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#!/usr/bin/perl
if ($#ARGV != 2 && $#ARGV != 3) {
die "Usage: $0 <changelog> <stop at> <start at> [<source changelog>]\n";
}
if ($#ARGV == 2) {
push(@ARGV, "debian.master/changelog")
}
my ($changelog, $end, $start, $source_changelog) = @ARGV;
$end =~ s/^\D+//;
$start =~ s/^\D+//;
sub version_cmp($$) {
my @a = split(/[\.-]+/, $_[0]);
my @b = split(/[\.-]+/, $_[1]);
for (my $i = 1;; $i++) {
if (!defined $a[$i]) {
if (!defined $b[$i]) {
return 0;
}
return -1;
}
if (!defined $b[$i]) {
return 1;
}
if ($a[$i] < $b[$i]) {
return -1;
}
if ($a[$i] > $b[$i]) {
return 1;
}
}
}
my @changes = ();
my $output = 0;
open(CHG, "<$source_changelog") ||
open(CHG, "<debian/changelog") ||
die "$0: debian/changelog: open failed - $!\n";
while (<CHG>) {
if (/^\S+\s+\((.*)\)/) {
if (version_cmp($1, $end) <= 0) {
last;
}
if ($1 eq $start) {
$output = 1;
}
if ($output) {
push(@changes, "\n [ Ubuntu: $1 ]\n\n");
next;
}
}
next if ($output == 0);
next if (/^\s*$/);
next if (/^\s--/);
next if (/^\s\s[^\*\s]/);
push(@changes, $_);
}
close(CHG);
open(CHANGELOG, "< $changelog") or die "Cannot open changelog";
open(NEW, "> $changelog.new") or die "Cannot open new changelog";
$printed = 3;
while (<CHANGELOG>) {
if (/^ CHANGELOG: /) {
$printed--;
print NEW;
if ($printed == 0) {
print NEW @changes;
}
next;
}
print NEW;
}
close(NEW);
close(CHANGELOG);
rename("$changelog.new", "$changelog");