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aseitz

Need help with RegEx

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aseitz

Hello,

I am stuck trying to come up with a RegEx that will filter a list of data.

The data is an array of folder names on a system, and I am trying to identify folder names that start with letters and end with 4 numbers.

The folders will always start with an amount of letters equal to 2 or greater. The name must also end with 4 numbers and have no more data after that.

 

For example here are some valid names I am trying to catch: aaaaa1234, aa4444, asd6543, aaaaaaaaaaaaaaaaaaaaaaaa3333 (you get the idea).

So far I have a way to get the 4 numbers on the right: 

StringRegExp($ProfileNames[$i], "\d{4}\Z", 0)

 

Thanks in advance!

 

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JLogan3o13

Can you confirm your criteria as being: at least 2 letters to begin and no more than four numbers to end? Anything in the middle is irrelevant?


√-1 2^3 ∑ π, and it was delicious!

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aseitz
18 minutes ago, JLogan3o13 said:

Can you confirm your criteria as being: at least 2 letters to begin and no more than four numbers to end? Anything in the middle is irrelevant?

That is correct! The only catch is that anything in the middle must not be a number.

Thanks!

 

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JLogan3o13
1 minute ago, aseitz said:

The only catch is that anything in the middle must not be a number.

These kinds of caveats are good to know off the bat. So the file name must have at least 2 letters at the beginning, and only 4 numbers at the end?


√-1 2^3 ∑ π, and it was delicious!

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aseitz

Yes. That is exactly it.

Thanks!

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jchd

Try this:

Local $aFolders = [ _
    "aaaaa1234", _                      ; OK
    "aa4444", _                         ; OK
    "asd6543", _                        ; OK
    "aaaaaaaaaaaaaaaaaaaaaaaa3333", _   ; OK
    "a45679", _                         ; no only 1 letter ahead)
    "aaaaa12", _                        ; no (no 4 digits trailing)
    "a2", _                             ; no (too short)
    "2", _                              ; no (too short)
    "a", _                              ; no (too short)
    "没有这样的文件1234", _              ; OK ("letters" ahead)
    "zzzzzzz45645", _                   ; no (digits in between [more than 4 trailing)
    "fgdshnio333fno4567", _             ; no (digits in between)
    "3fdsnofds*******4567", _           ; no (starts with digit)
    "Русский/////////۳۵٢٨" _         ; OK (letters ahead, 4 decimal digits trailing (Hindi digits)
]

For $s In $aFolders
    MsgBox(0, "", $s & @LF & (StringRegExp($s, "(*UCP)^\p{L}{2}\D*\d{4}$") ? " matches" : " fails") & " the criterion.")
Next

As you can see, Unicode letters and decimal digits are correctly recognized and considered, not only A-Z and 0-9. If you're sure to never have to deal with non-ASCII letters (and I mean a-z A-Z, excluding letters with diacritics), replace

(*UCP)^\p{L}
by
[[:alpha:]]

in the pattern.

  • Like 1

This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.
Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe here
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PCRE v8.33 regexp documentation latest available release and currently implemented in AutoIt beta.

SQLitespeed is another feature-rich premier SQLite manager (includes import/export). Well worth a try.
SQLite Expert (freeware Personal Edition or payware Pro version) is a very useful SQLite database manager.
An excellent eBook covering almost every aspect of SQLite3: a must-read for anyone doing serious work.
SQL tutorial (covers "generic" SQL, but most of it applies to SQLite as well)
A work-in-progress SQLite3 tutorial. Don't miss other LxyzTHW pages!
SQLite official website with full documentation (may be newer than the SQLite library that comes standard with AutoIt)

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aseitz

That works perfectly!!!! You are awesome!

Thanks you so much for your help and the lesson!

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