fnxtrecl.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 67 行

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*
*                            Open Watcom Project
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*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*    This file contains Original Code and/or Modifications of Original
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//
// FNXTRECL     : Get next record length
//

#include "ftnstd.h"
#include "rundat.h"
#include "fio.h"

extern  void            IOOk(b_file *);
extern  unsigned_32     FGetVarRecLen(b_file *);

intstar4        fortran FNEXTRECL( intstar4 *unit ) {
//===================================================

    ftnfile     *fcb;
    signed_32   size;


    fcb = Files;
    while( fcb && ( *unit != fcb->unitid ) ) {
        fcb = fcb->link;
    }

    // Lots of error checks
    if( ( fcb == NULL ) || ( fcb->fileptr == NULL ) ||
        !_LogicalRecordOrganization( fcb ) ||
        ( IOCB && (IOCB->flags & IOF_ACTIVE) && (IOCB->fileinfo == fcb) ) ) {
        return( -1 );
    }

    size = FGetVarRecLen( fcb->fileptr );
    IOOk( fcb->fileptr );
    return( size );
}