Mercurial > hg
view mercurial/hgweb/wsgicgi.py @ 47387:75e1104f23a2
revlog: use dedicated code for reading sidedata
We are about to introduce a new, dedicated, file to store sidedata. Before doing so, we make sidedata reading go through different code as reading data chunk. This will simplify some of the complexity of the next changesets.
The reading is very simple right now and will need some improvement later to
reuse some of the caching strategy we use for the data file.
Differential Revision: https://phab.mercurial-scm.org/D10785
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Thu, 27 May 2021 04:09:30 +0200 |
parents | 56483ab91e66 |
children | 6000f5b25c9b |
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# hgweb/wsgicgi.py - CGI->WSGI translator # # Copyright 2006 Eric Hopper <hopper@omnifarious.org> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. # # This was originally copied from the public domain code at # http://www.python.org/dev/peps/pep-0333/#the-server-gateway-side from __future__ import absolute_import import os from ..pycompat import getattr from .. import pycompat from ..utils import procutil from . import common def launch(application): procutil.setbinary(procutil.stdin) procutil.setbinary(procutil.stdout) environ = dict(pycompat.iteritems(os.environ)) # re-exports environ.setdefault('PATH_INFO', '') if environ.get('SERVER_SOFTWARE', '').startswith('Microsoft-IIS'): # IIS includes script_name in PATH_INFO scriptname = environ['SCRIPT_NAME'] if environ['PATH_INFO'].startswith(scriptname): environ['PATH_INFO'] = environ['PATH_INFO'][len(scriptname) :] stdin = procutil.stdin if environ.get('HTTP_EXPECT', '').lower() == '100-continue': stdin = common.continuereader(stdin, procutil.stdout.write) environ['wsgi.input'] = stdin environ['wsgi.errors'] = procutil.stderr environ['wsgi.version'] = (1, 0) environ['wsgi.multithread'] = False environ['wsgi.multiprocess'] = True environ['wsgi.run_once'] = True if environ.get('HTTPS', 'off').lower() in ('on', '1', 'yes'): environ['wsgi.url_scheme'] = 'https' else: environ['wsgi.url_scheme'] = 'http' headers_set = [] headers_sent = [] out = procutil.stdout def write(data): if not headers_set: raise AssertionError(b"write() before start_response()") elif not headers_sent: # Before the first output, send the stored headers status, response_headers = headers_sent[:] = headers_set out.write(b'Status: %s\r\n' % pycompat.bytesurl(status)) for hk, hv in response_headers: out.write( b'%s: %s\r\n' % (pycompat.bytesurl(hk), pycompat.bytesurl(hv)) ) out.write(b'\r\n') out.write(data) out.flush() def start_response(status, response_headers, exc_info=None): if exc_info: try: if headers_sent: # Re-raise original exception if headers sent raise exc_info[0](exc_info[1], exc_info[2]) finally: del exc_info # avoid dangling circular ref elif headers_set: raise AssertionError(b"Headers already set!") headers_set[:] = [status, response_headers] return write content = application(environ, start_response) try: for chunk in content: write(chunk) if not headers_sent: write(b'') # send headers now if body was empty finally: getattr(content, 'close', lambda: None)()