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windows: optimize UTF16{,Ptr}FromString

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Use strings.IndexByte in UTF16FromString instead of an open-coded loop.

Change-Id: Iac4374d9a58e40659147d35c9ab21bb89f5da629
Reviewed-on: https://go-review.googlesource.com/c/sys/+/393594
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Tobias Klauser
2022-03-17 10:38:59 +01:00
committed by Tobias Klauser
parent 51cd9980da
commit 2edf467146
1 changed files with 3 additions and 4 deletions
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7
windows/syscall_windows.go
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@@ -10,6 +10,7 @@ import (
errorspkg "errors"
"fmt"
"runtime"
"strings"
"sync"
"syscall"
"time"
@@ -86,10 +87,8 @@ func StringToUTF16(s string) []uint16 {
// s, with a terminating NUL added. If s contains a NUL byte at any
// location, it returns (nil, syscall.EINVAL).
func UTF16FromString(s string) ([]uint16, error) {
for i := 0; i < len(s); i++ {
if s[i] == 0 {
return nil, syscall.EINVAL
}
if strings.IndexByte(s, 0) != -1 {
return nil, syscall.EINVAL
}
return utf16.Encode([]rune(s + "\x00")), nil
}