Mercurial > cpython-lru_cache-weakref

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

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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 e9a97b02889b
children 6b18a095c2e7
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1 #! /usr/bin/env python
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2
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3 """cleanfuture [-d][-r][-v] path ...
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4
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5 -d Dry run. Analyze, but don't make any changes to, files.
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6 -r Recurse. Search for all .py files in subdirectories too.
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7 -v Verbose. Print informative msgs.
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8
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9 Search Python (.py) files for future statements, and remove the features
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10 from such statements that are already mandatory in the version of Python
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11 you're using.
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12
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13 Pass one or more file and/or directory paths. When a directory path, all
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14 .py files within the directory will be examined, and, if the -r option is
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15 given, likewise recursively for subdirectories.
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16
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17 Overwrites files in place, renaming the originals with a .bak extension. If
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18 cleanfuture finds nothing to change, the file is left alone. If cleanfuture
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19 does change a file, the changed file is a fixed-point (i.e., running
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20 cleanfuture on the resulting .py file won't change it again, at least not
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e9a97b02889b Fix typo in module docstring.
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21 until you try it again with a later Python release).
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22
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23 Limitations: You can do these things, but this tool won't help you then:
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24
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25 + A future statement cannot be mixed with any other statement on the same
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26 physical line (separated by semicolon).
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27
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28 + A future statement cannot contain an "as" clause.
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29
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30 Example: Assuming you're using Python 2.2, if a file containing
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31
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32 from __future__ import nested_scopes, generators
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33
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34 is analyzed by cleanfuture, the line is rewritten to
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35
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36 from __future__ import generators
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37
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38 because nested_scopes is no longer optional in 2.2 but generators is.
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39 """
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40
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41 import __future__
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42 import tokenize
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43 import os
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44 import sys
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45
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46 dryrun = 0
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47 recurse = 0
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48 verbose = 0
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49
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50 def errprint(*args):
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51 strings = map(str, args)
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52 msg = ' '.join(strings)
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53 if msg[-1:] != '\n':
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54 msg += '\n'
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55 sys.stderr.write(msg)
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56
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57 def main():
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58 import getopt
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59 global verbose, recurse, dryrun
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60 try:
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61 opts, args = getopt.getopt(sys.argv[1:], "drv")
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62 except getopt.error, msg:
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63 errprint(msg)
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64 return
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65 for o, a in opts:
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66 if o == '-d':
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67 dryrun += 1
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68 elif o == '-r':
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69 recurse += 1
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70 elif o == '-v':
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71 verbose += 1
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72 if not args:
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73 errprint("Usage:", __doc__)
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74 return
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75 for arg in args:
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76 check(arg)
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77
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78 def check(file):
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79 if os.path.isdir(file) and not os.path.islink(file):
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80 if verbose:
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81 print "listing directory", file
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82 names = os.listdir(file)
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83 for name in names:
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84 fullname = os.path.join(file, name)
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85 if ((recurse and os.path.isdir(fullname) and
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86 not os.path.islink(fullname))
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87 or name.lower().endswith(".py")):
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88 check(fullname)
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89 return
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90
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91 if verbose:
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92 print "checking", file, "...",
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93 try:
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94 f = open(file)
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95 except IOError, msg:
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96 errprint("%r: I/O Error: %s" % (file, str(msg)))
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97 return
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98
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99 ff = FutureFinder(f, file)
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100 changed = ff.run()
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101 if changed:
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102 ff.gettherest()
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103 f.close()
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104 if changed:
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105 if verbose:
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106 print "changed."
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107 if dryrun:
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108 print "But this is a dry run, so leaving it alone."
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109 for s, e, line in changed:
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110 print "%r lines %d-%d" % (file, s+1, e+1)
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111 for i in range(s, e+1):
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112 print ff.lines[i],
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113 if line is None:
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114 print "-- deleted"
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115 else:
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116 print "-- change to:"
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117 print line,
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118 if not dryrun:
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119 bak = file + ".bak"
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120 if os.path.exists(bak):
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121 os.remove(bak)
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122 os.rename(file, bak)
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123 if verbose:
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124 print "renamed", file, "to", bak
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125 g = open(file, "w")
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126 ff.write(g)
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127 g.close()
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128 if verbose:
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129 print "wrote new", file
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130 else:
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131 if verbose:
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132 print "unchanged."
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133
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134 class FutureFinder:
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135
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136 def __init__(self, f, fname):
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137 self.f = f
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138 self.fname = fname
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139 self.ateof = 0
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140 self.lines = [] # raw file lines
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141
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142 # List of (start_index, end_index, new_line) triples.
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143 self.changed = []
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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144
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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145 # Line-getter for tokenize.
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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146 def getline(self):
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147 if self.ateof:
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
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148 return ""
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
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149 line = self.f.readline()
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
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150 if line == "":
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
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151 self.ateof = 1
19196
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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152 else:
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153 self.lines.append(line)
19196
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154 return line
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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155
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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156 def run(self):
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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157 STRING = tokenize.STRING
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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158 NL = tokenize.NL
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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159 NEWLINE = tokenize.NEWLINE
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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160 COMMENT = tokenize.COMMENT
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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161 NAME = tokenize.NAME
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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162 OP = tokenize.OP
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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163
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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164 changed = self.changed
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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165 get = tokenize.generate_tokens(self.getline).next
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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166 type, token, (srow, scol), (erow, ecol), line = get()
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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167
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168 # Chew up initial comments and blank lines (if any).
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169 while type in (COMMENT, NL, NEWLINE):
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
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170 type, token, (srow, scol), (erow, ecol), line = get()
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
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171
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
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172 # Chew up docstring (if any -- and it may be implicitly catenated!).
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
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173 while type is STRING:
19196
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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174 type, token, (srow, scol), (erow, ecol), line = get()
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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175
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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176 # Analyze the future stmts.
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177 while 1:
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
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178 # Chew up comments and blank lines (if any).
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179 while type in (COMMENT, NL, NEWLINE):
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
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180 type, token, (srow, scol), (erow, ecol), line = get()
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
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181
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
Tim Peters <tim.peters@gmail.com>
parents: 19196
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182 if not (type is NAME and token == "from"):
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
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183 break
19196
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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184 startline = srow - 1 # tokenize is one-based
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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185 type, token, (srow, scol), (erow, ecol), line = get()
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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186
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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187 if not (type is NAME and token == "__future__"):
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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188 break
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
parents:
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189 type, token, (srow, scol), (erow, ecol), line = get()
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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190
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
parents:
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191 if not (type is NAME and token == "import"):
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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192 break
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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parents:
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193 type, token, (srow, scol), (erow, ecol), line = get()
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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194
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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195 # Get the list of features.
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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196 features = []
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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197 while type is NAME:
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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198 features.append(token)
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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199 type, token, (srow, scol), (erow, ecol), line = get()
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
parents:
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200
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
parents:
diff changeset
201 if not (type is OP and token == ','):
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
parents:
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202 break
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
parents:
diff changeset
203 type, token, (srow, scol), (erow, ecol), line = get()
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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204
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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205 # A trailing comment?
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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206 comment = None
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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207 if type is COMMENT:
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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208 comment = token
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
parents:
diff changeset
209 type, token, (srow, scol), (erow, ecol), line = get()
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
parents:
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210
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
parents:
diff changeset
211 if type is not NEWLINE:
19202
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parents: 19196
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212 errprint("Skipping file %r; can't parse line %d:\n%s" %
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
Tim Peters <tim.peters@gmail.com>
parents: 19196
diff changeset
213 (self.fname, srow, line))
19196
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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214 return []
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
parents:
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215
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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216 endline = srow - 1
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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217
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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218 # Check for obsolete features.
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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219 okfeatures = []
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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220 for f in features:
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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221 object = getattr(__future__, f, None)
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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222 if object is None:
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
parents:
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223 # A feature we don't know about yet -- leave it in.
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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224 # They'll get a compile-time error when they compile
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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225 # this program, but that's not our job to sort out.
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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226 okfeatures.append(f)
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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227 else:
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
parents:
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228 released = object.getMandatoryRelease()
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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229 if released is None or released <= sys.version_info:
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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230 # Withdrawn or obsolete.
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
parents:
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231 pass
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
parents:
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232 else:
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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233 okfeatures.append(f)
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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234
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parents: 19196
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235 # Rewrite the line if at least one future-feature is obsolete.
19196
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236 if len(okfeatures) < len(features):
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
parents:
diff changeset
237 if len(okfeatures) == 0:
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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238 line = None
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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239 else:
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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240 line = "from __future__ import "
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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241 line += ', '.join(okfeatures)
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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242 if comment is not None:
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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243 line += ' ' + comment
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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244 line += '\n'
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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245 changed.append((startline, endline, line))
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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246
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247 # Loop back for more future statements.
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248
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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249 return changed
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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250
19202
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parents: 19196
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251 def gettherest(self):
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
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252 if self.ateof:
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
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253 self.therest = ''
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
Tim Peters <tim.peters@gmail.com>
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254 else:
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
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255 self.therest = self.f.read()
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
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256
19196
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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257 def write(self, f):
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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258 changed = self.changed
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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259 assert changed
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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260 # Prevent calling this again.
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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261 self.changed = []
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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262 # Apply changes in reverse order.
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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263 changed.reverse()
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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264 for s, e, line in changed:
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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265 if line is None:
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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266 # pure deletion
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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267 del self.lines[s:e+1]
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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268 else:
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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269 self.lines[s:e+1] = [line]
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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parents:
diff changeset
270 f.writelines(self.lines)
19202
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271 # Copy over the remainder of the file.
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
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272 if self.therest:
47a45da03b09 + A msg on c.l.py reminded me that docstrings can be implicitly catenated.
Tim Peters <tim.peters@gmail.com>
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273 f.write(self.therest)
19196
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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274
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
Tim Peters <tim.peters@gmail.com>
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275 if __name__ == '__main__':
301bcb01b503 Tool to delete (or just rewrite parts of) obsolete future statements.
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276 main()