utf8.h

/*
 *  utf8 module interface
 *
 *  This file is part of OTAWA
 *  Copyright (c) 2016, IRIT UPS.
 *
 *  OTAWA is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  OTAWA is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with OTAWA; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#ifndef ELM_STRING_UTF8
#define ELM_STRING_UTF8
 
#include <elm/types.h>
#include <elm/PreIterator.h>
#include <elm/string.h>
#include <elm/util/MessageException.h>
 
namespace elm { namespace utf8 {
 
typedef t::uint32 char_t;
 
class Exception: public MessageException {
public:
    inline Exception(string m): MessageException(m) { }
};
 
 
class Iter: public PreIterator<Iter, char_t> {
public:
    inline Iter(const char *str, elm::t::size size)
        : p(str), q(p + size), c(0) { parse(); }
    inline Iter(cstring str)
        : p(str.chars()), q(p + str.length()), c(0) { parse(); }
    inline Iter(string str)
        : p(str.toCString().chars()), q(p + str.length()), c(0) { parse(); }
 
    inline bool ended(void) const { return !c; }
    inline const char_t& item(void) const { return c; }
    inline void next(void) { return parse(); }
 
private:
    void parse(void);
    const char *p, *q;
    char_t c;
};
 
} } // elm::utf8
 
#endif  // ELM_STRING_UTF8