Bug#569917: Support base.tar.xz/bz2 as well as tgz

Package: pbuilder
Version: 0.203
Followup-For: Bug #569917

I cooked a little patch that adds a --compressprog command line option and
COMPRESSPROG option in pbuilderrc.

Tested with pigz, to get multithreaded, and therefore much faster
compression/decompression, and xz.

Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 3.1.0-00002-g5eeb7f9 (SMP w/4 CPU cores)
Locale: LANG=C, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages pbuilder depends on:
ii  cdebootstrap           0.5.8+b1
ii  coreutils              8.13-3
ii  debconf [debconf-2.0]  1.5.41
ii  debianutils            4.0.4
ii  debootstrap            1.0.38
ii  wget                   1.13.4-1

Versions of packages pbuilder recommends:
ii  devscripts  2.11.2
ii  fakeroot    1.18.1-1
ii  sudo        1.8.3p1-2

Versions of packages pbuilder suggests:
pn  cowdancer     0.65
pn  gdebi-core    <none>
pn  pbuilder-uml  <none>

-- debconf information:
  pbuilder/mirrorsite: http://ftp.de.debian.org/debian/
  pbuilder/nomirror:
  pbuilder/rewrite: false

1 files changed, 6 insertions, 0 deletions

diff --git a/pbuilder-checkparams b/pbuilder-checkparams
index 2e350d0..c031f18 100755
--- a/pbuilder-checkparams
+++ b/pbuilder-checkparams
@@ -105,6 +105,12 @@ while [ -n "$1" ]; do
 	    fi
 	    shift; shift;
 	    ;;
+	--compressprog)
+	    if [ -n "$2" ]; then
+	        COMPRESSPROG="$2"
+	    fi
+	    shift; shift;
+	    ;;
 	--aptcache)
 	    if [ -n "$2" ]; then
 		if [ -d "$2" ]; then