NAME

       unicode::wordbreak_callback_base, unicode::wordbreak_callback_base - unicode word-breaking rules

SYNOPSIS

       #include <courier-unicode.h>

       class wordbreak : public unicode::wordbreak_callback_base {

       public:

           using unicode::wordbreak_callback_base::operator<<;
           using unicode::wordbreak_callback_base::operator();
           int callback(bool flag)
           {
               // ...
           }
       };

       char32_t c;
       std::u32string buf;

       wordbreak compute_wordbreak;

       compute_wordbreak << c;

       compute_wordbreak(buf);
       compute_wordbreak(buf.begin(), buf.end());

       compute_wordbreak.finish();

       // ...

       unicode_wordbreakscan scan;

       scan << c;

       size_t nchars=scan.finish();

DESCRIPTION

       unicode::wordbreak_callback_base is a C++ binding for the unicode word-breaking rule implementation
       described in unicode_word_break(3).

       Subclass unicode::wordbreak_callback_base and implement callback() that's virtually inherited from
       unicode::wordbreak_callback_base. The callback() callback function receives the output values from the
       word-breaking algorithm, namely a bool indicating whether a word break exists before the unicode
       character in the underlying input sequence.

       callback() should return 0. A non-zero return reports an error, that stops the word-breaking algorithm.
       See unicode_word_break(3) for more information.

       The input unicode characters for the word-breaking algorithm are provided by the << operator, one unicode
       character at a time; or by the () operator, passing either a container, or a beginning and an ending
       iterator value for an input sequence of unicode characters.  finish() indicates the end of the unicode
       character sequence.

       unicode::wordbreakscan is a C++ binding for the unicode_wbscan_init(), unicode_wbscan_next() and
       unicode_wbscan_end methods described in unicode_word_break(3). Its << iterates over the unicode
       characters, and finish() indicates the number of characters before the first unicode word break. The <<
       iterator returns a bool indicating when the first word break has already been found, so further calls are
       not necessary.

SEE ALSO

       courier-unicode(7), unicode_word_break(3).

AUTHOR

       Sam Varshavchik
           Author