UnicodeString to char* (UTF-8)

c++ windows utf-8 internationalization icu
zfedsa picture zfedsa · Jun 30, 2010 · Viewed 9.1k times · Source

I am using the ICU library in C++ on OS X. All of my strings are UnicodeStrings, but I need to use system calls like fopen, fread and so forth. These functions take const char* or char* as arguments. I have read that OS X supports UTF-8 internally, so that all I need to do is convert my UnicodeString to UTF-8, but I don't know how to do that.

UnicodeString has a toUTF8() member function, but it returns a ByteSink. I've also found these examples: http://source.icu-project.org/repos/icu/icu/trunk/source/samples/ucnv/convsamp.cpp and read about using a converter, but I'm still confused. Any help would be much appreciated.

Answer

Steven R. Loomis picture Steven R. Loomis · Jun 30, 2010

call UnicodeString::extract(...) to extract into a char*, pass NULL for the converter to get the default converter (which is in the charset which your OS will be using).

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