locale/frune.c

   1 /*-
   2  * Copyright (c) 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Paul Borman at Krystal Technologies.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  */
  36
  37 #if defined(LIBC_SCCS) && !defined(lint)
  38 static char sccsid[] = "@(#)frune.c     8.1 (Berkeley) 6/4/93";
  39 #endif /* LIBC_SCCS and not lint */
  40 #include <sys/cdefs.h>
  41 __FBSDID("$FreeBSD: src/lib/libc/locale/frune.c,v 1.3 2002/09/18 06:19:12 tjr Exp $");
  42
  43 #include "xlocale_private.h"
  44
  45 #include <limits.h>
  46 #include <rune.h>
  47 #include <stddef.h>
  48 #include <stdio.h>
  49 #include "runedepreciated.h"
  50
  51 long
  52 fgetrune(fp)
  53         FILE *fp;
  54 {
  55         rune_t  r;
  56         int c, len;
  57         char buf[MB_LEN_MAX];
  58         char const *result;
  59         __darwin_rune_t invalid_rune = __current_locale()->__lc_ctype->_CurrentRuneLocale.__invalid_rune;
  60         static int warn_depreciated = 1;
  61
  62         if (warn_depreciated) {
  63                 warn_depreciated = 0;
  64                 fprintf(stderr, __rune_depreciated_msg, "fgetrune");
  65         }
  66
  67         len = 0;
  68         do {
  69                 if ((c = getc(fp)) == EOF) {
  70                         if (len)
  71                                 break;
  72                         return (EOF);
  73                 }
  74                 buf[len++] = c;
  75
  76                 if ((r = __sgetrune(buf, len, &result)) != invalid_rune)
  77                         return (r);
  78         } while (result == buf && len < MB_LEN_MAX);
  79
  80         while (--len > 0)
  81                 ungetc(buf[len], fp);
  82         return (invalid_rune);
  83 }
  84
  85 int
  86 fungetrune(r, fp)
  87         rune_t r;
  88         FILE* fp;
  89 {
  90         int len;
  91         char buf[MB_LEN_MAX];
  92         static int warn_depreciated = 1;
  93
  94         if (warn_depreciated) {
  95                 warn_depreciated = 0;
  96                 fprintf(stderr, __rune_depreciated_msg, "fungetrune");
  97         }
  98
  99         len = __sputrune(r, buf, MB_LEN_MAX, 0);
 100         while (len-- > 0)
 101                 if (ungetc(buf[len], fp) == EOF)
 102                         return (EOF);
 103         return (0);
 104 }
 105
 106 int
 107 fputrune(r, fp)
 108         rune_t r;
 109         FILE *fp;
 110 {
 111         int i, len;
 112         char buf[MB_LEN_MAX];
 113         static int warn_depreciated = 1;
 114
 115         if (warn_depreciated) {
 116                 warn_depreciated = 0;
 117                 fprintf(stderr, __rune_depreciated_msg, "fputrune");
 118         }
 119
 120         len = __sputrune(r, buf, MB_LEN_MAX, 0);
 121
 122         for (i = 0; i < len; ++i)
 123                 if (putc(buf[i], fp) == EOF)
 124                         return (EOF);
 125
 126         return (0);
 127 }