]> git.lyx.org Git - lyx.git/blobdiff - src/BufferParams.cpp
Andre's s/getTextClass/textClass/ cleanup.
[lyx.git] / src / BufferParams.cpp
index e2f5f2a26c487bd746bf68b005e76b0095d74a86..6355dbcc6729d3f5a439c50f33936d5c6a260963 100644 (file)
 
 #include "Author.h"
 #include "BranchList.h"
+#include "buffer_funcs.h"
 #include "Bullet.h"
-#include "debug.h"
+#include "Color.h"
 #include "Encoding.h"
-#include "gettext.h"
 #include "Language.h"
 #include "LaTeXFeatures.h"
-#include "Messages.h"
-#include "Color.h"
+#include "ModuleList.h"
 #include "Font.h"
 #include "Lexer.h"
 #include "LyXRC.h"
 #include "Spacing.h"
 #include "TexRow.h"
 #include "VSpace.h"
+#include "PDFOptions.h"
 
 #include "frontends/alert.h"
+
 #include "insets/InsetListingsParams.h"
 
-#include "support/lyxalgo.h" // for lyx::count
 #include "support/convert.h"
+#include "support/debug.h"
+#include "support/docstream.h"
+#include "support/FileName.h"
+#include "support/filetools.h"
+#include "support/gettext.h"
+#include "support/Messages.h"
 #include "support/Translator.h"
+#include "support/lstrings.h"
 
-#include <boost/array.hpp>
-
+#include <algorithm>
 #include <sstream>
 
-using std::endl;
-using std::string;
-using std::istringstream;
-using std::ostream;
-using std::ostringstream;
-using std::pair;
-
-using lyx::support::bformat;
-using lyx::support::rtrim;
-using lyx::support::tokenPos;
+using namespace std;
+using namespace lyx::support;
 
 
 static char const * const string_paragraph_separation[] = {
@@ -139,7 +137,7 @@ QuotesLangTranslator const & quoteslangtranslator()
 
 
 // Paper size
-typedef Translator<std::string, PAPER_SIZE> PaperSizeTranslator;
+typedef Translator<string, PAPER_SIZE> PaperSizeTranslator;
 
 
 PaperSizeTranslator const init_papersizetranslator()
@@ -186,13 +184,13 @@ PaperOrientationTranslator const & paperorientationtranslator()
 
 
 // Page sides
-typedef Translator<int, TextClass::PageSides> SidesTranslator;
+typedef Translator<int, PageSides> SidesTranslator;
 
 
 SidesTranslator const init_sidestranslator()
 {
-       SidesTranslator translator(1, TextClass::OneSide);
-       translator.addPair(2, TextClass::TwoSides);
+       SidesTranslator translator(1, OneSide);
+       translator.addPair(2, TwoSides);
        return translator;
 }
 
@@ -267,15 +265,6 @@ SpaceTranslator const & spacetranslator()
 }
 
 
-textclass_type defaultTextclass()
-{
-       // Initialize textclass to point to article. if `first' is
-       // 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.
-       return textclasslist.numberOfClass("article").second;
-}
-
 } // anon namespace
 
 
@@ -286,13 +275,14 @@ public:
 
        AuthorList authorlist;
        BranchList branchlist;
-       boost::array<Bullet, 4> temp_bullets;
-       boost::array<Bullet, 4> user_defined_bullets;
+       Bullet temp_bullets[4];
+       Bullet user_defined_bullets[4];
        Spacing spacing;
        /** This is the amount of space used for paragraph_separation "skip",
         * and for detached paragraphs in "indented" documents.
         */
        VSpace defskip;
+       PDFOptions pdfoptions;
 };
 
 
@@ -321,8 +311,10 @@ void BufferParams::MemoryTraits::destroy(BufferParams::Impl * ptr)
 
 
 BufferParams::BufferParams()
-       : textclass(defaultTextclass()), pimpl_(new Impl)
+       : pimpl_(new Impl)
 {
+       setBaseClass(defaultTextclass());
+       makeTextClass();
        paragraph_separation = PARSEP_INDENT;
        quotes_language = InsetQuotes::EnglishQ;
        fontsize = "default";
@@ -350,11 +342,12 @@ BufferParams::BufferParams()
        fontsTypewriterScale = 100;
        inputenc = "auto";
        graphicsDriver = "default";
-       sides = TextClass::OneSide;
+       sides = OneSide;
        columns = 1;
        listings_params = string();
        pagestyle = "default";
        compressed = false;
+       embedded = false;
        for (int iter = 0; iter < 4; ++iter) {
                user_defined_bullet(iter) = ITEMIZE_DEFAULTS[iter];
                temp_bullet(iter) = ITEMIZE_DEFAULTS[iter];
@@ -437,6 +430,18 @@ Spacing const & BufferParams::spacing() const
 }
 
 
+PDFOptions & BufferParams::pdfoptions()
+{
+       return pimpl_->pdfoptions;
+}
+
+
+PDFOptions const & BufferParams::pdfoptions() const
+{
+       return pimpl_->pdfoptions;
+}
+
+
 VSpace const & BufferParams::getDefSkip() const
 {
        return pimpl_->defskip;
@@ -449,29 +454,35 @@ void BufferParams::setDefSkip(VSpace const & vs)
 }
 
 
-string const BufferParams::readToken(Lexer & lex, string const & token)
+string const BufferParams::readToken(Lexer & lex, string const & token,
+       FileName const & filepath)
 {
        if (token == "\\textclass") {
                lex.next();
                string const classname = lex.getString();
+               // if there exists a local layout file, ignore the system one
+               // NOTE: in this case, the textclass (.cls file) is assumed to be available.
                pair<bool, lyx::textclass_type> pp =
-                       textclasslist.numberOfClass(classname);
-               if (pp.first) {
-                       textclass = pp.second;
-               } else {
-                       // 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 = defaultTextclass();
+                       make_pair(false, textclass_type(0));
+               if (!filepath.empty())
+                       pp = textclasslist.addTextClass(
+                               classname, filepath.absFilename());
+               if (pp.first)
+                       setBaseClass(pp.second);
+               else {
+                       pp = textclasslist.numberOfClass(classname);
+                       if (pp.first)
+                               setBaseClass(pp.second);
+                       else {
+                               // a warning will be given for unknown class
+                               setBaseClass(defaultTextclass());
                                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 (!getTextClass().isTeXClassAvailable()) {
+               // FIXME: this warning will be given even if there exists a local .cls
+               // file. Even worse, the .lyx file can not be compiled or exported
+               // because the textclass is marked as unavilable.
+               if (!textClass().isTeXClassAvailable()) {
                        docstring const msg =
                                bformat(_("The layout file requested by this document,\n"
                                                 "%1$s.layout,\n"
@@ -481,9 +492,12 @@ string const BufferParams::readToken(Lexer & lex, string const & token)
                                                 "for more information.\n"), from_utf8(classname));
                        frontend::Alert::warning(_("Document class not available"),
                                       msg + _("LyX will not be able to produce output."));
-               }
+               } 
+               
        } else if (token == "\\begin_preamble") {
                readPreamble(lex);
+       } else if (token == "\\begin_modules") {
+               readModules(lex);
        } else if (token == "\\options") {
                lex.eatLine();
                options = lex.getString();
@@ -515,7 +529,11 @@ string const BufferParams::readToken(Lexer & lex, string const & token)
                paragraph_separation = parseptranslator().find(parsep);
        } else if (token == "\\defskip") {
                lex.next();
-               pimpl_->defskip = VSpace(lex.getString());
+               string defskip = lex.getString();
+               if (defskip == "defskip")
+                       // this is invalid
+                       defskip = "medskip";
+               pimpl_->defskip = VSpace(defskip);
        } else if (token == "\\quotes_language") {
                string quotes_lang;
                lex >> quotes_lang;
@@ -567,7 +585,7 @@ string const BufferParams::readToken(Lexer & lex, string const & token)
                                        branch_ptr->setColor(color);
                                // Update also the Color table:
                                if (color == "none")
-                                       color = lcolor.getX11Name(Color::background);
+                                       color = lcolor.getX11Name(Color_background);
                                // FIXME UNICODE
                                lcolor.setColor(to_utf8(branch), color);
 
@@ -601,6 +619,8 @@ string const BufferParams::readToken(Lexer & lex, string const & token)
                lex >> headsep;
        } else if (token == "\\footskip") {
                lex >> footskip;
+       } else if (token == "\\columnsep") {
+               lex >> columnsep;
        } else if (token == "\\paperfontsize") {
                lex >> fontsize;
        } else if (token == "\\papercolumns") {
@@ -633,7 +653,17 @@ string const BufferParams::readToken(Lexer & lex, string const & token)
                spacing().set(spacetranslator().find(nspacing), tmp_val);
        } else if (token == "\\float_placement") {
                lex >> float_placement;
+
+       } else if (prefixIs(token, "\\pdf_") || token == "\\use_hyperref") {
+               string toktmp = pdfoptions().readToken(lex, token);
+               if (!toktmp.empty()) {
+                       lyxerr << "PDFOptions::readToken(): Unknown token: " <<
+                               toktmp << endl;
+                       return toktmp;
+               }
        } else {
+               lyxerr << "BufferParams::readToken(): Unknown token: " << 
+                       token << endl;
                return token;
        }
 
@@ -647,7 +677,7 @@ void BufferParams::writeFile(ostream & os) const
        // Prints out the buffer info into the .lyx file given by file
 
        // the textclass
-       os << "\\textclass " << textclasslist[textclass].name() << '\n';
+       os << "\\textclass " << textclasslist[baseClass_].name() << '\n';
 
        // then the preamble
        if (!preamble.empty()) {
@@ -662,6 +692,15 @@ void BufferParams::writeFile(ostream & os) const
        if (!options.empty()) {
                os << "\\options " << options << '\n';
        }
+       
+       //the modules
+       if (!layoutModules_.empty()) {
+               os << "\\begin_modules" << '\n';
+               LayoutModuleList::const_iterator it = layoutModules_.begin();
+               for (; it != layoutModules_.end(); it++)
+                       os << *it << '\n';
+               os << "\\end_modules" << '\n';
+       }
 
        // then the text parameters
        if (language != ignore_language)
@@ -683,6 +722,7 @@ void BufferParams::writeFile(ostream & os) const
        os << "\\paperfontsize " << fontsize << '\n';
 
        spacing().writeFile(os);
+       pdfoptions().writeFile(os);
 
        os << "\\papersize " << string_papersize[papersize]
           << "\n\\use_geometry " << convert<string>(use_geometry)
@@ -730,6 +770,9 @@ void BufferParams::writeFile(ostream & os) const
        if (!footskip.empty())
                os << "\\footskip "
                   << VSpace(footskip).asLyXCommand() << '\n';
+       if (!columnsep.empty())
+               os << "\\columnsep " 
+                        << VSpace(columnsep).asLyXCommand() << '\n';
        os << "\\secnumdepth " << secnumdepth
           << "\n\\tocdepth " << tocdepth
           << "\n\\paragraph_separation "
@@ -774,12 +817,92 @@ void BufferParams::writeFile(ostream & os) const
 }
 
 
+void BufferParams::validate(LaTeXFeatures & features) const
+{
+       features.require(textClass().requires());
+
+       if (outputChanges) {
+               bool dvipost    = LaTeXFeatures::isAvailable("dvipost");
+               bool xcolorsoul = LaTeXFeatures::isAvailable("soul") &&
+                                 LaTeXFeatures::isAvailable("xcolor");
+
+               switch (features.runparams().flavor) {
+               case OutputParams::LATEX:
+                       if (dvipost) {
+                               features.require("ct-dvipost");
+                               features.require("dvipost");
+                       } else if (xcolorsoul) {
+                               features.require("ct-xcolor-soul");
+                               features.require("soul");
+                               features.require("xcolor");
+                       } else {
+                               features.require("ct-none");
+                       }
+                       break;
+               case OutputParams::PDFLATEX:
+                       if (xcolorsoul) {
+                               features.require("ct-xcolor-soul");
+                               features.require("soul");
+                               features.require("xcolor");
+                               // improves color handling in PDF output
+                               features.require("pdfcolmk"); 
+                       } else {
+                               features.require("ct-none");
+                       }
+                       break;
+               default:
+                       break;
+               }
+       }
+
+       // Floats with 'Here definitely' as default setting.
+       if (float_placement.find('H') != string::npos)
+               features.require("float");
+
+       // AMS Style is at document level
+       if (use_amsmath == package_on
+           || textClass().provides("amsmath"))
+               features.require("amsmath");
+       if (use_esint == package_on)
+               features.require("esint");
+
+       // Document-level line spacing
+       if (spacing().getSpace() != Spacing::Single && !spacing().isDefault())
+               features.require("setspace");
+
+       // the bullet shapes are buffer level not paragraph level
+       // so they are tested here
+       for (int i = 0; i < 4; ++i) {
+               if (user_defined_bullet(i) == ITEMIZE_DEFAULTS[i]) 
+                       continue;
+               int const font = user_defined_bullet(i).getFont();
+               if (font == 0) {
+                       int const c = user_defined_bullet(i).getCharacter();
+                       if (c == 16
+                           || c == 17
+                           || c == 25
+                           || c == 26
+                           || c == 31) {
+                               features.require("latexsym");
+                       }
+               } else if (font == 1) {
+                       features.require("amssymb");
+               } else if (font >= 2 && font <= 5) {
+                       features.require("pifont");
+               }
+       }
+
+       if (pdfoptions().use_hyperref)
+               features.require("hyperref");
+}
+
+
 bool BufferParams::writeLaTeX(odocstream & os, LaTeXFeatures & features,
                              TexRow & texrow) const
 {
        os << "\\documentclass";
 
-       TextClass const & tclass = getTextClass();
+       TextClass const & tclass = textClass();
 
        ostringstream clsoptions; // the document class options.
 
@@ -827,10 +950,10 @@ bool BufferParams::writeLaTeX(odocstream & os, LaTeXFeatures & features,
        // if needed
        if (sides != tclass.sides()) {
                switch (sides) {
-               case TextClass::OneSide:
+               case OneSide:
                        clsoptions << "oneside,";
                        break;
-               case TextClass::TwoSides:
+               case TwoSides:
                        clsoptions << "twoside,";
                        break;
                }
@@ -863,7 +986,13 @@ bool BufferParams::writeLaTeX(odocstream & os, LaTeXFeatures & features,
                                language_options << ',';
                        language_options << language->babel();
                }
-               if (lyxrc.language_global_options && !language_options.str().empty())
+               // when Vietnamese is used, babel must directly be loaded with the
+               // language options, not in the class options, see
+               // http://www.mail-archive.com/lyx-devel@lists.lyx.org/msg129417.html
+               size_t viet = language_options.str().find("vietnam");
+               // viet = string::npos when not found
+               if (lyxrc.language_global_options && !language_options.str().empty()
+                       && viet == string::npos)
                        clsoptions << language_options.str() << ',';
        }
 
@@ -1015,6 +1144,8 @@ bool BufferParams::writeLaTeX(odocstream & os, LaTeXFeatures & features,
                        os << ",headsep=" << from_ascii(Length(headsep).asLatexString());
                if (!footskip.empty())
                        os << ",footskip=" << from_ascii(Length(footskip).asLatexString());
+               if (!columnsep.empty())
+                       os << ",columnsep=" << from_ascii(Length(columnsep).asLatexString());
                os << "}\n";
                texrow.newline();
        }
@@ -1084,6 +1215,56 @@ bool BufferParams::writeLaTeX(odocstream & os, LaTeXFeatures & features,
        // The optional packages;
        docstring lyxpreamble(from_ascii(features.getPackages()));
 
+       // Line spacing
+       lyxpreamble += from_utf8(spacing().writePreamble(tclass.provides("SetSpace")));
+
+       // We try to load babel late, in case it interferes
+       // with other packages. But some packages also need babel to be loaded
+       // before, e.g. jurabib has to be called after babel.
+       // So load babel after the optional packages but before the user-defined
+       // preamble. This allows the users to redefine babel commands, e.g. to
+       // translate the word "Index" to the German "Stichwortverzeichnis".
+       // For more infos why this place was chosen, see
+       // http://www.mail-archive.com/lyx-devel@lists.lyx.org/msg128425.html
+       // If you encounter problems, you can shift babel to its old place behind
+       // the user-defined preamble. But in this case you must change the Vietnamese
+       // support from currently "\usepackage[vietnamese]{babel}" to:
+       // \usepackage{vietnamese}
+       // \usepackage{babel}
+       // because vietnamese must be loaded before hyperref
+       if (use_babel && !features.isRequired("jurabib")) {
+               // FIXME UNICODE
+               lyxpreamble += from_utf8(babelCall(language_options.str())) + '\n';
+               lyxpreamble += from_utf8(features.getBabelOptions());
+       }
+
+       // When the language "japanese-plain" is used, the package "japanese" must
+       // be loaded behind babel (it provides babel support for Japanese) but before
+       // hyperref, see
+       // http://www.mail-archive.com/lyx-devel@lists.lyx.org/msg129680.html
+       if (language->lang() == "japanese-plain" &&
+               !textClass().provides("japanese")) {
+               //load babel in case it was not loaded due to an empty language list
+               if (language_options.str().empty())
+                       lyxpreamble += "\\usepackage{babel}\n";
+               lyxpreamble += "\\usepackage{japanese}\n";
+       }
+
+       // PDF support.
+       // * Hyperref manual: "Make sure it comes last of your loaded
+       //   packages, to give it a fighting chance of not being over-written,
+       //   since its job is to redefine many LATEX commands."
+       // * Email from Heiko Oberdiek: "It is usually better to load babel
+       //   before hyperref. Then hyperref has a chance to detect babel.
+       // * Has to be loaded before the "LyX specific LaTeX commands" to
+       //   avoid errors with algorithm floats.
+       // use hyperref explicitely when it is required
+       if (features.isRequired("hyperref")) {
+               odocstringstream oss;
+               pdfoptions().writeLaTeX(oss, textClass().provides("hyperref"));
+               lyxpreamble += oss.str();
+       }
+
        // this might be useful...
        lyxpreamble += "\n\\makeatletter\n";
 
@@ -1147,19 +1328,10 @@ bool BufferParams::writeLaTeX(odocstream & os, LaTeXFeatures & features,
        if (!bullets_def.empty())
                lyxpreamble += bullets_def + "}\n\n";
 
-       // We try to load babel late, in case it interferes
-       // with other packages.
-       // Jurabib has to be called after babel, though.
-       if (use_babel && !features.isRequired("jurabib")) {
-               // FIXME UNICODE
-               lyxpreamble += from_utf8(babelCall(language_options.str())) + '\n';
-               lyxpreamble += from_utf8(features.getBabelOptions());
-       }
-
        lyxpreamble += "\\makeatother\n\n";
 
        int const nlines =
-               int(lyx::count(lyxpreamble.begin(), lyxpreamble.end(), '\n'));
+               int(count(lyxpreamble.begin(), lyxpreamble.end(), '\n'));
        for (int j = 0; j != nlines; ++j) {
                texrow.newline();
        }
@@ -1171,7 +1343,7 @@ bool BufferParams::writeLaTeX(odocstream & os, LaTeXFeatures & features,
 
 void BufferParams::useClassDefaults()
 {
-       TextClass const & tclass = textclasslist[textclass];
+       TextClass const & tclass = textclasslist[baseClass_];
 
        sides = tclass.sides();
        columns = tclass.columns();
@@ -1187,7 +1359,7 @@ void BufferParams::useClassDefaults()
 
 bool BufferParams::hasClassDefaults() const
 {
-       TextClass const & tclass = textclasslist[textclass];
+       TextClass const & tclass = textclasslist[baseClass_];
 
        return (sides == tclass.sides()
                && columns == tclass.columns()
@@ -1198,23 +1370,119 @@ bool BufferParams::hasClassDefaults() const
 }
 
 
-TextClass const & BufferParams::getTextClass() const
+TextClass const & BufferParams::textClass() const
 {
-       return textclasslist[textclass];
+       return *textClass_;
+}
+
+
+TextClassPtr BufferParams::textClassPtr() const {
+       return textClass_;
+}
+
+
+void BufferParams::setTextClass(TextClassPtr tc) {
+       textClass_ = tc;
+}
+
+
+bool BufferParams::setBaseClass(textclass_type tc)
+{
+       if (textclasslist[tc].load()) {
+               baseClass_ = tc;
+               return true;
+       }
+       
+       docstring s = 
+               bformat(_("The document class %1$s could not be loaded."),
+               from_utf8(textclasslist[tc].name()));
+       frontend::Alert::error(_("Could not load class"), s);
+       return false;
+}
+
+
+textclass_type BufferParams::getBaseClass() const
+{
+       return baseClass_;
+}
+
+
+void BufferParams::makeTextClass()
+{
+       textClass_.reset(new TextClass(textclasslist[getBaseClass()]));
+       
+       //FIXME It might be worth loading the children's modules here,
+       //just as we load their bibliographies and such, instead of just 
+       //doing a check in InsetInclude.
+       LayoutModuleList::const_iterator it = layoutModules_.begin();
+       for (; it != layoutModules_.end(); it++) {
+               string const modName = *it;
+               LyXModule * lm = moduleList[modName];
+               if (!lm) {
+                       docstring const msg =
+                               bformat(_("The module %1$s has been requested by\n"
+                                       "this document but has not been found in the list of\n"
+                                       "available modules. If you recently installed it, you\n"
+                                       "probably need to reconfigure LyX.\n"), from_utf8(modName));
+                       frontend::Alert::warning(_("Module not available"),
+                                       msg + _("Some layouts may not be available."));
+                       lyxerr << "BufferParams::makeTextClass(): Module " <<
+                                       modName << " requested but not found in module list." <<
+                                       endl;
+                       continue;
+               }
+               if (!lm->isAvailable()) {
+                       docstring const msg =
+                                               bformat(_("The module %1$s requires a package that is\n"
+                                               "not available in your LaTeX installation. LaTeX output\n"
+                                               "may not be possible.\n"), from_utf8(modName));
+                       frontend::Alert::warning(_("Package not available"), msg);
+               }
+               FileName layout_file = libFileSearch("layouts", lm->getFilename());
+               if (!textClass_->read(layout_file, TextClass::MODULE)) {
+                       docstring const msg =
+                               bformat(_("Error reading module %1$s\n"), from_utf8(modName));
+                       frontend::Alert::warning(_("Read Error"), msg);
+               }
+       }
+}
+
+
+vector<string> const & BufferParams::getModules() const {
+       return layoutModules_;
+}
+
+
+
+bool BufferParams::addLayoutModule(string const & modName) {
+       LayoutModuleList::const_iterator it = layoutModules_.begin();
+       LayoutModuleList::const_iterator end = layoutModules_.end();
+       for (; it != end; it++) {
+               if (*it == modName) 
+                       break;
+       }
+       if (it != layoutModules_.end())
+               return false;
+       layoutModules_.push_back(modName);
+       return true;
+}
+
+
+void BufferParams::clearLayoutModules() {
+       layoutModules_.clear();
 }
 
 
 Font const BufferParams::getFont() const
 {
-       Font f = getTextClass().defaultfont();
-       f.setLanguage(language);
+       FontInfo f = textClass().defaultfont();
        if (fontsDefaultFamily == "rmdefault")
-               f.setFamily(Font::ROMAN_FAMILY);
+               f.setFamily(ROMAN_FAMILY);
        else if (fontsDefaultFamily == "sfdefault")
-               f.setFamily(Font::SANS_FAMILY);
+               f.setFamily(SANS_FAMILY);
        else if (fontsDefaultFamily == "ttdefault")
-               f.setFamily(Font::TYPEWRITER_FAMILY);
-       return f;
+               f.setFamily(TYPEWRITER_FAMILY);
+       return Font(f, language);
 }
 
 
@@ -1301,27 +1569,79 @@ void BufferParams::readBulletsLaTeX(Lexer & lex)
 }
 
 
-string const BufferParams::paperSizeName() const
+void BufferParams::readModules(Lexer & lex)
+{
+       if (!lex.eatLine()) {
+               lyxerr << "Error (BufferParams::readModules):"
+                               "Unexpected end of input." << endl;
+               return;
+       }
+       while (true) {
+               string mod = lex.getString();
+               if (mod == "\\end_modules")
+                       break;
+               addLayoutModule(mod);
+               lex.eatLine();
+       }
+}
+
+
+string const BufferParams::paperSizeName(Papersize_Purpose const & purpose) const
 {
        char real_papersize = papersize;
        if (real_papersize == PAPER_DEFAULT)
                real_papersize = lyxrc.default_papersize;
 
        switch (real_papersize) {
+       case PAPER_DEFAULT:
+               // could be anything, so don't guess
+               return string();
+       case PAPER_CUSTOM: {
+               if (purpose == XDVI && !paperwidth.empty() &&
+                   !paperheight.empty()) {
+                       // heightxwidth<unit>
+                       string first = paperwidth;
+                       string second = paperheight;
+                       if (orientation == ORIENTATION_LANDSCAPE)
+                               first.swap(second);
+                       // cut off unit.
+                       return first.erase(first.length() - 2)
+                               + "x" + second;
+               }
+               return string();
+       }
        case PAPER_A3:
                return "a3";
        case PAPER_A4:
                return "a4";
        case PAPER_A5:
                return "a5";
+       case PAPER_B3:
+               // dvips and dvipdfm do not know this
+               if (purpose == DVIPS || purpose == DVIPDFM)
+                       return string();
+               return "b3";
+       case PAPER_B4:
+               // dvipdfm does not know this
+               if (purpose == DVIPDFM)
+                       return string();
+               return "b4";
        case PAPER_B5:
+               // dvipdfm does not know this
+               if (purpose == DVIPDFM)
+                       return string();
                return "b5";
        case PAPER_USEXECUTIVE:
+               // dvipdfm does not know this
+               if (purpose == DVIPDFM)
+                       return string();
                return "foolscap";
        case PAPER_USLEGAL:
                return "legal";
        case PAPER_USLETTER:
        default:
+               if (purpose == XDVI)
+                       return "us";
                return "letter";
        }
 }
@@ -1341,9 +1661,9 @@ string const BufferParams::dvips_options() const
                result += ' ' + paperwidth;
                result += ',' + paperheight;
        } else {
-               string const paper_option = paperSizeName();
-               if (paper_option != "letter" ||
-                   orientation != ORIENTATION_LANDSCAPE) {
+               string const paper_option = paperSizeName(DVIPS);
+               if (!paper_option.empty() && (paper_option != "letter" ||
+                   orientation != ORIENTATION_LANDSCAPE)) {
                        // dvips won't accept -t letter -t landscape.
                        // In all other cases, include the paper size
                        // explicitly.
@@ -1368,7 +1688,12 @@ string const BufferParams::babelCall(string const & lang_opts) const
        // other languages are used (lang_opts is then empty)
        if (lang_opts.empty())
                return string();
-       if (!lyxrc.language_global_options)
+       // when Vietnamese is used, babel must directly be loaded with the
+       // language options, see
+       // http://www.mail-archive.com/lyx-devel@lists.lyx.org/msg129417.html
+       size_t viet = lang_opts.find("vietnam");
+       // viet = string::npos when not found
+       if (!lyxrc.language_global_options || viet != string::npos)
                return "\\usepackage[" + lang_opts + "]{babel}";
        return lang_pack;
 }
@@ -1385,13 +1710,20 @@ void BufferParams::writeEncodingPreamble(odocstream & os,
 
                // Create a list with all the input encodings used
                // in the document
-               std::set<string> encodings =
+               set<string> encodings =
                        features.getEncodingSet(doc_encoding);
 
+               // When the encodings EUC-JP-plain, JIS-plain, or SJIS-plainare used, the
+               // package inputenc must be omitted. Therefore set the encoding to empty.
+               // see http://www.mail-archive.com/lyx-devel@lists.lyx.org/msg129680.html
+               if (doc_encoding == "EUC-JP-plain" || doc_encoding == "JIS-plain" ||
+                       doc_encoding == "SJIS-plain")
+                       encodings.clear();
+
                if (!encodings.empty() || package == Encoding::inputenc) {
                        os << "\\usepackage[";
-                       std::set<string>::const_iterator it = encodings.begin();
-                       std::set<string>::const_iterator const end = encodings.end();
+                       set<string>::const_iterator it = encodings.begin();
+                       set<string>::const_iterator const end = encodings.end();
                        if (it != end) {
                                os << from_ascii(*it);
                                ++it;
@@ -1406,12 +1738,12 @@ void BufferParams::writeEncodingPreamble(odocstream & os,
                        os << "]{inputenc}\n";
                        texrow.newline();
                }
-               if (package == Encoding::CJK) {
+               if (package == Encoding::CJK || features.mustProvide("CJK")) {
                        os << "\\usepackage{CJK}\n";
                        texrow.newline();
                }
        } else if (inputenc != "default") {
-               switch (language->encoding()->package()) {
+               switch (encoding().package()) {
                case Encoding::none:
                        break;
                case Encoding::inputenc:
@@ -1590,7 +1922,7 @@ biblio::CiteEngine BufferParams::getEngine() const
 {
        // FIXME the class should provide the numerical/
        // authoryear choice
-       if (getTextClass().provides("natbib")
+       if (textClass().provides("natbib")
            && cite_engine_ != biblio::ENGINE_NATBIB_NUMERICAL)
                return biblio::ENGINE_NATBIB_AUTHORYEAR;
        return cite_engine_;