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Use __wcsrtombs() and __sfvwrite() to convert and write the wide character

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string instead of multiple calls to __fputwc().
This commit is contained in:
Tim J. Robbins 2004-07-21 08:35:18 +00:00
parent 05656b6e2b
commit 2f2c1839f8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=132491
1 changed files with 25 additions and 8 deletions
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33
lib/libc/stdio/fputws.c
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@ -1,5 +1,5 @@
/*-
* Copyright (c) 2002 Tim J. Robbins.
* Copyright (c) 2002-2004 Tim J. Robbins.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -32,22 +32,39 @@ __FBSDID("$FreeBSD$");
#include <stdio.h>
#include <wchar.h>
#include "un-namespace.h"
#include "fvwrite.h"
#include "libc_private.h"
#include "local.h"
#include "mblocal.h"
int
fputws(const wchar_t * __restrict ws, FILE * __restrict fp)
{
size_t nbytes;
char buf[BUFSIZ];
struct __suio uio;
struct __siov iov;
FLOCKFILE(fp);
ORIENT(fp, 1);
/* XXX Inefficient */
while (*ws != '\0')
if (__fputwc(*ws++, fp) == WEOF) {
FUNLOCKFILE(fp);
return (-1);
}
if (prepwrite(fp) != 0)
goto error;
uio.uio_iov = &iov;
uio.uio_iovcnt = 1;
iov.iov_base = buf;
do {
nbytes = __wcsrtombs(buf, &ws, sizeof(buf),
&fp->_extra->mbstate);
if (nbytes == (size_t)-1)
goto error;
iov.iov_len = uio.uio_resid = nbytes;
if (__sfvwrite(fp, &uio) != 0)
goto error;
} while (ws != NULL);
FUNLOCKFILE(fp);
return (0);
error:
FUNLOCKFILE(fp);
return (-1);
}