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