code: function(prefix, phash, glue) {
  		var i = 0, ext = '', p, name;
  		
  		prefix = this.i18n(false, prefix);
  		phash = phash || this.cwd().hash;
  		glue = (typeof glue === 'undefined')? ' ' : glue;
  
  		if (p = prefix.match(/^(.+)(\.[^.]+)$/)) {
  			ext    = p[2];
  			prefix = p[1];
  		}
  		
  		name   = prefix+ext;
  		
  		if (!this.fileByName(name, phash)) {
  			return name;
  		}
  		while (i < 10000) {
  			name = prefix + glue + (++i) + ext;
  			if (!this.fileByName(name, phash)) {
  				return name;
  			}
  		}
  		return prefix + Math.random() + ext;
  	}
docs: Create unique file name in required dir
  
  @param  String  file name
  @param  String  parent dir hash
  @param  String  glue
  @return String