Add script to regenerate rt patch series from git

svn path=/dists/sid/linux/; revision=19981

debian/patches/features/all/rt/genpatch.py

@@ -0,0 +1,38 @@
+#!/usr/bin/python
+
+import os, os.path, re, subprocess, sys
+
+def main(repo, version):
+    up_ver = re.sub(r'-rt\d+$', '', version)
+    patch_dir = 'debian/patches/features/all/rt'
+    old_series = set()
+
+    with open(os.path.join(patch_dir, 'series'), 'r') as series_fh:
+        for line in series_fh:
+            name = line.strip()
+            if name != '' and name[0] != '#':
+                old_series.add(name)
+
+    with open(os.path.join(patch_dir, 'series'), 'w') as series_fh:
+        args = ['git', 'format-patch', 'v%s..v%s-rebase' % (up_ver, version)]
+        env = os.environ.copy()
+        env['GIT_DIR'] = os.path.join(repo, '.git')
+        child = subprocess.Popen(args, cwd=patch_dir, env=env,
+                                 stdout=subprocess.PIPE)
+        with child.stdout as pipe:
+            for line in pipe:
+                series_fh.write(line)
+                name = line.strip('\n')
+                if name in old_series:
+                    old_series.remove(name)
+                else:
+                    print 'Added patch', os.path.join(patch_dir, name)
+
+    for name in old_series:
+        print 'Obsoleted patch', os.path.join(patch_dir, name)
+
+if __name__ == '__main__':
+    if len(sys.argv) != 3:
+        print >>sys.stderr, "Usage: %s REPO RT-VERSION" % sys.argv[0]
+        sys.exit(2)
+    main(sys.argv[1], sys.argv[2])