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#!/usr/bin/perl
# 2003 by Frank Lichtenheld
#
# just run debian/diff-tarballs in the packages source directory
# it runs then a diff on the content listings of the latest
# two HOWTO tarballs and emits a corresponding changelog entry
# listing add, changed and removed HOWTOs
#
# This script uses the following external commands:
# - tar
# - diff
# - rgrep
use strict;
use warnings;
use File::Basename;
my @files;
opendir my $dh, 'HOWTO' or die "E: couldn't open directory HOWTO: $!";
while( my $f = readdir $dh ) {
$f =~ /^Linux-HOWTOs-\d+\.tar\.bz2$/o && push @files, $f;
}
closedir $dh or warn "W: couldn't close directory HOWTO: $!\n";
die "E: couldn't find two files to diff" if @files < 2;
my ( $newfile, $oldfile ) = reverse sort @files;
my ($newversion) = ($newfile =~ /^Linux-HOWTOs-(\d+)\.tar\.bz2$/);
my ($year, $month, $day) = ($newversion =~ /^(\d{4})(\d{2})(\d{2})$/);
my $debversion = "$year.$month-1";
#print STDERR "I: diffing $newfile ($newversion) against $oldfile\n";
#print STDERR "I: writing list of old HOWTOs\n";
my @old_list = `tar tjvf HOWTO/$oldfile`;
my $num_old = @old_list;
foreach ( @old_list ) {
s/^[-rwx]{10}\s+\w+\/\w+\s+//o;
}
open my $fh, '>', "old-howtos" or die "E: couldn't open old-howtos: $!";
print $fh join( '', @old_list );
close $fh or warn "W: couldn't close old-howtos: $!\n";
#print STDERR "I: writing list of new HOWTOs\n";
my @new_list = `tar tjvf HOWTO/$newfile`;
my $num_new = @new_list;
foreach ( @new_list ) {
s/^[-rwx]{10}\s+\w+\/\w+\s+//o;
}
open $fh, '>', "new-howtos" or die "E: couldn't open new-howtos: $!";
print $fh join( '', @new_list );
close $fh or warn "W: couldn't close new-howtos: $!\n";
my @diff_out = `diff -U 0 old-howtos new-howtos`;
my ( %added, %removed, %modified );
shift @diff_out;
shift @diff_out;
foreach ( @diff_out ) {
chomp;
/^@/ && next;
/\s(HOWTO-)?INDEX$/ && next;
/\s\.htaccess/ && next;
/^-/ && do {
s/^-//;
my ( $size, $date, $time, $name ) = split;
if ( exists $added{$name} ) {
if ( "$date $time" ne $added{$name}{time} ) {
$modified{$name} = {
oldsize => $size,
oldtime => "$date $time",
newsize => $added{$name}{size},
newtime => $added{$name}{time},
};
}
delete $added{$name};
} else {
$removed{$name} = {
size => $size,
time => "$date $time",
};
}
next;
};
/^\+/ && do {
s/^\+//;
my ( $size, $date, $time, $name ) = split;
if ( exists $removed{$name} ) {
if ( "$date $time" ne $removed{$name}{time} ) {
$modified{$name} = {
newsize => $size,
newtime => "$date $time",
oldsize => $removed{$name}{size},
oldtime => $removed{$name}{time},
};
}
delete $removed{$name};
} else {
$added{$name} = {
size => $size,
time => "$date $time",
};
}
next;
};
}
my @nonfree_list = qx'rgrep --exclude "*.svn*" ^HOWTO: debian/copyrights/non-free/ | perl -p -e "s/^\S+\s*//o" | sort | uniq';
my @removed_list = qx'rgrep --exclude "*.svn*" ^HOWTO: debian/copyrights/removed/ | perl -p -e "s/^\S+\s*//o" | sort | uniq';
my @undistributable_list = qx'rgrep --exclude "*.svn*" ^HOWTO: debian/copyrights/undistributable/ | perl -p -e "s/^\S+\s*//o" | sort | uniq';
my %nonfree_list;
my @nonfree_mentioned;
foreach (@nonfree_list, @removed_list, @undistributable_list) {
chomp;
$nonfree_list{$_}++;
}
#print STDERR "D: old_num: $num_old\n";
#print STDERR "D: new_num: $num_new\n";
#print STDERR "D: diff_num: ".($num_new - $num_old)."\n";
#print STDERR "D: rm_num: ".scalar( keys( %removed ))."\n";
#print STDERR "D: m_num: ".scalar( keys( %modified ))."\n";
#print STDERR "D: add_num: ".scalar( keys( %added ))."\n";
print "doc-linux ($debversion) unstable; urgency=low\n\n";
print " * new upstream release ($newversion)\n";
print " * Removed HOWTOs:\n" if scalar( keys( %removed ));
foreach ( sort keys %removed ) {
print " $_\n";
}
print " * Updated HOWTOs:\n" if scalar( keys( %modified ));
foreach ( sort keys %modified ) {
my $nonfree = exists $nonfree_list{$_} ? " (nonfree)" : "";
push(@nonfree_mentioned, $_) if $nonfree;
my $license = qx{rgrep --files-with-matches --exclude "*.svn*" "^HOWTO: $_\$" debian/copyrights};
chomp $license;
$license = basename $license;
print " $_ [$license]$nonfree\n";
}
print " * Added HOWTOs:\n" if scalar( keys( %added ));
foreach ( sort keys %added ) {
#filter out known nonfree HOWTOs in case we diff with a free-only tar ball
unless ( exists $nonfree_list{$_} ) {
print " $_\n";
}
}
print " * All mentioned HOWTOs are free except for: ".
join(", ",sort @nonfree_mentioned)."\n";
print "\n -- \n\n";
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