EmbeddedPkg: Extend NvVarStoreFormattedLib LIBRARY_CLASS

[mirror_edk2.git] / StdLib / LibC / Stdio / vswscanf.c

/*-\r
 * Copyright (c) 1990, 1993\r
 *  The Regents of the University of California.  All rights reserved.\r
 *\r
 * This code is derived from software contributed to Berkeley by\r
 * Donn Seeley at UUNET Technologies, Inc.\r
 *\r
 * Redistribution and use in source and binary forms, with or without\r
 * modification, are permitted provided that the following conditions\r
 * are met:\r
 * 1. Redistributions of source code must retain the above copyright\r
 *    notice, this list of conditions and the following disclaimer.\r
 * 2. Redistributions in binary form must reproduce the above copyright\r
 *    notice, this list of conditions and the following disclaimer in the\r
 *    documentation and/or other materials provided with the distribution.\r
 * 3. All advertising materials mentioning features or use of this software\r
 *    must display the following acknowledgement:\r
 *  This product includes software developed by the University of\r
 *  California, Berkeley and its contributors.\r
 * 4. Neither the name of the University nor the names of its contributors\r
 *    may be used to endorse or promote products derived from this software\r
 *    without specific prior written permission.\r
 *\r
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND\r
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE\r
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
 * SUCH DAMAGE.\r
\r
  FreeBSD: src/lib/libc/stdio/vswscanf.c,v 1.3 2004/04/07 09:55:05 tjr Exp\r
  NetBSD: vswscanf.c,v 1.3 2005/12/02 13:51:22 yamt Exp\r
 */\r
#include  <LibConfig.h>\r
#include  <sys/EfiCdefs.h>\r
\r
#include  <limits.h>\r
#include  <stdarg.h>\r
#include  <stdio.h>\r
#include  <stdlib.h>\r
#include  <string.h>\r
#include  <wchar.h>\r
#include  <sys/types.h>\r
#include  "reentrant.h"\r
#include  "local.h"\r
\r
static int  eofread(void *, char *, int);\r
\r
static int\r
/*ARGSUSED*/\r
eofread(void *cookie, char *buf, int len)\r
{\r
  return (0);\r
}\r
\r
int\r
vswscanf(\r
  const wchar_t * __restrict str,\r
  const wchar_t * __restrict fmt,\r
  va_list ap\r
  )\r
{\r
  static const mbstate_t initial = { 0 };\r
  mbstate_t mbs;\r
  FILE f;\r
  char *mbstr;\r
  size_t mlen;\r
  int r;\r
  const wchar_t *rstr = str;\r
  struct __sfileext fext = { { 0 } };\r
\r
  /*\r
   * XXX Convert the wide character string to multibyte, which\r
   * __vfwscanf() will convert back to wide characters.\r
   */\r
  if ((mbstr = malloc(wcslen(str) * MB_CUR_MAX + 1)) == NULL)\r
    return (EOF);\r
  mbs = initial;\r
  if ((mlen = wcsrtombs(mbstr, &rstr, SIZE_T_MAX, &mbs)) == (size_t)-1) {\r
    free(mbstr);\r
    return (EOF);\r
  }\r
  _FILEEXT_SETUP(&f, &fext);\r
  f._file = -1;\r
  f._flags = __SRD;\r
  f._bf._base = f._p = (unsigned char *)mbstr;\r
  f._bf._size = f._r = (int)mlen;\r
  f._read = eofread;\r
  _UB(&f)._base = NULL;\r
  f._lb._base = NULL;\r
  r = __vfwscanf_unlocked(&f, fmt, ap);\r
  free(mbstr);\r
\r
  return (r);\r
}\r