[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/golang.org/x/sys/windows/syscall.go b/vendor/golang.org/x/sys/windows/syscall.go
index af828a9..6122f55 100644
--- a/vendor/golang.org/x/sys/windows/syscall.go
+++ b/vendor/golang.org/x/sys/windows/syscall.go
@@ -25,17 +25,20 @@
package windows // import "golang.org/x/sys/windows"
import (
+ "bytes"
+ "strings"
"syscall"
+ "unsafe"
+
+ "golang.org/x/sys/internal/unsafeheader"
)
// ByteSliceFromString returns a NUL-terminated slice of bytes
// containing the text of s. If s contains a NUL byte at any
// location, it returns (nil, syscall.EINVAL).
func ByteSliceFromString(s string) ([]byte, 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
}
a := make([]byte, len(s)+1)
copy(a, s)
@@ -53,6 +56,41 @@
return &a[0], nil
}
+// ByteSliceToString returns a string form of the text represented by the slice s, with a terminating NUL and any
+// bytes after the NUL removed.
+func ByteSliceToString(s []byte) string {
+ if i := bytes.IndexByte(s, 0); i != -1 {
+ s = s[:i]
+ }
+ return string(s)
+}
+
+// BytePtrToString takes a pointer to a sequence of text and returns the corresponding string.
+// If the pointer is nil, it returns the empty string. It assumes that the text sequence is terminated
+// at a zero byte; if the zero byte is not present, the program may crash.
+func BytePtrToString(p *byte) string {
+ if p == nil {
+ return ""
+ }
+ if *p == 0 {
+ return ""
+ }
+
+ // Find NUL terminator.
+ n := 0
+ for ptr := unsafe.Pointer(p); *(*byte)(ptr) != 0; n++ {
+ ptr = unsafe.Pointer(uintptr(ptr) + 1)
+ }
+
+ var s []byte
+ h := (*unsafeheader.Slice)(unsafe.Pointer(&s))
+ h.Data = unsafe.Pointer(p)
+ h.Len = n
+ h.Cap = n
+
+ return string(s)
+}
+
// Single-word zero for use when we need a valid pointer to 0 bytes.
// See mksyscall.pl.
var _zero uintptr