Converting Multibyte characters to UTF-8

My application has to write data to an XML file which will be read by a swf file. The swf expects the data in the XML to be in UTF-8 encoding. I have to convert some Multibyte characters in my app(Chinese simplified, Japanese, Korean etc..) to UTF-8. Are there any API calls which could allow me to do this?I would prefer not to use any 3rd party dlls. I need to do it both on Window开发者_C百科s and on Mac and would prefer any system API's if available.

Thanks jbsp72

UTF-8 is a multibyte encoding (Well, a variable byte-length encoding to be precise). Stating that you need to convert from a multibyte encoding is not enough. You need to specify which multibye encoding your source is?

I have to convert some Multibyte characters in my app(Chinese simplified, Japanese, Korean etc..) to UTF-8.

if your original string is in multibyte (chinese/arabic/thai/etc..) and you need to convert it to other multibyte (UTF-8), One way is to convert to WideCharacter(UTF-16) first, then convert back to multibyte.

multibyte(chinese/arabic/thai/etc) -> widechar(UTF-16) -> multibyte(UTF-8)

if your original string is already in Unicode(UTF-16), you can skip the first conversion in the above illustration

you can refer the codepage from MSDN.

Google Chrome has some string conversion implementations for Windows, Linux, and Mac. You can see it here or here. the files are under src/base:
+ sys_string_conversions.h
+ sys_string_conversions_linux.cc
+ sys_string_conversions_win.cc
+ sys_string_conversions_mac.mm

The code uses BSD license so you can use it for commercial projects.