How to printf a Chinese char to Linux command line ( terminal ) ?
1. Check terminal encoding ( mostly UTF-8 )
2. Check Source codes file encoding ( in vim, :set encoding , mostly UTF-8 )
3. In c++ source file, literal chinese is encoded with source code encoding
and compiled to bytes into your binary.
So this works : printf("%s\n", (const char*) _chinese_bytes_buffer_ );
In Qt3, QString has a method called utf8(), this returns a QCString that can
be directly casted to raw bytes with (const char*) opeartor.
These raw bytes will be utf8 encoding, and will be interpreted and displayed
correctly on a Linux console that has UTF-8 encoding.
Of course you need the Chinese font to display Chinese codepoints.
To make your script cope with different character sets, you can set the $KCODE global (or specify the -K option to the interpreter):
Was originally introduced to signal the Ruby interpreter to go into a certain encoding mode. It's currently (mis)used by several libraries to set the global encoding of text (ie. jcode and activesupport)
Values supported in Ruby1.8 appear to be:
EUC ('-e', 'e')
SJIS ('-s', 's')
UTF8 ('-u', 'u')
NONE ('-n', 'n')
When manipulating strings, include the 'jcode' library:
This will extend the string class to behave in a multi-byte fashion when appropriate, as well as introducing:
"fish".mbchar? # Returns the index of the first multibyte character in the string, or nil
"cat".jlength # The length, in characters rather than bytes, of the string
You can get even more Unicode support by using ActiveSupport.
require 'rubygems' rescue LoadError