SimoDATE - The COBOL Source Code
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Date Validate and Format SimoDATE - The COBOL Source Code |
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Introduction
This document provides a listing of the COBOL source code for the callable routine SIMODATE. Additional information about this program may be obtained by sending an e-mail to: helpdesk@simotime.com
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 © 1987-2024
SimoTime Technologies and Services
All Rights Reserved
SimoDATE, What It Does
The SimoDATE routine (or callable program) will validate, edit and convert a given date in the ccyymmdd format into various other formats. For example, if the date of 20000401 (or April 1, 2000) is passed to the SimoDATE routine the following will be returned in the pass area.
Gregorian Date .............. 20000401 Edited Gregorian Date ....... 2000-04-01 Text for the Date............ April 1, 2000 Julian Date ................. 2000092 Days remaining in the year .. 274 Leap Year Flag (Y or N) ..... Y Days in the Month ........... 30 Text for the Month .......... April
SimoDATE, How To Use
The following will validate, edit and convert the date of April 4, 2000.
MOVE X'EDITDATE' to STD-REQUEST
MOVE '20000401' to STD-GREGORIAN-4-EDIT
CALL 'SIMODATE' using STD-SIMODATE
A copy file is provided to define the pass area to be used when calling SimoDATE. The following statement is required in the WORKING STORAGE section of the calling program.
WORKING STORAGE.
. . .
. . .
COPY PASSDATE.
. . .
Note: The copy file is defined in a later section of this document.
The COBOL Source Code
The following (SIMODATE.cbl) is the COBOL Source Code for the SIMODATE callable 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 Unpublished, all rights reserved under *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 *
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* 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 *
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* 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 *
*****************************************************************
The COBOL Copy File
The following (PASSBITS.cpy) is the COBOL copy file that may be used when calling SimoDATE.
*****************************************************************
* Data Structure or Pass Area used for calling SIMODATE. *
*****************************************************************
* Copyright (C) 1987-2019 SimoTime Technologies *
* All Rights Reserved *
*****************************************************************
* Provided by SimoTime Technologies *
* Our e-mail address is: helpdesk@simotime.com *
* Also, visit our Web Site at http://www.simotime.com *
*****************************************************************
* STD-REQUEST - This is an eight character data string
* and should contain the following in
* upper case.
* EDITDATE, This keyword causes the date
* routine (SIMODATE) to validate the date
* and provide an edited text string plus
* a julian date and more.
* EDITJDAT, WIP
* The calling program must provide the
* above as a request. Otherwise, a non-
* zero return code will be set in the
* following result field. This data string
* is not changed by the date routine.
*
* STD-RESPONSE - This is a four byte binary data string
* and is used by the conversion routine to
* pass a return code. If the date request
* is successful the value in this data
* string will be zero.
*
* STD-MESSAGE-TEXT - If a non-zero response occurs this field
* will contain a short message.
*
* STD-GREGORIAN-4-EDIT - This is the input date field in
* gregorian format that will be validated.
* If the gregorian date does not pass the
* editing process a message will be posted
* in the STD-MESSAGE-TEXT field and a
* non-zero value of 16 will be placed in
* the STD-RESPONSE field. SimoDATE is
* somewhat flexible in accepting and
* reformatting a gregorian date. For
* example, the following are acceptable
* and will be reformatted into the
* STD-GREGORIAN-4-EDIT field.
* ccyymmdd This is the preferred format.
* ccyy-mm-dd Special characters may be
* used as separators.
* ccyy-m-d Single digit month and day
* values are acceptable when
* delimiter are used.
* ccyy/m/dd A mixing of single digit
* usage is accepted.
*
* STD-DEBUG-INFO - This data string provides additional
* debugging capability. This may be
* helpful if changes are made to the date
* routine.
*
* STD-LEAP-YEAR-YN - This field is used to identify a leap
* year. A "Y" indicates the input date is
* a leap year. An "N" indicates the input
* year is not a leap year.
*
* STD-MONTH-VERBAGE - This field is used for the text of the
* input month. For example, 1=January,
* 2=February, etc.
*
* STD-MM-DAYS - This field is used for the number of
* days in the input month.
*
* STD-GREGORIAN-DATE - This field is used for the gregorian
* date in ccyymmdd format (all numeric
* values).
*
* STD-JULIAN-DATE - This field is used for the julian date
* in ccyyddd format.
*
* STD-DAYS-REMAINING - The number of days remaining in the
* year.
*
* STD-DATE-VERBAGE - This field is used for the date in text
* format. For example, 19991225 will
* produce a text string of
* December 25, 1999.
*
* STD-DATE-EDIT-BYTE - This field contains the character that
* will be used to edit and format the
* gregorian date. For example, this field
* may contain a space, a dash, a slash,
* etc... and will be used as the delimiter
* between the year, month and day.
*
* STD-DATE-EDITED - This field if for the edited date using
* the delimiter character from the
* preceding field. For example, 19991225
* will produce 1999/12/25 if the delimiter
* character is a slash.
* STD-DAY-OF-WEEK - WIP, 1-7 is Sunday through Saturday.
*****************************************************************
*
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-14.
15 STD-DATE-DAY pic X(3).
15 STD-DATE-DAY-2 pic X.
15 STD-DATE-EDITED pic X(10).
05 STD-DAY-OF-WEEK.
10 STD-DAY-OF-WEEK-NBR pic 9.
10 STD-DAY-OF-WEEK-TXT pic X(10).
*** PASSDATE - End-of-Copy File - - - - - - - - - - - PASSDATE *
*****************************************************************
*
Summary
This document provides a listing of the COBOL source code for the callable routine SIMODATE. This document may be used 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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SimoTime Technologies 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 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, documentation or training material.
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Current Server or Internet Access
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Note: The latest versions of the SimoTime Documents and Program Suites are available on the Internet and may be accessed using the 
icon. If a user has a SimoTime Enterprise License the Documents and Program Suites may be available on a local server and accessed using the 
icon.
Explore How to Determine the Difference in Two Dates with the difference being calcualted in days.
Explore the COBOL Connection for more examples of COBOL programming techniques and sample code.
Explore The ASCII and EBCDIC Translation Tables. These tables are provided for individuals that need to better understand the bit structures and differences of the encoding formats.
Explore The File Status Return Codes that are used to interpret the results of accessing VSAM data sets and/or QSAM files.
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Glossary of Terms
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