biawebutil.hpp

   1 #ifndef __BIAWEBUTIL__
   2 #define __BIAWEBUTIL__
   3 #include <string>
   4
   5 // utility functions for Biaweb that don't fit into any class and can be used by
   6 // any class
   7 namespace biaweb {
   8     // convert a document title to a file title - strip out the non-alpha
   9     // chars and spaces
  10     std::string convert_title (std::string title)
  11     {
  12         std::string output;
  13         for (char c : title) {
  14             if (isalnum (c))
  15                 output.append (1, c);
  16             else if (isspace (c))
  17                 output.append (1, '_');
  18         }
  19         return output;
  20     }
  21
  22     // escape HTML special characters
  23     std::string escape_html (std::string source)
  24     {
  25         std::string replace_buf;
  26         replace_buf.reserve (source.size());
  27         for (char p : source)
  28         {
  29             switch (p)
  30             {
  31                 case '&' : replace_buf.append ("&amp;"); break;
  32                 case '<' : replace_buf.append ("&lt;"); break;
  33                 case '>' : replace_buf.append ("&gt;"); break;
  34                 case '\"': replace_buf.append ("&quot;"); break;
  35                 case '\'': replace_buf.append ("&apos;"); break;
  36                 default  : replace_buf.append (1, p);
  37             }
  38         }
  39         return replace_buf;
  40     }
  41 }
  42 #endif