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         docstring cmd(from_ascii("\\") + name);
 124         bool is_combining;
 125         bool termination;
 126         c = Encodings::fromLaTeXCommand(cmd, Encodings::MATH_CMD,
 127                                         is_combining, termination);
 128         if (c == 0 && name == "varOmega") {
 129                 // fallback for bug 7954, unicodesymbols does not list
 130                 // \\varOmega because of requirements, but this might change
 131                 cmd = from_ascii("\\mathit{\\Omega}");
 132                 c = Encodings::fromLaTeXCommand(cmd, Encodings::MATH_CMD,
 133                                                 is_combining, termination);
 134         }
 135         return c != 0 && !is_combining;
 136 }
 137
 138
 139 void initSymbols()
 140 {
 141         FileName const filename = libFileSearch(string(), "symbols");
 142         LYXERR(Debug::MATHED, "read symbols from " << filename);
 143         if (filename.empty()) {
 144                 lyxerr << "Could not find symbols file" << endl;
 145                 return;
 146         }
 147
 148         ifstream fs(filename.toFilesystemEncoding().c_str());
 149         string line;
 150         bool skip = false;
 151         while (getline(fs, line)) {
 152                 int charid     = 0;
 153                 int fallbackid = 0;
 154                 if (line.empty() || line[0] == '#')
 155                         continue;
 156
 157                 // special case of iffont/else/endif
 158                 if (line.size() >= 7 && line.substr(0, 6) == "iffont") {
 159                         istringstream is(line);
 160                         string tmp;
 161                         is >> tmp;
 162                         is >> tmp;
 163                         docstring t = from_utf8(tmp);
 164                         skip = !isMathFontAvailable(t);
 165                         continue;
 166                 } else if (line.size() >= 4 && line.substr(0, 4) == "else") {
 167                         skip = !skip;
 168                         continue;
 169                 } else if (line.size() >= 5 && line.substr(0, 5) == "endif") {
 170                         skip = false;
 171                         continue;
 172                 } else if (skip)
 173                         continue;
 174
 175                 // special case of pre-defined macros
 176                 if (line.size() > 8 && line.substr(0, 5) == "\\def\\") {
 177                         //lyxerr << "macro definition: '" << line << '\'' << endl;
 178                         istringstream is(line);
 179                         string macro;
 180                         string requires;
 181                         is >> macro >> requires;
 182                         MacroTable::iterator it = MacroTable::globalMacros().insert(
 183                                         0, from_utf8(macro), requires);
 184                         // If you change the following output, please adjust
 185                         // development/tools/generate_symbols_images.py.
 186                         LYXERR(Debug::MATHED, "read symbol '" << to_utf8(it->first)
 187                                 << "  inset: macro"
 188                                 << "  draw: 0"
 189                                 << "  extra: "
 190                                 << "  requires: " << requires << '\'');
 191                         continue;
 192                 }
 193
 194                 idocstringstream is(from_utf8(line));
 195                 latexkeys tmp;
 196                 is >> tmp.name >> tmp.inset;
 197                 if (isFontName(tmp.inset))
 198                         is >> charid >> fallbackid >> tmp.extra >> tmp.xmlname;
 199                 else
 200                         is >> tmp.extra;
 201                 // requires is optional
 202                 if (is) {
 203                         is >> tmp.requires;
 204                         // backward compatibility
 205                         if (tmp.requires == "esintoramsmath")
 206                                 tmp.requires = from_ascii("esint|amsmath");
 207                 } else {
 208                         LYXERR(Debug::MATHED, "skipping line '" << line << "'\n"
 209                                 << to_utf8(tmp.name) << ' ' << to_utf8(tmp.inset) << ' '
 210                                 << to_utf8(tmp.extra));
 211                         continue;
 212                 }
 213
 214                 if (isFontName(tmp.inset)) {
 215                         // tmp.inset _is_ the fontname here.
 216                         // create fallbacks if necessary
 217
 218                         // store requirements as long as we can
 219                         if (tmp.requires.empty()) {
 220                                 if (tmp.inset == "msa" || tmp.inset == "msb")
 221                                         tmp.requires = from_ascii("amssymb");
 222                                 else if (tmp.inset == "wasy")
 223                                         tmp.requires = from_ascii("wasysym");
 224                                 else if (tmp.inset == "mathscr")
 225                                         tmp.requires = from_ascii("mathrsfs");
 226                         }
 227
 228                         // symbol font is not available sometimes
 229                         docstring symbol_font = from_ascii("lyxsymbol");
 230                         char_type unicodesymbol = 0;
 231
 232                         if (tmp.extra == "func" || tmp.extra == "funclim" || tmp.extra == "special") {
 233                                 LYXERR(Debug::MATHED, "symbol abuse for " << to_utf8(tmp.name));
 234                                 tmp.draw = tmp.name;
 235                         } else if (isMathFontAvailable(tmp.inset) && canBeDisplayed(charid)) {
 236                                 LYXERR(Debug::MATHED, "symbol available for " << to_utf8(tmp.name));
 237                                 tmp.draw.push_back(char_type(charid));
 238                         } else if (fallbackid && isMathFontAvailable(symbol_font) &&
 239                                    canBeDisplayed(fallbackid)) {
 240                                 if (tmp.inset == "cmex")
 241                                         tmp.inset = from_ascii("lyxsymbol");
 242                                 else
 243                                         tmp.inset = from_ascii("lyxboldsymbol");
 244                                 LYXERR(Debug::MATHED, "symbol fallback for " << to_utf8(tmp.name));
 245                                 tmp.draw.push_back(char_type(fallbackid));
 246                         } else if (isUnicodeSymbolAvailable(tmp.name, unicodesymbol)) {
 247                                 LYXERR(Debug::MATHED, "unicode fallback for " << to_utf8(tmp.name));
 248                                 tmp.inset = from_ascii("mathnormal");
 249                                 tmp.draw.push_back(unicodesymbol);
 250                         } else {
 251                                 LYXERR(Debug::MATHED, "faking " << to_utf8(tmp.name));
 252                                 tmp.draw = tmp.name;
 253                                 tmp.inset = from_ascii("lyxtex");
 254                         }
 255                 } else {
 256                         // it's a proper inset
 257                         LYXERR(Debug::MATHED, "inset " << to_utf8(tmp.inset)
 258                                               << " used for " << to_utf8(tmp.name));
 259                 }
 260
 261                 if (theMathWordList.find(tmp.name) != theMathWordList.end())
 262                         LYXERR(Debug::MATHED, "readSymbols: inset " << to_utf8(tmp.name)
 263                                 << " already exists.");
 264                 else
 265                         theMathWordList[tmp.name] = tmp;
 266
 267                 // If you change the following output, please adjust
 268                 // development/tools/generate_symbols_images.py.
 269                 LYXERR(Debug::MATHED, "read symbol '" << to_utf8(tmp.name)
 270                         << "  inset: " << to_utf8(tmp.inset)
 271                         << "  draw: " << int(tmp.draw.empty() ? 0 : tmp.draw[0])
 272                         << "  extra: " << to_utf8(tmp.extra)
 273                         << "  requires: " << to_utf8(tmp.requires) << '\'');
 274         }
 275         docstring tmp = from_ascii("cmm");
 276         docstring tmp2 = from_ascii("cmsy");
 277         has_math_fonts = isMathFontAvailable(tmp) && isMathFontAvailable(tmp2);
 278 }
 279
 280
 281 bool isSpecialChar(docstring const & name)
 282 {
 283         if (name.size() != 1)
 284                 return  name == "textasciicircum" || name == "mathcircumflex" ||
 285                         name == "textasciitilde"  || name == "textbackslash";
 286
 287         char_type const c = name.at(0);
 288         return  c == '{' || c == '}' || c == '&' || c == '$' ||
 289                 c == '#' || c == '%' || c == '_';
 290 }
 291
 292
 293 } // namespace anon
 294
 295 MathWordList const & mathedWordList()
 296 {
 297         return theMathWordList;
 298 }
 299
 300
 301 void initMath()
 302 {
 303         static bool initialized = false;
 304         if (!initialized) {
 305                 initialized = true;
 306                 initParser();
 307                 initSymbols();
 308         }
 309 }
 310
 311
 312 bool ensureMath(WriteStream & os, bool needs_math_mode, bool macro)
 313 {
 314         bool brace = os.pendingBrace();
 315         os.pendingBrace(false);
 316         if (!os.latex())
 317                 return brace;
 318         if (os.textMode() && needs_math_mode) {
 319                 os << "\\ensuremath{";
 320                 os.textMode(false);
 321                 brace = true;
 322         } else if (macro && brace && !needs_math_mode) {
 323                 // This is a user defined macro, but not a MathMacro, so we
 324                 // cannot be sure what mode is needed. As it was entered in
 325                 // a text box, we restore the text mode.
 326                 os << '}';
 327                 os.textMode(true);
 328                 brace = false;
 329         }
 330         return brace;
 331 }
 332
 333
 334 int ensureMode(WriteStream & os, InsetMath::mode_type mode,
 335                 bool locked, bool ascii)
 336 {
 337         bool textmode = mode == InsetMath::TEXT_MODE;
 338         if (os.latex() && textmode && os.pendingBrace()) {
 339                 os.os() << '}';
 340                 os.pendingBrace(false);
 341                 os.pendingSpace(false);
 342                 os.textMode(true);
 343         }
 344         int oldmodes = os.textMode() ? 0x01 : 0;
 345         os.textMode(textmode);
 346         oldmodes |= os.lockedMode() ? 0x02 : 0;
 347         os.lockedMode(locked);
 348         oldmodes |= os.asciiOnly() ? 0x04 : 0;
 349         os.asciiOnly(ascii);
 350         return oldmodes;
 351 }
 352
 353
 354 latexkeys const * in_word_set(docstring const & str)
 355 {
 356         MathWordList::iterator it = theMathWordList.find(str);
 357         return it != theMathWordList.end() ? &(it->second) : 0;
 358 }
 359
 360
 361 MathAtom createInsetMath(char const * const s, Buffer * buf)
 362 {
 363         return createInsetMath(from_utf8(s), buf);
 364 }
 365
 366
 367 MathAtom createInsetMath(docstring const & s, Buffer * buf)
 368 {
 369         //lyxerr << "creating inset with name: '" << to_utf8(s) << '\'' << endl;
 370         if ((s == "ce" || s == "cf") && buf
 371             && buf->params().use_package("mhchem") == BufferParams::package_off)
 372                 return MathAtom(new MathMacro(buf, s));
 373
 374         latexkeys const * l = in_word_set(s);
 375         if (l) {
 376                 docstring const & inset = l->inset;
 377                 //lyxerr << " found inset: '" << inset << '\'' << endl;
 378                 if (inset == "ref")
 379                         return MathAtom(new InsetMathRef(buf, l->name));
 380                 if (inset == "overset")
 381                         return MathAtom(new InsetMathOverset(buf));
 382                 if (inset == "underset")
 383                         return MathAtom(new InsetMathUnderset(buf));
 384                 if (inset == "decoration")
 385                         return MathAtom(new InsetMathDecoration(buf, l));
 386                 if (inset == "space")
 387                         return MathAtom(new InsetMathSpace(to_ascii(l->name), ""));
 388                 if (inset == "dots")
 389                         return MathAtom(new InsetMathDots(l));
 390                 if (inset == "mbox")
 391                         return MathAtom(new InsetMathBox(buf, l->name));
 392 //              if (inset == "fbox")
 393 //                      return MathAtom(new InsetMathFBox(l));
 394                 if (inset == "style")
 395                         return MathAtom(new InsetMathSize(buf, l));
 396                 if (inset == "font")
 397                         return MathAtom(new InsetMathFont(buf, l));
 398                 if (inset == "oldfont")
 399                         return MathAtom(new InsetMathFontOld(buf, l));
 400                 if (inset == "matrix")
 401                         return MathAtom(new InsetMathAMSArray(buf, s));
 402                 if (inset == "split")
 403                         return MathAtom(new InsetMathSplit(buf, s));
 404                 if (inset == "big")
 405                         // we can't create a InsetMathBig, since the argument
 406                         // is missing.
 407                         return MathAtom(new InsetMathUnknown(s));
 408                 return MathAtom(new InsetMathSymbol(l));
 409         }
 410
 411         if (s.size() == 2 && s[0] == '#' && s[1] >= '1' && s[1] <= '9')
 412                 return MathAtom(new MathMacroArgument(s[1] - '0'));
 413         if (s.size() == 3 && s[0] == '\\' && s[1] == '#'
 414                         && s[2] >= '1' && s[2] <= '9')
 415                 return MathAtom(new MathMacroArgument(s[2] - '0'));
 416         if (s == "boxed")
 417                 return MathAtom(new InsetMathBoxed(buf));
 418         if (s == "fbox")
 419                 return MathAtom(new InsetMathFBox(buf));
 420         if (s == "framebox")
 421                 return MathAtom(new InsetMathMakebox(buf, true));
 422         if (s == "makebox")
 423                 return MathAtom(new InsetMathMakebox(buf, false));
 424         if (s == "kern")
 425                 return MathAtom(new InsetMathKern);
 426         if (s.substr(0, 8) == "xymatrix") {
 427                 char spacing_code = '\0';
 428                 Length spacing;
 429                 bool equal_spacing = false;
 430                 size_t const len = s.length();
 431                 size_t i = 8;
 432                 if (i < len && s[i] == '@') {
 433                         ++i;
 434                         if (i < len && s[i] == '!') {
 435                                 equal_spacing = true;
 436                                 ++i;
 437                                 if (i < len) {
 438                                         switch (s[i]) {
 439                                         case '0':
 440                                         case 'R':
 441                                         case 'C':
 442                                                 spacing_code = static_cast<char>(s[i]);
 443                                         }
 444                                 }
 445                         } else if (i < len) {
 446                                 switch (s[i]) {
 447                                 case 'R':
 448                                 case 'C':
 449                                 case 'M':
 450                                 case 'W':
 451                                 case 'H':
 452                                 case 'L':
 453                                         spacing_code = static_cast<char>(s[i]);
 454                                         ++i;
 455                                         break;
 456                                 }
 457                                 if (i < len && s[i] == '=') {
 458                                         ++i;
 459                                         spacing = Length(to_ascii(s.substr(i)));
 460                                 }
 461                         }
 462                 }
 463                 return MathAtom(new InsetMathXYMatrix(buf, spacing, spacing_code,
 464                         equal_spacing));
 465         }
 466
 467         if (s == "Diagram")
 468                 return MathAtom(new InsetMathDiagram(buf));
 469         if (s == "xrightarrow" || s == "xleftarrow" ||
 470                 s == "xhookrightarrow" || s == "xhookleftarrow" ||
 471                 s == "xRightarrow" || s == "xLeftarrow" ||
 472                 s == "xleftrightarrow" || s == "xLeftrightarrow" ||
 473                 s == "xrightharpoondown" || s == "xrightharpoonup" ||
 474                 s == "xleftharpoondown" || s == "xleftharpoonup" ||
 475                 s == "xleftrightharpoons" || s == "xrightleftharpoons" ||
 476                 s == "xmapsto")
 477                 return MathAtom(new InsetMathXArrow(buf, s));
 478         if (s == "split" || s == "alignedat")
 479                 return MathAtom(new InsetMathSplit(buf, s));
 480         if (s == "cases")
 481                 return MathAtom(new InsetMathCases(buf));
 482         if (s == "substack")
 483                 return MathAtom(new InsetMathSubstack(buf));
 484         if (s == "subarray" || s == "array")
 485                 return MathAtom(new InsetMathArray(buf, s, 1, 1));
 486         if (s == "sqrt")
 487                 return MathAtom(new InsetMathSqrt(buf));
 488         if (s == "root")
 489                 return MathAtom(new InsetMathRoot(buf));
 490         if (s == "tabular")
 491                 return MathAtom(new InsetMathTabular(buf, s, 1, 1));
 492         if (s == "stackrel")
 493                 return MathAtom(new InsetMathStackrel(buf, false));
 494         // This string value is only for math toolbar use, no LaTeX name
 495         if (s == "stackrelthree")
 496                 return MathAtom(new InsetMathStackrel(buf, true));
 497         if (s == "binom")
 498                 return MathAtom(new InsetMathBinom(buf, InsetMathBinom::BINOM));
 499         if (s == "dbinom")
 500                 return MathAtom(new InsetMathBinom(buf, InsetMathBinom::DBINOM));
 501         if (s == "tbinom")
 502                 return MathAtom(new InsetMathBinom(buf, InsetMathBinom::TBINOM));
 503         if (s == "choose")
 504                 return MathAtom(new InsetMathBinom(buf, InsetMathBinom::CHOOSE));
 505         if (s == "brace")
 506                 return MathAtom(new InsetMathBinom(buf, InsetMathBinom::BRACE));
 507         if (s == "brack")
 508                 return MathAtom(new InsetMathBinom(buf, InsetMathBinom::BRACK));
 509         if (s == "frac")
 510                 return MathAtom(new InsetMathFrac(buf));
 511         if (s == "cfrac")
 512                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::CFRAC));
 513         if (s == "dfrac")
 514                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::DFRAC));
 515         if (s == "tfrac")
 516                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::TFRAC));
 517         if (s == "over")
 518                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::OVER));
 519         if (s == "nicefrac")
 520                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::NICEFRAC));
 521         if (s == "unitfrac")
 522                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::UNITFRAC));
 523         // These string values are only for math toolbar use, no LaTeX names
 524         if (s == "unitfracthree")
 525                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::UNITFRAC, 3));
 526         if (s == "unitone")
 527                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::UNIT, 1));
 528         if (s == "unittwo")
 529                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::UNIT));
 530         if (s == "cfracleft")
 531                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::CFRACLEFT));
 532         if (s == "cfracright")
 533                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::CFRACRIGHT));
 534         //if (s == "infer")
 535         //      return MathAtom(new MathInferInset);
 536         if (s == "atop")
 537                 return MathAtom(new InsetMathFrac(buf, InsetMathFrac::ATOP));
 538         if (s == "lefteqn")
 539                 return MathAtom(new InsetMathLefteqn(buf));
 540         if (s == "boldsymbol")
 541                 return MathAtom(new InsetMathBoldSymbol(buf, InsetMathBoldSymbol::AMS_BOLD));
 542         if (s == "bm")
 543                 return MathAtom(new InsetMathBoldSymbol(buf, InsetMathBoldSymbol::BM_BOLD));
 544         if (s == "heavysymbol" || s == "hm")
 545                 return MathAtom(new InsetMathBoldSymbol(buf, InsetMathBoldSymbol::BM_HEAVY));
 546         if (s == "color" || s == "normalcolor")
 547                 return MathAtom(new InsetMathColor(buf, true));
 548         if (s == "textcolor")
 549                 return MathAtom(new InsetMathColor(buf, false));
 550         if (s == "hphantom")
 551                 return MathAtom(new InsetMathPhantom(buf, InsetMathPhantom::hphantom));
 552         if (s == "phantom")
 553                 return MathAtom(new InsetMathPhantom(buf, InsetMathPhantom::phantom));
 554         if (s == "vphantom")
 555                 return MathAtom(new InsetMathPhantom(buf, InsetMathPhantom::vphantom));
 556         if (s == "cancel")
 557                 return MathAtom(new InsetMathCancel(buf, InsetMathCancel::cancel));
 558         if (s == "bcancel")
 559                 return MathAtom(new InsetMathCancel(buf, InsetMathCancel::bcancel));
 560         if (s == "xcancel")
 561                 return MathAtom(new InsetMathCancel(buf, InsetMathCancel::xcancel));
 562         if (s == "cancelto")
 563                 return MathAtom(new InsetMathCancelto(buf));
 564         if (s == "smash")
 565                 return MathAtom(new InsetMathPhantom(buf, InsetMathPhantom::smash));
 566         // The following 2 string values are only for math toolbar use, no LaTeX names
 567         if (s == "smashb")
 568                 return MathAtom(new InsetMathPhantom(buf, InsetMathPhantom::smashb));
 569         if (s == "smasht")
 570                 return MathAtom(new InsetMathPhantom(buf, InsetMathPhantom::smasht));
 571         if (s == "mathclap")
 572                 return MathAtom(new InsetMathPhantom(buf, InsetMathPhantom::mathclap));
 573         if (s == "mathllap")
 574                 return MathAtom(new InsetMathPhantom(buf, InsetMathPhantom::mathllap));
 575         if (s == "mathrlap")
 576                 return MathAtom(new InsetMathPhantom(buf, InsetMathPhantom::mathrlap));
 577         if (s == "ensuremath")
 578                 return MathAtom(new InsetMathEnsureMath(buf));
 579         if (s == "sideset")
 580                 return MathAtom(new InsetMathSideset(buf, true, true));
 581         // The following 3 string values are only for math toolbar use, no LaTeX names
 582         if (s == "sidesetr")
 583                 return MathAtom(new InsetMathSideset(buf, false, true));
 584         if (s == "sidesetl")
 585                 return MathAtom(new InsetMathSideset(buf, true, false));
 586         if (s == "sidesetn")
 587                 return MathAtom(new InsetMathSideset(buf, false, false));
 588         if (isSpecialChar(s))
 589                 return MathAtom(new InsetMathSpecialChar(s));
 590         if (s == " ")
 591                 return MathAtom(new InsetMathSpace(" ", ""));
 592
 593         if (s == "regexp")
 594                 return MathAtom(new InsetMathHull(buf, hullRegexp));
 595
 596         return MathAtom(new MathMacro(buf, s));
 597 }
 598
 599
 600 bool createInsetMath_fromDialogStr(docstring const & str, MathData & ar)
 601 {
 602         // An example str:
 603         // "ref LatexCommand ref\nreference \"sec:Title\"\n\\end_inset\n\n";
 604         docstring name;
 605         docstring body = split(str, name, ' ');
 606
 607         if (name == "ref") {
 608                 InsetCommandParams icp(REF_CODE);
 609                 // FIXME UNICODE
 610                 InsetCommand::string2params(to_utf8(str), icp);
 611                 Encoding const * const utf8 = encodings.fromLyXName("utf8");
 612                 OutputParams op(utf8);
 613                 mathed_parse_cell(ar, icp.getCommand(op));
 614         } else if (name == "mathspace") {
 615                 InsetSpaceParams isp(true);
 616                 InsetSpace::string2params(to_utf8(str), isp);
 617                 InsetSpace is(isp);
 618                 TexRow texrow;
 619                 odocstringstream ods;
 620                 otexstream os(ods, texrow);
 621                 Encoding const * const ascii = encodings.fromLyXName("ascii");
 622                 OutputParams op(ascii);
 623                 is.latex(os, op);
 624                 mathed_parse_cell(ar, ods.str());
 625                 if (ar.size() == 2) {
 626                         // remove "{}"
 627                         if (ar[1].nucleus()->asBraceInset())
 628                                 ar.pop_back();
 629                 }
 630         } else
 631                 return false;
 632
 633         if (ar.size() != 1)
 634                 return false;
 635
 636         return ar[0].nucleus();
 637 }
 638
 639
 640 bool isAsciiOrMathAlpha(char_type c)
 641 {
 642         return isASCII(c) || Encodings::isMathAlpha(c);
 643 }
 644
 645
 646 } // namespace lyx