SimoBSIO - The COBOL Source Code
|
Byte-Stream I/O SimoBSIO - The COBOL Source Code |
| When technology complements business | Copyright © 1987-2012 SimoTime Enterprises All Rights Reserved |
| The SimoTime Home Page |
This document provides a listing of the COBOL source code for the callable routine SimoBSIO. SimoBSIO is a callable routine that uses the Micro Focus Byte-Stream I/O capability to access a file. This routine may access a single byte or multiple bytes of data at the specified offset into the file. SimoBSIO is written and tested using the Micro Focus COBOL dialect (it will only execute in a Micro Focus envirnment, it will not compile and run on a mainframe system).
Additional information about this program may be obtained by sending an e-mail to: helpdesk@simotime.com
The SimoBSIO routine (or callable program) will provide access to a file at the byte level. The routine may access a single byte or multiple bytes in a single access.
The SIMOBSIO Member is a callable subroutine the processes a data file at the "BYTE I/O" level. To process a file it must first be opened. The following will OPEN the file.
move 'C:\MYFILE.DAT' to PSIO-FILENAME
move 'OPEN ' to PSIO-REQUEST
call 'SIMOBSIO' using PSIO-PASS-AREA
The following will READ a 10 byte string of data starting at offset zero. Since the file name was established during the OPEN request it should still be available in the pass area.
move 'READ ' to PSIO-REQUEST
move ZERO to PSIO-OFFSET
move 10 to PSIO-LENGTH
call 'SIMOBSIO' using PSIO-PASS-AREA
The following will CLOSE the file. Since the file name was established during the OPEN request it should still be available in the pass area.
move 'CLOSE ' to PSIO-REQUEST
call 'SIMOBSIO' using PSIO-PASS-AREA
The following is a list of the parameters that are required by the byte-stream I/O routine.
A COBOL Copy File is provided that defines the structure and size of this pass area.
| ||||||||||||||||||
| A List of the Parameters that are Required to use the Byte-Stream I/O |
The following is a list of the keywords used in the (PSIO-REQUEST) field of the pass area that is used by a program making a call to SIMOBSIO.
| ||||||||||||||||||||
| A List of Keywords for the PSIO-REQUEST Field |
The following is the COBOL Source Code.
IDENTIFICATION DIVISION.
PROGRAM-ID. SIMOBSIO.
AUTHOR. SIMOTIME ENTERPRISES.
*****************************************************************
* Copyright (C) 1987-2012 SimoTime Enterprises. *
* *
* All rights reserved. Unpublished, all rights reserved under *
* copyright law and international treaty. Use of a copyright *
* notice is precautionary only and does not imply publication *
* or disclosure. *
* *
* Permission to use, copy, modify and distribute this software *
* for any commercial purpose requires a fee to be paid to *
* SimoTime Enterprises. Once the fee is received by SimoTime *
* the latest version of the software will be delivered and a *
* license will be granted for use within an enterprise, *
* provided the SimoTime copyright notice appear on all copies *
* of the software. The SimoTime name or Logo may not be used *
* in any advertising or publicity pertaining to the use of the *
* software without the written permission of SimoTime *
* Enterprises. *
* *
* Permission to use, copy and modify this software for any *
* non-commercial purpose and without fee is hereby granted, *
* provided the SimoTime copyright notice appear on all copies *
* of the software. The SimoTime name or Logo may not be used *
* in any advertising or publicity pertaining to the use of the *
* software without the written permission of SimoTime *
* Enterprises. *
* *
* SimoTime Enterprises makes no warranty or representations *
* about the suitability of the software for any purpose. It is *
* provided "AS IS" without any expressed or implied warranty, *
* including the implied warranties of merchantability, fitness *
* for a particular purpose and non-infringement. SimoTime *
* Enterprises shall not be liable for any direct, indirect, *
* special or consequential damages resulting from the loss of *
* use, data or projects, whether in an action of contract or *
* tort, arising out of or in connection with the use or *
* performance of this software *
* *
* SimoTime Enterprises *
* 15 Carnoustie Drive *
* Novato, CA 94949-5849 *
* 415.883.6565 *
* *
* RESTRICTED RIGHTS LEGEND *
* Use, duplication, or disclosure by the Government is subject *
* to restrictions as set forth in subparagraph (c)(1)(ii) of *
* the Rights in Technical Data and Computer Software clause at *
* DFARS 52.227-7013 or subparagraphs (c)(1) and (2) of *
* Commercial Computer Software - Restricted Rights at 48 *
* CFR 52.227-19, as applicable. Contact SimoTime Enterprises, *
* 15 Carnoustie Drive, Novato, CA 94949-5849. *
* *
*****************************************************************
* This program is provided by SimoTime Enterprises *
* Our e-mail address is: helpdesk@simotime.com *
* Also, visit our Web Site at http://www.simotime.com *
* *
*****************************************************************
*
* Source Module: SIMOBSIO.CBL
*
* CALL Interface
* ------------
* call 'SIMOBSIO' using PSIO-PASS-AREA
*
* DESCRIPTION
* -----------
* This callable program uses the Byte-Stream I/O capabilities
* provided by Micro Focus to acces a file by reading a single
* byte or multiple bytes based on the caller's request.
*
* MAINTENANCE
* -----------
* 04/27/1992 Provided by SimoTime Enterprises
*
*****************************************************************
*
DATA DIVISION.
WORKING-STORAGE SECTION.
01 SIM-TITLE.
05 T1 pic X(11) value '* SIMOBSIO '.
05 T2 pic X(34) value 'Byte-Stream File I/O Routine '.
05 T3 pic X(10) value ' v08.11.20'.
05 T4 pic X(24) value ' http://www.simotime.com'.
01 SIM-COPYRIGHT.
05 C1 pic X(11) value '* SIMOBSIO '.
05 C2 pic X(20) value 'Copyright 1987-2012 '.
05 C3 pic X(28) value '--- SimoTime Enterprises ---'.
05 C4 pic X(20) value ' All Rights Reserved'.
*****************************************************************
* Data-structure for byte stream files...
*****************************************************************
* Byte Stream Files *
* ----------------- *
* For all the routines the RETURN-CODE register is set to *
* zero if the routine is successful. *
*****************************************************************
* Open a file, Byte Stream File...
* filename space or null terminated
* access-mode 01=read only
* 02=write only, deny-mode must=0
* 03=read/write
* When the x'40' bit is on then large file
* access is enabled (larger than 4-gig)
* 65=read only
* 66=write only, deny-mode must=0
* 67=read/write
* deny-mode 0=deny read/write(exclusive)
* 1=deny write
* 2=deny read
* 3=deny neither read nor write
* device future use, must=0
* file-handle if succesful open
* ------------------------------------------------------------
*
01 BSIO-FILENAME pic X(256) value SPACES.
01 BSIO-ACCESS-MODE pic X comp-x value 1.
01 BSIO-DENY-MODE pic X comp-x value 0.
01 BSIO-DEVICE pic X comp-x value 0.
01 BSIO-FILE-HANDLE pic X(4) value LOW-VALUES.
01 BSIO-FILE-OFFSET pic X(8) comp-x value 1.
01 BSIO-FILE-COUNT pic X(4) comp-x value 1.
01 BSIO-FLAGS pic X comp-x value 0.
01 BSIO-BUFFER pic X(32760) value SPACES.
* One of the following must be moved to BSIO-ACCESS-MODE.
* Standard, File size < 4 gigabytes.
01 BSIO-S-READ pic X comp-x value 1.
01 BSIO-S-WRITE pic X comp-x value 2.
01 BSIO-S-READ-WRITE pic X comp-x value 3.
* Extended, File size = or > 4 gigabytes.
01 BSIO-X-READ pic X comp-x value 65.
01 BSIO-X-WRITE pic X comp-x value 66.
01 BSIO-X-READ-WRITE pic X comp-x value 67.
01 BIG-FILE-SUPPORT pic X value 'Y'.
*****************************************************************
* Data structure for message display and logging... *
*****************************************************************
01 MESSAGE-BUFFER.
05 MESSAGE-HEADER pic X(11) value '* SIMOBSIO '.
05 MESSAGE-TEXT.
10 MESSAGE-TEXT-1 pic X(068) value SPACES.
10 MESSAGE-TEXT-2 pic X(188) value SPACES.
01 FIRST-TIME pic X value 'Y'.
01 IO-STATUS.
05 IO-STAT1 pic X.
05 IO-STAT2 pic X.
01 TWO-BYTES.
05 TWO-BYTES-LEFT pic X.
05 TWO-BYTES-RIGHT pic X.
01 TWO-BYTES-BINARY redefines TWO-BYTES pic 9(4) comp.
*****************************************************************
LINKAGE SECTION.
COPY PASSBSIO.
*****************************************************************
PROCEDURE DIVISION using PSIO-PASS-AREA.
if FIRST-TIME = 'Y'
perform Z-POST-COPYRIGHT
move 'N' to FIRST-TIME
end-if
* Set Access-Mode to Read-Only...
add 1 to ZERO giving BSIO-ACCESS-MODE
evaluate PSIO-REQUEST
when 'READBSIO' perform BSIOX-FILE-READBSIO
when 'OPEN ' perform BSIOX-FILE-OPEN
when 'OPENPUT ' perform BSIOX-FILE-OPEN-PUT
when 'FILEINFO' perform BSIOX-GET-FILE-INFO
when 'CLOSE ' perform BSIOX-FILE-CLOSE
when 'WRITE ' perform BSIOX-FILE-WRITE
when 'CREATE ' perform BSIOX-FILE-CREATE
when '64BITON ' move 'Y' to BIG-FILE-SUPPORT
move ZERO to RETURN-CODE
move ZERO to PSIO-RETURN
when '64BITOFF' move 'N' to BIG-FILE-SUPPORT
move ZERO to RETURN-CODE
move ZERO to PSIO-RETURN
when 'INIT ' perform BSIOX-FILE-INIT
when other perform ABEND-QUIT
end-evaluate
* add RETURN-CODE to ZERO giving PSIO-RETURN
if PSIO-RETURN not = ZERO
perform BSIOX-FILE-CLOSE
end-if
GOBACK.
*****************************************************************
* Do an Abnormal termination of the program...
*****************************************************************
ABEND-QUIT.
if MESSAGE-TEXT not = SPACES
perform Z-DISPLAY-CONSOLE-MESSAGE
end-if
move 'Program return-to-caller with ABEND'
to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
add 16 to ZERO giving RETURN-CODE
add RETURN-CODE to ZERO giving PSIO-RETURN
GOBACK
exit.
*****************************************************************
BSIOX-FILE-READBSIO.
subtract BSIO-FLAGS from BSIO-FLAGS *> normal read
add PSIO-OFFSET to ZERO giving BSIO-FILE-OFFSET
if PSIO-LENGTH > PSIO-MAX-SIZE
add PSIO-MAX-SIZE to zero giving BSIO-FILE-COUNT
move 'ERROR, Short READ, Requested length exceeds MAX'
to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
else
add PSIO-LENGTH to zero giving BSIO-FILE-COUNT
end-if
perform BSIO-READ
if RETURN-CODE = 0
move BSIO-BUFFER to PSIO-BUFFER
move ZERO to PSIO-RETURN
else
if RETURN-CODE = 12592
add 10 to ZERO giving RETURN-CODE
end-if
add RETURN-CODE to ZERO giving PSIO-RETURN
display RETURN-CODE
if RETURN-CODE = 10
add RETURN-CODE to ZERO giving PSIO-RETURN
move SPACES to PSIO-BUFFER
move "End of File..." to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
else
move "Error during file READ..." to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
add RETURN-CODE to ZERO giving TWO-BYTES-BINARY
move TWO-BYTES to IO-STATUS
perform Z-DISPLAY-IO-STATUS
perform ABEND-QUIT
end-if
end-if
exit.
*---------------------------------------------------------------*
BSIOX-FILE-INIT.
move ZEROES to PSIO-RETURN
move SPACES to PSIO-FILENAME
move ZEROES to PSIO-FILE-SIZE
move ZEROES to PSIO-OFFSET
move ZEROES to PSIO-LENGTH
move ZEROES to PSIO-MAX-SIZE
move SPACES to PSIO-BUFFER
exit.
*---------------------------------------------------------------*
BSIOX-FILE-OPEN.
move PSIO-FILENAME to BSIO-FILENAME
if BIG-FILE-SUPPORT = 'N'
add BSIO-S-READ to ZERO giving BSIO-ACCESS-MODE
else
add BSIO-X-READ to ZERO giving BSIO-ACCESS-MODE
end-if
* display BSIO-FILENAME
perform BSIO-OPEN
if RETURN-CODE = 0
add RETURN-CODE to ZERO giving PSIO-RETURN
else
move "Error during file OPEN..." to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
add RETURN-CODE to ZERO giving TWO-BYTES-BINARY
move TWO-BYTES to IO-STATUS
perform Z-DISPLAY-IO-STATUS
perform ABEND-QUIT
end-if
exit.
*---------------------------------------------------------------*
BSIOX-FILE-CREATE.
move PSIO-FILENAME to BSIO-FILENAME
if BIG-FILE-SUPPORT = 'N'
add BSIO-S-WRITE to ZERO giving BSIO-ACCESS-MODE
else
add BSIO-X-WRITE to ZERO giving BSIO-ACCESS-MODE
end-if
* display BSIO-FILENAME
perform BSIO-CREATE
if RETURN-CODE = 0
add RETURN-CODE to ZERO giving PSIO-RETURN
else
move "Error during file CREATE..." to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
add RETURN-CODE to ZERO giving TWO-BYTES-BINARY
move TWO-BYTES to IO-STATUS
perform Z-DISPLAY-IO-STATUS
move PSIO-FILENAME to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
perform ABEND-QUIT
end-if
exit.
*---------------------------------------------------------------*
BSIOX-FILE-OPEN-PUT.
move PSIO-FILENAME to BSIO-FILENAME
if BIG-FILE-SUPPORT = 'N'
add BSIO-S-WRITE to ZERO giving BSIO-ACCESS-MODE
else
add BSIO-X-WRITE to ZERO giving BSIO-ACCESS-MODE
end-if
* display BSIO-FILENAME
perform BSIO-OPEN
if RETURN-CODE = 0
add RETURN-CODE to ZERO giving PSIO-RETURN
else
move "Error during file OPENPUT..." to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
add RETURN-CODE to ZERO giving TWO-BYTES-BINARY
move TWO-BYTES to IO-STATUS
perform Z-DISPLAY-IO-STATUS
perform ABEND-QUIT
end-if
exit.
*---------------------------------------------------------------*
BSIOX-FILE-CLOSE.
perform BSIO-CLOSE
if RETURN-CODE = 0
if PSIO-RETURN not = 10
add RETURN-CODE to ZERO giving PSIO-RETURN
end-if
else
move "Error during file CLOSE..." to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
add RETURN-CODE to ZERO giving TWO-BYTES-BINARY
move TWO-BYTES to IO-STATUS
perform Z-DISPLAY-IO-STATUS
perform ABEND-QUIT
end-if
exit.
*---------------------------------------------------------------*
BSIOX-FILE-WRITE.
subtract BSIO-FLAGS from BSIO-FLAGS
add PSIO-OFFSET to ZERO giving BSIO-FILE-OFFSET
if PSIO-LENGTH > PSIO-MAX-SIZE
add PSIO-MAX-SIZE to zero giving BSIO-FILE-COUNT
move 'ERROR, Short WRITE, Requested length exceeds MAX'
to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
else
add PSIO-LENGTH to zero giving BSIO-FILE-COUNT
end-if
move PSIO-BUFFER to BSIO-BUFFER
perform BSIO-WRITE
if RETURN-CODE = 0
add RETURN-CODE to ZERO giving PSIO-RETURN
move BSIO-BUFFER to PSIO-BUFFER
else
move "Error during file WRITE..." to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
add RETURN-CODE to ZERO giving TWO-BYTES-BINARY
move TWO-BYTES to IO-STATUS
perform Z-DISPLAY-IO-STATUS
perform ABEND-QUIT
end-if
exit.
*---------------------------------------------------------------*
BSIOX-GET-FILE-INFO.
* Get file size into BSIO-FILE-OFFSET
subtract BSIO-FLAGS from BSIO-FLAGS
add 128 to BSIO-FLAGS
perform BSIO-READ
if RETURN-CODE = 0
add RETURN-CODE to ZERO giving PSIO-RETURN
else
move "Error during file READ..." to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
add RETURN-CODE to ZERO giving TWO-BYTES-BINARY
move TWO-BYTES to IO-STATUS
perform Z-DISPLAY-IO-STATUS
perform ABEND-QUIT
end-if
add BSIO-FILE-OFFSET to ZERO giving PSIO-FILE-SIZE
exit.
*---------------------------------------------------------------*
* Byte Stream Files *
* ----------------- *
* For all the routines the RETURN-CODE register is set to *
* zero if the routine is successful. *
*---------------------------------------------------------------*
* Open a file, Byte Stream File... *
* filename space or null terminated *
* access-mode 1=read only *
* 2=write only, deny-mode must=0 *
* 3=read/write *
* deny-mode 0=deny read/write(exclusive) *
* 1=deny write *
* 2=deny read *
* 3=deny neither read nor write *
* device future use, must=0 *
* file-handle if succesful open *
*---------------------------------------------------------------*
BSIO-OPEN.
call "CBL_OPEN_FILE" using BSIO-FILENAME
BSIO-ACCESS-MODE
BSIO-DENY-MODE
BSIO-DEVICE
BSIO-FILE-HANDLE
exit.
*---------------------------------------------------------------*
BSIO-CREATE.
call "CBL_CREATE_FILE" using BSIO-FILENAME
BSIO-ACCESS-MODE
BSIO-DENY-MODE
BSIO-DEVICE
BSIO-FILE-HANDLE
exit.
*---------------------------------------------------------------*
* Read a file, Byte Stream File... *
* file-handle returned from open *
* file-offset offset in file to start read *
* file-count nnn=bytes to read *
* flags 0=standard read *
* 128=return size in file-offset *
* buffer data buffer for read *
*---------------------------------------------------------------*
BSIO-READ.
call "CBL_READ_FILE" using BSIO-FILE-HANDLE
BSIO-FILE-OFFSET
BSIO-FILE-COUNT
BSIO-FLAGS
BSIO-BUFFER
exit.
*---------------------------------------------------------------*
BSIO-WRITE.
call "CBL_WRITE_FILE" using BSIO-FILE-HANDLE
BSIO-FILE-OFFSET
BSIO-FILE-COUNT
BSIO-FLAGS
BSIO-BUFFER
exit.
*---------------------------------------------------------------*
BSIO-CLOSE.
call "CBL_CLOSE_FILE" using BSIO-FILE-HANDLE
exit.
*****************************************************************
* The following Z-Routines perform administrative tasks *
* for this program. *
*****************************************************************
* ABEND the program, post a message to the console and issue *
* a STOP RUN. *
*****************************************************************
Z-ABEND-PROGRAM.
if MESSAGE-TEXT not = SPACES
perform Z-DISPLAY-CONSOLE-MESSAGE
end-if
move 'PROGRAM-IS-ABENDING...' to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
add 12 to ZERO giving RETURN-CODE
STOP RUN
exit.
*****************************************************************
* Display CONSOLE messages... *
*****************************************************************
Z-DISPLAY-CONSOLE-MESSAGE.
if MESSAGE-TEXT-2 = SPACES
display MESSAGE-BUFFER(1:79) upon console
else
display MESSAGE-BUFFER upon console
end-if
move all SPACES to MESSAGE-TEXT
exit.
*****************************************************************
* Display the file status bytes. This routine will display as *
* two digits if the full two byte file status is numeric. If *
* second byte is non-numeric then it will be treated as a *
* binary number. *
*****************************************************************
Z-DISPLAY-IO-STATUS.
if IO-STATUS not NUMERIC
or IO-STAT1 = '9'
subtract TWO-BYTES-BINARY from TWO-BYTES-BINARY
move IO-STAT2 to TWO-BYTES-RIGHT
display '* SIMOBSIO File-Status-' IO-STAT1 '/'
TWO-BYTES-BINARY upon console
else
display '* SIMOBSIO File-Status-' IO-STATUS upon console
end-if
exit.
*****************************************************************
Z-POST-COPYRIGHT.
display SIM-TITLE upon console
display SIM-COPYRIGHT upon console
exit.
*****************************************************************
* This example is provided by SimoTime Enterprises *
* Our e-mail address is: helpdesk@simotime.com *
* Also, visit our Web Site at http://www.simotime.com *
*****************************************************************
The following is the source code for the copy file (PASSBSIO.CPY) that defines the parameters used by the byte-stream I/O routine.
*****************************************************************
* PASSBSIO is a COBOL Copy File *
* Data Structure or Pass Area used for calling SIMOBSIO. *
* Copyright (C) 1987-2012 SimoTime Enterprises *
* All Rights Reserved *
*****************************************************************
* Provided by SimoTime Enterprises *
* Our e-mail address is: helpdesk@simotime.com *
* Also, visit our Web Site at http://www.simotime.com *
*****************************************************************
*
01 PSIO-PASS-AREA.
05 PSIO-REQUEST pic X(8).
05 PSIO-RETURN pic 9(4).
05 PSIO-FILENAME pic X(256).
05 PSIO-FILE-SIZE pic 9(12).
05 PSIO-OFFSET pic 9(12).
05 PSIO-LENGTH pic 9(7).
05 PSIO-MAX-SIZE pic 9(7).
05 PSIO-BUFFER pic X(32760).
*
*** PASSBSIO - End-of-Copy File - - - - - - - - - - - PASSBSIO *
*****************************************************************
*
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Permission to use, copy, modify and distribute this software, documentation or training material for any purpose requires a fee to be paid to SimoTime Enterprises. Once the fee is received by SimoTime the latest version of the software, documentation or training material will be delivered and a license will be granted for use within an enterprise, provided the SimoTime copyright notice appear on all copies of the software. The SimoTime name or Logo may not be used in any advertising or publicity pertaining to the use of the software without the written permission of SimoTime Enterprises.
SimoTime Enterprises makes no warranty or representations about the suitability of the software, documentation or learning material for any purpose. It is provided "AS IS" without any expressed or implied warranty, including the implied warranties of merchantability, fitness for a particular purpose and non-infringement. SimoTime Enterprises shall not be liable for any direct, indirect, special or consequential damages resulting from the loss of use, data or projects, whether in an action of contract or tort, arising out of or in connection with the use or performance of this software, documentation or training material.
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| SimoBSIO - The COBOL Source Code for Byte-Stream I/O |
| Copyright © 1987-2012 SimoTime Enterprises All Rights Reserved |
| When technology complements business |
| http://www.simotime.com |