usr/src/lib/libc/port/stdio/vwscanf.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include "lint.h"
  30 #include "file64.h"
  31 #include <mtlib.h>
  32 #include <stdio.h>
  33 #include <stdarg.h>
  34 #include <string.h>
  35 #include <thread.h>
  36 #include <synch.h>
  37 #include <wchar.h>
  38 #include <errno.h>
  39 #include <stdlib.h>
  40 #include <alloca.h>
  41 #include "mse.h"
  42 #include "stdiom.h"
  43 #include "libc.h"
  44
  45 int
  46 #ifdef _C89_INTMAX32    /* _C89_INTMAX32 version in 32-bit libc only */
  47 _vwscanf_c89(const wchar_t *fmt, va_list ap)
  48 #else
  49 vwscanf(const wchar_t *fmt, va_list ap)
  50 #endif
  51 {
  52         rmutex_t        *lk;
  53         int     ret;
  54
  55         FLOCKFILE(lk, stdin);
  56
  57         if (GET_NO_MODE(stdin))
  58                 _setorientation(stdin, _WC_MODE);
  59
  60 #ifdef _C89_INTMAX32
  61         ret = __wdoscan_u(stdin, fmt, ap, _F_INTMAX32);
  62 #else
  63         ret = __wdoscan_u(stdin, fmt, ap, 0);
  64 #endif
  65         FUNLOCKFILE(lk);
  66         return (ret);
  67 }
  68
  69 int
  70 #ifdef _C89_INTMAX32    /* _C89_INTMAX32 version in 32-bit libc only */
  71 _vfwscanf_c89(FILE *iop, const wchar_t *fmt, va_list ap)
  72 #else
  73 vfwscanf(FILE *iop, const wchar_t *fmt, va_list ap)
  74 #endif
  75 {
  76         rmutex_t        *lk;
  77         int     ret;
  78
  79         FLOCKFILE(lk, iop);
  80
  81         if (GET_NO_MODE(iop))
  82                 _setorientation(iop, _WC_MODE);
  83
  84
  85 #ifdef _C89_INTMAX32
  86         ret = __wdoscan_u(iop, fmt, ap, _F_INTMAX32);
  87 #else
  88         ret = __wdoscan_u(iop, fmt, ap, 0);
  89 #endif
  90         FUNLOCKFILE(lk);
  91         return (ret);
  92 }
  93
  94 int
  95 #ifdef _C89_INTMAX32    /* _C89_INTMAX32 version in 32-bit libc only */
  96 _vswscanf_c89(const wchar_t *wstr, const wchar_t *fmt, va_list ap)
  97 #else
  98 vswscanf(const wchar_t *wstr, const wchar_t *fmt, va_list ap)
  99 #endif
 100 {
 101         FILE    strbuf;
 102         size_t  wlen, clen;
 103         char    *tmp_buf;
 104         int     ret;
 105
 106         /*
 107          * The dummy FILE * created for swscanf has the _IOWRT
 108          * flag set to distinguish it from wscanf and fwscanf
 109          * invocations.
 110          */
 111
 112         clen = wcstombs(NULL, wstr, 0);
 113         if (clen == (size_t)-1) {
 114                 errno = EILSEQ;
 115                 return (EOF);
 116         }
 117         tmp_buf = alloca(sizeof (char) * (clen + 1));
 118         if (tmp_buf == NULL)
 119                 return (EOF);
 120         wlen = wcstombs(tmp_buf, wstr, clen + 1);
 121         if (wlen == (size_t)-1) {
 122                 errno = EILSEQ;
 123                 return (EOF);
 124         }
 125
 126         strbuf._flag = _IOREAD | _IOWRT;
 127         strbuf._ptr = strbuf._base = (unsigned char *)tmp_buf;
 128         strbuf._cnt = strlen(tmp_buf);
 129         SET_FILE(&strbuf, _NFILE);
 130
 131         /* Probably the following is not required. */
 132         /* _setorientation(&strbuf, _WC_MODE); */
 133
 134 #ifdef _C89_INTMAX32
 135         ret = __wdoscan_u(&strbuf, fmt, ap, _F_INTMAX32);
 136 #else
 137         ret = __wdoscan_u(&strbuf, fmt, ap, 0);
 138 #endif
 139         return (ret);
 140 }