src/mathed/math_factory.C

   1 /**
   2  * \file math_factory.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 "math_factory.h"
  14 #include "math_parser.h"
  15 #include "math_arrayinset.h"
  16 #include "math_amsarrayinset.h"
  17 #include "math_binominset.h"
  18 #include "math_boxinset.h"
  19 #include "math_boxedinset.h"
  20 #include "math_boldsymbolinset.h"
  21 #include "math_casesinset.h"
  22 #include "math_colorinset.h"
  23 #include "math_decorationinset.h"
  24 #include "math_dfracinset.h"
  25 #include "math_dotsinset.h"
  26 #include "math_ertinset.h"
  27 #include "math_fboxinset.h"
  28 #include "math_frameboxinset.h"
  29 #include "math_fontinset.h"
  30 #include "math_fontoldinset.h"
  31 #include "math_fracinset.h"
  32 #include "math_kerninset.h"
  33 #include "math_lefteqninset.h"
  34 #include "math_macro.h"
  35 #include "math_macroarg.h"
  36 #include "math_macrotable.h"
  37 #include "math_macrotemplate.h"
  38 #include "math_makeboxinset.h"
  39 #include "math_oversetinset.h"
  40 #include "math_parboxinset.h"
  41 #include "math_parser.h"
  42 #include "math_rootinset.h"
  43 #include "math_sizeinset.h"
  44 #include "math_spaceinset.h"
  45 #include "math_splitinset.h"
  46 #include "math_sqrtinset.h"
  47 #include "math_stackrelinset.h"
  48 #include "math_substackinset.h"
  49 #include "math_symbolinset.h"
  50 #include "math_tabularinset.h"
  51 #include "math_undersetinset.h"
  52 #include "math_unknowninset.h"
  53 #include "math_xarrowinset.h"
  54
  55 //#include "insets/insetref.h"
  56 #include "ref_inset.h"
  57
  58 #include "debug.h"
  59 #include "math_support.h"
  60
  61 #include "support/filetools.h" // LibFileSearch
  62 #include "support/lstrings.h"
  63
  64 #include "frontends/lyx_gui.h"
  65
  66 #include <fstream>
  67 #include <sstream>
  68
  69 using lyx::support::LibFileSearch;
  70 using lyx::support::split;
  71
  72 using std::string;
  73 using std::endl;
  74 using std::istringstream;
  75
  76 bool has_math_fonts;
  77
  78
  79 namespace {
  80
  81 // file scope
  82 typedef std::map<string, latexkeys> WordList;
  83 WordList theWordList;
  84
  85
  86 bool math_font_available(string & name)
  87 {
  88         LyXFont f;
  89         augmentFont(f, name);
  90
  91         // Do we have the font proper?
  92         if (lyx_gui::font_available(f))
  93                 return true;
  94
  95         // can we fake it?
  96         if (name == "eufrak") {
  97                 name = "lyxfakefrak";
  98                 return true;
  99         }
 100
 101         lyxerr[Debug::MATHED]
 102                 << "font " << name << " not available and I can't fake it"
 103                 << endl;
 104         return false;
 105 }
 106
 107
 108 void initSymbols()
 109 {
 110         string const filename = LibFileSearch(string(), "symbols");
 111         lyxerr[Debug::MATHED] << "read symbols from " << filename << endl;
 112         if (filename.empty()) {
 113                 lyxerr << "Could not find symbols file" << endl;
 114                 return;
 115         }
 116
 117         std::ifstream fs(filename.c_str());
 118         string line;
 119         bool skip = false;
 120         while (getline(fs, line)) {
 121                 int charid     = 0;
 122                 int fallbackid = 0;
 123                 if (!line.empty() && line[0] == '#')
 124                         continue;
 125
 126                 // special case of iffont/else/endif
 127                 if (line.size() >= 7 && line.substr(0, 6) == "iffont") {
 128                         istringstream is(line);
 129                         string tmp;
 130                         is >> tmp;
 131                         is >> tmp;
 132                         skip = !math_font_available(tmp);
 133                         continue;
 134                 } else if (line.size() >= 4 && line.substr(0, 4) == "else") {
 135                         skip = !skip;
 136                 } else if (line.size() >= 5 && line.substr(0, 5) == "endif") {
 137                         skip = false;
 138                         continue;
 139                 } else if (skip)
 140                         continue;
 141
 142                 // special case of pre-defined macros
 143                 if (line.size() > 8 && line.substr(0, 5) == "\\def\\") {
 144                         //lyxerr << "macro definition: '" << line << '\'' << endl;
 145                         MacroTable::globalMacros().insert(line);
 146                         continue;
 147                 }
 148
 149                 istringstream is(line);
 150                 latexkeys tmp;
 151                 is >> tmp.name >> tmp.inset;
 152                 if (isFontName(tmp.inset))
 153                         is >> charid >> fallbackid >> tmp.extra >> tmp.xmlname;
 154                 else
 155                         is >> tmp.extra;
 156                 if (!is) {
 157                         lyxerr[Debug::MATHED] << "skipping line '" << line << '\'' << endl;
 158                         lyxerr[Debug::MATHED]
 159                                 << tmp.name << ' ' << tmp.inset << ' ' << tmp.extra << endl;
 160                         continue;
 161                 }
 162
 163                 if (isFontName(tmp.inset)) {
 164                         // tmp.inset _is_ the fontname here.
 165                         // create fallbacks if necessary
 166
 167                         // symbol font is not available sometimes
 168                         string symbol_font = "lyxsymbol";
 169
 170                         if (tmp.extra == "func" || tmp.extra == "funclim" || tmp.extra == "special") {
 171                                 lyxerr[Debug::MATHED] << "symbol abuse for " << tmp.name << endl;
 172                                 tmp.draw = tmp.name;
 173                         } else if (math_font_available(tmp.inset)) {
 174                                 lyxerr[Debug::MATHED] << "symbol available for " << tmp.name << endl;
 175                                 tmp.draw += char(charid);
 176                         } else if (fallbackid && math_font_available(symbol_font)) {
 177                                 if (tmp.inset == "cmex")
 178                                         tmp.inset  = "lyxsymbol";
 179                                 else
 180                                         tmp.inset  = "lyxboldsymbol";
 181                                 lyxerr[Debug::MATHED] << "symbol fallback for " << tmp.name << endl;
 182                                 tmp.draw += char(fallbackid);
 183                         } else {
 184                                 lyxerr[Debug::MATHED] << "faking " << tmp.name << endl;
 185                                 tmp.draw = tmp.name;
 186                                 tmp.inset = "lyxtex";
 187                         }
 188                 } else {
 189                         // it's a proper inset
 190                         lyxerr[Debug::MATHED] << "inset " << tmp.inset
 191                                               << " used for " << tmp.name
 192                                               << endl;
 193                 }
 194
 195                 if (theWordList.find(tmp.name) != theWordList.end())
 196                         lyxerr[Debug::MATHED]
 197                                 << "readSymbols: inset " << tmp.name
 198                                 << " already exists." << endl;
 199                 else
 200                         theWordList[tmp.name] = tmp;
 201
 202                 lyxerr[Debug::MATHED]
 203                         << "read symbol '" << tmp.name
 204                         << "  inset: " << tmp.inset
 205                         << "  draw: " << int(tmp.draw.empty() ? 0 : tmp.draw[0])
 206                         << "  extra: " << tmp.extra
 207                         << '\'' << endl;
 208         }
 209         string tmp = "cmm";
 210         string tmp2 = "cmsy";
 211         has_math_fonts = math_font_available(tmp) && math_font_available(tmp2);
 212 }
 213
 214
 215 } // namespace anon
 216
 217
 218 void initMath()
 219 {
 220         static bool initialized = false;
 221         if (!initialized) {
 222                 initParser();
 223                 initSymbols();
 224                 initialized = true;
 225         }
 226 }
 227
 228
 229 latexkeys const * in_word_set(string const & str)
 230 {
 231         WordList::iterator it = theWordList.find(str);
 232         //lyxerr << "looking up '" << str << "' found: "
 233         // << (it != theWordList.end()) << endl;
 234         return (it != theWordList.end()) ? &(it->second) : 0;
 235 }
 236
 237
 238 MathAtom createMathInset(string const & s)
 239 {
 240         //lyxerr << "creating inset with name: '" << s << '\'' << endl;
 241         latexkeys const * l = in_word_set(s);
 242         if (l) {
 243                 string const & inset = l->inset;
 244                 //lyxerr << " found inset: '" << inset << '\'' << endl;
 245                 if (inset == "ref")
 246                         return MathAtom(new RefInset(l->name));
 247                 if (inset == "overset")
 248                         return MathAtom(new MathOversetInset);
 249                 if (inset == "underset")
 250                         return MathAtom(new MathUndersetInset);
 251                 if (inset == "decoration")
 252                         return MathAtom(new MathDecorationInset(l));
 253                 if (inset == "space")
 254                         return MathAtom(new MathSpaceInset(l->name));
 255                 if (inset == "dots")
 256                         return MathAtom(new MathDotsInset(l));
 257 //              if (inset == "mbox")
 258 //                      return MathAtom(new MathBoxInset(l->name));
 259         //      if (inset == "parbox")
 260         //              return MathAtom(new MathParboxInset);
 261 //              if (inset == "fbox")
 262 //                      return MathAtom(new MathFboxInset(l));
 263                 if (inset == "style")
 264                         return MathAtom(new MathSizeInset(l));
 265                 if (inset == "font")
 266                         return MathAtom(new MathFontInset(l));
 267                 if (inset == "oldfont")
 268                         return MathAtom(new MathFontOldInset(l));
 269                 if (inset == "matrix")
 270                         return MathAtom(new MathAMSArrayInset(s));
 271                 return MathAtom(new MathSymbolInset(l));
 272         }
 273
 274         if (s.size() == 2 && s[0] == '#' && s[1] >= '1' && s[1] <= '9')
 275                 return MathAtom(new MathMacroArgument(s[1] - '0'));
 276         if (s.size() == 3 && s[0] == '\\' && s[1] == '#'
 277                         && s[2] >= '1' && s[2] <= '9')
 278                 return MathAtom(new MathMacroArgument(s[2] - '0'));
 279         if (s == "boxed")
 280                 return MathAtom(new MathBoxedInset());
 281         if (s == "mbox")
 282                 return MathAtom(new MathBoxInset("mbox"));
 283         if (s == "fbox")
 284                 return MathAtom(new MathFboxInset());
 285         if (s == "framebox")
 286                 return MathAtom(new MathFrameboxInset);
 287         if (s == "makebox")
 288                 return MathAtom(new MathMakeboxInset);
 289         if (s == "kern")
 290                 return MathAtom(new MathKernInset);
 291         if (s == "xrightarrow" || s == "xleftarrow")
 292                 return MathAtom(new MathXArrowInset(s));
 293         if (s == "split" || s == "gathered" || s == "aligned")
 294                 return MathAtom(new MathSplitInset(s));
 295         if (s == "cases")
 296                 return MathAtom(new MathCasesInset);
 297         if (s == "substack")
 298                 return MathAtom(new MathSubstackInset);
 299         if (s == "subarray" || s == "array")
 300                 return MathAtom(new MathArrayInset(s, 1, 1));
 301         if (s == "sqrt")
 302                 return MathAtom(new MathSqrtInset);
 303         if (s == "root")
 304                 return MathAtom(new MathRootInset);
 305         if (s == "tabular")
 306                 return MathAtom(new MathTabularInset(s, 1, 1));
 307         if (s == "stackrel")
 308                 return MathAtom(new MathStackrelInset);
 309         if (s == "binom" || s == "choose")
 310                 return MathAtom(new MathBinomInset(s == "choose"));
 311         if (s == "over" || s == "frac")
 312                 return MathAtom(new MathFracInset);
 313         //if (s == "infer")
 314         //      return MathAtom(new MathInferInset);
 315         if (s == "atop")
 316                 return MathAtom(new MathFracInset(true));
 317         if (s == "lefteqn")
 318                 return MathAtom(new MathLefteqnInset);
 319         if (s == "lyxert")
 320                 return MathAtom(new MathErtInset);
 321         if (s == "boldsymbol")
 322                 return MathAtom(new MathBoldsymbolInset);
 323         if (s == "color")
 324                 return MathAtom(new MathColorInset(true));
 325         if (s == "textcolor")
 326                 return MathAtom(new MathColorInset(false));
 327         if (s == "dfrac")
 328                 return MathAtom(new MathDfracInset);
 329
 330         if (MacroTable::globalMacros().has(s))
 331                 return MathAtom(new MathMacro(s,
 332                         MacroTable::globalMacros().get(s).numargs()));
 333         //if (MacroTable::localMacros().has(s))
 334         //      return MathAtom(new MathMacro(s,
 335         //              MacroTable::localMacros().get(s).numargs()));
 336
 337         //lyxerr << "creating unknown inset '" << s << "'" << endl;
 338         return MathAtom(new MathUnknownInset(s));
 339 }
 340
 341
 342 bool createMathInset_fromDialogStr(string const & str, MathArray & ar)
 343 {
 344         // An example str:
 345         // "ref LatexCommand \\ref{sec:Title}\n\\end_inset\n\n";
 346         string name;
 347         string body = split(str, name, ' ');
 348
 349         if (name != "ref" )
 350                 return false;
 351
 352         // body comes with a head "LatexCommand " and a
 353         // tail "\nend_inset\n\n". Strip them off.
 354         string trimmed;
 355         body = split(body, trimmed, ' ');
 356         split(body, trimmed, '\n');
 357
 358         mathed_parse_cell(ar, trimmed);
 359         if (ar.size() != 1)
 360                 return false;
 361
 362         return ar[0].nucleus();
 363 }