Exception(sprintf(__('Not a valid tree: %s.'), $tree));
}
$cmd_tmpl = 'GIT_DIR=%s '.Pluf::f('git_path', 'git').' ls-tree -l %s %s';
$cmd = Pluf::f('idf_exec_cmd_prefix', '')
.sprintf($cmd_tmpl, escapeshellarg($this->repo),
escapeshellarg($tree), escapeshellarg($folder));
$out = array();
$res = array();
exec($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 '.Pluf::f('git_path', '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, $dummy=null)
{
return shell_exec(sprintf(Pluf::f('idf_exec_cmd_prefix', '').
'GIT_DIR=%s '.Pluf::f('git_path', 'git').' cat-file blob %s',
escapeshellarg($this->repo),
escapeshellarg($request_file_info->hash)));
}
/**
* Get commit details.
*
* @param string Commit
* @param bool Get commit diff (false)
* @return array Changes
*/
public function getCommit($commit, $getdiff=false)
{
if ($getdiff) {
$cmd = sprintf('GIT_DIR=%s '.Pluf::f('git_path', 'git').' show --date=iso --pretty=format:%s %s',
escapeshellarg($this->repo),
"'".$this->mediumtree_fmt."'",
escapeshellarg($commit));
} else {
$cmd = sprintf('GIT_DIR=%s '.Pluf::f('git_path', 'git').' log -1 --date=iso --pretty=format:%s %s',
escapeshellarg($this->repo),
"'".$this->mediumtree_fmt."'",
escapeshellarg($commit));
}
$out = array();
exec($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')
{
$cmd = sprintf('GIT_DIR=%s '.Pluf::f('git_path', 'git').' log --numstat -1 --pretty=format:%s %s',
escapeshellarg($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;
$cmd = sprintf('GIT_DIR=%s '.Pluf::f('git_path', 'git').' log%s --date=iso --pretty=format:\'%s\' %s',
escapeshellarg($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, $prefix='git-repo-dump/')
{
return sprintf(Pluf::f('idf_exec_cmd_prefix', '').
'GIT_DIR=%s '.Pluf::f('git_path', 'git').' archive --format=zip --prefix=%s %s',
escapeshellarg($this->repo),
escapeshellarg($prefix),
escapeshellarg($commit));
}
/*
* =====================================================
* Specific Git Commands
* =====================================================
*/
/**
* Get submodule details.
*
* Given a "commit" file in the tree, find the submodule details.
*
* @param stdClass File description of the module
* @param string Current commit
* @return stdClass File description
*/
public function getSubmodule($file, $commit)
{
$file->type = 'extern';
$file->extern = '';
$info = $this->getFileInfo('.gitmodules', $commit);
if ($info == false) {
return $file;
}
$gitmodules = $this->getBlob($info);
if (preg_match('#\[submodule\s+\"'.$file->fullpath.'\"\]\s+path\s=\s(\S+)\s+url\s=\s(\S+)#mi', $gitmodules, $matches)) {
$file->extern = $matches[2];
}
return $file;
}
/**
* Foreach file in the tree, find the details.
*
* @param array Tree information
* @return array Updated tree information
*/
public function getTreeDetails($tree)
{
$n = count($tree);
$details = array();
for ($i=0;$i<$n;$i++) {
if ($tree[$i]->type == 'blob') {
$details[$tree[$i]->hash] = $i;
}
}
if (!count($details)) {
return $tree;
}
$res = $this->getCachedBlobInfo($details);
$toapp = array();
foreach ($details as $blob => $idx) {
if (isset($res[$blob])) {
$tree[$idx]->date = $res[$blob]->date;
$tree[$idx]->log = $res[$blob]->title;
$tree[$idx]->author = $res[$blob]->author;
} else {
$toapp[$blob] = $idx;
}
}
if (count($toapp)) {
$res = $this->appendBlobInfoCache($toapp);
foreach ($details as $blob => $idx) {
if (isset($res[$blob])) {
$tree[$idx]->date = $res[$blob]->date;
$tree[$idx]->log = $res[$blob]->title;
$tree[$idx]->author = $res[$blob]->author;
}
}
}
return $tree;
}
/**
* Append build info cache.
*
* The append method tries to get only the necessary details, so
* instead of going through all the commits one at a time, it will
* try to find a smarter way with regex.
*
* @see self::buildBlobInfoCache
*
* @param array The blob for which we need the information
* @return array The information
*/
public function appendBlobInfoCache($blobs)
{
$rawlog = array();
$cmd = Pluf::f('idf_exec_cmd_prefix', '')
.sprintf('GIT_DIR=%s '.Pluf::f('git_path', 'git').' log --raw --abbrev=40 --pretty=oneline -5000 --skip=%%s',
escapeshellarg($this->repo));
$skip = 0;
$res = array();
exec(sprintf($cmd, $skip), $rawlog);
while (count($rawlog) and count($blobs)) {
$rawlog = implode("\n", array_reverse($rawlog));
foreach ($blobs as $blob => $idx) {
if (preg_match('/^\:\d{6} \d{6} [0-9a-f]{40} '
.$blob.' .*^([0-9a-f]{40})/msU',
$rawlog, $matches)) {
$fc = $this->getCommit($matches[1]);
$res[$blob] = (object) array('hash' => $blob,
'date' => $fc->date,
'title' => $fc->title,
'author' => $fc->author);
unset($blobs[$blob]);
}
}
$rawlog = array();
$skip += 5000;
if ($skip > 20000) {
// We are in the case of the import of a big old
// repository, we can store as unknown the commit info
// not to try to retrieve them each time.
foreach ($blobs as $blob => $idx) {
$res[$blob] = (object) array('hash' => $blob,
'date' => '0',
'title' => '----',
'author' => 'Unknown');
}
break;
}
exec(sprintf($cmd, $skip), $rawlog);
}
$this->cacheBlobInfo($res);
return $res;
}
/**
* Build the blob info cache.
*
* We build the blob info cache 500 commits at a time.
*/
public function buildBlobInfoCache()
{
$rawlog = array();
$cmd = Pluf::f('idf_exec_cmd_prefix', '')
.sprintf('GIT_DIR=%s '.Pluf::f('git_path', 'git').' log --raw --abbrev=40 --pretty=oneline -500 --skip=%%s',
escapeshellarg($this->repo));
$skip = 0;
exec(sprintf($cmd, $skip), $rawlog);
while (count($rawlog)) {
$commit = '';
$data = array();
foreach ($rawlog as $line) {
if (substr($line, 0, 1) != ':') {
$commit = $this->getCommit(substr($line, 0, 40));
continue;
}
$blob = substr($line, 56, 40);
$data[] = (object) array('hash' => $blob,
'date' => $commit->date,
'title' => $commit->title,
'author' => $commit->author);
}
$this->cacheBlobInfo($data);
$rawlog = array();
$skip += 500;
exec(sprintf($cmd, $skip), $rawlog);
}
}
/**
* Get blob info.
*
* When we display the tree, we want to know when a given file was
* created, who was the author and at which date. This is a very
* slow operation for git as we need to go through the full
* history, find when then blob was introduced, then grab the
* corresponding commit. This is why we need a cache.
*
* @param array List as keys of blob hashs to get info for
* @return array Hash indexed results, when not found not set
*/
public function getCachedBlobInfo($hashes)
{
$cache = new IDF_Scm_Cache_Git();
$cache->_project = $this->project;
return $cache->retrieve(array_keys($hashes));
}
/**
* Cache blob info.
*
* Given a series of blob info, cache them.
*
* @param array Blob info
* @return bool Success
*/
public function cacheBlobInfo($info)
{
$cache = new IDF_Scm_Cache_Git();
$cache->_project = $this->project;
return $cache->store($info);
}
public function getFileCachedBlobInfo($hashes)
{
$res = array();
$cache = Pluf::f('tmp_folder').'/IDF_Scm_Git-'.md5($this->repo).'.cache.db';
if (!file_exists($cache)) {
return $res;
}
$data = file_get_contents($cache);
if (false === $data) {
return $res;
}
$data = split(chr(30), $data);
foreach ($data as $rec) {
if (isset($hashes[substr($rec, 0, 40)])) {
$tmp = split(chr(31), substr($rec, 40), 3);
$res[substr($rec, 0, 40)] =
(object) array('hash' => substr($rec, 0, 40),
'date' => $tmp[0],
'title' => $tmp[2],
'author' => $tmp[1]);
}
}
return $res;
}
/**
* File cache blob info.
*
* Given a series of blob info, cache them.
*
* @param array Blob info
* @return bool Success
*/
public function fileCacheBlobInfo($info)
{
// Prepare the data
$data = array();
foreach ($info as $file) {
$data[] = $file->hash.$file->date.chr(31).$file->author.chr(31).$file->title;
}
$data = implode(chr(30), $data).chr(30);
$cache = Pluf::f('tmp_folder').'/IDF_Scm_Git-'.md5($this->repo).'.cache.db';
$fp = fopen($cache, 'ab');
if ($fp) {
flock($fp, LOCK_EX);
fwrite($fp, $data, strlen($data));
fclose($fp); // releases the lock too
return true;
}
return false;
}
}
accountmanagementengine