Elapsed Number of Days
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Date Difference Elapsed Number of Days |
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| The SimoTime Home Page |
Introduction
This suite of programs provides an example of a techniques that may be used to calculate the number-of-days difference between two Gregorian dates in the ccyymmdd format. Allowances have been made for leap years with the four-year and four-hundred-year cycles. Three COBOL programs are provided. The first program is a demonstration program that reads a file containing "DATEDIFF" records and calls the second COBOL program that calculates the number-of-days difference between the two dates. The third program does the date validation, formatting and conversion. The COBOL programs are written using the COBOL/2 dialect but also work with COBOL for MVS and COBOL/370. A JCL member is provided to run the job as an MVS batch job on an IBM mainframe or as a project with Micro Focus Mainframe Express (MFE) running on a PC with Windows. This program may serve as a tutorial for new programmers and as a reference for experienced programmers. Additional information is provided in the Downloads and Links to Similar Pages section of this document.
We have made a significant effort to ensure the documents and software technologies are correct and accurate. We reserve the right to make changes without notice at any time. The function delivered in this version is based upon the enhancement requests from a specific group of users. The intent is to provide changes as the need arises and in a timeframe that is dependent upon the availability of resources.
Copyright © 1987-2025
SimoTime Technologies and Services
All Rights Reserved
Programming Objectives
The following is a list of the functions provided in this example.
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| Determine Properties and Elapsed Time for and between Date Values |
Programming Input and Output
The following is an example of the contents of the input or date-difference file (SYSUT1).
DATEDIFF 19420124 19430522 DATEDIFF 20000401 20011225 DATEDIFF 20001315 20001689 DATEDIFF 2001/01/01 20010105 DATEDIFF 1999-01-32 1999-02-30 DATEDIFF 1999-02/15 2000-02/15 DATEDIFF 1995/03/15 1996/03/15 DATEDIFF 19420124 20011109 DATEDIFF 14920101 20010201 DATEDIFF 19951230 19960102 DATEDIFF 20031230 20040301
The following is an example of the output file (SYSUT2) based on the preceding date-difference file.
* CBLDAYC1 Difference Between Two Dates v03.01.24 http://www.simotime.com * CBLDAYC1 Copyright 1987-2012 --- SimoTime Enterprises --- All Rights Reserved * CBLDAYC1 ******************************************************************** * CBLDAYC1 DATEDIFF 19420124 19430522 * CBLDAYC1 Difference in days..... 0000483 * CBLDAYC1 ******************************************************************** * CBLDAYC1 DATEDIFF 20000401 20011225 * CBLDAYC1 Difference in days..... 0000633 * CBLDAYC1 ******************************************************************** * CBLDAYC1 DATEDIFF 20001315 20001689 * SIMODATE NOK for Date Value, MM not 1 through 12... * SIMODATE Program is ABENDING... * CBLDAYC1 NOK for Date Value, MM not 1 through 12... * CBLDAYC1 ******************************************************************** * CBLDAYC1 DATEDIFF 2001/01/01 20010105 * CBLDAYC1 Difference in days..... 0000004 * CBLDAYC1 ******************************************************************** * CBLDAYC1 DATEDIFF 1999-01-32 1999-02-30 * SIMODATE NOK for Day Value, DD not within month range... * SIMODATE Program is ABENDING... * CBLDAYC1 NOK for Day Value, DD not within month range... * CBLDAYC1 ******************************************************************** * CBLDAYC1 DATEDIFF 1999-02/15 2000-02/15 * CBLDAYC1 Difference in days..... 0000365 * CBLDAYC1 ******************************************************************** * CBLDAYC1 DATEDIFF 1995/03/15 1996/03/15 * CBLDAYC1 Difference in days..... 0000366 * CBLDAYC1 ******************************************************************** * CBLDAYC1 DATEDIFF 19420124 20011109 * CBLDAYC1 Difference in days..... 0021838 * CBLDAYC1 ******************************************************************** * CBLDAYC1 DATEDIFF 14920101 20010201 * CBLDAYC1 Difference in days..... 0185942 * CBLDAYC1 ******************************************************************** * CBLDAYC1 DATEDIFF 19951230 19960102 * CBLDAYC1 Difference in days..... 0000003 * CBLDAYC1 ******************************************************************** * CBLDAYC1 DATEDIFF 20031230 20040301 * CBLDAYC1 Difference in days..... 0000062 * CBLDAYC1 SYSUT1 line count is 0000011 * CBLDAYC1 is Complete... * CBLDAYC1 Thank you for using this software provided from SimoTime Enterprises * CBLDAYC1 Please send all inquires or suggestions to the helpdesk@simotime.com
Programming Requirements
This suite of samples programs will run on the following platforms.
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| Operating Systems and Supporting Software |
Programming Overview
The following diagram is an overview of how the demonstration program fits into the example. The demonstration program will read the date difference file (SYSUT1) that contains two different dates in each record, call the date routines and write the resulting difference in days to the output file (SYSUT2).
Color Associations: The
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| Field Name | Description | ||||||||||||
| DDF-REQUEST | This is an eight character data string and should contain the following in upper case.
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| DDF-RESPONSE | This is a four byte binary data string and is used by the calculation program to pass a return code. If the calcualtion request is successful the value in this data string will be zero. | ||||||||||||
| DDF-MESSAGE-TEXT | If a non-zero response occurs this field will contain a short message. | ||||||||||||
| DDF-GREGORIAN-DATE-1 |
This is the primary input date field in gregorian format that will be used by the calculation program. If the gregorian date does not pass the editing process a message will be posted in the DDF-MESSAGE-TEXT field and a non-zero value of 16 will be placed in the DDF-RESPONSE field. SimoDATE is somewhat flexible in accepting and reformatting a gregorian date. For example, the following are acceptable and will be reformatted.
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| DDF-GREGORIAN-DATE-2 |
This is the secondary input date field in gregorian format that will be used by the calculation program. If the gregorian date does not pass the editing process a message will be posted in the DDF-MESSAGE-TEXT field and a non-zero value of 16 will be placed in the DDF-RESPONSE field. SimoDATE is somewhat flexible in accepting and reformatting a gregorian date. For example, the following are acceptable and will be reformatted.
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| DDF-DIFFERENCE-IN-DAYS | This field contains the number-of-days difference between the primary and secondary dates. The contents of this field is provided by the calculation program. | ||||||||||||
| DDF-JULIAN-DATE-1 | This field contains the julian date for the primary gregorian date. The contents of this field is provided by the calculation program. | ||||||||||||
| DDF-DAYS-REMAINING-1 | This field is used for the number-of-days remaining in the year specified as the primary date. The contents of this field is provided by the calculation program. | ||||||||||||
| DDF-JULIAN-DATE-2 | This field contains the julian date for the secondary gregorian date. The contents of this field is provided by the calculation program. | ||||||||||||
| DDF-DAYS-REMAINING-2 | This field is used for the number-of-days remaining in the year specified as the secondary date. The contents of this field is provided by the calculation program. |
The CMD Files
This sample suite of programs has two CMD members. The first CMD member will execute the demonstration program. The second CMD member will create a Date Difference file.
Run the Date-Difference Job
The following is the CMD file (CBLDAYE1.cmd) required to run the demonstration program on a Personal Computer with Micro Focus Net Express.
@echo OFF
rem * *******************************************************************
rem * CBLDAYE1.CMD - a Windows Command File *
rem * This program is provided by SimoTime Technologies *
rem * (C) Copyright 1987-2019 All Rights Reserved *
rem * Web Site URL: http://www.simotime.com *
rem * e-mail: helpdesk@simotime.com *
rem * *******************************************************************
rem *
rem * Text - Read a file of Date Records, calculate differences.
rem * Author - SimoTime Technologies
rem * Date - January 24, 1996
rem *
rem * The job will read an 80-byte file that contains two dates per record
rem * record. The job will then calculate the difference between the two
rem * dates by number of days...
rem *
rem * This set of programs will run on a Personal Computer with Windows
rem * and Micro Focus Net Express.
rem *
rem * ************
rem * * CblDayE1 *
rem * ********cmd*
rem * *
rem * ************
rem * * If Exist *
rem * *******stmt*
rem * *
rem * ************ ************ ************
rem * * SimoEXEC ******* SIMOLOGS ******* CONSOLE *
rem * ********cbl* * ********cbl* * ************
rem * * * *
rem * * * * ************
rem * * * **** SYSLOG *
rem * * * ********txt*
rem * * *
rem * * **************************
rem * * *
rem * * ************ ************ ************
rem * * * SYSUT1 ******* CblDayC1 ******* SYSUT2 *
rem * * ********txt* ********cbl* ********csv*
rem * *
rem * ************
rem * * EOJ *
rem * ************
rem *
rem * *******************************************************************
rem * Step 1 0f 3, Delete any previously created file...
rem *
set CmdName=CBlDayE1
call ..\Env1BASE %CmdName%
rem *
call SimoNOTE "*******************************************************%CmdName%"
call SimoNOTE "Starting JobName %CmdName%"
:DeleteQSAM
call SimoNOTE "Identify JobStep DeleteQSAM"
set SYSUT1=%BaseLib1%\DATA\Asc1\TWODATES.DAT
set SYSUT2=%BaseLib1%\DATA\Wrk1\SIMOTIME.DATA.DIFFDAYS.DAT
if exist %SYSUT2% del %SYSUT2%
rem *
rem * *******************************************************************
rem * Step 2 of 3, Edit input, create a new output file...
rem *
:ExecuteDateDifferenceRoutine
call SimoNOTE "Identify JobStep ExecuteDateDifferenceRoutine"
run CBLDAYC1
rem * *******************************************************************
rem * Step 3 of 3, ConvertRecord Sequential File to ASCII/TEXT file...
rem *
call SimoNOTE "Identify JobStep Convert Line Sequential to Record Sequential"
set GETRS080=%BaseLib1%\DATA\Wrk1\SIMOTIME.DATA.DIFFDAYS.DAT
set PUTLS080=%BaseLib1%\DATA\TXT1\SIMOTIME.DATA.DIFFDAYS.txt
if exist %PUTLS080% del %PUTLS080%
run CV80ARAL
if exist %PUTLS080% call SimoNOTE "Produced DataSet %PUTLS080%"
call SimoNOTE "Finished CmdName %CmdName%"
:End
call SimoNOTE "Conclude SysLog is %SYSLOG%"
if not "%1" == "nopause" pause
Create a Date-Difference File
The following is the CMD file (CBLDAYE2.cmd) that may be used to create a date-difference file that is used as input..
@echo OFF
rem * *******************************************************************
rem * CBLDAYE2.CMD - a Windows Command File *
rem * This program is provided by SimoTime Technologies *
rem * (C) Copyright 1987-2019 All Rights Reserved *
rem * Web Site URL: http://www.simotime.com *
rem * e-mail: helpdesk@simotime.com *
rem * *******************************************************************
rem *
rem * Text - Create a Sequential Data Set on disk using ECHO function.
rem * Author - SimoTime Technologies
rem * Date = January 24, 1996
rem *
rem * The first job step (DeleteQSAM) will delete any previously created
rem * file. The second job step (CreateQSAM) will create a new file.
rem *
rem * This set of programs will run on a Personal Computer with Windows
rem * and Micro Focus Net Express.
rem *
set CmdName=CblDayE2
call ..\Env1BASE %CmdName%
call SimoNOTE "*******************************************************%CmdName%"
call SimoNOTE "Starting JobName %CmdName%"
rem *
rem * *******************************************************************
rem * Step 1 of 3, Delete previously created QSAM file...
rem *
:DeleteQSAM
call SimoNOTE "Identify JobStep DeleteQSAM"
set SYSUT1=%BaseLib1%\DATA\Txt1\TWODATES.TXT
if exist %SYSUT1% del %SYSUT1%
rem *
rem * *******************************************************************
rem * Step 2 of 3, Create and populate a new QSAM file...
rem *
:CreateQSAM
call SimoNOTE "Identify JobStep CreateQSAM"
rem *....1....:....2....:....3....:....4....:....5....:....6....:....7....:....8
echo DATEDIFF 16000101 19420124 >%SYSUT1%
echo DATEDIFF 16000101 20000228 >>%SYSUT1%
echo DATEDIFF 16000101 20000301 >>%SYSUT1%
echo DATEDIFF 20000401 20011225 >>%SYSUT1%
echo DATEDIFF 20001315 20001689 >>%SYSUT1%
echo DATEDIFF 2001/01/01 20010105 >>%SYSUT1%
echo DATEDIFF 1999-01-32 1999-02-30 >>%SYSUT1%
echo DATEDIFF 1999-02/15 2000-02/15 >>%SYSUT1%
echo DATEDIFF 1995/03/15 1996/03/15 >>%SYSUT1%
echo DATEDIFF 19420124 20011109 >>%SYSUT1%
echo DATEDIFF 14920101 20010201 >>%SYSUT1%
echo DATEDIFF 19951230 19960102 >>%SYSUT1%
echo DATEDIFF 20031230 20040301 >>%SYSUT1%
echo DATEDIFF 20000101 20010101 >>%SYSUT1%
echo DATEDIFF 19000101 19010101 >>%SYSUT1%
echo DATEDIFF 18000101 18010101 >>%SYSUT1%
echo DATEDIFF 17000101 17010101 >>%SYSUT1%
echo DATEDIFF 16000101 16010101 >>%SYSUT1%
echo DATEDIFF 18000101 19010101 >>%SYSUT1%
rem *
rem * *******************************************************************
rem * Step 3 of 3, Convert ASCII/TEXT file to ASCII RSEQ File...
rem *
call SimoNOTE "StepInfo Convert Line Sequential to Record Sequential"
set GETLS080=%SYSUT1%
set PUTRS080=%BaseLib1%\DATA\Asc1\TWODATES.DAT
if exist %PUTRS080% del %PUTRS080%
run CV80ALAR
if not ERRORLEVEL = 0 set JobStatus=0030
if not %JobStatus% == 0000 goto :EojNok
call SimoNOTE "DataTake %GETLS080%"
call SimoNOTE "DataMake %PUTRS080%"
call SimoNOTE "Finished JobName %CmdName%"
:End
call SimoNOTE "Conclude SysLog is %SYSLOG%"
if not "%1" == "nopause" pause
The JCL Members
This sample suite of programs has two JCL members. The first JCL member will execute the demonstration program. The second JCL member will create a DATE-DIFF file.
Run the Date-Difference Job
The following is the JCL member (CBLDAYJ1.jcl) required to run the demonstration program on the mainframe or with Micro Focus Mainframe Express.
//CBLDAYJ1 JOB SIMOTIME,CLASS=1,MSGCLASS=0,NOTIFY=CSIP1 //* ******************************************************************* //* CBLDAYJ1.JCL - a JCL Member for Batch Job Processing * //* This JCL Member is provided by SimoTime Technologies * //* (C) Copyright 1987-2019 All Rights Reserved * //* Web Site URL: http://www.simotime.com * //* e-mail: helpdesk@simotime.com * //* ******************************************************************* //* //* Text - Read a file of Date Cards, calculate difference in days. //* Author - SimoTime Technologies //* Date - January 24, 1996 //* //* The job will read an 80-byte file that contains DATEDIFF //* requests. The job will also write a file containing the results //* of the date-difference calculation. //* //* This set of programs will run on a mainframe under MVS or on a //* Personal Computer with Windows and Micro Focus Mainframe Express. //* //* ************ //* * CBLDAYJ1 * //* ********jcl* //* * //* ************ //* * IEFBR14 * //* ************ //* * //* ************ ************ ************ //* * SYSUT1 *-----* CBLDAYC1 *-----* SYSUT2 * //* ************ ************ ************ //* * //* ************ //* * EOJ * //* ************ //* //* ******************************************************************* //* Step 1 of 2, Delete any previously created file... //* //QSAMDELT EXEC PGM=IEFBR14 //QSYSUT2 DD DSN=SIMOTIME.DATA.DIFFDAYS,DISP=(MOD,DELETE,DELETE), // STORCLAS=MFI, // SPACE=(TRK,5), // DCB=(RECFM=FB,LRECL=80,BLKSIZE=800,DSORG=PS) //* //* ******************************************************************* //* Step 2 of 2, Edit input, create a new output file... //* //EXECDAT1 EXEC PGM=CBLDAYC1 //STEPLIB DD DSN=SIMOTIME.DEMO.LOADLIB1,DISP=SHR //SYSUT1 DD DSN=SIMOTIME.DATA.DIFFDATE,DISP=SHR //SYSUT2 DD DSN=SIMOTIME.DATA.DIFFDAYS, // DISP=(NEW,CATLG,DELETE), // STORCLAS=MFI, // SPACE=(TRK,5), // DCB=(RECFM=FB,LRECL=80,BLKSIZE=800,DSORG=PS) //SYSOUT DD SYSOUT=* //
Create a Date-Difference File
The following is the JCL member (CBLDAYJ2.jcl) that may be used to create a date-diff file that will be used as input.
//CBLDAYJ2 JOB SIMOTIME,CLASS=1,MSGCLASS=0,NOTIFY=CSIP1 //* ******************************************************************* //* CBLDAYJ2.JCL - a JCL Member for Batch Job Processing * //* This JCL Member is provided by SimoTime Technologies * //* (C) Copyright 1987-2019 All Rights Reserved * //* Web Site URL: http://www.simotime.com * //* e-mail: helpdesk@simotime.com * //* ******************************************************************* //* //* Text - Create a Sequential Data Set on disk using IEBGENER. //* Author - SimoTime Technologies //* Date - January 24, 1996 //* //* The first job step (DELTQSAM) will delete any previously created //* file. The second job step (CRTQNAME) will create a new file. //* //* This set of programs will run on a mainframe under MVS or on a //* Personal Computer with Windows and Micro Focus Mainframe Express. //* //* ******************************************************************* //* Step 1 of 2, Delete any previously created file... //* //QSAMDELT EXEC PGM=IEFBR14 //SYSUT2 DD DSN=SIMOTIME.DATA.DIFFDATE,DISP=(MOD,DELETE,DELETE), // STORCLAS=MFI, // SPACE=(TRK,5), // DCB=(RECFM=FB,LRECL=80,BLKSIZE=800,DSORG=PS) //* //* ******************************************************************* //* Step 2 of 2, Create and populate a new QSAM file... //* //QCRTDIN1 EXEC PGM=IEBGENER //SYSPRINT DD SYSOUT=* //SYSIN DD DUMMY //* :....1....:....2....:....3....:....4....:....5....:....6....:....7. //SYSUT1 DD * DATEDIFF 19420124 19430522 DATEDIFF 20000401 20011225 DATEDIFF 20001315 20001689 DATEDIFF 2001/01/01 20010105 DATEDIFF 1999-01-32 1999-02-30 DATEDIFF 1999-02/15 2000-02/15 DATEDIFF 1995/03/15 1996/03/15 DATEDIFF 19420124 20011109 DATEDIFF 14920101 20010201 DATEDIFF 19951230 19960102 DATEDIFF 20031230 20040301 DATEDIFF 15821014 19880516 /* //SYSUT2 DD DSN=SIMOTIME.DATA.DIFFDATE, // DISP=(NEW,CATLG,DELETE), // STORCLAS=MFI, // SPACE=(TRK,5), // DCB=(RECFM=FB,LRECL=80,BLKSIZE=800,DSORG=PS) //
The COBOL Programs
This example includes three COBOL programs. The primary program reads a file containing records with a set of two dates in a cccc-mm-dd format. The primary program calls the COBOL routines to process the dates and the "difference in days" information is written to an output file and posted to the SYSOUT device.
The Primary Program
The demonstration program (CBLDAYC1.cbl) will read the date difference file (SYSUT1), call the date routines and write the results to the output file (SYSUT2). The following is the source code listing for the demonstration program.
IDENTIFICATION DIVISION.
PROGRAM-ID. CBLDAYC1.
AUTHOR. SIMOTIME TECHNOLOGIES.
*****************************************************************
* Copyright (C) 1987-2019 SimoTime Technologies. *
* *
* 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 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 *
* Technologies. *
* *
* Permission to use, copy, modify and distribute this software *
* for any commercial purpose requires a fee to be paid to *
* SimoTime Technologies. 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 *
* Technologies. *
* *
* SimoTime Technologies 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 *
* Technologies 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 Technologies *
* 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 Technologies, *
* 15 Carnoustie Drive, Novato, CA 94949-5849. *
* *
*****************************************************************
* This program is provided by SimoTime Technologies *
* Our e-mail address is: helpdesk@simotime.com *
* Also, visit our Web Site at http://www.simotime.com *
* *
*****************************************************************
*
*****************************************************************
* Source Member: CBLDAYC1.CBL
* Copy Files: CBLDAYB1.CPY
* Calls to: CBLDAYC2
* SIMODATE via CBLDAYC2
*****************************************************************
ENVIRONMENT DIVISION.
INPUT-OUTPUT SECTION.
FILE-CONTROL.
SELECT SYSUT1-FILE ASSIGN to SYSUT1
ORGANIZATION is SEQUENTIAL
ACCESS MODE is SEQUENTIAL
FILE STATUS is SYSUT1-STATUS.
SELECT SYSUT2-FILE ASSIGN to SYSUT2
ORGANIZATION is SEQUENTIAL
ACCESS MODE is SEQUENTIAL
FILE STATUS is SYSUT2-STATUS.
*
*****************************************************************
DATA DIVISION.
FILE SECTION.
FD SYSUT1-FILE
BLOCK CONTAINS 00800 CHARACTERS
DATA RECORD is SYSUT1-RECORD
.
01 SYSUT1-RECORD.
05 SYSUT1-DATA-01.
10 SYSUT1-KEYWORD pic X(0008).
10 SYSUT1-BLANK pic X.
10 SYSUT1-G1 pic X(10).
10 filler pic X(5).
10 SYSUT1-G2 pic X(10).
10 filler pic X(46).
*
FD SYSUT2-FILE
BLOCK CONTAINS 00800 CHARACTERS
DATA RECORD is SYSUT2-RECORD
.
01 SYSUT2-RECORD.
05 SYSUT2-DATA-01 pic X(00080).
*
WORKING-STORAGE SECTION.
01 SIM-TITLE.
05 T1 pic X(11) value '* CBLDAYC1 '.
05 T2 pic X(34) value 'Difference Between Two Dates '.
05 T3 pic X(10) value ' v03.01.24'.
05 T4 pic X(24) value ' http://www.simotime.com'.
01 SIM-COPYRIGHT.
05 C1 pic X(11) value '* CBLDAYC1 '.
05 C2 pic X(20) value 'Copyright 1987-2019 '.
05 C3 pic X(28) value ' SimoTime Technologies '.
05 C4 pic X(20) value ' All Rights Reserved'.
*
01 SIM-THANKS-01.
05 C1 pic X(11) value '* CBLDAYC1 '.
05 C2 pic X(32) value 'Thank you for using this program'.
05 C3 pic X(32) value ' provided from SimoTime Technolo'.
05 C4 pic X(04) value 'gies'.
01 SIM-THANKS-02.
05 C1 pic X(11) value '* CBLDAYC1 '.
05 C2 pic X(32) value 'Please send all inquires or sugg'.
05 C3 pic X(32) value 'estions to the helpdesk@simotime'.
05 C4 pic X(04) value '.com'.
*
01 MESSAGE-BUFFER.
05 MESSAGE-HEADER pic X(11) value '* CBLDAYC1 '.
05 MESSAGE-TEXT.
10 MESSAGE-TEXT-1 pic X(68) value SPACES.
10 MESSAGE-TEXT-2 pic X(188) value SPACES.
*
01 SYSUT1-STATUS.
05 SYSUT1-STATUS-L pic X.
05 SYSUT1-STATUS-R pic X.
01 SYSUT1-EOF pic X value 'N'.
01 SYSUT1-OPEN-FLAG pic X value 'C'.
*
01 SYSUT2-STATUS.
05 SYSUT2-STATUS-L pic X.
05 SYSUT2-STATUS-R pic X.
01 SYSUT2-EOF pic X value 'N'.
01 SYSUT2-OPEN-FLAG pic X value 'C'.
*
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.
*
01 APPL-RESULT pic S9(9) comp.
88 APPL-AOK value 0.
88 APPL-EOF value 16.
*
01 SYSUT1-TOTAL.
05 filler pic X(21) value 'SYSUT1 line count is '.
05 SYSUT1-LOC pic 9(7) value 0.
*
*****************************************************************
* The following copy file of the pass area for calling SIMODATE,
* the date editing routine.
*****************************************************************
*
COPY CBLDAYB1.
*
*****************************************************************
PROCEDURE DIVISION.
perform Z-POST-COPYRIGHT
perform SYSUT1-OPEN
perform SYSUT2-OPEN
*
perform until SYSUT1-STATUS not = '00'
perform SYSUT1-READ
if SYSUT1-STATUS = '00'
add 1 to SYSUT1-LOC
perform DATE-DIFFERENCE-CALCULATION
if DDF-RESPONSE = 0
perform DATE-FUNCTION-DISPLAY
else
move DDF-MESSAGE-TEXT to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
move DDF-MESSAGE-TEXT to SYSUT2-DATA-01
perform SYSUT2-WRITE
end-if
end-if
end-perform
*
move SYSUT1-TOTAL to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
*
if APPL-EOF
move 'is Complete...' to MESSAGE-TEXT
else
move 'is ABENDING...' to MESSAGE-TEXT
end-if
perform Z-DISPLAY-CONSOLE-MESSAGE
*
perform SYSUT2-CLOSE
perform SYSUT1-CLOSE
perform Z-THANK-YOU.
GOBACK.
*
*****************************************************************
* The following routines are in alphabetical sequence.. *
*****************************************************************
*
*****************************************************************
DATE-FUNCTION-DISPLAY.
move 'Difference in days..... ' to MESSAGE-TEXT
move DDF-DIFFERENCE-IN-DAYS to MESSAGE-TEXT(25:7)
move MESSAGE-TEXT to SYSUT2-DATA-01
perform Z-DISPLAY-CONSOLE-MESSAGE
perform SYSUT2-WRITE
exit.
*
*****************************************************************
DATE-DIFFERENCE-CALCULATION.
move all '*' to MESSAGE-TEXT-1
perform Z-DISPLAY-CONSOLE-MESSAGE
move all '*' to SYSUT2-DATA-01
perform SYSUT2-WRITE
move SYSUT1-DATA-01 to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
move SYSUT1-DATA-01 to SYSUT2-DATA-01
perform SYSUT2-WRITE
move 'DATEDIFF' to DDF-REQUEST
move SYSUT1-G1 to DDF-GREGORIAN-DATE-1
move SYSUT1-G2 to DDF-GREGORIAN-DATE-2
call 'CBLDAYC2' using DDF-PASS-AREA
exit.
*
*****************************************************************
* I/O ROUTINES FOR SYSUT1... *
*****************************************************************
SYSUT1-CLOSE.
add 8 to ZERO giving APPL-RESULT.
close SYSUT1-FILE
if SYSUT1-STATUS = '00'
subtract APPL-RESULT from APPL-RESULT
else
add 12 to ZERO giving APPL-RESULT
end-if
if APPL-AOK
CONTINUE
else
move 'SYSUT1-Failure-CLOSE...' to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
move SYSUT1-STATUS to IO-STATUS
perform Z-DISPLAY-IO-STATUS
perform Z-ABEND-PROGRAM
end-if
exit.
*---------------------------------------------------------------*
SYSUT1-READ.
read SYSUT1-FILE
if SYSUT1-STATUS = '00'
subtract APPL-RESULT from APPL-RESULT
else
if SYSUT1-STATUS = '10'
add 16 to ZERO giving APPL-RESULT
else
add 12 to ZERO giving APPL-RESULT
end-if
end-if
if APPL-AOK
CONTINUE
else
if APPL-EOF
move 'Y' to SYSUT1-EOF
else
move 'SYSUT1-Failure-GET...' to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
move SYSUT1-STATUS to IO-STATUS
perform Z-DISPLAY-IO-STATUS
perform Z-ABEND-PROGRAM
end-if
end-if
exit.
*---------------------------------------------------------------*
SYSUT1-OPEN.
add 8 to ZERO giving APPL-RESULT.
open input SYSUT1-FILE
if SYSUT1-STATUS = '00'
subtract APPL-RESULT from APPL-RESULT
move 'O' to SYSUT1-OPEN-FLAG
else
add 12 to ZERO giving APPL-RESULT
end-if
if APPL-AOK
CONTINUE
else
move 'SYSUT1-Failure-OPEN...' to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
move SYSUT1-STATUS to IO-STATUS
perform Z-DISPLAY-IO-STATUS
perform Z-ABEND-PROGRAM
end-if
exit.
*
*****************************************************************
* I/O ROUTINES FOR SYSUT2... *
*****************************************************************
SYSUT2-WRITE.
if SYSUT2-OPEN-FLAG = 'C'
perform SYSUT2-OPEN
end-if
write SYSUT2-RECORD
if SYSUT2-STATUS = '00'
subtract APPL-RESULT from APPL-RESULT
else
if SYSUT2-STATUS = '10'
add 16 to ZERO giving APPL-RESULT
else
add 12 to ZERO giving APPL-RESULT
end-if
end-if.
if APPL-AOK
CONTINUE
else
move 'SYSUT2-Failure-WRITE...' to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
move SYSUT2-STATUS to IO-STATUS
perform Z-DISPLAY-IO-STATUS
perform Z-ABEND-PROGRAM
end-if
exit.
*---------------------------------------------------------------*
SYSUT2-OPEN.
add 8 to ZERO giving APPL-RESULT.
open output SYSUT2-FILE
if SYSUT2-STATUS = '00'
subtract APPL-RESULT from APPL-RESULT
move 'O' to SYSUT2-OPEN-FLAG
else
add 12 to ZERO giving APPL-RESULT
end-if
if APPL-AOK
CONTINUE
else
move 'SYSUT2-Failure-OPEN...' to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
move SYSUT2-STATUS to IO-STATUS
perform Z-DISPLAY-IO-STATUS
perform Z-ABEND-PROGRAM
end-if
exit.
*---------------------------------------------------------------*
SYSUT2-CLOSE.
add 8 to ZERO giving APPL-RESULT.
close SYSUT2-FILE
if SYSUT2-STATUS = '00'
subtract APPL-RESULT from APPL-RESULT
move 'C' to SYSUT2-OPEN-FLAG
else
add 12 to ZERO giving APPL-RESULT
end-if
if APPL-AOK
CONTINUE
else
move 'SYSUT2-Failure-CLOSE...' to MESSAGE-TEXT
perform Z-DISPLAY-CONSOLE-MESSAGE
move SYSUT2-STATUS to IO-STATUS
perform Z-DISPLAY-IO-STATUS
perform Z-ABEND-PROGRAM
end-if
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)
else
display MESSAGE-BUFFER
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 '* CBLDAYC1 File-Status-' IO-STAT1 '/'
TWO-BYTES-BINARY upon console
display '* CBLDAYC1 File-Status-' IO-STAT1 '/'
TWO-BYTES-BINARY
else
display '* CBLDAYC1 File-Status-' IO-STATUS upon console
display '* CBLDAYC1 File-Status-' IO-STATUS
end-if
exit.
*
*****************************************************************
Z-POST-COPYRIGHT.
display SIM-TITLE
display SIM-COPYRIGHT
exit.
*
*****************************************************************
Z-THANK-YOU.
display SIM-THANKS-01
display SIM-THANKS-02
exit.
*****************************************************************
* This example is provided by SimoTime Technologies *
* Our e-mail address is: helpdesk@simotime.com *
* Also, visit our Web Site at http://www.simotime.com *
*****************************************************************
The Difference-in-Days Routine
The following (CBLDAYC2.cbl) is the source code listing for the program that calculates the difference-in-days between two dates.
IDENTIFICATION DIVISION.
PROGRAM-ID. CBLDAYC2.
AUTHOR. SIMOTIME TECHNOLOGIES.
*****************************************************************
* Copyright (C) 1987-2019 SimoTime Technologies. *
* *
* 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 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 *
* Technologies. *
* *
* Permission to use, copy, modify and distribute this software *
* for any commercial purpose requires a fee to be paid to *
* SimoTime Technologies. 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 *
* Technologies. *
* *
* SimoTime Technologies 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 *
* Technologies 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 Technologies *
* 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 Technologies, *
* 15 Carnoustie Drive, Novato, CA 94949-5849. *
* *
*****************************************************************
* This program is provided by SimoTime Technologies *
* Our e-mail address is: helpdesk@simotime.com *
* Also, visit our Web Site at http://www.simotime.com *
* *
*****************************************************************
*
*****************************************************************
* Source Member: CBLDAYC2.CBL
* Copy Files: PASSDATE.CPY
* Calls to: SIMODATE
*****************************************************************
*
DATA DIVISION.
*
WORKING-STORAGE SECTION.
01 SIM-TITLE.
05 T1 pic X(11) value '* CBLDAYC2 '.
05 T2 pic X(34) value 'Calculate Date Differences in Days'.
05 T3 pic X(10) value ' v04.03.18'.
05 T4 pic X(24) value ' http://www.simotime.com'.
01 SIM-COPYRIGHT.
05 C1 pic X(11) value '* CBLDAYC2 '.
05 C2 pic X(20) value 'Copyright 1987-2019 '.
05 C3 pic X(28) value ' SimoTime Technologies '.
05 C4 pic X(20) value ' All Rights Reserved'.
*
01 MESSAGE-BUFFER.
05 MESSAGE-HEADER pic X(11) value '* CBLDAYC2 '.
05 MESSAGE-TEXT.
10 MESSAGE-TEXT-1 pic X(68) value SPACES.
10 MESSAGE-TEXT-2 pic X(188) value SPACES.
*
01 APPL-RESULT pic S9(9) comp.
88 APPL-AOK value 0.
88 APPL-EOF value 16.
*
01 DIFF-OF-YEARS pic 9(4) value 0.
01 DIFF-OF-DAYS pic 9(7) value 0.
01 MULTIPLE-YEARS pic 9(7) value 0.
01 NUMBER-OF-LEAP-YEARS pic 9(7) value 0.
01 HOLD-REMAINDER-1 pic 9(7) value 0.
01 HOLD-REMAINDER-2 pic 9(7) value 0.
01 REGISTER-7-0 pic 9(7) value 0.
*
*****************************************************************
* The following copy file of the pass area for calling CBLDAYB1,
* the date difference routine.
*****************************************************************
*
COPY PASSDATE.
*
LINKAGE SECTION.
*****************************************************************
* The following copy file of the pass area for calling CBLDAYB1,
* the date difference routine.
*****************************************************************
*
COPY CBLDAYB1.
*
*****************************************************************
PROCEDURE DIVISION using DDF-PASS-AREA.
*
initialize DDF-JULIAN-DATE-1
initialize DDF-JULIAN-DATE-2
initialize DDF-DIFFERENCE-IN-DAYS
*
perform DATE-DIFF-1-EDIT
*
if DDF-RESPONSE = 0
perform DATE-DIFF-2-EDIT
end-if
*
if DDF-RESPONSE = 0
if DDF-JULIAN-DATE-1 > DDF-JULIAN-DATE-2
add 20 to ZERO giving DDF-RESPONSE
move 'The primary date is > secondary date'
to DDF-MESSAGE-TEXT
end-if
end-if
*
if DDF-RESPONSE = 0
perform DATE-DIFF-CALCULATION
end-if
*
GOBACK.
*
*****************************************************************
* The following routines are in alphabetical sequence.. *
*****************************************************************
*
*****************************************************************
DATE-DIFF-1-EDIT.
move DDF-GREGORIAN-DATE-1 to STD-GREGORIAN-4-EDIT
perform DATE-FUNCTION-EDIT
add STD-RESPONSE to ZERO giving DDF-RESPONSE
if STD-RESPONSE = 0
move SPACES to DDF-MESSAGE-TEXT
move STD-JULIAN-DATE to DDF-JULIAN-DATE-1
move STD-DAYS-REMAINING to DDF-DAYS-REMAINING-1
else
move STD-MESSAGE-TEXT to DDF-MESSAGE-TEXT
end-if
exit.
*****************************************************************
DATE-DIFF-2-EDIT.
move DDF-GREGORIAN-DATE-2 to STD-GREGORIAN-4-EDIT
perform DATE-FUNCTION-EDIT
add STD-RESPONSE to ZERO giving DDF-RESPONSE
if STD-RESPONSE = 0
move SPACES to DDF-MESSAGE-TEXT
move STD-JULIAN-DATE to DDF-JULIAN-DATE-2
move STD-DAYS-REMAINING to DDF-DAYS-REMAINING-2
else
move STD-MESSAGE-TEXT to DDF-MESSAGE-TEXT
end-if
exit.
*
*****************************************************************
DATE-DIFF-CALCULATION.
* Calculate difference of years...
subtract DDF-JULIAN-CCYY-1 from DDF-JULIAN-CCYY-2
giving DIFF-OF-YEARS
* Calculate difference of days...
subtract DIFF-OF-DAYS from DIFF-OF-DAYS
if DIFF-OF-YEARS = 0
subtract DDF-JULIAN-DAY-1 from DDF-JULIAN-DAY-2
giving DIFF-OF-DAYS
else
add DDF-DAYS-REMAINING-1 to DIFF-OF-DAYS
add DDF-JULIAN-DAY-2 to DIFF-OF-DAYS
end-if
* Calculate for multiple years ignoring leap years
if DIFF-OF-YEARS > 1
subtract 1 from DIFF-OF-YEARS giving MULTIPLE-YEARS
multiply 365 by MULTIPLE-YEARS giving REGISTER-7-0
add REGISTER-7-0 to DIFF-OF-DAYS
end-if
* Adjust difference of days for leap-year cycle...
if DIFF-OF-YEARS > 1
perform DATE-DIFF-CALCULATION-LEAP
add NUMBER-OF-LEAP-YEARS to DIFF-OF-DAYS
end-if
add DIFF-OF-DAYS to ZERO giving DDF-DIFFERENCE-IN-DAYS
exit.
*
*****************************************************************
DATE-DIFF-CALCULATION-LEAP.
* Calculate years to next leap year...
divide DDF-JULIAN-CCYY-1 by 4 giving MULTIPLE-YEARS
remainder HOLD-REMAINDER-1
* Calculate number of years between primary and secondary...
subtract 1 from DIFF-OF-YEARS giving MULTIPLE-YEARS
add HOLD-REMAINDER-1 to MULTIPLE-YEARS
divide MULTIPLE-YEARS by 4 giving NUMBER-OF-LEAP-YEARS
* Adjust difference of days for 400-year leap-year cycle...
perform DATE-DIFF-CALCULATION-LEAP-400
exit.
*
*****************************************************************
DATE-DIFF-CALCULATION-LEAP-400.
* Calculate years to next leap year 400 exception...
divide DDF-JULIAN-CCYY-1 by 400 giving MULTIPLE-YEARS
remainder HOLD-REMAINDER-2
* Calculate number of years between primary and secondary...
subtract 1 from DIFF-OF-YEARS giving MULTIPLE-YEARS
add HOLD-REMAINDER-2 to MULTIPLE-YEARS
divide MULTIPLE-YEARS by 400 giving REGISTER-7-0
subtract REGISTER-7-0 from NUMBER-OF-LEAP-YEARS
* Adjust difference of days for 4-year leap-year cycle...
exit.
*
*****************************************************************
DATE-FUNCTION-EDIT.
move 'EDITDATE' to STD-REQUEST
move '-' to STD-DATE-EDIT-BYTE
call 'SIMODATE' using STD-SIMODATE
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)
else
display MESSAGE-BUFFER
end-if
move all SPACES to MESSAGE-TEXT
exit.
*****************************************************************
Z-POST-COPYRIGHT.
display SIM-TITLE
display SIM-COPYRIGHT
exit.
*****************************************************************
* This example is provided by SimoTime Technologies *
* Our e-mail address is: helpdesk@simotime.com *
* Also, visit our Web Site at http://www.simotime.com *
*****************************************************************
The Date Validation Routine
The following (SIMODATE.cbl) is the source code listing for the date validation, formatting and conversion routine.
IDENTIFICATION DIVISION.
PROGRAM-ID. SIMODATE.
AUTHOR. SIMOTIME TECHNOLOGIES.
*****************************************************************
* Copyright (C) 1987-2019 SimoTime Technologies. *
* *
* 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 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 *
* Technologies. *
* *
* Permission to use, copy, modify and distribute this software *
* for any commercial purpose requires a fee to be paid to *
* SimoTime Technologies. 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 *
* Technologies. *
* *
* SimoTime Technologies 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 *
* Technologies 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 Technologies *
* 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 Technologies, *
* 15 Carnoustie Drive, Novato, CA 94949-5849. *
* *
*****************************************************************
* This program is provided by SimoTime Technologies *
* Our e-mail address is: helpdesk@simotime.com *
* Also, visit our Web Site at http://www.simotime.com *
* *
*****************************************************************
*
*****************************************************************
* Source Member: SIMODATE.CBL
* Copy Files: PASSDATE.CPY
*****************************************************************
*
* SIMODATE - edits and formats a gregorian date ccyymmdd. It also
* provides additional information such as:
*
* 1. Identify leap year
* 2. Provide a Julian Date
* 3. Provide a text date - for example, January 1, 2001
* 4. Provide days-in-month
* and more...
*
* CALLING PROTOCOL
* ----------------
* call 'SIMODATE' using STD-SIMODATE
*
* 01 STD-SIMODATE.
* 05 STD-REQUEST pic X(8).
* 05 STD-RESPONSE pic 9(4).
* 05 STD-MESSAGE-TEXT pic X(68).
* 05 STD-GREGORIAN-4-EDIT pic X(10).
* 05 STD-EDITED-INFO.
* 10 STD-DEBUG-INFO pic X(8).
* 10 STD-LEAP-YEAR-YN pic X.
* 10 STD-MONTH-VERBAGE pic X(10).
* 10 STD-MM-DAYS pic 99.
* 10 STD-GREGORIAN-DATE pic 9(8).
* 10 STD-JULIAN-DATE pic 9(7).
* 10 STD-JULIAN-VALUE redefines STD-JULIAN-DATE.
* 15 STD-JULIAN-CCYY pic 9(4).
* 15 STD-JULIAN-DAY pic 9(3).
* 10 STD-DAYS-REMAINING pic 9(3).
* 10 STD-DATE-VERBAGE pic X(18).
* 10 STD-DATE-EDIT-BYTE pic X.
* 10 STD-DATE-EDITED pic X(10).
*
*****************************************************************
*
* MAINTENANCE
* -----------
* 1997/02/27 Simmons, Created program.
* 2004/01/26 Simmons, Mike added the check for 4000th year
* increments are not leap years.
*
*****************************************************************
*
DATA DIVISION.
WORKING-STORAGE SECTION.
*
*****************************************************************
* Data-structure for Title and Copyright...
*****************************************************************
01 SIM-TITLE.
05 T1 pic X(11) value '* SIMODATE '.
05 T2 pic X(34) value 'Process a Date Request '.
05 T3 pic X(10) value ' v13.06.19'.
05 T4 pic X(24) value ' http://www.simotime.com'.
01 SIM-COPYRIGHT.
05 C1 pic X(11) value '* SIMODATE '.
05 C2 pic X(20) value 'Copyright 1987-2019 '.
05 C3 pic X(28) value ' SimoTime Technologies '.
05 C4 pic X(20) value ' All Rights Reserved'.
*****************************************************************
01 FIRST-TIME pic X value 'Y'.
01 IX-1 pic 999 value 0.
01 IX-2 pic 999 value 0.
01 WORK-N-7 pic 9(7) value 0.
01 DATE-WORK-ALPHA.
05 DATE-WORK-A-CCYY pic X(4) value SPACES.
05 DATE-WORK-A-MM pic X(2) value SPACES.
05 DATE-WORK-A-DD pic X(2) value SPACES.
01 DATE-WORK-NUMERIC.
05 DATE-WORK-N-CCYY pic 9(4) value 0.
05 DATE-WORK-N-MM pic 9(2) value 0.
05 DATE-WORK-N-DD pic 9(2) value 0.
01 MONTH-TABLE-DATA.
05 filler pic X(10) value 'January '.
05 filler pic X(10) value 'February '.
05 filler pic X(10) value 'March '.
05 filler pic X(10) value 'April '.
05 filler pic X(10) value 'May '.
05 filler pic X(10) value 'June '.
05 filler pic X(10) value 'July '.
05 filler pic X(10) value 'August '.
05 filler pic X(10) value 'September '.
05 filler pic X(10) value 'October '.
05 filler pic X(10) value 'November '.
05 filler pic X(10) value 'December '.
05 filler pic 99 value 31.
05 filler pic 99 value 28.
05 filler pic 99 value 31.
05 filler pic 99 value 30.
05 filler pic 99 value 31.
05 filler pic 99 value 30.
05 filler pic 99 value 31.
05 filler pic 99 value 31.
05 filler pic 99 value 30.
05 filler pic 99 value 31.
05 filler pic 99 value 30.
05 filler pic 99 value 31.
01 MONTH-TABLE redefines MONTH-TABLE-DATA.
05 MONTH-VERBAGE pic X(10) occurs 12 times.
05 MONTH-COUNT-OF-DAYS pic 99 occurs 12 times.
01 JULIAN-DATE.
05 JULIAN-CCYY pic 9(4) value 0.
05 JULIAN-DDD pic 9(3) value 0.
01 DATE-VERBAGE pic X(18) value SPACES.
01 DAY-OF-WEEK-DATA.
05 filler pic X(10) value 'Sunday '.
05 filler pic X(10) value 'Monday '.
05 filler pic X(10) value 'Tuesday '.
05 filler pic X(10) value 'Wednesday '.
05 filler pic X(10) value 'Thursday '.
05 filler pic X(10) value 'Friday '.
05 filler pic X(10) value 'Saturday '.
01 DOW-TABLE redefines DAY-OF-WEEK-DATA.
05 DOW-VERBAGE pic X(10) occurs 7 times.
01 DOW-IDX pic 9 value 0.
*****************************************************************
01 MESSAGE-BUFFER.
05 MESSAGE-HEADER pic X(11) value '* SIMODATE '.
05 MESSAGE-TEXT pic X(68).
01 DIFF-OF-YEARS pic 9(4) value 0.
01 DIFF-OF-DAYS pic 9(7) value 0.
01 DIFF-OF-WEEKS pic 9(7) value 0.
01 MULTIPLE-YEARS pic 9(7) value 0.
01 NUMBER-OF-LEAP-YEARS pic 9(7) value 0.
01 HOLD-REMAINDER-1 pic 9(7) value 0.
01 HOLD-REMAINDER-2 pic 9(7) value 0.
01 REGISTER-7-0 pic 9(7) value 0.
COPY PASSDIFF.
*****************************************************************
LINKAGE SECTION.
COPY PASSDATE.
*****************************************************************
* Mainline processing routine...
*****************************************************************
PROCEDURE DIVISION using STD-SIMODATE.
add 20 to ZERO giving STD-RESPONSE
move SPACES to STD-MESSAGE-TEXT
if FIRST-TIME not = 'N'
if STD-DEBUG-INFO = 'DEBUG '
or STD-DEBUG-INFO = 'TRACE '
perform Z-POST-COPYRIGHT
end-if
move 'N' to FIRST-TIME
end-if
evaluate STD-REQUEST
when 'EDITDATE' perform EDIT-DATE-FUNCTION
when 'EDITGDAT' perform ACTION-GDAT-REQUEST
when OTHER add 16 to ZERO giving RETURN-CODE
move '0016' to STD-RESPONSE
end-evaluate
if STD-RESPONSE = 20
and STD-MESSAGE-TEXT = SPACES
subtract STD-RESPONSE from STD-RESPONSE
end-if
GOBACK.
*****************************************************************
* This routine will accept dates in the following formats
* ccyymmdd
* ccyy/mm/dd
* ccyy-mm-dd
* ccyy.mm.dd
*****************************************************************
ACTION-GDAT-REQUEST.
move SPACES to DATE-WORK-ALPHA
add 1 to ZERO giving IX-2
move STD-GREGORIAN-4-EDIT to DATE-WORK-A-CCYY
if DATE-WORK-A-CCYY not NUMERIC
move 'NOK for Date Value, CCYY not numeric value...'
to MESSAGE-TEXT
perform Z-POST-ABEND
else
add 4 to IX-2
end-if
* --------------------------------------------------------
* Possible non-numeric separator between CCYY and MM
if STD-GREGORIAN-4-EDIT(IX-2:1) not NUMERIC
add 1 to IX-2
end-if
move STD-GREGORIAN-4-EDIT(IX-2:2) to DATE-WORK-A-MM
if DATE-WORK-A-MM not NUMERIC
move DATE-WORK-A-MM(1:1) to DATE-WORK-A-MM(2:1)
move ZERO to DATE-WORK-A-MM(1:1)
add 1 to IX-2
else
add 2 to IX-2
end-if
* --------------------------------------------------------
* Possible non-numeric separator between MM and DD
if STD-GREGORIAN-4-EDIT(IX-2:1) not NUMERIC
add 1 to IX-2
end-if
move STD-GREGORIAN-4-EDIT(IX-2:2) to DATE-WORK-A-DD
if DATE-WORK-A-DD not NUMERIC
move DATE-WORK-A-DD(1:1) to DATE-WORK-A-DD(2:1)
move ZERO to DATE-WORK-A-DD(1:1)
end-if
if DATE-WORK-A-MM not NUMERIC
move 'NOK for Date Value, MM not numeric value...'
to MESSAGE-TEXT
perform Z-POST-ABEND
end-if
if DATE-WORK-A-DD not NUMERIC
move 'NOK for Date Value, DD not numeric value...'
to MESSAGE-TEXT
perform Z-POST-ABEND
end-if
move 'WIP for Date Function...' to MESSAGE-TEXT
perform Z-POST-CONDITIONAL-TRACE
move DATE-WORK-ALPHA to DATE-WORK-NUMERIC
perform FUNCTION-LEAP-YEAR.
perform FUNCTION-FOR-MONTH
perform FUNCTION-FOR-DAY
perform FUNCTION-CREATE-TXT-DATE
perform FUNCTION-CREATE-NBR-DATE
perform FUNCTION-CONVERT-GDATE-2-JDATE
perform FUNCTION-CALCULATE-DAYS-LEFT
perform FUNCTION-DAY-OF-WEEK
* ------------------------------------------------------------
* Determine AOK for Date Message...
move 'AOK for Date Function...' to MESSAGE-TEXT
perform Z-POST-CONDITIONAL-TRACE
exit.
*****************************************************************
*> This routine will accept dates in the following formats
*> ccyymmdd
*> ccyy/mm/dd
*> ccyy-mm-dd
*> ccyy.mm.dd
*****************************************************************
EDIT-DATE-FUNCTION.
move SPACES to DATE-WORK-ALPHA
add 1 to ZERO giving IX-2
move STD-GREGORIAN-4-EDIT to DATE-WORK-A-CCYY
if DATE-WORK-A-CCYY not NUMERIC
move 'NOK for Date Value, CCYY not numeric value...'
to MESSAGE-TEXT
perform Z-POST-ABEND
else
add 4 to IX-2
end-if
*> --------------------------------------------------------
*> Possible non-numeric separator between CCYY and MM
if STD-GREGORIAN-4-EDIT(IX-2:1) not NUMERIC
add 1 to IX-2
end-if
move STD-GREGORIAN-4-EDIT(IX-2:2) to DATE-WORK-A-MM
if DATE-WORK-A-MM not NUMERIC
move DATE-WORK-A-MM(1:1) to DATE-WORK-A-MM(2:1)
move ZERO to DATE-WORK-A-MM(1:1)
add 1 to IX-2
else
add 2 to IX-2
end-if
*> --------------------------------------------------------
*> Possible non-numeric separator between MM and DD
if STD-GREGORIAN-4-EDIT(IX-2:1) not NUMERIC
add 1 to IX-2
end-if
move STD-GREGORIAN-4-EDIT(IX-2:2) to DATE-WORK-A-DD
if DATE-WORK-A-DD not NUMERIC
move DATE-WORK-A-DD(1:1) to DATE-WORK-A-DD(2:1)
move ZERO to DATE-WORK-A-DD(1:1)
end-if
if DATE-WORK-A-MM not NUMERIC
move 'NOK for Date Value, MM not numeric value...'
to MESSAGE-TEXT
perform Z-POST-ABEND
end-if
if DATE-WORK-A-DD not NUMERIC
move 'NOK for Date Value, DD not numeric value...'
to MESSAGE-TEXT
perform Z-POST-ABEND
end-if
move 'WIP for Date Function...' to MESSAGE-TEXT
perform Z-POST-CONDITIONAL-TRACE
move DATE-WORK-ALPHA to DATE-WORK-NUMERIC
* ------------------------------------------------------------
* Determine if a leap year, it is not true that every fourth
* year is a leap year.
*
* if CCYY is divisible by 4 it is a leap year
* except
* if divisible by 100 then it is not a leap year
* except
* if divisible by 400 then it is a leap year
* except
* if divisible by 4000 then it is not a leap year.
*
* 1600,2000, etc... are leap years
* 1700,1800,1900 are not leap years
* 4000,8000,etc... are not leap years
*
* In other words the 100th year increments are not leap
* years with the exception that every 400th year increment
* is a leap year except every 4000th year is not a leap year.
*
move 'N' to STD-LEAP-YEAR-YN
add 28 to ZERO giving MONTH-COUNT-OF-DAYS(2)
move 'WIP for Date, not a Leap Year...' to MESSAGE-TEXT
divide DATE-WORK-N-CCYY by 4 giving WORK-N-7
multiply 4 by WORK-N-7
if WORK-N-7 = DATE-WORK-N-CCYY
divide DATE-WORK-N-CCYY by 100 giving WORK-N-7
multiply 100 by WORK-N-7
if WORK-N-7 = DATE-WORK-N-CCYY
divide DATE-WORK-N-CCYY by 400 giving WORK-N-7
multiply 400 by WORK-N-7
if WORK-N-7 = DATE-WORK-N-CCYY
divide DATE-WORK-N-CCYY by 4000 giving WORK-N-7
multiply 4000 by WORK-N-7
if WORK-N-7 not = DATE-WORK-N-CCYY
move 'Y' to STD-LEAP-YEAR-YN
end-if
end-if
else
move 'Y' to STD-LEAP-YEAR-YN
end-if
if STD-LEAP-YEAR-YN = 'Y'
move 'Y' to STD-LEAP-YEAR-YN
add 29 to ZERO giving MONTH-COUNT-OF-DAYS(2)
move 'WIP for Date, it is a Leap Year...'
to MESSAGE-TEXT
end-if
end-if
perform Z-POST-CONDITIONAL-TRACE
*> ------------------------------------------------------------
*> Test for a valid month...
if DATE-WORK-N-MM > 0
and DATE-WORK-N-MM < 13
move 'WIP for Date, month is ?????????' to MESSAGE-TEXT
move MONTH-VERBAGE(DATE-WORK-N-MM)
to MESSAGE-TEXT(24:10)
perform Z-POST-CONDITIONAL-TRACE
move MONTH-VERBAGE(DATE-WORK-N-MM)
to MESSAGE-TEXT(24:10)
move MONTH-VERBAGE(DATE-WORK-N-MM) to STD-MONTH-VERBAGE
else
move 'NOK for Date Value, MM not 1 through 12...'
to MESSAGE-TEXT
perform Z-POST-ABEND
end-if
*> ------------------------------------------------------------
*> Test for a valid day...
if DATE-WORK-N-DD > 0
and DATE-WORK-N-DD < MONTH-COUNT-OF-DAYS(DATE-WORK-N-MM) + 1
move 'WIP for Date, month has ?? days' to MESSAGE-TEXT
move MONTH-COUNT-OF-DAYS(DATE-WORK-N-MM)
to MESSAGE-TEXT(25:2)
perform Z-POST-CONDITIONAL-TRACE
else
move 'NOK for Day Value, DD not within month range...'
to MESSAGE-TEXT
perform Z-POST-ABEND
end-if
move MONTH-COUNT-OF-DAYS(DATE-WORK-N-MM)
to STD-MM-DAYS
*> ------------------------------------------------------------
*> Create text version of the date. This is a sixteen character
*> field (DATE-VERBAGE) that is left-justified in the following
*> format... month dd, ccyy
move 'WIP for Date, ' to MESSAGE-TEXT
move MONTH-VERBAGE(DATE-WORK-N-MM) to DATE-VERBAGE
subtract IX-2 from IX-2
inspect DATE-VERBAGE tallying IX-2
for CHARACTERS before SPACE
add 2 to IX-2
if DATE-WORK-A-DD(1:1) = '0'
move DATE-WORK-A-DD(2:1) to DATE-VERBAGE(IX-2:1)
add 1 to IX-2
else
move DATE-WORK-A-DD to DATE-VERBAGE(IX-2:2)
add 2 to IX-2
end-if
move ', ' to DATE-VERBAGE(IX-2:2)
add 2 to IX-2
move DATE-WORK-N-CCYY to DATE-VERBAGE(IX-2:4)
move DATE-VERBAGE to MESSAGE-TEXT(15:18)
perform Z-POST-CONDITIONAL-TRACE
move DATE-VERBAGE to STD-DATE-VERBAGE
*> ------------------------------------------------------------
*> Create numeric date for display or print...
move DATE-WORK-A-CCYY to STD-DATE-EDITED
move STD-DATE-EDIT-BYTE to STD-DATE-EDITED(5:1)
move DATE-WORK-A-MM to STD-DATE-EDITED(6:2)
move STD-DATE-EDIT-BYTE to STD-DATE-EDITED(8:1)
move DATE-WORK-A-DD to STD-DATE-EDITED(9:2)
move DATE-WORK-NUMERIC to STD-GREGORIAN-DATE
*> ------------------------------------------------------------
*> Determine Julian Date...
move 'WIP for Date, Julian is CCYYDDD' to MESSAGE-TEXT
move DATE-WORK-N-CCYY to JULIAN-CCYY
add DATE-WORK-N-DD to ZERO giving JULIAN-DDD
add 1 to ZERO giving IX-2
perform until IX-2 = DATE-WORK-N-MM
or IX-2 > 12
add MONTH-COUNT-OF-DAYS(IX-2) to JULIAN-DDD
add 1 to IX-2
end-perform
move JULIAN-DATE to MESSAGE-TEXT(25:7)
perform Z-POST-CONDITIONAL-TRACE
move JULIAN-DATE to STD-JULIAN-DATE
*> ------------------------------------------------------------
*> Calculate remaining days in the year...
if STD-LEAP-YEAR-YN = 'Y'
subtract STD-JULIAN-DAY from 366
giving STD-DAYS-REMAINING
else
subtract STD-JULIAN-DAY from 365
giving STD-DAYS-REMAINING
end-if
*> ------------------------------------------------------------
*> Determine AOK for Date Message...
move 'AOK for Date Function...' to MESSAGE-TEXT
perform Z-POST-CONDITIONAL-TRACE
exit.
*****************************************************************
FUNCTION-CREATE-TXT-DATE.
* ------------------------------------------------------------
* Create text version of the date. This is a sixteen character
* field (DATE-VERBAGE) that is left-justified in the following
* format... month dd, ccyy
move 'WIP for Date, ' to MESSAGE-TEXT
move MONTH-VERBAGE(DATE-WORK-N-MM) to DATE-VERBAGE
subtract IX-2 from IX-2
inspect DATE-VERBAGE tallying IX-2
for CHARACTERS before SPACE
add 2 to IX-2
if DATE-WORK-A-DD(1:1) = '0'
move DATE-WORK-A-DD(2:1) to DATE-VERBAGE(IX-2:1)
add 1 to IX-2
else
move DATE-WORK-A-DD to DATE-VERBAGE(IX-2:2)
add 2 to IX-2
end-if
move ', ' to DATE-VERBAGE(IX-2:2)
add 2 to IX-2
move DATE-WORK-N-CCYY to DATE-VERBAGE(IX-2:4)
move DATE-VERBAGE to MESSAGE-TEXT(15:18)
perform Z-POST-CONDITIONAL-TRACE
move DATE-VERBAGE to STD-DATE-VERBAGE
exit.
*****************************************************************
FUNCTION-DAY-OF-WEEK.
* Determine the Day of a week as a number and text.
* ----------------------------------------------------------- *
move ZERO to STD-DAY-OF-WEEK-NBR
move 'Unknown ' to STD-DAY-OF-WEEK-TXT
add 1600001 to ZERO giving DDF-JULIAN-DATE-1
move STD-JULIAN-DATE to DDF-JULIAN-DATE-2
perform FUNCTION-DATE-DIFFERENCE
divide DDF-DIFFERENCE-IN-DAYS by 7
giving DIFF-OF-WEEKS remainder DOW-IDX
evaluate DOW-IDX
when 0 add 6 to ZERO giving STD-DAY-OF-WEEK-NBR
when 1 add 7 to ZERO giving STD-DAY-OF-WEEK-NBR
when 2 add 1 to ZERO giving STD-DAY-OF-WEEK-NBR
when 3 add 2 to ZERO giving STD-DAY-OF-WEEK-NBR
when 4 add 3 to ZERO giving STD-DAY-OF-WEEK-NBR
when 5 add 4 to ZERO giving STD-DAY-OF-WEEK-NBR
when 6 add 5 to ZERO giving STD-DAY-OF-WEEK-NBR
end-evaluate
if STD-DAY-OF-WEEK-NBR > 0
and STD-DAY-OF-WEEK-NBR < 8
move DOW-VERBAGE(STD-DAY-OF-WEEK-NBR)
to STD-DAY-OF-WEEK-TXT
else
move ZERO to STD-DAY-OF-WEEK-NBR
move 'Unknown ' to STD-DAY-OF-WEEK-TXT
end-if
exit.
*****************************************************************
FUNCTION-LEAP-YEAR.
* ----------------------------------------------------------- *
* Determine if a leap year, it is not true that every fourth
* year is a leap year.
*
* if CCYY is divisible by 4 it is a leap year
* except
* if divisible by 100 then it is not a leap year
* except
* if divisible by 400 then it is a leap year
* except
* if divisible by 4000 then it is not a leap year.
*
* 1600,2000, etc... are leap years
* 1700,1800,1900 are not leap years
* 4000,8000,etc... are not leap years
*
* In other words the 100th year increments are not leap
* years with the exception that every 400th year increment
* is a leap year except every 4000th year is not a leap year.
*
move 'N' to STD-LEAP-YEAR-YN
add 28 to ZERO giving MONTH-COUNT-OF-DAYS(2)
move 'WIP for Date, not a Leap Year...' to MESSAGE-TEXT
divide DATE-WORK-N-CCYY by 4 giving WORK-N-7
multiply 4 by WORK-N-7
if WORK-N-7 = DATE-WORK-N-CCYY
divide DATE-WORK-N-CCYY by 100 giving WORK-N-7
multiply 100 by WORK-N-7
if WORK-N-7 = DATE-WORK-N-CCYY
divide DATE-WORK-N-CCYY by 400 giving WORK-N-7
multiply 400 by WORK-N-7
if WORK-N-7 = DATE-WORK-N-CCYY
divide DATE-WORK-N-CCYY by 4000 giving WORK-N-7
multiply 4000 by WORK-N-7
if WORK-N-7 not = DATE-WORK-N-CCYY
move 'Y' to STD-LEAP-YEAR-YN
end-if
end-if
else
move 'Y' to STD-LEAP-YEAR-YN
end-if
if STD-LEAP-YEAR-YN = 'Y'
move 'Y' to STD-LEAP-YEAR-YN
add 29 to ZERO giving MONTH-COUNT-OF-DAYS(2)
move 'WIP for Date, it is a Leap Year...'
to MESSAGE-TEXT
end-if
end-if
perform Z-POST-CONDITIONAL-TRACE
exit.
*****************************************************************
FUNCTION-FOR-MONTH.
* ------------------------------------------------------------
* Test for a valid month...
if DATE-WORK-N-MM > 0
and DATE-WORK-N-MM < 13
move 'WIP for Date, month is ?????????' to MESSAGE-TEXT
move MONTH-VERBAGE(DATE-WORK-N-MM)
to MESSAGE-TEXT(24:10)
perform Z-POST-CONDITIONAL-TRACE
move MONTH-VERBAGE(DATE-WORK-N-MM)
to MESSAGE-TEXT(24:10)
move MONTH-VERBAGE(DATE-WORK-N-MM) to STD-MONTH-VERBAGE
else
move 'NOK for Date Value, MM not 1 through 12...'
to MESSAGE-TEXT
perform Z-POST-ABEND
end-if
exit.
*****************************************************************
FUNCTION-FOR-DAY.
* ------------------------------------------------------------
* Test for a valid day...
if DATE-WORK-N-DD > 0
and DATE-WORK-N-DD < MONTH-COUNT-OF-DAYS(DATE-WORK-N-MM) + 1
move 'WIP for Date, month has ?? days' to MESSAGE-TEXT
move MONTH-COUNT-OF-DAYS(DATE-WORK-N-MM)
to MESSAGE-TEXT(25:2)
perform Z-POST-CONDITIONAL-TRACE
else
move 'NOK for Day Value, DD not within month range...'
to MESSAGE-TEXT
perform Z-POST-ABEND
end-if
move MONTH-COUNT-OF-DAYS(DATE-WORK-N-MM)
to STD-MM-DAYS
exit.
*****************************************************************
FUNCTION-CREATE-NBR-DATE.
* ------------------------------------------------------------
* Create numeric date for display or print...
move DATE-WORK-A-CCYY to STD-DATE-EDITED
move STD-DATE-EDIT-BYTE to STD-DATE-EDITED(5:1)
move DATE-WORK-A-MM to STD-DATE-EDITED(6:2)
move STD-DATE-EDIT-BYTE to STD-DATE-EDITED(8:1)
move DATE-WORK-A-DD to STD-DATE-EDITED(9:2)
move DATE-WORK-NUMERIC to STD-GREGORIAN-DATE
exit.
*****************************************************************
FUNCTION-CONVERT-GDATE-2-JDATE.
* ------------------------------------------------------------
* Determine Julian Date...
move 'WIP for Date, Julian is CCYYDDD' to MESSAGE-TEXT
move DATE-WORK-N-CCYY to JULIAN-CCYY
add DATE-WORK-N-DD to ZERO giving JULIAN-DDD
add 1 to ZERO giving IX-2
perform until IX-2 = DATE-WORK-N-MM
or IX-2 > 12
add MONTH-COUNT-OF-DAYS(IX-2) to JULIAN-DDD
add 1 to IX-2
end-perform
move JULIAN-DATE to MESSAGE-TEXT(25:7)
perform Z-POST-CONDITIONAL-TRACE
move JULIAN-DATE to STD-JULIAN-DATE
exit.
*****************************************************************
FUNCTION-CALCULATE-DAYS-LEFT.
* ------------------------------------------------------------
* Calculate remaining days in the year...
if STD-LEAP-YEAR-YN = 'Y'
subtract STD-JULIAN-DAY from 366
giving STD-DAYS-REMAINING
else
subtract STD-JULIAN-DAY from 365
giving STD-DAYS-REMAINING
end-if
exit.
*****************************************************************
FUNCTION-DATE-DIFFERENCE.
* Calculate difference of years...
subtract DDF-JULIAN-CCYY-1 from DDF-JULIAN-CCYY-2
giving DIFF-OF-YEARS
* Calculate difference of days...
subtract DIFF-OF-DAYS from DIFF-OF-DAYS
if DIFF-OF-YEARS = 0
subtract DDF-JULIAN-DAY-1 from DDF-JULIAN-DAY-2
giving DIFF-OF-DAYS
else
add DDF-DAYS-REMAINING-1 to DIFF-OF-DAYS
add DDF-JULIAN-DAY-2 to DIFF-OF-DAYS
end-if
* Calculate for multiple years ignoring leap years
if DIFF-OF-YEARS > 1
subtract 1 from DIFF-OF-YEARS giving MULTIPLE-YEARS
multiply 365 by MULTIPLE-YEARS giving REGISTER-7-0
add REGISTER-7-0 to DIFF-OF-DAYS
end-if
* Adjust difference of days for leap-year cycle...
if DIFF-OF-YEARS > 1
perform FUNCTION-DATE-DIFF-LEAP
add NUMBER-OF-LEAP-YEARS to DIFF-OF-DAYS
end-if
add DIFF-OF-DAYS to ZERO giving DDF-DIFFERENCE-IN-DAYS
exit.
*****************************************************************
FUNCTION-DATE-DIFF-LEAP.
* Calculate years to next leap year...
divide DDF-JULIAN-CCYY-1 by 4 giving MULTIPLE-YEARS
remainder HOLD-REMAINDER-1
* Calculate number of years between primary and secondary...
subtract 1 from DIFF-OF-YEARS giving MULTIPLE-YEARS
add HOLD-REMAINDER-1 to MULTIPLE-YEARS
divide MULTIPLE-YEARS by 4 giving NUMBER-OF-LEAP-YEARS
* Adjust difference of days for 400-year leap-year cycle...
perform FUNCTION-DATE-DIFF-LEAP-400
exit.
*****************************************************************
FUNCTION-DATE-DIFF-LEAP-400.
* Calculate years to next leap year 400 exception...
divide DDF-JULIAN-CCYY-1 by 400 giving MULTIPLE-YEARS
remainder HOLD-REMAINDER-2
* Calculate number of years between primary and secondary...
subtract 1 from DIFF-OF-YEARS giving MULTIPLE-YEARS
add HOLD-REMAINDER-2 to MULTIPLE-YEARS
divide MULTIPLE-YEARS by 400 giving REGISTER-7-0
subtract REGISTER-7-0 from NUMBER-OF-LEAP-YEARS
* Adjust difference of days for 4-year leap-year cycle...
exit.
*****************************************************************
* Display Copyright or Program Message...
* ------------------------------------------------------------
Z-POST-ABEND.
if MESSAGE-TEXT not = SPACES
move MESSAGE-TEXT to STD-MESSAGE-TEXT
perform Z-POST-MESSAGE
end-if
move 'Program is ABENDING...' to MESSAGE-TEXT
perform Z-POST-MESSAGE
perform Z-POST-CONSOLE
add 16 to ZERO giving STD-RESPONSE
GOBACK.
Z-POST-COPYRIGHT.
display SIM-TITLE upon console
display SIM-COPYRIGHT upon console
exit.
Z-POST-CONSOLE.
display MESSAGE-BUFFER upon console
exit.
Z-POST-MESSAGE.
display MESSAGE-BUFFER upon console
move SPACES to MESSAGE-TEXT
exit.
Z-POST-CONDITIONAL-TRACE.
if STD-DEBUG-INFO = 'DEBUG '
or STD-DEBUG-INFO = 'TRACE '
display MESSAGE-BUFFER upon console
end-if
move SPACES to MESSAGE-TEXT
exit.
*****************************************************************
* This example is provided by SimoTime Technologies *
* Our e-mail address is: helpdesk@simotime.com *
* Also, visit our Web Site at http://www.simotime.com *
*****************************************************************
Summary
This suite of programs provides an example of a techniques that may be used to calculate the number-of-days difference between two Gregorian dates in the ccyymmdd format. This document may be used to assist as a tutorial for new programmers or as a quick reference for experienced programmers.
In the world of programming there are many ways to solve a problem. This documentation and software were developed and tested on systems that are configured for a SIMOTIME environment based on the hardware, operating systems, user requirements and security requirements. Therefore, adjustments may be needed to execute the jobs and programs when transferred to a system of a different architecture or configuration.
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