Mercurial > cpython-lru_cache-weakref

annotate Tools/scripts/pathfix.py @ 24042:63fbbed10714 legacy-trunk

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Simplify HTTPSConnection constructor. See discussion in SF bug 458463.
author Jeremy Hylton <jeremy@alum.mit.edu>
date Fri, 28 Jun 2002 23:38:14 +0000
parents 1881b968989b
children 8a7a2f1f88f0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4568
4341574e163b Changed logic so it now replaces anything that has #! and python in
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1 #! /usr/bin/env python
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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 regex
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24 import os
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25 from stat import *
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26 import string
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27 import getopt
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28
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29 err = sys.stderr.write
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30 dbg = err
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31 rep = sys.stdout.write
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32
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33 new_interpreter = None
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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 usage = ('usage: %s -i /interpreter file-or-directory ...\n' %
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38 sys.argv[0])
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39 try:
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40 opts, args = getopt.getopt(sys.argv[1:], 'i:')
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41 except getopt.error, msg:
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42 err(msg + '\n')
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43 err(usage)
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44 sys.exit(2)
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45 for o, a in opts:
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46 if o == '-i':
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47 new_interpreter = a
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48 if not new_interpreter or new_interpreter[0] != '/' or not args:
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49 err('-i option or file-or-directory missing\n')
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50 err(usage)
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51 sys.exit(2)
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52 bad = 0
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53 for arg in args:
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54 if os.path.isdir(arg):
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55 if recursedown(arg): bad = 1
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56 elif os.path.islink(arg):
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57 err(arg + ': will not process symbolic links\n')
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58 bad = 1
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59 else:
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60 if fix(arg): bad = 1
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61 sys.exit(bad)
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62
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63 ispythonprog = regex.compile('^[a-zA-Z0-9_]+\.py$')
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64 def ispython(name):
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65 return ispythonprog.match(name) >= 0
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66
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67 def recursedown(dirname):
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68 dbg('recursedown(' + `dirname` + ')\n')
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69 bad = 0
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70 try:
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71 names = os.listdir(dirname)
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72 except os.error, msg:
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73 err(dirname + ': cannot list directory: ' + `msg` + '\n')
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74 return 1
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75 names.sort()
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76 subdirs = []
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77 for name in names:
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78 if name in (os.curdir, os.pardir): continue
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79 fullname = os.path.join(dirname, name)
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80 if os.path.islink(fullname): pass
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81 elif os.path.isdir(fullname):
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82 subdirs.append(fullname)
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83 elif ispython(name):
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84 if fix(fullname): bad = 1
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85 for fullname in subdirs:
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86 if recursedown(fullname): bad = 1
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87 return bad
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88
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89 def fix(filename):
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1881b968989b Hand repair of cases where reindent changed lines of the form
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90 ## dbg('fix(' + `filename` + ')\n')
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91 try:
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92 f = open(filename, 'r')
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93 except IOError, msg:
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94 err(filename + ': cannot open: ' + `msg` + '\n')
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95 return 1
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96 line = f.readline()
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97 fixed = fixline(line)
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98 if line == fixed:
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99 rep(filename+': no change\n')
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100 f.close()
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101 return
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102 head, tail = os.path.split(filename)
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103 tempname = os.path.join(head, '@' + tail)
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104 try:
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105 g = open(tempname, 'w')
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106 except IOError, msg:
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107 f.close()
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108 err(tempname+': cannot create: '+`msg`+'\n')
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109 return 1
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110 rep(filename + ': updating\n')
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111 g.write(fixed)
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112 BUFSIZE = 8*1024
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113 while 1:
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114 buf = f.read(BUFSIZE)
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115 if not buf: break
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116 g.write(buf)
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117 g.close()
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118 f.close()
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119
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120 # Finishing touch -- move files
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121
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122 # First copy the file's mode to the temp file
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123 try:
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124 statbuf = os.stat(filename)
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125 os.chmod(tempname, statbuf[ST_MODE] & 07777)
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126 except os.error, msg:
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127 err(tempname + ': warning: chmod failed (' + `msg` + ')\n')
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128 # Then make a backup of the original file as filename~
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129 try:
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130 os.rename(filename, filename + '~')
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131 except os.error, msg:
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132 err(filename + ': warning: backup failed (' + `msg` + ')\n')
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133 # Now move the temp file to the original file
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134 try:
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135 os.rename(tempname, filename)
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136 except os.error, msg:
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137 err(filename + ': rename failed (' + `msg` + ')\n')
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138 return 1
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139 # Return succes
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140 return 0
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141
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142 def fixline(line):
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143 if line[:2] != '#!':
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144 return line
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145 if string.find(line, "python") < 0:
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146 return line
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147 return '#! %s\n' % new_interpreter
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148
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149 main()