]> git.lyx.org Git - lyx.git/blobdiff - src/bufferparams.C
Small formatting and comment cleanup.
[lyx.git] / src / bufferparams.C
index 8c4bed9e433e08e1ec6464fef648953488fbdd51..dff424a9af00d7cb4d0b5cae3fedd22f7e08c9f9 100644 (file)
@@ -26,6 +26,7 @@
 #include "language.h"
 #include "LaTeXFeatures.h"
 #include "LColor.h"
+#include "lyxfont.h"
 #include "lyxlex.h"
 #include "lyxrc.h"
 #include "lyxtextclasslist.h"
 
 #include <sstream>
 
-namespace support = lyx::support;
-using lyx::support::bformat;
-using lyx::support::rtrim;
-using lyx::support::tokenPos;
+
+namespace lyx {
+
+using support::bformat;
+using support::rtrim;
+using support::tokenPos;
 
 using std::endl;
 using std::string;
@@ -57,7 +60,7 @@ using std::ostream;
 using std::ostringstream;
 using std::pair;
 
-namespace biblio = lyx::biblio;
+namespace Alert = lyx::frontend::Alert;
 
 
 // Local translators
@@ -171,23 +174,22 @@ SidesTranslator const & sidestranslator()
 }
 
 
-
-// AMS
-typedef Translator<int, BufferParams::AMS> AMSTranslator;
+// LaTeX packages
+typedef Translator<int, BufferParams::Package> PackageTranslator;
 
 
-AMSTranslator const init_amstranslator()
+PackageTranslator const init_packagetranslator()
 {
-       AMSTranslator translator(0, BufferParams::AMS_OFF);
-       translator.addPair(1, BufferParams::AMS_AUTO);
-       translator.addPair(2, BufferParams::AMS_ON);
+       PackageTranslator translator(0, BufferParams::package_off);
+       translator.addPair(1, BufferParams::package_auto);
+       translator.addPair(2, BufferParams::package_on);
        return translator;
 }
 
 
-AMSTranslator const & amstranslator()
+PackageTranslator const & packagetranslator()
 {
-       static AMSTranslator translator = init_amstranslator();
+       static PackageTranslator translator = init_packagetranslator();
        return translator;
 }
 
@@ -259,7 +261,8 @@ BufferParams::Impl::Impl()
        : defskip(VSpace::MEDSKIP)
 {
        // set initial author
-       authorlist.record(Author(lyxrc.user_name, lyxrc.user_email));
+       // FIXME UNICODE
+       authorlist.record(Author(from_utf8(lyxrc.user_name), from_utf8(lyxrc.user_email)));
 }
 
 
@@ -283,7 +286,7 @@ BufferParams::BufferParams()
          // true in the returned pair, then `second' is the textclass
          // number; if it is false, second is 0. In both cases, second
          // is what we want.
-       textclass(textclasslist.NumberOfClass("article").second),
+       textclass(textclasslist.numberOfClass("article").second),
        pimpl_(new Impl)
 {
        paragraph_separation = PARSEP_INDENT;
@@ -294,15 +297,23 @@ BufferParams::BufferParams()
        papersize = PAPER_DEFAULT;
        orientation = ORIENTATION_PORTRAIT;
        use_geometry = false;
-       use_amsmath = AMS_AUTO;
+       use_amsmath = package_auto;
+       use_esint = package_auto;
        cite_engine = biblio::ENGINE_BASIC;
        use_bibtopic = false;
-       tracking_changes = false;
-       output_changes = false;
+       trackChanges = false;
+       outputChanges = false;
        secnumdepth = 3;
        tocdepth = 3;
        language = default_language;
-       fonts = "default";
+       fontsRoman = "default";
+       fontsSans = "default";
+       fontsTypewriter = "default";
+       fontsDefaultFamily = "default";
+       fontsSC = false;
+       fontsOSF = false;
+       fontsSansScale = 100;
+       fontsTypewriterScale = 100;
        inputenc = "auto";
        graphicsDriver = "default";
        sides = LyXTextClass::OneSide;
@@ -402,19 +413,28 @@ string const BufferParams::readToken(LyXLex & lex, string const & token)
                lex.next();
                string const classname = lex.getString();
                pair<bool, lyx::textclass_type> pp =
-                       textclasslist.NumberOfClass(classname);
+                       textclasslist.numberOfClass(classname);
                if (pp.first) {
                        textclass = pp.second;
                } else {
-                       textclass = 0;
-                       return classname;
+                       // if text class does not exist, try to load it from filepath
+                       pp = textclasslist.addTextClass(classname, filepath);
+                       if (pp.first) {
+                               textclass = pp.second;
+                       } else {
+                               textclass = 0;
+                               return classname;
+                       }
                }
+               // FIXME: isTeXClassAvailable will try to load the layout file, but will
+               // fail because of the lack of path info. Warnings will be given although
+               // the layout file will be correctly loaded later.
                if (!getLyXTextClass().isTeXClassAvailable()) {
-                       string const msg =
+                       docstring const msg =
                                bformat(_("The document uses a missing "
-                               "TeX class \"%1$s\".\n"), classname);
+                                                      "TeX class \"%1$s\".\n"), from_utf8(classname));
                        Alert::warning(_("Document class not available"),
-                                      msg + _("LyX will not be able to produce output."));
+                                      msg + _("LyX will not be able to produce output."));
                }
        } else if (token == "\\begin_preamble") {
                readPreamble(lex);
@@ -427,8 +447,22 @@ string const BufferParams::readToken(LyXLex & lex, string const & token)
                lex >> inputenc;
        } else if (token == "\\graphics") {
                readGraphicsDriver(lex);
-       } else if (token == "\\fontscheme") {
-               lex >> fonts;
+       } else if (token == "\\font_roman") {
+               lex >> fontsRoman;
+       } else if (token == "\\font_sans") {
+               lex >> fontsSans;
+       } else if (token == "\\font_typewriter") {
+               lex >> fontsTypewriter;
+       } else if (token == "\\font_default_family") {
+               lex >> fontsDefaultFamily;
+       } else if (token == "\\font_sc") {
+               lex >> fontsSC;
+       } else if (token == "\\font_osf") {
+               lex >> fontsOSF;
+       } else if (token == "\\font_sf_scale") {
+               lex >> fontsSansScale;
+       } else if (token == "\\font_tt_scale") {
+               lex >> fontsTypewriterScale;
        } else if (token == "\\paragraph_separation") {
                string parsep;
                lex >> parsep;
@@ -449,7 +483,11 @@ string const BufferParams::readToken(LyXLex & lex, string const & token)
        } else if (token == "\\use_amsmath") {
                int use_ams;
                lex >> use_ams;
-               use_amsmath = amstranslator().find(use_ams);
+               use_amsmath = packagetranslator().find(use_ams);
+       } else if (token == "\\use_esint") {
+               int useesint;
+               lex >> useesint;
+               use_esint = packagetranslator().find(useesint);
        } else if (token == "\\cite_engine") {
                string engine;
                lex >> engine;
@@ -457,12 +495,12 @@ string const BufferParams::readToken(LyXLex & lex, string const & token)
        } else if (token == "\\use_bibtopic") {
                lex >> use_bibtopic;
        } else if (token == "\\tracking_changes") {
-               lex >> tracking_changes;
+               lex >> trackChanges;
        } else if (token == "\\output_changes") {
-               lex >> output_changes;
+               lex >> outputChanges;
        } else if (token == "\\branch") {
                lex.next();
-               string branch = lex.getString();
+               docstring branch = lex.getDocString();
                branchlist().add(branch);
                while (true) {
                        lex.next();
@@ -484,7 +522,8 @@ string const BufferParams::readToken(LyXLex & lex, string const & token)
                                // Update also the LColor table:
                                if (color == "none")
                                        color = lcolor.getX11Name(LColor::background);
-                               lcolor.setColor(branch, color);
+                               // FIXME UNICODE
+                               lcolor.setColor(to_utf8(branch), color);
 
                        }
                }
@@ -578,7 +617,14 @@ void BufferParams::writeFile(ostream & os) const
        if (language != ignore_language)
                os << "\\language " << language->lang() << '\n';
        os << "\\inputencoding " << inputenc
-          << "\n\\fontscheme " << fonts
+          << "\n\\font_roman " << fontsRoman
+          << "\n\\font_sans " << fontsSans
+          << "\n\\font_typewriter " << fontsTypewriter
+          << "\n\\font_default_family " << fontsDefaultFamily
+          << "\n\\font_sc " << convert<string>(fontsSC)
+          << "\n\\font_osf " << convert<string>(fontsOSF)
+          << "\n\\font_sf_scale " << fontsSansScale
+          << "\n\\font_tt_scale " << fontsTypewriterScale
           << "\n\\graphics " << graphicsDriver << '\n';
 
        if (!float_placement.empty()) {
@@ -591,6 +637,7 @@ void BufferParams::writeFile(ostream & os) const
        os << "\\papersize " << string_papersize[papersize]
           << "\n\\use_geometry " << convert<string>(use_geometry)
           << "\n\\use_amsmath " << use_amsmath
+          << "\n\\use_esint " << use_esint
           << "\n\\cite_engine " << citeenginetranslator().find(cite_engine)
           << "\n\\use_bibtopic " << convert<string>(use_bibtopic)
           << "\n\\paperorientation " << string_orientation[orientation]
@@ -599,9 +646,9 @@ void BufferParams::writeFile(ostream & os) const
        BranchList::const_iterator it = branchlist().begin();
        BranchList::const_iterator end = branchlist().end();
        for (; it != end; ++it) {
-               os << "\\branch " << it->getBranch()
+               os << "\\branch " << to_utf8(it->getBranch())
                   << "\n\\selected " << it->getSelected()
-                  << "\n\\color " << it->getColor()
+                  << "\n\\color " << lyx::X11hexname(it->getColor())
                   << "\n\\end_branch"
                   << "\n";
        }
@@ -652,27 +699,26 @@ void BufferParams::writeFile(ostream & os) const
                                   << user_defined_bullet(i).getSize() << "\n";
                        }
                        else {
+                               // FIXME UNICODE
                                os << "\\bulletLaTeX " << i << " \""
-                                  << user_defined_bullet(i).getText()
+                                  << lyx::to_ascii(user_defined_bullet(i).getText())
                                   << "\"\n";
                        }
                }
        }
 
-       os << "\\tracking_changes " << convert<string>(tracking_changes) << "\n";
-       os << "\\output_changes " << convert<string>(output_changes) << "\n";
+       os << "\\tracking_changes " << convert<string>(trackChanges) << "\n";
+       os << "\\output_changes " << convert<string>(outputChanges) << "\n";
 
-       if (tracking_changes) {
-               AuthorList::Authors::const_iterator it = pimpl_->authorlist.begin();
-               AuthorList::Authors::const_iterator end = pimpl_->authorlist.end();
-               for (; it != end; ++it) {
-                       os << "\\author " << it->second << "\n";
-               }
+       AuthorList::Authors::const_iterator a_it = pimpl_->authorlist.begin();
+       AuthorList::Authors::const_iterator a_end = pimpl_->authorlist.end();
+       for (; a_it != a_end; ++a_it) {
+               os << "\\author " << a_it->second << "\n";
        }
 }
 
 
-bool BufferParams::writeLaTeX(ostream & os, LaTeXFeatures & features,
+bool BufferParams::writeLaTeX(odocstream & os, LaTeXFeatures & features,
                              TexRow & texrow) const
 {
        os << "\\documentclass";
@@ -688,10 +734,10 @@ bool BufferParams::writeLaTeX(ostream & os, LaTeXFeatures & features,
        }
 
        // custom, A3, B3 and B4 paper sizes need geometry
-       bool nonstandard_papersize = (papersize == PAPER_B3) ||
-                                    (papersize == PAPER_B4) ||
-                                    (papersize == PAPER_A3) ||
-                                    (papersize == PAPER_CUSTOM);
+       bool nonstandard_papersize = papersize == PAPER_B3 
+               || papersize == PAPER_B4
+               || papersize == PAPER_A3
+               || papersize == PAPER_CUSTOM;
 
        if (!use_geometry) {
                switch (papersize) {
@@ -769,47 +815,65 @@ bool BufferParams::writeLaTeX(ostream & os, LaTeXFeatures & features,
        string strOptions(clsoptions.str());
        if (!strOptions.empty()) {
                strOptions = rtrim(strOptions, ",");
-               os << '[' << strOptions << ']';
+               // FIXME UNICODE
+               os << '[' << from_utf8(strOptions) << ']';
        }
 
-       os << '{' << tclass.latexname() << "}\n";
+       os << '{' << from_ascii(tclass.latexname()) << "}\n";
        texrow.newline();
        // end of \documentclass defs
 
        // font selection must be done before loading fontenc.sty
-       // The ae package is not needed when using OT1 font encoding.
-       if (fonts != "default" &&
-           (fonts != "ae" || lyxrc.fontenc != "default")) {
-               os << "\\usepackage{" << fonts << "}\n";
+       string const fonts =
+               loadFonts(features, fontsRoman, fontsSans,
+                         fontsTypewriter, fontsSC, fontsOSF,
+                         fontsSansScale, fontsTypewriterScale);
+       if (!fonts.empty()) {
+               os << from_ascii(fonts);
                texrow.newline();
-               if (fonts == "ae") {
-                       os << "\\usepackage{aecompl}\n";
-                       texrow.newline();
-               }
        }
+       if (fontsDefaultFamily != "default")
+               os << "\\renewcommand{\\familydefault}{\\"
+                  << from_ascii(fontsDefaultFamily) << "}\n";
        // this one is not per buffer
        if (lyxrc.fontenc != "default") {
-               os << "\\usepackage[" << lyxrc.fontenc
+               os << "\\usepackage[" << from_ascii(lyxrc.fontenc)
                   << "]{fontenc}\n";
                texrow.newline();
        }
 
        if (inputenc == "auto") {
                string const doc_encoding =
-                       language->encoding()->LatexName();
+                       language->encoding()->latexName();
 
                // Create a list with all the input encodings used
                // in the document
                std::set<string> encodings =
                        features.getEncodingSet(doc_encoding);
 
-               os << "\\usepackage[";
-               std::copy(encodings.begin(), encodings.end(),
-                         std::ostream_iterator<string>(os, ","));
-               os << doc_encoding << "]{inputenc}\n";
-               texrow.newline();
-       } else if (inputenc != "default") {
-               os << "\\usepackage[" << inputenc
+               // thailatex does not use the inputenc package, but sets up
+               // babel directly for tis620-0 encoding, therefore we must
+               // not request inputenc for tis620-0 encoding
+               if (!encodings.empty() || doc_encoding != "tis620-0") {
+                       os << "\\usepackage[";
+                       std::set<string>::const_iterator it = encodings.begin();
+                       std::set<string>::const_iterator const end = encodings.end();
+                       if (it != end) {
+                               os << from_ascii(*it);
+                               ++it;
+                       }
+                       for (; it != end; ++it)
+                               os << ',' << from_ascii(*it);
+                       if (doc_encoding != "tis620-0") {
+                               if (!encodings.empty())
+                                       os << ',';
+                               os << from_ascii(doc_encoding);
+                       }
+                       os << "]{inputenc}\n";
+                       texrow.newline();
+               }
+       } else if (inputenc != "default" && inputenc != "tis620-0") {
+               os << "\\usepackage[" << from_ascii(inputenc)
                   << "]{inputenc}\n";
                texrow.newline();
        }
@@ -824,10 +888,10 @@ bool BufferParams::writeLaTeX(ostream & os, LaTeXFeatures & features,
                case PAPER_CUSTOM:
                        if (!paperwidth.empty())
                                os << ",paperwidth="
-                                  << paperwidth;
+                                  << from_ascii(paperwidth);
                        if (!paperheight.empty())
                                os << ",paperheight="
-                                  << paperheight;
+                                  << from_ascii(paperheight);
                        break;
                case PAPER_USLETTER:
                        os << ",letterpaper";
@@ -888,19 +952,19 @@ bool BufferParams::writeLaTeX(ostream & os, LaTeXFeatures & features,
                        }
                }
                if (!topmargin.empty())
-                       os << ",tmargin=" << topmargin;
+                       os << ",tmargin=" << from_ascii(topmargin);
                if (!bottommargin.empty())
-                       os << ",bmargin=" << bottommargin;
+                       os << ",bmargin=" << from_ascii(bottommargin);
                if (!leftmargin.empty())
-                       os << ",lmargin=" << leftmargin;
+                       os << ",lmargin=" << from_ascii(leftmargin);
                if (!rightmargin.empty())
-                       os << ",rmargin=" << rightmargin;
+                       os << ",rmargin=" << from_ascii(rightmargin);
                if (!headheight.empty())
-                       os << ",headheight=" << headheight;
+                       os << ",headheight=" << from_ascii(headheight);
                if (!headsep.empty())
-                       os << ",headsep=" << headsep;
+                       os << ",headsep=" << from_ascii(headsep);
                if (!footskip.empty())
-                       os << ",footskip=" << footskip;
+                       os << ",footskip=" << from_ascii(footskip);
                os << "}\n";
                texrow.newline();
        }
@@ -911,67 +975,70 @@ bool BufferParams::writeLaTeX(ostream & os, LaTeXFeatures & features,
                        os << "\\usepackage{fancyhdr}\n";
                        texrow.newline();
                }
-               os << "\\pagestyle{" << pagestyle << "}\n";
+               os << "\\pagestyle{" << from_ascii(pagestyle) << "}\n";
                texrow.newline();
        }
 
-       if (secnumdepth != tclass.secnumdepth()) {
-               os << "\\setcounter{secnumdepth}{"
-                  << secnumdepth
-                  << "}\n";
-               texrow.newline();
-       }
-       if (tocdepth != tclass.tocdepth()) {
-               os << "\\setcounter{tocdepth}{"
-                  << tocdepth
-                  << "}\n";
-               texrow.newline();
+       // Only if class has a ToC hierarchy
+       if (tclass.hasTocLevels()) {
+               if (secnumdepth != tclass.secnumdepth()) {
+                       os << "\\setcounter{secnumdepth}{"
+                          << secnumdepth
+                          << "}\n";
+                       texrow.newline();
+               }
+               if (tocdepth != tclass.tocdepth()) {
+                       os << "\\setcounter{tocdepth}{"
+                          << tocdepth
+                          << "}\n";
+                       texrow.newline();
+               }
        }
 
        if (paragraph_separation) {
                switch (getDefSkip().kind()) {
                case VSpace::SMALLSKIP:
-                       os << "\\setlength\\parskip{\\smallskipamount}\n";
+                       os << "\\setlength{\\parskip}{\\smallskipamount}\n";
                        break;
                case VSpace::MEDSKIP:
-                       os << "\\setlength\\parskip{\\medskipamount}\n";
+                       os << "\\setlength{\\parskip}{\\medskipamount}\n";
                        break;
                case VSpace::BIGSKIP:
-                       os << "\\setlength\\parskip{\\bigskipamount}\n";
+                       os << "\\setlength{\\parskip}{\\bigskipamount}\n";
                        break;
                case VSpace::LENGTH:
-                       os << "\\setlength\\parskip{"
-                          << getDefSkip().length().asLatexString()
+                       os << "\\setlength{\\parskip}{"
+                          << from_utf8(getDefSkip().length().asLatexString())
                           << "}\n";
                        break;
                default: // should never happen // Then delete it.
-                       os << "\\setlength\\parskip{\\medskipamount}\n";
+                       os << "\\setlength{\\parskip}{\\medskipamount}\n";
                        break;
                }
                texrow.newline();
 
-               os << "\\setlength\\parindent{0pt}\n";
+               os << "\\setlength{\\parindent}{0pt}\n";
                texrow.newline();
        }
 
        // If we use jurabib, we have to call babel here.
        if (use_babel && features.isRequired("jurabib")) {
-               os << babelCall(language_options.str())
+               os << from_ascii(babelCall(language_options.str()))
                   << '\n'
-                  << features.getBabelOptions();
+                  << from_ascii(features.getBabelOptions());
                texrow.newline();
        }
 
        // Now insert the LyX specific LaTeX commands...
 
        // The optional packages;
-       string lyxpreamble(features.getPackages());
+       docstring lyxpreamble(from_ascii(features.getPackages()));
 
        // this might be useful...
        lyxpreamble += "\n\\makeatletter\n";
 
        // Some macros LyX will need
-       string tmppreamble(features.getMacros());
+       docstring tmppreamble(from_ascii(features.getMacros()));
 
        if (!tmppreamble.empty()) {
                lyxpreamble += "\n%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% "
@@ -989,9 +1056,10 @@ bool BufferParams::writeLaTeX(ostream & os, LaTeXFeatures & features,
 
        /* the user-defined preamble */
        if (!preamble.empty()) {
+               // FIXME UNICODE
                lyxpreamble += "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% "
                        "User specified LaTeX commands.\n"
-                       + preamble + '\n';
+                       + from_utf8(preamble) + '\n';
        }
 
        // Itemize bullet settings need to be last in case the user
@@ -1000,11 +1068,11 @@ bool BufferParams::writeLaTeX(ostream & os, LaTeXFeatures & features,
        // Actually it has to be done much later than that
        // since some packages like frenchb make modifications
        // at \begin{document} time -- JMarc
-       string bullets_def;
+       docstring bullets_def;
        for (int i = 0; i < 4; ++i) {
                if (user_defined_bullet(i) != ITEMIZE_DEFAULTS[i]) {
                        if (bullets_def.empty())
-                               bullets_def="\\AtBeginDocument{\n";
+                               bullets_def += "\\AtBeginDocument{\n";
                        bullets_def += "  \\def\\labelitemi";
                        switch (i) {
                                // `i' is one less than the item to modify
@@ -1033,14 +1101,15 @@ bool BufferParams::writeLaTeX(ostream & os, LaTeXFeatures & features,
        // with other packages.
        // Jurabib has to be called after babel, though.
        if (use_babel && !features.isRequired("jurabib")) {
-               lyxpreamble += babelCall(language_options.str()) + '\n';
-               lyxpreamble += features.getBabelOptions();
+               // FIXME UNICODE
+               lyxpreamble += from_utf8(babelCall(language_options.str())) + '\n';
+               lyxpreamble += from_utf8(features.getBabelOptions());
        }
 
        lyxpreamble += "\\makeatother\n";
 
        // dvipost settings come after everything else
-       if (features.isAvailable("dvipost") && tracking_changes && output_changes) {
+       if (features.isAvailable("dvipost") && outputChanges) {
                lyxpreamble +=
                        "\\dvipostlayout\n"
                        "\\dvipost{osstart color push Red}\n"
@@ -1068,8 +1137,11 @@ void BufferParams::useClassDefaults()
        columns = tclass.columns();
        pagestyle = tclass.pagestyle();
        options = tclass.options();
-       secnumdepth = tclass.secnumdepth();
-       tocdepth = tclass.tocdepth();
+       // Only if class has a ToC hierarchy
+       if (tclass.hasTocLevels()) {
+               secnumdepth = tclass.secnumdepth();
+               tocdepth = tclass.tocdepth();
+       }
 }
 
 
@@ -1096,6 +1168,12 @@ LyXFont const BufferParams::getFont() const
 {
        LyXFont f = getLyXTextClass().defaultfont();
        f.setLanguage(language);
+       if (fontsDefaultFamily == "rmdefault")
+               f.setFamily(LyXFont::ROMAN_FAMILY);
+       else if (fontsDefaultFamily == "sfdefault")
+               f.setFamily(LyXFont::SANS_FAMILY);
+       else if (fontsDefaultFamily == "ttdefault")
+               f.setFamily(LyXFont::TYPEWRITER_FAMILY);
        return f;
 }
 
@@ -1176,7 +1254,7 @@ void BufferParams::readBulletsLaTeX(LyXLex & lex)
        if (!lex.next()) return;
        int const index = lex.getInteger();
        lex.next(true);
-       string const temp_str = lex.getString();
+       docstring const temp_str = lex.getDocString();
 
        user_defined_bullet(index).setText(temp_str);
        temp_bullet(index).setText(temp_str);
@@ -1247,3 +1325,156 @@ string const BufferParams::babelCall(string const & lang_opts) const
                tmp = string("\\usepackage[") + lang_opts + "]{babel}";
        return tmp;
 }
+
+
+string const BufferParams::loadFonts(LaTeXFeatures & features, string const & rm,
+                                    string const & sf, string const & tt,
+                                    bool const & sc, bool const & osf,
+                                    int const & sfscale, int const & ttscale) const
+{
+       /* The LaTeX font world is in a flux. In the PSNFSS font interface,
+          several packages have been replaced by others, that might not
+          be installed on every system. We have to take care for that
+          (see psnfss.pdf). We try to support all psnfss fonts as well
+          as the fonts that have become de facto standard in the LaTeX
+          world (e.g. Latin Modern). We do not support obsolete fonts
+          (like PSLatex). In general, it should be possible to mix any
+          rm font with any sf or tt font, respectively. (JSpitzm)
+          TODO:
+               -- separate math fonts.
+       */
+
+       if (rm == "default" && sf == "default" && tt == "default")
+               //nothing to do
+               return string();
+
+       ostringstream os;
+
+       // ROMAN FONTS
+       // Computer Modern (must be explicitely selectable -- there might be classes
+       // that define a different default font!
+       if (rm == "cmr") {
+               os << "\\renewcommand{\\rmdefault}{cmr}\n";
+               // osf for Computer Modern needs eco.sty
+               if (osf)
+                       os << "\\usepackage{eco}\n";
+       }
+       // Latin Modern Roman
+       else if (rm == "lmodern")
+               os << "\\usepackage{lmodern}\n";
+       // AE
+       else if (rm == "ae") {
+               // not needed when using OT1 font encoding.
+               if (lyxrc.fontenc != "default")
+                       os << "\\usepackage{ae,aecompl}\n";
+       }
+       // Times
+       else if (rm == "times") {
+               // try to load the best available package
+               if (features.isAvailable("mathptmx"))
+                       os << "\\usepackage{mathptmx}\n";
+               else if (features.isAvailable("mathptm"))
+                       os << "\\usepackage{mathptm}\n";
+               else
+                       os << "\\usepackage{times}\n";
+       }
+       // Palatino
+       else if (rm == "palatino") {
+               // try to load the best available package
+               if (features.isAvailable("mathpazo")) {
+                       os << "\\usepackage";
+                       if (osf || sc) {
+                               os << '[';
+                               if (!osf)
+                                       os << "sc";
+                               else
+                                       // "osf" includes "sc"!
+                                       os << "osf";
+                               os << ']';
+                       }
+                       os << "{mathpazo}\n";
+               }
+               else if (features.isAvailable("mathpple"))
+                       os << "\\usepackage{mathpple}\n";
+               else
+                       os << "\\usepackage{palatino}\n";
+       }
+       // Utopia
+       else if (rm == "utopia") {
+               // fourier supersedes utopia.sty, but does
+               // not work with OT1 encoding.
+               if (features.isAvailable("fourier")
+                   && lyxrc.fontenc != "default") {
+                       os << "\\usepackage";
+                       if (osf || sc) {
+                               os << '[';
+                               if (sc)
+                                       os << "expert";
+                               if (osf && sc)
+                                       os << ',';
+                               if (osf)
+                                       os << "oldstyle";
+                               os << ']';
+                       }
+                       os << "{fourier}\n";
+               }
+               else
+                       os << "\\usepackage{utopia}\n";
+       }
+       // Bera (complete fontset)
+       else if (rm == "bera" && sf == "default" && tt == "default")
+               os << "\\usepackage{bera}\n";
+       // everything else
+       else if (rm != "default")
+               os << "\\usepackage" << "{" << rm << "}\n";
+
+       // SANS SERIF
+       // Helvetica, Bera Sans
+       if (sf == "helvet" || sf == "berasans") {
+               if (sfscale != 100)
+                       os << "\\usepackage[scaled=" << float(sfscale) / 100
+                          << "]{" << sf << "}\n";
+               else
+                       os << "\\usepackage{" << sf << "}\n";
+       }
+       // Avant Garde
+       else if (sf == "avant")
+               os << "\\usepackage{" << sf << "}\n";
+       // Computer Modern, Latin Modern, CM Bright
+       else if (sf != "default")
+               os << "\\renewcommand{\\sfdefault}{" << sf << "}\n";
+
+       // monospaced/typewriter
+       // Courier, LuxiMono
+       if (tt == "luximono" || tt == "beramono") {
+               if (ttscale != 100)
+                       os << "\\usepackage[scaled=" << float(ttscale) / 100
+                          << "]{" << tt << "}\n";
+               else
+                       os << "\\usepackage{" << tt << "}\n";
+       }
+       // Courier
+       else if (tt == "courier" )
+               os << "\\usepackage{" << tt << "}\n";
+       // Computer Modern, Latin Modern, CM Bright
+       else if  (tt != "default")
+               os << "\\renewcommand{\\ttdefault}{" << tt << "}\n";
+
+       return os.str();
+}
+
+
+Encoding const & BufferParams::encoding() const
+{
+       if (inputenc == "auto" || inputenc == "default")
+               return *(language->encoding());
+       Encoding const * const enc =
+               encodings.getFromLaTeXName(inputenc);
+       if (enc)
+               return *enc;
+       lyxerr << "Unknown inputenc value `" << inputenc
+              << "'. Using `auto' instead." << endl;
+       return *(language->encoding());
+}
+
+} // namespace lyx