Searching a file and return line number?

[Steveiwonder]

Howdy,

I'm wondering if its possible to search a file for a particular string? and return the line number?

I know it can be done using FileReadLine.. However i have file which are 12,000+ lines long and 15-20 of them.

King Regards,

S

[Fulano]

Well, provided that you let FileReadLine manage the line number on it's own, and send it a file handle instead of a file name, the performance shouldn't be too bad.

Personally though, I tend to outsource those kind of operations to programming languages that are designed for string/file processing by calling them and then catching the return with Run(). That being said, I also tend to end up with AutoIt scripts that are directing their little armies of python/perl/etc scripts - so it's not exactly an elegant solution .

Edit: English is being less than kind to me today.

Edited March 25, 2010 by Fulano

[KaFu]

Maybe via _FileReadToArray() and then loop through results to determine the element aka line number? Not sure if that give you a better performance ...

[Steveiwonder]

Appreciate reply, however the would probbaly take a while too.

I've found an alternative by using Iniread.

Edited March 25, 2010 by Steveiwonder

[Fulano]

Maybe via _FileReadToArray() and then loop through results to determine the element aka line number? Not sure if that give you a better performance ...

Mercy, that would use up RAM like there's no tomorrow.

[KaFu]

Mercy, that would use up RAM like there's no tomorrow.

12.000 lines is like what? ~ 300-400 KB? What amount of RAM can that consume?

[Fulano]

Depends how long the lines are .

I just personally think it's a bad habit to write a program that depends on the user never deciding the feed it something massive, especially because I doubt most users would check the size of the file before sending it into a program. It's just not something they think about.

Edit: spelling error.

Edited March 29, 2010 by Fulano

[junkew]

1. read the whole file into a string

2. find the position of the value in the string

3. Then do a regexp search for CRLF in the stringleft(wholestring,position)