Generating Password

GeneratePassword.groovy

def xml = new groovy.xml.MarkupBuilder()
def introduction = {
    'my-information'{
        name('mike_neck')
        'twitter-id'('@mike_neck')
        job('SE')
    }
    'why-groovy'{
        'I-Tweeted'('To rewrite a copy of sample code is too bore for me. So I will write it in Groovy')
        'then'('Some Groovyist followed me on Twitter!')
    }
    'since'('2011-05-20')
    today{
        present('I will generates password.')
        conditions{
            condition('use characters defined by [a-zA-Z0-9]')
            condition('more than 5 characters')
            condition('less than 15 characters')
        }
    }
}

xml.present(introduction)

/**
 * This code is written by @fumokmm
 * {@see http://d.hatena.ne.jp/fumokmm/20090420/1240202410}
 */
IntRange.metaClass.define {
    random{
        int from = delegate.isReverse()?  to  : from
        int to   = delegate.isReverse()? from :  to
        int size = to - from + 1
        (Math.floor(Math.random() * size) + from) as int
    }
}


enum RandomChar{
    LOWER_CASE{
        char getChar(){
            ((int)'a') + (0..25).random()
        }
    }, UPPER_CASE{
        char getChar(){
            ((int)'A') + (0..25).random()
        }
    }, NUMERO_CASE{
        char getChar(){
            ((int)'0') + (0..9).random()
        }
    };
    static final List<RandomChar> items = new ArrayList(EnumSet.allOf(RandomChar.class));
    public static char get(){
        items.get(new IntRange(0, items.size() - 1).random()).getChar()
    }
}
def getPassword = {
    password = ''
    (6..14).random().times{
        password += RandomChar.get()
    }
    password
}
getPassword()