MysticEmpires2k
27th August 2002 10:16 UTC

FileOpen and FileWrite
  I want Open a file an than i want Write a Strin i this file.But how is the Problem.


Function open
FileOpen $0 $INSTDIR\dir1\file1.cfg w
FileWrite $0 Read this
FunctionEnd

Soory for my bad english.
Soory for the so simpel Problem but i was a beginner.

kichik
27th August 2002 10:37 UTC

What is the problem?

A few possible reasons for whatever problem it is:
1) You forgot FileClose
2) If you want to add to the file use the a mode (append) instead of w (write).
3) You must seek to the end of the file using FileSeek if you don't wish to overwrite anything.
4) You forgot to quote Read This. The line should be FileWrite $0 "Read This". If you don't quote, NSIS will treat this as two strings and the word "This" will be treated as the maximum length of the string to write.

MysticEmpires2k
27th August 2002 10:54 UTC

Function open
FileOpen $0 $INSTDIR\dir1\file1.cfg a
FileSeek $0 offset END $1
FileWrite $0 "Read This"
FileClose $0
FunctionEnd


1 warning:
install function "open" not referenced - zeroing code (6-10) out

kichik
27th August 2002 11:05 UTC

Functions don't get executed by the installer just like that. Sections are executed according to the user selection, callback functions (.on* and un.on*) get called according to special events, but regular functions must be called manaually using Call.

Offset should be a number. If you wish to seek to the end use `FileSeek $0 0 END`.

Here is an example script for the functions stuff:

Name "asd"

>OutFile "asdsad.exe"


>Function doStuff

  DetailPrint "i am doing stuff..."

>FunctionEnd


Section "install files"

 ; install files

 ; write to the registry

  Call doStuff; do other stuff

 ; install some more

 ; Call doStuff ; do other stuff again

SectionEnd 

>

MysticEmpires2k
27th August 2002 11:24 UTC

ok thx it is super.

but ihave test it.

File before

sdfsdfsf
sdfsdfsf
sdfsdfsf
sdfsdfsf
sdfsdfsf
sdfsdfsf

File after

sdfsdfsf
sdfsdfsf
sdfsdfsf
sdfsdfsf
sdfsdfsf
sdfsdfsfRead This

But the file must be

sdfsdfsf
sdfsdfsf
sdfsdfsf
sdfsdfsf
sdfsdfsf
sdfsdfsf
Read This

The srcibt is.

Section open
FileOpen $0 $INSTDIR\cstrike\autoexec.cfg a
FileSeek $0 0 END
FileWrite $0 "Read This"
FileClose $0
SectionEnd

kichik
27th August 2002 11:29 UTC

If you want to make sure it goes down a line just add $\r$\n to the beginning of the line. FileWrite $0 "$\r$\nNew line!"