src/mathed/MathFactory.C

   1 /**
   2  * \file MathFactory.C
   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 "MathMacroTemplate.h"
  55 #include "MathParser.h"
  56 #include "MathSupport.h"
  57
  58 #include "debug.h"
  59
  60 #include "support/filetools.h" // LibFileSearch
  61 #include "support/lstrings.h"
  62
  63 #include "frontends/FontLoader.h"
  64
  65 #include <fstream>
  66 #include <sstream>
  67
  68
  69 namespace lyx {
  70
  71 using support::libFileSearch;
  72 using support::split;
  73
  74 using std::string;
  75 using std::endl;
  76 using std::istringstream;
  77 using std::vector;
  78
  79 bool has_math_fonts;
  80
  81
  82 namespace {
  83
  84 // file scope
  85 typedef std::map<docstring, latexkeys> WordList;
  86
  87 WordList theWordList;
  88
  89
  90 bool math_font_available(docstring & name)
  91 {
  92         LyXFont f;
  93         augmentFont(f, name);
  94
  95         // Do we have the font proper?
  96         if (theFontLoader().available(f))
  97                 return true;
  98
  99         // can we fake it?
 100         if (name == "eufrak") {
 101                 name = from_ascii("lyxfakefrak");
 102                 return true;
 103         }
 104
 105         lyxerr[Debug::MATHED]
 106                 << "font " << to_utf8(name) << " not available and I can't fake it"
 107                 << endl;
 108         return false;
 109 }
 110
 111
 112 void initSymbols()
 113 {
 114         string const filename = libFileSearch(string(), "symbols");
 115         lyxerr[Debug::MATHED] << "read symbols from " << filename << endl;
 116         if (filename.empty()) {
 117                 lyxerr << "Could not find symbols file" << endl;
 118                 return;
 119         }
 120
 121         std::ifstream fs(filename.c_str());
 122         string line;
 123         bool skip = false;
 124         while (getline(fs, line)) {
 125                 int charid     = 0;
 126                 int fallbackid = 0;
 127                 if (line.empty() || line[0] == '#')
 128                         continue;
 129
 130                 // special case of iffont/else/endif
 131                 if (line.size() >= 7 && line.substr(0, 6) == "iffont") {
 132                         istringstream is(line);
 133                         string tmp;
 134                         is >> tmp;
 135                         is >> tmp;
 136                         docstring t = from_utf8(tmp);
 137                         skip = !math_font_available(t);
 138                         continue;
 139                 } else if (line.size() >= 4 && line.substr(0, 4) == "else") {
 140                         skip = !skip;
 141                 } else if (line.size() >= 5 && line.substr(0, 5) == "endif") {
 142                         skip = false;
 143                         continue;
 144                 } else if (skip)
 145                         continue;
 146
 147                 // special case of pre-defined macros
 148                 if (line.size() > 8 && line.substr(0, 5) == "\\def\\") {
 149                         //lyxerr << "macro definition: '" << line << '\'' << endl;
 150                         istringstream is(line);
 151                         string macro;
 152                         string requires;
 153                         is >> macro >> requires;
 154                         MacroTable::globalMacros().insert(from_utf8(macro), requires);
 155                         continue;
 156                 }
 157
 158                 idocstringstream is(from_utf8(line));
 159                 latexkeys tmp;
 160                 is >> tmp.name >> tmp.inset;
 161                 if (isFontName(tmp.inset))
 162                         is >> charid >> fallbackid >> tmp.extra >> tmp.xmlname;
 163                 else
 164                         is >> tmp.extra;
 165                 // requires is optional
 166                 if (is)
 167                         is >> tmp.requires;
 168                 else {
 169                         lyxerr[Debug::MATHED] << "skipping line '" << line << '\'' << endl;
 170                         lyxerr[Debug::MATHED]
 171                                 << to_utf8(tmp.name) << ' ' << to_utf8(tmp.inset) << ' ' << to_utf8(tmp.extra) << endl;
 172                         continue;
 173                 }
 174
 175                 if (isFontName(tmp.inset)) {
 176                         // tmp.inset _is_ the fontname here.
 177                         // create fallbacks if necessary
 178
 179                         // store requirements as long as we can
 180                         if (tmp.requires.empty() &&
 181                             (tmp.inset == "msa" || tmp.inset == "msb"))
 182                                 tmp.requires = from_ascii("amssymb");
 183                         else if (tmp.inset == "wasy")
 184                                 tmp.requires = from_ascii("wasysym");
 185
 186                         // symbol font is not available sometimes
 187                         docstring symbol_font = from_ascii("lyxsymbol");
 188
 189                         if (tmp.extra == "func" || tmp.extra == "funclim" || tmp.extra == "special") {
 190                                 lyxerr[Debug::MATHED] << "symbol abuse for " << to_utf8(tmp.name) << endl;
 191                                 tmp.draw = tmp.name;
 192                         } else if (math_font_available(tmp.inset)) {
 193                                 lyxerr[Debug::MATHED] << "symbol available for " << to_utf8(tmp.name) << endl;
 194                                 tmp.draw.push_back(char_type(charid));
 195                         } else if (fallbackid && math_font_available(symbol_font)) {
 196                                 if (tmp.inset == "cmex")
 197                                         tmp.inset = from_ascii("lyxsymbol");
 198                                 else
 199                                         tmp.inset = from_ascii("lyxboldsymbol");
 200                                 lyxerr[Debug::MATHED] << "symbol fallback for " << to_utf8(tmp.name) << endl;
 201                                 tmp.draw.push_back(char_type(fallbackid));
 202                         } else {
 203                                 lyxerr[Debug::MATHED] << "faking " << to_utf8(tmp.name) << endl;
 204                                 tmp.draw = tmp.name;
 205                                 tmp.inset = from_ascii("lyxtex");
 206                         }
 207                 } else {
 208                         // it's a proper inset
 209                         lyxerr[Debug::MATHED] << "inset " << to_utf8(tmp.inset)
 210                                               << " used for " << to_utf8(tmp.name)
 211                                               << endl;
 212                 }
 213
 214                 if (theWordList.find(tmp.name) != theWordList.end())
 215                         lyxerr[Debug::MATHED]
 216                                 << "readSymbols: inset " << to_utf8(tmp.name)
 217                                 << " already exists." << endl;
 218                 else
 219                         theWordList[tmp.name] = tmp;
 220
 221                 lyxerr[Debug::MATHED]
 222                         << "read symbol '" << to_utf8(tmp.name)
 223                         << "  inset: " << to_utf8(tmp.inset)
 224                         << "  draw: " << int(tmp.draw.empty() ? 0 : tmp.draw[0])
 225                         << "  extra: " << to_utf8(tmp.extra)
 226                         << "  requires: " << to_utf8(tmp.requires)
 227                         << '\'' << endl;
 228         }
 229         docstring tmp = from_ascii("cmm");
 230         docstring tmp2 = from_ascii("cmsy");
 231         has_math_fonts = math_font_available(tmp) && math_font_available(tmp2);
 232 }
 233
 234
 235 } // namespace anon
 236
 237
 238 void initMath()
 239 {
 240         static bool initialized = false;
 241         if (!initialized) {
 242                 initialized = true;
 243                 initParser();
 244                 initSymbols();
 245         }
 246 }
 247
 248
 249 latexkeys const * in_word_set(docstring const & str)
 250 {
 251         WordList::iterator it = theWordList.find(str);
 252         return it != theWordList.end() ? &(it->second) : 0;
 253 }
 254
 255
 256 MathAtom createInsetMath(char const * const s)
 257 {
 258         return createInsetMath(from_utf8(s));
 259 }
 260
 261
 262 MathAtom createInsetMath(docstring const & s)
 263 {
 264         //lyxerr << "creating inset with name: '" << s << '\'' << endl;
 265         latexkeys const * l = in_word_set(s);
 266         if (l) {
 267                 docstring const & inset = l->inset;
 268                 //lyxerr << " found inset: '" << inset << '\'' << endl;
 269                 if (inset == "ref")
 270                         return MathAtom(new RefInset(l->name));
 271                 if (inset == "overset")
 272                         return MathAtom(new InsetMathOverset);
 273                 if (inset == "underset")
 274                         return MathAtom(new InsetMathUnderset);
 275                 if (inset == "decoration")
 276                         return MathAtom(new InsetMathDecoration(l));
 277                 if (inset == "space")
 278                         return MathAtom(new InsetMathSpace(l->name));
 279                 if (inset == "dots")
 280                         return MathAtom(new InsetMathDots(l));
 281                 if (inset == "mbox")
 282                         // return MathAtom(new InsetMathMBox);
 283                         // InsetMathMBox is proposed to replace InsetMathBox,
 284                         // but is not ready yet (it needs a BufferView for
 285                         // construction)
 286                         return MathAtom(new InsetMathBox(l->name));
 287 //              if (inset == "fbox")
 288 //                      return MathAtom(new InsetMathFBox(l));
 289                 if (inset == "style")
 290                         return MathAtom(new InsetMathSize(l));
 291                 if (inset == "font")
 292                         return MathAtom(new InsetMathFont(l));
 293                 if (inset == "oldfont")
 294                         return MathAtom(new InsetMathFontOld(l));
 295                 if (inset == "matrix")
 296                         return MathAtom(new InsetMathAMSArray(s));
 297                 if (inset == "split")
 298                         return MathAtom(new InsetMathSplit(s));
 299                 if (inset == "big")
 300                         // we can't create a InsetMathBig, since the argument
 301                         // is missing.
 302                         return MathAtom(new InsetMathUnknown(s));
 303                 return MathAtom(new InsetMathSymbol(l));
 304         }
 305
 306         if (s.size() == 2 && s[0] == '#' && s[1] >= '1' && s[1] <= '9')
 307                 return MathAtom(new MathMacroArgument(s[1] - '0'));
 308         if (s.size() == 3 && s[0] == '\\' && s[1] == '#'
 309                         && s[2] >= '1' && s[2] <= '9')
 310                 return MathAtom(new MathMacroArgument(s[2] - '0'));
 311         if (s == "boxed")
 312                 return MathAtom(new InsetMathBoxed());
 313         if (s == "fbox")
 314                 return MathAtom(new InsetMathFBox());
 315         if (s == "framebox")
 316                 return MathAtom(new InsetMathFrameBox);
 317         if (s == "makebox")
 318                 return MathAtom(new InsetMathMakebox);
 319         if (s == "kern")
 320                 return MathAtom(new InsetMathKern);
 321         if (s.substr(0, 8) == "xymatrix") {
 322                 char spacing_code = '\0';
 323                 LyXLength spacing;
 324                 size_t const len = s.length();
 325                 size_t i = 8;
 326                 if (i < len && s[i] == '@') {
 327                         ++i;
 328                         if (i < len) {
 329                                 switch (s[i]) {
 330                                 case 'R':
 331                                 case 'C':
 332                                 case 'M':
 333                                 case 'W':
 334                                 case 'H':
 335                                 case 'L':
 336                                         spacing_code = static_cast<char>(s[i]);
 337                                         ++i;
 338                                         break;
 339                                 }
 340                         }
 341                         if (i < len && s[i] == '=') {
 342                                 ++i;
 343                                 spacing = LyXLength(to_ascii(s.substr(i)));
 344                         }
 345                 }
 346                 return MathAtom(new InsetMathXYMatrix(spacing, spacing_code));
 347         }
 348         if (s == "xrightarrow" || s == "xleftarrow")
 349                 return MathAtom(new InsetMathXArrow(s));
 350         if (s == "split" || s == "gathered" || s == "aligned" || s == "alignedat")
 351                 return MathAtom(new InsetMathSplit(s));
 352         if (s == "cases")
 353                 return MathAtom(new InsetMathCases);
 354         if (s == "substack")
 355                 return MathAtom(new InsetMathSubstack);
 356         if (s == "subarray" || s == "array")
 357                 return MathAtom(new InsetMathArray(s, 1, 1));
 358         if (s == "sqrt")
 359                 return MathAtom(new InsetMathSqrt);
 360         if (s == "root")
 361                 return MathAtom(new InsetMathRoot);
 362         if (s == "tabular")
 363                 return MathAtom(new InsetMathTabular(s, 1, 1));
 364         if (s == "stackrel")
 365                 return MathAtom(new InsetMathStackrel);
 366         if (s == "binom" || s == "choose")
 367                 return MathAtom(new InsetMathBinom(s == "choose"));
 368         if (s == "frac")
 369                 return MathAtom(new InsetMathFrac);
 370         if (s == "over")
 371                 return MathAtom(new InsetMathFrac(InsetMathFrac::OVER));
 372         if (s == "nicefrac")
 373                 return MathAtom(new InsetMathFrac(InsetMathFrac::NICEFRAC));
 374         //if (s == "infer")
 375         //      return MathAtom(new MathInferInset);
 376         if (s == "atop")
 377                 return MathAtom(new InsetMathFrac(InsetMathFrac::ATOP));
 378         if (s == "lefteqn")
 379                 return MathAtom(new InsetMathLefteqn);
 380         if (s == "boldsymbol")
 381                 return MathAtom(new InsetMathBoldSymbol);
 382         if (s == "color" || s == "normalcolor")
 383                 return MathAtom(new InsetMathColor(true));
 384         if (s == "textcolor")
 385                 return MathAtom(new InsetMathColor(false));
 386         if (s == "dfrac")
 387                 return MathAtom(new InsetMathDFrac);
 388         if (s == "tfrac")
 389                 return MathAtom(new InsetMathTFrac);
 390         if (s == "hphantom")
 391                 return MathAtom(new InsetMathPhantom(InsetMathPhantom::hphantom));
 392         if (s == "phantom")
 393                 return MathAtom(new InsetMathPhantom(InsetMathPhantom::phantom));
 394         if (s == "vphantom")
 395                 return MathAtom(new InsetMathPhantom(InsetMathPhantom::vphantom));
 396
 397         if (MacroTable::globalMacros().has(s))
 398                 return MathAtom(new MathMacro(s,
 399                         MacroTable::globalMacros().get(s).numargs()));
 400         //if (MacroTable::localMacros().has(s))
 401         //      return MathAtom(new MathMacro(s,
 402         //              MacroTable::localMacros().get(s).numargs()));
 403
 404         //lyxerr << "creating unknown inset '" << s << "'" << endl;
 405         return MathAtom(new InsetMathUnknown(s));
 406 }
 407
 408
 409 bool createInsetMath_fromDialogStr(docstring const & str, MathArray & ar)
 410 {
 411         // An example str:
 412         // "ref LatexCommand \\ref{sec:Title}\n\\end_inset\n\n";
 413         docstring name;
 414         docstring body = split(str, name, ' ');
 415
 416         if (name != "ref" )
 417                 return false;
 418
 419         // body comes with a head "LatexCommand " and a
 420         // tail "\nend_inset\n\n". Strip them off.
 421         docstring trimmed;
 422         body = split(body, trimmed, ' ');
 423         split(body, trimmed, '\n');
 424
 425         mathed_parse_cell(ar, trimmed);
 426         if (ar.size() != 1)
 427                 return false;
 428
 429         return ar[0].nucleus();
 430 }
 431
 432
 433 } // namespace lyx