This program takes 16ms instead of ~700ms on my computer. This saves
15s out of 100s for the debpolicy-newreject test (in its current
state).
Currently this is only used by various things in devscripts because
dpkg-source uses /usr/lib/dpkg/parsechangelog/debian directly via a
Perl module Dpkg::Changelog::Parse.
set -e
. tests/lib
+t-tstunt dpkg-parsechangelog
+
t-debpolicy
t-prep-newpackage example 1.0
--- /dev/null
+#!/usr/bin/perl -w
+#
+# In an example:
+#
+# $ time dpkg-parsechangelog >/dev/null
+#
+# real 0m0.712s
+# user 0m0.656s
+# sys 0m0.048s
+# $ time ~/things/Dgit/dgit/tests/tstunt/dpkg-parsechangelog >/dev/null
+#
+# real 0m0.016s
+# user 0m0.000s
+# sys 0m0.012s
+# $
+
+die if @ARGV;
+
+use strict;
+open C, "debian/changelog" or die $!;
+
+$!=0; $_ = <C>;
+m/^(\S+) \(([^()]+)\) (\S+)\; urgency=(\S+)$/ or die "$!, $_ ?";
+print <<END or die $!;
+Source: $1
+Version: $2
+Distribution: $3
+Urgency: $4
+Changes:
+ $&
+END
+
+my $blanks = 0;
+for (;;) {
+ $!=0; $_ = <C>;
+ if (m/^ -- ([^<>]+\<\S+\>) (\w[^<>]+\w)$/) {
+ print <<END or die $!;
+Maintainer: $1
+Date: $2
+END
+ last;
+ } elsif (m/^ --\s*$/) {
+ last;
+ } elsif (!m/\S/) {
+ $blanks++;
+ } elsif (m/^ .*\n/) {
+ print " .\n" x $blanks or die $!;
+ $blanks=0;
+ print " $_" or die $!;
+ } else {
+ die "$!, $_ ?";
+ }
+}