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authorNishanth Amuluru2011-01-11 22:41:51 +0530
committerNishanth Amuluru2011-01-11 22:41:51 +0530
commitb03203c8cb991c16ac8a3d74c8c4078182d0bb48 (patch)
tree7cf13b2deacbfaaec99edb431b83ddd5ea734a52 /eggs/mercurial-1.7.3-py2.6-linux-x86_64.egg/hgext/win32text.py
parent0c50203cd9eb94b819883c3110922e873f003138 (diff)
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-# win32text.py - LF <-> CRLF/CR translation utilities for Windows/Mac users
-#
-# Copyright 2005, 2007-2009 Matt Mackall <mpm@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
-
- 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
-'''
-
-from mercurial.i18n import _
-from mercurial.node import short
-from mercurial import util
-import re
-
-# regexp for single LF without CR preceding.
-re_single_lf = re.compile('(^|[^\r])\n', re.MULTILINE)
-
-newlinestr = {'\r\n': 'CRLF', '\r': 'CR'}
-filterstr = {'\r\n': 'clever', '\r': '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:
- # http://mercurial.selenic.com/bts/issue302
- if newline in s and ui and filename and repo:
- ui.warn(_('WARNING: %s already has %s line endings\n'
- 'and does not need EOL conversion by the win32text plugin.\n'
- 'Before your next commit, please reconsider your '
- 'encode/decode settings in \nMercurial.ini or %s.\n') %
- (filename, newlinestr[newline], repo.join('hgrc')))
-
-def dumbdecode(s, cmd, **kwargs):
- checknewline(s, '\r\n', **kwargs)
- # replace single LF to CRLF
- return re_single_lf.sub('\\1\r\n', s)
-
-def dumbencode(s, cmd):
- return s.replace('\r\n', '\n')
-
-def macdumbdecode(s, cmd, **kwargs):
- checknewline(s, '\r', **kwargs)
- return s.replace('\n', '\r')
-
-def macdumbencode(s, cmd):
- return s.replace('\r', '\n')
-
-def cleverdecode(s, cmd, **kwargs):
- if not util.binary(s):
- return dumbdecode(s, cmd, **kwargs)
- return s
-
-def cleverencode(s, cmd):
- if not util.binary(s):
- return dumbencode(s, cmd)
- return s
-
-def macdecode(s, cmd, **kwargs):
- if not util.binary(s):
- return macdumbdecode(s, cmd, **kwargs)
- return s
-
-def macencode(s, cmd):
- if not util.binary(s):
- return macdumbencode(s, cmd)
- return s
-
-_filters = {
- 'dumbdecode:': dumbdecode,
- 'dumbencode:': dumbencode,
- 'cleverdecode:': cleverdecode,
- 'cleverencode:': cleverencode,
- 'macdumbdecode:': macdumbdecode,
- 'macdumbencode:': macdumbencode,
- 'macdecode:': macdecode,
- '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['tip']
- for rev in xrange(len(repo)-1, 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 util.binary(data) and newline in data:
- if not halt:
- ui.warn(_('Attempt to commit or push text file(s) '
- 'using %s line endings\n') %
- newlinestr[newline])
- ui.warn(_('in %s: %s\n') % (short(c.node()), f))
- halt = True
- if halt and hooktype == 'pretxnchangegroup':
- crlf = newlinestr[newline].lower()
- filter = filterstr[newline]
- ui.warn(_('\nTo prevent this mistake in your local repository,\n'
- 'add to Mercurial.ini or .hg/hgrc:\n'
- '\n'
- '[hooks]\n'
- 'pretxncommit.%s = python:hgext.win32text.forbid%s\n'
- '\n'
- 'and also consider adding:\n'
- '\n'
- '[extensions]\n'
- 'win32text =\n'
- '[encode]\n'
- '** = %sencode:\n'
- '[decode]\n'
- '** = %sdecode:\n') % (crlf, crlf, filter, filter))
- return halt
-
-def forbidcrlf(ui, repo, hooktype, node, **kwargs):
- return forbidnewline(ui, repo, hooktype, node, '\r\n', **kwargs)
-
-def forbidcr(ui, repo, hooktype, node, **kwargs):
- return forbidnewline(ui, repo, hooktype, node, '\r', **kwargs)
-
-def reposetup(ui, repo):
- if not repo.local():
- return
- for name, fn in _filters.iteritems():
- repo.adddatafilter(name, fn)
-
-def extsetup(ui):
- if ui.configbool('win32text', 'warn', True):
- ui.warn(_("win32text is deprecated: "
- "http://mercurial.selenic.com/wiki/Win32TextExtension\n"))