[PATCH 1/1] scripts/gen_sendmail.py: Script Added: Generate git send-email arguments automatically!

[Raphael S. Carvalho]

I guess this script won't be merged upstream, but I think it could be useful for someone else.

Description borrowed from the header:
---------------
!# This script generates the git send-email automatically
!# by looking at the output generated by scripts/get_maintainer.pl
!#
!# You can pass as many patch files as needed.
!# Usage: python send-mail.py [option] <patch1> <patch2> ...

Example of use:
Passed as arguments one patch file and -v (verbose mode).
---------------
raphaelsc@debian:~/kernel/linux$ scripts/gen_sendmail.py -v 0001-kernel-pid.c-Improve-flow-of-a-loop-inside-alloc_pid.patch
git send-email --from "Raphael S. Carvalho <raphael.scarv@xxxxxxxxx>" --to "Eric W. Biederman <ebiederm@xxxxxxxxxxxx>" --to "Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>" --to "Serge E. Hallyn <serge@xxxxxxxxxx>" --to "Serge Hallyn <serge.hallyn@xxxxxxxxxxxxx>" --to "David S. Miller <davem@xxxxxxxxxxxxx>" --cc "linux-kernel@xxxxxxxxxxxxxxx" 0001-kernel-pid.c-Improve-flow-of-a-loop-inside-alloc_pid.patch

* Statistics: Maintainer(s): 5, List(s): 1
---------------

Any bug reports or improvements are welcome!

Signed-off-by: Raphael S. Carvalho <raphael.scarv@xxxxxxxxx>
---
 scripts/gen_sendmail.py |  165 +++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 165 insertions(+), 0 deletions(-)
 create mode 100755 scripts/gen_sendmail.py

diff --git a/scripts/gen_sendmail.py b/scripts/gen_sendmail.py
new file mode 100755
index 0000000..921a8cc
--- /dev/null
+++ b/scripts/gen_sendmail.py
@@ -0,0 +1,165 @@
+#! /usr/bin/env python
+#
+# Generate git send-email arguments (gen_sendmail.py)
+# (c) 2013, Raphael S.Carvalho <raphael.scarv@xxxxxxxxx>
+#
+# This script generates the git send-email automatically
+# by looking at the output generated by scripts/get_maintainer.pl
+#
+# You can pass as many patch files as needed.
+# Usage: python send-mail.py [options] <patch1> <patch2> ...
+#
+# Licensed under the terms of the GNU GPL License version 2
+
+import commands
+import sys
+import StringIO
+import getopt
+
+# Default definitions
+GIT_SENDMAIL = "git send-email"
+SCRIPT = "scripts/get_maintainer.pl"
+
+
+def get_user_gitconfig(git_config):
+	get_name = "git config user.name"
+	get_email = "git config user.email"
+
+	(stat, name) = commands.getstatusoutput(get_name)
+	if (stat != 0):
+		return (stat, get_name)
+
+	(stat, email) = commands.getstatusoutput(get_email)
+	if (stat != 0):
+		return (stat, get_email)
+
+	# Setup git config structure!
+	git_config['user_name'] = name
+	git_config['user_email'] = email
+
+	return (0, None)
+
+
+# Try to execute: get_maintainer.pl <patch>
+def exec_get_maintainers(patch_name):
+	command = SCRIPT + ' ' + patch_name
+	(stat, output) = commands.getstatusoutput(command)
+	return (stat, output)
+
+
+def find_maintainer(maintainers, email):
+	for m in maintainers:
+		if m['email'] == email:
+			return True
+	return False
+
+
+# Get file and/or mail from each line,
+# and build a simple maintainers database.
+def build_list(buf):
+	maintainers = []
+
+	for line in iter(buf.readline, ""):
+		name = ""
+		email = ""
+
+		pos = line.find("<")
+		if pos != -1:
+			name = line[: pos-1].replace('"', "")
+			pos2 = line.find("(")
+			email = line[pos : pos2-1]
+		else:
+			pos = line.find("(")
+			email = line[: pos-1]
+
+		# If not find_maintainer, then add to the list.
+		if not find_maintainer(maintainers, email):
+			maintainer = {'name': name, 'email': email}
+			maintainers.append(maintainer)
+
+	return maintainers
+
+
+# Generates command from the built database.
+def generate_gitmail_cmd(maintainers, git_config, args):
+	mnt_count = list_count = 0
+
+	print '%s --from "%s <%s>"' % \
+		(GIT_SENDMAIL, \
+		git_config['user_name'], git_config['user_email']),
+
+	for m in maintainers:
+		if m['name'] != "":
+			print '--to "%s %s"' % (m['name'], m['email']),
+			mnt_count += 1
+		else:
+			print '--cc "%s"' % m['email'],
+			list_count += 1
+	for arg in args:
+		print arg,
+
+	return (mnt_count, list_count)
+
+
+def usage(program):
+	print 'Usage: %s [options] <patch(es) file>\n' \
+		'-v --verbose: Print verbose messages.\n' \
+		'-h --help: Print this information.\n\n' \
+		'This script must be installed in the directory' \
+		' scripts of linux tree!' % program,
+	sys.exit(2)
+
+
+def main(argc, argv):
+	verbose = False
+
+	try:
+		opts, args = getopt.getopt(argv[1:], 'hv', ['help', 'verbose'])
+		if not opts and argc < 2:
+			usage(argv[0])
+	except getopt.GetoptError, e:
+		print e
+		usage(argv[0])
+
+	arg_count = 1 # program name: argv[0]
+	for opt, arg in opts:
+		arg_count += 1
+		if opt in ('-h', '--help'):
+			usage(argv[0])
+		elif opt in ('-v', '--verbose'):
+			verbose = True
+		else:
+			usage(argv[0])
+	if (arg_count == argc):
+		usage(argv[0])
+
+	git_config = {'user_name': "", 'user_email': ""}
+	(stat, err_msg) = get_user_gitconfig(git_config)
+	if (stat != 0):
+		print "It wasn't possible to execute: %s" % err_msg
+		sys.exit(2)
+
+	final_output = ""
+	args = argv[arg_count:]
+	# Get output regarding to the each patch file!
+	for arg in args:
+		(stat, output) = exec_get_maintainers(arg)
+		if (stat != 0):
+			print '%s: %s failed! Please, check the patch: %s,'  \
+				' and make sure you "installed" this script' \
+				' in the *directory scripts* of Linux tree.' \
+				% (argv[0], SCRIPT, arg)
+			sys.exit(2)
+		final_output += (output + '\n')
+
+	buf = StringIO.StringIO(final_output)
+	(mnt_count, list_count) = \
+		generate_gitmail_cmd(build_list(buf), git_config, args)
+
+	if (verbose):
+		print "\n\n* Statistics: Maintainer(s): %d, List(s): %d" \
+			% (mnt_count, list_count)
+
+
+if __name__ == "__main__":
+	main(len(sys.argv), sys.argv)
-- 
1.7.2.5

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