mirror of git://gcc.gnu.org/git/gcc.git
33 lines
765 B
Go
33 lines
765 B
Go
// errstr.go -- Error strings.
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package syscall
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//sysnb strerror_r(errnum int, buf []byte) (err Errno)
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//strerror_r(errnum _C_int, buf *byte, buflen Size_t) _C_int
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func Errstr(errnum int) string {
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for len := 128; ; len *= 2 {
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b := make([]byte, len)
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errno := strerror_r(errnum, b)
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if errno == 0 {
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i := 0
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for b[i] != 0 {
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i++
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}
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// Lowercase first letter: Bad -> bad, but
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// STREAM -> STREAM.
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if i > 1 && 'A' <= b[0] && b[0] <= 'Z' && 'a' <= b[1] && b[1] <= 'z' {
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b[0] += 'a' - 'A'
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}
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return string(b[:i])
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}
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if errno != ERANGE {
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return "errstr failure"
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}
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}
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}
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