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7a60c96dfa
This bug in MSVC 10 was fixed at e948caf6, but the workaround belongs to
strfwd.h.
Thanks Vincent and Georg.
110 lines
3.1 KiB
C++
110 lines
3.1 KiB
C++
// -*- C++ -*-
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/**
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* \file docstream.h
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Georg Baum
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*
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* Full author contact details are available in file CREDITS.
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*/
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#ifndef LYX_DOCSTREAM_H
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#define LYX_DOCSTREAM_H
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#include "support/docstring.h"
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#include <fstream>
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#include <sstream>
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namespace lyx {
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class iconv_codecvt_facet_exception : public std::exception {
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public:
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virtual ~iconv_codecvt_facet_exception() throw() {}
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virtual const char * what() const throw();
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};
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/// Base class for UCS4 input streams
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typedef std::basic_istream<char_type> idocstream;
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/** Base class for UCS4 output streams.
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If you want to output a single UCS4 character, use \code
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os.put(c);
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\endcode, not \code
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os << c;
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\endcode . The latter will not output the character, but the code point
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as number if USE_WCHAR_T is not defined. This is because we can't overload
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operator<< (our character type is not always a real type but sometimes a
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typedef). Narrow characters of type char can be output as usual.
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*/
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typedef std::basic_ostream<char_type> odocstream;
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/// File stream for reading UTF8-encoded files with automatic conversion to
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/// UCS4.
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class ifdocstream : public std::basic_ifstream<char_type> {
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typedef std::basic_ifstream<char_type> base;
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public:
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ifdocstream();
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explicit ifdocstream(const char* s,
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std::ios_base::openmode mode = std::ios_base::in,
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std::string const & encoding = "UTF-8");
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~ifdocstream() {}
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};
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/// File stream for writing files in 8bit encoding \p encoding with automatic
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/// conversion from UCS4.
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class ofdocstream : public std::basic_ofstream<char_type> {
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typedef std::basic_ofstream<char_type> base;
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public:
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ofdocstream();
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explicit ofdocstream(const char* s,
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std::ios_base::openmode mode = std::ios_base::out|std::ios_base::trunc,
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std::string const & encoding = "UTF-8");
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~ofdocstream() {}
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///
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void reset(std::string const & encoding);
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};
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/// UCS4 input stringstream
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typedef std::basic_istringstream<char_type> idocstringstream;
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/// UCS4 output manipulator
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typedef odocstream & (*odocstream_manip)(odocstream &);
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/// Helper struct for changing stream encoding
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struct SetEnc {
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/**
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* It is important that this constructor is explicit.
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* Otherwise the attempt to output a std::string to an odocstream
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* would compile, but cause a (probably failing) encoding change
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* instead of string output (we do not define
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* operator<<(odocstream &, std::string) since we want to avoid
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* outputting strings with unspecified encoding)
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*/
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explicit SetEnc(std::string const & e) : encoding(e) {}
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std::string encoding;
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};
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/// Helper function for changing stream encoding
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SetEnc setEncoding(std::string const & encoding);
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/** Change the encoding of \p os to \p e.encoding.
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\p e.encoding must be a valid iconv name of an 8bit encoding.
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This does nothing if the stream is not a file stream, since only
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file streams do have an associated 8bit encoding.
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Usage: \code
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os << setEncoding("ISO-8859-1");
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\endcode
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*/
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odocstream & operator<<(odocstream & os, SetEnc e);
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idocstream & operator<<(idocstream & os, SetEnc e);
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}
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#endif
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