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Changed the multibyte character functions so they work with the native 

single byte character set.
This commit is contained in:
jtc 1995-03-05 07:41:15 +00:00
parent ae6284d5ba
commit 3baa1f1967
1 changed files with 41 additions and 16 deletions
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57
lib/libc/stdlib/multibyte.c
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@ -33,15 +33,15 @@
#if defined(LIBC_SCCS) && !defined(lint)
/*static char *sccsid = "from: @(#)multibyte.c 5.1 (Berkeley) 2/18/91";*/
static char *rcsid = "$Id: multibyte.c,v 1.3 1993/08/26 00:48:04 jtc Exp $";
static char *rcsid = "$Id: multibyte.c,v 1.4 1995/03/05 07:41:15 jtc Exp $";
#endif /* LIBC_SCCS and not lint */
#include <stdlib.h>
/*
* Stub multibyte character functions.
* These ignore the current fixed ("C") locale and
* always indicate that no multibyte characters are supported.
* This cheezy implementation is fixed to the native single-byte
* character set.
*/
int
@ -49,9 +49,11 @@ mblen(s, n)
const char *s;
size_t n;
{
if (s && n && *s)
if (s == NULL || *s == '\0')
return 0;
if (n == 0)
return -1;
return 0;
return 1;
}
/*ARGSUSED*/
@ -61,9 +63,13 @@ mbtowc(pwc, s, n)
const char *s;
size_t n;
{
if (s && n && *s)
if (s == NULL)
return 0;
if (n == 0)
return -1;
return 0;
if (pwc)
*pwc = (wchar_t) *s;
return (*s != '\0');
}
/*ARGSUSED*/
@ -76,9 +82,11 @@ wctomb(s, wchar)
wchar_t wchar;
#endif
{
if (s)
return -1;
return 0;
if (s == NULL)
return 0;
*s = (char) wchar;
return 1;
}
/*ARGSUSED*/
@ -88,9 +96,17 @@ mbstowcs(pwcs, s, n)
const char *s;
size_t n;
{
if (s && n && *s)
return -1;
return 0;
int count = 0;
if (n != 0) {
do {
if ((*pwcs++ = (wchar_t) *s++) == 0)
break;
count++;
} while (--n != 0);
}
return count;
}
/*ARGSUSED*/
@ -100,7 +116,16 @@ wcstombs(s, pwcs, n)
const wchar_t *pwcs;
size_t n;
{
if (pwcs && n && *pwcs)
return -1;
return 0;
int count = 0;
if (n != 0) {
do {
if ((*s++ = (char) *pwcs++) == 0)
break;
count++;
} while (--n != 0);
}
return count;
}