File: errstr_nor.go

package info (click to toggle)
gcc-avr 1%3A5.4.0%2BAtmel3.6.2-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 589,872 kB
  • sloc: ansic: 2,775,581; ada: 756,757; cpp: 723,977; f90: 117,673; asm: 66,898; makefile: 62,755; xml: 44,466; sh: 29,549; exp: 23,315; objc: 15,216; fortran: 10,901; pascal: 4,185; python: 4,093; perl: 2,969; awk: 2,811; ml: 2,385; cs: 879; yacc: 316; lex: 198; haskell: 112; lisp: 8
file content (41 lines) | stat: -rw-r--r-- 794 bytes parent folder | download | duplicates (5) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
 
// errstr.go -- Error strings when there is no strerror_r.

// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package syscall

import (
	"sync"
	"unsafe"
)

//sysnb	strerror(errnum int) (buf *byte)
//strerror(errnum _C_int) *byte

var errstr_lock sync.Mutex

func Errstr(errno int) string {
	errstr_lock.Lock()

	bp := strerror(errno)
	b := (*[1000]byte)(unsafe.Pointer(bp))
	i := 0
	for b[i] != 0 {
		i++
	}

	// Lowercase first letter: Bad -> bad, but STREAM -> STREAM.
	var s string
	if i > 1 && 'A' <= b[0] && b[0] <= 'Z' && 'a' <= b[1] && b[1] <= 'z' {
		c := b[0] + 'a' - 'A'
		s = string(c) + string(b[1:i])
	} else {
		s = string(b[:i])
	}

	errstr_lock.Unlock()

	return s
}