extracting part of a file name?

[vocoder]

so lets say i have a file called

myfile_02272007_text.txt

is there anyway to get the 02272007 part?

basically i want to a scan a directory for any file that begins with myfile_ and ends with _text.txt - and then get the number in the middle....if the number in the middle is greater than the previous one i have saved, process it. but i have no idea how to do this, or if it is even possible?

[SmOke_N]

Look at _PathSplit if you are getting the entire path...

Then or look at _StringBetween().

[J_Y_C]

stringsplit() would work very well also.

[SmOke_N]

stringsplit() would work very well also.

That would work yes... or even :

$sString = 'myfile_02272007_text.txt'
$aNum = StringRegExp($sString, '.*?(\d+)', 1)
If IsArray($aNum) Then MsgBox(0, '', $aNum[0])

[MrCreatoR]

Try this function:

#include <Array.au3>

$Ret = _StringStripNotNum('myfile_02272007_text.txt')
MsgBox(0, "", $Ret)

$RetArr = _StringStripNotNum('myfile_02272007_text.txt', 1)
_ArrayDisplay($RetArr, "_StringStripNotNum Demo")

Func _StringStripNotNum($String, $RetType=0)
    $String = StringRegExpReplace($String, '[^0-9]', '')
    If $RetType = 1 Then Return StringSplit ($String, "")
    Return $String
EndFunc

Edited February 28, 2007 by MsCreatoR

[WeMartiansAreFriendly]

i would like too add to this

;Harder way

$file = 'myfile_02272007_text.txt'

$myfile = StringLeft($file,StringInStr($file,'_'))
$number = StringTrimRight( StringMid($file,StringInStr($file,'_')+1), StringInStr($file,'_',-1) +2)
$text = StringRight($file,StringInStr($file,'_')+2)

msgbox(0,'Harder',$myfile&@LF&$number&@LF&$text)


;Easier way
$file = 'myfile_02272007_text.txt'

$split = StringSplit($file,'_')

If Not @error Then msgbox(0,'Easy',$split[1]&'_' &@lf& $split[2] &@lf& '_'&$split[3])

[vocoder]

thanks. now what if I don't know the name of the file, other than my and text....so i will never know the number 02272007, is there a wildcard function or something

$file = "my_*_text.txt";

?

[MrCreatoR]

$String = "my_*_text.txt"
MsgBox(0, "", _GetMidleString($String, "_", "_"))

Func _GetMidleString($String, $DelimStart="_", $DelimEnd="_")
    Local $FirstPos = StringInStr($String, $DelimStart)
    Local $MidleStr = StringTrimLeft($String, $FirstPos)
    Local $SecondPos = StringInStr($MidleStr, $DelimEnd) + $FirstPos
    Return StringTrimRight(StringTrimLeft($String, $FirstPos), (StringLen($String) - $SecondPos + 1))
EndFunc

Edited March 2, 2007 by MsCreatoR

[SmOke_N]

I seriously don't know why this has gone past the StringRegExp().

$sString = 'myfile_02272007_text.txt'
$aNum = StringRegExp($sString, '_(\d+)_', 1)
If IsArray($aNum) Then MsgBox(0, '', $aNum[0])

[lod3n]

Because regex makes newbs cry.

[PaulIA]

I have file/path functions in the Auto3Lib Strings module that might be helpful:

_Str_ChangeFileExt - Changes the extension of a filename

_Str_ExtractFile - Extracts the name part of the given filename

_Str_ExtractFileName - Extracts the name and extension parts of the given filename

_Str_ExtractFilePath - Extracts the drive and directory parts of the given filename

[SmOke_N]

Because regex makes newbs cry.

... I couldn't stop chuckling!!

[MrCreatoR]

SmOke_N

$sString = 'myfile_02272007_text.txt'

$aNum = StringRegExp($sString, '_(\d+)_', 1)

If IsArray($aNum) Then MsgBox(0, '', $aNum[0])

This is just for numbers, and what if the midle string is not numbers?

Maby this help:

$sString = 'myfile_02272007_text.txt'
MsgBox(0, "", _StringMidle($sString, "_", "_"))

Func _StringMidle($String, $Start, $End)
    $Start = StringRegExpReplace ($Start, '([\+\|\*\^\$\.\[\]\(\)\?\\])', '\\\1')
    $End = StringRegExpReplace ($End, '([\+\|\*\^\$\.\[\]\(\)\?\\])', '\\\1')
    Local $pattern = '^[^' & $Start & ']*' & $Start & '([^' & $End & ']*)' & $End & '.*$'
    Return StringRegExpReplace($String, $pattern, '\1')
EndFunc

[SmOke_N]

SmOke_N

This is just for numbers, and what if the midle string is not numbers?

basically i want to a scan a directory for any file that begins with myfile_ and ends with _text.txt - and then get the number in the middle....

[MrCreatoR]

Because this:

is there a wildcard function or something

$file = "my_*_text.txt";

I am assuming that he want the string that between the _ characters .

vocoder

Maby you tell as, what realy do you need? to find a number between these characters, or unknown string that can be there instead of 02272007?