{
	"name" : "ls",

	"info" : {
		"syntax" : "ls [path]",
		"brief" : "List directory contents",
	},

	"action" : function ( arg )
	{
		var dirs = new Array();
		var out = '';
		var exists = false;

		if ( !arg || arg.length == 0 )
		{
			var re = null;

			if ( shell.path == '/' )
			{
				re = new RegExp ( '^' + shell.path + '[^/]+$' );
			} else {
				re = new RegExp ( '^' + shell.path + '/?[^/]+$' );
			}
		} else if ( arg && arg.length > 0 ) {
			arg = shell.expandPath ( arg );
			var re = new RegExp ( '^' + arg + '/[^/]+$' );
		}

		for ( var i=0; i < shell.json.directories.length; i++ )
		{
			var dir = shell.json.directories[i];

			if ( dir.path.match ( re ))
			{
				exists = true;
				dir.path.match ( /\/([^\/]+)$/ );

				dirs.push ({
					"path" : RegExp.$1,
					"type" : dir.type,
					"href" : dir.href,
				});
			}
		}

		if ( dirs.length > 0 )
		{
			var ordered = false;

			// Directories go first
			while ( !ordered )
			{
				ordered = true;

				for ( var i=0; i < dirs.length-1; i++ )
				{
					for ( var j=i+1; j < dirs.length; j++ )
					{
						if ( dirs[i].type == 'file' && dirs[j].type == 'directory' )
						{
							var tmp = dirs[i];
							dirs[i] = dirs[j];
							dirs[j] = tmp;
							ordered = false;
						}
					}
				}
			}

			ordered = false;

			// Sort the names
			while ( !ordered )
			{
				ordered = true;

				for ( var i=0; i < dirs.length-1; i++ )
				{
					for ( var j=i+1; j < dirs.length; j++ )
					{
						if ( dirs[i].type == dirs[j].type && dirs[i].path > dirs[j].path )
						{
							var tmp = dirs[i];
							dirs[i] = dirs[j];
							dirs[j] = tmp;
							ordered = false;
						}
					}
				}
			}

			for ( var i in dirs )
			{
				if ( dirs[i] )
				{
					if ( dirs[i].path.length > 0 )
					{
						if ( dirs[i].type == 'directory' )
						{
							out += '<span class="directory">' + dirs[i].path + '</span>/<br/>';
						} else {
							if ( dirs[i].href && dirs[i].href.length > 0 )
							{
								out += '<a href="' + dirs[i].href + '" class="file" target="_new">' + dirs[i].path + '</a>*<br/>';
							} else {
								out += dirs[i].path + '<br/>';
							}
						}
					}
				}
			}
		}

		if ( !exists )
		{
			for ( var i=0; i < shell.json.directories.length; i++ )
			{
				var dir = shell.json.directories[i];
				arg = arg.replace ( /\/+$/, '' );

				if ( dir.path.match ( arg ))
				{
					return '';
				}
			}

			var re = null;

			if ( arg.match ( /^\// ))
			{
				re = new RegExp ( '^' + arg );
			} else {
				re = new RegExp ( '^' + shell.path +
						(( shell.path == '/' ) ? '' : '/' ) + arg );
			}

			for ( var i=0; i < shell.json.directories.length; i++ )
			{
				var dir = shell.json.directories[i];

				if ( dir.path.match ( re ))
				{
					exists = true;
					break;
				}
			}

			if ( !exists )
			{
				out = this.name + ": cannot access " + arg +
					": No such file or directory<br/>";
			} else {
				out = '';
			}
		}

		return out;
	}
}