From 7c11c8ec5f568984ee720fc677959f9d2c9dfd32 Mon Sep 17 00:00:00 2001
From: Sebastian Pipping <sebastian@pipping.org>
Date: Sat, 27 Feb 2010 03:37:45 +0100
Subject: Add check of herds in metadata.xml

---
 pym/repoman/herdbase.py  | 87 ++++++++++++++++++++++++++++++++++++++++++++++++
 pym/repoman/utilities.py | 33 +++++++++++++++++-
 2 files changed, 119 insertions(+), 1 deletion(-)
 create mode 100644 pym/repoman/herdbase.py

(limited to 'pym')

diff --git a/pym/repoman/herdbase.py b/pym/repoman/herdbase.py
new file mode 100644
index 000000000..3734a2f0a
--- /dev/null
+++ b/pym/repoman/herdbase.py
@@ -0,0 +1,87 @@
+# -*- coding: utf-8 -*-
+# repoman: Herd database analysis
+# Copyright 2010 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id: $
+
+import xml.etree.ElementTree as ET
+from xml.parsers.expat import ExpatError
+from portage.exception import ParseError
+
+__all__ = [
+	"make_herd_base"
+]
+
+_SPECIAL_HERDS = set(('no-herd',))
+
+def _make_email(nick_name):
+	if not nick_name.endswith('@gentoo.org'):
+		nick_name = nick_name + '@gentoo.org'
+	return nick_name
+
+
+class HerdBase(object):
+	def __init__(self, herd_to_emails, all_emails):
+		self.herd_to_emails = herd_to_emails
+		self.all_emails = all_emails
+
+	def known_herd(self, herd_name):
+		if herd_name in _SPECIAL_HERDS:
+			return True
+		return herd_name in self.herd_to_emails
+
+	def known_maintainer(self, nick_name):
+		return _make_email(nick_name) in self.all_emails
+
+	def maintainer_in_herd(self, nick_name, herd_name):
+		return _make_email(nick_name) in self.herd_to_emails[herd_name]
+
+
+def make_herd_base(filename):
+	herd_to_emails = dict()
+	all_emails = set()
+
+	try:
+		xml_tree = ET.parse(filename)
+	except ExpatError as e:
+		raise ParseError("metadata.xml: " + str(e))
+	
+	herds = xml_tree.findall('herd')
+	for h in herds:
+		_herd_name = h.find('name')
+		if _herd_name is None:
+			continue
+		herd_name = _herd_name.text.strip()
+		del _herd_name
+
+		maintainers = h.findall('maintainer')
+		herd_emails = set()
+		for m in maintainers:
+			_m_email = m.find('email')
+			if _m_email is None:
+				continue
+			m_email = _m_email.text.strip()
+
+			herd_emails.add(m_email)
+			all_emails.add(m_email)
+
+		herd_to_emails[herd_name] = herd_emails
+
+	return HerdBase(herd_to_emails, all_emails)
+
+
+if __name__ == '__main__':
+	h = make_herd_base('/usr/portage/metadata/herds.xml')
+
+	assert(h.known_herd('sound'))
+	assert(not h.known_herd('media-sound'))
+
+	assert(h.known_maintainer('sping'))
+	assert(h.known_maintainer('sping@gentoo.org'))
+	assert(not h.known_maintainer('portage'))
+
+	assert(h.maintainer_in_herd('zmedico@gentoo.org', 'tools-portage'))
+	assert(not h.maintainer_in_herd('pva@gentoo.org', 'tools-portage'))
+
+	import pprint
+	pprint.pprint(h.herd_to_emails)
diff --git a/pym/repoman/utilities.py b/pym/repoman/utilities.py
index d30552ed4..1efed7663 100644
--- a/pym/repoman/utilities.py
+++ b/pym/repoman/utilities.py
@@ -15,7 +15,9 @@ __all__ = [
 	"get_commit_message_with_editor",
 	"get_commit_message_with_stdin",
 	"have_profile_dir",
-	"parse_metadata_use"
+	"parse_metadata_use",
+	"UnknownHerdsError",
+	"check_metadata"
 ]
 
 import codecs
@@ -30,6 +32,7 @@ except ImportError:
 from xml.dom import minidom
 from xml.dom import NotFoundErr
 from xml.parsers.expat import ExpatError
+import xml.etree.ElementTree as ET
 from portage import os
 from portage import _encodings
 from portage import _unicode_decode
@@ -149,6 +152,34 @@ def parse_metadata_use(metadata_xml_content, uselist=None):
 	finally:
 		metadatadom.unlink()
 
+
+class UnknownHerdsError(ValueError):
+	def __init__(self, herd_names):
+		_plural = len(herd_names) != 1
+		super(UnknownHerdsError, self).__init__(
+			'Unknown %s %s' % (_plural and 'herds' or 'herd',
+			','.join('"%s"' % e for e in herd_names)))
+
+
+def check_metadata_herds(xml_tree, herd_base):
+	herd_nodes = xml_tree.findall('herd')
+	unknown_herds = [name for name in
+			(e.text.strip() for e in herd_nodes)
+			if not herd_base.known_herd(name)]
+
+	if unknown_herds:
+		raise UnknownHerdsError(unknown_herds)
+
+
+def check_metadata(metadata_xml_content, herd_base):
+	try:
+		xml_tree = ET.fromstring(metadata_xml_content)
+	except (ExpatError, ) as e:
+		raise exception.ParseError("metadata.xml: " + str(e))
+
+	check_metadata_herds(xml_tree, herd_base)
+
+
 def FindPackagesToScan(settings, startdir, reposplit):
 	""" Try to find packages that need to be scanned
 	
-- 
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