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user input syntax check

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hello world!

i am trying to validate user input as valid syntax.  i am asking the user to fill in an input with file types they would like to process.  i would like to check their syntax to make sure they arent missing a comma, period and make sure they have things in the right order.  however i am going by with how many asterisks are in the string.  my method doesnt seem full proof and i'd like to see if anyone has any better ideas.

thanks in advance!

#include <array.au3>

$msg_normal = 0

$string = "*.jpg*.jpeg, *.gif,*wav"
$string = StringStripWS($string, 8)

StringReplace($string, "*", "")
$number_of_asterisks = @extended

;comma check
StringReplace($string, ",", "")
$number_of_commas = @extended

If $number_of_commas <> $number_of_asterisks - 1 Then
    Debug("please check commas")

;period check
StringReplace($string, ".", "")
$number_of_periods = @extended

If $number_of_periods <> $number_of_asterisks Then
    Debug("please check periods")

;type check
$seq_matches = StringRegExp($string, "\*\.", 3)
$number_of_types = UBound($seq_matches)

If $number_of_types <> $number_of_asterisks Then
    Debug("please check syntax")

Func Debug($variable1 = "", $variable2 = "", $variable3 = "")

;~  #include <array.au3>
;~  $msg_normal = 0

    If IsArray($variable1) Then
        If $variable2 <> "" Then
            $variable1 &= @CRLF & $variable2

        If $variable3 <> "" Then
            $variable1 &= @CRLF & $variable3

        MsgBox($msg_normal, "Debug", $variable1)

EndFunc   ;==>Debug


Edited by gcue

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How about making it easy and using checkboxes instead?

If I posted any code, assume that code was written using the latest release version unless stated otherwise. Also, if it doesn't work on XP I can't help with that because I don't have access to XP, and I'm not going to.
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yea i thought about that but there are some pretty weird file types out there and i wanted to give the user flexibility.  

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not sure what that pattern is doing.. 


1= no error

seems to be the case?


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There's probably a simpler pattern, but this seems to do what I think you want. The user can add spaces between each file format and extensions can be any length or include numbers e.g. *.pspimage , *.mp4

I should add 'you are welcome' :)

Edited by czardas

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