Parsing FTP LIST Command Responses

gistfile1.js

var response = '', // FTP LIST response as a string
    lines    = response.trim().split("\r\n"),
    parsed   = [],
    regexp   = new RegExp(
        '^([\\-dbclps])' +                // Directory flag [1]
        '([\\-rwxs]{9})\\s+' +            // Permissions [2]
        '(\\d+)\\s+' +                    // Number of items [3]
        '(\\w+)\\s+' +                    // File owner [4]
        '(\\w+)\\s+' +                    // File group [5]
        '(\\d+)\\s+' +                    // File size in bytes [6]
        '(\\w{3}\\s+\\d{1,2}\\s+' +       // 3-char month and 1/2-char day of the month [7]
        '(?:\\d{1,2}:\\d{1,2}|\\d{4}))' + // Time or year (need to check conditions) [+= 7]
        '\\s+(.+)$'                       // File/directory name [8]
    );

// Add each parsed line to the parsed array
for(var line in lines){
    var parsedLine = regexp.exec(lines[line]);
    if(parsedLine === null) {
        continue; // Skip if no match
    } else {
        parsed[line] = {
            type:  parsedLine[1],
            perms: parsedLine[2],
            items: parsedLine[3],
            owner: parsedLine[4],
            group: parsedLine[5],
            size:  parsedLine[6],
            date:  parsedLine[7],
            file:  parsedLine[8],
        };
    }
}

alert(JSON.stringify(parsed));