tstream.cc

   1 #include <fstream.h>
   2 #include <time.h>
   3 #include "tex.hh"
   4 #include "misc.hh"
   5 #include "tstream.hh"
   6 #include "debug.hh"
   7
   8 Tex_stream::Tex_stream(String filename)
   9 {
  10
  11     os = new ofstream(filename);
  12     if (!*os)
  13         error("can't open " + filename);
  14     nest_level = 0;
  15     outputting_comment=false;
  16     header();
  17 }
  18 void
  19 Tex_stream::header()
  20 {
  21     *os << "% Creator: " << get_version() << "\n";
  22     *os << "% Automatically generated, at ";
  23     time_t t(time(0));
  24     *os << ctime(&t)<<"\n";
  25 //*os << "% from input file ..\n";
  26 }
  27 Tex_stream::~Tex_stream()
  28 {
  29     assert(nest_level == 0);
  30     delete os;
  31 }
  32
  33 // print string. don't forget indent.
  34 Tex_stream &
  35 Tex_stream::operator<<(String s)
  36 {
  37     for (const char *cp = s; *cp; cp++) {
  38         if (outputting_comment) {
  39             *os << *cp;
  40             if (*cp == '\n') {
  41                 outputting_comment=false;
  42
  43             }
  44             continue;
  45         }
  46         switch(*cp)
  47             {
  48             case '%':
  49                 outputting_comment = true;
  50                 *os << *cp;
  51                 break;
  52             case '{':
  53                 nest_level++;
  54                 *os << *cp;
  55                 break;
  56             case '}':
  57                 nest_level--;
  58                 *os << *cp;
  59                 assert (nest_level >= 0);
  60                 /* FALL THROUGH */
  61
  62             case '\n':
  63                 *os << "%\n";
  64                 *os << String(' ', nest_level);
  65                 break;
  66             default:
  67                 *os << *cp;
  68                 break;
  69             }
  70     }
  71     return *this;
  72 }
  73
  74
  75 /****************************************************************/