Morphie
25th July 2002 20:31 UTC

Read, edit a single line in a file?
  Is it possible for NSIS to edit a single line in a file? Like overwrite line 2 of runmefirst.bat with "move ..\setup\*.* .\setup32"

kichik
25th July 2002 20:56 UTC

You will have to read the file using FileRead line by line and write to another temporary file, using FileWrite. When you reach the desired line write the line you want to replace it instead of the line read. After you write your line, continue reading and writing like before. Then just replace the old file with the temporary file.

Morphie
25th July 2002 23:29 UTC

That... is confusing. :weird: Could you give me an example?

kichik
26th July 2002 12:49 UTC

FileOpen $0 "file.txt" r

GetTempFileName $R0

FileOpen$1 $R0 w

loop:

  FileRead $0 $2

   IfErrors done

   StrCmp$2 "line to replace$\r$\n" 0 +3

      FileWrite$1 "replacement of line$\r$\n"

      Goto loop

   FileWrite$1 $2

   Goto loop


done:

  FileClose $0

   FileClose$1

   Delete "file.txt"

  CopyFiles /SILENT $R0 "file.txt"

   Delete $R0 

>

Morphie
26th July 2002 18:23 UTC

THAT one helps! Thanks!