libgo/runtime/go-string-to-byte-array.c

   1 /* go-string-to-byte-array.c -- convert a string to an array of bytes in Go.
   2
   3    Copyright 2010 The Go Authors. All rights reserved.
   4    Use of this source code is governed by a BSD-style
   5    license that can be found in the LICENSE file.  */
   6
   7 #include "runtime.h"
   8 #include "array.h"
   9 #include "arch.h"
  10 #include "malloc.h"
  11
  12 struct __go_open_array
  13 __go_string_to_byte_array (String str)
  14 {
  15   uintptr cap;
  16   unsigned char *data;
  17   struct __go_open_array ret;
  18
  19   cap = runtime_roundupsize (str.len);
  20   data = (unsigned char *) runtime_mallocgc (cap, 0, FlagNoScan | FlagNoZero);
  21   __builtin_memcpy (data, str.str, str.len);
  22   if (cap != (uintptr) str.len)
  23     __builtin_memset (data + str.len, 0, cap - (uintptr) str.len);
  24   ret.__values = (void *) data;
  25   ret.__count = str.len;
  26   ret.__capacity = (intgo) cap;
  27   return ret;
  28 }