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-rwxr-xr-xirkerhook.py609
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diff --git a/irkerhook.py b/irkerhook.py
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+#!/usr/bin/env python3
+# Copyright (c) 2012 Eric S. Raymond <esr@thyrsus.com>
+# SPDX-License-Identifier: BSD-2-Clause
+'''
+This script contains git porcelain and porcelain byproducts.
+Requires either Python 2.6, or 2.5 with the simplejson library installed
+or Python 3.x.
+
+usage: irkerhook.py [-V] [-n] [--variable=value...] [commit_id...]
+
+This script is meant to be run in an update or post-commit hook.
+Try it with -n to see the notification dumped to stdout and verify
+that it looks sane. With -V this script dumps its version and exits.
+
+See the irkerhook manual page in the distribution for a detailed
+explanation of how to configure this hook.
+
+The default location of the irker proxy, if the project configuration
+does not override it.
+'''
+# SPDX-License-Identifier: BSD-2-Clause
+from __future__ import print_function, absolute_import
+
+# pylint: disable=line-too-long,invalid-name,missing-function-docstring,missing-class-docstring,no-else-break,no-else-return,too-many-instance-attributes,too-many-locals,too-many-branches,too-many-statements,redefined-outer-name,import-outside-toplevel,raise-missing-from
+
+default_server = "localhost"
+IRKER_PORT = 6659
+
+# The default service used to turn your web-view URL into a tinyurl so it
+# will take up less space on the IRC notification line.
+default_tinyifier = u"http://tinyurl.com/api-create.php?url="
+
+# Map magic urlprefix values to actual URL prefixes.
+urlprefixmap = {
+ "viewcvs": "http://%(host)s/viewcvs/%(repo)s?view=revision&revision=",
+ "gitweb": "http://%(host)s/cgi-bin/gitweb.cgi?p=%(repo)s;a=commit;h=",
+ "cgit": "http://%(host)s/cgi-bin/cgit.cgi/%(repo)s/commit/?id=",
+ }
+
+# By default, ship to the freenode #commits list
+default_channels = u"irc://chat.freenode.net/#commits"
+
+#
+# No user-serviceable parts below this line:
+#
+
+version = "2.21"
+
+# pylint: disable=multiple-imports,wrong-import-position
+import os, sys, socket, subprocess, locale, datetime, re
+
+try
+ from shlex import quote as shellquote
+except ImportError:
+ from pipes import quote as shellquote
+
+try:
+ from urllib2 import urlopen, HTTPError
+except ImportError:
+ from urllib.error import HTTPError
+ from urllib.request import urlopen
+
+try:
+ import simplejson as json # Faster, also makes us Python-2.5-compatible
+except ImportError:
+ import json
+
+if sys.version_info.major == 2:
+ # pylint: disable=undefined-variable
+ string_type = unicode
+else:
+ string_type = str
+
+try:
+ getstatusoutput = subprocess.getstatusoutput
+except AttributeError:
+ # pylint: disable=import-error
+ import commands
+ getstatusoutput = commands.getstatusoutput
+
+def do(command):
+ if sys.version_info.major == 2:
+ return string_type(getstatusoutput(command)[1], locale.getlocale()[1] or 'UTF-8')
+ else:
+ return getstatusoutput(command)[1]
+
+# pylint: disable=too-few-public-methods
+class Commit:
+ def __init__(self, extractor, commit):
+ "Per-commit data."
+ self.commit = commit
+ self.branch = None
+ self.rev = None
+ self.mail = None
+ self.author = None
+ self.files = None
+ self.logmsg = None
+ self.url = None
+ self.author_name = None
+ self.author_date = None
+ self.commit_date = None
+ self.id = None
+ self.__dict__.update(extractor.__dict__)
+
+ if sys.version_info.major == 2:
+ # Convert __str__ to __unicode__ for python 2
+ self.__unicode__ = self.__str__
+ # Not really needed, but maybe useful for debugging
+ self.__str__ = lambda x: x.__unicode__().encode('utf-8')
+
+ def __str__(self):
+ "Produce a notification string from this commit."
+ # pylint: disable=no-member
+ if not self.urlprefix:
+ self.url = ""
+ else:
+ # pylint: disable=no-member
+ urlprefix = urlprefixmap.get(self.urlprefix, self.urlprefix)
+ webview = (urlprefix % self.__dict__) + self.commit
+ try:
+ # See it the url is accessible
+ res = urlopen(webview)
+ if self.tinyifier and self.tinyifier.lower() != "none":
+ try:
+ # Didn't get a retrieval error on the web
+ # view, so try to tinyify a reference to it.
+ self.url = urlopen(self.tinyifier + webview).read()
+ try:
+ self.url = self.url.decode('UTF-8')
+ except UnicodeError:
+ pass
+ except IOError:
+ self.url = webview
+ else:
+ self.url = webview
+ except HTTPError as e:
+ if e.code == 401:
+ # Authentication error, so we assume the view is valid
+ self.url = webview
+ else:
+ self.url = ""
+ except IOError:
+ self.url = ""
+ # pylint: disable=no-member
+ res = self.template % self.__dict__
+ return string_type(res, 'UTF-8') if not isinstance(res, string_type) else res
+
+class GenericExtractor:
+ "Generic class for encapsulating data from a VCS."
+ booleans = ["tcp"]
+ numerics = ["maxchannels"]
+ strings = ["email"]
+ def __init__(self, arguments):
+ self.arguments = arguments
+ self.project = None
+ self.repo = None
+ # These aren't really repo data but they belong here anyway...
+ self.email = None
+ self.tcp = True
+ self.tinyifier = default_tinyifier
+ self.server = None
+ self.channels = None
+ self.maxchannels = 0
+ self.template = None
+ self.urlprefix = None
+ self.host = socket.getfqdn()
+ self.cialike = None
+ self.filtercmd = None
+ # Color highlighting is disabled by default.
+ self.color = None
+ self.bold = self.green = self.blue = self.yellow = self.red = ""
+ self.brown = self.magenta = self.cyan = self.reset = ""
+ def activate_color(self, style):
+ "IRC color codes."
+ if style == 'mIRC':
+ # mIRC colors are mapped as closely to the ANSI colors as
+ # possible. However, bright colors (green, blue, red,
+ # yellow) have been made their dark counterparts since
+ # ChatZilla does not properly darken mIRC colors in the
+ # Light Motif color scheme.
+ self.bold = '\x02'
+ self.green = '\x0303'
+ self.blue = '\x0302'
+ self.red = '\x0304'
+ self.red = '\x0305'
+ self.yellow = '\x0307'
+ self.brown = '\x0305'
+ self.magenta = '\x0306'
+ self.cyan = '\x0310'
+ self.reset = '\x0F'
+ if style == 'ANSI':
+ self.bold = '\x1b[1m'
+ self.green = '\x1b[1;32m'
+ self.blue = '\x1b[1;34m'
+ self.red = '\x1b[1;31m'
+ self.yellow = '\x1b[1;33m'
+ self.brown = '\x1b[33m'
+ self.magenta = '\x1b[35m'
+ self.cyan = '\x1b[36m'
+ self.reset = '\x1b[0m'
+ def load_preferences(self, conf):
+ "Load preferences from a file in the repository root."
+ if not os.path.exists(conf):
+ return
+ ln = 0
+ for line in open(conf):
+ ln += 1
+ if line.startswith("#") or not line.strip():
+ continue
+ if line.count('=') != 1:
+ sys.stderr.write('%s:%d: missing = in config line\n' \
+ % (conf, ln))
+ continue
+ fields = line.split('=')
+ if len(fields) != 2:
+ sys.stderr.write('%s:%d: too many fields in config line\n' \
+ % (conf, ln))
+ continue
+ variable = fields[0].strip()
+ value = fields[1].strip()
+ if value.lower() == "true":
+ value = True
+ elif value.lower() == "false":
+ value = False
+ # User cannot set maxchannels - only a command-line arg can do that.
+ if variable == "maxchannels":
+ return
+ setattr(self, variable, value)
+ def do_overrides(self):
+ "Make command-line overrides possible."
+ for tok in self.arguments:
+ for key in self.__dict__:
+ if tok.startswith("--" + key + "="):
+ val = tok[len(key)+3:]
+ setattr(self, key, val)
+ for (key, val) in self.__dict__.items():
+ if key in GenericExtractor.booleans:
+ if isinstance(val, str) and val.lower() == "true":
+ setattr(self, key, True)
+ elif isinstance(val, str) and val.lower() == "false":
+ setattr(self, key, False)
+ elif key in GenericExtractor.numerics:
+ setattr(self, key, int(val))
+ elif key in GenericExtractor.strings:
+ setattr(self, key, val)
+ if not self.project:
+ sys.stderr.write("irkerhook.py: no project name set!\n")
+ raise SystemExit(1)
+ if not self.repo:
+ self.repo = self.project.lower()
+ if not self.channels:
+ self.channels = default_channels % self.__dict__
+ if self.color and self.color.lower() != "none":
+ self.activate_color(self.color)
+
+def has(dirname, paths):
+ "Test for existence of a list of paths."
+ # all() is a python2.5 construct
+ for exists in [os.path.exists(os.path.join(dirname, x)) for x in paths]:
+ if not exists:
+ return False
+ return True
+
+# VCS-dependent code begins here
+
+class GitExtractor(GenericExtractor):
+ "Metadata extraction for the git version control system."
+ @staticmethod
+ def is_repository(dirname):
+ # Must detect both ordinary and bare repositories
+ return has(dirname, [".git"]) or \
+ has(dirname, ["HEAD", "refs", "objects"])
+ def __init__(self, arguments):
+ GenericExtractor.__init__(self, arguments)
+ # Get all global config variables
+ self.project = do("git config --get irker.project")
+ self.repo = do("git config --get irker.repo")
+ self.server = do("git config --get irker.server")
+ self.channels = do("git config --get irker.channels")
+ self.email = do("git config --get irker.email")
+ self.tcp = do("git config --bool --get irker.tcp")
+ self.template = do("git config --get irker.template") or u'%(bold)s%(project)s:%(reset)s %(green)s%(author)s%(reset)s %(repo)s:%(yellow)s%(branch)s%(reset)s * %(bold)s%(rev)s%(reset)s / %(bold)s%(files)s%(reset)s: %(logmsg)s %(brown)s%(url)s%(reset)s'
+ self.tinyifier = do("git config --get irker.tinyifier") or default_tinyifier
+ self.color = do("git config --get irker.color")
+ self.urlprefix = do("git config --get irker.urlprefix") or u"gitweb"
+ self.cialike = do("git config --get irker.cialike")
+ self.filtercmd = do("git config --get irker.filtercmd")
+ # These are git-specific
+ self.refname = do("git symbolic-ref HEAD 2>/dev/null")
+ self.revformat = do("git config --get irker.revformat")
+ # The project variable defaults to the name of the repository toplevel.
+ if not self.project:
+ bare = do("git config --bool --get core.bare")
+ if bare.lower() == "true":
+ keyfile = "HEAD"
+ else:
+ keyfile = ".git/HEAD"
+ here = os.getcwd()
+ while True:
+ if os.path.exists(os.path.join(here, keyfile)):
+ self.project = os.path.basename(here)
+ if self.project.endswith('.git'):
+ self.project = self.project[0:-4]
+ break
+ elif here == '/':
+ sys.stderr.write("irkerhook.py: no git repo below root!\n")
+ sys.exit(1)
+ here = os.path.dirname(here)
+ # Get overrides
+ self.do_overrides()
+ # pylint: disable=no-self-use
+ def head(self):
+ "Return a symbolic reference to the tip commit of the current branch."
+ return "HEAD"
+ def commit_factory(self, commit_id):
+ "Make a Commit object holding data for a specified commit ID."
+ commit = Commit(self, commit_id)
+ commit.branch = re.sub(r"^refs/[^/]*/", "", self.refname)
+ # Compute a description for the revision
+ if self.revformat == 'raw':
+ commit.rev = commit.commit
+ elif self.revformat == 'short':
+ commit.rev = ''
+ else: # self.revformat == 'describe'
+ commit.rev = do("git describe %s 2>/dev/null" % shellquote(commit.commit))
+ if not commit.rev:
+ # Query git for the abbreviated hash
+ commit.rev = do("git log -1 '--pretty=format:%h' " + shellquote(commit.commit))
+ if self.urlprefix in ('gitweb', 'cgit'):
+ # Also truncate the commit used for the announced urls
+ commit.commit = commit.rev
+ # Extract the meta-information for the commit
+ commit.files = do("git diff-tree -r --name-only " + shellquote(commit.commit))
+ commit.files = " ".join(commit.files.strip().split("\n")[1:])
+ # Design choice: for git we ship only the first message line, which is
+ # conventionally supposed to be a summary of the commit. Under
+ # other VCSes a different choice may be appropriate.
+ commit.author_name, commit.mail, commit.logmsg = \
+ do("git log -1 '--pretty=format:%an%n%ae%n%s' " + shellquote(commit.commit)).split("\n")
+ # This discards the part of the author's address after @.
+ # Might be be nice to ship the full email address, if not
+ # for spammers' address harvesters - getting this wrong
+ # would make the freenode #commits channel into harvester heaven.
+ commit.author = commit.mail.split("@")[0]
+ commit.author_date, commit.commit_date = \
+ do("git log -1 '--pretty=format:%ai|%ci' " + shellquote(commit.commit)).split("|")
+ return commit
+
+class SvnExtractor(GenericExtractor):
+ "Metadata extraction for the svn version control system."
+ @staticmethod
+ def is_repository(dirname):
+ return has(dirname, ["format", "hooks", "locks"])
+ def __init__(self, arguments):
+ GenericExtractor.__init__(self, arguments)
+ # Some things we need to have before metadata queries will work
+ self.repository = '.'
+ for tok in arguments:
+ if tok.startswith("--repository="):
+ self.repository = tok[13:]
+ self.project = os.path.basename(self.repository)
+ self.template = '%(bold)s%(project)s%(reset)s: %(green)s%(author)s%(reset)s %(repo)s * %(bold)s%(rev)s%(reset)s / %(bold)s%(files)s%(reset)s: %(logmsg)s %(brown)s%(url)s%(reset)s'
+ self.urlprefix = "viewcvs"
+ self.id = None
+ self.load_preferences(os.path.join(self.repository, "irker.conf"))
+ self.do_overrides()
+ # pylint: disable=no-self-use
+ def head(self):
+ sys.stderr.write("irker: under svn, hook requires a commit argument.\n")
+ raise SystemExit(1)
+ def commit_factory(self, commit_id):
+ self.id = commit_id
+ commit = Commit(self, commit_id)
+ commit.branch = ""
+ commit.rev = "r%s" % self.id
+ commit.author = self.svnlook("author")
+ commit.commit_date = self.svnlook("date").partition('(')[0]
+ commit.files = self.svnlook("dirs-changed").strip().replace("\n", " ")
+ commit.logmsg = self.svnlook("log").strip()
+ return commit
+ def svnlook(self, info):
+ return do("svnlook %s %s --revision %s" % (shellquote(info), shellquote(self.repository), shellquote(self.id)))
+
+class HgExtractor(GenericExtractor):
+ "Metadata extraction for the Mercurial version control system."
+ @staticmethod
+ def is_repository(directory):
+ return has(directory, [".hg"])
+ def __init__(self, arguments):
+ from mercurial.encoding import unifromlocal, unitolocal
+ # This fiddling with arguments is necessary since the Mercurial hook can
+ # be run in two different ways: either directly via Python (in which
+ # case hg should be pointed to the hg_hook function below) or as a
+ # script (in which case the normal __main__ block at the end of this
+ # file is exercised). In the first case, we already get repository and
+ # ui objects from Mercurial, in the second case, we have to create them
+ # from the root path.
+ self.repository = None
+ if arguments and isinstance(arguments[0], tuple):
+ # Called from hg_hook function
+ ui, self.repository = arguments[0]
+ arguments = [] # Should not be processed further by do_overrides
+ else:
+ # Called from command line: create repo/ui objects
+ from mercurial import hg, ui as uimod
+
+ repopath = b'.'
+ for tok in arguments:
+ if tok.startswith('--repository='):
+ repopath = unitolocal(tok[13:])
+ ui = uimod.ui()
+ ui.readconfig(os.path.join(repopath, b'.hg', b'hgrc'), repopath)
+ self.repository = hg.repository(ui, repopath)
+
+ GenericExtractor.__init__(self, arguments)
+ # Extract global values from the hg configuration file(s)
+ self.project = unifromlocal(ui.config(b'irker', b'project') or b'')
+ self.repo = unifromlocal(ui.config(b'irker', b'repo') or b'')
+ self.server = unifromlocal(ui.config(b'irker', b'server') or b'')
+ self.channels = unifromlocal(ui.config(b'irker', b'channels') or b'')
+ self.email = unifromlocal(ui.config(b'irker', b'email') or b'')
+ self.tcp = str(ui.configbool(b'irker', b'tcp')) # converted to bool again in do_overrides
+ self.template = unifromlocal(ui.config(b'irker', b'template') or b'')
+ if not self.template:
+ self.template = '%(bold)s%(project)s:%(reset)s %(green)s%(author)s%(reset)s %(repo)s:%(yellow)s%(branch)s%(reset)s * %(bold)s%(rev)s%(reset)s / %(bold)s%(files)s%(reset)s: %(logmsg)s %(brown)s%(url)s%(reset)s'
+ self.tinyifier = unifromlocal(ui.config(
+ b'irker', b'tinyifier',
+ default=default_tinyifier.encode('utf-8')))
+ self.color = unifromlocal(ui.config(b'irker', b'color') or b'')
+ self.urlprefix = unifromlocal(ui.config(
+ b'irker', b'urlprefix', default=ui.config(b'web', b'baseurl')))
+ if self.urlprefix:
+ # self.commit is appended to this by do_overrides
+ self.urlprefix = (
+ self.urlprefix.rstrip('/')
+ + '/%s/rev/' % unifromlocal(self.repository.root).rstrip('/'))
+ self.cialike = unifromlocal(ui.config(b'irker', b'cialike') or b'')
+ self.filtercmd = unifromlocal(ui.config(b'irker', b'filtercmd') or b'')
+ if not self.project:
+ self.project = os.path.basename(unifromlocal(self.repository.root).rstrip('/'))
+ self.do_overrides()
+ # pylint: disable=no-self-use
+ def head(self):
+ "Return a symbolic reference to the tip commit of the current branch."
+ return "-1"
+ def commit_factory(self, commit_id):
+ "Make a Commit object holding data for a specified commit ID."
+ from mercurial.node import short
+ from mercurial.templatefilters import person
+ from mercurial.encoding import unifromlocal, unitolocal
+ if isinstance(commit_id, str) and not isinstance(commit_id, bytes):
+ commit_id = unitolocal(commit_id)
+ ctx = self.repository[commit_id]
+ commit = Commit(self, unifromlocal(short(ctx.hex())))
+ # Extract commit-specific values from a "context" object
+ commit.rev = '%d:%s' % (ctx.rev(), commit.commit)
+ commit.branch = unifromlocal(ctx.branch())
+ commit.author = unifromlocal(person(ctx.user()))
+ commit.author_date = \
+ datetime.datetime.fromtimestamp(ctx.date()[0]).strftime('%Y-%m-%d %H:%M:%S')
+ commit.logmsg = unifromlocal(ctx.description())
+ # Extract changed files from status against first parent
+ st = self.repository.status(ctx.p1().node(), ctx.node())
+ commit.files = unifromlocal(b' '.join(st.modified + st.added + st.removed))
+ return commit
+
+def hg_hook(ui, repo, **kwds):
+ # To be called from a Mercurial "commit", "incoming" or "changegroup" hook.
+ # Example configuration:
+ # [hooks]
+ # incoming.irker = python:/path/to/irkerhook.py:hg_hook
+ extractor = HgExtractor([(ui, repo)])
+ start = repo[kwds['node']].rev()
+ end = len(repo)
+ if start != end:
+ # changegroup with multiple commits, so we generate a notification
+ # for each one
+ for rev in range(start, end):
+ ship(extractor, rev, False)
+ else:
+ ship(extractor, kwds['node'], False)
+
+# The files we use to identify a Subversion repo might occur as content
+# in a git or hg repo, but the special subdirectories for those are more
+# reliable indicators. So test for Subversion last.
+extractors = [GitExtractor, HgExtractor, SvnExtractor]
+
+# VCS-dependent code ends here
+
+def convert_message(message):
+ """Convert the message to bytes to send to the socket"""
+ return message.encode(locale.getlocale()[1] or 'UTF-8') + b'\n'
+
+def ship(extractor, commit, debug):
+ "Ship a notification for the specified commit."
+ metadata = extractor.commit_factory(commit)
+
+ # This is where we apply filtering
+ if extractor.filtercmd:
+ cmd = '%s %s' % (shellquote(extractor.filtercmd),
+ shellquote(json.dumps(metadata.__dict__)))
+ data = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE).stdout.read()
+ try:
+ metadata.__dict__.update(json.loads(data))
+ except ValueError:
+ sys.stderr.write("irkerhook.py: could not decode JSON: %s\n" % data)
+ raise SystemExit(1)
+
+ # Rewrite the file list if too long. The objective here is only
+ # to be easier on the eyes.
+ if extractor.cialike \
+ and extractor.cialike.lower() != "none" \
+ and len(metadata.files) > int(extractor.cialike):
+ files = metadata.files.split()
+ dirs = {d.rpartition('/')[0] for d in files}
+ if len(dirs) == 1:
+ metadata.files = "(%s files)" % (len(files),)
+ else:
+ metadata.files = "(%s files in %s dirs)" % (len(files), len(dirs))
+ # Message reduction. The assumption here is that IRC can't handle
+ # lines more than 510 characters long. If we exceed that length, we
+ # try knocking out the file list, on the theory that for notification
+ # purposes the commit text is more important. If it's still too long
+ # there's nothing much can be done other than ship it expecting the IRC
+ # server to truncate.
+ privmsg = string_type(metadata)
+ if len(privmsg) > 510:
+ metadata.files = ""
+ privmsg = string_type(metadata)
+
+ # Anti-spamming guard. It's deliberate that we get maxchannels not from
+ # the user-filtered metadata but from the extractor data - means repo
+ # administrators can lock in that setting.
+ channels = metadata.channels.split(",")
+ if extractor.maxchannels != 0:
+ channels = channels[:extractor.maxchannels]
+
+ # Ready to ship.
+ message = json.dumps({"to": channels, "privmsg": privmsg})
+ if debug:
+ print(message)
+ elif channels:
+ try:
+ if extractor.email:
+ # We can't really figure out what our SF username is without
+ # exploring our environment. The mail pipeline doesn't care
+ # about who sent the mail, other than being from sourceforge.
+ # A better way might be to simply call mail(1)
+ sender = "irker@users.sourceforge.net"
+ msg = """From: %(sender)s
+Subject: irker json
+
+%(message)s""" % {"sender":sender, "message":message}
+ import smtplib
+ smtp = smtplib.SMTP()
+ smtp.connect()
+ smtp.sendmail(sender, extractor.email, msg)
+ smtp.quit()
+ elif extractor.tcp:
+ try:
+ sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+ sock.connect((extractor.server or default_server, IRKER_PORT))
+ sock.sendall(convert_message(message))
+ finally:
+ sock.close()
+ else:
+ try:
+ sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+ sock.sendto(convert_message(message), (extractor.server or default_server, IRKER_PORT))
+ finally:
+ sock.close()
+ except socket.error as e:
+ sys.stderr.write("%s\n" % e)
+
+if __name__ == "__main__":
+ notify = True
+ repository = os.getcwd()
+ commits = []
+ for arg in sys.argv[1:]:
+ if arg == '-n':
+ notify = False
+ elif arg == '-V':
+ print("irkerhook.py: version", version)
+ sys.exit(0)
+ elif arg.startswith("--repository="):
+ repository = arg[13:]
+ elif not arg.startswith("--"):
+ commits.append(arg)
+
+ # Figure out which extractor we should be using
+ for candidate in extractors:
+ if candidate.is_repository(repository):
+ cls = candidate
+ break
+ else:
+ sys.stderr.write("irkerhook: cannot identify a repository type.\n")
+ raise SystemExit(1)
+ extractor = cls(sys.argv[1:])
+
+ # And apply it.
+ if not commits:
+ commits = [extractor.head()]
+ for commit in commits:
+ ship(extractor, commit, not notify)
+
+# The following sets edit modes for GNU EMACS
+# Local Variables:
+# mode:python
+# End: