locale/FreeBSD/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 <limits.h>
  44 #include <rune.h>
  45 #include <stddef.h>
  46 #include <stdio.h>
  47
  48 __warn_references(fgetrune, "warning: fgetrune() is deprecated. See fgetrune(3).");
  49 long
  50 fgetrune(fp)
  51         FILE *fp;
  52 {
  53         rune_t  r;
  54         int c, len;
  55         char buf[MB_LEN_MAX];
  56         char const *result;
  57
  58         len = 0;
  59         do {
  60                 if ((c = getc(fp)) == EOF) {
  61                         if (len)
  62                                 break;
  63                         return (EOF);
  64                 }
  65                 buf[len++] = c;
  66
  67                 if ((r = sgetrune(buf, len, &result)) != _INVALID_RUNE)
  68                         return (r);
  69         } while (result == buf && len < MB_LEN_MAX);
  70
  71         while (--len > 0)
  72                 ungetc(buf[len], fp);
  73         return (_INVALID_RUNE);
  74 }
  75
  76 __warn_references(fungetrune, "warning: fungetrune() is deprecated. See fungetrune(3).");
  77 int
  78 fungetrune(r, fp)
  79         rune_t r;
  80         FILE* fp;
  81 {
  82         int len;
  83         char buf[MB_LEN_MAX];
  84
  85         len = sputrune(r, buf, MB_LEN_MAX, 0);
  86         while (len-- > 0)
  87                 if (ungetc(buf[len], fp) == EOF)
  88                         return (EOF);
  89         return (0);
  90 }
  91
  92 __warn_references(fputrune, "warning: fputrune() is deprecated. See fputrune(3).");
  93 int
  94 fputrune(r, fp)
  95         rune_t r;
  96         FILE *fp;
  97 {
  98         int i, len;
  99         char buf[MB_LEN_MAX];
 100
 101         len = sputrune(r, buf, MB_LEN_MAX, 0);
 102
 103         for (i = 0; i < len; ++i)
 104                 if (putc(buf[i], fp) == EOF)
 105                         return (EOF);
 106
 107         return (0);
 108 }