view mercurial/hgweb/request.py @ 3612:d1b16a746db6

Add allowed bundle types as argument to hgweb unbundle capability.

Arguments to capabilities were added before the 0.9.1 release, so there
are no compatibility issues. Mercurial 0.9 didn't support http push.

Using HG10GZ, HG10BZ and HG10UN has the advantage that new bundle types can
be added later and the client doesn't have to try sending them first and
reacting on errors sent by the server.

# hgweb/request.py - An http request from either CGI or the standalone server.
#
# Copyright 21 May 2005 - (c) 2005 Jake Edge <[e-mail]>
# Copyright 2005, 2006 Matt Mackall <[e-mail]>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.

from mercurial.demandload import demandload
demandload(globals(), "socket sys cgi os errno")
from mercurial.i18n import gettext as _

class wsgiapplication(object):
    def __init__(self, destmaker):
        self.destmaker = destmaker

    def __call__(self, wsgienv, start_response):
        return _wsgirequest(self.destmaker(), wsgienv, start_response)

class _wsgioutputfile(object):
    def __init__(self, request):
        self.request = request

    def write(self, data):
        self.request.write(data)
    def writelines(self, lines):
        for line in lines:
            self.write(line)
    def flush(self):
        return None
    def close(self):
        return None

class _wsgirequest(object):
    def __init__(self, destination, wsgienv, start_response):
        version = wsgienv['wsgi.version']
        if (version < (1,0)) or (version >= (2, 0)):
            raise RuntimeError("Unknown and unsupported WSGI version %d.%d" \
                               % version)
        self.inp = wsgienv['wsgi.input']
        self.out = _wsgioutputfile(self)
        self.server_write = None
        self.err = wsgienv['wsgi.errors']
        self.threaded = wsgienv['wsgi.multithread']
        self.multiprocess = wsgienv['wsgi.multiprocess']
        self.run_once = wsgienv['wsgi.run_once']
        self.env = wsgienv
        self.form = cgi.parse(self.inp, self.env, keep_blank_values=1)
        self.start_response = start_response
        self.headers = []
        destination.run_wsgi(self)

    def __iter__(self):
        return iter([])

    def read(self, count=-1):
        return self.inp.read(count)

    def write(self, *things):
        for thing in things:
            if hasattr(thing, "__iter__"):
                for part in thing:
                    self.write(part)
            else:
                thing = str(thing)
                if self.server_write is None:
                    if not self.headers:
                        raise RuntimeError("request.write called before headers sent (%s)." % thing)
                    self.server_write = self.start_response('200 Script output follows',
                                                            self.headers)
                    self.start_response = None
                    self.headers = None
                try:
                    self.server_write(thing)
                except socket.error, inst:
                    if inst[0] != errno.ECONNRESET:
                        raise

    def header(self, headers=[('Content-type','text/html')]):
        self.headers.extend(headers)

    def httphdr(self, type, filename=None, length=0, headers={}):
        headers = headers.items()
        headers.append(('Content-type', type))
        if filename:
            headers.append(('Content-disposition', 'attachment; filename=%s' %
                            filename))
        if length:
            headers.append(('Content-length', str(length)))
        self.header(headers)