fspawn.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 75 行

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*                            Open Watcom Project
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//
// FSPAWN       : execute a program
//

#include "ftnstd.h"

#include <malloc.h>
#include <stddef.h>
#include <string.h>
#include <process.h>
#include <pgmacc.h>


intstar4        fortran FSPAWN( string PGM *cmd, string PGM *args ) {
//===================================================================

    int         len;
    int         arg_len;
    char        *local_cmd;
    char        *local_args;

    len = cmd->len;
    for(;;) {
        if( len == 0 ) return( -1 );
        if( cmd->strptr[ len - 1 ] != ' ' ) break;
        --len;
    }
    local_cmd = alloca( len + 1 );
    pgm_memget( local_cmd, cmd->strptr, len );
    local_cmd[len] = NULLCHAR;

    arg_len = args->len;
    for(;;) {
        if( arg_len == 0 ) break;
        if( args->strptr[ arg_len - 1 ] != ' ' ) break;
        --arg_len;
    }
    local_args = alloca( arg_len + 1 );
    pgm_memget( local_args, args->strptr, arg_len );
    local_args[arg_len] = NULLCHAR;
    return( spawnlp( P_WAIT, local_cmd, local_cmd, local_args, NULL ) );
}