polps Posted February 26, 2014 Share Posted February 26, 2014 Hello all. I'm facing an odd situation with FileGetPos statement. Referring to the following simple code ; Autoit version 3.3.8.1 $file = "file.txt" $ofile = FileOpen ( $file, 0 ) While 1 $pos = FileGetPos ( $ofile ) $line = FileReadLine ( $ofile ) If @error Then ExitLoop msgbox (0,0, $pos ) WEnd FileClose ( $ofile ) and this simple TXT file with only 3 records as example first line second line third line I espected taht - for each loop - $pos showed me the current line number (from 0 to 2); Instead $pos increase in a strange way getting - for each loop - the values 0, 12, 25. Why? Can anyone help me? Thanks! Gianluca Link to comment Share on other sites More sharing options...
FireFox Posted February 26, 2014 Share Posted February 26, 2014 (edited) Hi, The offset is NOT the line number, it's the position of the stream and one offset corresponds to a character in the file. Edit : FYI the "new line" is a character. Br, FireFox. Edited February 26, 2014 by FireFox Link to comment Share on other sites More sharing options...
polps Posted February 26, 2014 Author Share Posted February 26, 2014 Thanks firefox. So, when I parse the file, how to retrive the current line number? Link to comment Share on other sites More sharing options...
FireFox Posted February 26, 2014 Share Posted February 26, 2014 It depends on how do you want to parse the file, by line? FileReadLine has a parameter to read the line you want. Br, FireFox. Link to comment Share on other sites More sharing options...
polps Posted February 26, 2014 Author Share Posted February 26, 2014 I would parse the file from the beginning with FileReadLine in a loop I search a determined string with StringInStr If the current line contains the searched string, I would retrieve the current line number, and move backward a certain number of line (with FileSetPos) now I am understanding that there is no a direct method to retrieve the current line number and to move up or down scrolling the files... may be I have to find a workaround. thanks again Link to comment Share on other sites More sharing options...
Solution FireFox Posted February 26, 2014 Solution Share Posted February 26, 2014 Well, if you use FileReadLine it's you who gives the line number so it's explicit that you know it through a variable. #include <File.au3> For $i = 1 To _FileCountLines("toto.txt") ;the file line number is $i ConsoleWrite(FileReadLine("toto.txt", $i) & @Lf) Next Br, FireFox. Link to comment Share on other sites More sharing options...
polps Posted February 26, 2014 Author Share Posted February 26, 2014 yes, undestood. Thanks a lot. Br Gianluca. Link to comment Share on other sites More sharing options...
BrewManNH Posted February 26, 2014 Share Posted February 26, 2014 I would do it this way, then you're not parsing the script twice, and you're not using the line number parameter in FileReadLine, because if the file is large it's going to be very slow. $file = "file.txt" $ofile = FileOpen($file) Global $pos = 1 While 1 $line = FileReadLine ( $ofile ) If @error Then ExitLoop msgbox (0,0, $pos ) $pos += 1 WEnd FileClose ( $ofile ) If I posted any code, assume that code was written using the latest release version unless stated otherwise. Also, if it doesn't work on XP I can't help with that because I don't have access to XP, and I'm not going to.Give a programmer the correct code and he can do his work for a day. Teach a programmer to debug and he can do his work for a lifetime - by Chirag GudeHow to ask questions the smart way! I hereby grant any person the right to use any code I post, that I am the original author of, on the autoitscript.com forums, unless I've specifically stated otherwise in the code or the thread post. If you do use my code all I ask, as a courtesy, is to make note of where you got it from. Back up and restore Windows user files _Array.au3 - Modified array functions that include support for 2D arrays. - ColorChooser - An add-on for SciTE that pops up a color dialog so you can select and paste a color code into a script. - Customizable Splashscreen GUI w/Progress Bar - Create a custom "splash screen" GUI with a progress bar and custom label. - _FileGetProperty - Retrieve the properties of a file - SciTE Toolbar - A toolbar demo for use with the SciTE editor - GUIRegisterMsg demo - Demo script to show how to use the Windows messages to interact with controls and your GUI. - Latin Square password generator Link to comment Share on other sites More sharing options...
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