128 lines
3.7 KiB
C
128 lines
3.7 KiB
C
/****************************************************************************
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*
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* Open Watcom Project
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*
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* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*
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* ========================================================================
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*
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* This file contains Original Code and/or Modifications of Original
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* Code as defined in and that are subject to the Sybase Open Watcom
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* Public License version 1.0 (the 'License'). You may not use this file
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* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
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* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
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* provided with the Original Code and Modifications, and is also
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* available at www.sybase.com/developer/opensource.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
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* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
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* NON-INFRINGEMENT. Please see the License for the specific language
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* governing rights and limitations under the License.
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*
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* ========================================================================
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*
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* Description: WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
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* DESCRIBE IT HERE!
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*
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****************************************************************************/
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#include "variety.h"
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#include "widechar.h"
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#include <stdio.h>
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#include <stdarg.h>
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#include <limits.h>
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#include "printf.h"
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/*
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* mem_putc -- append a character to a string in memory
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*/
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#ifdef __WIDECHAR__
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struct vswprtf_buf {
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CHAR_TYPE *bufptr;
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int chars_output;
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int max_chars;
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};
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static slib_callback_t mem_putc; // setup calling convention
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static void __SLIB_CALLBACK mem_putc( SPECS __SLIB *specs, int op_char )
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{
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struct vswprtf_buf *info;
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info = (struct vswprtf_buf*) specs->_dest;
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if( info->chars_output + 1 <= info->max_chars ) {
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*( info->bufptr++ ) = op_char;
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specs->_output_count++;
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info->chars_output++;
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}
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}
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#else
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static slib_callback_t mem_putc; // setup calling convention
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static void __SLIB_CALLBACK mem_putc( SPECS __SLIB *specs, int op_char )
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{
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*( specs->_dest++ ) = op_char;
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specs->_output_count++;
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}
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#endif
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#ifdef __WIDECHAR__
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_WCRTLINK int vswprintf( CHAR_TYPE *dest, size_t n, const CHAR_TYPE *format, va_list arg )
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{
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slib_callback_t *tmp;
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auto struct vswprtf_buf info;
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#if defined( __386__ ) && defined( __QNX__ )
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/* avoid some segment relocations for 32-bit QNX */
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tmp = (void (*)())mem_putc;
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#else
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tmp = mem_putc;
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#endif
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if( n != 0 ) {
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info.bufptr = dest;
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info.chars_output = 0;
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info.max_chars = n - 1;
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__wprtf( &info, format, arg, tmp );
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dest[info.chars_output] = NULLCHAR;
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}
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return( info.chars_output );
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}
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#endif
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_WCRTLINK int __F_NAME(vsprintf,_vswprintf) ( CHAR_TYPE *dest, const CHAR_TYPE *format, va_list arg )
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{
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slib_callback_t *tmp;
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#ifndef __WIDECHAR__
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register int len;
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#else
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auto struct vswprtf_buf info;
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#endif
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#if defined( __386__ ) && defined( __QNX__ )
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/* avoid some segment relocations for 32-bit QNX */
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tmp = (void (*)())mem_putc;
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#else
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tmp = mem_putc;
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#endif
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#ifdef __WIDECHAR__
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info.bufptr = dest;
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info.chars_output = 0;
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info.max_chars = INT_MAX;
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__wprtf( &info, format, arg, tmp );
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dest[info.chars_output] = NULLCHAR;
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return( info.chars_output );
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#else
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len = __prtf( dest, format, arg, tmp );
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dest[len] = NULLCHAR;
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return( len );
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#endif
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}
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