Current File : //usr/share/perl5/NeedRestart/Strings.pm
# needrestart - Restart daemons after library updates.
#
# Authors:
# Thomas Liske <thomas@fiasko-nw.net>
#
# Copyright Holder:
# 2013 - 2020 (C) Thomas Liske [http://fiasko-nw.net/~thomas/]
#
# License:
# 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 package; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
package NeedRestart::Strings;
use strict;
use warnings;
require Exporter;
our @ISA = qw(Exporter);
our @EXPORT = qw(
nr_strings
nr_strings_fh
);
my $LOGPREF = '[Strings]';
# This strings implementation has been taken from PPT 0.14:
#
# Copyright 1999 Nathan Scott Thompson <quimby at city-net dot com>
#
my $PUNCTUATION = join '\\', split //, q/`~!@#$%^&*()-+={}|[]\:";'<>?,.\//; #`
my $PRINTABLE = '\w \t' . $PUNCTUATION;
my $CHUNKSIZE = 4096;
sub nr_strings_fh($$$) {
my $debug = shift;
my $re = shift;
my $fh = shift;
binmode($fh);
my $offset = 0;
while ($_ or read($fh, $_, $CHUNKSIZE)) {
$offset += length($1) if(s/^([^$PRINTABLE]+)//o);
my $string = '';
do {
$string .= $1 if(s/^([$PRINTABLE]+)//o);
} until ($_ or !read($fh, $_, $CHUNKSIZE));
if ($string =~ /$re/) {
close($fh);
return $string;
}
$offset += length($string);
}
close($fh);
return undef;
}
sub nr_strings($$$) {
my $debug = shift;
my $re = shift;
my $fn = shift;
my $fh;
unless(open($fh, '<', $fn)) {
print STDERR "$LOGPREF Could not open file ($fn): $!\n" if($debug);
return undef;
}
return nr_strings_fh($debug, $re, $fh);
}
1;
Mini Shell