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#!/usr/bin/perl
# Exercise od
# Copyright (C) 2006-2022 Free Software Foundation, Inc.
# 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 3 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, see <https://www.gnu.org/licenses/>.
use strict;
(my $program_name = $0) =~ s|.*/||;
# Turn off localization of executable's output.
@ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3;
# Use a file in /proc whose size is not likely to
# change between the wc and od invocations.
my $proc_file = '/proc/version';
-f $proc_file
or $proc_file = '/dev/null';
# Count the bytes in $proc_file, _by reading_.
my $len = 0;
open FH, '<', $proc_file
or die "$program_name: can't open '$proc_file' for reading: $!\n";
while (defined (my $line = <FH>))
{
$len += length $line;
}
close FH;
my $proc_file_byte_count = $len;
my @Tests =
(
# Skip the exact length of the input file.
# Up to coreutils-6.9, this would ignore the "-j 1".
['j-bug1', '-c -j 1 -An', {IN=>{g=>'a'}}, {OUT=>''}],
['j-bug2', '-c -j 2 -An', {IN=>{g=>'a'}}, {IN=>{h=>'b'}}, {OUT=>''}],
# Skip the sum of the lengths of the first three inputs.
['j-bug3', '-c -j 3 -An', {IN=>{g=>'a'}}, {IN=>{h=>'b'}},
{IN=>{i=>'c'}}, {OUT=>''}],
# Skip the sum of the lengths of the first three inputs, printing the 4th.
['j-bug4', '-c -j 3 -An', {IN=>{g=>'a'}}, {IN=>{h=>'b'}},
{IN=>{i=>'c'}}, {IN=>{j=>'d'}}, {OUT=>" d\n"}],
# Ensure that od -j doesn't fseek across a nonempty file in /proc,
# even if the kernel reports that the file has stat.st_size = 0.
['j-proc', "-An -c -j $proc_file_byte_count $proc_file",
{IN=>{f2=>'e'}}, {OUT=>" e\n"}],
# Ensure that a large width does not cause trouble.
# From coreutils-7.0 through coreutils-8.21, these would print
# approximately 128KiB of padding.
['wide-a', '-a -w65537 -An', {IN=>{g=>'x'}}, {OUT=>" x\n"}],
['wide-c', '-c -w65537 -An', {IN=>{g=>'x'}}, {OUT=>" x\n"}],
['wide-x', '-tx1 -w65537 -An', {IN=>{g=>'B'}}, {OUT=>" 42\n"}],
);
my $save_temps = $ENV{DEBUG};
my $verbose = $ENV{VERBOSE};
my $prog = 'od';
my $fail = run_tests ($program_name, $prog, \@Tests, $save_temps, $verbose);
exit $fail;
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