TheDcoder

RegEx help with extracting file name from file name w/ ext (File.txt ---> File)

13 posts in this topic

#1 ·  Posted (edited)

Hello :)

$sFile = "AutoIt.chm"

$sFile = StringRegExpReplace($sFile, "<Regex Here>", "<Regex Here>")

; I need "AutoIt" as output

I suck at RegEx :(

 

Thanks in Advance :)

Edited by TheDcoder

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#3 ·  Posted (edited)

@jguinch Thanks! :)

Straight into my RegEx library :)

Edited by TheDcoder

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and without:

$sFile = "C:\Program Files (x86)\AutoIt3\AutoIt.chm"
msgbox(0, '' , stringsplit(stringreverse((stringsplit(stringreverse($sFile) , "\" , 2)[0])) , "." , 2)[0])

 


,-. .--. ________ .-. .-. ,---. ,-. .-. .-. .-.
|(| / /\ \ |\ /| |__ __||| | | || .-' | |/ / \ \_/ )/
(_) / /__\ \ |(\ / | )| | | `-' | | `-. | | / __ \ (_)
| | | __ | (_)\/ | (_) | | .-. | | .-' | | \ |__| ) (
| | | | |)| | \ / | | | | | |)| | `--. | |) \ | |
`-' |_| (_) | |\/| | `-' /( (_)/( __.' |((_)-' /(_|
'-' '-' (__) (__) (_) (__)

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@boththose That is one messed up code, here is my version:

$sFile = "C:\Program Files (x86)\AutoIt3\AutoIt.chm"

MsgBox(0, "RegEx is awesome", StringRegExpReplace($sFile, "^.*\\|\..*$", ""))

TD :)

 

P.S That RegEx is from my RegEx library ;)


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Or you can have a nice chat with me in freenode, I use the same nick on freenode too!

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#6 ·  Posted (edited)

it is really just two things crammed into one.

1) reverse the entire string, so that when i split on the "\" position [0] will be the file name with extension, backwards

2) reverse that backwards file name so that when i split on "." the file name minus extension is in position [0]

Edited by boththose
1 person likes this

,-. .--. ________ .-. .-. ,---. ,-. .-. .-. .-.
|(| / /\ \ |\ /| |__ __||| | | || .-' | |/ / \ \_/ )/
(_) / /__\ \ |(\ / | )| | | `-' | | `-. | | / __ \ (_)
| | | __ | (_)\/ | (_) | | .-. | | .-' | | \ |__| ) (
| | | | |)| | \ / | | | | | |)| | `--. | |) \ | |
`-' |_| (_) | |\/| | `-' /( (_)/( __.' |((_)-' /(_|
'-' '-' (__) (__) (_) (__)

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#7 ·  Posted (edited)

First things first, if you don't know how to do it with native string functions, then regular expressions are going to be very difficult for you.

Local $sFilePath = "C:\Program Files (x86)\AutoIt3\AutoIt.chm"
Local $iPos = StringInStr($sFilePath, ".", Default, -1)
If $iPos > 0 Then ; Checking a . exists
    Local $sFileNameOnly = StringLeft($sFilePath, $iPos - 1)

    $iPos = StringInStr($sFileNameOnly, "\", Default, -1)
    If $iPos > 0 Then ; Checking a \ exists
        $sFileNameOnly = StringTrimLeft($sFileNameOnly, $iPos) ; Trim up until the last \
    EndIf

    ConsoleWrite($sFileNameOnly & @CRLF)
EndIf

 

Edited by guinness

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Updated: 04/09/2015

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@guinness Thanks, but I used them already, Now I use regex because its more efficient (and simple)

TD :)


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More efficient and simple? Seems a little contradictory to what you posted above. I personally wouldn't call them simple nor would I suggest they are always efficient. Native string functions actually fair better on some tests I have conducted. It's just knowing which one to use and when.


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Updated: 04/09/2015

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Native string functions actually fair better on some tests I have conducted

​It depends.... RegEx are useful when verifying format in stings, Native string function are better most of the time (Ex. If no. of characters is constant in file extensions then I would simply use StringTrimRight)

 

TD :)


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Some messages & Apologizes:

If I hurt you, Please accept my apologies, I never (regardless of the situation) mean to hurt anybody!!!

Also, I am very busy with my project so I will appear in the last row of the online list, if you want to contact me: Email@TheDcoder.xyz

Or you can have a nice chat with me in freenode, I use the same nick on freenode too!

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Why reinvent the wheel, unless the reason for doing this is just to learn how to use regular expressions.

Have you seen this

#include <File.au3>
_PathSplit ( $sFilePath, ByRef $sDrive, ByRef $sDir, ByRef $sFileName, ByRef $sExtension )

 


"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the universe trying to build bigger and better idiots. So far, the universe is winning."- Rick Cook

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#12 ·  Posted (edited)

Why reinvent the wheel, unless the reason for doing this is just to learn how to use regular expressions.

Have you seen this

#include <File.au3>
_PathSplit ( $sFilePath, ByRef $sDrive, ByRef $sDir, ByRef $sFileName, ByRef $sExtension )

 

​That's true and in new versions it uses regular expressions to parse the file path.

Edited by guinness

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Updated: 04/09/2015

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@Bowmore Wow, I didn't saw that function before

Thanks! TD :)


AutoIt.4.Life Clubrooms - Life is like a Donut (secret key)

Spoiler

My contributions to the AutoIt Community

Some messages & Apologizes:

If I hurt you, Please accept my apologies, I never (regardless of the situation) mean to hurt anybody!!!

Also, I am very busy with my project so I will appear in the last row of the online list, if you want to contact me: Email@TheDcoder.xyz

Or you can have a nice chat with me in freenode, I use the same nick on freenode too!

3fHNZJ.gif

PLEASE JOIN ##AutoIt AND HELP THE IRC AUTOIT COMMUNITY!

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