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
|
#!/usr/bin/env python
#
# scons-diff.py - diff-like utility for comparing SCons trees
#
# This supports most common diff options (with some quirks, like you can't
# just say -c and have it use a default value), but canonicalizes the
# various version strings within the file like __revision__, __build__,
# etc. so that you can diff trees without having to ignore changes in
# version lines.
#
from __future__ import print_function
import difflib
import getopt
import os.path
import re
import sys
Usage = """\
Usage: scons-diff.py [OPTIONS] dir1 dir2
Options:
-c NUM, --context=NUM Print NUM lines of copied context.
-h, --help Print this message and exit.
-n Don't canonicalize SCons lines.
-q, --quiet Print only whether files differ.
-r, --recursive Recursively compare found subdirectories.
-s Report when two files are the same.
-u NUM, --unified=NUM Print NUM lines of unified context.
"""
opts, args = getopt.getopt(sys.argv[1:],
'c:dhnqrsu:',
['context=', 'help', 'recursive', 'unified='])
diff_type = None
edit_type = None
context = 2
recursive = False
report_same = False
diff_options = []
def diff_line(left, right):
if diff_options:
opts = ' ' + ' '.join(diff_options)
else:
opts = ''
print('diff%s %s %s' % (opts, left, right))
for o, a in opts:
if o in ('-c', '-u'):
diff_type = o
context = int(a)
diff_options.append(o)
elif o in ('-h', '--help'):
print(Usage)
sys.exit(0)
elif o == '-n':
diff_options.append(o)
edit_type = o
elif o == '-q':
diff_type = o
diff_line = lambda l, r: None
elif o in ('-r', '--recursive'):
recursive = True
diff_options.append(o)
elif o == '-s':
report_same = True
try:
left, right = args
except ValueError:
sys.stderr.write(Usage)
sys.exit(1)
def quiet_diff(a, b, fromfile='', tofile='',
fromfiledate='', tofiledate='', n=3, lineterm='\n'):
"""
A function with the same calling signature as difflib.context_diff
(diff -c) and difflib.unified_diff (diff -u) but which prints
output like the simple, unadorned 'diff" command.
"""
if a == b:
return []
else:
return ['Files %s and %s differ\n' % (fromfile, tofile)]
def simple_diff(a, b, fromfile='', tofile='',
fromfiledate='', tofiledate='', n=3, lineterm='\n'):
"""
A function with the same calling signature as difflib.context_diff
(diff -c) and difflib.unified_diff (diff -u) but which prints
output like the simple, unadorned 'diff" command.
"""
sm = difflib.SequenceMatcher(None, a, b)
def comma(x1, x2):
return x1+1 == x2 and str(x2) or '%s,%s' % (x1+1, x2)
result = []
for op, a1, a2, b1, b2 in sm.get_opcodes():
if op == 'delete':
result.append("%sd%d\n" % (comma(a1, a2), b1))
result.extend(['< ' + l for l in a[a1:a2]])
elif op == 'insert':
result.append("%da%s\n" % (a1, comma(b1, b2)))
result.extend(['> ' + l for l in b[b1:b2]])
elif op == 'replace':
result.append("%sc%s\n" % (comma(a1, a2), comma(b1, b2)))
result.extend(['< ' + l for l in a[a1:a2]])
result.append('---\n')
result.extend(['> ' + l for l in b[b1:b2]])
return result
diff_map = {
'-c' : difflib.context_diff,
'-q' : quiet_diff,
'-u' : difflib.unified_diff,
}
diff_function = diff_map.get(diff_type, simple_diff)
baseline_re = re.compile('(# |@REM )/home/\S+/baseline/')
comment_rev_re = re.compile('(# |@REM )(\S+) 0.96.[CD]\d+ \S+ \S+( knight)')
revision_re = re.compile('__revision__ = "[^"]*"')
build_re = re.compile('__build__ = "[^"]*"')
date_re = re.compile('__date__ = "[^"]*"')
def lines_read(file):
return open(file).readlines()
def lines_massage(file):
text = open(file).read()
text = baseline_re.sub('\\1', text)
text = comment_rev_re.sub('\\1\\2\\3', text)
text = revision_re.sub('__revision__ = "__FILE__"', text)
text = build_re.sub('__build__ = "0.96.92.DXXX"', text)
text = date_re.sub('__date__ = "2006/08/25 02:59:00"', text)
return text.splitlines(1)
lines_map = {
'-n' : lines_read,
}
lines_function = lines_map.get(edit_type, lines_massage)
def do_diff(left, right, diff_subdirs):
if os.path.isfile(left) and os.path.isfile(right):
diff_file(left, right)
elif not os.path.isdir(left):
diff_file(left, os.path.join(right, os.path.split(left)[1]))
elif not os.path.isdir(right):
diff_file(os.path.join(left, os.path.split(right)[1]), right)
elif diff_subdirs:
diff_dir(left, right)
def diff_file(left, right):
l = lines_function(left)
r = lines_function(right)
d = diff_function(l, r, left, right, context)
try:
text = ''.join(d)
except IndexError:
sys.stderr.write('IndexError diffing %s and %s\n' % (left, right))
else:
if text:
diff_line(left, right)
print(text)
elif report_same:
print('Files %s and %s are identical' % (left, right))
def diff_dir(left, right):
llist = os.listdir(left)
rlist = os.listdir(right)
u = {}
for l in llist:
u[l] = 1
for r in rlist:
u[r] = 1
for x in sorted([ x for x in list(u.keys()) if x[-4:] != '.pyc' ]):
if x in llist:
if x in rlist:
do_diff(os.path.join(left, x),
os.path.join(right, x),
recursive)
else:
print('Only in %s: %s' % (left, x))
else:
print('Only in %s: %s' % (right, x))
do_diff(left, right, True)
# Local Variables:
# tab-width:4
# indent-tabs-mode:nil
# End:
# vim: set expandtab tabstop=4 shiftwidth=4:
|
