utf8_strings.h

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#ifndef LH_UTF8_STRINGS_H
#define LH_UTF8_STRINGS_H
 
#include "types.h"
 
namespace litehtml
{
    // converts UTF-32 ch to UTF-8 and appends it to str
    void append_char(string& str, char32_t ch);
    char32_t read_utf8_char(const string& str, int& index);
    void prev_utf8_char(const string& str, int& index);
 
    class utf8_to_utf32
    {
        std::u32string m_str;
    public:
        utf8_to_utf32(const string& val);
        operator const char32_t*() const
        {
            return m_str.c_str();
        }
    };
 
    class utf32_to_utf8
    {
        string m_str;
    public:
        utf32_to_utf8(const std::u32string& val);
        operator const char*() const
        {
            return m_str.c_str();
        }
        const char* c_str() const
        {
            return m_str.c_str();
        }
    };
 
#define litehtml_from_utf32(str)    litehtml::utf32_to_utf8(str)
#define litehtml_to_utf32(str)      litehtml::utf8_to_utf32(str)
}
 
#endif  // LH_UTF8_STRINGS_H