poscc.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 88 行

/****************************************************************************
*
*                            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:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
*               DESCRIBE IT HERE!
*
****************************************************************************/


#include "ftnstd.h"
#include "fio.h"
#include "posio.h"

static  char            FFSeq[] = { LF, FF };     // for form feeds
static  char            SpcSeq[] = { LF,          // for single spacing
                                     CR, LF,      // for double spacing
                                     CR, LF };    // for triple spacing

#define FF_SEQ_LEN      sizeof( FFSeq );
#define SPC_SEQ_LEN     sizeof( SpcSeq );


static  bool    __lf_with_ff = { FALSE };


void    __LineFeedWithFormFeed( void ) {
//================================

    __lf_with_ff = TRUE;
}


int     FSetCC( a_file *io, char asa, char **cc ) {
//=================================================

// Output ASA carriage control character to a file.

    uint        cc_len;

    cc_len = 0;
    if( asa == '1' ) {
        *cc = FFSeq;
        cc_len = FF_SEQ_LEN;
        if( !__lf_with_ff ) {
            (*cc)++;
            --cc_len;
        }
    } else if( asa != '+' ) {
        *cc = SpcSeq;
        cc_len = SPC_SEQ_LEN;
        if( io->attrs & CC_NOLF ) {
            (*cc)++;
            cc_len--;
        }
        if( asa != '-' ) {
            cc_len -= 2;
            if( asa != '0' ) {
                cc_len -= 2;
            }
        }
    }
    io->attrs |= CC_NOLF;
    return( cc_len );
}