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Implement fgetrune(), fungetrune() and fputrune() as wrappers around

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fgetwc(), ungetwc() and fputwc().
This commit is contained in:
tjr 2003-10-31 10:55:19 +00:00
parent a724a8fc6f
commit 1ace50578b
1 changed files with 8 additions and 36 deletions
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44
lib/libc/locale/frune.c
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@ -1,4 +1,5 @@
/*-
* Copyright (c) 2003 Tim J. Robbins. All rights reserved.
* Copyright (c) 1993
* The Regents of the University of California. All rights reserved.
*
@ -47,33 +48,18 @@ __FBSDID("$FreeBSD$");
#include <rune.h>
#include <stddef.h>
#include <stdio.h>
#include <wchar.h>
__warn_references(fgetrune, "warning: fgetrune() is deprecated. See fgetrune(3).");
long
fgetrune(fp)
FILE *fp;
{
rune_t r;
int c, len;
char buf[MB_LEN_MAX];
char const *result;
wint_t ch;
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);
if ((ch = fgetwc(fp)) == WEOF)
return (feof(fp) ? EOF : _INVALID_RUNE);
return ((long)ch);
}
__warn_references(fungetrune, "warning: fungetrune() is deprecated. See fungetrune(3).");
@ -82,14 +68,8 @@ 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);
return (ungetwc((wint_t)r, fp) == WEOF ? EOF : 0);
}
__warn_references(fputrune, "warning: fputrune() is deprecated. See fputrune(3).");
@ -98,14 +78,6 @@ 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);
return (fputwc((wchar_t)r, fp) == WEOF ? EOF : 0);
}