ICU defines UChar to be an unsigned 16-bit unit (an unsigned short, or uint16_t). Strings are in UTF-16, not UTF-8.
When you know that you are dealing with Unicode code units and a conversion to US-ASCII, then all you need to do is to truncate each of these 16-bit units to 8 bits (to char). This will not work for any values >=0x80, of course, so you should check for that. If you have some ASCII-based codepage like GBK, but not US-ASCII itself, then you need to use a converter. See http://oss.software.ibm.com/icu/apiref/ucnv_h.html and http://oss.software.ibm.com/icu/userguide/ If you have actual UTF-8 strings (not UChar *), then you do not need to do anything to convert to US-ASCII because the latter is a subset of the former, even encoding-wise. (You should still check that no value is >=0x80.) For further technical questions about ICU please consult the homepage and subscribe to the icu mailing list: http://oss.software.ibm.com/icu/ Best regards, markus > "Magda Danish (Unicode)" wrote: > -----Original Message----- > From: xuxiao.263 [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, October 16, 2001 9:51 PM > To: [EMAIL PROTECTED] > Subject: How to convert UChar(definded by icu same as the utf-8) to ascii? > > hi,I want your help. > How to convert UChar(definded by icu same as the utf-8) to ascii? > Could you give me an example written by C?
