ref: e0c19ae048ae671883fd4d27d5f617c02020bdf5
dir: /sys/src/cmd/hg/mercurial/hgweb/wsgicgi.py/
# hgweb/wsgicgi.py - CGI->WSGI translator # # Copyright 2006 Eric Hopper <[email protected]> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2, incorporated herein by reference. # # This was originally copied from the public domain code at # http://www.python.org/dev/peps/pep-0333/#the-server-gateway-side import os, sys from mercurial import util def launch(application): util.set_binary(sys.stdin) util.set_binary(sys.stdout) environ = dict(os.environ.iteritems()) environ.setdefault('PATH_INFO', '') if '.cgi' in environ['PATH_INFO']: environ['PATH_INFO'] = environ['PATH_INFO'].split('.cgi', 1)[1] environ['wsgi.input'] = sys.stdin environ['wsgi.errors'] = sys.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 = sys.stdout def write(data): if not headers_set: raise AssertionError("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('Status: %s\r\n' % status) for header in response_headers: out.write('%s: %s\r\n' % header) out.write('\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: exc_info = None # avoid dangling circular ref elif headers_set: raise AssertionError("Headers already set!") headers_set[:] = [status, response_headers] return write content = application(environ, start_response) for chunk in content: write(chunk)