103 lines
6.3 KiB
C
103 lines
6.3 KiB
C
/*----------------------------------------------------------------------------*/
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/* */
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/* Copyright (c) 1995, 2004 IBM Corporation. All rights reserved. */
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/* Copyright (c) 2005-2014 Rexx Language Association. All rights reserved. */
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/* */
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/* This program and the accompanying materials are made available under */
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/* the terms of the Common Public License v1.0 which accompanies this */
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/* distribution. A copy is also available at the following address: */
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/* https://www.oorexx.org/license.html */
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/* */
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/* Redistribution and use in source and binary forms, with or */
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/* without modification, are permitted provided that the following */
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/* conditions are met: */
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/* */
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/* Redistributions of source code must retain the above copyright */
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/* notice, this list of conditions and the following disclaimer. */
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/* Redistributions in binary form must reproduce the above copyright */
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/* notice, this list of conditions and the following disclaimer in */
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/* the documentation and/or other materials provided with the distribution. */
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/* */
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/* Neither the name of Rexx Language Association nor the names */
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/* of its contributors may be used to endorse or promote products */
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/* derived from this software without specific prior written permission. */
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/* */
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/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */
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/* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */
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/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS */
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/* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT */
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/* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
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/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED */
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/* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, */
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/* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY */
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/* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING */
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/* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS */
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/* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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/* */
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/*----------------------------------------------------------------------------*/
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/*********************************************************************/
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/* */
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/* File Name: CALLRXNT.C */
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/* */
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/* Description: Provides a sample call to the REXX */
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/* interpreter, passing in an environment name, */
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/* a file name, and a single argument string. */
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/* */
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/* Entry Points: main - main entry point */
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/* */
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/* Input: None */
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/* */
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/* Output: returns 0 in all cases. */
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/* */
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/*********************************************************************/
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#include <rexx.h> /* needed for RexxStart() */
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#include <stdio.h> /* needed for printf() */
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#include <string.h> /* needed for strlen() */
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int main()
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{
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CONSTRXSTRING arg; /* argument string for REXX */
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RXSTRING rexxretval; /* return value from REXX */
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char *str = "These words will be swapped"; /* text to swap */
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RexxReturnCode rc; /* return code from REXX */
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short rexxrc = 0; /* return code from function */
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printf("\nThis program will call the REXX interpreter ");
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printf("to reverse the order of the\n");
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printf("\twords in a string. ");
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printf("The interpreter is invoked with an initial\n");
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printf("\tenvironment name of 'FNC' ");
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printf("and a file name of 'BACKWARD.FNC'\n\n");
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/* By setting the strlength of the output RXSTRING to zero, we */
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/* force the interpreter to allocate memory and return it to us. */
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/* We could provide a buffer for the interpreter to use instead. */
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rexxretval.strlength = 0L; /* initialize return to empty*/
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MAKERXSTRING(arg, str, strlen(str));/* create input argument */
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/* Here we call the interpreter. */
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rc=RexxStart(1, /* number of arguments */
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&arg, /* array of arguments */
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"BACKWARD.FNC", /* name of REXX file */
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0, /* No INSTORE used */
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"FNC", /* Command env. name */
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RXSUBROUTINE, /* Code for how invoked */
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0, /* No EXITs on this call */
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&rexxrc, /* Rexx program output */
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&rexxretval ); /* Rexx program output */
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printf("Interpreter Return Code: %d\n", rc);
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printf("Function Return Code: %d\n", (int) rexxrc);
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printf("Original String: '%s'\n", arg.strptr);
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printf("Backwards String: '%s'\n", rexxretval.strptr);
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RexxFreeMemory(rexxretval.strptr); /* Release storage */
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/* given to us by REXX. */
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system("PAUSE");
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return 0;
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}
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