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- /*-
- * Copyright (c) 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Paul Borman at Krystal Technologies.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #if defined(LIBC_SCCS) && !defined(lint)
- static char sccsid[] = "@(#)frune.c 8.1 (Berkeley) 6/4/93";
- #endif /* LIBC_SCCS and not lint */
-
- #include <limits.h>
- #include <rune.h>
- #include <stddef.h>
- #include <stdio.h>
-
- long
- fgetrune(fp)
- FILE *fp;
- {
- rune_t r;
- int c, len;
- char buf[MB_LEN_MAX];
- char const *result;
-
- len = 0;
- do {
- if ((c = getc(fp)) == EOF) {
- if (len)
- break;
- return (EOF);
- }
- buf[len++] = c;
-
- if ((r = sgetrune(buf, len, &result)) != _INVALID_RUNE)
- return (r);
- } while (result == buf && len < MB_LEN_MAX);
-
- while (--len > 0)
- ungetc(buf[len], fp);
- return (_INVALID_RUNE);
- }
-
- int
- fungetrune(r, fp)
- rune_t r;
- FILE* fp;
- {
- int len;
- char buf[MB_LEN_MAX];
-
- len = sputrune(r, buf, MB_LEN_MAX, 0);
- while (len-- > 0)
- if (ungetc(buf[len], fp) == EOF)
- return (EOF);
- return (0);
- }
-
- int
- fputrune(r, fp)
- rune_t r;
- FILE *fp;
- {
- int i, len;
- char buf[MB_LEN_MAX];
-
- len = sputrune(r, buf, MB_LEN_MAX, 0);
-
- for (i = 0; i < len; ++i)
- if (putc(buf[i], fp) == EOF)
- return (EOF);
-
- return (0);
- }
-