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262 lines
7.6 KiB
262 lines
7.6 KiB
<?php
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// (c) Copyright by authors of the Tiki Wiki CMS Groupware Project
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//
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// All Rights Reserved. See copyright.txt for details and a complete list of authors.
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// Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See license.txt for details.
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// $Id$
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use Tiki\Process\Process;
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/**
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* Provide methods to extract information from Git repository
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* available on `.git` folder.
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*/
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class GitLib extends TikiLib
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{
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private $dir;
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private $bin;
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public function __construct($dir = null, $bin = null)
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{
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if (! empty($dir)) {
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$this->dir = $dir;
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} else {
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$this->dir = dirname(__DIR__) . DIRECTORY_SEPARATOR . '.git';
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}
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if (! empty($bin)) {
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$this->bin = $bin;
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} else {
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$this->detect_git_binary();
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}
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}
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public function detect_git_binary()
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{
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$php_os = strtoupper(PHP_OS);
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if ($php_os === 'LINUX') {
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ob_start();
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$process = new Process('which git');
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$process->inheritEnvironmentVariables();
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$process->run();
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$git = trim($process->getOutput());
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ob_end_clean();
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if (! $process->getErrorOutput() && $git) {
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$this->bin = $git;
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return $git;
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}
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} else {
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$executableFinder = new \Symfony\Component\Process\ExecutableFinder();
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$git = $executableFinder->find('git');
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$this->bin = $git;
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return $git;
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}
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}
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public function run_git($args = [])
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{
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array_unshift($args, $this->bin);
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$process = new Process($args);
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$process->run();
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$return = $process->getExitCode();
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if ($return !== 0) {
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throw new Exception($process->getErrorOutput(), $return);
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}
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return $process->getOutput();
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}
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/**
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* Get relative path to current branch file pointer
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* Eg.: .git/refs/heads/19.x
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*
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* @return string
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*/
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public function get_branch()
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{
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$filename = $this->dir . DIRECTORY_SEPARATOR . 'HEAD';
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if (! (file_exists($filename) && is_readable($filename))) {
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throw new Exception(tra('Not a git repository'));
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}
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$ref = file_get_contents($filename);
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$ref = trim($ref);
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$ref = explode(' ', $ref);
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return $ref[ 1 ];
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}
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/**
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* Get current commit hash value. If a branch is specified, it will return
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* hash value for last commit on branch informed.
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*
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* @param string $branch relative path to branch file
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* @return string
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*/
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public function get_commit($branch = null)
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{
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$branch = $branch ?: $this->get_branch();
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$filename = $this->dir . DIRECTORY_SEPARATOR . $branch;
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if (file_exists($filename) && is_readable($filename)) {
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$hash = file_get_contents($filename);
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$hash = trim($hash);
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return $hash;
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}
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$filename = $this->dir . DIRECTORY_SEPARATOR . 'packed-refs';
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if (file_exists($filename) && is_readable($filename)) {
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$file = fopen($filename, 'r');
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while (! feof($file)) {
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$line = fgets($file);
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if (strpos($line, $branch)) {
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return substr($line, 0, 40);
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}
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}
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}
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throw new Exception(sprintf(tra('Branch "%s" not found'), $branch));
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}
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/**
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* Return the content of object file for current commit or the
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* commit informed on parameter.
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*
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* @param string $commit hash
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* @return string
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*/
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public function get_object($commit = null)
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{
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$commit = $commit ?: $this->get_commit();
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$filename = $this->dir . DIRECTORY_SEPARATOR
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. 'objects' . DIRECTORY_SEPARATOR
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. substr($commit, 0, 2) . DIRECTORY_SEPARATOR
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. substr($commit, 2);
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if (file_exists($filename) && is_readable($filename)) {
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$object = file_get_contents($filename);
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return zlib_decode($object);
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} elseif ($this->bin) {
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$object = $this->run_git(['cat-file', '-t', $commit]);
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$object = rtrim($object) . " " . $this->run_git(['cat-file', '-s', $commit]);
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$object = rtrim($object) . "\0" . $this->run_git(['cat-file', '-p', $commit]);
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return $object;
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}
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throw new Exception(tra("Can't get Git object file"));
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}
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/**
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* Return information about current commit on Git repository.
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* Eg.:
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* [
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* "commit" => [
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* "size" => "245",
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* "tree" => "84e891bd79bf8729be834f75ee9e3ce74da9c9b6",
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* "hash" => "1b6852d92a11cc3df8bec1224cfdfcfd280cf31a",
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* ],
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* "author" => [
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* "date" => 1554652946,
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* "email" => "<xorti@localhost>",
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* "name" => "xorti",
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* ],
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* "committer" => [
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* "date" => 1554652946,
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* "email" => "<xorti@localhost>",
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* "name" => "xorti",
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* ],
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* "parent" => [
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* "10c4999b34e28e994d51f0d17bc73dc4d1fa44e4",
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* ],
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* "message" => "[bp/r69651][FIX] Fix php requirements in tiki-check",
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* "branch" => "19.x",
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* ]
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*
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* @return array
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*/
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public function get_info()
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{
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$branch = $this->get_branch();
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$commit = $this->get_commit($branch);
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$object = $this->get_object($commit);
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$object = $this->parse_object($object);
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$object['branch'] = substr($branch, strrpos($branch, '/') + 1);
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$object['commit']['hash'] = $commit;
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return $object;
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}
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/**
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* Return structured array for object informed as parameter.
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*
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* @param string $object
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* @return array
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*/
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public function parse_object($object)
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{
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$type = substr($object, 0, strpos($object, ' '));
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if ($type === 'commit') {
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return $this->parse_object_commit($object);
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}
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throw new Exception('Not implemented');
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}
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/**
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* Return structured array with commit information for the object
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* informed as parameter
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*
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* @param string $object
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* @return array
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*/
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public function parse_object_commit($object)
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{
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$info = [
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'commit' => [],
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'author' => '',
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'committer' => '',
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'parent' => [],
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];
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$message_pos = strpos($object, "\n\n");
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$info['message'] = substr($object, $message_pos + 2);
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$object = substr($object, 0, $message_pos);
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$object = explode("\n", $object);
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foreach ($object as $line) {
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$line = explode(' ', $line);
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$temp = null;
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if ($line[ 0 ] === 'commit') {
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$temp = explode("\0", $line[ 1 ]);
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$info['commit']['size'] = $temp[0];
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if (isset($temp[1]) && $temp[1] === 'tree') {
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$info['commit']['tree'] = $line [ 2 ];
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}
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} elseif (in_array($line[0], ['author', 'committer'])) {
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$key = $line[0];
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$info[$key] = [];
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$temp = array_slice($line, -2);
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$temp = array_map('intval', $temp);
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$info[$key]['date'] = $temp[0] + ($temp[1] * 6 * 6);
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$temp = array_slice($line, -3, -2);
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$info[$key]['email'] = $temp[0];
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$temp = array_slice($line, 1, -3);
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$info[$key]['name'] = implode(' ', $temp);
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} elseif ($line [ 0 ] === 'parent') {
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$info['parent'][] = $line[ 1 ];
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}
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}
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$info['mdate'] = filemtime('.git/FETCH_HEAD');
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return $info;
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}
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}
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