config: explicitly track the use of the standard default value
We introduce a small object used to detect that no specific default value has
been passed to 'ui.config'. We need this explicit special value since "None" is
a valid and common default value.
The end goal here is to make progress on a centralised and explicit declaration
of the available config option. A first good usecase for this are "default"
value. Before starting looking further down this alley we needs to rework the
handling of default value in the 'ui' object to have all configxyz methods going
through the same logic. This is the first changeset on this trek.
#!/usr/bin/env python
"""This does HTTP GET requests given a host:port and path and returns
a subset of the headers plus the body of the result."""
from __future__ import absolute_import, print_function
import json
import os
import sys
from mercurial import (
util,
)
httplib = util.httplib
try:
import msvcrt
msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
msvcrt.setmode(sys.stderr.fileno(), os.O_BINARY)
except ImportError:
pass
twice = False
if '--twice' in sys.argv:
sys.argv.remove('--twice')
twice = True
headeronly = False
if '--headeronly' in sys.argv:
sys.argv.remove('--headeronly')
headeronly = True
formatjson = False
if '--json' in sys.argv:
sys.argv.remove('--json')
formatjson = True
hgproto = None
if '--hgproto' in sys.argv:
idx = sys.argv.index('--hgproto')
hgproto = sys.argv[idx + 1]
sys.argv.pop(idx)
sys.argv.pop(idx)
tag = None
def request(host, path, show):
assert not path.startswith('/'), path
global tag
headers = {}
if tag:
headers['If-None-Match'] = tag
if hgproto:
headers['X-HgProto-1'] = hgproto
conn = httplib.HTTPConnection(host)
conn.request("GET", '/' + path, None, headers)
response = conn.getresponse()
print(response.status, response.reason)
if show[:1] == ['-']:
show = sorted(h for h, v in response.getheaders()
if h.lower() not in show)
for h in [h.lower() for h in show]:
if response.getheader(h, None) is not None:
print("%s: %s" % (h, response.getheader(h)))
if not headeronly:
print()
data = response.read()
# Pretty print JSON. This also has the beneficial side-effect
# of verifying emitted JSON is well-formed.
if formatjson:
# json.dumps() will print trailing newlines. Eliminate them
# to make tests easier to write.
data = json.loads(data)
lines = json.dumps(data, sort_keys=True, indent=2).splitlines()
for line in lines:
print(line.rstrip())
else:
sys.stdout.write(data)
if twice and response.getheader('ETag', None):
tag = response.getheader('ETag')
return response.status
status = request(sys.argv[1], sys.argv[2], sys.argv[3:])
if twice:
status = request(sys.argv[1], sys.argv[2], sys.argv[3:])
if 200 <= status <= 305:
sys.exit(0)
sys.exit(1)