348 lines
15 KiB
C
348 lines
15 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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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <Windows.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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/*********************************************************************/
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/* ApiFncTable */
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/* Array of names of the REXXApi functions. */
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/* This list is used for registration and deregistration. */
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/*********************************************************************/
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static PSZ ApiFncTable[] =
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{
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"Api_Exchange_Data",
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"ApiDeregFunc",
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"Api_Read_All_Variables_From_REXX_VP",
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"Api_Read_All_Elements_Of_A_Specific_Stem_From_REXX_VP"
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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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LONG REXXENTRY ApiLoadFuncs(
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PSZ name, /* Function name */
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LONG numargs, /* Number of arguments */
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RXSTRING args[], /* Argument array */
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PSZ 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(PSZ);
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for (j = 0; j < entries; j++)
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{
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RexxRegisterFunctionDll(ApiFncTable[j],
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"REXXAPI3", 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: 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: null string *
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*************************************************************************/
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LONG REXXENTRY ApiDeregFunc(
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PSZ name, /* Function name */
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LONG numargs, /* Number of arguments */
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RXSTRING args[], /* Argument array */
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PSZ 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->strlength = 0; /* set return value */
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if (numargs > 0)
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return INVALID_ROUTINE;
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entries = sizeof(ApiFncTable)/sizeof(PSZ);
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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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RexxDeregisterFunction("ApiLoadFuncs");
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return VALID_ROUTINE;
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}
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/*************************************************************************
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* Function: Api_Read_All_Variables_From_REXX_VP *
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* *
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* Syntax: call Api_Read_All_Variables_From_REXX_VP *
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* *
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* Params: No parameter required. The function is called by Apitest3. *
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* It uses a while loop to read all the variables in the active*
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* REXX-variable pool. The shared variable block request code *
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* is RXSHV_NEXTV. Be aware that with this request code REXX *
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* treads every Stem variable as a variable itself (not the *
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* whole stem). This gives the calling C-routine a chance *
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* to clear up memory which was previously allocated by REXX *
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* for every returned variable. If you don't free memory, the *
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* system will run out of storage. *
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* Be aware that the returned variables are NOT in any spe- *
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* cified order. *
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*************************************************************************/
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LONG REXXENTRY Api_Read_All_Variables_From_REXX_VP(
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PSZ name, /* Function name */
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LONG numargs, /* Number of arguments */
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RXSTRING args[], /* Argument array */
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PSZ queuename, /* Current queue */
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PRXSTRING retstr ) /* Return RXSTRING */
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{
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SHVBLOCK rxshv;
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SHVBLOCK *prxshv = &rxshv;
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RexxReturnCode rc;
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int i = 1;
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strcpy(retstr->strptr, "0");
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retstr->strlength = strlen(retstr->strptr);
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prxshv->shvnext = NULL;
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prxshv->shvname.strlength = 0;
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prxshv->shvname.strptr = NULL; /* let rexx allocate it for me */
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prxshv->shvvalue.strptr = NULL; /* let rexx allocate it for me */
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/* Another way would be to assign an existing buffer and specify its max. length */
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prxshv->shvcode = RXSHV_NEXTV;
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/* Now reading all variables from the REXX-variable pool ***********/
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rc = RexxVariablePool(prxshv);
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if (rc)
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{
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if (rc != RXSHV_LVAR)
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{
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printf("ERROR: shvret is %x hex after var nr. %d \n",rc,i);
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return INVALID_ROUTINE;
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}
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}
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if (prxshv->shvvalue.strlength)
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printf("Name of the variable from the Variable Pool: %s, Value: %s \n", prxshv->shvname.strptr, prxshv->shvvalue.strptr);
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else
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printf("Name of the variable from the Variable Pool: %s, Empty\n", prxshv->shvname.strptr);
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i++;
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RexxFreeMemory((void *)prxshv->shvname.strptr); /* free pointers allocated by REXX */
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RexxFreeMemory(prxshv->shvvalue.strptr); /* free pointers allocated by REXX */
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while (!prxshv->shvret)
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{
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prxshv->shvret = 0;
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prxshv->shvnext = NULL;
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prxshv->shvname.strlength = 0;
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prxshv->shvname.strptr = NULL; /* let rexx allocate it for me */
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prxshv->shvvalue.strptr = NULL; /* let rexx allocate it for me */
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prxshv->shvcode = RXSHV_NEXTV;
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rc = RexxVariablePool(prxshv);
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if (rc)
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{
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if (rc== RXSHV_MEMFL)
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{
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strcpy(retstr->strptr, "Allocation error occured");
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retstr->strlength = strlen(retstr->strptr);
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return VALID_ROUTINE;
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}
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else if (rc != RXSHV_LVAR)
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{
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printf("ERROR: shvret is %x hex after var nr. %d\n",rc,i);
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return INVALID_ROUTINE;
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}
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}
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i++;
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if (!prxshv->shvret)
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{
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if (prxshv->shvvalue.strlength)
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printf("Name of the variable from the Variable Pool: %s, Value: %s \n", prxshv->shvname.strptr, prxshv->shvvalue.strptr);
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else
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printf("Name of the variable from the Variable Pool: %s, Empty\n", prxshv->shvname.strptr);
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RexxFreeMemory((void *)prxshv->shvname.strptr); /* free pointers allocated by REXX */
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RexxFreeMemory(prxshv->shvvalue.strptr); /* free pointers allocated by REXX */
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}
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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_Read_All_Elements_Of_A_Specific_Stem_From_REXX_VP *
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* *
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* Syntax: call Api_Read_All_Elements_Of_A_Specific_Stem_From_REXX_VP *
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* with the stem variable the values should be returned *
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* *
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* Params: A stem where all values of the stem variables should be *
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* returned. *
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* The shared variable block request code is RXSHV_SYFET. *
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* Only ONE call is necessary *
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* *
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*************************************************************************/
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LONG REXXENTRY Api_Read_All_Elements_Of_A_Specific_Stem_From_REXX_VP(
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PSZ name, /* Function name */
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LONG numargs, /* Number of arguments */
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RXSTRING args[], /* Argument array */
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PSZ queuename, /* Current queue */
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PRXSTRING retstr ) /* Return RXSTRING */
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{
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SHVBLOCK rxshv;
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SHVBLOCK *prxshv = &rxshv, *temp, *interim;
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RexxReturnCode rc;
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char array[20], value[10];
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char pch[64], *result;
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char *varName;
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int chars;
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int j, k = 0;
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if (numargs != 1 ) /* validate arg count */
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return INVALID_ROUTINE;
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strcpy(retstr->strptr, "0");
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retstr->strlength = strlen(retstr->strptr);
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strncpy(pch, args[0].strptr, 64);
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prxshv->shvnext = NULL;
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prxshv->shvname.strptr = pch; /* here we use our own buffer that is limited to 64 characters */
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prxshv->shvname.strlength = strlen(pch);
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prxshv->shvvalue.strptr = NULL; /* let rexx allocate for me */
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prxshv->shvcode = RXSHV_SYFET;
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rc = RexxVariablePool(prxshv);
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if (rc)
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{
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strcpy(retstr->strptr, "ApiFETCH failed \n");
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retstr->strlength = strlen(retstr->strptr);
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return VALID_ROUTINE;
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}
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j = atoi(prxshv->shvvalue.strptr);
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chars = '.';
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result = strrchr(pch, chars);
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result++;
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*result = 0x00;
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temp = prxshv;
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memset(array, 0x00, sizeof(array));
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memset(value, 0x00, sizeof(value));
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for (k = 1;k <= j; k++)
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{
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temp->shvnext = (PSHVBLOCK)malloc(sizeof(SHVBLOCK)); /* allocate a new node */
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temp = temp->shvnext;
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if (!temp)
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{
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strcpy(retstr->strptr, "Allocation error occured");
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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(array, pch);
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sprintf(value, "%d", k);
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strcat(array, value);
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temp->shvnext = NULL;
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temp->shvname.strlength = strlen(array);
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varName = malloc(strlen(array)+1);
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strcpy(varName, array);
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temp->shvname.strptr = varName;
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temp->shvvalue.strptr = NULL; /* let rexx allocate it for me */
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temp->shvcode = RXSHV_SYFET;
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}
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temp = prxshv->shvnext; /* first allocated one */
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rc = RexxVariablePool(temp);
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if (rc)
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{
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if (rc== RXSHV_MEMFL)
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{
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strcpy(retstr->strptr, "Allocation error occured");
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retstr->strlength = strlen(retstr->strptr);
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return VALID_ROUTINE;
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}
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else if (rc != RXSHV_LVAR)
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{
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printf("ERROR: shvret is %x hex after var nr. %d\n",rc,k);
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return INVALID_ROUTINE;
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}
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}
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for (k = 1;k <= j; k++)
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{
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printf("Name of the Stem-variable from the Variable Pool: %s, Value: %s \n", temp->shvname.strptr,temp->shvvalue.strptr);
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free((void *)temp->shvname.strptr); /* allocated by us and therefore freed with free */
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RexxFreeMemory(temp->shvvalue.strptr); /* allocated by REXX and therefore freed by RexxFreeMemory */
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interim = temp;
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temp = temp->shvnext; /* process next in list */
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free(interim); /* free current node */
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}
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RexxFreeMemory(prxshv->shvvalue.strptr); /* allocated by REXX and freed by RexxFreeMemory */
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return VALID_ROUTINE;
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}
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