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Clib string & memory functions

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git-svn-id: svn://kolibrios.org@553 a494cfbc-eb01-0410-851d-a64ba20cac60
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Sergey Semyonov (Serge)
2007-06-26 00:54:22 +00:00
parent d5f66e011c
commit 836c97f0ac
162 changed files with 11855 additions and 0 deletions
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programs/develop/open watcom/trunk/clib/string/snprintf.c Normal file
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/****************************************************************************
*
* Open Watcom Project
*
* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
* ========================================================================
*
* This file contains Original Code and/or Modifications of Original
* Code as defined in and that are subject to the Sybase Open Watcom
* Public License version 1.0 (the 'License'). You may not use this file
* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
* provided with the Original Code and Modifications, and is also
* available at www.sybase.com/developer/opensource.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
* NON-INFRINGEMENT. Please see the License for the specific language
* governing rights and limitations under the License.
*
* ========================================================================
*
* Description: Implementation of snprintf().
*
****************************************************************************/
#include "variety.h"
#include "widechar.h"
#include <stdio.h>
#include <stdarg.h>
#include "printf.h"
struct buf_limit {
CHAR_TYPE *bufptr;
size_t bufsize;
};
/*
* buf_putc -- append a character to a string in memory
*/
static slib_callback_t buf_putc; // setup calling convention
static void __SLIB_CALLBACK buf_putc( SPECS __SLIB *specs, int op_char )
{
struct buf_limit *bufinfo;
bufinfo = (struct buf_limit *)specs->_dest;
if( specs->_output_count < bufinfo->bufsize ) {
*( bufinfo->bufptr++ ) = op_char;
}
specs->_output_count++;
}
/*
* buf_count_putc -- only count characters to be output
*/
static slib_callback_t buf_count_putc; // setup calling convention
static void __SLIB_CALLBACK buf_count_putc( SPECS __SLIB *specs, int op_char )
{
specs->_output_count++;
}
_WCRTLINK int __F_NAME(vsnprintf,vsnwprintf) ( CHAR_TYPE *s, size_t bufsize,
const CHAR_TYPE *format, va_list arg)
{
register int len;
auto struct buf_limit bufinfo;
bufinfo.bufptr = s;
bufinfo.bufsize = bufsize - 1;
if( bufsize == 0 )
len = __F_NAME(__prtf,__wprtf)( &bufinfo, format, arg, buf_count_putc );
else {
len = __F_NAME(__prtf,__wprtf)( &bufinfo, format, arg, buf_putc );
s[(( len >= 0 ) && ( len < bufsize )) ? len : bufsize - 1] = '\0';
}
return( len );
}
_WCRTLINK int __F_NAME(snprintf,snwprintf) ( CHAR_TYPE *dest, size_t bufsize,
const CHAR_TYPE *format, ... )
{
auto va_list args;
va_start( args, format );
return( __F_NAME(vsnprintf,vsnwprintf)( dest, bufsize, format, args ) );
}