rfmtinit.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 102 行

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*
*                            Open Watcom Project
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//
// RFMTINIT     : Run-time FORMAT initialization routines
//

#include "ftnstd.h"
#include "rundat.h"
#include "format.h"
#include "fmtdef.h"
#include "fmtdat.h"
#include "rtenv.h"
#include "fmttab.h"

extern  void            SetFmt(char PGM *);
extern  void            R_FEmInit(void);
extern  void            R_FEmEnd(void);
extern  void            R_FDoSpec(void);

extern const FmtElements RFmtStruct;


void    FmtAScan( char PGM *array, long int num_elts, int elt_size,
                  uint extend_format ) {
//=================================================================

// Encode format specification from a character array.

    string      scb;

    _SetIOCB();
    scb.strptr = array;
    scb.len = num_elts * elt_size;
    FmtScan( &scb, extend_format );
  }


void    FmtScan( string *fmt, uint extend_format ) {
//==================================================

    _SetIOCB();
    if( extend_format ) {
        IOCB->flags |= IOF_EXTEND_FORMAT;
    }
    FInit( fmt );
    R_FDoSpec();
    FFinish();
}


static  void    FInit( string *fmt ) {
//====================================

    FmtEmStruct = &RFmtStruct;
    SetFmt( &FmtBuff[ 0 ] );
    IOCB->fmtlen = SCAN_STORAGE_SIZE;
    Fmt_charptr = fmt->strptr;
    Fmt_end = Fmt_charptr + fmt->len;
    Fmt_paren_level = 0;
    Fmt_revert.rt = &FmtBuff[ 0 ];
    Fmt_delimited = NO_DELIM;
    R_FEmInit();
}


static  void    FFinish( void ) {
//=========================

    R_FEmEnd();
    SetFmt( &FmtBuff[ 0 ] );
}