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# hgweb/request.py - An http request from either CGI or the standalone server.
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#
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# Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
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# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms
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# of the GNU General Public License, incorporated herein by reference.
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import socket, cgi, errno
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from mercurial.i18n import gettext as _
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from common import ErrorResponse, statusmessage
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class wsgirequest(object):
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def __init__(self, wsgienv, start_response):
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version = wsgienv['wsgi.version']
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if (version < (1, 0)) or (version >= (2, 0)):
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raise RuntimeError("Unknown and unsupported WSGI version %d.%d"
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% version)
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self.inp = wsgienv['wsgi.input']
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self.server_write = None
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self.err = wsgienv['wsgi.errors']
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self.threaded = wsgienv['wsgi.multithread']
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self.multiprocess = wsgienv['wsgi.multiprocess']
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self.run_once = wsgienv['wsgi.run_once']
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self.env = wsgienv
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self.form = cgi.parse(self.inp, self.env, keep_blank_values=1)
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self._start_response = start_response
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self.headers = []
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def __iter__(self):
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return iter([])
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def read(self, count=-1):
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return self.inp.read(count)
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def start_response(self, status):
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if self._start_response is not None:
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if not self.headers:
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raise RuntimeError("request.write called before headers sent")
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for k, v in self.headers:
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if not isinstance(v, str):
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raise TypeError('header value must be string: %r' % v)
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if isinstance(status, ErrorResponse):
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status = statusmessage(status.code)
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elif isinstance(status, int):
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status = statusmessage(status)
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self.server_write = self._start_response(status, self.headers)
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self._start_response = None
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self.headers = []
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def respond(self, status, *things):
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if not things:
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self.start_response(status)
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for thing in things:
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if hasattr(thing, "__iter__"):
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for part in thing:
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self.respond(status, part)
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else:
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thing = str(thing)
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self.start_response(status)
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try:
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self.server_write(thing)
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except socket.error, inst:
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if inst[0] != errno.ECONNRESET:
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raise
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def write(self, *things):
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self.respond('200 Script output follows', *things)
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def writelines(self, lines):
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for line in lines:
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self.write(line)
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def flush(self):
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return None
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def close(self):
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return None
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def header(self, headers=[('Content-Type','text/html')]):
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self.headers.extend(headers)
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def httphdr(self, type, filename=None, length=0, headers={}):
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headers = headers.items()
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headers.append(('Content-Type', type))
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if filename:
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headers.append(('Content-Disposition', 'inline; filename=%s' %
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filename))
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if length:
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headers.append(('Content-Length', str(length)))
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self.header(headers)
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def wsgiapplication(app_maker):
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'''For compatibility with old CGI scripts. A plain hgweb() or hgwebdir()
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can and should now be used as a WSGI application.'''
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application = app_maker()
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def run_wsgi(env, respond):
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return application(env, respond)
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return run_wsgi
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