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annotate Tools/scripts/findnocoding.py @ 58689:514b56efd89a 3.1

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Merged revisions 77962 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/py3k ................ r77962 | r.david.murray | 2010-02-04 11:41:57 -0500 (Thu, 04 Feb 2010) | 17 lines Merged revisions 77943,77959-77960 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r77943 | r.david.murray | 2010-02-03 08:36:23 -0500 (Wed, 03 Feb 2010) | 2 lines Explicitly mention the default value for formatdate's usegmt parameter. ........ r77959 | nick.coghlan | 2010-02-04 07:43:58 -0500 (Thu, 04 Feb 2010) | 1 line Issue 6760: Clarify args handling for subprocess.Popen. Patch by Chris Rebert ........ r77960 | r.david.murray | 2010-02-04 11:33:31 -0500 (Thu, 04 Feb 2010) | 2 lines Add Chris Rebert to ACKS for issue 6760 Popen doc improvements. ........ ................
author R. David Murray <rdmurray@bitdance.com>
date Thu, 04 Feb 2010 16:44:31 +0000
parents bd0e9a9cd283
children fcfe324663a6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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7caabc749975 Patch [ 784089 ] A program to scan python files and list those require coding
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1 #!/usr/bin/env python
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2
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3 """List all those Python files that require a coding directive
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4
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5 Usage: nocoding.py dir1 [dir2...]
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6 """
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7
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8 __author__ = "Oleg Broytmann, Georg Brandl"
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9
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10 import sys, os, re, getopt
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11
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12 # our pysource module finds Python source files
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13 try:
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14 import pysource
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15 except ImportError:
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16 # emulate the module with a simple os.walk
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17 class pysource:
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18 has_python_ext = looks_like_python = can_be_compiled = None
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19 def walk_python_files(self, paths, *args, **kwargs):
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20 for path in paths:
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21 if os.path.isfile(path):
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22 yield path.endswith(".py")
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23 elif os.path.isdir(path):
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24 for root, dirs, files in os.walk(path):
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25 for filename in files:
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26 if filename.endswith(".py"):
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27 yield os.path.join(root, filename)
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28 pysource = pysource()
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29
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30
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31 print("The pysource module is not available; "
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32 "no sophisticated Python source file search will be done.", file=sys.stderr)
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34
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35 decl_re = re.compile(r"coding[=:]\s*([-\w.]+)")
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36
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37 def get_declaration(line):
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38 match = decl_re.search(line)
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39 if match:
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40 return match.group(1)
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41 return ''
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42
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43 def has_correct_encoding(text, codec):
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44 try:
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45 str(text, codec)
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46 except UnicodeDecodeError:
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47 return False
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48 else:
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49 return True
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50
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51 def needs_declaration(fullpath):
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52 try:
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53 infile = open(fullpath, 'rU')
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54 except IOError: # Oops, the file was removed - ignore it
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55 return None
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56
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57 line1 = infile.readline()
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58 line2 = infile.readline()
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59
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60 if get_declaration(line1) or get_declaration(line2):
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61 # the file does have an encoding declaration, so trust it
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62 infile.close()
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63 return False
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64
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65 # check the whole file for non utf-8 characters
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66 rest = infile.read()
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67 infile.close()
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68
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69 if has_correct_encoding(line1+line2+rest, "utf-8"):
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70 return False
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71
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72 return True
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73
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74
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75 usage = """Usage: %s [-cd] paths...
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76 -c: recognize Python source files trying to compile them
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77 -d: debug output""" % sys.argv[0]
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78
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79 try:
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80 opts, args = getopt.getopt(sys.argv[1:], 'cd')
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81 except getopt.error as msg:
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82 print(msg, file=sys.stderr)
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83 print(usage, file=sys.stderr)
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84 sys.exit(1)
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85
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86 is_python = pysource.looks_like_python
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87 debug = False
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88
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89 for o, a in opts:
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90 if o == '-c':
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91 is_python = pysource.can_be_compiled
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92 elif o == '-d':
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93 debug = True
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94
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95 if not args:
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96 print(usage, file=sys.stderr)
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97 sys.exit(1)
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98
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99 for fullpath in pysource.walk_python_files(args, is_python):
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100 if debug:
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101 print("Testing for coding: %s" % fullpath)
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102 result = needs_declaration(fullpath)
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103 if result:
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104 print(fullpath)