2.11BSD#431 - /usr/src/old/num.c

   1: #if !defined(lint) && defined(DOSCCS)
   2: static char *sccsid = "@(#)num.c	4.2.1 (2.11BSD) 1997/7/29";
   3: #endif
   4: 
   5: #include    <stdio.h>
   6: #define     formfeed 0xc
   7: 
   8: /*
   9:  * number - a cat like program which prints a file with line
  10:  *	    numbers. Printing of numbers is suppressed on blank
  11:  *	    lines.
  12:  *
  13:  * Original Version by William Joy, June 1977
  14:  * Updated October 1979 by M. Kirk McKusick
  15:  * Updated to version 4.2 10/13/82
  16:  */
  17: main(ac, av)
  18:     int ac;
  19:     char *av[];
  20:     {
  21:     register int argc = ac;
  22:     register char **argv = av;
  23:     register int lino;
  24:     register char *lineptr;
  25:     register FILE *STDOUT = stdout;
  26:     register FILE *STDIN = stdin;
  27:     char line[512];
  28:     char stdobuf[BUFSIZ], stdibuf[BUFSIZ];
  29: 
  30:     argv++;
  31:     argc--;
  32:     lino = 1;
  33:     setbuf(STDIN,stdibuf);
  34:     setbuf(STDOUT,stdobuf);
  35:     do
  36:         {
  37:         if (argc)
  38:             if (freopen(*argv++, "r", STDIN) == NULL)
  39:                 {
  40:                 perror(*--argv);
  41:                 exit(1);
  42:                 }
  43:         for(;;)
  44:             {
  45:             lineptr = line;
  46:             *lineptr = 0;
  47:             fscanf(STDIN,"%[^\n]",lineptr);
  48:             if (feof(STDIN))
  49:                 break;
  50:             if (*lineptr == formfeed)
  51:                 putc(*lineptr++,STDOUT);
  52:             if (!*lineptr)
  53:                 putc('\n',STDOUT);
  54:             else
  55:                 fprintf(STDOUT,"%6d  %s\n",lino,lineptr);
  56:             lino++;
  57:             getc(STDIN);
  58:             }
  59:         }
  60:         while (--argc > 0);
  61:     exit();
  62:     }

Defined functions

Defined variables

Defined macros