backportpackage: new script for testing backport requests in a PPA.

backportpackage

@@ -0,0 +1,108 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+# ##################################################################
+#
+# 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; version 2.
+#
+# 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.
+#
+# See file /usr/share/common-licenses/GPL-2 for more details.
+#
+# ##################################################################
+
+import logging
+import optparse
+import os
+import shutil
+import subprocess
+import sys
+import tempfile
+
+from debian.changelog import Changelog
+
+devnull = open('/dev/null', 'r+')
+
+def error(msg, *args, **kwargs):
+    logging.error(msg, *args, **kwargs)
+    sys.exit(1)
+
+def parse(args):
+    usage = 'Usage: %prog <source package> <source release> <dest release> <upload target>'
+    p = optparse.OptionParser(usage)
+
+    opts, args = p.parse_args(args)
+    if len(args) != 4:
+        p.error('Invalid arguments')
+
+    return opts, args
+
+def main(args):
+    logging.basicConfig(level=logging.INFO)
+
+    _, (package, source_release, dest_release, upload) = parse(args[1:])
+
+    tmpdir = tempfile.mkdtemp()
+    try:
+        for pocket in ('-updates', '-security', ''):
+            try:
+                subprocess.check_call(['pull-lp-source', package, source_release + pocket],
+                                      cwd=tmpdir,
+                                      stdout=devnull, stderr=devnull)
+                logging.info('Found package %s in pocket %s' % (package, source_release + pocket))
+                break
+            except subprocess.CalledProcessError:
+                continue
+        else:
+            error('Unable to find package %s in release %s' % (package, source_release))
+
+        for srcdir in os.listdir(tmpdir):
+            srcdir = os.path.join(tmpdir, srcdir)
+            if os.path.isdir(srcdir):
+                break
+        else:
+            error('Something went wrong unpacking package %s' % package)
+
+        cl = Changelog(open(os.path.join(srcdir, 'debian/changelog')))
+        v = cl.get_version()
+
+        bp_version = str(v) + ('~%s1' % dest_release)
+        bp_dist = dest_release
+        if upload.startswith('ppa:'):
+            bp_version += '~ppa1'
+        elif upload == 'ubuntu':
+            bp_dist += '-backports'
+        subprocess.check_call(['dch',
+                               '--force-bad-version',
+                               '--preserve',
+                               '--newversion', bp_version,
+                               '--distribution', dest_release,
+                               'No-change backport to %s' % dest_release],
+                              cwd=srcdir)
+        subprocess.check_call(['debuild', '-S'],
+                               cwd=srcdir)
+
+        if ':' in bp_version:
+            bp_version = bp_version[bp_version.find(':')+1:]
+
+        print 'Please check the package in %s carefully' % tmpdir
+        while True:
+            answer = raw_input('Do you still want to upload this to %s? [Y/n] ' % upload).strip().lower()
+            if answer in ('', 'y', 'yes'):
+                break
+            elif answer in ('n', 'no'):
+                return 2
+        
+        subprocess.check_call(['dput',
+                               upload,
+                               '%s_%s_source.changes' % (package, bp_version)],
+                              cwd=tmpdir)
+    finally:
+        shutil.rmtree(tmpdir)
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv))

debian/changelog

@@ -1,10 +1,14 @@
 ubuntu-dev-tools (0.108) UNRELEASED; urgency=low
 
+  [ Stefano Rivera ]
   * lp-shell, import-bug-from-debian:
     Use the 'production' LP instance instead of 'edge' (which is going away).
   * pbuilder-dist: Fix typo in local archive support, introduced in 0.107.
 
- -- Stefano Rivera <stefanor@ubuntu.com>  Sat, 11 Dec 2010 12:33:37 +0200
+  [ Evan Broder ]
+  * backportpackage: new script for testing backport requests in a PPA.
+
+ -- Evan Broder <evan@ebroder.net>  Sat, 11 Dec 2010 14:11:54 -0800
 
 ubuntu-dev-tools (0.107) experimental; urgency=low
 

doc/backportpackage.1

@@ -0,0 +1,18 @@
+.TH BACKPORTPACKAGE "1" "December 2010" "ubuntu-dev-tools"
+.SH NAME
+backportpackage \- helper to test package backports
+.SH SYNOPSIS
+.B backportpackage
+\fI<package name> <source release> <dest release> <upload target>\fR
+.SH DESCRIPTION
+\fIbackportpackage\fR fetches a package from one Ubuntu release and
+creates a no-change backport of that package to a previous release,
+uploading the resulting backport for testing.
+.PP
+\fIbackportpackage\fR is only recommended for testing backports in a
+PPA, not uploading backports to the Ubuntu archive.
+.SH AUTHOR
+\fIbackportpackage\fR and this manpage were written by Evan Broder
+<evan@ebroder.net>
+.PP
+Both are released under GNU General Public License, version 2.