Add Craigs granite library to 3rdparty and files_versioning. Still not working and lots ot stuff to do.
This commit is contained in:
Frank Karlitschek
parent
4fda6af725
commit
b0894b3148
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@ -0,0 +1,162 @@
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<?php
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/**
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* Blob - provides a Git blob object
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*
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* PHP version 5.3
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*
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* @category Git
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* @package Granite
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* @author Craig Roberts <craig0990@googlemail.com>
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* @license http://www.opensource.org/licenses/mit-license.php MIT Expat License
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* @link http://craig0990.github.com/Granite/
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*/
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namespace Granite\Git;
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use \Granite\Git\Object\Raw as Raw;
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use \InvalidArgumentException as InvalidArgumentException;
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use \finfo as finfo;
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/**
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* **Granite\Git\Blob** represents the raw content of an object in a Git repository,
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* typically a **file**. This class provides methods related to the handling of
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* blob content, mimetypes, sizes and write support.
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*
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* @category Git
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* @package Granite
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* @author Craig Roberts <craig0990@googlemail.com>
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* @license http://www.opensource.org/licenses/mit-license.php MIT Expat License
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* @link http://craig0990.github.com/Granite/
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*/
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class Blob
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{
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/**
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* Stores the SHA-1 id of the object requested; accessed through the `sha()`
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* method where it is recalculated based on the blob content.
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*/
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private $sha = null;
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/**
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* The raw binary string of the file contents.
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*/
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private $content = "";
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/**
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* The path to the repository location.
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*/
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private $path;
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/**
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* Fetches a raw Git object and parses the result. Throws an
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* InvalidArgumentException if the object is not of the correct type,
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* or cannot be found.
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*
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* @param string $path The path to the repository root.
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* @param string $sha The SHA-1 id of the requested object, or `null` if
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* creating a new blob object.
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*
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* @throws InvalidArgumentException If the SHA-1 id provided is not a blob.
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*/
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public function __construct($path, $sha = NULL)
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{
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$this->path = $path;
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if ($sha !== NULL) {
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$this->sha = $sha;
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$object = Raw::factory($path, $sha);
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if ($object->type() !== Raw::OBJ_BLOB) {
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throw new InvalidArgumentException(
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"The object $sha is not a blob, type is {$object->type()}"
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);
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}
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$this->content = $object->content();
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unset($object);
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}
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}
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/**
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* Sets or returns the raw file content, depending whether the parameter is
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* provided.
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*
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* @param string $content The object content to set, or `null` if requesting the
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* current content.
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*
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* @return string The raw binary string of the file contents.
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*/
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public function content($content = NULL)
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{
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if ($content == NULL) {
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return $this->content;
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}
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$this->content = $content;
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}
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/**
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* Returns the size of the file content in bytes, equivalent to
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* `strlen($blob->content())`.
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*
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* @return int The size of the object in bytes.
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*/
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public function size()
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{
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return strlen($this->content);
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}
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/**
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* Updates and returns the SHA-1 id of the object, based on it's contents.
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*
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* @return int The SHA-1 id of the object.
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*/
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public function sha()
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{
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$sha = hash_init('sha1');
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$header = 'blob ' . strlen($this->content) . "\0";
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hash_update($sha, $header);
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hash_update($sha, $this->content);
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$this->sha = hash_final($sha);
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return $this->sha;
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}
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/**
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* Returns the mimetype of the object, using `finfo()` to determine the mimetype
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* of the string.
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*
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* @return string The object mimetype.
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* @see http://php.net/manual/en/function.finfo-open.php
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*/
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public function mimetype()
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{
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$finfo = new finfo(FILEINFO_MIME);
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return $finfo->buffer($this->content);
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}
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/**
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* Encode and compress the object content, saving it to a 'loose' file.
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*
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* @return boolean True on success, false on failure.
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*/
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public function write()
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{
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$sha = $this->sha(TRUE);
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$path = $this->path
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. 'objects'
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. DIRECTORY_SEPARATOR
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. substr($sha, 0, 2)
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. DIRECTORY_SEPARATOR
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. substr($sha, 2);
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// FIXME: currently writes loose objects only
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if (file_exists($path)) {
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return FALSE;
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}
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if (!is_dir(dirname($path))) {
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mkdir(dirname($path), 0777, TRUE);
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}
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$loose = fopen($path, 'wb');
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$data = 'blob ' . strlen($this->content) . "\0" . $this->content;
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$write = fwrite($loose, gzcompress($data));
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fclose($loose);
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return ($write !== FALSE);
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}
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}
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@ -0,0 +1,232 @@
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<?php
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/**
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* Commit - provides a 'commit' object
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*
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* PHP version 5.3
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*
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* @category Git
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* @package Granite
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* @author Craig Roberts <craig0990@googlemail.com>
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* @license http://www.opensource.org/licenses/mit-license.php MIT Expat License
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* @link http://craig0990.github.com/Granite/
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*/
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namespace Granite\Git;
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use \Granite\Git\Object\Raw as Raw;
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use \InvalidArgumentException as InvalidArgumentException;
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/**
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* Commit represents a full commit object
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*
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* @category Git
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* @package Granite
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* @author Craig Roberts <craig0990@googlemail.com>
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* @license http://www.opensource.org/licenses/mit-license.php MIT Expat License
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* @link http://craig0990.github.com/Granite/
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*/
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class Commit
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{
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/**
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* The path to the repository root
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*/
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private $path;
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/**
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* The SHA-1 id of the requested commit
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*/
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private $sha;
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/**
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* The size of the commit in bytes
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*/
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private $size;
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/**
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* The commit message
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*/
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private $message;
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/**
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* The full committer string
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*/
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private $committer;
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/**
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* The full author string
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*/
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private $author;
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/**
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* The SHA-1 ids of the parent commits
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*/
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private $parents = array();
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/**
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* Fetches a raw Git object and parses the result. Throws an
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* InvalidArgumentException if the object is not of the correct type,
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* or cannot be found.
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*
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* @param string $path The path to the repository root
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* @param string $sha The SHA-1 id of the requested object
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*
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* @throws InvalidArgumentException
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*/
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public function __construct($path, $sha = NULL)
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{
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$this->path = $path;
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if ($sha !== NULL) {
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$this->sha = $sha;
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$object = Raw::factory($path, $sha);
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$this->size = $object->size();
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if ($object->type() !== Raw::OBJ_COMMIT) {
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throw new InvalidArgumentException(
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"The object $sha is not a commit, type is " . $object->type()
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);
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}
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// Parse headers and commit message (delimited with "\n\n")
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list($headers, $this->message) = explode("\n\n", $object->content(), 2);
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$headers = explode("\n", $headers);
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foreach ($headers as $header) {
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list($header, $value) = explode(' ', $header, 2);
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if ($header == 'parent') {
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$this->parents[] = $value;
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} else {
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$this->$header = $value;
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}
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}
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$this->tree = new Tree($this->path, $this->tree);
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}
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}
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/**
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* Returns the message stored in the commit
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*
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* @return string The commit message
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*/
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public function message($message = NULL)
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{
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if ($message !== NULL) {
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$this->message = $message;
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return $this;
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}
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return $this->message;
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}
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/**
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* Returns the commiter string
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*
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* @return string The committer string
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*/
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public function committer($committer = NULL)
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{
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if ($committer !== NULL) {
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$this->committer = $committer;
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return $this;
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}
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return $this->committer;
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}
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/**
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* Returns the author string
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*
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* @return string The author string
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*/
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public function author($author = NULL)
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{
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if ($author !== NULL) {
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$this->author = $author;
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return $this;
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}
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return $this->author;
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}
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/**
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* Returns the parents of the commit, or an empty array if none
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*
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* @return array The parents of the commit
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*/
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public function parents($parents = NULL)
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{
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if ($parents !== NULL) {
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$this->parents = $parents;
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return $this;
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}
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return $this->parents;
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}
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/**
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* Returns a tree object associated with the commit
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*
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* @return Tree
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*/
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public function tree(Tree $tree = NULL)
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{
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if ($tree !== NULL) {
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$this->tree = $tree;
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return $this;
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}
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return $this->tree;
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}
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/**
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* Returns the size of the commit in bytes (Git header + data)
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*
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* @return int
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*/
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public function size()
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{
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return $this->size;
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}
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/**
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* Returns the size of the commit in bytes (Git header + data)
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*
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* @return int
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*/
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public function sha()
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{
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$this->sha = hash('sha1', $this->_raw());
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return $this->sha;
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}
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public function write()
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{
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$sha = $this->sha();
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$path = $this->path
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. 'objects'
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. DIRECTORY_SEPARATOR
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. substr($sha, 0, 2)
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. DIRECTORY_SEPARATOR
|
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. substr($sha, 2);
|
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// FIXME: currently writes loose objects only
|
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if (file_exists($path)) {
|
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return FALSE;
|
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}
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|
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if (!is_dir(dirname($path))) {
|
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mkdir(dirname($path), 0777, TRUE);
|
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}
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|
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$loose = fopen($path, 'wb');
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$data = $this->_raw();
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$write = fwrite($loose, gzcompress($data));
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fclose($loose);
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|
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return ($write !== FALSE);
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}
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public function _raw()
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{
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$data = 'tree ' . $this->tree->sha() . "\n";
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foreach ($this->parents as $parent)
|
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{
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$data .= "parent $parent\n";
|
||||
}
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$data .= 'author ' . $this->author . "\n";
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$data .= 'committer ' . $this->committer . "\n\n";
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$data .= $this->message;
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$data = 'commit ' . strlen($data) . "\0" . $data;
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return $data;
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}
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|
||||
}
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@ -0,0 +1,210 @@
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<?php
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/**
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||||
* Index - provides an 'index' object for packfile indexes
|
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*
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* PHP version 5.3
|
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*
|
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* @category Git
|
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* @package Granite
|
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* @author Craig Roberts <craig0990@googlemail.com>
|
||||
* @license http://www.opensource.org/licenses/mit-license.php MIT License
|
||||
* @link http://craig0990.github.com/Granite/
|
||||
*/
|
||||
|
||||
namespace Granite\Git\Object;
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||||
use \UnexpectedValueException as UnexpectedValueException;
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||||
|
||||
/**
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||||
* Index represents a packfile index
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||||
*
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||||
* @category Git
|
||||
* @package Granite
|
||||
* @author Craig Roberts <craig0990@googlemail.com>
|
||||
* @license http://www.opensource.org/licenses/mit-license.php MIT License
|
||||
* @link http://craig0990.github.com/Granite/
|
||||
*/
|
||||
class Index
|
||||
{
|
||||
const INDEX_MAGIC = "\377tOc";
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||||
|
||||
/**
|
||||
* The full path to the packfile index
|
||||
*/
|
||||
private $path;
|
||||
/**
|
||||
* The offset at which the fanout begins, version 2+ indexes have a 2-byte header
|
||||
*/
|
||||
private $offset = 8;
|
||||
/**
|
||||
* The size of the SHA-1 entries, version 1 stores 4-byte offsets alongside to
|
||||
* total 24 bytes, version 2+ stores offsets separately
|
||||
*/
|
||||
private $size = 20;
|
||||
/**
|
||||
* The version of the index file format, versions 1 and 2 are in use and
|
||||
* currently supported
|
||||
*/
|
||||
private $version;
|
||||
|
||||
/**
|
||||
* Fetches a raw Git object and parses the result
|
||||
*
|
||||
* @param string $path The path to the repository root
|
||||
* @param string $packname The name of the packfile index to read
|
||||
*/
|
||||
public function __construct($path, $packname)
|
||||
{
|
||||
$this->path = $path
|
||||
. 'objects'
|
||||
. DIRECTORY_SEPARATOR
|
||||
. 'pack'
|
||||
. DIRECTORY_SEPARATOR
|
||||
. 'pack-' . $packname . '.idx';
|
||||
|
||||
$this->version = $this->_readVersion();
|
||||
if ($this->version !== 1 && $this->version !== 2) {
|
||||
throw new UnexpectedValueException(
|
||||
"Unsupported index version (version $version)"
|
||||
);
|
||||
}
|
||||
|
||||
if ($this->version == 1) {
|
||||
$this->offset = 0; // Version 1 index has no header/version
|
||||
$this->size = 24; // Offsets + SHA-1 ids are stored together
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the offset of the object stored in the index
|
||||
*
|
||||
* @param string $sha The SHA-1 id of the object being requested
|
||||
*
|
||||
* @return int The offset of the object in the packfile
|
||||
*/
|
||||
public function find($sha)
|
||||
{
|
||||
$index = fopen($this->path, 'rb');
|
||||
$offset = false; // Offset for object in packfile not found by default
|
||||
|
||||
// Read the fanout to skip to the start char in the sorted SHA-1 list
|
||||
list($start, $after) = $this->_readFanout($index, $sha);
|
||||
|
||||
if ($start == $after) {
|
||||
fclose($index);
|
||||
return false; // Object is apparently located in a 0-length section
|
||||
}
|
||||
|
||||
// Seek $offset + 255 4-byte fanout entries and read 256th entry
|
||||
fseek($index, $this->offset + 4 * 255);
|
||||
$totalObjects = $this->_uint32($index);
|
||||
|
||||
// Look up the SHA-1 id of the object
|
||||
// TODO: Binary search
|
||||
fseek($index, $this->offset + 1024 + $this->size * $start);
|
||||
for ($i = $start; $i < $after; $i++) {
|
||||
if ($this->version == 1) {
|
||||
$offset = $this->_uint32($index);
|
||||
}
|
||||
|
||||
$name = fread($index, 20);
|
||||
if ($name == pack('H40', $sha)) {
|
||||
break; // Found it
|
||||
}
|
||||
}
|
||||
|
||||
if ($i == $after) {
|
||||
fclose($index);
|
||||
return false; // Scanned entire section, couldn't find it
|
||||
}
|
||||
|
||||
if ($this->version == 2) {
|
||||
// Jump to the offset location and read it
|
||||
fseek($index, 1032 + 24 * $totalObjects + 4 * $i);
|
||||
$offset = $this->_uint32($index);
|
||||
if ($offset & 0x80000000) {
|
||||
// Offset is a 64-bit integer; packfile is larger than 2GB
|
||||
fclose($index);
|
||||
throw new UnexpectedValueException(
|
||||
"Packfile larger than 2GB, currently unsupported"
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
fclose($index);
|
||||
return $offset;
|
||||
}
|
||||
|
||||
/**
|
||||
* Converts a binary string into a 32-bit unsigned integer
|
||||
*
|
||||
* @param handle $file Binary string to convert
|
||||
*
|
||||
* @return int Integer value
|
||||
*/
|
||||
private function _uint32($file)
|
||||
{
|
||||
$val = unpack('Nx', fread($file, 4));
|
||||
return $val['x'];
|
||||
}
|
||||
|
||||
/**
|
||||
* Reads the fanout for a particular SHA-1 id
|
||||
*
|
||||
* Largely modified from Glip, with some reference to Grit - largely because I
|
||||
* can't see how to re-implement this in PHP
|
||||
*
|
||||
* @param handle $file File handle to the index file
|
||||
* @param string $sha The SHA-1 id to search for
|
||||
* @param int $offset The offset at which the fanout begins
|
||||
*
|
||||
* @return array Array containing integer 'start' and
|
||||
* 'past-the-end' locations
|
||||
*/
|
||||
private function _readFanout($file, $sha)
|
||||
{
|
||||
$sha = pack('H40', $sha);
|
||||
fseek($file, $this->offset);
|
||||
if ($sha{0} == "\00") {
|
||||
/**
|
||||
* First character is 0, read first fanout entry to provide
|
||||
* 'past-the-end' location (since first fanout entry provides start
|
||||
* point for '1'-prefixed SHA-1 ids)
|
||||
*/
|
||||
$start = 0;
|
||||
fseek($file, $this->offset); // Jump to start of fanout, $offset bytes in
|
||||
$after = $this->_uint32($file);
|
||||
} else {
|
||||
/**
|
||||
* Take ASCII value of first character, minus one to get the fanout
|
||||
* position of the offset (minus one because the fanout does not
|
||||
* contain an entry for "\00"), multiplied by four bytes per entry
|
||||
*/
|
||||
fseek($file, $this->offset + (ord($sha{0}) - 1) * 4);
|
||||
$start = $this->_uint32($file);
|
||||
$after = $this->_uint32($file);
|
||||
}
|
||||
|
||||
return array($start, $after);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the version number of the index file, or 1 if there is no version
|
||||
* information
|
||||
*
|
||||
* @return int
|
||||
*/
|
||||
private function _readVersion()
|
||||
{
|
||||
$file = fopen($this->path, 'rb');
|
||||
$magic = fread($file, 4);
|
||||
$version = $this->_uint32($file);
|
||||
|
||||
if ($magic !== self::INDEX_MAGIC) {
|
||||
$version = 1;
|
||||
}
|
||||
|
||||
fclose($file);
|
||||
return $version;
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,81 @@
|
|||
<?php
|
||||
/**
|
||||
* Loose - provides a 'loose object' object
|
||||
*
|
||||
* PHP version 5.3
|
||||
*
|
||||
* @category Git
|
||||
* @package Granite
|
||||
* @author Craig Roberts <craig0990@googlemail.com>
|
||||
* @license http://www.opensource.org/licenses/mit-license.php MIT Expat License
|
||||
* @link http://craig0990.github.com/Granite/
|
||||
*/
|
||||
|
||||
namespace Granite\Git\Object;
|
||||
use \UnexpectedValueException as UnexpectedValueException;
|
||||
|
||||
/**
|
||||
* Loose represents a loose object in the Git repository
|
||||
*
|
||||
* @category Git
|
||||
* @package Granite
|
||||
* @author Craig Roberts <craig0990@googlemail.com>
|
||||
* @license http://www.opensource.org/licenses/mit-license.php MIT Expat License
|
||||
* @link http://craig0990.github.com/Granite/
|
||||
*/
|
||||
class Loose extends Raw
|
||||
{
|
||||
|
||||
/**
|
||||
* Reads an object from a loose object file based on the SHA-1 id
|
||||
*
|
||||
* @param string $path The path to the repository root
|
||||
* @param string $sha The SHA-1 id of the requested object
|
||||
*
|
||||
* @throws UnexpectedValueException If the type is not 'commit', 'tree',
|
||||
* 'tag' or 'blob'
|
||||
*/
|
||||
public function __construct($path, $sha)
|
||||
{
|
||||
$this->sha = $sha;
|
||||
|
||||
$loose_path = $path
|
||||
. 'objects/'
|
||||
. substr($sha, 0, 2)
|
||||
. '/'
|
||||
. substr($sha, 2);
|
||||
|
||||
if (!file_exists($loose_path)) {
|
||||
throw new InvalidArgumentException("Cannot open loose object file for $sha");
|
||||
}
|
||||
|
||||
$raw = gzuncompress(file_get_contents($loose_path));
|
||||
$data = explode("\0", $raw, 2);
|
||||
|
||||
$header = $data[0];
|
||||
$this->content = $data[1];
|
||||
|
||||
list($this->type, $this->size) = explode(' ', $header);
|
||||
|
||||
switch ($this->type) {
|
||||
case 'commit':
|
||||
$this->type = Raw::OBJ_COMMIT;
|
||||
break;
|
||||
case 'tree':
|
||||
$this->type = Raw::OBJ_TREE;
|
||||
break;
|
||||
case 'blob':
|
||||
$this->type = Raw::OBJ_BLOB;
|
||||
break;
|
||||
case 'tag':
|
||||
$this->type = Raw::OBJ_TAG;
|
||||
break;
|
||||
default:
|
||||
throw new UnexpectedValueException(
|
||||
"Unexpected type '{$this->type}'"
|
||||
);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,304 @@
|
|||
<?php
|
||||
/**
|
||||
* Packed - provides a 'packed object' object
|
||||
*
|
||||
* PHP version 5.3
|
||||
*
|
||||
* @category Git
|
||||
* @package Granite
|
||||
* @author Craig Roberts <craig0990@googlemail.com>
|
||||
* @license http://www.opensource.org/licenses/mit-license.php MIT Expat License
|
||||
* @link http://craig0990.github.com/Granite/
|
||||
*/
|
||||
|
||||
namespace Granite\Git\Object;
|
||||
use \UnexpectedValueException as UnexpectedValueException;
|
||||
|
||||
/**
|
||||
* Packed represents a packed object in the Git repository
|
||||
*
|
||||
* @category Git
|
||||
* @package Granite
|
||||
* @author Craig Roberts <craig0990@googlemail.com>
|
||||
* @license http://www.opensource.org/licenses/mit-license.php MIT Expat License
|
||||
* @link http://craig0990.github.com/Granite/
|
||||
*/
|
||||
class Packed extends Raw
|
||||
{
|
||||
|
||||
/**
|
||||
* The name of the packfile being read
|
||||
*/
|
||||
private $_packfile;
|
||||
|
||||
/**
|
||||
* Added to the object size to make a 'best-guess' effort at how much compressed
|
||||
* data to read - should be reimplemented, ideally with streams.
|
||||
*/
|
||||
const OBJ_PADDING = 512;
|
||||
|
||||
/**
|
||||
* Reads the object data from the compressed data at $offset in $packfile
|
||||
*
|
||||
* @param string $packfile The path to the packfile
|
||||
* @param int $offset The offset of the object data
|
||||
*/
|
||||
public function __construct($packfile, $offset)
|
||||
{
|
||||
$this->_packfile = $packfile;
|
||||
|
||||
list($this->type, $this->size, $this->content)
|
||||
= $this->_readPackedObject($offset);
|
||||
}
|
||||
|
||||
/**
|
||||
* Reads the object data at $this->_offset
|
||||
*
|
||||
* @param int $offset Offset of the object header
|
||||
*
|
||||
* @return array Containing the type, size and object data
|
||||
*/
|
||||
private function _readPackedObject($offset)
|
||||
{
|
||||
$file = fopen($this->_packfile, 'rb');
|
||||
fseek($file, $offset);
|
||||
// Read the type and uncompressed size from the object header
|
||||
list($type, $size) = $this->_readHeader($file, $offset);
|
||||
$object_offset = ftell($file);
|
||||
|
||||
if ($type == self::OBJ_OFS_DELTA || $type == self::OBJ_REF_DELTA) {
|
||||
return $this->_unpackDeltified(
|
||||
$file, $offset, $object_offset, $type, $size
|
||||
);
|
||||
}
|
||||
|
||||
$content = gzuncompress(fread($file, $size + self::OBJ_PADDING), $size);
|
||||
|
||||
return array($type, $size, $content);
|
||||
}
|
||||
|
||||
/**
|
||||
* Reads a packed object header, returning the type and the size. For more
|
||||
* detailed information, refer to the @see tag.
|
||||
*
|
||||
* From the @see tag: "Each byte is really 7 bits of data, with the first bit
|
||||
* being used to say if that hunk is the last one or not before the data starts.
|
||||
* If the first bit is a 1, you will read another byte, otherwise the data starts
|
||||
* next. The first 3 bits in the first byte specifies the type of data..."
|
||||
*
|
||||
* @param handle $file File handle to read
|
||||
* @param int $offset Offset of the object header
|
||||
*
|
||||
* @return array Containing the type and the size
|
||||
* @see http://book.git-scm.com/7_the_packfile.html
|
||||
*/
|
||||
private function _readHeader($file, $offset)
|
||||
{
|
||||
// Read the object header byte-by-byte
|
||||
fseek($file, $offset);
|
||||
$byte = ord(fgetc($file));
|
||||
/**
|
||||
* Bit-shift right by four, then ignore the first bit with a bitwise AND
|
||||
* This gives us the object type in binary:
|
||||
* 001 commit self::OBJ_COMMIT
|
||||
* 010 tree self::OBJ_TREE
|
||||
* 011 blob self::OBJ_BLOB
|
||||
* 100 tag self::OBJ_TAG
|
||||
* 110 offset delta self::OBJ_OFS_DELTA
|
||||
* 111 ref delta self::OBJ_REF_DELTA
|
||||
*
|
||||
* (000 is undefined, 101 is not currently in use)
|
||||
* See http://book.git-scm.com/7_the_packfile.html for details
|
||||
*/
|
||||
$type = ($byte >> 4) & 0x07;
|
||||
|
||||
// Read the last four bits of the first byte, used to find the size
|
||||
$size = $byte & 0x0F;
|
||||
|
||||
/**
|
||||
* $shift initially set to four, since we use the last four bits of the first
|
||||
* byte
|
||||
*
|
||||
* $byte & 0x80 checks the initial bit is set to 1 (i.e. keep reading data)
|
||||
*
|
||||
* Finally, $shift is incremented by seven for each consecutive byte (because
|
||||
* we ignore the initial bit)
|
||||
*/
|
||||
for ($shift = 4; $byte & 0x80; $shift += 7) {
|
||||
$byte = ord(fgetc($file));
|
||||
/**
|
||||
* The size is ANDed against 0x7F to strip the initial bit, then
|
||||
* bitshifted by left $shift (4 or 7, depending on whether it's the
|
||||
* initial byte) and ORed against the existing binary $size. This
|
||||
* continuously increments the $size variable.
|
||||
*/
|
||||
$size |= (($byte & 0x7F) << $shift);
|
||||
}
|
||||
|
||||
return array($type, $size);
|
||||
}
|
||||
|
||||
/**
|
||||
* Unpacks a deltified object located at $offset in $file
|
||||
*
|
||||
* @param handle $file File handle to read
|
||||
* @param int $offset Offset of the object data
|
||||
* @param int $object_offset Offset of the object data, past the header
|
||||
* @param int $type The object type, either OBJ_REF_DELTA
|
||||
or OBJ_OFS_DELTA
|
||||
* @param int $size The expected size of the uncompressed data
|
||||
*
|
||||
* @return array Containing the type, size and object data
|
||||
*/
|
||||
private function _unpackDeltified($file, $offset, $object_offset, $type, $size)
|
||||
{
|
||||
fseek($file, $object_offset);
|
||||
|
||||
if ($type == self::OBJ_REF_DELTA) {
|
||||
|
||||
$base_sha = bin2hex(fread($file, 20));
|
||||
|
||||
$path = substr($this->_packfile, 0, strpos($this->_packfile, '.git')+5);
|
||||
$base = Raw::factory($path, $base_sha);
|
||||
$type = $base->type();
|
||||
$base = $base->content();
|
||||
|
||||
$delta = gzuncompress(
|
||||
fread($file, $size + self::OBJ_PADDING), $size
|
||||
);
|
||||
|
||||
$content = $this->_applyDelta($base, $delta);
|
||||
|
||||
} elseif ($type == self::OBJ_OFS_DELTA) {
|
||||
|
||||
// 20 = maximum varint size according to Glip
|
||||
$data = fread($file, $size + self::OBJ_PADDING + 20);
|
||||
|
||||
list($base_offset, $length) = $this->_bigEndianNumber($data);
|
||||
|
||||
$delta = gzuncompress(substr($data, $length), $size);
|
||||
unset($data);
|
||||
|
||||
$base_offset = $offset - $base_offset;
|
||||
list($type, $size, $base) = $this->_readPackedObject($base_offset);
|
||||
|
||||
$content = $this->_applyDelta($base, $delta);
|
||||
|
||||
} else {
|
||||
throw new UnexpectedValueException(
|
||||
"Unknown type $type for deltified object"
|
||||
);
|
||||
}
|
||||
|
||||
return array($type, strlen($content), $content);
|
||||
}
|
||||
|
||||
/**
|
||||
* Applies the $delta byte-sequence to $base and returns the
|
||||
* resultant binary string.
|
||||
*
|
||||
* This code is modified from Grit (see below), the Ruby
|
||||
* implementation used for GitHub under an MIT license.
|
||||
*
|
||||
* @param string $base The base string for the delta to be applied to
|
||||
* @param string $delta The delta string to apply
|
||||
*
|
||||
* @return string The patched binary string
|
||||
* @see
|
||||
* https://github.com/mojombo/grit/blob/master/lib/grit/git-ruby/internal/pack.rb
|
||||
*/
|
||||
private function _applyDelta($base, $delta)
|
||||
{
|
||||
$pos = 0;
|
||||
$src_size = $this->_varint($delta, $pos);
|
||||
$dst_size = $this->_varint($delta, $pos);
|
||||
|
||||
if ($src_size !== strlen($base)) {
|
||||
throw new UnexpectedValueException(
|
||||
'Expected base delta size ' . strlen($base) . ' does not match the expected '
|
||||
. "value $src_size"
|
||||
);
|
||||
}
|
||||
|
||||
$dest = "";
|
||||
while ($pos < strlen($delta)) {
|
||||
$byte = ord($delta{$pos++});
|
||||
|
||||
if ($byte & 0x80) {
|
||||
/* copy a part of $base */
|
||||
$offset = 0;
|
||||
if ($byte & 0x01) $offset = ord($delta{$pos++});
|
||||
if ($byte & 0x02) $offset |= ord($delta{$pos++}) << 8;
|
||||
if ($byte & 0x04) $offset |= ord($delta{$pos++}) << 16;
|
||||
if ($byte & 0x08) $offset |= ord($delta{$pos++}) << 24;
|
||||
$length = 0;
|
||||
if ($byte & 0x10) $length = ord($delta{$pos++});
|
||||
if ($byte & 0x20) $length |= ord($delta{$pos++}) << 8;
|
||||
if ($byte & 0x40) $length |= ord($delta{$pos++}) << 16;
|
||||
if ($length == 0) $length = 0x10000;
|
||||
$dest .= substr($base, $offset, $length);
|
||||
} else {
|
||||
/* take the next $byte bytes as they are */
|
||||
$dest .= substr($delta, $pos, $byte);
|
||||
$pos += $byte;
|
||||
}
|
||||
}
|
||||
|
||||
if (strlen($dest) !== $dst_size) {
|
||||
throw new UnexpectedValueException(
|
||||
"Deltified string expected to be $dst_size bytes, but actually "
|
||||
. strlen($dest) . ' bytes'
|
||||
);
|
||||
}
|
||||
|
||||
return $dest;
|
||||
}
|
||||
|
||||
/**
|
||||
* Parse a Git varint (variable-length integer). Used in the `_applyDelta()`
|
||||
* method to read the delta header.
|
||||
*
|
||||
* @param string $string The string to parse
|
||||
* @param int &$pos The position in the string to read from
|
||||
*
|
||||
* @return int The integer value
|
||||
*/
|
||||
private function _varint($string, &$pos = 0)
|
||||
{
|
||||
$varint = 0;
|
||||
$bitmask = 0x80;
|
||||
for ($i = 0; $bitmask & 0x80; $i += 7) {
|
||||
$bitmask = ord($string{$pos++});
|
||||
$varint |= (($bitmask & 0x7F) << $i);
|
||||
}
|
||||
return $varint;
|
||||
}
|
||||
|
||||
/**
|
||||
* Decodes a big endian modified base 128 number (refer to @see tag); this only
|
||||
* appears to be used in one place, the offset delta in packfiles. The offset
|
||||
* is the number of bytes to seek back from the start of the delta object to find
|
||||
* the base object.
|
||||
*
|
||||
* This code has been implemented using the C code given in the @see tag below.
|
||||
*
|
||||
* @param string &$data The data to read from and decode the number
|
||||
*
|
||||
* @return Array Containing the base offset (number of bytes to seek back) and
|
||||
* the length to use when reading the delta
|
||||
* @see http://git.rsbx.net/Documents/Git_Data_Formats.txt
|
||||
*/
|
||||
private function _bigEndianNumber(&$data)
|
||||
{
|
||||
$i = 0;
|
||||
$byte = ord($data{$i++});
|
||||
$number = $byte & 0x7F;
|
||||
while ($byte & 0x80) {
|
||||
$byte = ord($data{$i++});
|
||||
$number = (($number + 1) << 7) | ($byte & 0x7F);
|
||||
}
|
||||
|
||||
return array($number, $i);
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,153 @@
|
|||
<?php
|
||||
/**
|
||||
* Raw - provides a raw Git object
|
||||
*
|
||||
* PHP version 5.3
|
||||
*
|
||||
* @category Git
|
||||
* @package Granite
|
||||
* @author Craig Roberts <craig0990@googlemail.com>
|
||||
* @license http://www.opensource.org/licenses/mit-license.php MIT Expat License
|
||||
* @link http://craig0990.github.com/Granite/
|
||||
*/
|
||||
|
||||
namespace Granite\Git\Object;
|
||||
use \InvalidArgumentException as InvalidArgumentException;
|
||||
|
||||
/**
|
||||
* Raw represents a raw Git object, using Index to locate
|
||||
* packed objects.
|
||||
*
|
||||
* @category Git
|
||||
* @package Granite
|
||||
* @author Craig Roberts <craig0990@googlemail.com>
|
||||
* @license http://www.opensource.org/licenses/mit-license.php MIT Expat License
|
||||
* @link http://craig0990.github.com/Granite/
|
||||
*/
|
||||
class Raw
|
||||
{
|
||||
/**
|
||||
* Integer values for Git objects
|
||||
* @see http://book.git-scm.com/7_the_packfile.html
|
||||
*/
|
||||
const OBJ_COMMIT = 1;
|
||||
const OBJ_TREE = 2;
|
||||
const OBJ_BLOB = 3;
|
||||
const OBJ_TAG = 4;
|
||||
const OBJ_OFS_DELTA = 6;
|
||||
const OBJ_REF_DELTA = 7;
|
||||
|
||||
/**
|
||||
* The SHA-1 id of the requested object
|
||||
*/
|
||||
protected $sha;
|
||||
/**
|
||||
* The type of the requested object (see class constants)
|
||||
*/
|
||||
protected $type;
|
||||
/**
|
||||
* The binary string content of the requested object
|
||||
*/
|
||||
protected $content;
|
||||
|
||||
/**
|
||||
* Returns an instance of a raw Git object
|
||||
*
|
||||
* @param string $path The path to the repository root
|
||||
* @param string $sha The SHA-1 id of the requested object
|
||||
*
|
||||
* @return Packed|Loose
|
||||
*/
|
||||
public static function factory($path, $sha)
|
||||
{
|
||||
$loose_path = $path
|
||||
. 'objects/'
|
||||
. substr($sha, 0, 2)
|
||||
. '/'
|
||||
. substr($sha, 2);
|
||||
if (file_exists($loose_path)) {
|
||||
return new Loose($path, $sha);
|
||||
} else {
|
||||
return self::_findPackedObject($path, $sha);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the raw content of the Git object requested
|
||||
*
|
||||
* @return string Raw object content
|
||||
*/
|
||||
public function content()
|
||||
{
|
||||
return $this->content;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the size of the Git object
|
||||
*
|
||||
* @return int The size of the object in bytes
|
||||
*/
|
||||
public function size()
|
||||
{
|
||||
return strlen($this->content);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the type of the object as either commit, tag, blob or tree
|
||||
*
|
||||
* @return string The object type
|
||||
*/
|
||||
public function type()
|
||||
{
|
||||
return $this->type;
|
||||
}
|
||||
|
||||
/**
|
||||
* Searches a packfile for the SHA id and reads the object from the packfile
|
||||
*
|
||||
* @param string $path The path to the repository
|
||||
* @param string $sha The SHA-1 id of the object being requested
|
||||
*
|
||||
* @throws \InvalidArgumentException
|
||||
* @return array An array containing the type, size and object data
|
||||
*/
|
||||
private static function _findPackedObject($path, $sha)
|
||||
{
|
||||
$packfiles = glob(
|
||||
$path
|
||||
. 'objects'
|
||||
. DIRECTORY_SEPARATOR
|
||||
. 'pack'
|
||||
. DIRECTORY_SEPARATOR
|
||||
. 'pack-*.pack'
|
||||
);
|
||||
|
||||
$offset = false;
|
||||
foreach ($packfiles as $packfile) {
|
||||
$packname = substr(basename($packfile, '.pack'), 5);
|
||||
$idx = new Index($path, $packname);
|
||||
$offset = $idx->find($sha);
|
||||
|
||||
if ($offset !== false) {
|
||||
break; // Found it
|
||||
}
|
||||
}
|
||||
|
||||
if ($offset == false) {
|
||||
throw new InvalidArgumentException("Could not find packed object $sha");
|
||||
}
|
||||
|
||||
$packname = $path
|
||||
. 'objects'
|
||||
. DIRECTORY_SEPARATOR
|
||||
. 'pack'
|
||||
. DIRECTORY_SEPARATOR
|
||||
. 'pack-' . $packname . '.pack';
|
||||
$object = new Packed($packname, $offset);
|
||||
|
||||
return $object;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
?>
|
||||
|
|
@ -0,0 +1,293 @@
|
|||
<?php
|
||||
/**
|
||||
* Repository - provides a 'repository' object with a set of helper methods
|
||||
*
|
||||
* PHP version 5.3
|
||||
*
|
||||
* @category Git
|
||||
* @package Granite
|
||||
* @author Craig Roberts <craig0990@googlemail.com>
|
||||
* @license http://www.opensource.org/licenses/mit-license.php MIT Expat License
|
||||
* @link http://craig0990.github.com/Granite/
|
||||
*/
|
||||
|
||||
namespace Granite\Git;
|
||||
use \InvalidArgumentException as InvalidArgumentException;
|
||||
use \UnexpectedValueException as UnexpectedValueException;
|
||||
|
||||
/**
|
||||
* Repository represents a Git repository, providing a variety of methods for
|
||||
* fetching objects from SHA-1 ids or the tip of a branch with `head()`
|
||||
*
|
||||
* @category Git
|
||||
* @package Granite
|
||||
* @author Craig Roberts <craig0990@googlemail.com>
|
||||
* @license http://www.opensource.org/licenses/mit-license.php MIT Expat License
|
||||
* @link http://craig0990.github.com/Granite/
|
||||
*/
|
||||
class Repository
|
||||
{
|
||||
|
||||
/**
|
||||
* The path to the repository root
|
||||
*/
|
||||
private $_path;
|
||||
/**
|
||||
* The indexed version of a commit, ready to write with `commit()`
|
||||
*/
|
||||
private $idx_commit;
|
||||
/**
|
||||
* The indexed version of a tree, modified to with `add()` and `remove()`
|
||||
*/
|
||||
private $idx_tree;
|
||||
|
||||
/**
|
||||
* Sets the repository path
|
||||
*
|
||||
* @param string $path The path to the repository root (i.e. /repo/.git/)
|
||||
*/
|
||||
public function __construct($path)
|
||||
{
|
||||
if (!is_dir($path)) {
|
||||
throw new InvalidArgumentException("Unable to find directory $path");
|
||||
} elseif (!is_readable($path)) {
|
||||
throw new InvalidArgumentException("Unable to read directory $path");
|
||||
} elseif (!is_dir($path . DIRECTORY_SEPARATOR . 'objects')
|
||||
|| !is_dir($path . DIRECTORY_SEPARATOR . 'refs')
|
||||
) {
|
||||
throw new UnexpectedValueException(
|
||||
"Invalid directory, could not find 'objects' or 'refs' in $path"
|
||||
);
|
||||
}
|
||||
|
||||
$this->_path = $path;
|
||||
$this->idx_commit = $this->factory('commit');
|
||||
$this->idx_tree = $this->factory('tree');
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an object from the Repository of the given type, with the given
|
||||
* SHA-1 id, or false if it cannot be found
|
||||
*
|
||||
* @param string $type The type (blob, commit, tag or tree) of object being
|
||||
* requested
|
||||
* @param string $sha The SHA-1 id of the object (or the name of a tag)
|
||||
*
|
||||
* @return Blob|Commit|Tag|Tree
|
||||
*/
|
||||
public function factory($type, $sha = null)
|
||||
{
|
||||
if (!in_array($type, array('blob', 'commit', 'tag', 'tree'))) {
|
||||
throw new InvalidArgumentException("Invalid type: $type");
|
||||
}
|
||||
|
||||
if ($type == 'tag') {
|
||||
$sha = $this->_ref('tags' . DIRECTORY_SEPARATOR . $sha);
|
||||
}
|
||||
$type = 'Granite\\Git\\' . ucwords($type);
|
||||
|
||||
return new $type($this->_path, $sha);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a Commit object representing the HEAD commit
|
||||
*
|
||||
* @param string $branch The branch name to lookup, defaults to 'master'
|
||||
*
|
||||
* @return Commit An object representing the HEAD commit
|
||||
*/
|
||||
public function head($branch = 'master', $value = NULL)
|
||||
{
|
||||
if ($value == NULL)
|
||||
return $this->factory(
|
||||
'commit', $this->_ref('heads' . DIRECTORY_SEPARATOR . $branch)
|
||||
);
|
||||
|
||||
file_put_contents(
|
||||
$this->_path . DIRECTORY_SEPARATOR
|
||||
. 'refs' . DIRECTORY_SEPARATOR
|
||||
. 'heads' . DIRECTORY_SEPARATOR . 'master',
|
||||
$value
|
||||
);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a string representing the repository's location, which may or may
|
||||
* not be initialised
|
||||
*
|
||||
* @return string A string representing the repository's location
|
||||
*/
|
||||
public function path()
|
||||
{
|
||||
return $this->_path;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an array of the local branches under `refs/heads`
|
||||
*
|
||||
* @return array
|
||||
*/
|
||||
public function tags()
|
||||
{
|
||||
return $this->_refs('tags');
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an array of the local tags under `refs/tags`
|
||||
*
|
||||
* @return array
|
||||
*/
|
||||
public function branches()
|
||||
{
|
||||
return $this->_refs('heads');
|
||||
}
|
||||
|
||||
private function _refs($type)
|
||||
{
|
||||
$dir = $this->_path . 'refs' . DIRECTORY_SEPARATOR . $type;
|
||||
$refs = glob($dir . DIRECTORY_SEPARATOR . '*');
|
||||
foreach ($refs as &$ref) {
|
||||
$ref = basename($ref);
|
||||
}
|
||||
return $refs;
|
||||
}
|
||||
|
||||
/**
|
||||
* Initialises a Git repository
|
||||
*
|
||||
* @return boolean Returns true on success, false on error
|
||||
*/
|
||||
public static function init($path)
|
||||
{
|
||||
$path .= '/';
|
||||
if (!is_dir($path)) {
|
||||
mkdir($path);
|
||||
} elseif (is_dir($path . 'objects')) {
|
||||
return false;
|
||||
}
|
||||
|
||||
mkdir($path . 'objects');
|
||||
mkdir($path . 'objects/info');
|
||||
mkdir($path . 'objects/pack');
|
||||
mkdir($path . 'refs');
|
||||
mkdir($path . 'refs/heads');
|
||||
mkdir($path . 'refs/tags');
|
||||
|
||||
file_put_contents($path . 'HEAD', 'ref: refs/heads/master');
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Writes the indexed commit to disk, with blobs added/removed via `add()` and
|
||||
* `rm()`
|
||||
*
|
||||
* @param string $message The commit message
|
||||
* @param string $author The author name
|
||||
*
|
||||
* @return boolean True on success, or false on failure
|
||||
*/
|
||||
public function commit($message, $author)
|
||||
{
|
||||
$user_string = $username . ' ' . time() . ' +0000';
|
||||
|
||||
try {
|
||||
$parents = array($this->repo->head()->sha());
|
||||
} catch (InvalidArgumentException $e) {
|
||||
$parents = array();
|
||||
}
|
||||
|
||||
$this->idx_commit->message($message);
|
||||
$this->idx_commit->author($user_string);
|
||||
$this->idx_commit->committer($user_string);
|
||||
$this->idx_commit->tree($this->idx_tree);
|
||||
$commit->parents($parents);
|
||||
|
||||
$this->idx_tree->write();
|
||||
$this->idx_commit->write();
|
||||
|
||||
$this->repo->head('master', $this->idx_commit->sha());
|
||||
|
||||
$this->idx_commit = $this->factory('commit');
|
||||
$this->idx_tree = $this->factory('tree');
|
||||
}
|
||||
|
||||
/**
|
||||
* Adds a file to the indexed commit, to be written to disk with `commit()`
|
||||
*
|
||||
* @param string $filename The filename to save it under
|
||||
* @param Granite\Git\Blob $blob The raw blob object to add to the tree
|
||||
*/
|
||||
public function add($filename, Granite\Git\Blob $blob)
|
||||
{
|
||||
$blob->write();
|
||||
$nodes = $this->idx_tree->nodes();
|
||||
$nodes[$filename] = new Granite\Git\Tree\Node($filename, '100644', $blob->sha());
|
||||
$this->idx_tree->nodes($nodes);
|
||||
}
|
||||
|
||||
/**
|
||||
* Removes a file from the indexed commit
|
||||
*/
|
||||
public function rm($filename)
|
||||
{
|
||||
$nodes = $this->idx_tree->nodes();
|
||||
unset($nodes[$filename]);
|
||||
$this->idx_tree->nodes($nodes);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an SHA-1 id of the ref resource
|
||||
*
|
||||
* @param string $ref The ref name to lookup
|
||||
*
|
||||
* @return string An SHA-1 id of the ref resource
|
||||
*/
|
||||
private function _ref($ref)
|
||||
{
|
||||
// All refs are stored in `.git/refs`
|
||||
$file = $this->_path . 'refs' . DIRECTORY_SEPARATOR . $ref;
|
||||
|
||||
if (file_exists($file)) {
|
||||
return trim(file_get_contents($file));
|
||||
}
|
||||
|
||||
$sha = $this->_packedRef($ref);
|
||||
|
||||
if ($sha == false) {
|
||||
throw new InvalidArgumentException("The ref $ref could not be found");
|
||||
}
|
||||
|
||||
return $sha;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an SHA-1 id of the ref resource, or false if it cannot be found
|
||||
*
|
||||
* @param string $ref The ref name to lookup
|
||||
*
|
||||
* @return string An SHA-1 id of the ref resource
|
||||
*/
|
||||
private function _packedRef($ref)
|
||||
{
|
||||
$sha = false;
|
||||
if (file_exists($this->_path . 'packed-refs')) {
|
||||
$file = fopen($this->_path . 'packed-refs', 'r');
|
||||
|
||||
while (($line = fgets($file)) !== false) {
|
||||
$info = explode(' ', $line);
|
||||
if (count($info) == 2
|
||||
&& trim($info[1]) == 'refs' . DIRECTORY_SEPARATOR . $ref
|
||||
) {
|
||||
$sha = trim($info[0]);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
fclose($file);
|
||||
}
|
||||
|
||||
return $sha;
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,38 @@
|
|||
<?php
|
||||
/**
|
||||
* Tag - provides a 'tag' object
|
||||
*
|
||||
* PHP version 5.3
|
||||
*
|
||||
* @category Git
|
||||
* @package Granite
|
||||
* @author Craig Roberts <craig0990@googlemail.com>
|
||||
* @license http://www.opensource.org/licenses/mit-license.php MIT Expat License
|
||||
* @link http://craig0990.github.com/Granite/
|
||||
*/
|
||||
|
||||
namespace Granite\Git;
|
||||
|
||||
/**
|
||||
* Tag represents a full tag object
|
||||
*
|
||||
* @category Git
|
||||
* @package Granite
|
||||
* @author Craig Roberts <craig0990@googlemail.com>
|
||||
* @license http://www.opensource.org/licenses/mit-license.php MIT Expat License
|
||||
* @link http://craig0990.github.com/Granite/
|
||||
*/
|
||||
class Tag
|
||||
{
|
||||
|
||||
public function __construct($path, $sha)
|
||||
{
|
||||
$this->sha = $sha;
|
||||
}
|
||||
|
||||
public function sha()
|
||||
{
|
||||
return $this->sha;
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,198 @@
|
|||
<?php
|
||||
/**
|
||||
* Tree - provides a 'tree' object
|
||||
*
|
||||
* PHP version 5.3
|
||||
*
|
||||
* @category Git
|
||||
* @package Granite
|
||||
* @author Craig Roberts <craig0990@googlemail.com>
|
||||
* @license http://www.opensource.org/licenses/mit-license.php MIT Expat License
|
||||
* @link http://craig0990.github.com/Granite/
|
||||
*/
|
||||
|
||||
namespace Granite\Git;
|
||||
use \Granite\Git\Tree\Node as Node;
|
||||
|
||||
/**
|
||||
* Tree represents a full tree object, with nodes pointing to other tree objects
|
||||
* and file blobs
|
||||
*
|
||||
* @category Git
|
||||
* @package Granite
|
||||
* @author Craig Roberts <craig0990@googlemail.com>
|
||||
* @license http://www.opensource.org/licenses/mit-license.php MIT Expat License
|
||||
* @link http://craig0990.github.com/Granite/
|
||||
*/
|
||||
class Tree
|
||||
{
|
||||
|
||||
/**
|
||||
* The SHA-1 id of the requested tree
|
||||
*/
|
||||
private $sha;
|
||||
/**
|
||||
* The nodes/entries for the requested tree
|
||||
*/
|
||||
private $nodes = array();
|
||||
/**
|
||||
* The path to the repository
|
||||
*/
|
||||
private $path;
|
||||
|
||||
/**
|
||||
* Reads a tree object by fetching the raw object
|
||||
*
|
||||
* @param string $path The path to the repository root
|
||||
* @param string $sha The SHA-1 id of the requested object
|
||||
*/
|
||||
public function __construct($path, $sha = NULL, $dbg = FALSE)
|
||||
{
|
||||
$this->path = $path;
|
||||
if ($sha !== NULL) {
|
||||
$object = Object\Raw::factory($path, $sha);
|
||||
$this->sha = $sha;
|
||||
|
||||
if ($object->type() !== Object\Raw::OBJ_TREE) {
|
||||
throw new \InvalidArgumentException(
|
||||
"The object $sha is not a tree, type is " . $object->type()
|
||||
);
|
||||
}
|
||||
|
||||
$content = $object->content();
|
||||
file_put_contents('/tmp/tree_from_real_repo'.time(), $content);
|
||||
$nodes = array();
|
||||
|
||||
for ($i = 0; $i < strlen($content); $i = $data_start + 21) {
|
||||
$data_start = strpos($content, "\0", $i);
|
||||
$info = substr($content, $i, $data_start-$i);
|
||||
list($mode, $name) = explode(' ', $info, 2);
|
||||
// Read the object SHA-1 id
|
||||
$sha = bin2hex(substr($content, $data_start + 1, 20));
|
||||
|
||||
$this->nodes[$name] = new Node($name, $mode, $sha);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an array of Tree and Granite\Git\Blob objects,
|
||||
* representing subdirectories and files
|
||||
*
|
||||
* @return array Array of Tree and Granite\Git\Blob objects
|
||||
*/
|
||||
public function nodes($nodes = null)
|
||||
{
|
||||
if ($nodes == null) {
|
||||
return $this->nodes;
|
||||
}
|
||||
$this->nodes = $nodes;
|
||||
}
|
||||
|
||||
/**
|
||||
* Adds a blob or a tree to the list of nodes
|
||||
*
|
||||
* @param string $name The basename (filename) of the blob or tree
|
||||
* @param string $mode The mode of the blob or tree (see above)
|
||||
* @param string $sha The SHA-1 id of the blob or tree to add
|
||||
*/
|
||||
public function add($name, $mode, $sha)
|
||||
{
|
||||
$this->nodes[$name] = new Node($name, $mode, $sha);
|
||||
uasort($this->nodes, array($this, '_sort'));
|
||||
}
|
||||
|
||||
public function write()
|
||||
{
|
||||
$sha = $this->sha();
|
||||
$path = $this->path
|
||||
. 'objects'
|
||||
. DIRECTORY_SEPARATOR
|
||||
. substr($sha, 0, 2)
|
||||
. DIRECTORY_SEPARATOR
|
||||
. substr($sha, 2);
|
||||
// FIXME: currently writes loose objects only
|
||||
if (file_exists($path)) {
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if (!is_dir(dirname($path))) {
|
||||
mkdir(dirname($path), 0777, TRUE);
|
||||
}
|
||||
|
||||
$loose = fopen($path, 'wb');
|
||||
$data = $this->_raw();
|
||||
$data = 'tree ' . strlen($data) . "\0" . $data;
|
||||
$write = fwrite($loose, gzcompress($data));
|
||||
fclose($loose);
|
||||
|
||||
return ($write !== FALSE);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the SHA-1 id of the Tree
|
||||
*
|
||||
* @return string SHA-1 id of the Tree
|
||||
*/
|
||||
public function sha()
|
||||
{
|
||||
$data = $this->_raw();
|
||||
$raw = 'tree ' . strlen($data) . "\0" . $data;
|
||||
$this->sha = hash('sha1', $raw);
|
||||
return $this->sha;
|
||||
}
|
||||
|
||||
/**
|
||||
* Generates the raw object content to be saved to disk
|
||||
*/
|
||||
public function _raw()
|
||||
{
|
||||
uasort($this->nodes, array($this, '_sort'));
|
||||
$data = '';
|
||||
foreach ($this->nodes as $node)
|
||||
{
|
||||
$data .= base_convert($node->mode(), 10, 8) . ' ' . $node->name() . "\0";
|
||||
$data .= pack('H40', $node->sha());
|
||||
}
|
||||
file_put_contents('/tmp/tree_made'.time(), $data);
|
||||
return $data;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sorts the node entries in a tree, general sort method adapted from original
|
||||
* Git C code (see @see tag below).
|
||||
*
|
||||
* @return 1, 0 or -1 if the first entry is greater than, the same as, or less
|
||||
* than the second, respectively.
|
||||
* @see https://github.com/gitster/git/blob/master/read-cache.c Around line 352,
|
||||
* the `base_name_compare` function
|
||||
*/
|
||||
public function _sort(&$a, &$b)
|
||||
{
|
||||
$length = strlen($a->name()) < strlen($b->name()) ? strlen($a->name()) : strlen($b->name());
|
||||
|
||||
$cmp = strncmp($a->name(), $b->name(), $length);
|
||||
if ($cmp) {
|
||||
return $cmp;
|
||||
}
|
||||
|
||||
$suffix1 = $a->name();
|
||||
$suffix1 = (strlen($suffix1) > $length) ? $suffix1{$length} : FALSE;
|
||||
$suffix2 = $b->name();
|
||||
$suffix2 = (strlen($suffix2) > $length) ? $suffix2{$length} : FALSE;
|
||||
if (!$suffix1 && $a->isDirectory()) {
|
||||
$suffix1 = '/';
|
||||
}
|
||||
if (!$suffix2 && $b->isDirectory()) {
|
||||
$suffix2 = '/';
|
||||
}
|
||||
if ($suffix1 < $suffix2) {
|
||||
return -1;
|
||||
} elseif ($suffix1 > $suffix2) {
|
||||
return 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,126 @@
|
|||
<?php
|
||||
/**
|
||||
* Node - provides a tree node object for tree entries
|
||||
*
|
||||
* PHP version 5.3
|
||||
*
|
||||
* @category Git
|
||||
* @package Granite
|
||||
* @author Craig Roberts <craig0990@googlemail.com>
|
||||
* @license http://www.opensource.org/licenses/mit-license.php MIT Expat License
|
||||
* @link http://craig0990.github.com/Granite/
|
||||
*/
|
||||
|
||||
namespace Granite\Git\Tree;
|
||||
|
||||
/**
|
||||
* Node represents an entry in a Tree
|
||||
*
|
||||
* @category Git
|
||||
* @package Granite
|
||||
* @author Craig Roberts <craig0990@googlemail.com>
|
||||
* @license http://www.opensource.org/licenses/mit-license.php MIT Expat License
|
||||
* @link http://craig0990.github.com/Granite/
|
||||
*/
|
||||
class Node
|
||||
{
|
||||
|
||||
/**
|
||||
* Name of the file, directory or submodule
|
||||
*/
|
||||
private $_name;
|
||||
/**
|
||||
* Mode of the object, in octal
|
||||
*/
|
||||
private $_mode;
|
||||
/**
|
||||
* SHA-1 id of the tree
|
||||
*/
|
||||
private $_sha;
|
||||
/**
|
||||
* Boolean value for whether the entry represents a directory
|
||||
*/
|
||||
private $_is_dir;
|
||||
/**
|
||||
* Boolean value for whether the entry represents a submodule
|
||||
*/
|
||||
private $_is_submodule;
|
||||
|
||||
/**
|
||||
* Sets up a Node class with properties corresponding to the $mode parameter
|
||||
*
|
||||
* @param string $name The name of the object (file, directory or submodule name)
|
||||
* @param int $mode The mode of the object, retrieved from the repository
|
||||
* @param string $sha The SHA-1 id of the object
|
||||
*/
|
||||
public function __construct($name, $mode, $sha)
|
||||
{
|
||||
$this->_name = $name;
|
||||
$this->_mode = intval($mode, 8);
|
||||
$this->_sha = $sha;
|
||||
|
||||
$this->_is_dir = (bool) ($this->_mode & 0x4000);
|
||||
$this->_is_submodule = ($this->_mode == 0xE000);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a boolean value indicating whether the node is a directory
|
||||
*
|
||||
* @return boolean
|
||||
*/
|
||||
public function isDirectory()
|
||||
{
|
||||
return $this->_is_dir;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a boolean value indicating whether the node is a submodule
|
||||
*
|
||||
* @return boolean
|
||||
*/
|
||||
public function isSubmodule()
|
||||
{
|
||||
return $this->_is_submodule;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the object name
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
public function name()
|
||||
{
|
||||
return $this->_name;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the object's SHA-1 id
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
public function sha()
|
||||
{
|
||||
return $this->_sha;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the octal value of the file mode
|
||||
*
|
||||
* @return int
|
||||
*/
|
||||
public function mode()
|
||||
{
|
||||
return $this->_mode;
|
||||
}
|
||||
|
||||
public function type()
|
||||
{
|
||||
if ($this->isDirectory()) {
|
||||
return 'tree';
|
||||
} elseif ($this->isSubmodule()) {
|
||||
return 'commit';
|
||||
} else {
|
||||
return 'blob';
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,12 @@
|
|||
<?php
|
||||
/**
|
||||
* Copyright (c) 2011 Craig Roberts craig0990@googlemail.com
|
||||
* This file is licensed under the Affero General Public License version 3 or
|
||||
* later.
|
||||
*/
|
||||
require_once('../../../lib/base.php');
|
||||
|
||||
OC_JSON::checkLoggedIn();
|
||||
// Fetch current commit (or HEAD if not yet set)
|
||||
$head = OC_Preferences::getValue(OC_User::getUser(), 'files_versioning', 'head', 'HEAD');
|
||||
OC_JSON::encodedPrint(array("head" => $head));
|
||||
|
|
@ -0,0 +1,14 @@
|
|||
<?php
|
||||
/**
|
||||
* Copyright (c) 2011 Craig Roberts craig0990@googlemail.com
|
||||
* This file is licensed under the Affero General Public License version 3 or
|
||||
* later.
|
||||
*/
|
||||
require_once('../../../lib/base.php');
|
||||
OC_JSON::checkLoggedIn();
|
||||
if(isset($_POST["file_versioning_head"])){
|
||||
OC_Preferences::setValue(OC_User::getUser(), 'files_versioning', 'head', $_POST["file_versioning_head"]);
|
||||
OC_JSON::success();
|
||||
}else{
|
||||
OC_JSON::error();
|
||||
}
|
||||
|
|
@ -0,0 +1,20 @@
|
|||
<?php
|
||||
|
||||
// Include required files
|
||||
require_once('apps/files_versioning/versionstorage.php');
|
||||
require_once('apps/files_versioning/versionwrapper.php');
|
||||
// Register streamwrapper for versioned:// paths
|
||||
stream_wrapper_register('versioned', 'OC_VersionStreamWrapper');
|
||||
|
||||
// Add an entry in the app list for versioning and backup
|
||||
OC_App::register( array(
|
||||
'order' => 10,
|
||||
'id' => 'files_versioning',
|
||||
'name' => 'Versioning and Backup' ));
|
||||
|
||||
// Include stylesheets for the settings page
|
||||
OC_Util::addStyle( 'files_versioning', 'settings' );
|
||||
OC_Util::addScript('files_versioning','settings');
|
||||
|
||||
// Register a settings section in the Admin > Personal page
|
||||
OC_APP::registerPersonal('files_versioning','settings');
|
||||
|
|
@ -0,0 +1,14 @@
|
|||
<?xml version="1.0"?>
|
||||
<info>
|
||||
<id>files_versioning</id>
|
||||
<name>Versioning and Backup</name>
|
||||
<version>1.0.0</version>
|
||||
<licence>GPLv2</licence>
|
||||
<author>Craig Roberts</author>
|
||||
<require>3</require>
|
||||
<description>Versions files using Git repositories, providing a simple backup facility. Currently in *beta* and explicitly without warranty of any kind.</description>
|
||||
<default_enable/>
|
||||
<types>
|
||||
<filesystem/>
|
||||
</types>
|
||||
</info>
|
||||
|
|
@ -0,0 +1,3 @@
|
|||
#file_versioning_commit_chzn {
|
||||
width: 15em;
|
||||
}
|
||||
|
|
@ -0,0 +1,25 @@
|
|||
$(document).ready(function(){
|
||||
$('#file_versioning_head').chosen();
|
||||
|
||||
$.getJSON(OC.filePath('files_versioning', 'ajax', 'gethead.php'), function(jsondata, status) {
|
||||
|
||||
if (jsondata.head == 'HEAD') {
|
||||
// Most recent commit, do nothing
|
||||
} else {
|
||||
$("#file_versioning_head").val(jsondata.head);
|
||||
// Trigger the chosen update call
|
||||
// See http://harvesthq.github.com/chosen/
|
||||
$("#file_versioning_head").trigger("liszt:updated");
|
||||
}
|
||||
});
|
||||
|
||||
$('#file_versioning_head').change(function() {
|
||||
|
||||
var data = $(this).serialize();
|
||||
$.post( OC.filePath('files_versioning', 'ajax', 'sethead.php'), data, function(data){
|
||||
if(data == 'error'){
|
||||
console.log('Saving new HEAD failed');
|
||||
}
|
||||
});
|
||||
});
|
||||
});
|
||||
|
|
@ -0,0 +1,12 @@
|
|||
<?php
|
||||
|
||||
require_once(OC::$SERVERROOT . '/3rdparty/granite/git/blob.php');
|
||||
require_once(OC::$SERVERROOT . '/3rdparty/granite/git/commit.php');
|
||||
require_once(OC::$SERVERROOT . '/3rdparty/granite/git/repository.php');
|
||||
require_once(OC::$SERVERROOT . '/3rdparty/granite/git/tag.php');
|
||||
require_once(OC::$SERVERROOT . '/3rdparty/granite/git/tree.php');
|
||||
require_once(OC::$SERVERROOT . '/3rdparty/granite/git/tree/node.php');
|
||||
require_once(OC::$SERVERROOT . '/3rdparty/granite/git/object/index.php');
|
||||
require_once(OC::$SERVERROOT . '/3rdparty/granite/git/object/raw.php');
|
||||
require_once(OC::$SERVERROOT . '/3rdparty/granite/git/object/loose.php');
|
||||
require_once(OC::$SERVERROOT . '/3rdparty/granite/git/object/packed.php');
|
||||
|
|
@ -0,0 +1,34 @@
|
|||
<?php
|
||||
|
||||
// Get the full path to the repository folder (FIXME: hard-coded to 'Backup')
|
||||
$path = OC_Config::getValue('datadirectory', OC::$SERVERROOT.'/data')
|
||||
. DIRECTORY_SEPARATOR
|
||||
. OC_User::getUser()
|
||||
. DIRECTORY_SEPARATOR
|
||||
. 'files'
|
||||
. DIRECTORY_SEPARATOR
|
||||
. 'Backup'
|
||||
. DIRECTORY_SEPARATOR
|
||||
. '.git'
|
||||
. DIRECTORY_SEPARATOR;
|
||||
|
||||
$repository = new Granite\Git\Repository($path);
|
||||
|
||||
$commits = array();
|
||||
// Fetch most recent 50 commits (FIXME - haven't tested this much)
|
||||
$commit = $repository->head();
|
||||
for ($i = 0; $i < 50; $i++) {
|
||||
$commits[] = $commit;
|
||||
$parents = $commit->parents();
|
||||
if (count($parents) > 0) {
|
||||
$parent = $parents[0];
|
||||
} else {
|
||||
break;
|
||||
}
|
||||
|
||||
$commit = $repository->factory('commit', $parent);
|
||||
}
|
||||
|
||||
$tmpl = new OC_Template( 'files_versioning', 'settings');
|
||||
$tmpl->assign('commits', $commits);
|
||||
return $tmpl->fetchPage();
|
||||
|
|
@ -0,0 +1,12 @@
|
|||
<fieldset id="status_list" class="personalblock">
|
||||
<strong>Versioning and Backup</strong><br>
|
||||
<p><em>Please note: Backing up large files (around 16MB+) will cause your backup history to grow very large, very quickly.</em></p>
|
||||
<label class="bold">Backup Folder</label>
|
||||
<select name="file_versioning_head" id="file_versioning_head">
|
||||
<?php
|
||||
foreach ($_['commits'] as $commit):
|
||||
echo '<option value="' . $commit->sha() . '">' . $commit->message() . '</option>';
|
||||
endforeach;
|
||||
?>
|
||||
</select>
|
||||
</fieldset>
|
||||
|
|
@ -0,0 +1,386 @@
|
|||
<?php
|
||||
/**
|
||||
* ownCloud file storage implementation for Git repositories
|
||||
* @author Craig Roberts
|
||||
* @copyright 2012 Craig Roberts craig0990@googlemail.com
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 3 of the License, or any later version.
|
||||
*
|
||||
* This library 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 AFFERO GENERAL PUBLIC LICENSE for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Affero General Public
|
||||
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
// Include Granite
|
||||
require_once('lib_granite.php');
|
||||
|
||||
// Create a top-level 'Backup' directory if it does not already exist
|
||||
$user = OC_User::getUser();
|
||||
if (OC_Filesystem::$loaded and !OC_Filesystem::is_dir('/Backup')) {
|
||||
OC_Filesystem::mkdir('/Backup');
|
||||
OC_Preferences::setValue(OC_User::getUser(), 'files_versioning', 'head', 'HEAD');
|
||||
}
|
||||
|
||||
// Generate the repository path (currently using 'full' repositories, as opposed to bare ones)
|
||||
$repo_path = DIRECTORY_SEPARATOR
|
||||
. OC_User::getUser()
|
||||
. DIRECTORY_SEPARATOR
|
||||
. 'files'
|
||||
. DIRECTORY_SEPARATOR
|
||||
. 'Backup';
|
||||
|
||||
// Mount the 'Backup' folder using the versioned storage provider below
|
||||
OC_Filesystem::mount('OC_Filestorage_Versioned', array('repo'=>$repo_path), $repo_path . DIRECTORY_SEPARATOR);
|
||||
|
||||
class OC_Filestorage_Versioned extends OC_Filestorage {
|
||||
|
||||
/**
|
||||
* Holds an instance of Granite\Git\Repository
|
||||
*/
|
||||
protected $repo;
|
||||
|
||||
/**
|
||||
* Constructs a new OC_Filestorage_Versioned instance, expects an associative
|
||||
* array with a `repo` key set to the path of the repository's `.git` folder
|
||||
*
|
||||
* @param array $parameters An array containing the key `repo` pointing to the
|
||||
* repository path.
|
||||
*/
|
||||
public function __construct($parameters) {
|
||||
// Get the full path to the repository folder
|
||||
$path = OC_Config::getValue('datadirectory', OC::$SERVERROOT.'/data')
|
||||
. $parameters['repo']
|
||||
. DIRECTORY_SEPARATOR
|
||||
. '.git'
|
||||
. DIRECTORY_SEPARATOR;
|
||||
|
||||
try {
|
||||
// Attempt to load the repository
|
||||
$this->repo = new Granite\Git\Repository($path);
|
||||
} catch (InvalidArgumentException $e) {
|
||||
// $path is not a valid Git repository, we must create one
|
||||
Granite\Git\Repository::init($path);
|
||||
|
||||
// Load the newly-initialised repository
|
||||
$this->repo = new Granite\Git\Repository($path);
|
||||
|
||||
/**
|
||||
* Create an initial commit with a README file
|
||||
* FIXME: This functionality should be transferred to the Granite library
|
||||
*/
|
||||
$blob = new Granite\Git\Blob($this->repo->path());
|
||||
$blob->content('Your Backup directory is now ready for use.');
|
||||
|
||||
// Create a new tree to hold the README file
|
||||
$tree = $this->repo->factory('tree');
|
||||
// Create a tree node to represent the README blob
|
||||
$tree_node = new Granite\Git\Tree\Node('README', '100644', $blob->sha());
|
||||
$tree->nodes(array($tree_node->name() => $tree_node));
|
||||
|
||||
// Create an initial commit
|
||||
$commit = new Granite\Git\Commit($this->repo->path());
|
||||
$user_string = OC_User::getUser() . ' ' . time() . ' +0000';
|
||||
$commit->author($user_string);
|
||||
$commit->committer($user_string);
|
||||
$commit->message('Initial commit');
|
||||
$commit->tree($tree);
|
||||
|
||||
// Write it all to disk
|
||||
$blob->write();
|
||||
$tree->write();
|
||||
$commit->write();
|
||||
|
||||
// Update the HEAD for the 'master' branch
|
||||
$this->repo->head('master', $commit->sha());
|
||||
}
|
||||
|
||||
// Update the class pointer to the HEAD
|
||||
$head = OC_Preferences::getValue(OC_User::getUser(), 'files_versioning', 'head', 'HEAD');
|
||||
|
||||
// Load the most recent commit if the preference is not set
|
||||
if ($head == 'HEAD') {
|
||||
$this->head = $this->repo->head()->sha();
|
||||
} else {
|
||||
$this->head = $head;
|
||||
}
|
||||
}
|
||||
|
||||
public function mkdir($path) {
|
||||
if (mkdir("versioned:/{$this->repo->path()}$path#{$this->head}")) {
|
||||
$this->head = $this->repo->head()->sha();
|
||||
OC_Preferences::setValue(OC_User::getUser(), 'files_versioning', 'head', $head);
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
public function rmdir($path) {
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a directory handle to the requested path, or FALSE on failure
|
||||
*
|
||||
* @param string $path The directory path to open
|
||||
*
|
||||
* @return boolean|resource A directory handle, or FALSE on failure
|
||||
*/
|
||||
public function opendir($path) {
|
||||
return opendir("versioned:/{$this->repo->path()}$path#{$this->head}");
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns TRUE if $path is a directory, or FALSE if not
|
||||
*
|
||||
* @param string $path The path to check
|
||||
*
|
||||
* @return boolean
|
||||
*/
|
||||
public function is_dir($path) {
|
||||
return $this->filetype($path) == 'dir';
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns TRUE if $path is a file, or FALSE if not
|
||||
*
|
||||
* @param string $path The path to check
|
||||
*
|
||||
* @return boolean
|
||||
*/
|
||||
public function is_file($path) {
|
||||
return $this->filetype($path) == 'file';
|
||||
}
|
||||
|
||||
public function stat($path)
|
||||
{
|
||||
return stat("versioned:/{$this->repo->path()}$path#{$this->head}");
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the strings 'dir' or 'file', depending on the type of $path
|
||||
*
|
||||
* @param string $path The path to check
|
||||
*
|
||||
* @return string Returns 'dir' if a directory, 'file' otherwise
|
||||
*/
|
||||
public function filetype($path) {
|
||||
if ($path == "" || $path == "/") {
|
||||
return 'dir';
|
||||
} else {
|
||||
if (substr($path, -1) == '/') {
|
||||
$path = substr($path, 0, -1);
|
||||
}
|
||||
|
||||
$node = $this->tree_search($this->repo, $this->repo->factory('commit', $this->head)->tree(), $path);
|
||||
|
||||
// Does it exist, or is it new?
|
||||
if ($node == null) {
|
||||
// New file
|
||||
return 'file';
|
||||
} else {
|
||||
// Is it a tree?
|
||||
try {
|
||||
$this->repo->factory('tree', $node);
|
||||
return 'dir';
|
||||
} catch (InvalidArgumentException $e) {
|
||||
// Nope, must be a blob
|
||||
return 'file';
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
public function filesize($path) {
|
||||
return filesize("versioned:/{$this->repo->path()}$path#{$this->head}");
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a boolean value representing whether $path is readable
|
||||
*
|
||||
* @param string $path The path to check
|
||||
*(
|
||||
* @return boolean Whether or not the path is readable
|
||||
*/
|
||||
public function is_readable($path) {
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a boolean value representing whether $path is writable
|
||||
*
|
||||
* @param string $path The path to check
|
||||
*(
|
||||
* @return boolean Whether or not the path is writable
|
||||
*/
|
||||
public function is_writable($path) {
|
||||
|
||||
$head = OC_Preferences::getValue(OC_User::getUser(), 'files_versioning', 'head', 'HEAD');
|
||||
if ($head !== 'HEAD' && $head !== $this->repo->head()->sha()) {
|
||||
// Cannot modify previous commits
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a boolean value representing whether $path exists
|
||||
*
|
||||
* @param string $path The path to check
|
||||
*(
|
||||
* @return boolean Whether or not the path exists
|
||||
*/
|
||||
public function file_exists($path) {
|
||||
return file_exists("versioned:/{$this->repo->path()}$path#{$this->head}");
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an integer value representing the inode change time
|
||||
* (NOT IMPLEMENTED)
|
||||
*
|
||||
* @param string $path The path to check
|
||||
*(
|
||||
* @return int Timestamp of the last inode change
|
||||
*/
|
||||
public function filectime($path) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an integer value representing the file modification time
|
||||
*
|
||||
* @param string $path The path to check
|
||||
*(
|
||||
* @return int Timestamp of the last file modification
|
||||
*/
|
||||
public function filemtime($path) {
|
||||
return filemtime("versioned:/{$this->repo->path()}$path#{$this->head}");
|
||||
}
|
||||
|
||||
public function file_get_contents($path) {
|
||||
return file_get_contents("versioned:/{$this->repo->path()}$path#{$this->head}");
|
||||
}
|
||||
|
||||
public function file_put_contents($path, $data) {
|
||||
$success = file_put_contents("versioned:/{$this->repo->path()}$path#{$this->head}", $data);
|
||||
if ($success !== false) {
|
||||
// Update the HEAD in the preferences
|
||||
OC_Preferences::setValue(OC_User::getUser(), 'files_versioning', 'head', $this->repo->head()->sha());
|
||||
return $success;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
public function unlink($path) {
|
||||
|
||||
}
|
||||
|
||||
public function rename($path1, $path2) {
|
||||
|
||||
}
|
||||
|
||||
public function copy($path1, $path2) {
|
||||
|
||||
}
|
||||
|
||||
public function fopen($path, $mode) {
|
||||
return fopen("versioned:/{$this->repo->path()}$path#{$this->head}", $mode);
|
||||
}
|
||||
|
||||
public function getMimeType($path) {
|
||||
if ($this->filetype($path) == 'dir') {
|
||||
return 'httpd/unix-directory';
|
||||
} elseif ($this->filesize($path) == 0) {
|
||||
// File's empty, returning text/plain allows opening in the web editor
|
||||
return 'text/plain';
|
||||
} else {
|
||||
$finfo = new finfo(FILEINFO_MIME_TYPE);
|
||||
/**
|
||||
* We need to represent the repository path, the file path, and the
|
||||
* revision, which can be simply achieved with a convention of using
|
||||
* `.git` in the repository directory (bare or not) and the '#part'
|
||||
* segment of a URL to specify the revision. For example
|
||||
*
|
||||
* versioned://var/www/myrepo.git/docs/README.md#HEAD ('bare' repo)
|
||||
* versioned://var/www/myrepo/.git/docs/README.md#HEAD ('full' repo)
|
||||
* versioned://var/www/myrepo/.git/docs/README.md#6a8f...8a54 ('full' repo and SHA-1 commit ID)
|
||||
*/
|
||||
$mime = $finfo->buffer(file_get_contents("versioned:/{$this->repo->path()}$path#{$this->head}"));
|
||||
return $mime;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Generates a hash based on the file contents
|
||||
*
|
||||
* @param string $type The hashing algorithm to use (e.g. 'md5', 'sha256', etc.)
|
||||
* @param string $path The file to be hashed
|
||||
* @param boolean $raw Outputs binary data if true, lowercase hex digits otherwise
|
||||
*
|
||||
* @return string Hashed string representing the file contents
|
||||
*/
|
||||
public function hash($type, $path, $raw) {
|
||||
return hash($type, file_get_contents($path), $raw);
|
||||
}
|
||||
|
||||
public function free_space($path) {
|
||||
}
|
||||
|
||||
public function search($query) {
|
||||
|
||||
}
|
||||
|
||||
public function touch($path, $mtime=null) {
|
||||
|
||||
}
|
||||
|
||||
|
||||
public function getLocalFile($path) {
|
||||
}
|
||||
|
||||
/**
|
||||
* Recursively searches a tree for a path, returning FALSE if is not found
|
||||
* or an SHA-1 id if it is found.
|
||||
*
|
||||
* @param string $repo The repository containing the tree object
|
||||
* @param string $tree The tree object to search
|
||||
* @param string $path The path to search for (relative to the tree)
|
||||
* @param int $depth The depth of the current search (for recursion)
|
||||
*
|
||||
* @return string|boolean The SHA-1 id of the sub-tree
|
||||
*/
|
||||
private function tree_search($repo, $tree, $path, $depth = 0)
|
||||
{
|
||||
$paths = array_values(explode(DIRECTORY_SEPARATOR, $path));
|
||||
|
||||
$current_path = $paths[$depth];
|
||||
|
||||
$nodes = $tree->nodes();
|
||||
foreach ($nodes as $node) {
|
||||
if ($node->name() == $current_path) {
|
||||
|
||||
if (count($paths)-1 == $depth) {
|
||||
// Stop, found it
|
||||
return $node->sha();
|
||||
}
|
||||
|
||||
// Recurse if necessary
|
||||
if ($node->isDirectory()) {
|
||||
$tree = $this->repo->factory('tree', $node->sha());
|
||||
return $this->tree_search($repo, $tree, $path, $depth + 1);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,686 @@
|
|||
<?php
|
||||
|
||||
final class OC_VersionStreamWrapper {
|
||||
|
||||
/**
|
||||
* Determines whether or not to log debug messages with `OC_Log::write()`
|
||||
*/
|
||||
private $debug = true;
|
||||
|
||||
/**
|
||||
* The name of the ".empty" files created in new directories
|
||||
*/
|
||||
const EMPTYFILE = '.empty';
|
||||
|
||||
/**
|
||||
* Stores the current position for `readdir()` etc. calls
|
||||
*/
|
||||
private $dir_position = 0;
|
||||
|
||||
/**
|
||||
* Stores the current position for `fread()`, `fseek()` etc. calls
|
||||
*/
|
||||
private $file_position = 0;
|
||||
|
||||
/**
|
||||
* Stores the current directory tree for `readdir()` etc. directory traversal
|
||||
*/
|
||||
private $tree;
|
||||
|
||||
/**
|
||||
* Stores the current file for `fread()`, `fseek()`, etc. calls
|
||||
*/
|
||||
private $blob;
|
||||
|
||||
/**
|
||||
* Stores the current commit for `fstat()`, `stat()`, etc. calls
|
||||
*/
|
||||
private $commit;
|
||||
|
||||
/**
|
||||
* Stores the current path for `fwrite()`, `file_put_contents()` etc. calls
|
||||
*/
|
||||
private $path;
|
||||
|
||||
/**
|
||||
* Close directory handle
|
||||
*/
|
||||
public function dir_closedir() {
|
||||
unset($this->tree);
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Open directory handle
|
||||
*/
|
||||
public function dir_opendir($path, $options) {
|
||||
// Parse the URL into a repository directory, file path and commit ID
|
||||
list($this->repo, $repo_file, $this->commit) = $this->parse_url($path);
|
||||
|
||||
if ($repo_file == '' || $repo_file == '/') {
|
||||
// Set the tree property for the future `readdir()` etc. calls
|
||||
$this->tree = array_values($this->commit->tree()->nodes());
|
||||
return true;
|
||||
} elseif ($this->tree_search($this->repo, $this->commit->tree(), $repo_file) !== false) {
|
||||
// Something exists at this path, is it a directory though?
|
||||
try {
|
||||
$tree = $this->repo->factory(
|
||||
'tree',
|
||||
$this->tree_search($this->repo, $this->commit->tree(), $repo_file)
|
||||
);
|
||||
$this->tree = array_values($tree->nodes());
|
||||
return true;
|
||||
} catch (InvalidArgumentException $e) {
|
||||
// Trying to call `opendir()` on a file, return false below
|
||||
}
|
||||
}
|
||||
|
||||
// Unable to find the directory, return false
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Read entry from directory handle
|
||||
*/
|
||||
public function dir_readdir() {
|
||||
return isset($this->tree[$this->dir_position])
|
||||
? $this->tree[$this->dir_position++]->name()
|
||||
: false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Rewind directory handle
|
||||
*/
|
||||
public function dir_rewinddir() {
|
||||
$this->dir_position = 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Create a directory
|
||||
* Git doesn't track empty directories, so a ".empty" file is added instead
|
||||
*/
|
||||
public function mkdir($path, $mode, $options) {
|
||||
// Parse the URL into a repository directory, file path and commit ID
|
||||
list($this->repo, $repo_file, $this->commit) = $this->parse_url($path);
|
||||
|
||||
// Create an empty file for Git
|
||||
$empty = new Granite\Git\Blob($this->repo->path());
|
||||
$empty->content('');
|
||||
$empty->write();
|
||||
|
||||
if (dirname($repo_file) == '.') {
|
||||
// Adding a new directory to the root tree
|
||||
$tree = $this->repo->head()->tree();
|
||||
} else {
|
||||
$tree = $this->repo->factory('tree', $this->tree_search(
|
||||
$this->repo, $this->repo->head()->tree(), dirname($repo_file)
|
||||
)
|
||||
);
|
||||
}
|
||||
|
||||
// Create our new tree, with our empty file
|
||||
$dir = $this->repo->factory('tree');
|
||||
$nodes = array();
|
||||
$nodes[self::EMPTYFILE] = new Granite\Git\Tree\Node(self::EMPTYFILE, '100644', $empty->sha());
|
||||
$dir->nodes($nodes);
|
||||
$dir->write();
|
||||
|
||||
// Add our new tree to its parent
|
||||
$nodes = $tree->nodes();
|
||||
$nodes[basename($repo_file)] = new Granite\Git\Tree\Node(basename($repo_file), '040000', $dir->sha());
|
||||
$tree->nodes($nodes);
|
||||
$tree->write();
|
||||
|
||||
// We need to recursively update each parent tree, since they are all
|
||||
// hashed and the changes will cascade back up the chain
|
||||
|
||||
// So, we're currently at the bottom-most directory
|
||||
$current_dir = dirname($repo_file);
|
||||
$previous_tree = $tree;
|
||||
|
||||
if ($current_dir !== '.') {
|
||||
do {
|
||||
// Determine the parent directory
|
||||
$previous_dir = $current_dir;
|
||||
$current_dir = dirname($current_dir);
|
||||
|
||||
$current_tree = $current_dir !== '.'
|
||||
? $this->repo->factory(
|
||||
'tree', $this->tree_search(
|
||||
$this->repo,
|
||||
$this->repo->head()->tree(),
|
||||
$current_dir
|
||||
)
|
||||
)
|
||||
: $this->repo->head()->tree();
|
||||
|
||||
$current_nodes = $current_tree->nodes();
|
||||
$current_nodes[basename($previous_dir)] = new Granite\Git\Tree\Node(
|
||||
basename($previous_dir), '040000', $previous_tree->sha()
|
||||
);
|
||||
$current_tree->nodes($current_nodes);
|
||||
$current_tree->write();
|
||||
|
||||
$previous_tree = $current_tree;
|
||||
} while ($current_dir !== '.');
|
||||
|
||||
$tree = $previous_tree;
|
||||
}
|
||||
|
||||
// Create a new commit to represent this write
|
||||
$commit = $this->repo->factory('commit');
|
||||
$username = OC_User::getUser();
|
||||
$user_string = $username . ' ' . time() . ' +0000';
|
||||
$commit->author($user_string);
|
||||
$commit->committer($user_string);
|
||||
$commit->message("$username created the `$repo_file` directory, " . date('d F Y H:i', time()) . '.');
|
||||
$commit->parents(array($this->repo->head()->sha()));
|
||||
$commit->tree($tree);
|
||||
|
||||
// Write it to disk
|
||||
$commit->write();
|
||||
|
||||
// Update the HEAD for the 'master' branch
|
||||
$this->repo->head('master', $commit->sha());
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Renames a file or directory
|
||||
*/
|
||||
public function rename($path_from, $path_to) {
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Removes a directory
|
||||
*/
|
||||
public function rmdir($path, $options) {
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Retrieve the underlaying resource (NOT IMPLEMENTED)
|
||||
*/
|
||||
public function stream_cast($cast_as) {
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Close a resource
|
||||
*/
|
||||
public function stream_close() {
|
||||
unset($this->blob);
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Tests for end-of-file on a file pointer
|
||||
*/
|
||||
public function stream_eof() {
|
||||
return !($this->file_position < strlen($this->blob));
|
||||
}
|
||||
|
||||
/**
|
||||
* Flushes the output (NOT IMPLEMENTED)
|
||||
*/
|
||||
public function stream_flush() {
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Advisory file locking (NOT IMPLEMENTED)
|
||||
*/
|
||||
public function stream_lock($operation) {
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Change stream options (NOT IMPLEMENTED)
|
||||
* Called in response to `chgrp()`, `chown()`, `chmod()` and `touch()`
|
||||
*/
|
||||
public function stream_metadata($path, $option, $var) {
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Opens file or URL
|
||||
*/
|
||||
public function stream_open($path, $mode, $options, &$opened_path) {
|
||||
// Store the path, so we can use it later in `stream_write()` if necessary
|
||||
$this->path = $path;
|
||||
// Parse the URL into a repository directory, file path and commit ID
|
||||
list($this->repo, $repo_file, $this->commit) = $this->parse_url($path);
|
||||
|
||||
$file = $this->tree_search($this->repo, $this->commit->tree(), $repo_file);
|
||||
if ($file !== false) {
|
||||
try {
|
||||
$this->blob = $this->repo->factory('blob', $file)->content();
|
||||
return true;
|
||||
} catch (InvalidArgumentException $e) {
|
||||
// Trying to open a directory, return false below
|
||||
}
|
||||
} elseif ($mode !== 'r') {
|
||||
// All other modes allow opening for reading and writing, clearly
|
||||
// some 'write' files may not exist yet...
|
||||
return true;
|
||||
}
|
||||
|
||||
// File could not be found or is not actually a file
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Read from stream
|
||||
*/
|
||||
public function stream_read($count) {
|
||||
// Fetch the remaining set of bytes
|
||||
$bytes = substr($this->blob, $this->file_position, $count);
|
||||
|
||||
// If EOF or empty string, return false
|
||||
if ($bytes == '' || $bytes == false) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// If $count does not extend past EOF, add $count to stream offset
|
||||
if ($this->file_position + $count < strlen($this->blob)) {
|
||||
$this->file_position += $count;
|
||||
} else {
|
||||
// Otherwise return all remaining bytes
|
||||
$this->file_position = strlen($this->blob);
|
||||
}
|
||||
|
||||
return $bytes;
|
||||
}
|
||||
|
||||
/**
|
||||
* Seeks to specific location in a stream
|
||||
*/
|
||||
public function stream_seek($offset, $whence = SEEK_SET) {
|
||||
$new_offset = false;
|
||||
|
||||
switch ($whence)
|
||||
{
|
||||
case SEEK_SET:
|
||||
$new_offset = $offset;
|
||||
break;
|
||||
case SEEK_CUR:
|
||||
$new_offset = $this->file_position += $offset;
|
||||
break;
|
||||
case SEEK_END:
|
||||
$new_offset = strlen($this->blob) + $offset;
|
||||
break;
|
||||
}
|
||||
|
||||
$this->file_position = $offset;
|
||||
|
||||
return ($new_offset !== false);
|
||||
}
|
||||
|
||||
/**
|
||||
* Change stream options (NOT IMPLEMENTED)
|
||||
*/
|
||||
public function stream_set_option($option, $arg1, $arg2) {
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Retrieve information about a file resource (NOT IMPLEMENTED)
|
||||
*/
|
||||
public function stream_stat() {
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Retrieve the current position of a stream
|
||||
*/
|
||||
public function stream_tell() {
|
||||
return $this->file_position;
|
||||
}
|
||||
|
||||
/**
|
||||
* Truncate stream
|
||||
*/
|
||||
public function stream_truncate($new_size) {
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Write to stream
|
||||
* FIXME: Could use heavy refactoring
|
||||
*/
|
||||
public function stream_write($data) {
|
||||
/**
|
||||
* FIXME: This also needs to be added to Granite, in the form of `add()`,
|
||||
* `rm()` and `commit()` calls
|
||||
*/
|
||||
|
||||
// Parse the URL into a repository directory, file path and commit ID
|
||||
list($this->repo, $repo_file, $this->commit) = $this->parse_url($this->path);
|
||||
|
||||
$node = $this->tree_search($this->repo, $this->commit->tree(), $repo_file);
|
||||
|
||||
if ($node !== false) {
|
||||
// File already exists, attempting modification of existing tree
|
||||
try {
|
||||
$this->repo->factory('blob', $node);
|
||||
|
||||
// Create our new blob with the provided $data
|
||||
$blob = $this->repo->factory('blob');
|
||||
$blob->content($data);
|
||||
$blob->write();
|
||||
|
||||
// We know the tree exists, so strip the filename from the path and
|
||||
// find it...
|
||||
|
||||
if (dirname($repo_file) == '.' || dirname($repo_file) == '') {
|
||||
// Root directory
|
||||
$tree = $this->repo->head()->tree();
|
||||
} else {
|
||||
// Sub-directory
|
||||
$tree = $this->repo->factory('tree', $this->tree_search(
|
||||
$this->repo,
|
||||
$this->repo->head()->tree(),
|
||||
dirname($repo_file)
|
||||
)
|
||||
);
|
||||
}
|
||||
|
||||
// Replace the old blob with our newly modified one
|
||||
$tree_nodes = $tree->nodes();
|
||||
$tree_nodes[basename($repo_file)] = new Granite\Git\Tree\Node(
|
||||
basename($repo_file), '100644', $blob->sha()
|
||||
);
|
||||
$tree->nodes($tree_nodes);
|
||||
$tree->write();
|
||||
|
||||
// We need to recursively update each parent tree, since they are all
|
||||
// hashed and the changes will cascade back up the chain
|
||||
|
||||
// So, we're currently at the bottom-most directory
|
||||
$current_dir = dirname($repo_file);
|
||||
$previous_tree = $tree;
|
||||
|
||||
if ($current_dir !== '.') {
|
||||
do {
|
||||
// Determine the parent directory
|
||||
$previous_dir = $current_dir;
|
||||
$current_dir = dirname($current_dir);
|
||||
|
||||
$current_tree = $current_dir !== '.'
|
||||
? $this->repo->factory(
|
||||
'tree', $this->tree_search(
|
||||
$this->repo,
|
||||
$this->repo->head()->tree(),
|
||||
$current_dir
|
||||
)
|
||||
)
|
||||
: $this->repo->head()->tree();
|
||||
|
||||
$current_nodes = $current_tree->nodes();
|
||||
$current_nodes[basename($previous_dir)] = new Granite\Git\Tree\Node(
|
||||
basename($previous_dir), '040000', $previous_tree->sha()
|
||||
);
|
||||
$current_tree->nodes($current_nodes);
|
||||
$current_tree->write();
|
||||
|
||||
$previous_tree = $current_tree;
|
||||
} while ($current_dir !== '.');
|
||||
}
|
||||
|
||||
// Create a new commit to represent this write
|
||||
$commit = $this->repo->factory('commit');
|
||||
$username = OC_User::getUser();
|
||||
$user_string = $username . ' ' . time() . ' +0000';
|
||||
$commit->author($user_string);
|
||||
$commit->committer($user_string);
|
||||
$commit->message("$username modified the `$repo_file` file, " . date('d F Y H:i', time()) . '.');
|
||||
$commit->parents(array($this->repo->head()->sha()));
|
||||
$commit->tree($previous_tree);
|
||||
|
||||
// Write it to disk
|
||||
$commit->write();
|
||||
|
||||
// Update the HEAD for the 'master' branch
|
||||
$this->repo->head('master', $commit->sha());
|
||||
|
||||
// If we made it this far, write was successful - update the stream
|
||||
// position and return the number of bytes written
|
||||
$this->file_position += strlen($data);
|
||||
return strlen($data);
|
||||
|
||||
} catch (InvalidArgumentException $e) {
|
||||
// Attempting to write to a directory or other error, fail
|
||||
return 0;
|
||||
}
|
||||
} else {
|
||||
// File does not exist, needs to be created
|
||||
|
||||
// Create our new blob with the provided $data
|
||||
$blob = $this->repo->factory('blob');
|
||||
$blob->content($data);
|
||||
$blob->write();
|
||||
|
||||
if (dirname($repo_file) == '.') {
|
||||
// Trying to add a new file to the root tree, nice and easy
|
||||
$tree = $this->repo->head()->tree();
|
||||
$tree_nodes = $tree->nodes();
|
||||
$tree_nodes[basename($repo_file)] = new Granite\Git\Tree\Node(
|
||||
basename($repo_file), '100644', $blob->sha()
|
||||
);
|
||||
$tree->nodes($tree_nodes);
|
||||
$tree->write();
|
||||
} else {
|
||||
// Trying to add a new file to a subdirectory, try and find it
|
||||
$tree = $this->repo->factory('tree', $this->tree_search(
|
||||
$this->repo, $this->repo->head()->tree(), dirname($repo_file)
|
||||
)
|
||||
);
|
||||
|
||||
// Add the blob to the tree
|
||||
$nodes = $tree->nodes();
|
||||
$nodes[basename($repo_file)] = new Granite\Git\Tree\Node(
|
||||
basename($repo_file), '100644', $blob->sha()
|
||||
);
|
||||
$tree->nodes($nodes);
|
||||
$tree->write();
|
||||
|
||||
// We need to recursively update each parent tree, since they are all
|
||||
// hashed and the changes will cascade back up the chain
|
||||
|
||||
// So, we're currently at the bottom-most directory
|
||||
$current_dir = dirname($repo_file);
|
||||
$previous_tree = $tree;
|
||||
|
||||
if ($current_dir !== '.') {
|
||||
do {
|
||||
// Determine the parent directory
|
||||
$previous_dir = $current_dir;
|
||||
$current_dir = dirname($current_dir);
|
||||
|
||||
$current_tree = $current_dir !== '.'
|
||||
? $this->repo->factory(
|
||||
'tree', $this->tree_search(
|
||||
$this->repo,
|
||||
$this->repo->head()->tree(),
|
||||
$current_dir
|
||||
)
|
||||
)
|
||||
: $this->repo->head()->tree();
|
||||
|
||||
$current_nodes = $current_tree->nodes();
|
||||
$current_nodes[basename($previous_dir)] = new Granite\Git\Tree\Node(
|
||||
basename($previous_dir), '040000', $previous_tree->sha()
|
||||
);
|
||||
$current_tree->nodes($current_nodes);
|
||||
$current_tree->write();
|
||||
|
||||
$previous_tree = $current_tree;
|
||||
} while ($current_dir !== '.');
|
||||
|
||||
$tree = $previous_tree;
|
||||
}
|
||||
}
|
||||
|
||||
// Create a new commit to represent this write
|
||||
$commit = $this->repo->factory('commit');
|
||||
$username = OC_User::getUser();
|
||||
$user_string = $username . ' ' . time() . ' +0000';
|
||||
$commit->author($user_string);
|
||||
$commit->committer($user_string);
|
||||
$commit->message("$username created the `$repo_file` file, " . date('d F Y H:i', time()) . '.');
|
||||
$commit->parents(array($this->repo->head()->sha()));
|
||||
$commit->tree($tree); // Top-level tree (NOT the newly modified tree)
|
||||
|
||||
// Write it to disk
|
||||
$commit->write();
|
||||
|
||||
// Update the HEAD for the 'master' branch
|
||||
$this->repo->head('master', $commit->sha());
|
||||
|
||||
// If we made it this far, write was successful - update the stream
|
||||
// position and return the number of bytes written
|
||||
$this->file_position += strlen($data);
|
||||
return strlen($data);
|
||||
}
|
||||
|
||||
// Write failed
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Delete a file
|
||||
*/
|
||||
public function unlink($path) {
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Retrieve information about a file
|
||||
*/
|
||||
public function url_stat($path, $flags) {
|
||||
// Parse the URL into a repository directory, file path and commit ID
|
||||
list($this->repo, $repo_file, $this->commit) = $this->parse_url($path);
|
||||
|
||||
$node = $this->tree_search($this->repo, $this->commit->tree(), $repo_file);
|
||||
|
||||
if ($node == false && $this->commit->sha() == $this->repo->head()->sha()) {
|
||||
// A new file - no information available
|
||||
$size = 0;
|
||||
$mtime = -1;
|
||||
} else {
|
||||
|
||||
// Is it a directory?
|
||||
try {
|
||||
$this->repo->factory('tree', $node);
|
||||
$size = 4096; // FIXME
|
||||
} catch (InvalidArgumentException $e) {
|
||||
// Must be a file
|
||||
$size = strlen(file_get_contents($path));
|
||||
}
|
||||
|
||||
// Parse the timestamp from the commit message
|
||||
preg_match('/[0-9]{10}+/', $this->commit->committer(), $matches);
|
||||
$mtime = $matches[0];
|
||||
}
|
||||
|
||||
$stat["dev"] = "";
|
||||
$stat["ino"] = "";
|
||||
$stat["mode"] = "";
|
||||
$stat["nlink"] = "";
|
||||
$stat["uid"] = "";
|
||||
$stat["gid"] = "";
|
||||
$stat["rdev"] = "";
|
||||
$stat["size"] = $size;
|
||||
$stat["atime"] = $mtime;
|
||||
$stat["mtime"] = $mtime;
|
||||
$stat["ctime"] = $mtime;
|
||||
$stat["blksize"] = "";
|
||||
$stat["blocks"] = "";
|
||||
|
||||
return $stat;
|
||||
}
|
||||
|
||||
/**
|
||||
* Debug function for development purposes
|
||||
*/
|
||||
private function debug($message, $level = OC_Log::DEBUG)
|
||||
{
|
||||
if ($this->debug) {
|
||||
OC_Log::write('files_versioning', $message, $level);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Parses a URL of the form:
|
||||
* `versioned://path/to/git/repository/.git/path/to/file#SHA-1-commit-id`
|
||||
* FIXME: Will throw an InvalidArgumentException if $path is invaid
|
||||
*
|
||||
* @param string $path The path to parse
|
||||
*
|
||||
* @return array An array containing an instance of Granite\Git\Repository,
|
||||
* the file path, and an instance of Granite\Git\Commit
|
||||
* @throws InvalidArgumentException If the repository cannot be loaded
|
||||
*/
|
||||
private function parse_url($path)
|
||||
{
|
||||
preg_match('/\/([A-Za-z0-9\/]+\.git\/)([A-Za-z0-9\/\.\/]*)(#([A-Fa-f0-9]+))*/', $path, $matches);
|
||||
|
||||
// Load up the repo
|
||||
$repo = new \Granite\Git\Repository($matches[1]);
|
||||
// Parse the filename (stripping any trailing slashes)
|
||||
$repo_file = $matches[2];
|
||||
if (substr($repo_file, -1) == '/') {
|
||||
$repo_file = substr($repo_file, 0, -1);
|
||||
}
|
||||
|
||||
// Default to HEAD if no commit is provided
|
||||
$repo_commit = isset($matches[4])
|
||||
? $matches[4]
|
||||
: $repo->head()->sha();
|
||||
|
||||
// Load the relevant commit
|
||||
$commit = $repo->factory('commit', $repo_commit);
|
||||
|
||||
return array($repo, $repo_file, $commit);
|
||||
}
|
||||
|
||||
/**
|
||||
* Recursively searches a tree for a path, returning FALSE if is not found
|
||||
* or an SHA-1 id if it is found.
|
||||
*
|
||||
* @param string $repo The repository containing the tree object
|
||||
* @param string $tree The tree object to search
|
||||
* @param string $path The path to search for (relative to the tree)
|
||||
* @param int $depth The depth of the current search (for recursion)
|
||||
*
|
||||
* @return string|boolean The SHA-1 id of the sub-tree
|
||||
*/
|
||||
private function tree_search($repo, $tree, $path, $depth = 0)
|
||||
{
|
||||
$paths = array_values(explode(DIRECTORY_SEPARATOR, $path));
|
||||
|
||||
$current_path = $paths[$depth];
|
||||
|
||||
$nodes = $tree->nodes();
|
||||
foreach ($nodes as $node) {
|
||||
if ($node->name() == $current_path) {
|
||||
|
||||
if (count($paths)-1 == $depth) {
|
||||
// Stop, found it
|
||||
return $node->sha();
|
||||
}
|
||||
|
||||
// Recurse if necessary
|
||||
if ($node->isDirectory()) {
|
||||
$tree = $this->repo->factory('tree', $node->sha());
|
||||
return $this->tree_search($repo, $tree, $path, $depth + 1);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue