tests/get-with-headers.py

debugindex etc.: add --changelog and --manifest options

These open the changelog and manifest, respectively, directly so you don't
need to specify the path.

The options have been added to debugindex, debugdata and debugrevlog.

The patch also fixes some minor usage-related bugs.

#!/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."""

import httplib, sys

try:
    import msvcrt, os
    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

reasons = {'Not modified': 'Not Modified'} # python 2.4

tag = None
def request(host, path, show):

    global tag
    headers = {}
    if tag:
        headers['If-None-Match'] = tag

    conn = httplib.HTTPConnection(host)
    conn.request("GET", path, None, headers)
    response = conn.getresponse()
    print response.status, reasons.get(response.reason, response.reason)
    for h in [h.lower() for h in show]:
        if response.getheader(h, None) is not None:
            print "%s: %s" % (h, response.getheader(h))

    print
    data = response.read()
    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)