82 lines
2.2 KiB
PHP
82 lines
2.2 KiB
PHP
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<?php
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/**
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* Loose - provides a 'loose object' 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\Object;
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use \UnexpectedValueException as UnexpectedValueException;
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/**
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* Loose represents a loose object in the Git repository
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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 Loose extends Raw
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{
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/**
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* Reads an object from a loose object file based on the SHA-1 id
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*
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* @param string $path The path to the repository root
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* @param string $sha The SHA-1 id of the requested object
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*
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* @throws UnexpectedValueException If the type is not 'commit', 'tree',
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* 'tag' or 'blob'
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*/
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public function __construct($path, $sha)
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{
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$this->sha = $sha;
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$loose_path = $path
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. 'objects/'
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. substr($sha, 0, 2)
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. '/'
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. substr($sha, 2);
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if (!file_exists($loose_path)) {
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throw new InvalidArgumentException("Cannot open loose object file for $sha");
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}
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$raw = gzuncompress(file_get_contents($loose_path));
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$data = explode("\0", $raw, 2);
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$header = $data[0];
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$this->content = $data[1];
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list($this->type, $this->size) = explode(' ', $header);
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switch ($this->type) {
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case 'commit':
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$this->type = Raw::OBJ_COMMIT;
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break;
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case 'tree':
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$this->type = Raw::OBJ_TREE;
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break;
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case 'blob':
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$this->type = Raw::OBJ_BLOB;
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break;
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case 'tag':
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$this->type = Raw::OBJ_TAG;
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break;
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default:
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throw new UnexpectedValueException(
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"Unexpected type '{$this->type}'"
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);
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break;
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}
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}
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}
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