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Remove Line contains Var

 
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helpmeplz
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PostPosted: Fri Sep 05, 2008 12:18 am    Post subject: Remove Line contains Var Reply with quote
I need help with a function I'm trying to do.

Basically a variable is going to come in with a header that identifys that this is for deleting.

It will look something like this
Code:

1=a1

; Text File bellow

Line1=~Open~a1~8
Line2=~Open~a2~8

What I want to do is find which line in the text file contains the contents of variable "1" and remove the entire line completely.

I tried
Code:

fileread, in, %textfile%
stringreplace, out, in, %1%`r`n

but it doesnt seem to work

Any other suggestions?
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Serenity



Joined: 07 Nov 2004
Posts: 1271
PostPosted: Fri Sep 05, 2008 12:43 am    Post subject: Reply with quote
You can use a parsing loop to find and remove the line, and use FileDelete/FileAppend to create the replacement file.

Code:
ifnotexist, example.txt
   fileappend, one`ntwo`nthree`nfour, example.txt ; create file

1=three
fileread, file, example.txt
loop, parse, file, `n
{
   if a_loopfield not contains %1%
      newfile .= (newfile != "" ? "`n" : "") . a_loopfield   
}
filedelete, example.txt
fileappend, %newfile%, example.txt

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Hasso



Joined: 23 Mar 2005
Posts: 321
Location: Germany
PostPosted: Mon Sep 08, 2008 10:36 am    Post subject: Reply with quote
I think it would be no good idea to name a variable as a number. In most programming languages this is forbidden.
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Hasso

Programmers don't die, they GOSUB without RETURN
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Wouther



Joined: 01 May 2007
Posts: 83
Location: The Netherlands
PostPosted: Mon Sep 08, 2008 3:05 pm    Post subject: Reply with quote
@Hasso: I agree. Besides, variables named as numbers are used as the script's parameters in ahk.

Here's my small contribution, it being a function, it also returns how many lines where removed:
Code:
MsgBox, % FileRemoveLine("YourFile.txt", "YourText") . " lines have been removed."

FileRemoveLine(paramFile, paramKey)
{
   c := 0, tmp := A_Temp . "\TMP_" . A_ScriptName . "_" . A_TickCount . ".txt"
   Loop, Read, % paramFile, % tmp
      IfNotInString, A_LoopReadLine, % paramKey
         FileAppend, % A_LoopReadLine
      Else c++
   FileMove, % tmp, % paramFile, 1
   Return c
}

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Serenity



Joined: 07 Nov 2004
Posts: 1271
PostPosted: Mon Sep 08, 2008 3:08 pm    Post subject: Reply with quote
If the file is big that is alot of disk writes - one for each line. Reading the file into a variable and parsing it is probably better.
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