[Debian-astro-maintainers] Bug#1077881: wcstools-3.9.7 crlf change

[Сергей Фёдоров]

Package: wcstools
X-Debbugs-Cc: serfyod0v at yandex.ru
Version: 3.9.7-1
Severity: normal
Tags: patch

Dear Maintainer,

In the package "wcstools-3.9.7" the program "crlf" changes the symbol 0Dh to 0Ah.
As a result, an empty string appears instead of each 0Dh.

-- System Information:
Debian Release: 12.6
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.1.0-22-amd64 (SMP w/8 CPU threads; PREEMPT)
Locale: LANG=ru_RU.UTF-8, LC_CTYPE=ru_RU.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages wcstools depends on:
ii  libc6         2.36-9+deb12u7
ii  libwcstools1  3.9.7-1

wcstools recommends no packages.

wcstools suggests no packages.

-- no debconf information

   Copyright (C) 2006
   Smithsonian Astrophysical Observatory, Cambridge, MA USA

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License
   as published by the Free Software Foundation; either version 2
   of the License, or (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software Foundation,
   Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>

static int verbose = 0;         /* verbose/debugging flag */
static void usage();
static void CRFix();

int
main (ac, av)
int ac;
char **av;
{
    char *fn;
    char *str;

    /* crack arguments */
    for (av++; --ac > 0 && *(str = *av) == '-'; av++) {
        char c;
        while ((c = *++str))
        switch (c) {

        case 'v':       /* more verbosity */
            verbose++;
            break;

        default:
            usage();
            break;
        }
    }

    /* There are ac remaining file names starting at av[0] */
    if (ac == 0)
        usage ();

    while (ac-- > 0) {
        fn = *av++;
        if (verbose)
            printf ("%s:\n", fn);
            CRFix (fn);
        if (verbose)
            printf ("\n");
    }

    return (0);
}

static void
usage ()
{
    fprintf (stderr,"CRLF: Change carriage returns to linefeeds in a file\n");
    fprintf(stderr,"Usage:  crlf [-v] file1 file2 ... filen\n");
    fprintf(stderr,"  -v: verbose\n");
    exit (1);
}

static void
CRFix (name)

char *name;

{
    char buffer[1000];
    char buffer2[1000];  // 2024-07-28 16:31
    int fd;
    int nbr, i;
    int nbr2;  // 2024-07-28 16:31

    fd = open (name, O_RDONLY);
    nbr = 1000;
    while (nbr > 0) {
        nbr = read (fd, buffer, 1000);
        nbr2 = 0;  // 2024-07-28 16:31
        if (nbr > 0) {
            for (i = 0; i < nbr; i++) {
                /*   // 2024-07-28 16:31 comment because an empty string is created
                if (buffer[i] == (char) 13)
                // buffer[i] = (char) 10;
                */
                if (buffer[i] != (char) 13) {  // 2024-07-28 16:31 insert block
                    buffer2[nbr2] = buffer[i];
                    nbr2++;
                }
            }
            // (void) write (1, buffer, nbr); // 2024-07-28 16:31 comment
            (void) write (1, buffer2, nbr2);  // 2024-07-28 16:31
        }
    }
    return;
}
/* Feb 10 1998    New program
 *
 * Apr  3 2005    Declare main to be int
 *
 * Jun 20 2006    Clean up code
 */