How to write a UTF-8 file

David PiFebruary 18, 2012 at 1:11 PM#

Hi everyone.

I'm working on this for a whole day, but still couldn't find the answer. This is my problem:

1. I need to write a UTF-8 config file with nsis.

2. I'm using NSIS Unicode.

3. I've tried this code:

    FileOpen $0 $EXEDIR\CONFIG.PATH w

    FileWrite $0 $EXEDIR

    FileClose $0

This create a ANSI file.

4. I've tried FileWriteUTF16LE. It create a UTF-16LE file.

5. Finally I found a solution: Write a ANSI file. Then use the Unicode plugin to convent that file to UTF-8. But that is a ansi plugin, it's a bit complex to use in NSIS Unicode. So I don't think that is a good idea.

Could someone tell me how to directly write a UTF-8 file in NSIS? Use WinAPI or something?

Great appreciate.

David Pi

Afrow UKFebruary 20, 2012 at 9:52 AM#

Unicode NSIS must be translating the string to ANSI before passing it to WriteFile. Try calling WriteFile directly using the System plug-in.

Stu

David PiFebruary 20, 2012 at 10:01 AM#

Thank you very much. This explained my question. But how to directly call WriteFile? Any examples? I know little about System Plugin.

Afrow UKFebruary 20, 2012 at 10:08 AM#

Try a search.

Stu

AndersFebruary 20, 2012 at 11:44 AM#

You have to perform some steps with the system plugin:
0 allocate byte buffer
1 WideCharToMultiByte to convert from UTF16 to UTF8
2 kernel32::WriteFile to write the converted buffer