symtable.cc

   1 #include "misc.hh"
   2 #include "debug.hh"
   3 #include "real.hh"
   4 #include "tex.hh"
   5 #include "assoc.hh"
   6 #include "symtable.hh"
   7 #include "const.hh"
   8
   9 Symtable*
  10 Symtables::operator()(String s)
  11 {
  12     if (!done_reading){ // read on demand
  13         *mlog << '(' << fname ;
  14         read();
  15         done_reading = true;
  16         *mlog << ")\n";
  17     }
  18     return Assoc<String, Symtable*>::operator[](s);
  19 }
  20
  21 void
  22 Symtables::read()
  23 {
  24      Text_db symini(fname);
  25      while (1) {
  26          if (symini.eof())
  27              break;
  28          Text_record  r(  symini++);
  29          if (!r.sz())
  30              continue;
  31
  32          assert (r[0] == "table");
  33
  34          String tabnam = r[1];
  35          Symtable * sp = new Symtable;
  36          while (1) {
  37              r = symini++;
  38              if (!r.sz())
  39                  continue;
  40              if (r[0] == "end")
  41                  break;
  42
  43              assert(r.sz() == 6);
  44              int i=0;
  45              String id=r[i++];
  46              String tex=r[i++];
  47              svec<Real> dims;
  48              for (int j=0; j < 4; j++)
  49                  dims.add( r[i++].fvalue() *1.0/CM_TO_PT);
  50
  51              Symbol s(tex, Box(dims));
  52              (*sp)[id] = s;
  53          }
  54          (*this)[tabnam] = sp;
  55      }
  56 }
  57
  58 Symtables the_sym_tables("symbol.ini");
  59
  60
  61 const Symbol*
  62 Symbol::find_ball(int i)
  63 {
  64     int j = intlog2(i);
  65     if (j > 4) j = 4;
  66     Symtable * st = the_sym_tables("balls");
  67     return &(*st)[String(j)];
  68
  69 }
  70
  71 const Symbol*
  72 Symbol::find_rest(int i)
  73 {
  74     int j = intlog2(i);
  75     return &(*the_sym_tables("rests"))[String(j)];
  76 }
  77 const Symbol*
  78 Symbol::find_bar(String s)
  79 {
  80     return &(*the_sym_tables("bars"))[s];
  81 }
  82 /****************************************************************/
  83 // bare bones.
  84
  85 struct Linestaf_symbol : Stretchable_symbol {
  86     int lines;
  87     String operator ()(Real w);
  88     Linestaf_symbol(int n) { lines = n;}
  89 };
  90 // should be done in TeX
  91 String
  92 Linestaf_symbol::operator()(Real w)
  93 {
  94     String s;
  95     s += "\\hbox to 0pt{";
  96     s+= "\\vbox to 0pt{";
  97     for (int i=0; i<lines; i++) {
  98         if (i) s+= "\\vskip1pt";
  99         s+= "\\hrule width " + String(w* HOR_TO_PT) +"pt";
 100     }
 101     s+="\\vss}\\hss}";
 102     return s;
 103 }
 104
 105 const Stretchable_symbol *
 106 Stretchable_symbol::get_linestaff(int n)
 107 {
 108     return new Linestaf_symbol(n);
 109 }