Mercurial > hg
view mercurial/scmwindows.py @ 47349:7138c863d0a1
dirstate-v2: Skip readdir in status based on directory mtime
When calling `read_dir` during `status` and the directory is found to be
eligible for caching (see code comments), write the directory’s mtime to the
dirstate. The presence of a directory mtime in the dirstate is meaningful
and indicates eligibility.
When an eligible directory mtime is found in the dirstate and `stat()` shows
that the mtime has not changed, `status` can skip calling `read_dir` again
and instead rely on the names of child nodes in the dirstate tree.
The `tempfile` crate is used to create a temporary file in order to use its
modification time as "current time" with the same truncation as other files
and directories would have in their own modification time.
Differential Revision: https://phab.mercurial-scm.org/D10826
author | Simon Sapin <simon.sapin@octobus.net> |
---|---|
date | Fri, 28 May 2021 11:48:59 +0200 |
parents | 224af78021de |
children | 6000f5b25c9b |
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from __future__ import absolute_import import os from . import ( encoding, pycompat, util, win32, ) try: import _winreg as winreg # pytype: disable=import-error winreg.CloseKey except ImportError: # py2 only import winreg # pytype: disable=import-error # MS-DOS 'more' is the only pager available by default on Windows. fallbackpager = b'more' def systemrcpath(): '''return default os-specific hgrc search path''' rcpath = [] filename = win32.executablepath() # Use mercurial.ini found in directory with hg.exe progrc = os.path.join(os.path.dirname(filename), b'mercurial.ini') rcpath.append(progrc) def _processdir(progrcd): if os.path.isdir(progrcd): for f, kind in sorted(util.listdir(progrcd)): if f.endswith(b'.rc'): rcpath.append(os.path.join(progrcd, f)) # Use hgrc.d found in directory with hg.exe _processdir(os.path.join(os.path.dirname(filename), b'hgrc.d')) # treat a PROGRAMDATA directory as equivalent to /etc/mercurial programdata = encoding.environ.get(b'PROGRAMDATA') if programdata: programdata = os.path.join(programdata, b'Mercurial') _processdir(os.path.join(programdata, b'hgrc.d')) ini = os.path.join(programdata, b'mercurial.ini') if os.path.isfile(ini): rcpath.append(ini) ini = os.path.join(programdata, b'hgrc') if os.path.isfile(ini): rcpath.append(ini) # next look for a system rcpath in the registry value = util.lookupreg( b'SOFTWARE\\Mercurial', None, winreg.HKEY_LOCAL_MACHINE ) if value and isinstance(value, bytes): value = util.localpath(value) for p in value.split(pycompat.ospathsep): if p.lower().endswith(b'mercurial.ini'): rcpath.append(p) else: _processdir(p) return rcpath def userrcpath(): '''return os-specific hgrc search path to the user dir''' home = _legacy_expanduser(b'~') path = [os.path.join(home, b'mercurial.ini'), os.path.join(home, b'.hgrc')] userprofile = encoding.environ.get(b'USERPROFILE') if userprofile and userprofile != home: path.append(os.path.join(userprofile, b'mercurial.ini')) path.append(os.path.join(userprofile, b'.hgrc')) return path def _legacy_expanduser(path): """Expand ~ and ~user constructs in the pre 3.8 style""" # Python 3.8+ changed the expansion of '~' from HOME to USERPROFILE. See # https://bugs.python.org/issue36264. It also seems to capitalize the drive # letter, as though it was processed through os.path.realpath(). if not path.startswith(b'~'): return path i, n = 1, len(path) while i < n and path[i] not in b'\\/': i += 1 if b'HOME' in encoding.environ: userhome = encoding.environ[b'HOME'] elif b'USERPROFILE' in encoding.environ: userhome = encoding.environ[b'USERPROFILE'] elif b'HOMEPATH' not in encoding.environ: return path else: try: drive = encoding.environ[b'HOMEDRIVE'] except KeyError: drive = b'' userhome = os.path.join(drive, encoding.environ[b'HOMEPATH']) if i != 1: # ~user userhome = os.path.join(os.path.dirname(userhome), path[1:i]) return userhome + path[i:] def termsize(ui): return win32.termsize()