src/mathed/math_factory.C

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