477 lines
22 KiB
C++
477 lines
22 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) 2005-2017 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: CALLREXX1.C */
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/* */
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/* ----------------------------------------------------------------- */
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/* */
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/* Description: Samples of how to invoke the Open Object Rexx*/
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/* interpreter. */
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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 from the Open Object Rexx programs */
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/* */
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/*********************************************************************/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include "rexx.h"
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char *pcharTemp;
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int main()
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{
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CONSTRXSTRING arg[4]; /* argument string for Rexx */
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RXSTRING rexxretval; /* return value from Rexx */
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RXSTRING instore[2]; /* in storage parms */
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char *pszTemp;
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RexxReturnCode rc = 0; /* return code from Rexx */
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short rexxrc = 0; /* return code from function */
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int ignore; // avoid warning: ignoring return value of 'int system(const char*)'
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// avoid warning: ignoring return value of 'int scanf(const char*, ...)'
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char val;
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const char *str1 = "Arg number one"; /* text to swap */
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const char *str2 = "Arg number two"; /* text to swap */
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const char *str3 = "Arg number three"; /* text to swap */
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const char *str4 = "Arg number four"; /* text to swap */
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const char *sync_tst = "call time 'Reset';" \
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"object1 = .example~new;" \
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"object2 = .example~new;" \
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"object3 = .example~new;" \
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"a.1 = object1~start('REPEAT', 4 , 'Object 1 running');" \
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"say a.1~result;" \
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"say 'The result method waits until the START message has completed:';" \
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"a.2 = object2~start('REPEAT', 2, 'Object 2 running');" \
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"a.3 = object3~start('REPEAT', 2, 'Object 3 running');" \
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"say a.2~result;" \
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"say a.3~result;" \
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"say 'main ended';" \
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"say 'Elapsed time: ' time('E');" \
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"exit;" \
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"::REQUIRES 'example.rex'";
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/* By setting the strlength of the Rexx output to zero, the */
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/* interpreter allocates memory. */
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/* We can provide a buffer for the interpreter to use instead. */
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/* If the returned value does not fit into the buffer, Open Object Rexx */
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/* creates a new one. */
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ignore = system("clear");
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rexxretval.strptr = NULL; /* initialize return-pointer to empty */
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rexxretval.strlength = 0; /* initialize return-length to zero */
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printf("This is an easy sample of how to invoke the Rexx interpreter. \n");
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printf("The Rexx commandfile which is started is named: startrx1.rex\n");
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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/* This is the interpreter invocation. ---------------------------- */
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rc=RexxStart(
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0, /* number of arguments */
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NULL, /* array of arguments */
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"startrx1.rex", /* name of Rexx file */
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NULL, /* No INSTORE used */
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"ksh", /* Command env. name */
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RXCOMMAND, /* Code for how invoked */
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NULL, /* 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("CALLREXX1 - Back from REXXSTART: Return Code: %d\n", rc);
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printf("CALLREXX1 - RESULT-LENGTH: %zd\n", rexxretval.strlength);
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printf("CALLREXX1 - RESULT-Value: %s\n", rexxretval.strptr);
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RexxFreeMemory(rexxretval.strptr);
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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ignore = system("clear");
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printf("In this case a previously defined Resultstring is \n");
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printf("delivered to Open Object Rexx, which is large enough to \n");
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printf("hold the Return Value of the Rexx commandfile\n");
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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rexxretval.strptr = (char *) malloc(100 * sizeof(char));
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rexxretval.strlength = 100;
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rc=RexxStart(
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0, /* number of arguments */
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NULL, /* array of arguments */
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"startrx1.rex", /* name of Rexx file */
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NULL, /* No INSTORE used */
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"ksh", /* Command env. name */
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RXCOMMAND, /* Code for how invoked */
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NULL, /* 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("CALLREXX1 - Back from REXXSTART: Return Code: %d\n", rc);
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printf("CALLREXX1 - RESULT-LENGTH: %zd\n", rexxretval.strlength);
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printf("CALLREXX1 - RESULT-Value: %s\n", rexxretval.strptr);
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RexxFreeMemory(rexxretval.strptr);
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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ignore = system("clear");
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printf("In this case a previously defined Resultstring is \n");
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printf("delivered to Open Object Rexx, which is too small to\n");
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printf("hold the Return Value of the Rexx commandfile.\n");
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printf("Rexx reallocates the buffer which needs to be freed\n");
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printf("in the calling program\n");
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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rexxretval.strptr = (char *) malloc(2 * sizeof(char));
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pszTemp = rexxretval.strptr;
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rexxretval.strlength = 2;
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printf("The Length of the Resultstring is %zd\n", rexxretval.strlength);
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rc=RexxStart(
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0, /* number of arguments */
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NULL, /* array of arguments */
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"startrx1.rex", /* name of Rexx file */
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NULL, /* No INSTORE used */
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"ksh", /* Command env. name */
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RXCOMMAND, /* Code for how invoked */
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NULL, /* 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("CALLREXX1 - Back from REXXSTART: Return Code: %d\n", rc);
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printf("CALLREXX1 - RESULT-LENGTH: %zd\n", rexxretval.strlength);
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printf("CALLREXX1 - RESULT-Value: %s\n", rexxretval.strptr);
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RexxFreeMemory(rexxretval.strptr);
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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ignore = system("clear");
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rexxretval.strptr = NULL; /* initialize return-pointer to empty */
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rexxretval.strlength = 0; /* initialize return-length to zero */
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printf("This is a sample with 4 arguments delivered to \n");
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printf("REXXSTART\n");
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printf("The Rexx commandfile which is started is named: startrx2.rex\n");
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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MAKERXSTRING(arg[0], str1, strlen(str1)); /* create input argument 1*/
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MAKERXSTRING(arg[1], str2, strlen(str2)); /* create input argument 2*/
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MAKERXSTRING(arg[2], str3, strlen(str3)); /* create input argument 3*/
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MAKERXSTRING(arg[3], str4, strlen(str4)); /* create input argument 4*/
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rc=RexxStart(
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4, /* number of arguments */
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arg, /* array of arguments */
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"startrx2.rex", /* name of Rexx file */
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NULL, /* No INSTORE used */
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"ksh", /* Command env. name */
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RXCOMMAND, /* Code for how invoked */
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NULL, /* 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("CALLREXX1 - Back from REXXSTART: Return Code: %d\n", rc);
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printf("CALLREXX1 - RESULT-LENGTH: %zd\n", rexxretval.strlength);
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printf("CALLREXX1 - RESULT-Value: %s\n", rexxretval.strptr);
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RexxFreeMemory(rexxretval.strptr);
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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ignore = system("clear");
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printf("This is a sample with 2 arguments delivered to \n");
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printf("REXXSTART\n");
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printf("The Rexx commandfile which is started is named: startrx2.rex\n");
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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rexxretval.strptr = NULL; /* initialize return-pointer to empty */
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rexxretval.strlength = 0; /* initialize return-length to zero */
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rc=RexxStart(
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2, /* number of arguments */
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arg, /* array of arguments */
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"startrx2.rex", /* name of Rexx file */
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NULL, /* No INSTORE used */
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"ksh", /* Command env. name */
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RXCOMMAND, /* Code for how invoked */
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NULL, /* 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("CALLREXX1 - Back from REXXSTART: Return Code: %d\n", rc);
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printf("CALLREXX1 - RESULT-LENGTH: %zd\n", rexxretval.strlength);
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printf("CALLREXX1 - RESULT-Value: %s\n", rexxretval.strptr);
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RexxFreeMemory(rexxretval.strptr);
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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ignore = system("clear");
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printf("This is a sample where the directory listing of the \n");
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printf("actual directory is returned by the Rexx program. The \n");
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printf("returned ResultString is displayed\n");
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printf("The Rexx commandfile which is started is named: startrx3.rex\n");
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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rexxretval.strptr = NULL; /* initialize return-pointer to empty */
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rexxretval.strlength = 0; /* initialize return-length to zero */
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rc=RexxStart(
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0, /* number of arguments */
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NULL, /* array of arguments */
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"startrx3.rex", /* name of Rexx file */
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NULL, /* No INSTORE used */
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"ksh", /* Command env. name */
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RXCOMMAND, /* Code for how invoked */
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NULL, /* 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("CALLREXX1 - Back from REXXSTART: Return Code: %d\n", rc);
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printf("CALLREXX1 - RESULT-LENGTH: %zd\n", rexxretval.strlength);
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printf("CALLREXX1 - RESULT-Value: %s\n", rexxretval.strptr);
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RexxFreeMemory(rexxretval.strptr);
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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ignore = system("clear");
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printf("This is a sample where the instore parameter [0] is \n");
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printf("tested. Instore parameter [0] is loaded with \n");
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printf("a small Open Object Rexx script showing the concurrency feature.\n");
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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instore[0].strptr = const_cast<char *>(sync_tst);
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instore[0].strlength = strlen(instore[0].strptr);
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instore[1].strptr = NULL;
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instore[1].strlength = 0;
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rc=RexxStart(
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0, /* number of arguments */
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NULL, /* array of arguments */
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NULL, /* name of Rexx file */
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instore, /* No INSTORE used */
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"ksh", /* Command env. name */
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RXCOMMAND, /* Code for how invoked */
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NULL, /* 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("CALLREXX1 - Back from REXXSTART: Return Code: %d\n", rc);
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printf("CALLREXX1 - RESULT-LENGTH: %zd\n", rexxretval.strlength);
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printf("CALLREXX1 - RESULT-Value: %s\n", rexxretval.strptr);
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RexxFreeMemory(rexxretval.strptr);
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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ignore = system("clear");
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printf("Now instore[1] is loaded with the content of instore[0]. \n");
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printf("It can be used on subsequent calls. instore[0] is set to NULL \n");
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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instore[0].strptr = NULL;
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instore[0].strlength = 0;
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rc=RexxStart(
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0, /* number of arguments */
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NULL, /* array of arguments */
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NULL, /* name of Rexx file */
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instore, /* No INSTORE used */
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"ksh", /* Command env. name */
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RXCOMMAND, /* Code for how invoked */
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NULL, /* 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("CALLREXX1 - Back from REXXSTART: Return Code: %d\n", rc);
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printf("CALLREXX1 - RESULT-LENGTH: %zd\n", rexxretval.strlength);
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printf("CALLREXX1 - RESULT-Value: %s\n", rexxretval.strptr);
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RexxFreeMemory(rexxretval.strptr);
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RexxFreeMemory(instore[1].strptr);
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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ignore = system("clear");
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printf("This is a sample to show how to use the Rexx MacroSpace facility. \n");
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printf("First of all load_macro.rex is called to load \n");
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printf("the Rexx script macros.rex into Macrospace. The Macrospace- \n");
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printf("name is upload.rex. \n");
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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rexxretval.strptr = NULL; /* initialize return-pointer to empty */
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rexxretval.strlength = 0; /* initialize return-length to zero */
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rc=RexxStart(
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0, /* number of arguments */
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NULL, /* array of arguments */
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"load_macro.rex", /* name of Rexx file */
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NULL, /* No INSTORE used */
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"ksh", /* Command env. name */
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RXCOMMAND, /* Code for how invoked */
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NULL, /* 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("CALLREXX1 - Back from REXXSTART: Return Code: %d\n", rc);
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printf("CALLREXX1 - RESULT-LENGTH: %zd\n", rexxretval.strlength);
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printf("CALLREXX1 - RESULT-Value: %s\n", rexxretval.strptr);
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RexxFreeMemory(rexxretval.strptr);
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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ignore = system("clear");
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printf("Now the Open Object Rexx script macros.rex (named upload.rex) has been loaded\n");
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printf("into Macrospace. It is now used in the name option of\n");
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printf("the REXXSTART command. \n");
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printf("It is very important that instore paramenter [0] and [1] are\n");
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printf("initialized to NULL rsp. 0 and used as REXXSTART parameters\n");
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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rexxretval.strptr = NULL; /* initialize return-pointer to empty */
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rexxretval.strlength = 0; /* initialize return-length to zero */
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instore[1].strptr = NULL;
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instore[1].strlength = 0;
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instore[0].strptr = NULL;
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instore[0].strlength = 0;
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rc=RexxStart(
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0, /* number of arguments */
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NULL, /* array of arguments */
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"upload.rex", /* name of Rexx file */
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instore, /* No INSTORE used */
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"ksh", /* Command env. name */
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RXCOMMAND, /* Code for how invoked */
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NULL, /* 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("CALLREXX1 - Back from REXXSTART: Return Code: %d\n", rc);
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printf("CALLREXX1 - RESULT-LENGTH: %zd\n", rexxretval.strlength);
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printf("CALLREXX1 - RESULT-Value: %s\n", rexxretval.strptr);
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RexxFreeMemory(rexxretval.strptr);
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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ignore = system("clear");
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printf("Finally del_macro.rex is called to delete macros.rex (named upload.rex)\n");
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printf("out of the Open Object Rexx Macrospace.\n");
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printf("Press Enter to continue\n");
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ignore = scanf("%c", &val);
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rc=RexxStart(
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0, /* number of arguments */
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NULL, /* array of arguments */
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"del_macro.rex", /* name of Rexx file */
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NULL, /* No INSTORE used */
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"ksh", /* Command env. name */
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RXCOMMAND, /* Code for how invoked */
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NULL, /* 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("CALLREXX1 - Back from REXXSTART: Return Code: %d\n", rc);
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printf("CALLREXX1 - RESULT-LENGTH: %zd\n", rexxretval.strlength);
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printf("CALLREXX1 - RESULT-Value: %s\n", rexxretval.strptr);
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RexxFreeMemory(rexxretval.strptr);
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printf("Press Enter to continue\n");
|
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ignore = scanf("%c", &val);
|
|
|
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ignore = system("clear");
|
|
}
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|
|