src/mathed/MathFactory.cpp

   1 /**
   2  * \file MathFactory.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "MathFactory.h"
  14
  15 #include "InsetMathAMSArray.h"
  16 #include "InsetMathArray.h"
  17 #include "InsetMathBinom.h"
  18 #include "InsetMathBoldSymbol.h"
  19 #include "InsetMathBoxed.h"
  20 #include "InsetMathBox.h"
  21 #include "InsetMathCases.h"
  22 #include "InsetMathColor.h"
  23 #include "InsetMathDecoration.h"
  24 #include "InsetMathDFrac.h"
  25 #include "InsetMathDots.h"
  26 #include "InsetMathFBox.h"
  27 #include "InsetMathFont.h"
  28 #include "InsetMathFontOld.h"
  29 #include "InsetMathFrac.h"
  30 #include "InsetMathFrameBox.h"
  31 #include "InsetMathKern.h"
  32 #include "InsetMathLefteqn.h"
  33 #include "InsetMathMacro.h"
  34 #include "InsetMathMakebox.h"
  35 #include "InsetMathOverset.h"
  36 #include "InsetMathPhantom.h"
  37 #include "InsetMathRef.h"
  38 #include "InsetMathRoot.h"
  39 #include "InsetMathSize.h"
  40 #include "InsetMathSpace.h"
  41 #include "InsetMathSplit.h"
  42 #include "InsetMathSqrt.h"
  43 #include "InsetMathStackrel.h"
  44 #include "InsetMathSubstack.h"
  45 #include "InsetMathSymbol.h"
  46 #include "InsetMathTabular.h"
  47 #include "InsetMathTFrac.h"
  48 #include "InsetMathUnderset.h"
  49 #include "InsetMathUnknown.h"
  50 #include "InsetMathXArrow.h"
  51 #include "InsetMathXYMatrix.h"
  52 #include "MathMacroArgument.h"
  53 #include "MathMacroTable.h"
  54 #include "MathParser.h"
  55 #include "MathSupport.h"
  56
  57 #include "debug.h"
  58
  59 #include "insets/InsetCommand.h"
  60
  61 #include "support/filetools.h" // LibFileSearch
  62 #include "support/lstrings.h"
  63
  64 #include "frontends/FontLoader.h"
  65
  66
  67 namespace lyx {
  68
  69 using support::libFileSearch;
  70 using support::split;
  71
  72 using std::string;
  73 using std::endl;
  74 using std::istringstream;
  75 using std::vector;
  76
  77 bool has_math_fonts;
  78
  79
  80 namespace {
  81
  82 // file scope
  83 typedef std::map<docstring, latexkeys> WordList;
  84
  85 WordList theWordList;
  86
  87
  88 bool math_font_available(docstring & name)
  89 {
  90         LyXFont f;
  91         augmentFont(f, name);
  92
  93         // Do we have the font proper?
  94         if (theFontLoader().available(f))
  95                 return true;
  96
  97         // can we fake it?
  98         if (name == "eufrak") {
  99                 name = from_ascii("lyxfakefrak");
 100                 return true;
 101         }
 102
 103         LYXERR(Debug::MATHED)
 104                 << "font " << to_utf8(name) << " not available and I can't fake it"
 105                 << endl;
 106         return false;
 107 }
 108
 109
 110 void initSymbols()
 111 {
 112         support::FileName const filename = libFileSearch(string(), "symbols");
 113         LYXERR(Debug::MATHED) << "read symbols from " << filename << endl;
 114         if (filename.empty()) {
 115                 lyxerr << "Could not find symbols file" << endl;
 116                 return;
 117         }
 118
 119         std::ifstream fs(filename.toFilesystemEncoding().c_str());
 120         string line;
 121         bool skip = false;
 122         while (getline(fs, line)) {
 123                 int charid     = 0;
 124                 int fallbackid = 0;
 125                 if (line.empty() || line[0] == '#')
 126                         continue;
 127
 128                 // special case of iffont/else/endif
 129                 if (line.size() >= 7 && line.substr(0, 6) == "iffont") {
 130                         istringstream is(line);
 131                         string tmp;
 132                         is >> tmp;
 133                         is >> tmp;
 134                         docstring t = from_utf8(tmp);
 135                         skip = !math_font_available(t);
 136                         continue;
 137                 } else if (line.size() >= 4 && line.substr(0, 4) == "else") {
 138                         skip = !skip;
 139                 } else if (line.size() >= 5 && line.substr(0, 5) == "endif") {
 140                         skip = false;
 141                         continue;
 142                 } else if (skip)
 143                         continue;
 144
 145                 // special case of pre-defined macros
 146                 if (line.size() > 8 && line.substr(0, 5) == "\\def\\") {
 147                         //lyxerr << "macro definition: '" << line << '\'' << endl;
 148                         istringstream is(line);
 149                         string macro;
 150                         string requires;
 151                         is >> macro >> requires;
 152                         MacroTable::globalMacros().insert(from_utf8(macro), requires);
 153                         continue;
 154                 }
 155
 156                 idocstringstream is(from_utf8(line));
 157                 latexkeys tmp;
 158                 is >> tmp.name >> tmp.inset;
 159                 if (isFontName(tmp.inset))
 160                         is >> charid >> fallbackid >> tmp.extra >> tmp.xmlname;
 161                 else
 162                         is >> tmp.extra;
 163                 // requires is optional
 164                 if (is)
 165                         is >> tmp.requires;
 166                 else {
 167                         LYXERR(Debug::MATHED) << "skipping line '" << line << '\'' << endl;
 168                         LYXERR(Debug::MATHED)
 169                                 << to_utf8(tmp.name) << ' ' << to_utf8(tmp.inset) << ' ' << to_utf8(tmp.extra) << endl;
 170                         continue;
 171                 }
 172
 173                 if (isFontName(tmp.inset)) {
 174                         // tmp.inset _is_ the fontname here.
 175                         // create fallbacks if necessary
 176
 177                         // store requirements as long as we can
 178                         if (tmp.requires.empty() &&
 179                             (tmp.inset == "msa" || tmp.inset == "msb"))
 180                                 tmp.requires = from_ascii("amssymb");
 181                         else if (tmp.inset == "wasy")
 182                                 tmp.requires = from_ascii("wasysym");
 183
 184                         // symbol font is not available sometimes
 185                         docstring symbol_font = from_ascii("lyxsymbol");
 186
 187                         if (tmp.extra == "func" || tmp.extra == "funclim" || tmp.extra == "special") {
 188                                 LYXERR(Debug::MATHED) << "symbol abuse for " << to_utf8(tmp.name) << endl;
 189                                 tmp.draw = tmp.name;
 190                         } else if (math_font_available(tmp.inset)) {
 191                                 LYXERR(Debug::MATHED) << "symbol available for " << to_utf8(tmp.name) << endl;
 192                                 tmp.draw.push_back(char_type(charid));
 193                         } else if (fallbackid && math_font_available(symbol_font)) {
 194                                 if (tmp.inset == "cmex")
 195                                         tmp.inset = from_ascii("lyxsymbol");
 196                                 else
 197                                         tmp.inset = from_ascii("lyxboldsymbol");
 198                                 LYXERR(Debug::MATHED) << "symbol fallback for " << to_utf8(tmp.name) << endl;
 199                                 tmp.draw.push_back(char_type(fallbackid));
 200                         } else {
 201                                 LYXERR(Debug::MATHED) << "faking " << to_utf8(tmp.name) << endl;
 202                                 tmp.draw = tmp.name;
 203                                 tmp.inset = from_ascii("lyxtex");
 204                         }
 205                 } else {
 206                         // it's a proper inset
 207                         LYXERR(Debug::MATHED) << "inset " << to_utf8(tmp.inset)
 208                                               << " used for " << to_utf8(tmp.name)
 209                                               << endl;
 210                 }
 211
 212                 if (theWordList.find(tmp.name) != theWordList.end())
 213                         LYXERR(Debug::MATHED)
 214                                 << "readSymbols: inset " << to_utf8(tmp.name)
 215                                 << " already exists." << endl;
 216                 else
 217                         theWordList[tmp.name] = tmp;
 218
 219                 LYXERR(Debug::MATHED)
 220                         << "read symbol '" << to_utf8(tmp.name)
 221                         << "  inset: " << to_utf8(tmp.inset)
 222                         << "  draw: " << int(tmp.draw.empty() ? 0 : tmp.draw[0])
 223                         << "  extra: " << to_utf8(tmp.extra)
 224                         << "  requires: " << to_utf8(tmp.requires)
 225                         << '\'' << endl;
 226         }
 227         docstring tmp = from_ascii("cmm");
 228         docstring tmp2 = from_ascii("cmsy");
 229         has_math_fonts = math_font_available(tmp) && math_font_available(tmp2);
 230 }
 231
 232
 233 } // namespace anon
 234
 235
 236 void initMath()
 237 {
 238         static bool initialized = false;
 239         if (!initialized) {
 240                 initialized = true;
 241                 initParser();
 242                 initSymbols();
 243         }
 244 }
 245
 246
 247 latexkeys const * in_word_set(docstring const & str)
 248 {
 249         WordList::iterator it = theWordList.find(str);
 250         return it != theWordList.end() ? &(it->second) : 0;
 251 }
 252
 253
 254 MathAtom createInsetMath(char const * const s)
 255 {
 256         return createInsetMath(from_utf8(s));
 257 }
 258
 259
 260 MathAtom createInsetMath(docstring const & s)
 261 {
 262         //lyxerr << "creating inset with name: '" << s << '\'' << endl;
 263         latexkeys const * l = in_word_set(s);
 264         if (l) {
 265                 docstring const & inset = l->inset;
 266                 //lyxerr << " found inset: '" << inset << '\'' << endl;
 267                 if (inset == "ref")
 268                         return MathAtom(new RefInset(l->name));
 269                 if (inset == "overset")
 270                         return MathAtom(new InsetMathOverset);
 271                 if (inset == "underset")
 272                         return MathAtom(new InsetMathUnderset);
 273                 if (inset == "decoration")
 274                         return MathAtom(new InsetMathDecoration(l));
 275                 if (inset == "space")
 276                         return MathAtom(new InsetMathSpace(l->name));
 277                 if (inset == "dots")
 278                         return MathAtom(new InsetMathDots(l));
 279                 if (inset == "mbox")
 280                         // return MathAtom(new InsetMathMBox);
 281                         // InsetMathMBox is proposed to replace InsetMathBox,
 282                         // but is not ready yet (it needs a BufferView for
 283                         // construction)
 284                         return MathAtom(new InsetMathBox(l->name));
 285 //              if (inset == "fbox")
 286 //                      return MathAtom(new InsetMathFBox(l));
 287                 if (inset == "style")
 288                         return MathAtom(new InsetMathSize(l));
 289                 if (inset == "font")
 290                         return MathAtom(new InsetMathFont(l));
 291                 if (inset == "oldfont")
 292                         return MathAtom(new InsetMathFontOld(l));
 293                 if (inset == "matrix")
 294                         return MathAtom(new InsetMathAMSArray(s));
 295                 if (inset == "split")
 296                         return MathAtom(new InsetMathSplit(s));
 297                 if (inset == "big")
 298                         // we can't create a InsetMathBig, since the argument
 299                         // is missing.
 300                         return MathAtom(new InsetMathUnknown(s));
 301                 return MathAtom(new InsetMathSymbol(l));
 302         }
 303
 304         if (s.size() == 2 && s[0] == '#' && s[1] >= '1' && s[1] <= '9')
 305                 return MathAtom(new MathMacroArgument(s[1] - '0'));
 306         if (s.size() == 3 && s[0] == '\\' && s[1] == '#'
 307                         && s[2] >= '1' && s[2] <= '9')
 308                 return MathAtom(new MathMacroArgument(s[2] - '0'));
 309         if (s == "boxed")
 310                 return MathAtom(new InsetMathBoxed());
 311         if (s == "fbox")
 312                 return MathAtom(new InsetMathFBox());
 313         if (s == "framebox")
 314                 return MathAtom(new InsetMathFrameBox);
 315         if (s == "makebox")
 316                 return MathAtom(new InsetMathMakebox);
 317         if (s == "kern")
 318                 return MathAtom(new InsetMathKern);
 319         if (s.substr(0, 8) == "xymatrix") {
 320                 char spacing_code = '\0';
 321                 LyXLength spacing;
 322                 size_t const len = s.length();
 323                 size_t i = 8;
 324                 if (i < len && s[i] == '@') {
 325                         ++i;
 326                         if (i < len) {
 327                                 switch (s[i]) {
 328                                 case 'R':
 329                                 case 'C':
 330                                 case 'M':
 331                                 case 'W':
 332                                 case 'H':
 333                                 case 'L':
 334                                         spacing_code = static_cast<char>(s[i]);
 335                                         ++i;
 336                                         break;
 337                                 }
 338                         }
 339                         if (i < len && s[i] == '=') {
 340                                 ++i;
 341                                 spacing = LyXLength(to_ascii(s.substr(i)));
 342                         }
 343                 }
 344                 return MathAtom(new InsetMathXYMatrix(spacing, spacing_code));
 345         }
 346         if (s == "xrightarrow" || s == "xleftarrow")
 347                 return MathAtom(new InsetMathXArrow(s));
 348         if (s == "split" || s == "gathered" || s == "aligned" || s == "alignedat")
 349                 return MathAtom(new InsetMathSplit(s));
 350         if (s == "cases")
 351                 return MathAtom(new InsetMathCases);
 352         if (s == "substack")
 353                 return MathAtom(new InsetMathSubstack);
 354         if (s == "subarray" || s == "array")
 355                 return MathAtom(new InsetMathArray(s, 1, 1));
 356         if (s == "sqrt")
 357                 return MathAtom(new InsetMathSqrt);
 358         if (s == "root")
 359                 return MathAtom(new InsetMathRoot);
 360         if (s == "tabular")
 361                 return MathAtom(new InsetMathTabular(s, 1, 1));
 362         if (s == "stackrel")
 363                 return MathAtom(new InsetMathStackrel);
 364         if (s == "binom" || s == "choose")
 365                 return MathAtom(new InsetMathBinom(s == "choose"));
 366         if (s == "frac")
 367                 return MathAtom(new InsetMathFrac);
 368         if (s == "over")
 369                 return MathAtom(new InsetMathFrac(InsetMathFrac::OVER));
 370         if (s == "nicefrac")
 371                 return MathAtom(new InsetMathFrac(InsetMathFrac::NICEFRAC));
 372         //if (s == "infer")
 373         //      return MathAtom(new MathInferInset);
 374         if (s == "atop")
 375                 return MathAtom(new InsetMathFrac(InsetMathFrac::ATOP));
 376         if (s == "lefteqn")
 377                 return MathAtom(new InsetMathLefteqn);
 378         if (s == "boldsymbol")
 379                 return MathAtom(new InsetMathBoldSymbol);
 380         if (s == "color" || s == "normalcolor")
 381                 return MathAtom(new InsetMathColor(true));
 382         if (s == "textcolor")
 383                 return MathAtom(new InsetMathColor(false));
 384         if (s == "dfrac")
 385                 return MathAtom(new InsetMathDFrac);
 386         if (s == "tfrac")
 387                 return MathAtom(new InsetMathTFrac);
 388         if (s == "hphantom")
 389                 return MathAtom(new InsetMathPhantom(InsetMathPhantom::hphantom));
 390         if (s == "phantom")
 391                 return MathAtom(new InsetMathPhantom(InsetMathPhantom::phantom));
 392         if (s == "vphantom")
 393                 return MathAtom(new InsetMathPhantom(InsetMathPhantom::vphantom));
 394
 395         if (MacroTable::globalMacros().has(s))
 396                 return MathAtom(new MathMacro(s,
 397                         MacroTable::globalMacros().get(s).numargs()));
 398         //if (MacroTable::localMacros().has(s))
 399         //      return MathAtom(new MathMacro(s,
 400         //              MacroTable::localMacros().get(s).numargs()));
 401
 402         //lyxerr << "creating unknown inset '" << s << "'" << endl;
 403         return MathAtom(new InsetMathUnknown(s));
 404 }
 405
 406
 407 bool createInsetMath_fromDialogStr(docstring const & str, MathArray & ar)
 408 {
 409         // An example str:
 410         // "ref LatexCommand ref\nreference \"sec:Title\"\n\\end_inset\n\n";
 411         docstring name;
 412         docstring body = split(str, name, ' ');
 413
 414         if (name != "ref" )
 415                 return false;
 416
 417         InsetCommandParams icp("ref");
 418         // FIXME UNICODE
 419         InsetCommandMailer::string2params("ref", to_utf8(str), icp);
 420         mathed_parse_cell(ar, icp.getCommand());
 421         if (ar.size() != 1)
 422                 return false;
 423
 424         return ar[0].nucleus();
 425 }
 426
 427
 428 } // namespace lyx