Subject: '.Z' files 
Distribution: world
Organization: Megadodo, Inc.
Date: Thu, 27 Aug 1992 16:54:55 +0000


In article <92239.170816U60145@uicvm.uic.edu> U60145@uicvm.uic.edu writes:

> 
> or archived.  What am I doing wrong?   Also, does anyone know where I can get
> a _compiled_ version of uudecode?  I got uudecode.c, but I tried both Borland
> C++ and Microsoft C compiler and niether will compile it.  Thanks.
> 

Here's the source for uudecode, which *definitely* works - I just
compiled and tested it using Turbo C++. TC++ displayed a few warnings,
but it did complie okay, and it successfully decoded a fiel for me.


-------------cut here-----------------
/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

/*
 * Modified 12 April 1990 by Mark Adler for use on MSDOS systems with
 * Microsoft C and Turbo C.
 *
 * Modifed 13 February 1991 by Greg Roelofs for use on VMS systems.  As
 * with the MS-DOS version, the setting of the file mode has been disabled.
 * Compile and link normally (but note that the shared-image link option
 * produces a binary only 6 blocks long, as opposed to the 137-block one
 * produced by an ordinary link).  To set up the VMS symbol to run the
 * program ("run uudecode filename" won't work), do:
 *              uudecode :== "$disk:[directory]uudecode.exe"
 * and don't forget the leading "$" or it still won't work.  The binaries
 * produced by this program are in VMS "stream-LF" format; this makes no
 * difference to VMS when running decoded executables, nor to VMS unzip,
 * but other programs such as zoo or arc may or may not require the file
 * to be "BILFed" (or "unBILFed" or whatever).  Also, unlike the other
 * flavors, VMS files don't get overwritten (a higher version is created).
 */

#ifndef lint
static char sccsid[] = "@(#)uudecode.c  5.5 (Berkeley) 7/6/88";
#endif /* not lint */

#ifdef __MSDOS__        /* For Turbo C */
#define MSDOS 1
#endif

/*
 * uudecode [input]
 *
 * create the specified file, decoding as you go.
 * used with uuencode.
 */
#include <stdio.h>

#ifdef VMS
#  include <types.h>
#  include <stat.h>
#else
#  ifndef MSDOS            /* i.e., UNIX */
#    include <pwd.h>
#  endif
#  include <sys/types.h>   /* MSDOS or UNIX */
#  include <sys/stat.h>
#endif

/* single-character decode */
#define DEC(c)  (((c) - ' ') & 077)

main(argc, argv)
char **argv;
{
        FILE *in, *out;
        int mode;
        char dest[128];
        char buf[80];

        /* optional input arg */
        if (argc > 1) {
                if ((in = fopen(argv[1], "r")) == NULL) {
                        perror(argv[1]);
                        exit(1);
                }
                argv++; argc--;
        } else
                in = stdin;

        if (argc != 1) {
                printf("Usage: uudecode [infile]\n");
                exit(2);
        }

        /* search for header line */
        for (;;) {
                if (fgets(buf, sizeof buf, in) == NULL) {
                        fprintf(stderr, "No begin line\n");
                        exit(3);
                }
                if (strncmp(buf, "begin ", 6) == 0)
                        break;
        }
        (void)sscanf(buf, "begin %o %s", &mode, dest);

#if !defined(MSDOS) && !defined(VMS)    /* i.e., UNIX */
        /* handle ~user/file format */
        if (dest[0] == '~') {
                char *sl;
                struct passwd *getpwnam();
                struct passwd *user;
                char dnbuf[100], *index(), *strcat(), *strcpy();

                sl = index(dest, '/');
                if (sl == NULL) {
                        fprintf(stderr, "Illegal ~user\n");
                        exit(3);
                }
                *sl++ = 0;
                user = getpwnam(dest+1);
                if (user == NULL) {
                        fprintf(stderr, "No such user as %s\n", dest);
                        exit(4);
                }
                strcpy(dnbuf, user->pw_dir);
                strcat(dnbuf, "/");
                strcat(dnbuf, sl);
                strcpy(dest, dnbuf);
        }
#endif  /* !defined(MSDOS) && !defined(VMS) */

        /* create output file */
#ifdef MSDOS
        out = fopen(dest, "wb");        /* Binary file */
#else
        out = fopen(dest, "w");
#endif
        if (out == NULL) {
                perror(dest);
                exit(4);
        }
#if !defined(MSDOS) && !defined(VMS)    /* i.e., UNIX */
        chmod(dest, mode);
#endif

        decode(in, out);

        if (fgets(buf, sizeof buf, in) == NULL || strcmp(buf, "end\n")) {
                fprintf(stderr, "No end line\n");
                exit(5);
        }
        exit(0);
}

/*
 * copy from in to out, decoding as you go along.
 */
decode(in, out)
FILE *in;
FILE *out;
{
        char buf[80];
        char *bp;
        int n;

        for (;;) {
                /* for each input line */
                if (fgets(buf, sizeof buf, in) == NULL) {
                        printf("Short file\n");
                        exit(10);
                }
                n = DEC(buf[0]);
                if (n <= 0)
                        break;

                bp = &buf[1];
                while (n > 0) {
                        outdec(bp, out, n);
                        bp += 4;
                        n -= 3;
                }
        }
}

/*
 * output a group of 3 bytes (4 input characters).
 * the input chars are pointed to by p, they are to
 * be output to file f.  n is used to tell us not to
 * output all of them at the end of the file.
 */
outdec(p, f, n)
char *p;
FILE *f;
{
        int c1, c2, c3;

        c1 = DEC(*p) << 2 | DEC(p[1]) >> 4;
        c2 = DEC(p[1]) << 4 | DEC(p[2]) >> 2;
        c3 = DEC(p[2]) << 6 | DEC(p[3]);
        if (n >= 1)
                putc(c1, f);
        if (n >= 2)
                putc(c2, f);
        if (n >= 3)
                putc(c3, f);
}

/*
 * Return the ptr in sp at which the character c appears;
 * NULL if not found
 */

#define NULL    0

char *
index(sp, c)
register char *sp, c;
{
        do {
                if (*sp == c)
                        return(sp);
        } while (*sp++);
        return(NULL);
}

----------------cut here----------------------

Regards,

   Tony.


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| Tony Butler                           Internet: abutler@ariel.demon.co.uk  |
| Surrey,                                 TCP/IP: 158.152.8.125              |
| England.                               Fidonet: Anthony Butler @ 2:250/408 |
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