src/LaTeXFeatures.C

   1 /**
   2  * \file LaTeXFeatures.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author José Matos
   7  * \author Lars Gullik Bjønnes
   8  * \author Jean-Marc Lasgouttes
   9  * \author Jürgen Vigna
  10  * \author André Pönitz
  11  *
  12  * Full author contact details are available in file CREDITS.
  13  */
  14
  15 #include <config.h>
  16
  17 #include "LaTeXFeatures.h"
  18 #include "debug.h"
  19 #include "lyx_sty.h"
  20 #include "lyxrc.h"
  21 #include "bufferparams.h"
  22 #include "Floating.h"
  23 #include "FloatList.h"
  24 #include "language.h"
  25 #include "encoding.h"
  26 #include "LString.h"
  27 #include "Lsstream.h"
  28
  29 #include "support/filetools.h"
  30 #include "support/lstrings.h"
  31
  32 using namespace lyx::support;
  33
  34 using lyx::textclass_type;
  35
  36 using std::endl;
  37 using std::list;
  38 using std::set;
  39 using std::find;
  40 using std::ostream;
  41
  42
  43 LaTeXFeatures::LaTeXFeatures(BufferParams const & p)
  44         : params(p)
  45 {}
  46
  47
  48 bool LaTeXFeatures::useBabel() const
  49 {
  50         return lyxrc.language_use_babel ||
  51                 bufferParams().language->lang() != lyxrc.default_language ||
  52                 this->hasLanguages();
  53 }
  54
  55
  56 void LaTeXFeatures::require(string const & name)
  57 {
  58         if (isRequired(name))
  59                 return;
  60
  61         features.push_back(name);
  62 }
  63
  64
  65 void LaTeXFeatures::useLayout(string const & layoutname)
  66 {
  67         // Some code to avoid loops in dependency definition
  68         static int level = 0;
  69         const int maxlevel = 30;
  70         if (level > maxlevel) {
  71                 lyxerr << "LaTeXFeatures::useLayout: maximum level of "
  72                        << "recursion attained by layout "
  73                        << layoutname << endl;
  74                 return;
  75         }
  76
  77         LyXTextClass const & tclass = params.getLyXTextClass();
  78         if (tclass.hasLayout(layoutname)) {
  79                 // Is this layout already in usedLayouts?
  80                 list<string>::const_iterator cit = usedLayouts.begin();
  81                 list<string>::const_iterator end = usedLayouts.end();
  82                 for (; cit != end; ++cit) {
  83                         if (layoutname == *cit)
  84                                 return;
  85                 }
  86
  87                 LyXLayout_ptr const & lyt = tclass[layoutname];
  88                 if (!lyt->depends_on().empty()) {
  89                         ++level;
  90                         useLayout(lyt->depends_on());
  91                         --level;
  92                 }
  93                 usedLayouts.push_back(layoutname);
  94         } else {
  95                 lyxerr << "LaTeXFeatures::useLayout: layout `"
  96                        << layoutname << "' does not exist in this class"
  97                        << endl;
  98         }
  99
 100         --level;
 101 }
 102
 103
 104 bool LaTeXFeatures::isRequired(string const & name) const
 105 {
 106         return find(features.begin(), features.end(), name) != features.end();
 107 }
 108
 109
 110 void LaTeXFeatures::addExternalPreamble(string const & preamble)
 111 {
 112         FeaturesList::const_iterator begin = preamble_snippets.begin();
 113         FeaturesList::const_iterator end   = preamble_snippets.end();
 114         if (find(begin, end, preamble) == end)
 115                 preamble_snippets.push_back(preamble);
 116 }
 117
 118
 119 void LaTeXFeatures::useFloat(string const & name)
 120 {
 121         usedFloats.insert(name);
 122         // We only need float.sty if we use non builtin floats, or if we
 123         // use the "H" modifier. This includes modified table and
 124         // figure floats. (Lgb)
 125         Floating const & fl = params.getLyXTextClass().floats().getType(name);
 126         if (!fl.type().empty() && !fl.builtin()) {
 127                 require("float");
 128         }
 129 }
 130
 131
 132 void LaTeXFeatures::useLanguage(Language const * lang)
 133 {
 134         UsedLanguages.insert(lang);
 135 }
 136
 137
 138 void LaTeXFeatures::includeFile(string const & key, string const & name)
 139 {
 140         IncludedFiles[key] = name;
 141 }
 142
 143
 144 bool LaTeXFeatures::hasLanguages() const
 145 {
 146         return !UsedLanguages.empty();
 147 }
 148
 149
 150 string LaTeXFeatures::getLanguages() const
 151 {
 152         ostringstream languages;
 153
 154         for (LanguageList::const_iterator cit =
 155                     UsedLanguages.begin();
 156              cit != UsedLanguages.end();
 157              ++cit)
 158                 languages << (*cit)->babel() << ',';
 159
 160         return STRCONV(languages.str());
 161 }
 162
 163
 164 set<string> LaTeXFeatures::getEncodingSet(string const & doc_encoding) const
 165 {
 166         set<string> encodings;
 167         for (LanguageList::const_iterator it =
 168                      UsedLanguages.begin();
 169              it != UsedLanguages.end(); ++it)
 170                 if ((*it)->encoding()->LatexName() != doc_encoding)
 171                         encodings.insert((*it)->encoding()->LatexName());
 172         return encodings;
 173 }
 174
 175 namespace {
 176
 177 char const * simplefeatures[] = {
 178         "array",
 179         "verbatim",
 180         "longtable",
 181         "rotating",
 182         "latexsym",
 183         "pifont",
 184         "subfigure",
 185         "floatflt",
 186         "varioref",
 187         "prettyref",
 188         "float",
 189         "wasy",
 190         "dvipost"
 191 };
 192
 193 int const nb_simplefeatures = sizeof(simplefeatures) / sizeof(char const *);
 194
 195 }
 196
 197
 198 string const LaTeXFeatures::getPackages() const
 199 {
 200         ostringstream packages;
 201         LyXTextClass const & tclass = params.getLyXTextClass();
 202
 203         //
 204         //  These are all the 'simple' includes.  i.e
 205         //  packages which we just \usepackage{package}
 206         //
 207         for (int i = 0; i < nb_simplefeatures; ++i) {
 208                 if (isRequired(simplefeatures[i]))
 209                         packages << "\\usepackage{"
 210                                  << simplefeatures[i] << "}\n";
 211         }
 212
 213         //
 214         // The rest of these packages are somewhat more complicated
 215         // than those above.
 216         //
 217
 218         if (isRequired("amsmath")
 219             && !tclass.provides(LyXTextClass::amsmath)
 220             && params.use_amsmath != BufferParams::AMS_OFF) {
 221                 packages << "\\usepackage{amsmath}\n";
 222         }
 223
 224         // color.sty
 225         if (isRequired("color")) {
 226                 if (params.graphicsDriver == "default")
 227                         packages << "\\usepackage[usenames]{color}\n";
 228                 else
 229                         packages << "\\usepackage["
 230                                  << params.graphicsDriver
 231                                  << ",usenames"
 232                                  << "]{color}\n";
 233         }
 234
 235         // makeidx.sty
 236         if (isRequired("makeidx")) {
 237                 if (! tclass.provides(LyXTextClass::makeidx))
 238                         packages << "\\usepackage{makeidx}\n";
 239                 packages << "\\makeindex\n";
 240         }
 241
 242         // graphicx.sty
 243         if (isRequired("graphicx") && params.graphicsDriver != "none") {
 244                 if (params.graphicsDriver == "default")
 245                         packages << "\\usepackage{graphicx}\n";
 246                 else
 247                         packages << "\\usepackage["
 248                                  << params.graphicsDriver
 249                                  << "]{graphicx}\n";
 250         }
 251
 252         //if (algorithm) {
 253         //      packages << "\\usepackage{algorithm}\n";
 254         //}
 255
 256         // lyxskak.sty --- newer chess support based on skak.sty
 257         if (isRequired("chess")) {
 258                 packages << "\\usepackage[ps,mover]{lyxskak}\n";
 259         }
 260
 261         // setspace.sty
 262         if ((params.spacing.getSpace() != Spacing::Single
 263              && !params.spacing.isDefault())
 264             || isRequired("setspace")) {
 265                 packages << "\\usepackage{setspace}\n";
 266         }
 267         switch (params.spacing.getSpace()) {
 268         case Spacing::Default:
 269         case Spacing::Single:
 270                 // we dont use setspace.sty so dont print anything
 271                 //packages += "\\singlespacing\n";
 272                 break;
 273         case Spacing::Onehalf:
 274                 packages << "\\onehalfspacing\n";
 275                 break;
 276         case Spacing::Double:
 277                 packages << "\\doublespacing\n";
 278                 break;
 279         case Spacing::Other:
 280                 packages << "\\setstretch{"
 281                          << params.spacing.getValue() << "}\n";
 282                 break;
 283         }
 284
 285         // amssymb.sty
 286         if (isRequired("amssymb") || params.use_amsmath == BufferParams::AMS_ON)
 287                 packages << "\\usepackage{amssymb}\n";
 288         // url.sty
 289         if (isRequired("url") && ! tclass.provides(LyXTextClass::url))
 290                 packages << "\\IfFileExists{url.sty}{\\usepackage{url}}\n"
 291                             "                      {\\newcommand{\\url}{\\texttt}}\n";
 292
 293         // float.sty
 294         // natbib.sty
 295         if (isRequired("natbib") && ! tclass.provides(LyXTextClass::natbib)) {
 296                 packages << "\\usepackage[";
 297                 if (params.use_numerical_citations) {
 298                         packages << "numbers";
 299                 } else {
 300                         packages << "authoryear";
 301                 }
 302                 packages << "]{natbib}\n";
 303         }
 304
 305         FeaturesList::const_iterator pit  = preamble_snippets.begin();
 306         FeaturesList::const_iterator pend = preamble_snippets.end();
 307         for (; pit != pend; ++pit) {
 308                 packages << *pit << '\n';
 309         }
 310
 311         return STRCONV(packages.str());
 312 }
 313
 314
 315 string const LaTeXFeatures::getMacros() const
 316 {
 317         ostringstream macros;
 318
 319         if (isRequired("LyX"))
 320                 macros << lyx_def << '\n';
 321
 322         if (isRequired("lyxline"))
 323                 macros << lyxline_def << '\n';
 324
 325         if (isRequired("noun"))
 326                 macros << noun_def << '\n';
 327
 328         if (isRequired("lyxarrow"))
 329                 macros << lyxarrow_def << '\n';
 330
 331         // quotes.
 332         if (isRequired("quotesinglbase"))
 333                 macros << quotesinglbase_def << '\n';
 334         if (isRequired("quotedblbase"))
 335                 macros << quotedblbase_def << '\n';
 336         if (isRequired("guilsinglleft"))
 337                 macros << guilsinglleft_def << '\n';
 338         if (isRequired("guilsinglright"))
 339                 macros << guilsinglright_def << '\n';
 340         if (isRequired("guillemotleft"))
 341                 macros << guillemotleft_def << '\n';
 342         if (isRequired("guillemotright"))
 343                 macros << guillemotright_def << '\n';
 344
 345         // Math mode
 346         if (isRequired("boldsymbol") && !isRequired("amsmath"))
 347                 macros << boldsymbol_def << '\n';
 348         if (isRequired("binom") && !isRequired("amsmath"))
 349                 macros << binom_def << '\n';
 350         if (isRequired("mathcircumflex"))
 351                 macros << mathcircumflex_def << '\n';
 352
 353         // other
 354         if (isRequired("NeedLyXMinipageIndent"))
 355                 macros << minipageindent_def;
 356         if (isRequired("ParagraphLeftIndent"))
 357                 macros << paragraphleftindent_def;
 358         if (isRequired("NeedLyXFootnoteCode"))
 359                 macros << floatingfootnote_def;
 360
 361         // some problems with tex->html converters
 362         if (isRequired("NeedTabularnewline"))
 363                 macros << tabularnewline_def;
 364
 365         // greyedout environment (note inset)
 366         if (isRequired("lyxgreyedout"))
 367                 macros << lyxgreyedout_def;
 368
 369         // floats
 370         getFloatDefinitions(macros);
 371
 372         return STRCONV(macros.str());
 373 }
 374
 375
 376 string const LaTeXFeatures::getBabelOptions() const
 377 {
 378         ostringstream tmp;
 379
 380         for (LanguageList::const_iterator cit = UsedLanguages.begin();
 381              cit != UsedLanguages.end(); ++cit)
 382                 if (!(*cit)->latex_options().empty())
 383                         tmp << (*cit)->latex_options() << '\n';
 384         if (!params.language->latex_options().empty())
 385                 tmp << params.language->latex_options() << '\n';
 386
 387         return STRCONV(tmp.str());
 388 }
 389
 390
 391 string const LaTeXFeatures::getTClassPreamble() const
 392 {
 393         // the text class specific preamble
 394         LyXTextClass const & tclass = params.getLyXTextClass();
 395         ostringstream tcpreamble;
 396
 397         tcpreamble << tclass.preamble();
 398
 399         list<string>::const_iterator cit = usedLayouts.begin();
 400         list<string>::const_iterator end = usedLayouts.end();
 401         for (; cit != end; ++cit) {
 402                 tcpreamble << tclass[*cit]->preamble();
 403         }
 404
 405         return STRCONV(tcpreamble.str());
 406 }
 407
 408
 409 string const LaTeXFeatures::getLyXSGMLEntities() const
 410 {
 411         // Definition of entities used in the document that are LyX related.
 412         ostringstream entities;
 413
 414         if (isRequired("lyxarrow")) {
 415                 entities << "<!ENTITY lyxarrow \"-&gt;\">" << '\n';
 416         }
 417
 418         return STRCONV(entities.str());
 419 }
 420
 421
 422 string const LaTeXFeatures::getIncludedFiles(string const & fname) const
 423 {
 424         ostringstream sgmlpreamble;
 425         string const basename = OnlyPath(fname);
 426
 427         FileMap::const_iterator end = IncludedFiles.end();
 428         for (FileMap::const_iterator fi = IncludedFiles.begin();
 429              fi != end; ++fi)
 430                 sgmlpreamble << "\n<!ENTITY " << fi->first
 431                              << (IsSGMLFilename(fi->second) ? " SYSTEM \"" : " \"")
 432                              << MakeRelPath(fi->second, basename) << "\">";
 433
 434         return STRCONV(sgmlpreamble.str());
 435 }
 436
 437
 438 void LaTeXFeatures::showStruct() const {
 439         lyxerr << "LyX needs the following commands when LaTeXing:"
 440                << "\n***** Packages:" << getPackages()
 441                << "\n***** Macros:" << getMacros()
 442                << "\n***** Textclass stuff:" << getTClassPreamble()
 443                << "\n***** done." << endl;
 444 }
 445
 446
 447 BufferParams const & LaTeXFeatures::bufferParams() const
 448 {
 449         return params;
 450 }
 451
 452
 453 void LaTeXFeatures::getFloatDefinitions(ostream & os) const
 454 {
 455         FloatList const & floats = params.getLyXTextClass().floats();
 456
 457         // Here we will output the code to create the needed float styles.
 458         // We will try to do this as minimal as possible.
 459         // \floatstyle{ruled}
 460         // \newfloat{algorithm}{htbp}{loa}
 461         // \floatname{algorithm}{Algorithm}
 462         UsedFloats::const_iterator cit = usedFloats.begin();
 463         UsedFloats::const_iterator end = usedFloats.end();
 464         // ostringstream floats;
 465         for (; cit != end; ++cit) {
 466                 Floating const & fl = floats.getType((*cit));
 467
 468                 // For builtin floats we do nothing.
 469                 if (fl.builtin()) continue;
 470
 471                 // We have to special case "table" and "figure"
 472                 if (fl.type() == "tabular" || fl.type() == "figure") {
 473                         // Output code to modify "table" or "figure"
 474                         // but only if builtin == false
 475                         // and that have to be true at this point in the
 476                         // function.
 477                         string const type = fl.type();
 478                         string const placement = fl.placement();
 479                         string const style = fl.style();
 480                         if (!style.empty()) {
 481                                 os << "\\floatstyle{" << style << "}\n"
 482                                    << "\\restylefloat{" << type << "}\n";
 483                         }
 484                         if (!placement.empty()) {
 485                                 os << "\\floatplacement{" << type << "}{"
 486                                    << placement << "}\n";
 487                         }
 488                 } else {
 489                         // The other non builtin floats.
 490
 491                         string const type = fl.type();
 492                         string const placement = fl.placement();
 493                         string const ext = fl.ext();
 494                         string const within = fl.within();
 495                         string const style = fl.style();
 496                         string const name = fl.name();
 497                         os << "\\floatstyle{" << style << "}\n"
 498                            << "\\newfloat{" << type << "}{" << placement
 499                            << "}{" << ext << '}';
 500                         if (!within.empty())
 501                                 os << '[' << within << ']';
 502                         os << '\n'
 503                            << "\\floatname{" << type << "}{"
 504                            << name << "}\n";
 505
 506                         // What missing here is to code to minimalize the code
 507                         // output so that the same floatstyle will not be
 508                         // used several times, when the same style is still in
 509                         // effect. (Lgb)
 510                 }
 511         }
 512 }