Mercurial > hg
view mercurial/hgweb/request.py @ 6945:2cfdabe235fb
hgweb: return content iterator instead of using write() callable
This is a new version of 4879468fa28f (which was backed out in 943f066c0d58),
with an extra line removed to fix problems with hg serve. hg's internal web
server contains checking if the app isn't trying to write more bytes than
specified by the Content-Length header. The first try still contained an old
line that wrote the response, so the response was sent twice.
author | Dirkjan Ochtman <dirkjan@ochtman.nl> |
---|---|
date | Sat, 30 Aug 2008 17:13:23 +0200 |
parents | 0dbb56e90a71 |
children | a42d27bc809d |
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# hgweb/request.py - An http request from either CGI or the standalone server. # # Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net> # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com> # # This software may be used and distributed according to the terms # of the GNU General Public License, incorporated herein by reference. import socket, cgi, errno from common import ErrorResponse, statusmessage shortcuts = { 'cl': [('cmd', ['changelog']), ('rev', None)], 'sl': [('cmd', ['shortlog']), ('rev', None)], 'cs': [('cmd', ['changeset']), ('node', None)], 'f': [('cmd', ['file']), ('filenode', None)], 'fl': [('cmd', ['filelog']), ('filenode', None)], 'fd': [('cmd', ['filediff']), ('node', None)], 'fa': [('cmd', ['annotate']), ('filenode', None)], 'mf': [('cmd', ['manifest']), ('manifest', None)], 'ca': [('cmd', ['archive']), ('node', None)], 'tags': [('cmd', ['tags'])], 'tip': [('cmd', ['changeset']), ('node', ['tip'])], 'static': [('cmd', ['static']), ('file', None)] } def expand(form): for k in shortcuts.iterkeys(): if k in form: for name, value in shortcuts[k]: if value is None: value = form[k] form[name] = value del form[k] return form class wsgirequest(object): def __init__(self, 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.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 = expand(cgi.parse(self.inp, self.env, keep_blank_values=1)) self._start_response = start_response self.server_write = None self.headers = [] def __iter__(self): return iter([]) def read(self, count=-1): return self.inp.read(count) def respond(self, status, type=None, filename=None, length=0): if self._start_response is not None: self.httphdr(type, filename, length) if not self.headers: raise RuntimeError("request.write called before headers sent") for k, v in self.headers: if not isinstance(v, str): raise TypeError('header value must be string: %r' % v) if isinstance(status, ErrorResponse): status = statusmessage(status.code) elif status == 200: status = '200 Script output follows' elif isinstance(status, int): status = statusmessage(status) self.server_write = self._start_response(status, self.headers) self._start_response = None self.headers = [] def write(self, thing): if hasattr(thing, "__iter__"): for part in thing: self.write(part) else: thing = str(thing) try: self.server_write(thing) except socket.error, inst: if inst[0] != errno.ECONNRESET: raise def writelines(self, lines): for line in lines: self.write(line) def flush(self): return None def close(self): return None def header(self, headers=[('Content-Type','text/html')]): self.headers.extend(headers) def httphdr(self, type=None, filename=None, length=0, headers={}): headers = headers.items() if type is not None: headers.append(('Content-Type', type)) if filename: filename = (filename.split('/')[-1] .replace('\\', '\\\\').replace('"', '\\"')) headers.append(('Content-Disposition', 'inline; filename="%s"' % filename)) if length: headers.append(('Content-Length', str(length))) self.header(headers) def wsgiapplication(app_maker): '''For compatibility with old CGI scripts. A plain hgweb() or hgwebdir() can and should now be used as a WSGI application.''' application = app_maker() def run_wsgi(env, respond): return application(env, respond) return run_wsgi