270 lines
12 KiB
C
270 lines
12 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) 2005-2021 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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/* rexxasp1.c Open Object Rexx samples */
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/* */
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/* ----------------------------------------------------------------------- */
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/* */
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/* Description: functions used by Open Object REXX script */
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/* */
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/***************************************************************************/
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <rexx.h>
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/*********************************************************************/
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/* Numeric Return calls */
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/*********************************************************************/
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#define INVALID_ROUTINE 40 /* Raise Rexx error */
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#define VALID_ROUTINE 0 /* Successful completion */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*********************************************************************/
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/* ApiFncTable */
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/* Array of names of the REXXASP1 functions. */
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/* This list is used for registration and deregistration. */
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/*********************************************************************/
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static const char *ApiFncTable[] =
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{
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"Api_Output_From_C",
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"Api_Output_From_REXX",
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"Api_Exchange_Data",
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"ApiDeregFunc"
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};
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/*************************************************************************
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* Function: ApiLoadFuncs *
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* *
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* Syntax: call ApiLoadFuncs *
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* *
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* Params: none *
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* *
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* Return: null string *
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*************************************************************************/
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RexxReturnCode REXXENTRY ApiLoadFuncs(
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const char *name, /* Function name */
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size_t numargs, /* Number of arguments */
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CONSTRXSTRING args[], /* Argument array */
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const char * queuename, /* Current queue */
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PRXSTRING retstr ) /* Return RXSTRING */
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{
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int entries; /* Num of entries */
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int j; /* Counter */
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entries = sizeof(ApiFncTable)/sizeof(const char *);
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for (j = 0; j < entries; j++)
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{
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RexxRegisterFunctionDll(ApiFncTable[j], "rexxapi1", ApiFncTable[j]);
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}
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retstr->strlength = 0; /* return null string */
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return VALID_ROUTINE;
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}
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/*************************************************************************
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* Function: ApiDeregFunc *
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* *
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* Syntax: call ApiDeregFuncs *
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* *
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* Params: none *
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* *
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* Return: no return value *
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*************************************************************************/
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RexxReturnCode REXXENTRY ApiDeregFunc(
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const char *name, /* Function name */
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size_t numargs, /* Number of arguments */
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CONSTRXSTRING args[], /* Argument array */
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const char * queuename, /* Current queue */
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PRXSTRING retstr ) /* Return RXSTRING */
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{
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int entries; /* Num of entries */
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int j; /* Counter */
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retstr->strptr = NULL; /* no return value */
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if (numargs > 0)
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return INVALID_ROUTINE;
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entries = sizeof(ApiFncTable)/sizeof(const char *);
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for (j = 0; j < entries; j++)
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{
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RexxDeregisterFunction(ApiFncTable[j]);
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}
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return VALID_ROUTINE;
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}
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/*************************************************************************
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* Function: Api_Output_From_C *
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* *
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* Syntax: call Api_Output_From_C *
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* *
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* Params: none *
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* *
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* Return: Version of this Api support DLL *
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*************************************************************************/
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RexxReturnCode REXXENTRY Api_Output_From_C(
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const char *name, /* Function name */
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size_t numargs, /* Number of arguments */
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CONSTRXSTRING args[], /* Argument array */
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const char * queuename, /* Current queue */
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PRXSTRING retstr ) /* Return RXSTRING */
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{
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if (numargs > 0)
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{
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strcpy(retstr->strptr, "Api_OutPut_From_C does not support any Arguments");
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retstr->strlength = strlen(retstr->strptr);
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return VALID_ROUTINE;
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}
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printf("This Output is generated and displayed by the C-function Api_Output_From_C\n");
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fflush(NULL);
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strcpy(retstr->strptr, "1.0"); /* set return value to be "1.0" */
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retstr->strlength = 3;
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return VALID_ROUTINE;
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}
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/*************************************************************************
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* Function: Api_Output_From_REXX *
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* *
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* Syntax: call Api_Output_From_C *
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* *
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* Params: none *
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* *
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* Return: String to be output by Rexx *
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*************************************************************************/
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RexxReturnCode REXXENTRY Api_Output_From_REXX(
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const char *name, /* Function name */
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size_t numargs, /* Number of arguments */
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CONSTRXSTRING args[], /* Argument array */
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const char * queuename, /* Current queue */
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PRXSTRING retstr ) /* Return RXSTRING */
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{
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if (numargs > 0)
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{
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strcpy(retstr->strptr, "Api_Output_From_REXX does not support any Arguments");
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retstr->strlength = strlen(retstr->strptr);
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return VALID_ROUTINE;
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}
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strcpy(retstr->strptr, "This Output is generated by the C-function Api_Output_From_REXX and displayed by REXX");
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retstr->strlength = strlen(retstr->strptr);
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return VALID_ROUTINE;
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}
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/*************************************************************************
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* Function: Api_Exchange_Data *
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* *
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* Syntax: call Api_Exchange_Data startsect, numsects, outbuf *
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* *
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* Params: parm1 - numeric value given by REXX *
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* parm2 - numeric value given by REXX *
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* outbuf - variable given by REXX *
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* *
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* Return: 0 - success, 1 - failure *
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*************************************************************************/
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RexxReturnCode REXXENTRY Api_Exchange_Data(
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const char *name, /* Function name */
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size_t numargs, /* Number of arguments */
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CONSTRXSTRING args[], /* Argument array */
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const char * queuename, /* Current queue */
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PRXSTRING retstr ) /* Return RXSTRING */
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{
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int parm1 = 0;
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int parm2 = 0;
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char outbuf[255];
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/* we expect 3 arguments */
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if (numargs != 3 )
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{
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printf("Api_Exchange_Data function expects 3 arguments, instead received: %lu\n", numargs);
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fflush(NULL);
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strcpy(retstr->strptr, "1"); // return failure
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retstr->strlength = 1;
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return VALID_ROUTINE;
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}
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/* read the values from the parameters */
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parm1 = atoi(args[0].strptr);
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parm2 = atoi(args[1].strptr);
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strcpy(outbuf, args[2].strptr);
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printf("Api_Exchange_Data function has received following arguments:\n\tArgument 1: %d\n\tArgument 2: %d\n\tArgument 3: %s\n",
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parm1, parm2, outbuf);
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fflush(NULL);
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strcpy(retstr->strptr, "0"); // return success
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retstr->strlength = 1;
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return VALID_ROUTINE;
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}
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#ifdef __cplusplus
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}
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#endif
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