/usr/lib/python2.7/dist-packages/bzrlib/plugins/bzrtools/colordiff.py is in bzrtools 2.6.0-1.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 | # Copyright (C) 2006 Aaron Bentley
# <aaron@aaronbentley.com>
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import re
import sys
from os.path import expanduser
from bzrlib import patiencediff, trace
from bzrlib.commands import get_cmd_object
from bzrlib.patches import (hunk_from_header, InsertLine, RemoveLine,
ContextLine, Hunk, HunkLine)
import terminal
class LineParser(object):
def parse_line(self, line):
if line.startswith("@"):
return hunk_from_header(line)
elif line.startswith("+"):
return InsertLine(line[1:])
elif line.startswith("-"):
return RemoveLine(line[1:])
elif line.startswith(" "):
return ContextLine(line[1:])
else:
return line
class DiffWriter(object):
def __init__(self, target, check_style=False, color='always'):
self.target = target
self.lp = LineParser()
self.chunks = []
from terminal import has_ansi_colors
if 'always' == color or ('auto' == color and has_ansi_colors()):
self.colors = {
'metaline': 'darkyellow',
'plain': 'darkwhite',
'newtext': 'darkblue',
'oldtext': 'darkred',
'diffstuff': 'darkgreen',
'trailingspace': 'yellow',
'leadingtabs': 'magenta',
'longline': 'cyan',
}
self._read_colordiffrc('/etc/colordiffrc')
self._read_colordiffrc(expanduser('~/.colordiffrc'))
else:
self.colors = {
'metaline': None,
'plain': None,
'newtext': None,
'oldtext': None,
'diffstuff': None,
'trailingspace': None,
'leadingtabs': None,
'longline': None,
}
self.added_leading_tabs = 0
self.added_trailing_whitespace = 0
self.spurious_whitespace = 0
self.long_lines = 0
self.max_line_len = 79
self._new_lines = []
self._old_lines = []
self.check_style = check_style
def _read_colordiffrc(self, path):
try:
f = open(path, 'r')
except IOError:
return
for line in f.readlines():
try:
key, val = line.split('=')
except ValueError:
continue
key = key.strip()
val = val.strip()
tmp = val
if val.startswith('dark'):
tmp = val[4:]
if tmp not in terminal.colors:
continue
self.colors[key] = val
def colorstring(self, type, item, bad_ws_match):
color = self.colors[type]
if color is not None:
if self.check_style and bad_ws_match:
#highlight were needed
item.contents = ''.join(terminal.colorstring(txt, color, bcol)
for txt, bcol in (
(bad_ws_match.group(1).expandtabs(),
self.colors['leadingtabs']),
(bad_ws_match.group(2)[0:self.max_line_len], None),
(bad_ws_match.group(2)[self.max_line_len:],
self.colors['longline']),
(bad_ws_match.group(3), self.colors['trailingspace'])
)) + bad_ws_match.group(4)
string = terminal.colorstring(str(item), color)
else:
string = str(item)
self.target.write(string)
def write(self, text):
newstuff = text.split('\n')
for newchunk in newstuff[:-1]:
self._writeline(''.join(self.chunks + [newchunk, '\n']))
self.chunks = []
self.chunks = [newstuff[-1]]
def writelines(self, lines):
for line in lines:
self.write(line)
def _writeline(self, line):
item = self.lp.parse_line(line)
bad_ws_match = None
if isinstance(item, Hunk):
line_class = 'diffstuff'
self._analyse_old_new()
elif isinstance(item, HunkLine):
bad_ws_match = re.match(r'^([\t]*)(.*?)([\t ]*)(\r?\n)$',
item.contents)
has_leading_tabs = bool(bad_ws_match.group(1))
has_trailing_whitespace = bool(bad_ws_match.group(3))
if isinstance(item, InsertLine):
if has_leading_tabs:
self.added_leading_tabs += 1
if has_trailing_whitespace:
self.added_trailing_whitespace += 1
if (len(bad_ws_match.group(2)) > self.max_line_len and
not item.contents.startswith('++ ')):
self.long_lines += 1
line_class = 'newtext'
self._new_lines.append(item)
elif isinstance(item, RemoveLine):
line_class = 'oldtext'
self._old_lines.append(item)
else:
line_class = 'plain'
elif isinstance(item, basestring) and item.startswith('==='):
line_class = 'metaline'
self._analyse_old_new()
else:
line_class = 'plain'
self._analyse_old_new()
self.colorstring(line_class, item, bad_ws_match)
def flush(self):
self.target.flush()
@staticmethod
def _matched_lines(old, new):
matcher = patiencediff.PatienceSequenceMatcher(None, old, new)
matched_lines = sum (n for i, j, n in matcher.get_matching_blocks())
return matched_lines
def _analyse_old_new(self):
if (self._old_lines, self._new_lines) == ([], []):
return
if not self.check_style:
return
old = [l.contents for l in self._old_lines]
new = [l.contents for l in self._new_lines]
ws_matched = self._matched_lines(old, new)
old = [l.rstrip() for l in old]
new = [l.rstrip() for l in new]
no_ws_matched = self._matched_lines(old, new)
assert no_ws_matched >= ws_matched
if no_ws_matched > ws_matched:
self.spurious_whitespace += no_ws_matched - ws_matched
self.target.write('^ Spurious whitespace change above.\n')
self._old_lines, self._new_lines = ([], [])
def auto_diff_writer(output):
return DiffWriter(output, color='auto')
def colordiff(color, check_style, *args, **kwargs):
real_stdout = sys.stdout
dw = DiffWriter(real_stdout, check_style, color)
sys.stdout = dw
try:
get_cmd_object('diff').run(*args, **kwargs)
finally:
sys.stdout = real_stdout
if check_style:
if dw.added_leading_tabs > 0:
trace.warning('%d new line(s) have leading tabs.' %
dw.added_leading_tabs)
if dw.added_trailing_whitespace > 0:
trace.warning('%d new line(s) have trailing whitespace.' %
dw.added_trailing_whitespace)
if dw.long_lines > 0:
trace.warning('%d new line(s) exceed(s) %d columns.' %
(dw.long_lines, dw.max_line_len))
if dw.spurious_whitespace > 0:
trace.warning('%d line(s) have spurious whitespace changes' %
dw.spurious_whitespace)
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