// vi:ts=4:sts=4:sw=4:noet:tw=72

package util

import (
	"bytes"
	"strconv"
	"strings"
)

func ToInt(v interface{}) int {
	switch v.(type) {
	case int:
		return v.(int)
	case float64:
		return int(v.(float64))
	case string:
		ret, _ := strconv.Atoi(v.(string))
		return ret
	default:
		return 0
	}
}

func NumberToString(n int, sep rune) string {
	start := 0
	var buf bytes.Buffer

	s := strconv.Itoa(n)
	if n < 0 {
		start = 1
		buf.WriteByte('-')
	}
	l := len(s)
	ci := 3 - ((l - start) % 3)
	if ci == 3 {
		ci = 0
	}
	for i := start; i < l; i++ {
		if ci == 3 {
			buf.WriteRune(sep)
			ci = 0
		}
		ci++
		buf.WriteByte(s[i])
	}
	return buf.String()
}

func ReplaceUmlauts(s string) string {
	ret := strings.Replace(s, "Ä", "Ae", -1)
	ret = strings.Replace(ret, "Ö", "Oe", -1)
	ret = strings.Replace(ret, "Ü", "Ue", -1)
	ret = strings.Replace(ret, "ä", "ae", -1)
	ret = strings.Replace(ret, "ö", "oe", -1)
	ret = strings.Replace(ret, "ü", "ue", -1)
	ret = strings.Replace(ret, "ß", "ss", -1)
	return ret
}