view mercurial/hgweb/request.py @ 5045:f191bc3916f7

merge: do early copy to deal with issue636 Without copies/renames, merges source names are 1:1 with their targets. Copies and renames introduce the possibility that there will be two merges with the same input but different output. By doing the copy to the destination name before the merge, the actual merge becomes 1:1 again, and no source is the input to two different merges. - add a preliminary scan to applyupdates to do copies - for the merge action, pass the old name (for finding ancestors) and the new name (for input to the merge) to filemerge - eliminate the old post-merge copy - lookup file contents from new name in filemerge - pass new name to external merge helper - report merge failure at new name - add a test
author Matt Mackall <mpm@selenic.com>
date Wed, 01 Aug 2007 12:33:12 -0500
parents ff7253a0d1da
children
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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 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 _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.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)

    out = property(lambda self: 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 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, 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)