author | Matt Mackall <mpm@selenic.com> |
Thu, 07 May 2009 19:39:45 -0500 | |
changeset 8315 | c8493310ad9b |
parent 8253 | e553fe565c61 |
child 8873 | e872ef2e6758 |
permissions | -rw-r--r-- |
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# win32text.py - LF <-> CRLF/CR translation utilities for Windows/Mac users |
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# |
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# Copyright 2005, 2007-2009 Matt Mackall <mpm@selenic.com> and others |
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# |
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# This software may be used and distributed according to the terms of the |
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# GNU General Public License version 2, incorporated herein by reference. |
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# |
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# To perform automatic newline conversion, use: |
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# |
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# [extensions] |
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# hgext.win32text = |
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# [encode] |
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# ** = cleverencode: |
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# # or ** = macencode: |
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# [decode] |
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# ** = cleverdecode: |
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# # or ** = macdecode: |
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# |
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# If not doing conversion, to make sure you do not commit CRLF/CR by |
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# accident: |
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# |
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# [hooks] |
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# pretxncommit.crlf = python:hgext.win32text.forbidcrlf |
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# # or pretxncommit.cr = python:hgext.win32text.forbidcr |
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# |
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# To do the same check on a server to prevent CRLF/CR from being |
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# pushed or pulled: |
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# |
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# [hooks] |
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# pretxnchangegroup.crlf = python:hgext.win32text.forbidcrlf |
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# # or pretxnchangegroup.cr = python:hgext.win32text.forbidcr |
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from mercurial.i18n import _ |
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from mercurial.node import short |
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from mercurial import util |
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import re |
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# regexp for single LF without CR preceding. |
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re_single_lf = re.compile('(^|[^\r])\n', re.MULTILINE) |
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newlinestr = {'\r\n': 'CRLF', '\r': 'CR'} |
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filterstr = {'\r\n': 'clever', '\r': 'mac'} |
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def checknewline(s, newline, ui=None, repo=None, filename=None): |
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# warn if already has 'newline' in repository. |
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# it might cause unexpected eol conversion. |
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# see issue 302: |
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# http://www.selenic.com/mercurial/bts/issue302 |
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if newline in s and ui and filename and repo: |
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ui.warn(_('WARNING: %s already has %s line endings\n' |
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'and does not need EOL conversion by the win32text plugin.\n' |
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'Before your next commit, please reconsider your ' |
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'encode/decode settings in \nMercurial.ini or %s.\n') % |
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(filename, newlinestr[newline], repo.join('hgrc'))) |
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def dumbdecode(s, cmd, **kwargs): |
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checknewline(s, '\r\n', **kwargs) |
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# replace single LF to CRLF |
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return re_single_lf.sub('\\1\r\n', s) |
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def dumbencode(s, cmd): |
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return s.replace('\r\n', '\n') |
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def macdumbdecode(s, cmd, **kwargs): |
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checknewline(s, '\r', **kwargs) |
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return s.replace('\n', '\r') |
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def macdumbencode(s, cmd): |
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return s.replace('\r', '\n') |
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def cleverdecode(s, cmd, **kwargs): |
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if not util.binary(s): |
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return dumbdecode(s, cmd, **kwargs) |
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return s |
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def cleverencode(s, cmd): |
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if not util.binary(s): |
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return dumbencode(s, cmd) |
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return s |
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def macdecode(s, cmd, **kwargs): |
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if not util.binary(s): |
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return macdumbdecode(s, cmd, **kwargs) |
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return s |
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def macencode(s, cmd): |
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if not util.binary(s): |
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return macdumbencode(s, cmd) |
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return s |
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_filters = { |
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'dumbdecode:': dumbdecode, |
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'dumbencode:': dumbencode, |
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'cleverdecode:': cleverdecode, |
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'cleverencode:': cleverencode, |
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'macdumbdecode:': macdumbdecode, |
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'macdumbencode:': macdumbencode, |
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'macdecode:': macdecode, |
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'macencode:': macencode, |
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} |
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def forbidnewline(ui, repo, hooktype, node, newline, **kwargs): |
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halt = False |
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seen = set() |
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# we try to walk changesets in reverse order from newest to |
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# oldest, so that if we see a file multiple times, we take the |
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# newest version as canonical. this prevents us from blocking a |
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# changegroup that contains an unacceptable commit followed later |
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# by a commit that fixes the problem. |
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tip = repo['tip'] |
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for rev in xrange(len(repo)-1, repo[node].rev()-1, -1): |
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use repo[changeid] to get a changectx
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112 |
c = repo[rev] |
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113 |
for f in c.files(): |
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114 |
if f in seen or f not in tip or f not in c: |
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115 |
continue |
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seen.add(f) |
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data = c[f].data() |
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118 |
if not util.binary(data) and newline in data: |
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119 |
if not halt: |
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ui.warn(_('Attempt to commit or push text file(s) ' |
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121 |
'using %s line endings\n') % |
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122 |
newlinestr[newline]) |
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123 |
ui.warn(_('in %s: %s\n') % (short(c.node()), f)) |
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124 |
halt = True |
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125 |
if halt and hooktype == 'pretxnchangegroup': |
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126 |
crlf = newlinestr[newline].lower() |
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127 |
filter = filterstr[newline] |
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128 |
ui.warn(_('\nTo prevent this mistake in your local repository,\n' |
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129 |
'add to Mercurial.ini or .hg/hgrc:\n' |
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130 |
'\n' |
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131 |
'[hooks]\n' |
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132 |
'pretxncommit.%s = python:hgext.win32text.forbid%s\n' |
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133 |
'\n' |
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134 |
'and also consider adding:\n' |
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135 |
'\n' |
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136 |
'[extensions]\n' |
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137 |
'hgext.win32text =\n' |
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138 |
'[encode]\n' |
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139 |
'** = %sencode:\n' |
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140 |
'[decode]\n' |
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141 |
'** = %sdecode:\n') % (crlf, crlf, filter, filter)) |
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142 |
return halt |
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143 |
|
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144 |
def forbidcrlf(ui, repo, hooktype, node, **kwargs): |
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145 |
return forbidnewline(ui, repo, hooktype, node, '\r\n', **kwargs) |
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146 |
|
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147 |
def forbidcr(ui, repo, hooktype, node, **kwargs): |
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148 |
return forbidnewline(ui, repo, hooktype, node, '\r', **kwargs) |
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149 |
|
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150 |
def reposetup(ui, repo): |
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151 |
if not repo.local(): |
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152 |
return |
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153 |
for name, fn in _filters.iteritems(): |
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154 |
repo.adddatafilter(name, fn) |
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|
155 |