diff options
Diffstat (limited to 'libgo/go/internal/syscall/windows/syscall_windows.go')
| -rw-r--r-- | libgo/go/internal/syscall/windows/syscall_windows.go | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/libgo/go/internal/syscall/windows/syscall_windows.go b/libgo/go/internal/syscall/windows/syscall_windows.go index 099e91ed68c..dc641116bae 100644 --- a/libgo/go/internal/syscall/windows/syscall_windows.go +++ b/libgo/go/internal/syscall/windows/syscall_windows.go @@ -7,9 +7,29 @@ package windows import ( "sync" "syscall" + "unicode/utf16" "unsafe" ) +// UTF16PtrToString is like UTF16ToString, but takes *uint16 +// as a parameter instead of []uint16. +// max is how many times p can be advanced looking for the null terminator. +// If max is hit, the string is truncated at that point. +func UTF16PtrToString(p *uint16, max int) string { + if p == nil { + return "" + } + // Find NUL terminator. + end := unsafe.Pointer(p) + n := 0 + for *(*uint16)(end) != 0 && n < max { + end = unsafe.Pointer(uintptr(end) + unsafe.Sizeof(*p)) + n++ + } + s := (*[(1 << 30) - 1]uint16)(unsafe.Pointer(p))[:n:n] + return string(utf16.Decode(s)) +} + const ( ERROR_SHARING_VIOLATION syscall.Errno = 32 ERROR_LOCK_VIOLATION syscall.Errno = 33 |