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RegEx Callbacks

 
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majkinetor



Joined: 24 May 2006
Posts: 4511
Location: Belgrade
PostPosted: Fri Jan 09, 2009 2:05 pm    Post subject: RegEx Callbacks Reply with quote
From recently, there are some efforts to introduce callouts to RegEx engine.
Before it gets done, this module can be used to achieve something similar.


Download        Documentation


Example:
Replace the server names with base name and ping information:

Code:
   text=
   (Ltrim
      www.google.com
      www.yahoo.com
      www.autohotkey.com
   )
   msgbox % RegEx_Replace(text, "www\.(.+?)\.com", "MyFunc")
return

MyFunc($, $1) {
   RunWait, cmd /C ping %$% -n 1 >out, ,Hide
   FileRead out, out
   RegExMatch(out, "Reply from .+? time=([0-9]+)ms", o)
   return $1 " (" o1 " ms)"
}

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kiropes



Joined: 21 Mar 2007
Posts: 71
PostPosted: Sat Jan 10, 2009 2:21 pm    Post subject: Reply with quote
the links don't work
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freakkk



Joined: 29 Jul 2005
Posts: 179
PostPosted: Sat Jan 10, 2009 2:23 pm    Post subject: Reply with quote
kiropes wrote:
the links don't work
Yes they do
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Laszlo



Joined: 14 Feb 2005
Posts: 4710
Location: Boulder, CO
PostPosted: Sat Jan 10, 2009 4:21 pm    Post subject: Reply with quote
Interesting! Such short AHK code, with great functionality!
- Is it basically the same as replacing all matches with special strings, and then use a Parse loop to process those strings?
- Can this function be used for finding all matches, even within other matches? Like listing all substrings of a 4 letter haystack: abcd --> a, b, c, d, ab, bc, cd, abc, bcd, abcd.
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haichen



Joined: 05 Feb 2007
Posts: 189
Location: Osnabrück, Germany
PostPosted: Sat Jan 10, 2009 7:19 pm    Post subject: Reply with quote
kiropes wrote:
the links don't work

You probably forget to translate to your local language.

Here's the german version:
Code:
MyFunc($, $1) {
   RunWait, cmd /C ping %$% -n 1 >out, ,Hide
   FileRead out, out
   RegExMatch(out, "Antwort von .+? Zeit=([0-9]+)ms", o)
   return $1 " (" o1 " ms)"
}
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majkinetor



Joined: 24 May 2006
Posts: 4511
Location: Belgrade
PostPosted: Sun Jan 11, 2009 1:26 am    Post subject: Reply with quote
Laszlo wrote:
Is it basically the same as replacing all matches with special strings, and then use a Parse loop to process those strings?

I think this allows for broather usage, not to mention far easier.

Laszlo wrote:
- Can this function be used for finding all matches, even within other matches? Like listing all substrings of a 4 letter haystack: abcd --> a, b, c, d, ab, bc, cd, abc, bcd, abcd.

No. The next matching starts after previous one (see the code, you can change that line for other effects if you want). I don't think you can do that with integrated RegExp functions, right ?

The only note you should be aware so far is that you can't access named sub-patterns in callback function. You can name function arguments the way you want so there is no need to use them, generally.
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