]> git.lyx.org Git - lyx.git/blobdiff - src/output_latex.C
fix compiler warnings about unused parameter
[lyx.git] / src / output_latex.C
index 62807cf5aa1d3c55bd32cd8eb1898b39c7b58ad0..e78773eea6862420ab9a675bdd53bfd8e168901b 100644 (file)
 #include "encoding.h"
 #include "language.h"
 #include "lyxrc.h"
+#include "outputparams.h"
 #include "paragraph.h"
 #include "paragraph_funcs.h"
 #include "ParagraphParameters.h"
 #include "texrow.h"
 #include "vspace.h"
 
+#include "insets/insetbibitem.h"
 #include "insets/insetoptarg.h"
 
 #include "support/lstrings.h"
 
-#ifdef HAVE_LOCALE
-#endif
 
-using lyx::support::subst;
+namespace lyx {
+
+using support::subst;
 
 using std::endl;
-using std::ostream;
 using std::string;
 
-extern string bibitemWidest(Buffer const &);
-
 
 namespace {
 
-ParagraphList::iterator
+ParagraphList::const_iterator
 TeXEnvironment(Buffer const & buf,
               ParagraphList const & paragraphs,
-              ParagraphList::iterator pit,
-              ostream & os, TexRow & texrow,
+              ParagraphList::const_iterator pit,
+              odocstream & os, TexRow & texrow,
               OutputParams const & runparams);
 
-ParagraphList::iterator
+ParagraphList::const_iterator
 TeXOnePar(Buffer const & buf,
          ParagraphList const & paragraphs,
-         ParagraphList::iterator pit,
-         ostream & os, TexRow & texrow,
+         ParagraphList::const_iterator pit,
+         odocstream & os, TexRow & texrow,
          OutputParams const & runparams,
          string const & everypar = string());
 
 
-ParagraphList::iterator
+ParagraphList::const_iterator
 TeXDeeper(Buffer const & buf,
          ParagraphList const & paragraphs,
-         ParagraphList::iterator pit,
-         ostream & os, TexRow & texrow,
+         ParagraphList::const_iterator pit,
+         odocstream & os, TexRow & texrow,
          OutputParams const & runparams)
 {
        lyxerr[Debug::LATEX] << "TeXDeeper...     " << &*pit << endl;
-       ParagraphList::iterator par = pit;
+       ParagraphList::const_iterator par = pit;
 
-       while (par != const_cast<ParagraphList&>(paragraphs).end() &&
+       while (par != paragraphs.end() &&
                     par->params().depth() == pit->params().depth()) {
                if (par->layout()->isEnvironment()) {
                        par = TeXEnvironment(buf, paragraphs, par,
@@ -78,17 +77,21 @@ TeXDeeper(Buffer const & buf,
                                             os, texrow, runparams);
                }
        }
-       lyxerr[Debug::LATEX] << "TeXDeeper...done " << &*par << endl;
+       lyxerr[Debug::LATEX] << "TeXDeeper...done " << endl;
 
        return par;
 }
 
 
-ParagraphList::iterator
+int latexOptArgInsets(Buffer const & buf, Paragraph const & par,
+                     odocstream & os, OutputParams const & runparams, int number);
+
+
+ParagraphList::const_iterator
 TeXEnvironment(Buffer const & buf,
               ParagraphList const & paragraphs,
-              ParagraphList::iterator pit,
-              ostream & os, TexRow & texrow,
+              ParagraphList::const_iterator pit,
+              odocstream & os, TexRow & texrow,
               OutputParams const & runparams)
 {
        lyxerr[Debug::LATEX] << "TeXEnvironment...     " << &*pit << endl;
@@ -100,52 +103,73 @@ TeXEnvironment(Buffer const & buf,
        Language const * language = pit->getParLanguage(bparams);
        Language const * doc_language = bparams.language;
        Language const * previous_language =
-               (pit != const_cast<ParagraphList&>(paragraphs).begin())
+               (pit != paragraphs.begin())
                ? boost::prior(pit)->getParLanguage(bparams)
                : doc_language;
        if (language->babel() != previous_language->babel()) {
 
                if (!lyxrc.language_command_end.empty() &&
                    previous_language->babel() != doc_language->babel()) {
-                       os << subst(lyxrc.language_command_end, "$$lang",
-                                   previous_language->babel())
-                          << endl;
+                       os << from_ascii(subst(
+                               lyxrc.language_command_end,
+                               "$$lang",
+                               previous_language->babel()))
+                          << '\n';
                        texrow.newline();
                }
 
                if (lyxrc.language_command_end.empty() ||
                    language->babel() != doc_language->babel()) {
-                       os << subst(lyxrc.language_command_begin, "$$lang",
-                                   language->babel())
-                          << endl;
+                       os << from_ascii(subst(
+                               lyxrc.language_command_begin,
+                               "$$lang",
+                               language->babel()))
+                          << '\n';
                        texrow.newline();
                }
        }
 
        bool leftindent_open = false;
        if (!pit->params().leftIndent().zero()) {
-               os << "\\begin{LyXParagraphLeftIndent}{" <<
-                       pit->params().leftIndent().asLatexString() << "}\n";
+               os << "\\begin{LyXParagraphLeftIndent}{"
+                  << from_ascii(pit->params().leftIndent().asLatexString())
+                  << "}\n";
                texrow.newline();
                leftindent_open = true;
        }
 
        if (style->isEnvironment()) {
-               os << "\\begin{" << style->latexname() << '}';
+               os << "\\begin{" << from_ascii(style->latexname()) << '}';
+               if (style->optionalargs > 0) {
+                       int ret = latexOptArgInsets(buf, *pit, os, runparams,
+                                                   style->optionalargs);
+                       while (ret > 0) {
+                               texrow.newline();
+                               --ret;
+                       }
+               }
                if (style->latextype == LATEX_LIST_ENVIRONMENT) {
-                       os << "{" << pit->params().labelWidthString() << "}\n";
+                       os << '{'
+                          << pit->params().labelWidthString()
+                          << "}\n";
                } else if (style->labeltype == LABEL_BIBLIO) {
                        // ale970405
-                       os << "{" <<  bibitemWidest(buf) << "}\n";
+                       os << '{' << bibitemWidest(buf) << "}\n";
                } else
-                       os << style->latexparam() << '\n';
+                       os << from_ascii(style->latexparam()) << '\n';
                texrow.newline();
        }
-       ParagraphList::iterator par = pit;
+       ParagraphList::const_iterator par = pit;
        do {
                par = TeXOnePar(buf, paragraphs, par, os, texrow, runparams);
 
-               if (par != const_cast<ParagraphList&>(paragraphs).end() && par->params().depth() > pit->params().depth()) {
+               if (par == paragraphs.end()) {
+                       // Make sure that the last paragraph is
+                       // correctly terminated (because TeXOnePar does
+                       // not add a \n in this case)
+                       os << '\n';
+                       texrow.newline();
+               } else if (par->params().depth() > pit->params().depth()) {
                            if (par->layout()->isParagraph()) {
 
                            // Thinko!
@@ -168,13 +192,13 @@ TeXEnvironment(Buffer const & buf,
                        par = TeXDeeper(buf, paragraphs, par, os, texrow,
                                        runparams);
                }
-       } while (par != const_cast<ParagraphList&>(paragraphs).end()
+       } while (par != paragraphs.end()
                 && par->layout() == pit->layout()
                 && par->params().depth() == pit->params().depth()
                 && par->params().leftIndent() == pit->params().leftIndent());
 
        if (style->isEnvironment()) {
-               os << "\\end{" << style->latexname() << "}\n";
+               os << "\\end{" << from_ascii(style->latexname()) << "}\n";
                texrow.newline();
        }
 
@@ -183,91 +207,65 @@ TeXEnvironment(Buffer const & buf,
                texrow.newline();
        }
 
-       lyxerr[Debug::LATEX] << "TeXEnvironment...done " << &*par << endl;
-       return par;  // ale970302
+       if (par != paragraphs.end() && lyxerr.debugging(Debug::LATEX))
+               lyxerr << "TeXEnvironment...done " << &*par << endl;
+       return par;
 }
 
 
-InsetOptArg * optArgInset(Paragraph const & par)
+int latexOptArgInsets(Buffer const & buf, Paragraph const & par,
+                     odocstream & os, OutputParams const & runparams, int number)
 {
-       // Find the entry.
+       int lines = 0;
+
        InsetList::const_iterator it = par.insetlist.begin();
        InsetList::const_iterator end = par.insetlist.end();
-       for (; it != end; ++it) {
-               InsetOld * ins = it->inset;
-               if (ins->lyxCode() == InsetOld::OPTARG_CODE) {
-                       return static_cast<InsetOptArg *>(ins);
+       for (; it != end && number > 0 ; ++it) {
+               if (it->inset->lyxCode() == InsetBase::OPTARG_CODE) {
+                       InsetOptArg * ins =
+                               static_cast<InsetOptArg *>(it->inset);
+                       lines += ins->latexOptional(buf, os, runparams);
+                       --number;
                }
        }
-       return 0;
+       return lines;
 }
 
 
-ParagraphList::iterator
+ParagraphList::const_iterator
 TeXOnePar(Buffer const & buf,
          ParagraphList const & paragraphs,
-         ParagraphList::iterator pit,
-         ostream & os, TexRow & texrow,
-         OutputParams const & runparams,
+         ParagraphList::const_iterator pit,
+         odocstream & os, TexRow & texrow,
+         OutputParams const & runparams_in,
          string const & everypar)
 {
        lyxerr[Debug::LATEX] << "TeXOnePar...     " << &*pit << " '"
                << everypar << "'" << endl;
        BufferParams const & bparams = buf.params();
-
-       InsetOld const * in = pit->inInset();
-       bool further_blank_line = false;
        LyXLayout_ptr style;
 
-       // well we have to check if we are in an inset with unlimited
-       // length (all in one row) if that is true then we don't allow
-       // any special options in the paragraph and also we don't allow
-       // any environment other then "Standard" to be valid!
-       if (in == 0 || !in->forceDefaultParagraphs(in)) {
+       // In an inset with unlimited length (all in one row),
+       // force layout to default
+       if (!pit->forceDefaultParagraphs())
                style = pit->layout();
-
-               if (pit->params().startOfAppendix()) {
-                       os << "\\appendix\n";
-                       texrow.newline();
-               }
-
-               if (!pit->params().spacing().isDefault()
-                       && (pit == const_cast<ParagraphList&>(paragraphs).begin()
-                           || !boost::prior(pit)->hasSameLayout(*pit)))
-               {
-                       os << pit->params().spacing().writeEnvirBegin() << '\n';
-                       texrow.newline();
-               }
-
-               if (style->isCommand()) {
-                       os << '\n';
-                       texrow.newline();
-               }
-
-               if (pit->params().spaceTop().kind() != VSpace::NONE) {
-                       os << pit->params().spaceTop().asLatexCommand(bparams);
-                       further_blank_line = true;
-               }
-
-               if (further_blank_line) {
-                       os << '\n';
-                       texrow.newline();
-               }
-       } else {
+       else
                style = bparams.getLyXTextClass().defaultLayout();
-       }
+
+       OutputParams runparams = runparams_in;
+       runparams.moving_arg |= style->needprotect;
 
        Language const * language = pit->getParLanguage(bparams);
        Language const * doc_language = bparams.language;
        Language const * previous_language =
-               (pit != const_cast<ParagraphList&>(paragraphs).begin())
+               (pit != paragraphs.begin())
                ? boost::prior(pit)->getParLanguage(bparams)
                : doc_language;
 
        if (language->babel() != previous_language->babel()
            // check if we already put language command in TeXEnvironment()
            && !(style->isEnvironment()
-                && (pit == const_cast<ParagraphList&>(paragraphs).begin() ||
+                && (pit == paragraphs.begin() ||
                     (boost::prior(pit)->layout() != pit->layout() &&
                      boost::prior(pit)->getDepth() <= pit->getDepth())
                     || boost::prior(pit)->getDepth() < pit->getDepth())))
@@ -275,42 +273,81 @@ TeXOnePar(Buffer const & buf,
                if (!lyxrc.language_command_end.empty() &&
                    previous_language->babel() != doc_language->babel())
                {
-                       os << subst(lyxrc.language_command_end, "$$lang",
-                                   previous_language->babel())
-                          << endl;
+                       os << from_ascii(subst(lyxrc.language_command_end,
+                               "$$lang",
+                               previous_language->babel()))
+                          << '\n';
                        texrow.newline();
                }
 
                if (lyxrc.language_command_end.empty() ||
                    language->babel() != doc_language->babel())
                {
-                       os << subst(lyxrc.language_command_begin, "$$lang",
-                                   language->babel())
-                          << endl;
+                       os << from_ascii(subst(
+                               lyxrc.language_command_begin,
+                               "$$lang",
+                               language->babel()))
+                          << '\n';
                        texrow.newline();
                }
        }
 
-       if (bparams.inputenc == "auto" &&
-           language->encoding() != previous_language->encoding()) {
-               os << "\\inputencoding{"
-                  << language->encoding()->LatexName()
-                  << "}\n";
+       LyXFont const outerfont =
+               outerFont(std::distance(paragraphs.begin(), pit),
+                         paragraphs);
+       // This must be identical to basefont in Paragraph::simpleTeXOnePar
+       LyXFont basefont = (pit->beginOfBody() > 0) ?
+                       pit->getLabelFont(bparams, outerfont) :
+                       pit->getLayoutFont(bparams, outerfont);
+       Encoding const & outer_encoding(*(outerfont.language()->encoding()));
+       // FIXME we switch from the outer encoding to the encoding of
+       // this paragraph, since I could not figure out the correct
+       // logic to take the encoding of the previous paragraph into
+       // account. This may result in some unneeded encoding changes.
+       if (switchEncoding(os, bparams, outer_encoding,
+                          *(basefont.language()->encoding()))) {
+               os << '\n';
                texrow.newline();
        }
 
+       // In an inset with unlimited length (all in one row),
+       // don't allow any special options in the paragraph
+       if (!pit->forceDefaultParagraphs()) {
+               if (pit->params().startOfAppendix()) {
+                       os << "\\appendix\n";
+                       texrow.newline();
+               }
+
+               if (!pit->params().spacing().isDefault()
+                       && (pit == paragraphs.begin()
+                           || !boost::prior(pit)->hasSameLayout(*pit)))
+               {
+                       os << from_ascii(pit->params().spacing().writeEnvirBegin())
+                           << '\n';
+                       texrow.newline();
+               }
+
+               if (style->isCommand()) {
+                       os << '\n';
+                       texrow.newline();
+               }
+       }
+
        switch (style->latextype) {
        case LATEX_COMMAND:
-               os << '\\' << style->latexname();
+               os << '\\' << from_ascii(style->latexname());
 
                // Separate handling of optional argument inset.
-               if (style->optionalargs == 1) {
-                       InsetOptArg * it = optArgInset(*pit);
-                       if (it)
-                               it->latexOptional(buf, os, runparams);
+               if (style->optionalargs > 0) {
+                       int ret = latexOptArgInsets(buf, *pit, os, runparams,
+                                                   style->optionalargs);
+                       while (ret > 0) {
+                               texrow.newline();
+                               --ret;
+                       }
                }
                else
-                       os << style->latexparam();
+                       os << from_ascii(style->latexparam());
                break;
        case LATEX_ITEM_ENVIRONMENT:
        case LATEX_LIST_ENVIRONMENT:
@@ -323,9 +360,9 @@ TeXOnePar(Buffer const & buf,
                break;
        }
 
-       os << everypar;
-       bool need_par = pit->simpleTeXOnePar(buf, bparams,
-                                            outerFont(pit, paragraphs),
+       // FIXME UNICODE
+       os << from_utf8(everypar);
+       bool need_par = pit->simpleTeXOnePar(buf, bparams, outerfont,
                                             os, texrow, runparams);
 
        // Make sure that \\par is done with the font of the last
@@ -337,7 +374,6 @@ TeXOnePar(Buffer const & buf,
        // Is this really needed ? (Dekel)
        // We do not need to use to change the font for the last paragraph
        // or for a command.
-       LyXFont const outerfont(outerFont(pit, paragraphs));
 
        LyXFont const font =
                (pit->empty()
@@ -347,31 +383,30 @@ TeXOnePar(Buffer const & buf,
        bool is_command = style->isCommand();
 
        if (style->resfont.size() != font.size()
-           && boost::next(pit) != const_cast<ParagraphList&>(paragraphs).end()
+           && boost::next(pit) != paragraphs.end()
            && !is_command) {
                if (!need_par)
                        os << '{';
-               os << "\\" << font.latexSize() << " \\par}";
+               os << "\\" << from_ascii(font.latexSize()) << " \\par}";
        } else if (need_par) {
                os << "\\par}";
        } else if (is_command)
                os << '}';
 
+       bool pending_newline = false;
        switch (style->latextype) {
        case LATEX_ITEM_ENVIRONMENT:
        case LATEX_LIST_ENVIRONMENT:
-               if (boost::next(pit) != const_cast<ParagraphList&>(paragraphs).end()
-                   && (pit->params().depth() < boost::next(pit)->params().depth())) {
-                       os << '\n';
-                       texrow.newline();
-               }
+               if (boost::next(pit) != paragraphs.end()
+                   && (pit->params().depth() < boost::next(pit)->params().depth()))
+                       pending_newline = true;
                break;
        case LATEX_ENVIRONMENT: {
                // if its the last paragraph of the current environment
                // skip it otherwise fall through
-               ParagraphList::iterator next = boost::next(pit);
+               ParagraphList::const_iterator next = boost::next(pit);
 
-               if (next != const_cast<ParagraphList&>(paragraphs).end()
+               if (next != paragraphs.end()
                    && (next->layout() != pit->layout()
                        || next->params().depth() != pit->params().depth()))
                        break;
@@ -380,70 +415,81 @@ TeXOnePar(Buffer const & buf,
                // fall through possible
        default:
                // we don't need it for the last paragraph!!!
-               if (boost::next(pit) != const_cast<ParagraphList&>(paragraphs).end()) {
-                       os << '\n';
-                       texrow.newline();
-               }
+               if (boost::next(pit) != paragraphs.end())
+                       pending_newline = true;
        }
 
-       if (in == 0 || !in->forceDefaultParagraphs(in)) {
-               further_blank_line = false;
-
-               if (pit->params().spaceBottom().kind() != VSpace::NONE) {
-                       os << pit->params().spaceBottom().asLatexCommand(bparams);
-                       further_blank_line = true;
-               }
-
-               if (further_blank_line) {
-                       os << '\n';
-                       texrow.newline();
-               }
-
+       if (!pit->forceDefaultParagraphs()) {
                if (!pit->params().spacing().isDefault()
-                       && (boost::next(pit) == const_cast<ParagraphList&>(paragraphs).end()
+                       && (boost::next(pit) == paragraphs.end()
                            || !boost::next(pit)->hasSameLayout(*pit)))
                {
-                       os << pit->params().spacing().writeEnvirEnd() << '\n';
-                       texrow.newline();
+                       if (pending_newline) {
+                               os << '\n';
+                               texrow.newline();
+                       }
+                       os << from_ascii(pit->params().spacing().writeEnvirEnd());
+                       pending_newline = true;
                }
        }
 
-       // we don't need it for the last paragraph!!!
-       if (boost::next(pit) != const_cast<ParagraphList&>(paragraphs).end()) {
-               os << '\n';
-               texrow.newline();
-       } else {
+       if (boost::next(pit) == paragraphs.end()
+           && language->babel() != doc_language->babel()) {
                // Since \selectlanguage write the language to the aux file,
                // we need to reset the language at the end of footnote or
                // float.
 
-               if (language->babel() != doc_language->babel()) {
-                       if (lyxrc.language_command_end.empty())
-                               os << subst(lyxrc.language_command_begin,
-                                           "$$lang",
-                                           doc_language->babel())
-                                  << endl;
-                       else
-                               os << subst(lyxrc.language_command_end,
-                                           "$$lang",
-                                           language->babel())
-                                  << endl;
+               if (pending_newline) {
+                       os << '\n';
                        texrow.newline();
                }
+               if (lyxrc.language_command_end.empty())
+                       os << from_ascii(subst(
+                               lyxrc.language_command_begin,
+                               "$$lang",
+                               doc_language->babel()));
+               else
+                       os << from_ascii(subst(
+                               lyxrc.language_command_end,
+                               "$$lang",
+                               language->babel()));
+               pending_newline = true;
+       }
+
+       // FIXME we switch from the encoding of this paragraph to the
+       // outer encoding, since I could not figure out the correct logic
+       // to take the encoding of the next paragraph into account.
+       // This may result in some unneeded encoding changes.
+       basefont = pit->getLayoutFont(bparams, outerfont);
+       switchEncoding(os, bparams, *(basefont.language()->encoding()),
+                      outer_encoding);
+       if (pending_newline) {
+               os << '\n';
+               texrow.newline();
+       }
+
+       // we don't need it for the last paragraph!!!
+       // Note from JMarc: we will re-add a \n explicitely in
+       // TeXEnvironment, because it is needed in this case
+       if (boost::next(pit) != paragraphs.end()) {
+               os << '\n';
+               texrow.newline();
        }
 
-       lyxerr[Debug::LATEX] << "TeXOnePar...done " << &*boost::next(pit) << endl;
+       if (boost::next(pit) != paragraphs.end() &&
+           lyxerr.debugging(Debug::LATEX))
+               lyxerr << "TeXOnePar...done " << &*boost::next(pit) << endl;
+
        return ++pit;
 }
 
-} //anon namespace
+} // anon namespace
+
 
-//
-// LaTeX all paragraphs from par to endpar, if endpar == 0 then to the end
-//
+// LaTeX all paragraphs
 void latexParagraphs(Buffer const & buf,
                     ParagraphList const & paragraphs,
-                    ostream & os,
+                    odocstream & os,
                     TexRow & texrow,
                     OutputParams const & runparams,
                     string const & everypar)
@@ -451,40 +497,52 @@ void latexParagraphs(Buffer const & buf,
        bool was_title = false;
        bool already_title = false;
        LyXTextClass const & tclass = buf.params().getLyXTextClass();
-       ParagraphList::iterator par = const_cast<ParagraphList&>(paragraphs).begin();
-       ParagraphList::iterator endpar = const_cast<ParagraphList&>(paragraphs).end();
+       ParagraphList::const_iterator par = paragraphs.begin();
+       ParagraphList::const_iterator endpar = paragraphs.end();
+
+       BOOST_ASSERT(runparams.par_begin <= runparams.par_end);
+       // if only part of the paragraphs will be outputed
+       if (runparams.par_begin !=  runparams.par_end) {
+               par = boost::next(paragraphs.begin(), runparams.par_begin);
+               endpar = boost::next(paragraphs.begin(), runparams.par_end);
+               // runparams will be passed to nested paragraphs, so
+               // we have to reset the range parameters.
+               const_cast<OutputParams&>(runparams).par_begin = 0;
+               const_cast<OutputParams&>(runparams).par_end = 0;
+       }
 
        // if only_body
        while (par != endpar) {
-               InsetOld * in = par->inInset();
+               ParagraphList::const_iterator lastpar = par;
                // well we have to check if we are in an inset with unlimited
                // length (all in one row) if that is true then we don't allow
                // any special options in the paragraph and also we don't allow
-               // any environment other then "Standard" to be valid!
-               if (in == 0 || !in->forceDefaultParagraphs(in)) {
+               // any environment other than the default layout of the
+               // text class to be valid!
+               if (!par->forceDefaultParagraphs()) {
                        LyXLayout_ptr const & layout = par->layout();
 
                        if (layout->intitle) {
                                if (already_title) {
-                                       lyxerr <<"Error in latexParagraphs: You"
+                                       lyxerr << "Error in latexParagraphs: You"
                                                " should not mix title layouts"
                                                " with normal ones." << endl;
                                } else if (!was_title) {
                                        was_title = true;
                                        if (tclass.titletype() == TITLE_ENVIRONMENT) {
                                                os << "\\begin{"
-                                                   << tclass.titlename()
+                                                   << from_ascii(tclass.titlename())
                                                    << "}\n";
                                                texrow.newline();
                                        }
                                }
                        } else if (was_title && !already_title) {
                                if (tclass.titletype() == TITLE_ENVIRONMENT) {
-                                       os << "\\end{" << tclass.titlename()
+                                       os << "\\end{" << from_ascii(tclass.titlename())
                                            << "}\n";
                                }
                                else {
-                                       os << "\\" << tclass.titlename()
+                                       os << "\\" << from_ascii(tclass.titlename())
                                            << "\n";
                                }
                                texrow.newline();
@@ -494,31 +552,58 @@ void latexParagraphs(Buffer const & buf,
 
                        if (layout->is_environment) {
                                par = TeXOnePar(buf, paragraphs, par, os, texrow,
-                                               runparams, everypar);
+                                               runparams, everypar);
                        } else if (layout->isEnvironment() ||
-                               !par->params().leftIndent().zero())
-                       {
+                                  !par->params().leftIndent().zero()) {
                                par = TeXEnvironment(buf, paragraphs, par, os,
                                                     texrow, runparams);
                        } else {
                                par = TeXOnePar(buf, paragraphs, par, os, texrow,
-                                               runparams, everypar);
+                                               runparams, everypar);
                        }
                } else {
                        par = TeXOnePar(buf, paragraphs, par, os, texrow,
-                                       runparams, everypar);
+                                       runparams, everypar);
                }
+               if (std::distance(lastpar, par) >= std::distance(lastpar, endpar))
+                       break;
        }
        // It might be that we only have a title in this document
        if (was_title && !already_title) {
                if (tclass.titletype() == TITLE_ENVIRONMENT) {
-                       os << "\\end{" << tclass.titlename()
+                       os << "\\end{" << from_ascii(tclass.titlename())
                            << "}\n";
                }
                else {
-                       os << "\\" << tclass.titlename()
+                       os << "\\" << from_ascii(tclass.titlename())
                            << "\n";
                                }
                texrow.newline();
        }
 }
+
+
+int switchEncoding(odocstream & os, BufferParams const & bparams,
+                   Encoding const & oldEnc, Encoding const & newEnc)
+{
+       // FIXME thailatex does not support the inputenc package, so we
+       // ignore switches from/to tis620-0 encoding here. This does of
+       // course only work as long as the non-thai text contains ASCII
+       // only, but it is the best we can do.
+       if ((bparams.inputenc == "auto" || bparams.inputenc == "default") &&
+           oldEnc.name() != newEnc.name() &&
+           oldEnc.name() != "tis620-0" && newEnc.name() != "tis620-0") {
+               lyxerr[Debug::LATEX] << "Changing LaTeX encoding from "
+                                    << oldEnc.name() << " to "
+                                    << newEnc.name() << endl;
+               os << setEncoding(newEnc.iconvName());
+               if (bparams.inputenc != "default") {
+                       docstring const inputenc(from_ascii(newEnc.latexName()));
+                       os << "\\inputencoding{" << inputenc << '}';
+                       return 16 + inputenc.length();
+               }
+       }
+       return 0;
+}
+
+} // namespace lyx