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C/C++ Source or Header  |  1979-01-10  |  751 b   |  53 lines
  1. /* /usr/lib/calendar produces an egrep -f file
  2.    that will select today's and tomorrow's
  3.    calendar entries, with special weekend provisions
  4.  
  5.    used by calendar command
  6. */
  7. #include <time.h>
  8.  
  9. #define DAY (3600*24L)
  10.  
  11. char *month[] = {
  12.     "[Jj]an",
  13.     "[Ff]eb",
  14.     "[Mm]ar",
  15.     "[Aa]pr",
  16.     "[Mm]ay",
  17.     "[Jj]un",
  18.     "[Jj]ul",
  19.     "[Aa]ug",
  20.     "[Ss]ep",
  21.     "[Oo]ct",
  22.     "[Nn]ov",
  23.     "[Dd]ec"
  24. };
  25. struct tm *localtime();
  26.  
  27. tprint(t)
  28. long t;
  29. {
  30.     struct tm *tm;
  31.     tm = localtime(&t);
  32.     printf("(^|[ (,;])((%s[^ ]* *|%d/)0*%d)([^0123456789]|$)\n",
  33.         month[tm->tm_mon], tm->tm_mon + 1, tm->tm_mday);
  34. }
  35.  
  36. main()
  37. {
  38.     long t;
  39.     time(&t);
  40.     tprint(t);
  41.     switch(localtime(&t)->tm_wday) {
  42.     case 5:
  43.         t += DAY;
  44.         tprint(t);
  45.     case 6:
  46.         t += DAY;
  47.         tprint(t);
  48.     default:
  49.         t += DAY;
  50.         tprint(t);
  51.     }
  52. }
  53.