rexxhide.cpp

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/*----------------------------------------------------------------------------*/
/*                                                                            */
/* Copyright (c) 1995, 2004 IBM Corporation. All rights reserved.             */
/* Copyright (c) 2005-2009 Rexx Language Association. All rights reserved.    */
/*                                                                            */
/* This program and the accompanying materials are made available under       */
/* the terms of the Common Public License v1.0 which accompanies this         */
/* distribution. A copy is also available at the following address:           */
/* http://www.oorexx.org/license.html                          */
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/* without modification, are permitted provided that the following            */
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/* notice, this list of conditions and the following disclaimer.              */
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/* the documentation and/or other materials provided with the distribution.   */
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/* of its contributors may be used to endorse or promote products             */
/* derived from this software without specific prior written permission.      */
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/*********************************************************************/
/*                                                                   */
/*  File Name:          REXXHIDE.C                                   */
/*                                                                   */
/*  Calling REXX without creating any console                        */
/*********************************************************************/
 
#include <windows.h>
#include <oorexxapi.h>                      /* needed for RexxStart()     */
#include <malloc.h>
#include <string.h>                         /* needed for strlen()        */
#include <stdio.h>
#include <io.h>
 
#include "ArgumentParser.h"  /* defines getArguments and freeArguments */
 
//
//  MAIN program
//
int WINAPI WinMain(
    HINSTANCE hInstance,    // handle to current instance
    HINSTANCE hPrevInstance,    // handle to previous instance
    LPSTR lpCmdLine,    // pointer to command line
    int nCmdShow)
{
    int32_t rc;                          /* actually running program RC       */
    const char *program_name;            /* name to run                       */
    CHAR  arg_buffer[1024];              /* starting argument buffer         */
    CONSTRXSTRING arguments;             /* rexxstart argument                */
    size_t argcount;
 
    rc = 0;                              /* set default return                */
 
    strcpy(arg_buffer, lpCmdLine);
    getArguments(&program_name, arg_buffer, &argcount, &arguments);
 
    if (program_name == NULL)
    {
        /* give a simple error message       */
        MessageBox(NULL, "Syntax: REXXHIDE ProgramName [parameter_1....parameter_n]\n", "Wrong Arguments", MB_OK | MB_ICONHAND);
        return -1;
    }
    else                               /* real program execution            */
    {
        RexxInstance        *pgmInst;
        RexxThreadContext   *pgmThrdInst;
        RexxArrayObject      rxargs, rxcargs;
        RexxDirectoryObject  dir;
        RexxObjectPtr        result;
        int i;
        int argc;                            // parsed count of arguments
        PCHAR *argv;                         // parsed out arguments
 
        // parse the arguments into argv/argc format
        argv = CommandLineToArgvA(lpCmdLine, &argc);
 
        RexxCreateInterpreter(&pgmInst, &pgmThrdInst, NULL);
        // configure the traditional single argument string
        if ( arguments.strptr != NULL )
        {
            rxargs = pgmThrdInst->NewArray(1);
            pgmThrdInst->ArrayPut(rxargs, pgmThrdInst->NewString(arguments.strptr, arguments.strlength), 1);
        }
        else
        {
            rxargs = pgmThrdInst->NewArray(0);
        }
 
        // set up the C args into the .local environment
        dir = (RexxDirectoryObject)pgmThrdInst->GetLocalEnvironment();
        if ( argc > 2 )
        {
            rxcargs = pgmThrdInst->NewArray(argc - 2);
        }
        else
        {
            rxcargs = pgmThrdInst->NewArray(0);
        }
 
        for (i = 2; i < argc; i++)
        {
            pgmThrdInst->ArrayPut(rxcargs, pgmThrdInst->NewStringFromAsciiz(argv[i]), i - 1);
        }
 
        pgmThrdInst->DirectoryPut(dir, rxcargs, "SYSCARGS");
 
        LocalFree(argv);        // released the parsed argguments
        // call the interpreter
        result = pgmThrdInst->CallProgram(program_name, rxargs);
        // display any error message if there is a condition.  if there was an
        // error, then that will be our return code. we know error code will fit
        // in an int32_t.
        rc = (int32_t)pgmThrdInst->DisplayCondition();
        if (rc != 0)
        {
            sprintf(arg_buffer, "Open Object Rexx program execution failure: rc = %d",rc);
            MessageBox(NULL, arg_buffer, "Execution Error", MB_OK | MB_ICONHAND);
 
            pgmInst->Terminate();
            return -rc;   // well, the negation of the error number is the return code
        }
        if (result != NULL)
        {
            pgmThrdInst->ObjectToInt32(result, &rc);
        }
 
        pgmInst->Terminate();
    }
 
    return rc;
}