/usr/include/cxxtools/iconvstream.h is in libcxxtools-dev 2.2.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2003 Tommi Maekitalo
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* As a special exception, you may use this file as part of a free
* software library without restriction. Specifically, if other files
* instantiate templates or use macros or inline functions from this
* file, or you compile this file and link it with other files to
* produce an executable, this file does not by itself cause the
* resulting executable to be covered by the GNU General Public
* License. This exception does not however invalidate any other
* reasons why the executable file might be covered by the GNU Library
* General Public License.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef CXXTOOLS_ICONVSTREAM_H
#define CXXTOOLS_ICONVSTREAM_H
#include <iostream>
#include <stdexcept>
#include "iconvwrap.h"
namespace cxxtools
{
class iconv_error : public std::runtime_error
{
private:
mutable std::string msg;
size_t pos;
public:
explicit iconv_error(size_t pos);
virtual size_t position() const throw();
virtual const char *what() const throw();
virtual ~iconv_error() throw();
};
/**
std::streambuf-Interface for iconv(3) and related.
iconv converts charactersets.
*/
class iconvstreambuf : public std::streambuf
{
public:
/** Behaviour on iconv error. */
typedef enum {
/** Old behaviour, just send EOF. */
mode_eof,
/** Throw iconv_error. */
mode_throw,
/** Skip invalid characters. */
mode_skip,
mode_default = mode_eof
} mode_t;
private:
std::ostream* sink;
iconvwrap conv;
char buffer[256];
mode_t mode;
size_t pos;
public:
iconvstreambuf()
: sink(0), mode(mode_default), pos(0)
{
setg(buffer, buffer, buffer + (sizeof(buffer) - 1));
setp(buffer, buffer + (sizeof(buffer) - 1));
}
~iconvstreambuf()
{ close(); }
iconvstreambuf* open(std::ostream& sink_,
const char* tocode, const char* fromcode);
iconvstreambuf* open(std::ostream& sink_,
const char* tocode, const char* fromcode, mode_t mode_);
iconvstreambuf* close() throw();
/// overloaded from std::streambuf
int_type overflow(int_type c);
/// overloaded from std::streambuf
int_type underflow();
/// overloaded from std::streambuf
int sync();
/** overloaded from std::streambuf, for input returned value represents
* number of bytes succesfully converted (does not count skipped bytes).
*/
virtual std::streampos seekoff(std::streamoff off,
std::ios_base::seekdir way, std::ios_base::openmode which);
/** overloaded from std::streambuf, for input returned value represents
* number of bytes succesfully converted (does not count skipped bytes).
*/
virtual std::streampos seekpos(std::streampos sp,
std::ios_base::openmode which);
};
/**
std::ostream-Interface for iconv(3) and related.
iconv converts charactersets.
To perform a character set conversion from one characterset to
another, instantiate a iconvstream with a std::ostream as a sink.
Write the data to the iconvstream and the converted stream is
written to the sink.
example (unix2win-filter):
\code
int main(int argc, char* argv[])
{
cxxtools::iconvstream out(std::cout, "LATIN1", "WINDOWS-1251");
// copy input to output:
out << std::cin.rdbuf();
}
\endcode
*/
class iconvstream : public std::ostream
{
iconvstreambuf streambuf;
public:
iconvstream(std::ostream& sink, const char* tocode, const char* fromcode)
: std::ostream(0)
{
init(&streambuf);
open(sink, tocode, fromcode);
}
iconvstream(std::ostream& sink, const char* tocode, const char* fromcode,
iconvstreambuf::mode_t mode)
: std::ostream(0)
{
init(&streambuf);
open(sink, tocode, fromcode, mode);
}
iconvstream()
: std::ostream(0)
{
init(&streambuf);
}
void open(std::ostream& sink_,
const char* tocode, const char* fromcode);
void open(std::ostream& sink_,
const char* tocode, const char* fromcode,
iconvstreambuf::mode_t mode_);
void close() throw()
{ streambuf.close(); }
};
}
#endif // CXXTOOLS_ICONVSTREAM_H
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