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RagsRevenge

StringRegExpReplace Help pleae

7 posts in this topic

Hello folks,

I must have a fundamental misunderstanding of classes and how they work in AutoIt regular expressions. I want to be able to determine how many alpha characters are in a string.

Here's a small test to show my difficulty.

test1() ;works, but nasty looking
ConsoleWrite(@CRLF)
test2() ;preferred "solution", but doesn't work.

func test1()
    Local $str = "(* test *)"
    ConsoleWrite($str  & @CRLF)
    $str = StringRegExpReplace($str, "[abcdefghijklmnopqrstuvwxyz]", "@")
    Local $repl = @extended
    ConsoleWrite($str  & @CRLF)
    ConsoleWrite($repl  & @CRLF)
EndFunc

func test2()
    Local $str = "(* test *)"
    ConsoleWrite($str  & @CRLF)
    $str = StringRegExpReplace($str, "[:alpha:]", "@")
    Local $repl = @extended
    ConsoleWrite($str  & @CRLF)
    ConsoleWrite($repl  & @CRLF)
EndFunc

Any help greatly appreciated.

D

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RagsRevenge,

You need to place the Class inside a set like this:

test1() ;works, but nasty looking
ConsoleWrite(@CRLF)
test2() ;preferred "solution", but does work now!!!!

func test1()
    Local $str = "(* test *)"
    ConsoleWrite($str  & @CRLF)
    $str = StringRegExpReplace($str, "[abcdefghijklmnopqrstuvwxyz]", "@")
    Local $repl = @extended
    ConsoleWrite($str  & @CRLF)
    ConsoleWrite($repl  & @CRLF)
EndFunc

func test2()
    Local $str = "(* test *)"
    ConsoleWrite($str  & @CRLF)
    $str = StringRegExpReplace($str, "[[:alpha:]]", "@") ; <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
    Local $repl = @extended
    ConsoleWrite($str  & @CRLF)
    ConsoleWrite($repl  & @CRLF)
EndFunc

Used to catch me out a lot when I started with SREs. :)

M23


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#3 ·  Posted (edited)

$str = StringRegExpReplace($str, "[[:alpha:]]", "@")

Try "[[:alpha:]]" since "[:alpha:]" does only provide a sting like "a-z" and needs to be inside of a set, "[a-zA-Z]" would do it as well.

Edit: Melba23 was faster.

Edited by FichteFoll

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You can specify character ranges as a class, so here's how I'd do it. This will match anything in the alphabet in either upper or lowercase.

StringRegExpReplace($str, "[A-z]", "")

I don't like using the :classes:, and I always use the above for stuff like this :)

Mat

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You can specify character ranges as a class, so here's how I'd do it. This will match anything in the alphabet in either upper or lowercase.

StringRegExpReplace($str, "[A-z]", "")

I don't like using the :classes:, and I always use the above for stuff like this :)

Mat

Mat, the above will also catch these characters: [\]^_`

You should change it to "[A-Za-z]" or put a case-insensitive modifier with a single case range -> "(?i)[A-Z]"

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You know :) I never thought of that (goes off to test...) So it does ;) You learn something new every day, even when at school :idiot:

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RagsRevenge,

You need to place the Class inside a set Used to catch me out a lot when I started with SREs. ;)

M23

And now I can start using Classes in Regular expressions. :)

Thanks to everybody.

D

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