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From: ast@cs.vu.nl (Andy Tanenbaum)
Newsgroups: comp.os.minix
Subject: Reposting of shar
Message-ID: <2022@ast.cs.vu.nl>
Date: 9 Feb 89 09:09:32 GMT
Sender: ast@cs.vu.nl
Reply-To: ast@cs.vu.nl (Andy Tanenbaum)
Organization: VU Informatica, Amsterdam
Lines: 83


Some people are still using the old shar, which uses gres.
This makes it impossible to de-shar the files on UNIX machines
that do not have gres.  The V1.3 shar uses sed, so these
shar files can be used on MINIX and UNIX.  I would suggest
that everyone throw out their old shar and use the current
one, included below.  If anyone is missing sed, send me
email and I will send it to you.  (I have posted it many
times in the past, and there have been no changes to it in
at least a year or more.  Its crc is:

30068  45809 minix/commands/sed.c

Andy Tanenbaum (ast@cs.vu.nl)

===================== shar.c =========================
/* shar - make a shell archive		Author: Michiel Husijes */

#include <stdio.h>
#include <minix/blocksize.h>

#define IO_SIZE		(10 * BLOCK_SIZE)

char input[IO_SIZE];
char output[IO_SIZE];
int ind = 0;

main(argc, argv)
int argc;
register char *argv[];
{
  register int i;
  int fd;

  for (i = 1; i < argc; i++) {
  	if ((fd = open(argv[i], 0)) < 0) {
  		write(2, "Cannot open ", 12);
  		write(2, argv[i], strlen(argv[i]));
  		write(2, ".\n", 2);
  	}
  	else {
  		print("echo x - ");
  		print(argv[i]);
  		print("\nsed '/^X/s///' > ");
  		print(argv[i]);
  		print(" << '/'\n");
  		cat(fd);
  	}
  }
  if (ind) write(1, output, ind);
  exit(0);
}

cat(fd)
int fd;
{
  static char *current, *last;
  register int r = 0;
  register char *cur_pos = current;

  putchar('X');
  for (; ;) {
  	if (cur_pos == last) {
  		if ((r = read(fd, input, IO_SIZE)) <= 0)
  			break;
  		last = &input[r];
  		cur_pos = input;
  	}
  	putchar(*cur_pos);
  	if (*cur_pos++ == '\n' && cur_pos != last)
  		putchar('X');
  }
  print("/\n");
  (void) close(fd);
  current = cur_pos;
}

print(str)
register char *str;
{
  while (*str)
  	putchar(*str++);
}