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
|
#!/usr/bin/env python3
"""List all those Python files that require a coding directive
Usage: nocoding.py dir1 [dir2...]
"""
__author__ = "Oleg Broytmann, Georg Brandl"
import sys, os, re, getopt
# our pysource module finds Python source files
try:
import pysource
except ImportError:
# emulate the module with a simple os.walk
class pysource:
has_python_ext = looks_like_python = can_be_compiled = None
def walk_python_files(self, paths, *args, **kwargs):
for path in paths:
if os.path.isfile(path):
yield path.endswith(".py")
elif os.path.isdir(path):
for root, dirs, files in os.walk(path):
for filename in files:
if filename.endswith(".py"):
yield os.path.join(root, filename)
pysource = pysource()
print("The pysource module is not available; "
"no sophisticated Python source file search will be done.", file=sys.stderr)
decl_re = re.compile(r"coding[=:]\s*([-\w.]+)")
def get_declaration(line):
match = decl_re.search(line)
if match:
return match.group(1)
return ''
def has_correct_encoding(text, codec):
try:
str(text, codec)
except UnicodeDecodeError:
return False
else:
return True
def needs_declaration(fullpath):
try:
infile = open(fullpath, 'rU')
except IOError: # Oops, the file was removed - ignore it
return None
line1 = infile.readline()
line2 = infile.readline()
if get_declaration(line1) or get_declaration(line2):
# the file does have an encoding declaration, so trust it
infile.close()
return False
# check the whole file for non utf-8 characters
rest = infile.read()
infile.close()
if has_correct_encoding(line1+line2+rest, "utf-8"):
return False
return True
usage = """Usage: %s [-cd] paths...
-c: recognize Python source files trying to compile them
-d: debug output""" % sys.argv[0]
if __name__ == '__main__':
try:
opts, args = getopt.getopt(sys.argv[1:], 'cd')
except getopt.error as msg:
print(msg, file=sys.stderr)
print(usage, file=sys.stderr)
sys.exit(1)
is_python = pysource.looks_like_python
debug = False
for o, a in opts:
if o == '-c':
is_python = pysource.can_be_compiled
elif o == '-d':
debug = True
if not args:
print(usage, file=sys.stderr)
sys.exit(1)
for fullpath in pysource.walk_python_files(args, is_python):
if debug:
print("Testing for coding: %s" % fullpath)
result = needs_declaration(fullpath)
if result:
print(fullpath)
|
