templates: add filter to reverse list
The filter supports only lists because for lists, it’s straightforward to
implement. Reversing text doesn’t seem very useful and is hard to implement.
Reversing the bytes would break multi-bytes encodings. Reversing the code
points would break characters consisting of multiple code points. Reversing
graphemes is non-trivial without using a library not included in the standard
library.
#!/usr/bin/env python
"""
Small and dumb HTTP server for use in tests.
"""
import optparse
import os
import signal
import socket
import sys
from mercurial import (
encoding,
pycompat,
server,
util,
)
httpserver = util.httpserver
OptionParser = optparse.OptionParser
if os.environ.get('HGIPV6', '0') == '1':
class simplehttpserver(httpserver.httpserver):
address_family = socket.AF_INET6
else:
simplehttpserver = httpserver.httpserver
class _httprequesthandler(httpserver.simplehttprequesthandler):
def log_message(self, format, *args):
httpserver.simplehttprequesthandler.log_message(self, format, *args)
sys.stderr.flush()
class simplehttpservice:
def __init__(self, host, port):
self.address = (host, port)
def init(self):
self.httpd = simplehttpserver(self.address, _httprequesthandler)
def run(self):
self.httpd.serve_forever()
if __name__ == '__main__':
parser = OptionParser()
parser.add_option(
'-p',
'--port',
dest='port',
type='int',
default=8000,
help='TCP port to listen on',
metavar='PORT',
)
parser.add_option(
'-H',
'--host',
dest='host',
default='localhost',
help='hostname or IP to listen on',
metavar='HOST',
)
parser.add_option('--logfile', help='file name of access/error log')
parser.add_option(
'--pid',
dest='pid',
help='file name where the PID of the server is stored',
)
parser.add_option(
'-f',
'--foreground',
dest='foreground',
action='store_true',
help='do not start the HTTP server in the background',
)
parser.add_option('--daemon-postexec', action='append')
(options, args) = parser.parse_args()
signal.signal(signal.SIGTERM, lambda x, y: sys.exit(0))
if options.foreground and options.logfile:
parser.error(
"options --logfile and --foreground are mutually " "exclusive"
)
if options.foreground and options.pid:
parser.error("options --pid and --foreground are mutually exclusive")
opts = {
b'pid_file': options.pid,
b'daemon': not options.foreground,
b'daemon_postexec': pycompat.rapply(
encoding.strtolocal, options.daemon_postexec
),
}
service = simplehttpservice(options.host, options.port)
runargs = [sys.executable, __file__] + sys.argv[1:]
runargs = [pycompat.fsencode(a) for a in runargs]
server.runservice(
opts,
initfn=service.init,
runfn=service.run,
logfile=options.logfile,
runargs=runargs,
)