mark_dead_links.c

   1 #include <stdio.h>
   2
   3 int main(void)
   4 {
   5   int c, state = 0, filenameLen = 0;
   6   char filename[256];
   7
   8   while ((c = getchar()) != EOF)
   9   {
  10     putchar(c);
  11
  12     switch (state)
  13     {
  14       case 0: if (c == '<') state = 1; break;
  15       case 1: state = c == 'a' ? 2 : 0; break;
  16       case 2: state = c == ' ' ? 3 : 0; break;
  17       case 3: state = c == 'h' ? 4 : 0; break;
  18       case 4: state = c == 'r' ? 5 : 0; break;
  19       case 5: state = c == 'e' ? 6 : 0; break;
  20       case 6: state = c == 'f' ? 7 : 0; break;
  21       case 7: state = c == '=' ? 8 : 0; break;
  22       case 8: state = c == '"' ? 9 : 0; break;
  23       case 9:
  24         if (c == '"')
  25         {
  26           filename[filenameLen] = 0;
  27
  28           FILE *f = fopen(filename,"r");
  29
  30           if (!f)
  31             printf(" class=\"dead\"");
  32           else
  33             fclose(f);
  34
  35           filenameLen = 0;
  36           state = 0;
  37         }
  38         else if (filenameLen < 128)
  39         {
  40           filename[filenameLen] = c;
  41           filenameLen++;
  42         }
  43
  44         break;
  45
  46       default: break;
  47     }
  48
  49   }
  50
  51   return 0;
  52 }