Added support for remote0

internal/hwinfo/util/util.go

@@ -0,0 +1,61 @@
+package util
+
+import "C"
+
+import (
+	"errors"
+	"fmt"
+	"log"
+	"strings"
+	"unsafe"
+
+	"golang.org/x/text/encoding/charmap"
+)
+
+// ErrFileNotFound Windows error
+var ErrFileNotFound = errors.New("file not found")
+
+// ErrInvalidHandle Windows error
+var ErrInvalidHandle = errors.New("invalid handle")
+
+// UnknownError unhandled Windows error
+type UnknownError struct {
+	Code uint64
+}
+
+func (e UnknownError) Error() string {
+	return fmt.Sprintf("unknown error code: %d", e.Code)
+}
+
+// HandleLastError converts C.GetLastError() to golang error
+func HandleLastError(code uint64) error {
+	switch code {
+	case 2: // ERROR_FILE_NOT_FOUND
+		return ErrFileNotFound
+	case 6: // ERROR_INVALID_HANDLE
+		return ErrInvalidHandle
+	default:
+		return UnknownError{Code: code}
+	}
+}
+
+func goStringFromPtr(ptr unsafe.Pointer, len int) string {
+	s := C.GoStringN((*C.char)(ptr), C.int(len))
+	return s[:strings.IndexByte(s, 0)]
+}
+
+// DecodeCharPtr decodes ISO8859_1 string to UTF-8
+func DecodeCharPtr(ptr unsafe.Pointer, len int) string {
+	s := goStringFromPtr(ptr, len)
+	ds, err := decodeISO8859_1(s)
+	if err != nil {
+		log.Fatalf("TODO: failed to decode: %v", err)
+	}
+	return ds
+}
+
+var isodecoder = charmap.ISO8859_1.NewDecoder()
+
+func decodeISO8859_1(in string) (string, error) {
+	return isodecoder.String(in)
+}