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
|
# 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):
colors = {
'metaline': 'darkyellow',
'plain': 'darkwhite',
'newtext': 'darkblue',
'oldtext': 'darkred',
'diffstuff': 'darkgreen',
'trailingspace': 'yellow',
'leadingtabs': 'magenta',
'longline': 'cyan',
}
def __init__(self, target, check_style):
self.target = target
self.lp = LineParser()
self.chunks = []
self._read_colordiffrc()
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 = expanduser('~/.colordiffrc')
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 _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 colordiff(check_style, *args, **kwargs):
real_stdout = sys.stdout
dw = DiffWriter(real_stdout, check_style)
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)
|