main page Faq Report bug Feature request Download Doc C++ Modules Namespaces Classes Alphabetical Compound List Files Members Files Members Examples Related Page ximol/codecvt.cpp Go to the documentation of this file. /*****************************************************************************\ * * * library XiMoL * * Copyright (C) 2002, 2003, 2004 Florent Tournois * * * * 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. * * * * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * * \*****************************************************************************/ //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ /** \file \brief Facet access (implementation). \author Tournois Florent \version 1.0 $Id: codecvt.cpp,v 1.6 2004/02/25 18:58:39 tournois Exp $ $Log: codecvt.cpp,v $ Revision 1.6 2004/02/25 18:58:39 tournois imporve the gcc compatibility. Revision 1.5 2004/02/22 10:27:32 tournois Add some doc. Revision 1.4 2004/02/22 09:54:19 tournois Change years on the copyright. Revision 1.3 2003/11/16 13:25:25 tournois Change the error to use wide string. Change the translation to use wide string. Revision 1.2 2003/11/02 19:23:01 tournois Go to the boost coding standard. Change all name to lower case. Revision 1.1 2003/10/25 18:20:32 hfp XiMoL now provides a own codecvt (interface) based on standard. Hides use of iconv-library as implementation detail. Revision 1.6 2003/10/25 13:53:39 hfp review and separation */ //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ #include <ximol/codecvt.hpp> #include <ximol/encoders/error.hpp> #include <ximol/translation.hpp> #include <ximol/macros.hpp> #include <iconv.h> XIMOL_BEGIN_NAMESPACE /////////////////////////////////////////////////////////////////////////////// // nested types (private) /////////////////////////////////////////////////////////////////////////////// struct codecvt_state { // not exported iconv_t conv_in_out; iconv_t conv_out_in; }; /////////////////////////////////////////////////////////////////////////////// // constructor(s) & destructor /////////////////////////////////////////////////////////////////////////////// codecvt::codecvt(const ::std::string& encoding_name, size_t refs) : ::std::codecvt<xchar_t, char, mbstate_t>(refs) , p_internal_state_(NULL) // exception safety { p_internal_state_ = new codecvt_state; // should be created before create_encoding create_encoding(encoding_name); } /////////////////////////////////////////////////////////////////////////////// codecvt::~codecvt() { delete_encoding(); delete p_internal_state_; // should be delete after delete_encoding } /////////////////////////////////////////////////////////////////////////////// // methods (public) /////////////////////////////////////////////////////////////////////////////// void codecvt::create_encoding(const ::std::string& encoding_name) { ::std::string const strIntern(sizeof(xchar_t) == 2 ? "UCS-2-INTERNAL" : "UCS-4-INTERNAL"); p_internal_state_->conv_in_out = iconv_open(encoding_name.c_str(), strIntern.c_str()); if (p_internal_state_->conv_in_out == (iconv_t)-1) XIMOL_ENCODERS_THROW << _(L"Encoding '%o' not found. ", encoding_name) << XIMOL_ENCODERS_AS_ERROR; p_internal_state_->conv_out_in = iconv_open(strIntern.c_str(), encoding_name.c_str()); if (p_internal_state_->conv_out_in == (iconv_t)-1) XIMOL_ENCODERS_THROW << _(L"Encoding '%o' not found. ", encoding_name) << XIMOL_ENCODERS_AS_ERROR; } /////////////////////////////////////////////////////////////////////////////// void codecvt::delete_encoding() { iconv_close(p_internal_state_->conv_in_out); iconv_close(p_internal_state_->conv_out_in); } /////////////////////////////////////////////////////////////////////////////// codecvt::result codecvt::do_out(state_type& state, const intern_type* from, const intern_type* from_end, const intern_type*& from_next, extern_type* to, extern_type* to_limit, extern_type*& to_next) const { to_next=to; from_next=from; size_t inbuf=from_end-from_next; inbuf*=sizeof(intern_type); size_t outbuf=to_limit-to_next; outbuf*=sizeof(extern_type); size_t init_inbuf=inbuf, init_outbuf=outbuf; typedef const char** from_next_type; size_t result = iconv(p_internal_state_->conv_in_out,(from_next_type)(&from_next),&inbuf,(char**)(&to_next),&outbuf); if ( (inbuf==init_inbuf) ||(outbuf==init_outbuf)) { from_next = from; to_next = to; return partial; } if (result==(size_t)(-1)) { from_next = from; to_next = to; if (errno==EINVAL) return partial; if (errno==EILSEQ) return error; if (errno==E2BIG) return partial; return error; } return ok; } /////////////////////////////////////////////////////////////////////////////// codecvt::result codecvt::do_in(state_type& state, const extern_type* from, const extern_type* from_end, const extern_type*& from_next, intern_type* to, intern_type* to_limit, intern_type*& to_next) const { to_next=to; from_next=from; size_t inbuf=from_end-from_next; inbuf*=sizeof(extern_type); size_t outbuf=to_limit-to_next; outbuf*=sizeof(intern_type); size_t init_inbuf=inbuf, init_outbuf=outbuf; typedef const char** from_next_type; size_t result = iconv(p_internal_state_->conv_out_in,(from_next_type)(&from_next),&inbuf,(char**)(&to_next),&outbuf); if ( (inbuf==init_inbuf) ||(outbuf==init_outbuf)) { from_next = from; to_next = to; return partial; } if (result==(size_t)(-1)) { from_next = from; to_next = to; if (errno==EINVAL) return partial; if (errno==EILSEQ) return error; if (errno==E2BIG) return partial; return error; } return ok; } /////////////////////////////////////////////////////////////////////////////// codecvt::result codecvt::do_unshift(state_type& state, extern_type* to, extern_type* to_limit, extern_type*& to_next) const { to_next = to; return noconv; } /////////////////////////////////////////////////////////////////////////////// int codecvt::do_encoding() const throw() { return 0; } /////////////////////////////////////////////////////////////////////////////// bool codecvt::do_always_noconv() const throw() { return false; } /////////////////////////////////////////////////////////////////////////////// int codecvt::do_length(const state_type& state, const extern_type* from, const extern_type* end, size_t max) const { return (int)XIMOL_MIN((size_t) (end - from), max); } /////////////////////////////////////////////////////////////////////////////// int codecvt::do_max_length() const throw() { return 6; } /////////////////////////////////////////////////////////////////////////////// XIMOL_END_NAMESPACE

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