BSD 3 development

[unix-history] / usr / src / cmd / see.c

#include <stdio.h>

/*
* see - a cat like program which prints like the ex "print" command.
* It always prints backspaces as "^H".
*
* Bill Joy UCB July 13, 1978
*
*/
int     noeol;

main(argc, argv)
       int argc;
       char *argv[];
{
       register c;
       char obuf[BUFSIZ];

       setbuf(stdout, obuf);
       argc--, argv++;
       if (argc > 0 && argv[0][0] == '-')
               noeol++, argc--, argv++;
       do {
               if (argc > 0) {
                       if (freopen(argv[0], "r", stdin) == 0) {
                               perror(argv[0]);
                               exit(1);
                       }
                       argc--, argv++;
               }
               for (;;) {
                       c = getchar();
                       if (c == -1)
                               break;
                       c &= 0177;
                       if (c == 0177)
                               putchar('^'), c = '?';
                       if (c == 033)
                               c = '$';
                       if (c < ' ')
                               switch (c) {

                               case '\n':
                                       break;

                               default:
                                       putchar('^');
                                       c |= 0100;
                               }
                       if (c == '\n' && !noeol)
                               putchar('$');
                       putchar(c);
                       if (c == '\n')
                               fflush(stdout);
               }
       } while (argc > 0);
       exit(0);
}