#188729 - 2008-07-14 02:18 PM
Logical OR and "1" vs "-1"
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lho
Fresh Scripter
Registered: 2008-07-14
Posts: 5
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Hi.
The following makes me mad:
Using OR to check for "0" or "-1" does not work, if the result is "-1".
So, if the file "%appdata%\PATH\file1.rtf" is newer than file @LDrive +"\resources\file1.rtf", the Result is "-1" but for KIX it does not matter and it goes into the THEN tree. But if the result was "1", it works as it should.
$RESULT = COMPAREFILETIMES (@LDrive +"\resources\file1.rtf","%appdata%\PATH\file1.rtf")
MESSAGEBOX ("Result=: $RESULT", "Box", 4160)
IF $RESULT = "0" OR $RESULT = "-1"
MESSAGEBOX ("Now we are at THEN", "Box", 4160)
ELSE GOTO SKIP
ENDIF
goto END
:SKIP
MESSAGEBOX ("Now we are at ELSE", "Box", 4160)
:END
exit
Edited by lho (2008-07-15 11:17 AM)
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#188730 - 2008-07-14 02:32 PM
Re: Logical OR and "1" vs "-1"
[Re: lho]
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Richard H.
Administrator
Registered: 2000-01-24
Posts: 4946
Loc: Leatherhead, Surrey, UK
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It works fine, try this:
For Each $RESULT in Split("-1 0 1")
$RESULT=CInt($RESULT)
If $RESULT=0 OR $RESULT=(-1)
$=MessageBox("In THEN when RESULT="+$RESULT,"Box",4160)
Else
$=MessageBox("In ELSE when RESULT="+$RESULT,"Box",4160)
EndIf
Next
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#188732 - 2008-07-14 03:02 PM
Re: Logical OR and "1" vs "-1"
[Re: Richard H.]
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lho
Fresh Scripter
Registered: 2008-07-14
Posts: 5
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Hi.
Thanks for the quick reply!
But this example does not work. Here it goes into THEN twice and also runs ELSE once.
I wonder, why the original KIX example for Comparefiletimes
uses almost the same code than I did.
$Result = CompareFileTimes(@LDRIVE + "\USER.INI", "C:\WINDOWS\USER.INI")
IF $Result = 1 OR $Result = -3
COPY @LDRIVE + "\USER.INI" "C:\WINDOWS\USER.INI"
ENDIF
Edited by lho (2008-07-14 03:04 PM)
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#188755 - 2008-07-15 10:28 AM
Re: Logical OR and "1" vs "-1"
[Re: Allen]
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lho
Fresh Scripter
Registered: 2008-07-14
Posts: 5
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I use 4.6.
If i use this example, it acts like described above. No matter what value the variable $RESULT has.
e.g. if I set it to "sdgsgrysdgd": 2* THEN, 1*ELSE
This is, what I'm exactly using:
$RESULT = sdgsgrysdgd
MESSAGEBOX ("Result=: $RESULT", "Box", 4160)
For Each $RESULT in Split("-1 0 1")
$RESULT=CInt($RESULT)
If $RESULT=0 OR $RESULT=(-1)
MessageBox("In THEN when RESULT="+$RESULT,"Box",4160)
Else
MessageBox("In ELSE when RESULT="+$RESULT,"Box",4160)
EndIf
Next
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#188756 - 2008-07-15 11:16 AM
Re: Logical OR and "1" vs "-1"
[Re: lho]
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lho
Fresh Scripter
Registered: 2008-07-14
Posts: 5
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The following makes me mad:
Using OR to check for "0" or "-1" does not work, if the result is "-1".
Well... This one works.
$RESULT = COMPAREFILETIMES (@LDrive +"\resources\file1.rtf","%appdata%\PATH\file1.rtf")
IF $RESULT = 0 OR $RESULT = 1
MessageBox ("Now we are at THEN", "Box", 4160)
GOTO END
ELSE
GOTO SKIP
GOTO END
ENDIF
:SKIP
MESSAGEBOX ("Now we are at ELSE", "Box", 4160)
:END
exit
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#188757 - 2008-07-15 01:48 PM
Re: Logical OR and "1" vs "-1"
[Re: lho]
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Glenn Barnas
KiX Supporter
Registered: 2003-01-28
Posts: 4402
Loc: New Jersey
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Since it's a VALUE, not a STRING, and you want to check for 0 OR -1, why not simply test for a value less than 1, which would include 0 and -1?
What's with the Gotos, especially the Goto Skip that's immediately followed by Goto End? That will never run the Goto End! Sloppy! "C-" (see! You're bringing out my instructor side...)
In your last test, you're comparing apples and elephants. You manually set $Result to a string, yet are trying to test for a numeric value? If you want to test the logic, try this:
$Result = -1 ; alternately set this value to -1, 0, and then 1
If $Result < 1
$ = MessageBox('Result is -1 or 0', 'Result Status', 4160)
Else
$ = MessageBox('Result is 1', 'Result Status', 4160)
EndIf
This function really begs for a case statement, though..
$File1 = 'this file' ; change these as appropriate - use full paths
$File2 = 'that file'
; set the Result value based on file time comparison
$Result = CompareFileTimes($File1, $File2)
; Use Select to decide what to do
Select
Case $Result = -2 ; no source
'The source file was not found - cannot continue!' ?
Quit 2
Case $Result < 0 ; target older or missing - update
'Updating the target file!' ?
Copy $File1 $File2
Case 0 ; files are identical - do nothing
'Files are identical!' ?
Case 1 ; target is newer? Is this OK?
'Target is newer!' ?
EndSelect
Finally - why messageboxes for all your output? Script development and testing should be done from a command prompt so you can see the errors that are generated - running from explorer will mask many important bits of information.
Glenn
_________________________
Actually I am a Rocket Scientist! 
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#188780 - 2008-07-16 10:35 AM
Re: Logical OR and "1" vs "-1"
[Re: Glenn Barnas]
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lho
Fresh Scripter
Registered: 2008-07-14
Posts: 5
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Grade accepted and improvement promised...
Good idea, to check for less than "1". But I think, I found what I was looking for. What about you? Still waiting for the impact? ;-)
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