Mercurial > hg
view mercurial/httpconnection.py @ 47123:d8ac62374943
dirstate-tree: Make `DirstateMap` borrow from a bytes buffer
… that has the contents of the `.hg/dirstate` file.
This only applies to the tree-based flavor of `DirstateMap`.
For now only the entire `&[u8]` slice is stored, so this is not useful yet.
Adding a lifetime parameter to the `DirstateMap` struct (in hg-core) makes
Python bindings non-trivial because we keep that struct in a Python object
that has a dynamic lifetime tied to Python’s reference-counting and GC.
As long as we keep the `PyBytes` that owns the borrowed bytes buffer next to
the borrowing struct, the buffer will live long enough for the borrows to stay
valid. However this relationship cannot be expressed in safe Rust code in a
way that would statisfy they borrow-checker. We use `unsafe` code to erase
that lifetime parameter, and encapsulate it in a safe abstraction similar to
the owning-ref crate: https://docs.rs/owning_ref/
Differential Revision: https://phab.mercurial-scm.org/D10557
author | Simon Sapin <simon.sapin@octobus.net> |
---|---|
date | Fri, 30 Apr 2021 18:24:54 +0200 |
parents | ffd3e823a7e5 |
children | 6000f5b25c9b |
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# httpconnection.py - urllib2 handler for new http support # # Copyright 2005, 2006, 2007, 2008 Olivia Mackall <olivia@selenic.com> # Copyright 2006, 2007 Alexis S. L. Carvalho <alexis@cecm.usp.br> # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com> # Copyright 2011 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 import os from .i18n import _ from .pycompat import open from . import ( pycompat, util, ) from .utils import ( urlutil, ) urlerr = util.urlerr urlreq = util.urlreq # moved here from url.py to avoid a cycle class httpsendfile(object): """This is a wrapper around the objects returned by python's "open". Its purpose is to send file-like objects via HTTP. It do however not define a __len__ attribute because the length might be more than Py_ssize_t can handle. """ def __init__(self, ui, *args, **kwargs): self.ui = ui self._data = open(*args, **kwargs) self.seek = self._data.seek self.close = self._data.close self.write = self._data.write self.length = os.fstat(self._data.fileno()).st_size self._pos = 0 self._progress = self._makeprogress() def _makeprogress(self): # We pass double the max for total because we currently have # to send the bundle twice in the case of a server that # requires authentication. Since we can't know until we try # once whether authentication will be required, just lie to # the user and maybe the push succeeds suddenly at 50%. return self.ui.makeprogress( _(b'sending'), unit=_(b'kb'), total=(self.length // 1024 * 2) ) def read(self, *args, **kwargs): ret = self._data.read(*args, **kwargs) if not ret: self._progress.complete() return ret self._pos += len(ret) self._progress.update(self._pos // 1024) return ret def __enter__(self): return self def __exit__(self, exc_type, exc_val, exc_tb): self.close() # moved here from url.py to avoid a cycle def readauthforuri(ui, uri, user): uri = pycompat.bytesurl(uri) # Read configuration groups = {} for key, val in ui.configitems(b'auth'): if key in (b'cookiefile',): continue if b'.' not in key: ui.warn(_(b"ignoring invalid [auth] key '%s'\n") % key) continue group, setting = key.rsplit(b'.', 1) gdict = groups.setdefault(group, {}) if setting in (b'username', b'cert', b'key'): val = util.expandpath(val) gdict[setting] = val # Find the best match scheme, hostpath = uri.split(b'://', 1) bestuser = None bestlen = 0 bestauth = None for group, auth in pycompat.iteritems(groups): if user and user != auth.get(b'username', user): # If a username was set in the URI, the entry username # must either match it or be unset continue prefix = auth.get(b'prefix') if not prefix: continue prefixurl = urlutil.url(prefix) if prefixurl.user and prefixurl.user != user: # If a username was set in the prefix, it must match the username in # the URI. continue # The URI passed in has been stripped of credentials, so erase the user # here to allow simpler matching. prefixurl.user = None prefix = bytes(prefixurl) p = prefix.split(b'://', 1) if len(p) > 1: schemes, prefix = [p[0]], p[1] else: schemes = (auth.get(b'schemes') or b'https').split() if ( (prefix == b'*' or hostpath.startswith(prefix)) and ( len(prefix) > bestlen or ( len(prefix) == bestlen and not bestuser and b'username' in auth ) ) and scheme in schemes ): bestlen = len(prefix) bestauth = group, auth bestuser = auth.get(b'username') if user and not bestuser: auth[b'username'] = user return bestauth