1 // Copyright 2009 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package strconv 6 7 // ParseBool returns the boolean value represented by the string. 8 // It accepts 1, t, T, TRUE, true, True, 0, f, F, FALSE, false, False. 9 // Any other value returns an error. 10 func ParseBool(str string) (value bool, err error) { 11 switch str { 12 case "1", "t", "T", "true", "TRUE", "True": 13 return true, nil 14 case "0", "f", "F", "false", "FALSE", "False": 15 return false, nil 16 } 17 return false, syntaxError("ParseBool", str) 18 } 19 20 // FormatBool returns "true" or "false" according to the value of b 21 func FormatBool(b bool) string { 22 if b { 23 return "true" 24 } 25 return "false" 26 } 27 28 // AppendBool appends "true" or "false", according to the value of b, 29 // to dst and returns the extended buffer. 30 func AppendBool(dst []byte, b bool) []byte { 31 if b { 32 return append(dst, "true"...) 33 } 34 return append(dst, "false"...) 35 } 36
