#include "insets/insetoptarg.h"
#include "support/lstrings.h"
+#include "support/unicode.h"
namespace lyx {
TeXOnePar(Buffer const & buf,
ParagraphList const & paragraphs,
ParagraphList::const_iterator pit,
- odocstream & os, TexRow & texrow,
+ odocstream & ucs4, TexRow & texrow,
OutputParams const & runparams_in,
string const & everypar)
{
if (!lyxrc.language_command_end.empty() &&
previous_language->babel() != doc_language->babel())
{
- os << from_ascii(subst(lyxrc.language_command_end,
+ ucs4 << from_ascii(subst(lyxrc.language_command_end,
"$$lang",
previous_language->babel()))
- << endl;
+ << endl;
texrow.newline();
}
if (lyxrc.language_command_end.empty() ||
language->babel() != doc_language->babel())
{
- os << from_ascii(subst(
+ ucs4 << from_ascii(subst(
lyxrc.language_command_begin,
"$$lang",
language->babel()))
- << endl;
+ << endl;
texrow.newline();
}
}
- if (false) {
- if (bparams.inputenc == "auto" &&
- language->encoding() != previous_language->encoding()) {
- os << "\\inputencoding{"
- << from_ascii(language->encoding()->latexName())
- << "}\n";
- texrow.newline();
- }
+ if (bparams.inputenc == "auto" &&
+ language->encoding() != previous_language->encoding()) {
+ ucs4 << "\\inputencoding{"
+ << from_ascii(language->encoding()->latexName())
+ << "}\n";
+ texrow.newline();
}
+ // We need to output the paragraph to a temporary stream if we
+ // need to change the encoding. Don't do this if the result does
+ // not go to a file but to the builtin source viewer.
+ odocstringstream par_stream;
+ bool const change_encoding = !runparams_in.dryrun &&
+ bparams.inputenc == "auto" &&
+ language->encoding() != doc_language->encoding();
+ // don't trigger the copy ctor because it's private on msvc
+ odocstream & os = *(change_encoding ? &par_stream : &ucs4);
// In an an inset with unlimited length (all in one row),
// don't allow any special options in the paragraph
if (boost::next(pit) != paragraphs.end() &&
lyxerr.debugging(Debug::LATEX))
lyxerr << "TeXOnePar...done " << &*boost::next(pit) << endl;
+
+ if (change_encoding) {
+ lyxerr[Debug::LATEX] << "Converting paragraph to encoding "
+ << language->encoding()->iconvName() << endl;
+ docstring const par = par_stream.str();
+ // Convert the paragraph to the 8bit encoding that we need to
+ // output.
+ std::vector<char> const encoded = lyx::ucs4_to_eightbit(par.c_str(),
+ par.size(), language->encoding()->iconvName());
+ // Interpret this as if it was in the 8 bit encoding of the
+ // document language and convert it back to UCS4. That means
+ // that faked does not contain pure UCS4 anymore, but what
+ // will be written to the output file will be correct, because
+ // the real output stream will do a UCS4 -> document language
+ // encoding conversion.
+ // This is of course a hack, but not a bigger one than mixing
+ // two encodings in one file.
+ // FIXME: Catch iconv conversion errors and display an error
+ // dialog.
+
+ // Here follows an explanation how I (gb) came to the current
+ // solution:
+
+ // codecvt facets are only used by file streams -> OK, maybe
+ // we could use file streams and not generic streams in the
+ // latex() methods? No, that does not work, we use them at
+ // several places to write to string streams.
+ // Next try: Maybe we could do something else than codecvt
+ // in our streams, and add a setEncoding() method? That
+ // does not work unless we rebuild the functionality of file
+ // and string streams, since both odocfstream and
+ // odocstringstream inherit from std::basic_ostream<docstring>
+ // and we can neither add a method to that class nor change
+ // the inheritance of the file and string streams.
+
+ // What might be possible is to encapsulate the real file and
+ // string streams in our own version, and use a homemade
+ // streambuf that would do the encoding conversion and then
+ // forward to the real stream. That would probably work, but
+ // would require far more code and a good understanding of
+ // stream buffers to get it right.
+
+ // Another idea by JMarc is to use a modifier like
+ // os << setencoding("iso-8859-1");
+ // That currently looks like the best idea.
+
+ std::vector<char_type> const faked = lyx::eightbit_to_ucs4(&(encoded[0]),
+ encoded.size(), doc_language->encoding()->iconvName());
+ std::vector<char_type>::const_iterator const end = faked.end();
+ std::vector<char_type>::const_iterator it = faked.begin();
+ for (; it != end; ++it)
+ ucs4.put(*it);
+ }
+
return ++pit;
}
projects / lyx.git / blobdiff