src/mathed/math_factory.C

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