Mercurial > cpython-lru_cache-weakref

annotate Tools/scripts/pathfix.py @ 74006:88198b93ff2f

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Issue #13560: Add PyUnicode_EncodeLocale() * Use PyUnicode_EncodeLocale() in time.strftime() if wcsftime() is not available * Document my last changes in Misc/NEWS
author Victor Stinner <victor.stinner@haypocalc.com>
date Sat, 17 Dec 2011 04:13:41 +0100
parents e3e6aa633f33
children c57d99a8fc42 6cfe2982de42
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #!/usr/bin/env python3
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2
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3 # Change the #! line occurring in Python scripts. The new interpreter
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4 # pathname must be given with a -i option.
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5 #
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6 # Command line arguments are files or directories to be processed.
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7 # Directories are searched recursively for files whose name looks
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8 # like a python module.
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9 # Symbolic links are always ignored (except as explicit directory
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10 # arguments). Of course, the original file is kept as a back-up
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11 # (with a "~" attached to its name).
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12 #
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13 # Undoubtedly you can do this using find and sed or perl, but this is
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14 # a nice example of Python code that recurses down a directory tree
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15 # and uses regular expressions. Also note several subtleties like
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16 # preserving the file's mode and avoiding to even write a temp file
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17 # when no changes are needed for a file.
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18 #
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19 # NB: by changing only the function fixfile() you can turn this
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20 # into a program for a different change to Python programs...
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21
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22 import sys
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23 import re
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24 import os
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25 from stat import *
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26 import getopt
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27
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28 err = sys.stderr.write
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29 dbg = err
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30 rep = sys.stdout.write
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31
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32 new_interpreter = None
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33 preserve_timestamps = False
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34
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35 def main():
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36 global new_interpreter
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37 global preserve_timestamps
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38 usage = ('usage: %s -i /interpreter -p file-or-directory ...\n' %
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39 sys.argv[0])
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40 try:
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41 opts, args = getopt.getopt(sys.argv[1:], 'i:p')
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42 except getopt.error as msg:
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43 err(str(msg) + '\n')
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44 err(usage)
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45 sys.exit(2)
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46 for o, a in opts:
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47 if o == '-i':
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48 new_interpreter = a.encode()
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49 if o == '-p':
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50 preserve_timestamps = True
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51 if not new_interpreter or not new_interpreter.startswith(b'/') or \
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52 not args:
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53 err('-i option or file-or-directory missing\n')
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54 err(usage)
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55 sys.exit(2)
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56 bad = 0
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57 for arg in args:
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58 if os.path.isdir(arg):
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59 if recursedown(arg): bad = 1
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60 elif os.path.islink(arg):
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61 err(arg + ': will not process symbolic links\n')
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62 bad = 1
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63 else:
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64 if fix(arg): bad = 1
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65 sys.exit(bad)
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66
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67 ispythonprog = re.compile('^[a-zA-Z0-9_]+\.py$')
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68 def ispython(name):
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69 return bool(ispythonprog.match(name))
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70
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71 def recursedown(dirname):
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72 dbg('recursedown(%r)\n' % (dirname,))
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73 bad = 0
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74 try:
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75 names = os.listdir(dirname)
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76 except os.error as msg:
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77 err('%s: cannot list directory: %r\n' % (dirname, msg))
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78 return 1
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79 names.sort()
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80 subdirs = []
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81 for name in names:
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82 if name in (os.curdir, os.pardir): continue
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83 fullname = os.path.join(dirname, name)
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84 if os.path.islink(fullname): pass
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85 elif os.path.isdir(fullname):
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86 subdirs.append(fullname)
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87 elif ispython(name):
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88 if fix(fullname): bad = 1
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89 for fullname in subdirs:
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90 if recursedown(fullname): bad = 1
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91 return bad
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92
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93 def fix(filename):
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94 ## dbg('fix(%r)\n' % (filename,))
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95 try:
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96 f = open(filename, 'rb')
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97 except IOError as msg:
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98 err('%s: cannot open: %r\n' % (filename, msg))
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99 return 1
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100 line = f.readline()
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101 fixed = fixline(line)
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102 if line == fixed:
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103 rep(filename+': no change\n')
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104 f.close()
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105 return
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106 head, tail = os.path.split(filename)
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107 tempname = os.path.join(head, '@' + tail)
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108 try:
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109 g = open(tempname, 'wb')
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110 except IOError as msg:
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111 f.close()
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112 err('%s: cannot create: %r\n' % (tempname, msg))
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113 return 1
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114 rep(filename + ': updating\n')
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115 g.write(fixed)
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116 BUFSIZE = 8*1024
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117 while 1:
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118 buf = f.read(BUFSIZE)
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119 if not buf: break
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120 g.write(buf)
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121 g.close()
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122 f.close()
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123
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124 # Finishing touch -- move files
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125
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126 mtime = None
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127 atime = None
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128 # First copy the file's mode to the temp file
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129 try:
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130 statbuf = os.stat(filename)
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131 mtime = statbuf.st_mtime
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132 atime = statbuf.st_atime
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133 os.chmod(tempname, statbuf[ST_MODE] & 0o7777)
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134 except os.error as msg:
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135 err('%s: warning: chmod failed (%r)\n' % (tempname, msg))
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136 # Then make a backup of the original file as filename~
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137 try:
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138 os.rename(filename, filename + '~')
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139 except os.error as msg:
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140 err('%s: warning: backup failed (%r)\n' % (filename, msg))
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141 # Now move the temp file to the original file
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142 try:
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143 os.rename(tempname, filename)
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6b18a095c2e7 SF patch 1631942 by Collin Winter:
Guido van Rossum <guido@python.org>
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144 except os.error as msg:
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71a294bd7950 Replace backticks with repr() or "%r"
Walter Dörwald <walter@livinglogic.de>
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145 err('%s: rename failed (%r)\n' % (filename, msg))
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146 return 1
65538
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Senthil Kumaran <orsenthil@gmail.com>
parents: 56221
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147 if preserve_timestamps:
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parents: 56221
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148 if atime and mtime:
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149 try:
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150 os.utime(filename, (atime, mtime))
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151 except os.error as msg:
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parents: 56221
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152 err('%s: reset of timestamp failed (%r)\n' % (filename, msg))
e3e6aa633f33 Fix Issue10140 - Tools/scripts/pathfix.py: add option to preserve timestamps
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parents: 56221
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153 return 1
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154 # Return succes
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155 return 0
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60660341ee10 newslist.py: Added search for .newslistrc.py;
Guido van Rossum <guido@python.org>
parents:
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156
60660341ee10 newslist.py: Added search for .newslistrc.py;
Guido van Rossum <guido@python.org>
parents:
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157 def fixline(line):
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Benjamin Peterson <benjamin@python.org>
parents: 42084
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158 if not line.startswith(b'#!'):
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159 return line
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Benjamin Peterson <benjamin@python.org>
parents: 42084
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160 if b"python" not in line:
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161 return line
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162 return b'#! ' + new_interpreter + b'\n'
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Guido van Rossum <guido@python.org>
parents:
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163
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981fff7363b9 [Patch #1005491 ] use __name__ == '__main__' in scripts
Andrew M. Kuchling <amk@amk.ca>
parents: 31515
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164 if __name__ == '__main__':
981fff7363b9 [Patch #1005491 ] use __name__ == '__main__' in scripts
Andrew M. Kuchling <amk@amk.ca>
parents: 31515
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165 main()