scripts/git-changelog: generate rpm changelog script

Signed-off-by: Maxim Uvarov <maxim.uvarov@oracle.com>

diff --git a/scripts/git-changelog b/scripts/git-changelog
new file mode 100755 (executable)
index 0000000..3e3c6c3
--- /dev/null
+++ b/scripts/git-changelog
@@ -0,0 +1,104 @@
+#!/usr/bin/python
+#
+# git-changelog - Output a rpm changelog
+#
+# Copyright (C) 2009-2010  Red Hat, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published
+# by the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+#
+# 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 Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Author: David Cantrell <dcantrell@redhat.com>
+# Author: Brian C. Lane <bcl@redhat.com>
+
+import os
+import re
+import subprocess
+import sys
+import textwrap
+from optparse import OptionParser
+
+
+
+class ChangeLog:
+    def __init__(self, tag):
+        self.tag = tag
+        self.ignore = None
+
+    def _getCommitDetail(self, commit, field):
+        proc = subprocess.Popen(['git', 'log', '-1',
+                                 "--pretty=format:%s" % field, commit],
+                                stdout=subprocess.PIPE,
+                                stderr=subprocess.PIPE).communicate()
+
+        ret = proc[0].strip('\n').split('\n')
+
+        if len(ret) == 1 and ret[0].find('@') != -1:
+            ret = ret[0].split('@')[0]
+        elif len(ret) == 1:
+            ret = ret[0]
+        else:
+            ret = filter(lambda x: x != '', ret)
+
+        return ret
+
+    def getLog(self):
+        range = "%s.." % (self.tag)
+        proc = subprocess.Popen(['git', 'log', '--pretty=oneline', range],
+                                stdout=subprocess.PIPE,
+                                stderr=subprocess.PIPE).communicate()
+        lines = filter(lambda x: x.find('l10n: ') != 41 and \
+                                 x.find('Merge commit') != 41 and \
+                                 x.find('Merge branch') != 41,
+                       proc[0].strip('\n').split('\n'))
+
+        if self.ignore and self.ignore != '':
+            for commit in self.ignore.split(','):
+                lines = filter(lambda x: not x.startswith(commit), lines)
+
+        log = []
+        for line in lines:
+            fields = line.split(' ')
+            commit = fields[0]
+
+            summary = self._getCommitDetail(commit, "%s")
+            long = self._getCommitDetail(commit, "%b")
+            author = self._getCommitDetail(commit, "%aN")
+
+            log.append(("%s (%s)" % (summary.strip(), author)))
+
+        return log
+
+    def formatLog(self):
+        s = ""
+        for msg in self.getLog():
+            sublines = textwrap.wrap(msg, 77)
+            s = s + "- %s\n" % sublines[0]
+
+            if len(sublines) > 1:
+                for subline in sublines[1:]:
+                    s = s + "  %s\n" % subline
+
+        return s
+
+def main():
+    parser = OptionParser()
+    parser.add_option("-t", "--tag", dest="tag",
+                      help="Last tag, changelog is commits after this tag")
+    (options, args) = parser.parse_args()
+
+    cl = ChangeLog(options.tag)
+    print cl.formatLog()
+
+if __name__ == "__main__":
+    main()
+