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