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/** Default Implementation of IGit Interface
*
* @author Jan Pecha, <janpecha@email.cz>
* @license New BSD License (BSD-3), see file license.md
*/
namespace Cz\Git;
class GitRepository implements IGit
{
/** @var string */
private $repository;
/** @var string|NULL @internal */
private $cwd;
/**
* @param string
*/
public function __construct($repository)
{
if(basename($repository) === '.git')
{
$repository = dirname($repository);
}
$this->repository = realpath($repository);
if($this->repository === FALSE)
{
throw new GitException("Repository '$repository' not found.");
}
}
/**
* @return string
*/
public function getRepositoryPath()
{
return $this->repository;
}
/**
* Creates a tag.
* `git tag <name>`
* @param string
* @throws Cz\Git\GitException
* @return self
*/
public function createTag($name)
{
return $this->begin()
->run('git tag', $name)
->end();
}
/**
* Removes tag.
* `git tag -d <name>`
* @param string
* @throws Cz\Git\GitException
* @return self
*/
public function removeTag($name)
{
return $this->begin()
->run('git tag', array(
'-d' => $name,
))
->end();
}
/**
* Renames tag.
* `git tag <new> <old>`
* `git tag -d <old>`
* @param string
* @param string
* @throws Cz\Git\GitException
* @return self
*/
public function renameTag($oldName, $newName)
{
return $this->begin()
// http://stackoverflow.com/a/1873932
// create new as alias to old (`git tag NEW OLD`)
->run('git tag', $newName, $oldName)
// delete old (`git tag -d OLD`)
->removeTag($oldName) // WARN! removeTag() calls end() method!!!
->end();
}
/**
* Returns list of tags in repo.
* @return string[]|NULL NULL => no tags
*/
public function getTags()
{
return $this->extractFromCommand('git tag', 'trim');
}
/**
* Merges branches.
* `git merge <options> <name>`
* @param string
* @param array|NULL
* @throws Cz\Git\GitException
* @return self
*/
public function merge($branch, $options = NULL)
{
return $this->begin()
->run('git merge', $options, $branch)
->end();
}
/**
* Creates new branch.
* `git branch <name>`
* (optionaly) `git checkout <name>`
* @param string
* @param bool
* @throws Cz\Git\GitException
* @return self
*/
public function createBranch($name, $checkout = FALSE)
{
$this->begin();
// git branch $name
$this->run('git branch', $name);
if($checkout)
{
$this->checkout($name);
}
return $this->end();
}
/**
* Removes branch.
* `git branch -d <name>`
* @param string
* @throws Cz\Git\GitException
* @return self
*/
public function removeBranch($name)
{
return $this->begin()
->run('git branch', array(
'-d' => $name,
))
->end();
}
/**
* Gets name of current branch
* `git branch` + magic
* @return string
* @throws Cz\Git\GitException
*/
public function getCurrentBranchName()
{
try
{
$branch = $this->extractFromCommand('git branch -a', function($value) {
if(isset($value[0]) && $value[0] === '*')
{
return trim(substr($value, 1));
}
return FALSE;
});
if(is_array($branch))
{
return $branch[0];
}
}
catch(GitException $e) {}
throw new GitException('Getting current branch name failed.');
}
/**
* Returns list of all (local & remote) branches in repo.
* @return string[]|NULL NULL => no branches
*/
public function getBranches()
{
return $this->extractFromCommand('git branch -a', function($value) {
return trim(substr($value, 1));
});
}
/**
* Returns list of local branches in repo.
* @return string[]|NULL NULL => no branches
*/
public function getLocalBranches()
{
return $this->extractFromCommand('git branch', function($value) {
return trim(substr($value, 1));
});
}
/**
* Checkout branch.
* `git checkout <branch>`
* @param string
* @throws Cz\Git\GitException
* @return self
*/
public function checkout($name)
{
return $this->begin()
->run('git checkout', $name)
->end();
}
/**
* Removes file(s).
* `git rm <file>`
* @param string|string[]
* @throws Cz\Git\GitException
* @return self
*/
public function removeFile($file)
{
if(!is_array($file))
{
$file = func_get_args();
}
$this->begin();
foreach($file as $item)
{
$this->run('git rm', $item, '-r');
}
return $this->end();
}
/**
* Adds file(s).
* `git add <file>`
* @param string|string[]
* @throws Cz\Git\GitException
* @return self
*/
public function addFile($file)
{
if(!is_array($file))
{
$file = func_get_args();
}
$this->begin();
foreach($file as $item)
{
// TODO: ?? is file($repo . / . $item) ??
$this->run('git add', $item);
}
return $this->end();
}
/**
* Renames file(s).
* `git mv <file>`
* @param string|string[] from: array('from' => 'to', ...) || (from, to)
* @param string|NULL
* @throws Cz\Git\GitException
* @return self
*/
public function renameFile($file, $to = NULL)
{
if(!is_array($file)) // rename(file, to);
{
$file = array(
$file => $to,
);
}
$this->begin();
foreach($file as $from => $to)
{
$this->run('git mv', $from, $to);
}
return $this->end();
}
/**
* Commits changes
* `git commit <params> -m <message>`
* @param string
* @param string[] param => value
* @throws Cz\Git\GitException
* @return self
*/
public function commit($message, $params = NULL)
{
if(!is_array($params))
{
$params = array();
}
return $this->begin()
->run("git commit", $params, array(
'-m' => $message,
))
->end();
}
/**
* Exists changes?
* `git status` + magic
* @return bool
*/
public function hasChanges()
{
$this->begin();
$lastLine = exec('git status');
$this->end();
return (strpos($lastLine, 'nothing to commit')) === FALSE; // FALSE => changes
}
/**
* @deprecated
*/
public function isChanges()
{
return $this->hasChanges();
}
/**
* @return self
*/
private function begin()
{
if($this->cwd === NULL) // TODO: good idea??
{
$this->cwd = getcwd();
chdir($this->repository);
}
return $this;
}
/**
* @return self
*/
private function end()
{
if(is_string($this->cwd))
{
chdir($this->cwd);
}
$this->cwd = NULL;
return $this;
}
/**
* @param string
* @param callback|NULL
* @return string[]|NULL
*/
private function extractFromCommand($cmd, $filter = NULL)
{
$output = array();
$exitCode = NULL;
$this->begin();
exec("$cmd", $output, $exitCode);
$this->end();
if($exitCode !== 0 || !is_array($output))
{
throw new GitException("Command $cmd failed.");
}
if($filter !== NULL)
{
$newArray = array();
foreach($output as $line)
{
$value = $filter($line);
if($value === FALSE)
{
continue;
}
$newArray[] = $value;
}
$output = $newArray;
}
if(!isset($output[0])) // empty array
{
return NULL;
}
return $output;
}
/** Runs command.
* @param string|array
* @return self
* @throws Cz\Git\GitException
*/
protected function run($cmd/*, $options = NULL*/)
{
$args = func_get_args();
$cmd = self::processCommand($args);
exec($cmd, $output, $ret);
if($ret !== 0)
{
throw new GitException("Command '$cmd' failed.");
}
return $this;
}
protected static function processCommand(array $args)
{
$cmd = array();
$programName = array_shift($args);
foreach($args as $arg)
{
if(is_array($arg))
{
foreach($arg as $key => $value)
{
$_c = '';
if(is_string($key))
{
$_c = "$key ";
}
$cmd[] = $_c . escapeshellarg($value);
}
}
elseif(is_scalar($arg) && !is_bool($arg))
{
$cmd[] = escapeshellarg($arg);
}
}
return "$programName " . implode(' ', $cmd);
}
/**
* Init repo in directory
* @param string
* @param array|NULL
* @return self
* @throws GitException
*/
public static function init($directory, array $params = NULL)
{
if(is_dir("$directory/.git"))
{
throw new GitException("Repo already exists in $directory.");
}
if(!is_dir($directory) && !@mkdir($directory, 0777, TRUE)) // intentionally @; not atomic; from Nette FW
{
throw new GitException("Unable to create directory '$directory'.");
}
$cwd = getcwd();
chdir($directory);
exec(self::processCommand(array(
'git init',
$params,
$directory,
)), $output, $returnCode);
if($returnCode !== 0)
{
throw new GitException("Git init failed (directory $directory).");
}
$repo = getcwd();
chdir($cwd);
return new static($repo);
}
/**
* Clones GIT repository from $url into $directory
* @param string
* @param string|NULL
* @return self
*/
public static function cloneRepository($url, $directory = NULL)
{
if($directory !== NULL && is_dir("$directory/.git"))
{
throw new GitException("Repo already exists in $directory.");
}
$cwd = getcwd();
if($directory === NULL)
{
$directory = self::extractRepositoryNameFromUrl($url);
$directory = "$cwd/$directory";
}
elseif(!self::isAbsolute($directory))
{
$directory = "$cwd/$directory";
}
exec('git clone -q ' . escapeshellarg($url) . ' ' . escapeshellarg($directory), $output, $returnCode);
if($returnCode !== 0)
{
throw new GitException("Git clone failed (directory $directory).");
}
return new static($directory);
}
/**
* @param string /path/to/repo.git | host.xz:foo/.git | ...
* @return string repo | foo | ...
*/
public static function extractRepositoryNameFromUrl($url)
{
// /path/to/repo.git => repo
// host.xz:foo/.git => foo
$directory = rtrim($url, '/');
if(substr($directory, -5) === '/.git')
{
$directory = substr($directory, 0, -5);
}
$directory = basename($directory, '.git');
if(($pos = strrpos($directory, ':')) !== FALSE)
{
$directory = substr($directory, $pos + 1);
}
return $directory;
}
/**
* Is path absolute?
* Method from Nette\Utils\FileSystem
* @link https://github.com/nette/nette/blob/master/Nette/Utils/FileSystem.php
* @return bool
*/
public static function isAbsolute($path)
{
return (bool) preg_match('#[/\\\\]|[a-zA-Z]:[/\\\\]|[a-z][a-z0-9+.-]*://#Ai', $path);
}
}