/usr/share/pyshared/bzrlib/cmdline.py is in python-bzrlib 2.5.0-2ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 | # Copyright (C) 2010-2011 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
"""Unicode-compatible command-line splitter for all platforms.
The user-visible behaviour of this module is described in
configuring_bazaar.txt.
"""
from __future__ import absolute_import
import re
_whitespace_match = re.compile(u'\s', re.UNICODE).match
class _PushbackSequence(object):
def __init__(self, orig):
self._iter = iter(orig)
self._pushback_buffer = []
def next(self):
if len(self._pushback_buffer) > 0:
return self._pushback_buffer.pop()
else:
return self._iter.next()
def pushback(self, char):
self._pushback_buffer.append(char)
def __iter__(self):
return self
class _Whitespace(object):
def process(self, next_char, context):
if _whitespace_match(next_char):
if len(context.token) > 0:
return None
else:
return self
elif next_char in context.allowed_quote_chars:
context.quoted = True
return _Quotes(next_char, self)
elif next_char == u'\\':
return _Backslash(self)
else:
context.token.append(next_char)
return _Word()
class _Quotes(object):
def __init__(self, quote_char, exit_state):
self.quote_char = quote_char
self.exit_state = exit_state
def process(self, next_char, context):
if next_char == u'\\':
return _Backslash(self)
elif next_char == self.quote_char:
return self.exit_state
else:
context.token.append(next_char)
return self
class _Backslash(object):
# See http://msdn.microsoft.com/en-us/library/bb776391(VS.85).aspx
def __init__(self, exit_state):
self.exit_state = exit_state
self.count = 1
def process(self, next_char, context):
if next_char == u'\\':
self.count += 1
return self
elif next_char in context.allowed_quote_chars:
# 2N backslashes followed by a quote are N backslashes
context.token.append(u'\\' * (self.count/2))
# 2N+1 backslashes follwed by a quote are N backslashes followed by
# the quote which should not be processed as the start or end of
# the quoted arg
if self.count % 2 == 1:
# odd number of \ escapes the quote
context.token.append(next_char)
else:
# let exit_state handle next_char
context.seq.pushback(next_char)
self.count = 0
return self.exit_state
else:
# N backslashes not followed by a quote are just N backslashes
if self.count > 0:
context.token.append(u'\\' * self.count)
self.count = 0
# let exit_state handle next_char
context.seq.pushback(next_char)
return self.exit_state
def finish(self, context):
if self.count > 0:
context.token.append(u'\\' * self.count)
class _Word(object):
def process(self, next_char, context):
if _whitespace_match(next_char):
return None
elif next_char in context.allowed_quote_chars:
return _Quotes(next_char, self)
elif next_char == u'\\':
return _Backslash(self)
else:
context.token.append(next_char)
return self
class Splitter(object):
def __init__(self, command_line, single_quotes_allowed):
self.seq = _PushbackSequence(command_line)
self.allowed_quote_chars = u'"'
if single_quotes_allowed:
self.allowed_quote_chars += u"'"
def __iter__(self):
return self
def next(self):
quoted, token = self._get_token()
if token is None:
raise StopIteration
return quoted, token
def _get_token(self):
self.quoted = False
self.token = []
state = _Whitespace()
for next_char in self.seq:
state = state.process(next_char, self)
if state is None:
break
if not state is None and not getattr(state, 'finish', None) is None:
state.finish(self)
result = u''.join(self.token)
if not self.quoted and result == '':
result = None
return self.quoted, result
def split(unsplit, single_quotes_allowed=True):
splitter = Splitter(unsplit, single_quotes_allowed=single_quotes_allowed)
return [arg for quoted, arg in splitter]
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