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// Copyright (C) 2003 Mooffie <mooffie@typo.co.il>
//
// This program 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.
//
// This program 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 this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
#ifndef BDE_CONVERTERS_H
#define BDE_CONVERTERS_H
#include <config.h>
#include <errno.h>
#ifndef EILSEQ
# define EILSEQ 2000
#endif
#ifdef USE_ICONV
# include <iconv.h>
#endif
#include "types.h"
// A Converter object converts between encodings.
//
// Converter (an abstract class)
// |
// +-- IconvConverter (used when the system has ICONV)
// |
// +-- ISO88598Converter (used when no ICONV presents)
// +-- Latin1Converter ditto
// +-- UTF8Converter ditto
const char *guess_encoding(const char *buf, int len);
class Converter {
protected:
bool ilseq_repr;
public:
// The Converter interface is based on iconv()'s interface.
// if a conversion function fails, it returns -1 and updates errno.
virtual int convert(unichar **dest, char **src, int len) = 0;
virtual int convert(char **dest, unichar **src, int len) = 0;
Converter() {
ilseq_repr = false;
}
virtual ~Converter() { }
void enable_ilseq_repr(bool val = true) {
ilseq_repr = val;
}
};
#ifdef USE_ICONV
class IconvConverter : public Converter {
iconv_t cd;
public:
IconvConverter();
virtual ~IconvConverter();
int set_source_encoding(const char *encoding);
int set_target_encoding(const char *encoding);
virtual int convert(unichar **dest, char **src, int len);
virtual int convert(char **dest, unichar **src, int len);
};
#endif
class ISO88598Converter : public Converter {
public:
virtual int convert(unichar **dest, char **src, int len);
virtual int convert(char **dest, unichar **src, int len);
};
class Latin1Converter : public Converter {
public:
virtual int convert(unichar **dest, char **src, int len);
virtual int convert(char **dest, unichar **src, int len);
};
class UTF8Converter : public Converter {
public:
virtual int convert(unichar **dest, char **src, int len);
virtual int convert(char **dest, unichar **src, int len);
};
class ConverterFactory {
static Converter *get_internal_converter(const char *encoding);
public:
static Converter *get_converter_from(const char *encoding);
static Converter *get_converter_to(const char *encoding);
};
#endif
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