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 "InsetMathBoldSymbol.h"
  18 #include "InsetMathBox.h"
  19 #include "InsetMathCancel.h"
  20 #include "InsetMathCancelto.h"
  21 #include "InsetMathCases.h"
  22 #include "InsetMathColor.h"
  23 #include "InsetMathDecoration.h"
  24 #include "InsetMathDots.h"
  25 #include "InsetMathEnsureMath.h"
  26 #include "InsetMathFont.h"
  27 #include "InsetMathFontOld.h"
  28 #include "InsetMathFrac.h"
  29 #include "InsetMathKern.h"
  30 #include "InsetMathLefteqn.h"
  31 #include "InsetMathOverset.h"
  32 #include "InsetMathPhantom.h"
  33 #include "InsetMathRef.h"
  34 #include "InsetMathRoot.h"
  35 #include "InsetMathSideset.h"
  36 #include "InsetMathSize.h"
  37 #include "InsetMathSpace.h"
  38 #include "InsetMathSpecialChar.h"
  39 #include "InsetMathSplit.h"
  40 #include "InsetMathSqrt.h"
  41 #include "InsetMathStackrel.h"
  42 #include "InsetMathSubstack.h"
  43 #include "InsetMathSymbol.h"
  44 #include "InsetMathTabular.h"
  45 #include "InsetMathUnderset.h"
  46 #include "InsetMathUnknown.h"
  47 #include "InsetMathHull.h"
  48 #include "InsetMathXArrow.h"
  49 #include "InsetMathXYMatrix.h"
  50 #include "InsetMathDiagram.h"
  51 #include "MacroTable.h"
  52 #include "MathMacro.h"
  53 #include "MathMacroArgument.h"
  54 #include "MathParser.h"
  55 #include "MathStream.h"
  56 #include "MathSupport.h"
  57
  58 #include "insets/InsetCommand.h"
  59 #include "insets/InsetSpace.h"
  60
  61 #include "support/debug.h"
  62 #include "support/docstream.h"
  63 #include "support/FileName.h"
  64 #include "support/filetools.h" // LibFileSearch
  65 #include "support/lstrings.h"
  66 #include "support/textutils.h"
  67
  68 #include "frontends/FontLoader.h"
  69
  70 #include "Buffer.h"
  71 #include "BufferParams.h"
  72 #include "Encoding.h"
  73 #include "LyX.h" // use_gui
  74 #include "OutputParams.h"
  75
  76 using namespace std;
  77 using namespace lyx::support;
  78
  79 namespace lyx {
  80
  81 bool has_math_fonts;
  82
  83
  84 namespace {
  85
  86 MathWordList theMathWordList;
  87
  88
  89 bool isMathFontAvailable(docstring & name)
  90 {
  91         if (!use_gui)
  92                 return false;
  93
  94         FontInfo f;
  95         augmentFont(f, name);
  96
  97         // Do we have the font proper?
  98         if (theFontLoader().available(f))
  99                 return true;
 100
 101         // can we fake it?
 102         if (name == "eufrak") {
 103                 name = from_ascii("lyxfakefrak");
 104                 return true;
 105         }
 106
 107         LYXERR(Debug::MATHED,
 108                 "font " << to_utf8(name) << " not available and I can't fake it");
 109         return false;
 110 }
 111
 112
 113 bool canBeDisplayed(char_type c)
 114 {
 115         if (!use_gui)
 116                 return true;
 117         return theFontLoader().canBeDisplayed(c);
 118 }
 119
 120
 121 bool isUnicodeSymbolAvailable(docstring const & name, char_type & c)
 122 {
 123         // this is too fragile, e.g. prodes W instead of capital omega on OS X
 124 #if 0
 125         docstring cmd(from_ascii("\\") + name);
 126         bool is_combining;
 127         bool termination;
 128         c = Encodings::fromLaTeXCommand(cmd, Encodings::MATH_CMD,
 129                                         is_combining, termination);
 130         if (c == 0 && name == "varOmega") {
 131                 // fallback for bug 7954, unicodesymbols does not list
 132                 // \\varOmega because of requirements, but this might change
 133                 cmd = from_ascii("\\mathit{\\Omega}");
 134                 c = Encodings::fromLaTeXCommand(cmd, Encodings::MATH_CMD,
 135                                                 is_combining, termination);
 136         }
 137         return c != 0 && !is_combining;
 138 #endif
 139 }
 140
 141
 142 void initSymbols()
 143 {
 144         FileName const filename = libFileSearch(string(), "symbols");
 145         LYXERR(Debug::MATHED, "read symbols from " << filename);
 146         if (filename.empty()) {
 147                 lyxerr << "Could not find symbols file" << endl;
 148                 return;
 149         }
 150
 151         ifstream fs(filename.toFilesystemEncoding().c_str());
 152         string line;
 153         bool skip = false;
 154         while (getline(fs, line)) {
 155                 int charid     = 0;
 156                 int fallbackid = 0;
 157                 if (line.empty() || line[0] == '#')
 158                         continue;
 159
 160                 // special case of iffont/else/endif
 161                 if (line.size() >= 7 && line.substr(0, 6) == "iffont") {
 162                         istringstream is(line);
 163                         string tmp;
 164                         is >> tmp;
 165                         is >> tmp;
 166                         docstring t = from_utf8(tmp);
 167                         skip = !isMathFontAvailable(t);
 168                         continue;
 169                 } else if (line.size() >= 4 && line.substr(0, 4) == "else") {
 170                         skip = !skip;
 171                         continue;
 172                 } else if (line.size() >= 5 && line.substr(0, 5) == "endif") {
 173                         skip = false;
 174                         continue;
 175                 } else if (skip)
 176                         continue;
 177
 178                 // special case of pre-defined macros
 179                 if (line.size() > 8 && line.substr(0, 5) == "\\def\\") {
 180                         //lyxerr << "macro definition: '" << line << '\'' << endl;
 181                         istringstream is(line);
 182                         string macro;
 183                         string requires;
 184                         is >> macro >> requires;
 185                         MacroTable::iterator it = MacroTable::globalMacros().insert(
 186                                         0, from_utf8(macro), requires);
 187                         // If you change the following output, please adjust
 188                         // development/tools/generate_symbols_images.py.
 189                         LYXERR(Debug::MATHED, "read symbol '" << to_utf8(it->first)
 190                                 << "  inset: macro"
 191                                 << "  draw: 0"
 192                                 << "  extra: "
 193                                 << "  requires: " << requires << '\'');
 194                         continue;
 195                 }
 196
 197                 idocstringstream is(from_utf8(line));
 198                 latexkeys tmp;
 199                 is >> tmp.name >> tmp.inset;
 200                 if (isFontName(tmp.inset))
 201                         is >> charid >> fallbackid >> tmp.extra >> tmp.xmlname;
 202                 else
 203                         is >> tmp.extra;
 204                 // requires is optional
 205                 if (is) {
 206                         is >> tmp.requires;
 207                         // backward compatibility
 208                         if (tmp.requires == "esintoramsmath")
 209                                 tmp.requires = from_ascii("esint|amsmath");
 210                 } else {
 211                         LYXERR(Debug::MATHED, "skipping line '" << line << "'\n"
 212                                 << to_utf8(tmp.name) << ' ' << to_utf8(tmp.inset) << ' '
 213                                 << to_utf8(tmp.extra));
 214                         continue;
 215                 }
 216
 217                 if (isFontName(tmp.inset)) {
 218                         // tmp.inset _is_ the fontname here.
 219                         // create fallbacks if necessary
 220
 221                         // store requirements as long as we can
 222                         if (tmp.requires.empty()) {
 223                                 if (tmp.inset == "msa" || tmp.inset == "msb")
 224                                         tmp.requires = from_ascii("amssymb");
 225                                 else if (tmp.inset == "wasy")
 226                                         tmp.requires = from_ascii("wasysym");
 227                                 else if (tmp.inset == "mathscr")
 228                                         tmp.requires = from_ascii("mathrsfs");
 229                         }
 230
 231                         // symbol font is not available sometimes
 232                         docstring symbol_font = from_ascii("lyxsymbol");
 233                         char_type unicodesymbol = 0;
 234
 235                         if (tmp.extra == "func" || tmp.extra == "funclim" || tmp.extra == "special") {
 236                                 LYXERR(Debug::MATHED, "symbol abuse for " << to_utf8(tmp.name));
 237                                 tmp.draw = tmp.name;
 238                         } else if (isMathFontAvailable(tmp.inset) && canBeDisplayed(charid)) {
 239                                 LYXERR(Debug::MATHED, "symbol available for " << to_utf8(tmp.name));
 240                                 tmp.draw.push_back(char_type(charid));
 241                         } else if (fallbackid && isMathFontAvailable(symbol_font) &&
 242                                    canBeDisplayed(fallbackid)) {
 243                                 if (tmp.inset == "cmex")
 244                                         tmp.inset = from_ascii("lyxsymbol");
 245                                 else
 246                                         tmp.inset = from_ascii("lyxboldsymbol");
 247                                 LYXERR(Debug::MATHED, "symbol fallback for " << to_utf8(tmp.name));
 248                                 tmp.draw.push_back(char_type(fallbackid));
 249                         } else if (isUnicodeSymbolAvailable(tmp.name, unicodesymbol)) {
 250                                 LYXERR(Debug::MATHED, "unicode fallback for " << to_utf8(tmp.name));
 251                                 tmp.inset = from_ascii("mathnormal");
 252                                 tmp.draw.push_back(unicodesymbol);
 253                         } else {
 254                                 LYXERR(Debug::MATHED, "faking " << to_utf8(tmp.name));
 255                                 tmp.draw = tmp.name;
 256                                 tmp.inset = from_ascii("lyxtex");
 257                         }
 258                 } else {
 259                         // it's a proper inset
 260                         LYXERR(Debug::MATHED, "inset " << to_utf8(tmp.inset)
 261                                               << " used for " << to_utf8(tmp.name));
 262                 }
 263
 264                 if (theMathWordList.find(tmp.name) != theMathWordList.end())
 265                         LYXERR(Debug::MATHED, "readSymbols: inset " << to_utf8(tmp.name)
 266                                 << " already exists.");
 267                 else
 268                         theMathWordList[tmp.name] = tmp;
 269
 270                 // If you change the following output, please adjust
 271                 // development/tools/generate_symbols_images.py.
 272                 LYXERR(Debug::MATHED, "read symbol '" << to_utf8(tmp.name)
 273                         << "  inset: " << to_utf8(tmp.inset)
 274                         << "  draw: " << int(tmp.draw.empty() ? 0 : tmp.draw[0])
 275                         << "  extra: " << to_utf8(tmp.extra)
 276                         << "  requires: " << to_utf8(tmp.requires) << '\'');
 277         }
 278         docstring tmp = from_ascii("cmm");
 279         docstring tmp2 = from_ascii("cmsy");
 280         has_math_fonts = isMathFontAvailable(tmp) && isMathFontAvailable(tmp2);
 281 }
 282
 283
 284 bool isSpecialChar(docstring const & name)
 285 {
 286         if (name.size() != 1)
 287                 return  name == "textasciicircum" || name == "mathcircumflex" ||
 288                         name == "textasciitilde"  || name == "textbackslash";
 289
 290         char_type const c = name.at(0);
 291         return  c == '{' || c == '}' || c == '&' || c == '$' ||
 292                 c == '#' || c == '%' || c == '_';
 293 }
 294
 295
 296 } // namespace anon
 297
 298 MathWordList const & mathedWordList()
 299 {
 300         return theMathWordList;
 301 }
 302
 303
 304 void initMath()
 305 {
 306         static bool initialized = false;
 307         if (!initialized) {
 308                 initialized = true;
 309                 initParser();
 310                 initSymbols();
 311         }
 312 }
 313
 314
 315 bool ensureMath(WriteStream & os, bool needs_math_mode, bool macro)
 316 {
 317         bool brace = os.pendingBrace();
 318         os.pendingBrace(false);
 319         if (!os.latex())
 320                 return brace;
 321         if (os.textMode() && needs_math_mode) {
 322                 os << "\\ensuremath{";
 323                 os.textMode(false);
 324                 brace = true;
 325         } else if (macro && brace && !needs_math_mode) {
 326                 // This is a user defined macro, but not a MathMacro, so we
 327                 // cannot be sure what mode is needed. As it was entered in
 328                 // a text box, we restore the text mode.
 329                 os << '}';
 330                 os.textMode(true);
 331                 brace = false;
 332         }
 333         return brace;
 334 }
 335
 336
 337 int ensureMode(WriteStream & os, InsetMath::mode_type mode,
 338                 bool locked, bool ascii)
 339 {
 340         bool textmode = mode == InsetMath::TEXT_MODE;
 341         if (os.latex() && textmode && os.pendingBrace()) {
 342                 os.os() << '}';
 343                 os.pendingBrace(false);
 344                 os.pendingSpace(false);
 345                 os.textMode(true);
 346         }
 347         int oldmodes = os.textMode() ? 0x01 : 0;
 348         os.textMode(textmode);
 349         oldmodes |= os.lockedMode() ? 0x02 : 0;
 350         os.lockedMode(locked);
 351         oldmodes |= os.asciiOnly() ? 0x04 : 0;
 352         os.asciiOnly(ascii);
 353         return oldmodes;
 354 }
 355
 356
 357 latexkeys const * in_word_set(docstring const & str)
 358 {
 359         MathWordList::iterator it = theMathWordList.find(str);
 360         return it != theMathWordList.end() ? &(it->second) : 0;
 361 }
 362
 363
 364 MathAtom createInsetMath(char const * const s, Buffer * buf)
 365 {
 366         return createInsetMath(from_utf8(s), buf);
 367 }
 368
 369
 370 MathAtom createInsetMath(docstring const & s, Buffer * buf)
 371 {
 372         //lyxerr << "creating inset with name: '" << to_utf8(s) << '\'' << endl;
 373         if ((s == "ce" || s == "cf") && buf
 374             && buf->params().use_package("mhchem") == BufferParams::package_off)
 375                 return MathAtom(new MathMacro(buf, s));
 376
 377         latexkeys const * l = in_word_set(s);
 378         if (l) {
 379                 docstring const & inset = l->inset;
 380                 //lyxerr << " found inset: '" << inset << '\'' << endl;
 381                 if (inset == "ref")
 382                         return MathAtom(new InsetMathRef(buf, l->name));
 383                 if (inset == "overset")
 384                         return MathAtom(new InsetMathOverset(buf));
 385                 if (inset == "underset")
 386                         return MathAtom(new InsetMathUnderset(buf));
 387                 if (inset == "decoration")
 388                         return MathAtom(new InsetMathDecoration(buf, l));
 389                 if (inset == "space")
 390                         return MathAtom(new InsetMathSpace(to_ascii(l->name), ""));
 391                 if (inset == "dots")
 392                         return MathAtom(new InsetMathDots(l));
 393                 if (inset == "mbox")
 394                         return MathAtom(new InsetMathBox(buf, l->name));
 395 //              if (inset == "fbox")
 396 //                      return MathAtom(new InsetMathFBox(l));
 397                 if (inset == "style")
 398                         return MathAtom(new InsetMathSize(buf, l));
 399                 if (inset == "font")
 400                         return MathAtom(new InsetMathFont(buf, l));
 401                 if (inset == "oldfont")
 402                         return MathAtom(new InsetMathFontOld(buf, l));
 403                 if (inset == "matrix")
 404                         return MathAtom(new InsetMathAMSArray(buf, s));
 405                 if (inset == "split")
 406                         return MathAtom(new InsetMathSplit(buf, s));
 407                 if (inset == "big")
 408                         // we can't create a InsetMathBig, since the argument
 409                         // is missing.
 410                         return MathAtom(new InsetMathUnknown(s));
 411                 return MathAtom(new InsetMathSymbol(l));
 412         }
 413
 414         if (s.size() == 2 && s[0] == '#' && s[1] >= '1' && s[1] <= '9')
 415                 return MathAtom(new MathMacroArgument(s[1] - '0'));
 416         if (s.size() == 3 && s[0] == '\\' && s[1] == '#'
 417                         && s[2] >= '1' && s[2] <= '9')
 418                 return MathAtom(new MathMacroArgument(s[2] - '0'));
 419         if (s == "boxed")
 420                 return MathAtom(new InsetMathBoxed(buf));
 421         if (s == "fbox")
 422                 return MathAtom(new InsetMathFBox(buf));
 423         if (s == "framebox")
 424                 return MathAtom(new InsetMathMakebox(buf, true));
 425         if (s == "makebox")
 426                 return MathAtom(new InsetMathMakebox(buf, false));
 427         if (s == "kern")
 428                 return MathAtom(new InsetMathKern);
 429         if (s.substr(0, 8) == "xymatrix") {
 430                 char spacing_code = '\0';
 431                 Length spacing;
 432                 bool equal_spacing = false;
 433                 size_t const len = s.length();
 434                 size_t i = 8;
 435                 if (i < len && s[i] == '@') {
 436                         ++i;
 437                         if (i < len && s[i] == '!') {
 438                                 equal_spacing = true;
 439                                 ++i;
 440                                 if (i < len) {
 441                                         switch (s[i]) {
 442                                         case '0':
 443                                         case 'R':
 444                                         case 'C':
 445                                                 spacing_code = static_cast<char>(s[i]);
 446                                         }
 447                                 }
 448                         } else if (i < len) {
 449                                 switch (s[i]) {
 450                                 case 'R':
 451                                 case 'C':
 452                                 case 'M':
 453                                 case 'W':
 454                                 case 'H':
 455                                 case 'L':
 456                                         spacing_code = static_cast<char>(s[i]);
 457                                         ++i;
 458                                         break;
 459                                 }
 460                                 if (i < len && s[i] == '=') {
 461                                         ++i;
 462                                         spacing = Length(to_ascii(s.substr(i)));
 463                                 }
 464                         }
 465                 }
 466                 return MathAtom(new InsetMathXYMatrix(buf, spacing, spacing_code,
 467                         equal_spacing));
 468         }
 469
 470         if (s == "Diagram")
 471                 return MathAtom(new InsetMathDiagram(buf));
 472         if (s == "xrightarrow" || s == "xleftarrow")
 473                 return MathAtom(new InsetMathXArrow(buf, s));
 474         if (s == "split" || s == "alignedat")
 475                 return MathAtom(new InsetMathSplit(buf, s));
 476         if (s == "cases")
 477                 return MathAtom(new InsetMathCases(buf));
 478         if (s == "substack")
 479                 return MathAtom(new InsetMathSubstack(buf));
 480         if (s == "subarray" || s == "array")
 481                 return MathAtom(new InsetMathArray(buf, s, 1, 1));
 482         if (s == "sqrt")
 483                 return MathAtom(new InsetMathSqrt(buf));
 484         if (s == "root")
 485                 return MathAtom(new InsetMathRoot(buf));
 486         if (s == "tabular")
 487                 return MathAtom(new InsetMathTabular(buf, s, 1, 1));
 488         if (s == "stackrel")
 489                 return MathAtom(new InsetMathStackrel(buf, false));
 490         // This string value is only for math toolbar use, no LaTeX name
 491         if (s == "stackrelthree")
 492                 return MathAtom(new InsetMathStackrel(buf, true));
 493         if (s == "binom")
 494                 return MathAtom(new InsetMathBinom(buf, InsetMathBinom::BINOM));
 495         if (s == "dbinom")
 496                 return MathAtom(new InsetMathBinom(buf, InsetMathBinom::DBINOM));
 497         if (s == "tbinom")
 498                 return MathAtom(new InsetMathBinom(buf, InsetMathBinom::TBINOM));
 499         if (s == "choose")
 500                 return MathAtom(new InsetMathBinom(buf, InsetMathBinom::CHOOSE));
 501         if (s == "brace")
 502                 return MathAtom(new InsetMathBinom(buf, InsetMathBinom::BRACE));
 503         if (s == "brack")
 504                 return MathAtom(new InsetMathBinom(buf, InsetMathBinom::BRACK));
 505         if (s == "frac")
 506                 return MathAtom(new InsetMathFrac(buf));
 507         if (s == "cfrac")
 508                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::CFRAC));
 509         if (s == "dfrac")
 510                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::DFRAC));
 511         if (s == "tfrac")
 512                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::TFRAC));
 513         if (s == "over")
 514                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::OVER));
 515         if (s == "nicefrac")
 516                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::NICEFRAC));
 517         if (s == "unitfrac")
 518                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::UNITFRAC));
 519         // These string values are only for math toolbar use, no LaTeX names
 520         if (s == "unitfracthree")
 521                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::UNITFRAC, 3));
 522         if (s == "unitone")
 523                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::UNIT, 1));
 524         if (s == "unittwo")
 525                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::UNIT));
 526         if (s == "cfracleft")
 527                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::CFRACLEFT));
 528         if (s == "cfracright")
 529                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::CFRACRIGHT));
 530         //if (s == "infer")
 531         //      return MathAtom(new MathInferInset);
 532         if (s == "atop")
 533                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::ATOP));
 534         if (s == "lefteqn")
 535                 return MathAtom(new InsetMathLefteqn(buf));
 536         if (s == "boldsymbol")
 537                 return MathAtom(new InsetMathBoldSymbol(buf, InsetMathBoldSymbol::AMS_BOLD));
 538         if (s == "bm")
 539                 return MathAtom(new InsetMathBoldSymbol(buf, InsetMathBoldSymbol::BM_BOLD));
 540         if (s == "heavysymbol" || s == "hm")
 541                 return MathAtom(new InsetMathBoldSymbol(buf, InsetMathBoldSymbol::BM_HEAVY));
 542         if (s == "color" || s == "normalcolor")
 543                 return MathAtom(new InsetMathColor(buf, true));
 544         if (s == "textcolor")
 545                 return MathAtom(new InsetMathColor(buf, false));
 546         if (s == "hphantom")
 547                 return MathAtom(new InsetMathPhantom(buf, InsetMathPhantom::hphantom));
 548         if (s == "phantom")
 549                 return MathAtom(new InsetMathPhantom(buf, InsetMathPhantom::phantom));
 550         if (s == "vphantom")
 551                 return MathAtom(new InsetMathPhantom(buf, InsetMathPhantom::vphantom));
 552         if (s == "cancel")
 553                 return MathAtom(new InsetMathCancel(buf, InsetMathCancel::cancel));
 554         if (s == "bcancel")
 555                 return MathAtom(new InsetMathCancel(buf, InsetMathCancel::bcancel));
 556         if (s == "xcancel")
 557                 return MathAtom(new InsetMathCancel(buf, InsetMathCancel::xcancel));
 558         if (s == "cancelto")
 559                 return MathAtom(new InsetMathCancelto(buf));
 560         if (s == "smash")
 561                 return MathAtom(new InsetMathPhantom(buf, InsetMathPhantom::smash));
 562         if (s == "mathclap")
 563                 return MathAtom(new InsetMathPhantom(buf, InsetMathPhantom::mathclap));
 564         if (s == "mathllap")
 565                 return MathAtom(new InsetMathPhantom(buf, InsetMathPhantom::mathllap));
 566         if (s == "mathrlap")
 567                 return MathAtom(new InsetMathPhantom(buf, InsetMathPhantom::mathrlap));
 568         if (s == "ensuremath")
 569                 return MathAtom(new InsetMathEnsureMath(buf));
 570         if (s == "sideset")
 571                 return MathAtom(new InsetMathSideset(buf, true, true));
 572         // The following 3 string values are only for math toolbar use, no LaTeX names
 573         if (s == "sidesetr")
 574                 return MathAtom(new InsetMathSideset(buf, false, true));
 575         if (s == "sidesetl")
 576                 return MathAtom(new InsetMathSideset(buf, true, false));
 577         if (s == "sidesetn")
 578                 return MathAtom(new InsetMathSideset(buf, false, false));
 579         if (isSpecialChar(s))
 580                 return MathAtom(new InsetMathSpecialChar(s));
 581         if (s == " ")
 582                 return MathAtom(new InsetMathSpace(" ", ""));
 583
 584         if (s == "regexp")
 585                 return MathAtom(new InsetMathHull(buf, hullRegexp));
 586
 587         return MathAtom(new MathMacro(buf, s));
 588 }
 589
 590
 591 bool createInsetMath_fromDialogStr(docstring const & str, MathData & ar)
 592 {
 593         // An example str:
 594         // "ref LatexCommand ref\nreference \"sec:Title\"\n\\end_inset\n\n";
 595         docstring name;
 596         docstring body = split(str, name, ' ');
 597
 598         if (name == "ref") {
 599                 InsetCommandParams icp(REF_CODE);
 600                 // FIXME UNICODE
 601                 InsetCommand::string2params(to_utf8(str), icp);
 602                 Encoding const * const utf8 = encodings.fromLyXName("utf8");
 603                 OutputParams op(utf8);
 604                 mathed_parse_cell(ar, icp.getCommand(op));
 605         } else if (name == "mathspace") {
 606                 InsetSpaceParams isp(true);
 607                 InsetSpace::string2params(to_utf8(str), isp);
 608                 InsetSpace is(isp);
 609                 TexRow texrow;
 610                 odocstringstream ods;
 611                 otexstream os(ods, texrow);
 612                 Encoding const * const ascii = encodings.fromLyXName("ascii");
 613                 OutputParams op(ascii);
 614                 is.latex(os, op);
 615                 mathed_parse_cell(ar, ods.str());
 616                 if (ar.size() == 2) {
 617                         // remove "{}"
 618                         if (ar[1].nucleus()->asBraceInset())
 619                                 ar.pop_back();
 620                 }
 621         } else
 622                 return false;
 623
 624         if (ar.size() != 1)
 625                 return false;
 626
 627         return ar[0].nucleus();
 628 }
 629
 630
 631 bool isAsciiOrMathAlpha(char_type c)
 632 {
 633         return isASCII(c) || Encodings::isMathAlpha(c);
 634 }
 635
 636
 637 } // namespace lyx