key.go

// Copyright 2011 Google Inc.
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
//      http://www.apache.org/licenses/LICENSE-2.0
// 
//      Unless required by applicable law or agreed to in writing, software
//      distributed under the License is distributed on an "AS IS" BASIS,
//      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//      See the License for the specific language governing permissions and
//      limitations under the License.

package main

var keyChar = []byte("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")

func genKey(n int) string {
	if n == 0 {
		return string(keyChar[0])
	}
	l := len(keyChar)
	s := make([]byte, 20) // FIXME: will overflow. eventually.
	i := len(s)
	for n > 0 && i >= 0 {
		i--
		j := n % l
		n = (n - j) / l
		s[i] = keyChar[j]
	}
	return string(s[i:])
}