]> git.lyx.org Git - lyx.git/blobdiff - src/tex2lyx/preamble.cpp
tex2lyx: support for subfloats
[lyx.git] / src / tex2lyx / preamble.cpp
index d8624a2ba2222f2c97f3243515673d4150e07453..e31a2a8252a497558d131848cbe6287568849fda 100644 (file)
@@ -44,14 +44,21 @@ namespace lyx {
 extern map<char, int> special_columns;
 
 map<string, vector<string> > used_packages;
+const char * const modules_placeholder = "\001modules\001";
 
 // needed to handle encodings with babel
 bool one_language = true;
+string h_inputencoding = "auto";
+string h_paragraph_separation = "indent";
+
+// necessary to avoid that our preamble stuff is added at each tex2lyx run
+// which would pollute the preamble when doing roundtrips
+bool ifundefined_color_set = false;
 
 namespace {
 
 //add this to known_languages when updating to lyxformat 266:
-// "armenian"
+// "armenian" (needs special handling since not supported by standard babel)
 //add these to known_languages when updating to lyxformat 268:
 //"chinese-simplified", "chinese-traditional", "japanese", "korean"
 // Both changes require first that support for non-babel languages (CJK,
@@ -59,7 +66,7 @@ namespace {
 // add turkmen for lyxformat 383
 /**
  * known babel language names (including synonyms)
- * not in standard babel: arabic, arabtex, belarusian, serbian-latin, thai
+ * not in standard babel: arabic, arabtex, armenian, belarusian, serbian-latin, thai
  * not yet supported by LyX: kurmanji
  * please keep this in sync with known_coded_languages line by line!
  */
@@ -75,8 +82,9 @@ const char * const known_languages[] = {"acadian", "afrikaans", "albanian",
 "ngerman", "ngermanb", "norsk", "nynorsk", "polutonikogreek", "polish",
 "portuges", "portuguese", "romanian", "russian", "russianb", "samin",
 "scottish", "serbian", "serbian-latin", "slovak", "slovene", "spanish",
-"swedish", "thai", "turkish", "ukraineb", "ukrainian", "uppersorbian",
-"UKenglish", "USenglish", "usorbian", "vietnam", "welsh", 0};
+"swedish", "thai", "turkish", "turkmen", "ukraineb", "ukrainian",
+"uppersorbian", "UKenglish", "USenglish", "usorbian", "vietnam", "welsh",
+0};
 
 /**
  * the same as known_languages with .lyx names
@@ -94,21 +102,21 @@ const char * const known_coded_languages[] = {"french", "afrikaans", "albanian",
 "ngerman", "ngerman", "norsk", "nynorsk", "polutonikogreek", "polish",
 "portuguese", "portuguese", "romanian", "russian", "russian", "samin",
 "scottish", "serbian", "serbian-latin", "slovak", "slovene", "spanish",
-"swedish", "thai", "turkish", "ukrainian", "ukrainian", "uppersorbian",
-"uppersorbian", "english", "english", "vietnamese", "welsh", 0};
+"swedish", "thai", "turkish", "turkmen", "ukrainian", "ukrainian",
+"uppersorbian", "uppersorbian", "english", "english", "vietnamese", "welsh",
+0};
 
 /// languages with english quotes (.lyx names)
 const char * const known_english_quotes_languages[] = {"american", "bahasa",
 "bahasam", "brazilian", "canadian", "chinese-simplified", "english",
 "esperanto", "hebrew", "irish", "korean", "portuguese", "scottish", "thai", 0};
 
-//add this to known_french_quotes_languages when updating to
-//lyxformat 383: "turkmen"
 /// languages with french quotes (.lyx names)
 const char * const known_french_quotes_languages[] = {"albanian",
 "arabic_arabi", "arabic_arabtex", "basque", "canadien", "catalan", "french",
 "galician", "greek", "italian", "norsk", "nynorsk", "polutonikogreek",
-"russian", "spanish", "spanish-mexico", "turkish", "ukrainian", "vietnamese", 0};
+"russian", "spanish", "spanish-mexico", "turkish", "turkmen", "ukrainian",
+"vietnamese", 0};
 
 /// languages with german quotes (.lyx names)
 const char * const known_german_quotes_languages[] = {"austrian", "bulgarian",
@@ -123,10 +131,15 @@ const char * const known_polish_quotes_languages[] = {"afrikaans", "croatian",
 const char * const known_swedish_quotes_languages[] = {"finnish",
 "swedish", 0};
 
+/// known language packages from the times before babel
+const char * const known_old_language_packages[] = {"french", "frenchle",
+"frenchpro", "german", "ngerman", "pmfrench", 0};
+
 char const * const known_fontsizes[] = { "10pt", "11pt", "12pt", 0 };
 
-const char * const known_roman_fonts[] = { "ae", "bookman", "charter",
-"cmr", "fourier", "lmodern", "mathpazo", "mathptmx", "newcent", 0};
+const char * const known_roman_fonts[] = { "ae", "beraserif", "bookman",
+"ccfonts", "chancery", "charter", "cmr", "fourier", "lmodern", "mathpazo",
+"mathptmx", "newcent", "utopia", 0};
 
 const char * const known_sans_fonts[] = { "avant", "berasans", "cmbr", "cmss",
 "helvet", "lmss", 0};
@@ -135,9 +148,11 @@ const char * const known_typewriter_fonts[] = { "beramono", "cmtl", "cmtt",
 "courier", "lmtt", "luximono", "fourier", "lmodern", "mathpazo", "mathptmx",
 "newcent", 0};
 
-const char * const known_paper_sizes[] = { "a3paper", "b3paper", "a4paper",
-"b4paper", "a5paper", "b5paper", "executivepaper", "legalpaper",
-"letterpaper", 0};
+const char * const known_paper_sizes[] = { "a0paper", "b0paper", "c0paper",
+"a1paper", "b1paper", "c1paper", "a2paper", "b2paper", "c2paper", "a3paper",
+"b3paper", "c3paper", "a4paper", "b4paper", "c4paper", "a5paper", "b5paper",
+"c5paper", "a6paper", "b6paper", "c6paper", "executivepaper", "legalpaper",
+"letterpaper", "b0j", "b1j", "b2j", "b3j", "b4j", "b5j", "b6j", 0};
 
 const char * const known_class_paper_sizes[] = { "a4paper", "a5paper",
 "executivepaper", "legalpaper", "letterpaper", 0};
@@ -154,6 +169,12 @@ const char * const known_if_commands[] = {"if", "ifarydshln", "ifbraket",
 "ifcancel", "ifcolortbl", "ifeurosym", "ifmarginnote", "ifmmode", "ifpdf",
 "ifsidecap", "ifupgreek", 0};
 
+const char * const known_basic_colors[] = {"blue", "black", "cyan", "green",
+"magenta", "red", "white", "yellow", 0};
+
+const char * const known_basic_color_codes[] = {"#0000ff", "#000000", "#00ffff", "#00ff00",
+"#ff00ff", "#ff0000", "#ffffff", "#ffff00", 0};
+
 /// conditional commands with three arguments like \@ifundefined{}{}{}
 const char * const known_if_3arg_commands[] = {"@ifundefined", "IfFileExists",
 0};
@@ -164,7 +185,8 @@ string h_textclass               = "article";
 string h_use_default_options     = "false";
 string h_options;
 string h_language                = "english";
-string h_inputencoding           = "auto";
+string h_language_package        = "none";
+string h_fontencoding            = "default";
 string h_font_roman              = "default";
 string h_font_sans               = "default";
 string h_font_typewriter         = "default";
@@ -197,13 +219,20 @@ string h_papersize               = "default";
 string h_use_geometry            = "false";
 string h_use_amsmath             = "1";
 string h_use_esint               = "1";
+string h_use_mhchem              = "0";
+string h_use_mathdots            = "0";
+string h_use_undertilde          = "0";
 string h_cite_engine             = "basic";
 string h_use_bibtopic            = "false";
 string h_paperorientation        = "portrait";
+string h_suppress_date           = "false";
+string h_use_refstyle            = "0";
+string h_backgroundcolor;
+string h_boxbgcolor;
+string h_fontcolor;
 string h_notefontcolor;
 string h_secnumdepth             = "3";
 string h_tocdepth                = "3";
-string h_paragraph_separation    = "indent";
 string h_defskip                 = "medskip";
 string h_paragraph_indentation   = "default";
 string h_quotes_language         = "english";
@@ -213,6 +242,9 @@ string h_paperpagestyle          = "default";
 string h_listings_params;
 string h_tracking_changes        = "false";
 string h_output_changes          = "false";
+string h_html_math_output        = "0";
+string h_html_css_as_file        = "0";
+string h_html_be_strict          = "false";
 string h_margins;
 
 
@@ -273,7 +305,7 @@ vector<string> split_options(string const & input)
        while (p.good()) {
                Token const & t = p.get_token();
                if (t.asInput() == ",") {
-                       options.push_back(trim(option));
+                       options.push_back(trimSpaceAndEol(option));
                        option.erase();
                } else if (t.asInput() == "=") {
                        option += '=';
@@ -285,7 +317,7 @@ vector<string> split_options(string const & input)
        }
 
        if (!option.empty())
-               options.push_back(trim(option));
+               options.push_back(trimSpaceAndEol(option));
 
        return options;
 }
@@ -482,10 +514,14 @@ void handle_package(Parser &p, string const & name, string const & opts,
 
        // typewriter fonts
        if (is_known(name, known_typewriter_fonts)) {
-               h_font_typewriter = name;
-               if (!opts.empty()) {
-                       scale = opts;
-                       h_font_tt_scale = scale_as_percentage(scale);
+               // fourier can be set as roman font _only_
+               // fourier as typewriter is handled in handling of \ttdefault
+               if (name != "fourier") {
+                       h_font_typewriter = name;
+                       if (!opts.empty()) {
+                               scale = opts;
+                               h_font_tt_scale = scale_as_percentage(scale);
+                       }
                }
        }
 
@@ -493,30 +529,57 @@ void handle_package(Parser &p, string const & name, string const & opts,
        if (name == "eco")
                h_font_osf = "true";
 
+       // after the detection and handling of special cases, we can remove the
+       // fonts, otherwise they would appear in the preamble, see bug #7856
+       if (is_known(name, known_roman_fonts) || is_known(name, known_sans_fonts)
+               ||      is_known(name, known_typewriter_fonts))
+               ;
+
        else if (name == "amsmath" || name == "amssymb")
                h_use_amsmath = "2";
 
        else if (name == "esint")
                h_use_esint = "2";
 
-       else if (name == "babel" && !opts.empty()) {
-               // check if more than one option was used - used later for inputenc
-               // in case inputenc is parsed before babel, set the encoding to auto
-               if (options.begin() != options.end() - 1) {
-                       one_language = false;
-                       h_inputencoding = "auto";
+       else if (name == "mhchem")
+               h_use_mhchem = "2";
+
+       else if (name == "mathdots")
+               h_use_mathdots = "2";
+
+       else if (name == "undertilde")
+               h_use_undertilde = "2";
+
+       else if (name == "babel") {
+               h_language_package = "default";
+               // we have to do nothing if babel is loaded without any options, otherwise
+               // we would pollute the preamble with this call in every roundtrip
+               if (!opts.empty()) {
+                       // check if more than one option was used - used later for inputenc
+                       // in case inputenc is parsed before babel, set the encoding to auto
+                       if (options.begin() != options.end() - 1) {
+                               one_language = false;
+                               h_inputencoding = "auto";
+                       }
+                       // babel takes the last language of the option of its \usepackage
+                       // call as document language. If there is no such language option, the
+                       // last language in the documentclass options is used.
+                       handle_opt(options, known_languages, h_language);
+                       delete_opt(options, known_languages);
                }
-               // babel takes the last language of the option of its \usepackage
-               // call as document language. If there is no such language option, the
-               // last language in the documentclass options is used.
-               handle_opt(options, known_languages, h_language);
-               delete_opt(options, known_languages);
        }
 
-       else if (name == "fontenc")
-                ;// ignore this
+       else if (name == "fontenc") {
+               h_fontencoding = getStringFromVector(options, ",");
+               /* We could do the following for better round trip support,
+                * but this makes the document less portable, so I skip it:
+               if (h_fontencoding == lyxrc.fontenc)
+                       h_fontencoding = "global";
+               */
+               options.clear();
+       }
 
-       else if (name == "inputenc") {
+       else if (name == "inputenc" || name == "luainputenc") {
                // h_inputencoding is only set when there is not more than one
                // inputenc option because otherwise h_inputencoding must be
                // set to "auto" (the default encoding of the document language)
@@ -530,6 +593,13 @@ void handle_package(Parser &p, string const & name, string const & opts,
                options.clear();
        }
 
+       else if (is_known(name, known_old_language_packages)) {
+               // known language packages from the times before babel
+               // if they are found and not also babel, they will be used as
+               // cutom language package
+               h_language_package = "\\usepackage{" + name + "}";
+       }
+
        else if (name == "makeidx")
                ; // ignore this
 
@@ -551,13 +621,15 @@ void handle_package(Parser &p, string const & name, string const & opts,
        else if (name == "url")
                ; // ignore this
 
-       else if (LYX_FORMAT >= 408 && name == "subscript")
+       else if (name == "subscript")
                ; // ignore this
 
        else if (name == "color") {
                // with the following command this package is only loaded when needed for
                // undefined colors, since we only support the predefined colors
-               h_preamble << "\\@ifundefined{definecolor}\n {\\usepackage{color}}{}\n";
+               // only add it if not yet added
+               if (!ifundefined_color_set)
+                       h_preamble << "\\@ifundefined{definecolor}\n {\\usepackage{color}}{}\n";
        }
 
        else if (name == "graphicx")
@@ -566,10 +638,25 @@ void handle_package(Parser &p, string const & name, string const & opts,
        else if (name == "setspace")
                ; // ignore this
 
+#if 0
+       // do not ignore as long as we don't support all commands (e.g. \xout is missing)
+       else if (name == "ulem")
+               ; // ignore this
+#endif
+
        else if (name == "geometry")
                ; // Ignore this, the geometry settings are made by the \geometry
                  // command. This command is handled below.
 
+       else if (name == "rotfloat")
+               ; // ignore this
+
+       else if (name == "wrapfig")
+               ; // ignore this
+
+       else if (name == "subfig")
+               ; // ignore this
+
        else if (is_known(name, known_languages))
                h_language = name;
 
@@ -674,8 +761,11 @@ void end_preamble(ostream & os, TextClass const & /*textclass*/)
        if (!h_options.empty())
                os << "\\options " << h_options << "\n";
        os << "\\use_default_options " << h_use_default_options << "\n"
+          << modules_placeholder
           << "\\language " << h_language << "\n"
+          << "\\language_package " << h_language_package << "\n"
           << "\\inputencoding " << h_inputencoding << "\n"
+          << "\\fontencoding " << h_fontencoding << "\n"
           << "\\font_roman " << h_font_roman << "\n"
           << "\\font_sans " << h_font_sans << "\n"
           << "\\font_typewriter " << h_font_typewriter << "\n"
@@ -717,16 +807,27 @@ void end_preamble(ostream & os, TextClass const & /*textclass*/)
           << "\\use_geometry " << h_use_geometry << "\n"
           << "\\use_amsmath " << h_use_amsmath << "\n"
           << "\\use_esint " << h_use_esint << "\n"
+          << "\\use_mhchem " << h_use_mhchem << "\n"
+          << "\\use_mathdots " << h_use_mathdots << "\n"
+          << "\\use_undertilde " << h_use_undertilde << "\n"
           << "\\cite_engine " << h_cite_engine << "\n"
           << "\\use_bibtopic " << h_use_bibtopic << "\n"
-          << "\\paperorientation " << h_paperorientation << '\n';
-       if (LYX_FORMAT >= 382 && !h_notefontcolor.empty())
+          << "\\paperorientation " << h_paperorientation << '\n'
+          << "\\suppress_date " << h_suppress_date << '\n'
+          << "\\use_refstyle " << h_use_refstyle << '\n';
+       if (!h_fontcolor.empty())
+               os << "\\fontcolor " << h_fontcolor << '\n';
+       if (!h_notefontcolor.empty())
                os << "\\notefontcolor " << h_notefontcolor << '\n';
+       if (!h_backgroundcolor.empty())
+               os << "\\backgroundcolor " << h_backgroundcolor << '\n';
+       if (!h_boxbgcolor.empty())
+               os << "\\boxbgcolor " << h_boxbgcolor << '\n';
        os << h_margins
           << "\\secnumdepth " << h_secnumdepth << "\n"
           << "\\tocdepth " << h_tocdepth << "\n"
           << "\\paragraph_separation " << h_paragraph_separation << "\n";
-       if (LYX_FORMAT < 365 || h_paragraph_separation == "skip")
+       if (h_paragraph_separation == "skip")
                os << "\\defskip " << h_defskip << "\n";
        else
                os << "\\paragraph_indentation " << h_paragraph_indentation << "\n";
@@ -738,6 +839,9 @@ void end_preamble(ostream & os, TextClass const & /*textclass*/)
                os << "\\listings_params " << h_listings_params << "\n";
        os << "\\tracking_changes " << h_tracking_changes << "\n"
           << "\\output_changes " << h_output_changes << "\n"
+          << "\\html_math_output " << h_html_math_output << "\n"
+          << "\\html_css_as_file " << h_html_css_as_file << "\n"
+          << "\\html_be_strict " << h_html_be_strict << "\n"
           << "\\end_header\n\n"
           << "\\begin_body\n";
        // clear preamble for subdocuments
@@ -795,7 +899,6 @@ void parse_preamble(Parser & p, ostream & os,
                        h_preamble << t.asInput();
 
                else if (t.cat() == catComment) {
-                       // regex to parse comments (currently not used)
                        static regex const islyxfile("%% LyX .* created this file");
                        static regex const usercommands("User specified LaTeX commands");
 
@@ -824,6 +927,46 @@ void parse_preamble(Parser & p, ostream & os,
                else if (t.cs() == "pagestyle")
                        h_paperpagestyle = p.verbatim_item();
 
+               else if (t.cs() == "date") {
+                       string argument = p.getArg('{', '}');
+                       if (argument.empty())
+                               h_suppress_date = "true";
+                       else
+                               h_preamble << t.asInput() << '{' << argument << '}';
+               }
+
+               else if (t.cs() == "color") {
+                       string argument = p.getArg('{', '}');
+                       // check the case that a standard color is used
+                       if (is_known(argument, known_basic_colors))
+                               h_fontcolor = color2code(argument);
+                       // check the case that LyX's document_fontcolor is defined
+                       // but not used for \color
+                       if (argument != "document_fontcolor"
+                               && !is_known(argument, known_basic_colors)) {
+                               h_preamble << t.asInput() << '{' << argument << '}';
+                               // the color might already be set because \definecolor
+                               // is parsed before this
+                               h_fontcolor = "";
+                       }
+               }
+
+               else if (t.cs() == "pagecolor") {
+                       string argument = p.getArg('{', '}');
+                       // check the case that a standard color is used
+                       if (is_known(argument, known_basic_colors))
+                               h_backgroundcolor = color2code(argument);
+                       // check the case that LyX's page_backgroundcolor is defined
+                       // but not used for \pagecolor
+                       if (argument != "page_backgroundcolor"
+                               && !is_known(argument, known_basic_colors)) {
+                               h_preamble << t.asInput() << '{' << argument << '}';
+                               // the color might already be set because \definecolor
+                               // is parsed before this
+                               h_backgroundcolor = "";
+                       }
+               }
+
                else if (t.cs() == "makeatletter") {
                        // LyX takes care of this
                        p.setCatCode('@', catLetter);
@@ -834,9 +977,11 @@ void parse_preamble(Parser & p, ostream & os,
                        p.setCatCode('@', catOther);
                }
 
-               else if (t.cs() == "newcommand" || t.cs() == "renewcommand"
-                           || t.cs() == "providecommand"
+               else if (t.cs() == "newcommand" || t.cs() == "newcommandx"
+                     || t.cs() == "renewcommand" || t.cs() == "renewcommandx"
+                     || t.cs() == "providecommand" || t.cs() == "providecommandx"
                                || t.cs() == "DeclareRobustCommand"
+                     || t.cs() == "DeclareRobustCommandx"
                                || t.cs() == "ProvideTextCommandDefault"
                                || t.cs() == "DeclareMathAccent") {
                        bool star = false;
@@ -845,7 +990,7 @@ void parse_preamble(Parser & p, ostream & os,
                                star = true;
                        }
                        string const name = p.verbatim_item();
-                       string const opt1 = p.getOpt();
+                       string const opt1 = p.getFullOpt();
                        string const opt2 = p.getFullOpt();
                        string const body = p.verbatim_item();
                        // font settings
@@ -863,6 +1008,10 @@ void parse_preamble(Parser & p, ostream & os,
                                // remove leading "\"
                                h_font_default_family = family.erase(0,1);
                        }
+
+                       // Add the command to the known commands
+                       add_known_command(name, opt1, !opt2.empty(), from_utf8(body));
+
                        // only non-lyxspecific stuff
                        if (!in_lyx_preamble) {
                                ostringstream ss;
@@ -872,9 +1021,6 @@ void parse_preamble(Parser & p, ostream & os,
                                ss << '{' << name << '}' << opt1 << opt2
                                   << '{' << body << "}";
                                h_preamble << ss.str();
-
-                               // Add the command to the known commands
-                               add_known_command(name, opt1, !opt2.empty());
 /*
                                ostream & out = in_preamble ? h_preamble : os;
                                out << "\\" << t.cs() << "{" << name << "}"
@@ -897,7 +1043,7 @@ void parse_preamble(Parser & p, ostream & os,
                        // options.
                        handle_opt(opts, known_languages, h_language);
                        delete_opt(opts, known_languages);
-                       
+
                        // paper orientation
                        if ((it = find(opts.begin(), opts.end(), "landscape")) != opts.end()) {
                                h_paperorientation = "landscape";
@@ -932,6 +1078,8 @@ void parse_preamble(Parser & p, ostream & os,
                        delete_opt(opts, known_class_paper_sizes);
                        // the remaining options
                        h_options = join(opts, ",");
+                       // FIXME This does not work for classes that have a
+                       //       different name in LyX than in LaTeX
                        h_textclass = p.getArg('{', '}');
                }
 
@@ -943,7 +1091,7 @@ void parse_preamble(Parser & p, ostream & os,
                        vector<string>::const_iterator it  = vecnames.begin();
                        vector<string>::const_iterator end = vecnames.end();
                        for (; it != end; ++it)
-                               handle_package(p, trim(*it), options, 
+                               handle_package(p, trimSpaceAndEol(*it), options, 
                                               in_lyx_preamble);
                }
 
@@ -955,14 +1103,18 @@ void parse_preamble(Parser & p, ostream & os,
 
                else if (t.cs() == "newenvironment") {
                        string const name = p.getArg('{', '}');
-                       ostringstream ss;
-                       ss << "\\newenvironment{" << name << "}";
-                       ss << p.getOpt();
-                       ss << p.getOpt();
-                       ss << '{' << p.verbatim_item() << '}';
-                       ss << '{' << p.verbatim_item() << '}';
-                       if (!in_lyx_preamble)
-                               h_preamble << ss.str();
+                       string const opt1 = p.getFullOpt();
+                       string const opt2 = p.getFullOpt();
+                       string const beg = p.verbatim_item();
+                       string const end = p.verbatim_item();
+                       if (!in_lyx_preamble) {
+                               h_preamble << "\\newenvironment{" << name
+                                          << '}' << opt1 << opt2 << '{'
+                                          << beg << "}{" << end << '}';
+                       }
+                       add_known_environment(name, opt1, !opt2.empty(),
+                                             from_utf8(beg), from_utf8(end));
+
                }
 
                else if (t.cs() == "def") {
@@ -976,7 +1128,7 @@ void parse_preamble(Parser & p, ostream & os,
 
                else if (t.cs() == "newcolumntype") {
                        string const name = p.getArg('{', '}');
-                       trim(name);
+                       trimSpaceAndEol(name);
                        int nargs = 0;
                        string opts = p.getOpt();
                        if (!opts.empty()) {
@@ -1008,11 +1160,8 @@ void parse_preamble(Parser & p, ostream & os,
                        if (name == "\\parindent" && content != "") {
                                if (content[0] == '0')
                                        h_paragraph_separation = "skip";
-                               else if (LYX_FORMAT >= 365)
-                                       h_paragraph_indentation = translate_len(content);
                                else
-                                       h_preamble << "\\setlength{" << name
-                                                  << "}{" << content << "}";
+                                       h_paragraph_indentation = translate_len(content);
                        } else if (name == "\\parskip") {
                                if (content == "\\smallskipamount")
                                        h_defskip = "smallskip";
@@ -1075,10 +1224,18 @@ void parse_preamble(Parser & p, ostream & os,
                        string const color = p.getArg('{', '}');
                        string const space = p.getArg('{', '}');
                        string const value = p.getArg('{', '}');
-                       if (LYX_FORMAT >= 382 &&
-                           color == "note_fontcolor" && space == "rgb") {
+                       if (color == "document_fontcolor" && space == "rgb") {
+                               RGBColor c(RGBColorFromLaTeX(value));
+                               h_fontcolor = X11hexname(c);
+                       } else if (color == "note_fontcolor" && space == "rgb") {
                                RGBColor c(RGBColorFromLaTeX(value));
                                h_notefontcolor = X11hexname(c);
+                       } else if (color == "page_backgroundcolor" && space == "rgb") {
+                               RGBColor c(RGBColorFromLaTeX(value));
+                               h_backgroundcolor = X11hexname(c);
+                       } else if (color == "shadecolor" && space == "rgb") {
+                               RGBColor c(RGBColorFromLaTeX(value));
+                               h_boxbgcolor = X11hexname(c);
                        } else {
                                h_preamble << "\\definecolor{" << color
                                           << "}{" << space << "}{" << value
@@ -1118,7 +1275,22 @@ void parse_preamble(Parser & p, ostream & os,
                        string const arg1 = p.verbatim_item();
                        string const arg2 = p.verbatim_item();
                        string const arg3 = p.verbatim_item();
-                       if (!in_lyx_preamble) {
+                       // test case \@ifundefined{date}{}{\date{}}
+                       if (arg1 == "date" && arg2.empty() && arg3 == "\\date{}") {
+                               h_suppress_date = "true";
+                       // test case \@ifundefined{definecolor}{\usepackage{color}}{}
+                       // because we could pollute the preamble with it in roundtrips
+                       } else if (arg1 == "definecolor" && arg2 == "\\usepackage{color}"
+                               && arg3.empty()) {
+                               ifundefined_color_set = true;
+                       // test for case
+                       //\@ifundefined{showcaptionsetup}{}{%
+                       // \PassOptionsToPackage{caption=false}{subfig}}
+                       // that LyX uses for subfloats
+                       } else if (arg1 == "showcaptionsetup" && arg2.empty()
+                               && arg3 == "%\n \\PassOptionsToPackage{caption=false}{subfig}") {
+                               ; // do nothing
+                       } else if (!in_lyx_preamble) {
                                h_preamble << t.asInput()
                                           << '{' << arg1 << '}'
                                           << '{' << arg2 << '}'
@@ -1146,12 +1318,11 @@ void parse_preamble(Parser & p, ostream & os,
                h_textclass = forceclass;
        if (noweb_mode && !prefixIs(h_textclass, "literate-"))
                h_textclass.insert(0, "literate-");
-       FileName layoutfilename = libFileSearch("layouts", h_textclass, "layout");
-       if (layoutfilename.empty()) {
-               cerr << "Error: Could not find layout file for textclass \"" << h_textclass << "\"." << endl;
-               exit(1);
+       tc.setName(h_textclass);
+       if (!tc.load()) {
+               cerr << "Error: Could not read layout file for textclass \"" << h_textclass << "\"." << endl;
+               exit(EXIT_FAILURE);
        }
-       tc.read(layoutfilename);
        if (h_papersides.empty()) {
                ostringstream ss;
                ss << tc.sides();
@@ -1170,6 +1341,16 @@ string babel2lyx(string const & language)
        return language;
 }
 
+
+/// translates a color name to a LyX color code
+string color2code(string const & name)
+{
+       char const * const * where = is_known(name, known_basic_colors);
+       if (where)
+               return known_basic_color_codes[where - known_basic_colors];
+       return name;
+}
+
 // }])