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syscall: Force first letter of error message to lower case.

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From-SVN: r193449
This commit is contained in:
Ian Lance Taylor 2012-11-12 19:34:52 +00:00
parent 36a41ef191
commit 86f2731e63
3 changed files with 24 additions and 6 deletions
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15
libgo/go/syscall/errstr.go
View File

@ -6,22 +6,27 @@
package syscall
//sysnb strerror_r(errnum int, buf []byte) (err error)
//sysnb strerror_r(errnum int, buf []byte) (err Errno)
//strerror_r(errnum _C_int, buf *byte, buflen Size_t) _C_int
func Errstr(errnum int) string {
for len := 128; ; len *= 2 {
b := make([]byte, len)
err := strerror_r(errnum, b)
if err == nil {
errno := strerror_r(errnum, b)
if errno == 0 {
i := 0
for b[i] != 0 {
i++
}
// Lowercase first letter: Bad -> bad, but
// STREAM -> STREAM.
if i > 1 && 'A' <= b[0] && b[0] <= 'Z' && 'a' <= b[1] && b[1] <= 'z' {
b[0] += 'a' - 'A'
}
return string(b[:i])
}
if err != ERANGE {
return "Errstr failure"
if errno != ERANGE {
return "errstr failure"
}
}
}

5
libgo/go/syscall/errstr_linux.go
View File

@ -19,5 +19,10 @@ func Errstr(errnum int) string {
for b[i] != 0 {
i++
}
// Lowercase first letter: Bad -> bad, but STREAM -> STREAM.
if i > 1 && 'A' <= b[0] && b[0] <= 'Z' && 'a' <= b[1] && b[1] <= 'z' {
c := b[0] + 'a' - 'A'
return string(c) + string(b[1:i])
}
return string(b[:i])
}

10
libgo/go/syscall/errstr_nor.go
View File

@ -25,7 +25,15 @@ func Errstr(errno int) string {
for b[i] != 0 {
i++
}
s := string(b[: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()