Mercurial > hg
view mercurial/urllibcompat.py @ 39641:aa7e312375cf
wireprotov2: let clients drive delta behavior
Previously, the "manifestdata" and "filedata" commands assumed the
receiver had all parent revisions for requested nodes. Unless the
revision had no parents, they emitted a delta instead of a fulltext.
This strategy isn't appropriate for shallow clones and for clients
that only want to access fulltext revision data for a single node
without fetching their parent revisions.
This commit adds an "haveparents" argument to the "manifestdata"
and "filedata" commands that controls delta generation behavior.
Unless "haveparents" is set, the server assumes that the client
doesn't have parent revisions unless they were previously sent
as part of the current group of revisions.
This change allows the fulltext revision data of any individual
revision to be obtained. This will facilitate shallow clones
and other data retrieval strategies that don't require all previous
revisions of an entity to be fetched.
Differential Revision: https://phab.mercurial-scm.org/D4492
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Thu, 30 Aug 2018 14:55:34 -0700 |
parents | 5bc7ff103081 |
children | 5774fc623a18 |
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# urllibcompat.py - adapters to ease using urllib2 on Py2 and urllib on Py3 # # Copyright 2017 Google, Inc. # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from __future__ import absolute_import from . import pycompat _sysstr = pycompat.sysstr class _pycompatstub(object): def __init__(self): self._aliases = {} def _registeraliases(self, origin, items): """Add items that will be populated at the first access""" items = map(_sysstr, items) self._aliases.update( (item.replace(r'_', r'').lower(), (origin, item)) for item in items) def _registeralias(self, origin, attr, name): """Alias ``origin``.``attr`` as ``name``""" self._aliases[_sysstr(name)] = (origin, _sysstr(attr)) def __getattr__(self, name): try: origin, item = self._aliases[name] except KeyError: raise AttributeError(name) self.__dict__[name] = obj = getattr(origin, item) return obj httpserver = _pycompatstub() urlreq = _pycompatstub() urlerr = _pycompatstub() if pycompat.ispy3: import urllib.parse urlreq._registeraliases(urllib.parse, ( "splitattr", "splitpasswd", "splitport", "splituser", "urlparse", "urlunparse", )) urlreq._registeralias(urllib.parse, "parse_qs", "parseqs") urlreq._registeralias(urllib.parse, "parse_qsl", "parseqsl") urlreq._registeralias(urllib.parse, "unquote_to_bytes", "unquote") import urllib.request urlreq._registeraliases(urllib.request, ( "AbstractHTTPHandler", "BaseHandler", "build_opener", "FileHandler", "FTPHandler", "ftpwrapper", "HTTPHandler", "HTTPSHandler", "install_opener", "pathname2url", "HTTPBasicAuthHandler", "HTTPDigestAuthHandler", "HTTPPasswordMgrWithDefaultRealm", "ProxyHandler", "Request", "url2pathname", "urlopen", )) import urllib.response urlreq._registeraliases(urllib.response, ( "addclosehook", "addinfourl", )) import urllib.error urlerr._registeraliases(urllib.error, ( "HTTPError", "URLError", )) import http.server httpserver._registeraliases(http.server, ( "HTTPServer", "BaseHTTPRequestHandler", "SimpleHTTPRequestHandler", "CGIHTTPRequestHandler", )) # urllib.parse.quote() accepts both str and bytes, decodes bytes # (if necessary), and returns str. This is wonky. We provide a custom # implementation that only accepts bytes and emits bytes. def quote(s, safe=r'/'): s = urllib.parse.quote_from_bytes(s, safe=safe) return s.encode('ascii', 'strict') # urllib.parse.urlencode() returns str. We use this function to make # sure we return bytes. def urlencode(query, doseq=False): s = urllib.parse.urlencode(query, doseq=doseq) return s.encode('ascii') urlreq.quote = quote urlreq.urlencode = urlencode def getfullurl(req): return req.full_url def gethost(req): return req.host def getselector(req): return req.selector def getdata(req): return req.data def hasdata(req): return req.data is not None else: import BaseHTTPServer import CGIHTTPServer import SimpleHTTPServer import urllib2 import urllib import urlparse urlreq._registeraliases(urllib, ( "addclosehook", "addinfourl", "ftpwrapper", "pathname2url", "quote", "splitattr", "splitpasswd", "splitport", "splituser", "unquote", "url2pathname", "urlencode", )) urlreq._registeraliases(urllib2, ( "AbstractHTTPHandler", "BaseHandler", "build_opener", "FileHandler", "FTPHandler", "HTTPBasicAuthHandler", "HTTPDigestAuthHandler", "HTTPHandler", "HTTPPasswordMgrWithDefaultRealm", "HTTPSHandler", "install_opener", "ProxyHandler", "Request", "urlopen", )) urlreq._registeraliases(urlparse, ( "urlparse", "urlunparse", )) urlreq._registeralias(urlparse, "parse_qs", "parseqs") urlreq._registeralias(urlparse, "parse_qsl", "parseqsl") urlerr._registeraliases(urllib2, ( "HTTPError", "URLError", )) httpserver._registeraliases(BaseHTTPServer, ( "HTTPServer", "BaseHTTPRequestHandler", )) httpserver._registeraliases(SimpleHTTPServer, ( "SimpleHTTPRequestHandler", )) httpserver._registeraliases(CGIHTTPServer, ( "CGIHTTPRequestHandler", )) def gethost(req): return req.get_host() def getselector(req): return req.get_selector() def getfullurl(req): return req.get_full_url() def getdata(req): return req.get_data() def hasdata(req): return req.has_data()