Mercurial > hg
view hgext/win32text.py @ 49680:40e24d82b513
delta-find: make sure we only use newer full snapshot as candidate
The current code does not needs to protect against this, as there are no older
snapshot in the current cache. However as we are getting ready to reuse this
cache from one revision to another, we need the code to protect itself about
what's coming.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Sun, 06 Nov 2022 17:55:55 -0500 |
parents | d44e3c45f0e4 |
children | c166b212bdee |
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# win32text.py - LF <-> CRLF/CR translation utilities for Windows/Mac users # # Copyright 2005, 2007-2009 Olivia Mackall <olivia@selenic.com> and others # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. '''perform automatic newline conversion (DEPRECATED) Deprecation: The win32text extension requires each user to configure the extension again and again for each clone since the configuration is not copied when cloning. We have therefore made the ``eol`` as an alternative. The ``eol`` uses a version controlled file for its configuration and each clone will therefore use the right settings from the start. To perform automatic newline conversion, use:: [extensions] win32text = [encode] ** = cleverencode: # or ** = macencode: [decode] ** = cleverdecode: # or ** = macdecode: If not doing conversion, to make sure you do not commit CRLF/CR by accident:: [hooks] pretxncommit.crlf = python:hgext.win32text.forbidcrlf # or pretxncommit.cr = python:hgext.win32text.forbidcr To do the same check on a server to prevent CRLF/CR from being pushed or pulled:: [hooks] pretxnchangegroup.crlf = python:hgext.win32text.forbidcrlf # or pretxnchangegroup.cr = python:hgext.win32text.forbidcr ''' import re from mercurial.i18n import _ from mercurial.node import short from mercurial import ( cmdutil, extensions, registrar, ) from mercurial.utils import stringutil # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should # be specifying the version(s) of Mercurial they are tested with, or # leave the attribute unspecified. testedwith = b'ships-with-hg-core' configtable = {} configitem = registrar.configitem(configtable) configitem( b'win32text', b'warn', default=True, ) # regexp for single LF without CR preceding. re_single_lf = re.compile(b'(^|[^\r])\n', re.MULTILINE) newlinestr = {b'\r\n': b'CRLF', b'\r': b'CR'} filterstr = {b'\r\n': b'clever', b'\r': b'mac'} def checknewline(s, newline, ui=None, repo=None, filename=None): # warn if already has 'newline' in repository. # it might cause unexpected eol conversion. # see issue 302: # https://bz.mercurial-scm.org/302 if newline in s and ui and filename and repo: ui.warn( _( b'WARNING: %s already has %s line endings\n' b'and does not need EOL conversion by the win32text plugin.\n' b'Before your next commit, please reconsider your ' b'encode/decode settings in \nMercurial.ini or %s.\n' ) % (filename, newlinestr[newline], repo.vfs.join(b'hgrc')) ) def dumbdecode(s, cmd, **kwargs): checknewline(s, b'\r\n', **kwargs) # replace single LF to CRLF return re_single_lf.sub(b'\\1\r\n', s) def dumbencode(s, cmd): return s.replace(b'\r\n', b'\n') def macdumbdecode(s, cmd, **kwargs): checknewline(s, b'\r', **kwargs) return s.replace(b'\n', b'\r') def macdumbencode(s, cmd): return s.replace(b'\r', b'\n') def cleverdecode(s, cmd, **kwargs): if not stringutil.binary(s): return dumbdecode(s, cmd, **kwargs) return s def cleverencode(s, cmd): if not stringutil.binary(s): return dumbencode(s, cmd) return s def macdecode(s, cmd, **kwargs): if not stringutil.binary(s): return macdumbdecode(s, cmd, **kwargs) return s def macencode(s, cmd): if not stringutil.binary(s): return macdumbencode(s, cmd) return s _filters = { b'dumbdecode:': dumbdecode, b'dumbencode:': dumbencode, b'cleverdecode:': cleverdecode, b'cleverencode:': cleverencode, b'macdumbdecode:': macdumbdecode, b'macdumbencode:': macdumbencode, b'macdecode:': macdecode, b'macencode:': macencode, } def forbidnewline(ui, repo, hooktype, node, newline, **kwargs): halt = False seen = set() # we try to walk changesets in reverse order from newest to # oldest, so that if we see a file multiple times, we take the # newest version as canonical. this prevents us from blocking a # changegroup that contains an unacceptable commit followed later # by a commit that fixes the problem. tip = repo[b'tip'] for rev in range(repo.changelog.tiprev(), repo[node].rev() - 1, -1): c = repo[rev] for f in c.files(): if f in seen or f not in tip or f not in c: continue seen.add(f) data = c[f].data() if not stringutil.binary(data) and newline in data: if not halt: ui.warn( _( b'attempt to commit or push text file(s) ' b'using %s line endings\n' ) % newlinestr[newline] ) ui.warn(_(b'in %s: %s\n') % (short(c.node()), f)) halt = True if halt and hooktype == b'pretxnchangegroup': crlf = newlinestr[newline].lower() filter = filterstr[newline] ui.warn( _( b'\nTo prevent this mistake in your local repository,\n' b'add to Mercurial.ini or .hg/hgrc:\n' b'\n' b'[hooks]\n' b'pretxncommit.%s = python:hgext.win32text.forbid%s\n' b'\n' b'and also consider adding:\n' b'\n' b'[extensions]\n' b'win32text =\n' b'[encode]\n' b'** = %sencode:\n' b'[decode]\n' b'** = %sdecode:\n' ) % (crlf, crlf, filter, filter) ) return halt def forbidcrlf(ui, repo, hooktype, node, **kwargs): return forbidnewline(ui, repo, hooktype, node, b'\r\n', **kwargs) def forbidcr(ui, repo, hooktype, node, **kwargs): return forbidnewline(ui, repo, hooktype, node, b'\r', **kwargs) def reposetup(ui, repo): if not repo.local(): return for name, fn in _filters.items(): repo.adddatafilter(name, fn) def wrap_revert(orig, repo, ctx, names, uipathfn, actions, *args, **kwargs): # reset dirstate cache for file we touch ds = repo.dirstate with ds.parentchange(): for filename in actions[b'revert'][0]: entry = ds.get_entry(filename) if entry is not None: if entry.p1_tracked: ds.update_file( filename, entry.tracked, p1_tracked=True, p2_info=entry.p2_info, ) return orig(repo, ctx, names, uipathfn, actions, *args, **kwargs) def extsetup(ui): # deprecated config: win32text.warn if ui.configbool(b'win32text', b'warn'): ui.warn( _( b"win32text is deprecated: " b"https://mercurial-scm.org/wiki/Win32TextExtension\n" ) ) extensions.wrapfunction(cmdutil, '_performrevert', wrap_revert)