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#19392 - 2002-04-03 01:57 PM help with date calculation
Anonymous
Unregistered


Hi all

I have a fully working script that transfers orders onto a FTP server ad then renames the files to an archive extension. ~I am trying to implement a bit of house keeping so we only keep files form the last 7 days, but am getting a bit stuck on what is wrong with my script. first of all I check if it is a leap year withthe following code
code:
  
If $month>02
If Val($y)=(Val($y)/400)*400 OR Val($y)=(Val($y)/4)*4 AND Val($y)<>(Val($y)/100)*100
Val($day)=Val($day)+1
$leap="yes"
EndIf
EndIf

And this works fine, but if it is not a leap year I need to calculate if last year was as this may also throw out the calculations. I have this code below

code:
 
If $leap="no"
$LAST_YEAR=VAL($year)-1
?"LAST_YEAR="$LAST_YEAR

If Val($LAST_YEAR)=(Val($LAST_YEAR)/400)*400 OR VAL($LAST_YEAR)=(Val($LAST_YEAR)/4)*4 AND VAL($LAST_YEAR)<>(Val($LAST_YEAR)/100)*100
;Val($day)=Val($day)+1
$prev_leap="yes"
EndIf
EndIf

However the script keeps crashing at this part of it. I know how to do all the calculations but this part is really bugging me. I'm not sure but I think it may be to do with the val conversions somewhere.

any suggestions??

P.S the day / month /year variants are calculated from the @day macro and are working fine

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#19393 - 2002-04-03 02:10 PM Re: help with date calculation
Richard H. Administrator Offline
Administrator
*****

Registered: 2000-01-24
Posts: 4945
Loc: Leatherhead, Surrey, UK
If you simply want the date 7 days ago, search the forums for the date math calculation routines. These'll save you sooo much aggravation.

Using these routines simply convert the date into an serial format, subtract 7 then convert it back to date format.

They are available from the ScriptLogic site and the UDF forum.

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#19394 - 2002-04-03 02:11 PM Re: help with date calculation
Lonkero Administrator Offline
KiX Master Guru
*****

Registered: 2001-06-05
Posts: 22343
Loc: OK
not sure...
at least you could get the last section shorter:
code:
If $leap="no"
$LAST_YEAR=VAL($year)-1
?"LAST_YEAR="$LAST_YEAR
If Val($LAST_YEAR)=(Val($LAST_YEAR)/400)*400 OR VAL($LAST_YEAR)=(Val($LAST_YEAR)/4)*4 AND VAL($LAST_YEAR)<>(Val($LAST_YEAR)/100)*100
;Val($day)=Val($day)+1
$prev_leap="yes"
EndIf
EndIf

is just the same as:
code:
If $leap="no"
$LAST_YEAR=VAL($year)-1
?"LAST_YEAR="$LAST_YEAR
If VAL($LAST_YEAR)=(Val($LAST_YEAR)/4)*4 AND VAL($LAST_YEAR)<>(Val($LAST_YEAR)/100)*100
;Val($day)=Val($day)+1
$prev_leap="yes"
EndIf
EndIf



[ 03 April 2002, 14:12: Message edited by: Lonkero ]
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#19395 - 2002-04-03 02:32 PM Re: help with date calculation
Anonymous
Unregistered


Yes, the functions you want are located here:

http://www.scriptlogic.com/Kixtart/FunctionList.asp?FT=Date%20Functions

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#19396 - 2002-04-03 04:01 PM Re: help with date calculation
Anonymous
Unregistered


Sorry guys, forgot ot mention I am using verison 3.63 of Kix that doesn't support the UDFs, and I can't upgrade it without going through loads of red tape. All I wanted to know really is if I have too many 'val's in there, it seems funny that the first part of code works fine, but the second doesn't even though it is identical except for the variant
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#19397 - 2002-04-03 04:11 PM Re: help with date calculation
Lonkero Administrator Offline
KiX Master Guru
*****

Registered: 2001-06-05
Posts: 22343
Loc: OK
I can't understand how it could be the reason.
maybe I try this later, but I quess the thing is somewhere else...

what it says when it crashes?
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#19398 - 2002-04-03 04:14 PM Re: help with date calculation
Shawn Administrator Offline
Administrator
*****

Registered: 1999-08-13
Posts: 8611
Since you already do the numeric conversion of $LAST_YEAR, eg:

$LAST_YEAR=VAL($year)-1

might thee not be the need to repeatedly do it going forward, eg, maybe change your conditional to this:

If $LAST_YEAR=($LAST_YEAR/400)*400 OR $LAST_YEAR=($LAST_YEAR/4)*4 AND $LAST_YEAR<>($LAST_YEAR/100)*100

-Shawn

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#19399 - 2002-04-03 04:56 PM Re: help with date calculation
Richard H. Administrator Offline
Administrator
*****

Registered: 2000-01-24
Posts: 4945
Loc: Leatherhead, Surrey, UK
The original routines were written for 3.63:
Get yer date maths routines here.

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#19400 - 2002-04-03 05:30 PM Re: help with date calculation
Richard H. Administrator Offline
Administrator
*****

Registered: 2000-01-24
Posts: 4945
Loc: Leatherhead, Surrey, UK
This sample is as simple as I can make it, and will work fine with 3.63

1) Set the three date fields $iDay, $iMonth and $iYear.
2) Set $iChange to the number of days to change the date by - negative numbers go back in time.
3) Call the DateMath subroutine.

Now the $iDay, $iMonth and $iYear variables have been adjusted by $iChange.

Here is the code with the example:

code:
$iMonth=3
$iDay=4
$iYear=2002
$iChange=-7

"Date was (DD MM YYYY) $iDay $iMonth $iYear" ?
Gosub DateMath
"Date is now (DD MM YYYY) $iDay $iMonth $iYear" ?
Exit
;
;
; -------------------
; DateMath Subroutine
; -------------------
:DateMath
If $iMonth < 3 $iMonth = $iMonth + 12
$iYear = $iYear - 1
EndIf
$iSerial = $iDay + ( 153 * $iMonth - 457 ) / 5 + 365 * $iYear + $iYear / 4 - $iYear / 100 + $iYear / 400 + $iChange
$MyH=100*$iSerial-25
$MyA=$MyH/3652425
$MyB=$MyA-$MyA/4
$iYear=(100*$MyB+$MyH)/36525
$MyC=$MyB+$iSerial-365*$iYear-$iYear/4
$iMonth=(5*$MyC+456)/153
$iDay=$MyC-(153*$iMonth-457)/5
If $iMonth > 12
$iYear=$iYear + 1
$iMonth = $iMonth - 12
EndIf
Return



[ 03 April 2002, 17:32: Message edited by: Richard Howarth ]

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#19401 - 2002-04-04 12:21 AM Re: help with date calculation
BrianTX Offline
Korg Regular

Registered: 2002-04-01
Posts: 895
If it were me, I would have the script shell to a program from microsoft called "forfiles.exe". This allows you to do operations on a file based on date and filename with wildcards. That way you all you need is a formatted date rather than a calculation of the last 7 days. Here is the file output with no command-line options:

FORFILES v 1.1 - emmanubo@microsoft.com - 4/98

Syntax : FORFILES [-pPath] [-mSearch Mask] [-ccommand] [-d<+|->] [-s]

-pPath Path where to start searching
-mSearch Mask Search files according to
-cCommand Command to execute on each file(s)
-d<+|-> Select files with date >= or <=DDMMYYYY
or files having date >= or <= current date - DD days
-s Recurse directories
-v Verbose mode

The following variables can be used in Command :
@FILE, @FNAME_WITHOUT_EXT, @EXT, @PATH, @RELPATH, @ISDIR, @FSIZE, @FDATE,
@FTIME

To include special hexa characters in the command line : use 0xHH
.... etc....

It can be found at:
ftp://ftp.microsoft.com/reskit/y2kfix/x86/

BrianTX

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