Github Packager

gistfile1.aw

<?php

	class Github_Packager {
		
		private static $api_endpoint = 'http://github.com/api/v2/json/';
		private static $temp_path = './temp/';
		
		public static function list_branches ( $addon_name, $with_commits = false ) {
			
			$url = self::$api_endpoint . 'repos/show/habari-extras/' . $addon_name . '/branches';
			
			$result = file_get_contents( $url );
			
			$result = json_decode( $result );
			
			// do we want to include commits hashes?
			if ( $with_commits ) {
				return (array)$result->branches;
			}
			else {
				return array_keys( (array)$result->branches );
			}
			
		}
		
		public static function list_tags ( $addon_name, $with_commits = false ) {
			
			$url = self::$api_endpoint . 'repos/show/habari-extras/' . $addon_name . '/tags';
			
			$result = file_get_contents( $url );
			
			$result = json_decode( $result );
			
			// do we want to include commits hashes?
			if ( $with_commits ) {
				return (array)$result->tags;
			}
			else {
				return array_keys( (array)$result->tags );
			}
			
		}
		
		public static function get_branch ( $addon_name, $branch_name ) {
			
			// first, get the list of branches so we know which commit to use
			$branches = self::list_branches( $addon_name, true );
			
			if ( !isset( $branches[ $branch_name ] ) ) {
				throw new InvalidArgumentException('The branch ' . $branch_name . ' does not exist for repo ' . $addon_name );
			}
			
			// now clone the repo and check it out to the right point
			self::clone_repo( $addon_name, $branches[ $branch_name ] );
			
			// package it!
			$filename = self::package( $addon_name, $branches[ $branch_name ] );
			
			return $filename;
			
		}
		
		public static function get_tag ( $addon_name, $tag_name ) {
		
			// first, get the list of tags so we know which commit to use
			$tags = self::list_tags( $addon_name, true );
		
			if ( !isset( $tags[ $tag_name ] ) ) {
				throw new InvalidArgumentException('The tag ' . $tag_name . ' does not exist for repo ' . $addon_name );
			}
		
			// now clone the repo and check it out to the right point
			self::clone_repo( $addon_name, $tags[ $tag_name ] );
		
			// package it!
			$filename = self::package( $addon_name, $tags[ $tag_name ] );
		
			return $filename;
		
		}
		
		private static function clone_repo ( $addon_name, $commit ) {
			
			// we use an abbreviated commit hash for unique naming
			$hash = substr( $commit, 0, 8 );
			
			// build the url to the repo
			$url = 'https://github.com/habari-extras/' . $addon_name . '.git';
			
			$dest_directory = self::$temp_path . $addon_name . '-' . $hash;
			
			if ( file_exists( $dest_directory ) ) {
				rmdir( $dest_directory );
			}
			
			// clone the repo
			shell_exec( 'git clone ' . $url . ' ' . $dest_directory );
			
			$orig_dir = getcwd();
			
			// move into that directory
			chdir( $dest_directory );
			
			// check out our specific commit in a detached state
			shell_exec( 'git checkout --detach --quiet ' . $commit );
			
			// pull in submodules
			shell_exec( 'git submodule update --init' );
			
			// move back to the original location so self::package() can chdir properly
			chdir( $orig_dir );
			
		}
		
		private static function package ( $addon_name, $commit ) {
			
			$hash = substr( $commit, 0, 8 );
			
			$orig_dir = getcwd();
			
			// move into the temp directory so our zip file ends up with a sane structure
			chdir( self::$temp_path );
			
			$repo_name = $addon_name . '-' . $hash;
			
			$dest_file = $repo_name . '.zip';
			
			// 		-9 = highest compression
			//		-r = recurse into directories
			shell_exec( 'zip -9 -r ' . $dest_file . ' ' . $repo_name );
			
			// move back to the original directory so the path below is actually right
			chdir( $orig_dir );
			
			// return the full path to the zip file
			return realpath( self::$temp_path . $dest_file );
			
		}
		
	}
	
	$result = Github_Packager::get_tag('blogroll', '0.6-0.6');
	
	var_dump($result);

?>