Mercurial > cpython-lru_cache-weakref

annotate Tools/scripts/checkappend.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 d27684ab215a
children 8a7a2f1f88f0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #! /usr/bin/env python
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2
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3 # Released to the public domain, by Tim Peters, 28 February 2000.
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4
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5 """checkappend.py -- search for multi-argument .append() calls.
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6
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7 Usage: specify one or more file or directory paths:
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8 checkappend [-v] file_or_dir [file_or_dir] ...
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9
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10 Each file_or_dir is checked for multi-argument .append() calls. When
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11 a directory, all .py files in the directory, and recursively in its
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12 subdirectories, are checked.
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13
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14 Use -v for status msgs. Use -vv for more status msgs.
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15
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16 In the absence of -v, the only output is pairs of the form
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17
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18 filename(linenumber):
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19 line containing the suspicious append
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20
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21 Note that this finds multi-argument append calls regardless of whether
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22 they're attached to list objects. If a module defines a class with an
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23 append method that takes more than one argument, calls to that method
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24 will be listed.
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25
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26 Note that this will not find multi-argument list.append calls made via a
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27 bound method object. For example, this is not caught:
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28
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29 somelist = []
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30 push = somelist.append
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31 push(1, 2, 3)
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32 """
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33
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34 __version__ = 1, 0, 0
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35
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36 import os
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37 import sys
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38 import string
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39 import getopt
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40 import tokenize
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41
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42 verbose = 0
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43
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44 def errprint(*args):
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45 msg = string.join(args)
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46 sys.stderr.write(msg)
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47 sys.stderr.write("\n")
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48
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49 def main():
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50 args = sys.argv[1:]
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51 global verbose
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52 try:
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53 opts, args = getopt.getopt(sys.argv[1:], "v")
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54 except getopt.error, msg:
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d27684ab215a Correct type error in getopt.error handling code.
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55 errprint(str(msg) + "\n\n" + __doc__)
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56 return
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57 for opt, optarg in opts:
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58 if opt == '-v':
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59 verbose = verbose + 1
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60 if not args:
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61 errprint(__doc__)
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62 return
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63 for arg in args:
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64 check(arg)
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65
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66 def check(file):
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67 if os.path.isdir(file) and not os.path.islink(file):
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68 if verbose:
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69 print "%s: listing directory" % `file`
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70 names = os.listdir(file)
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71 for name in names:
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72 fullname = os.path.join(file, name)
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73 if ((os.path.isdir(fullname) and
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74 not os.path.islink(fullname))
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75 or os.path.normcase(name[-3:]) == ".py"):
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76 check(fullname)
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77 return
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78
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79 try:
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80 f = open(file)
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81 except IOError, msg:
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82 errprint("%s: I/O Error: %s" % (`file`, str(msg)))
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83 return
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84
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85 if verbose > 1:
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86 print "checking", `file`, "..."
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87
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88 ok = AppendChecker(file, f).run()
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89 if verbose and ok:
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90 print "%s: Clean bill of health." % `file`
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91
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92 [FIND_DOT,
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93 FIND_APPEND,
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94 FIND_LPAREN,
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95 FIND_COMMA,
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96 FIND_STMT] = range(5)
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97
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98 class AppendChecker:
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99 def __init__(self, fname, file):
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100 self.fname = fname
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101 self.file = file
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102 self.state = FIND_DOT
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103 self.nerrors = 0
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104
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105 def run(self):
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106 try:
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107 tokenize.tokenize(self.file.readline, self.tokeneater)
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108 except tokenize.TokenError, msg:
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109 errprint("%s: Token Error: %s" % (`self.fname`, str(msg)))
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110 self.nerrors = self.nerrors + 1
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111 return self.nerrors == 0
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112
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113 def tokeneater(self, type, token, start, end, line,
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114 NEWLINE=tokenize.NEWLINE,
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115 JUNK=(tokenize.COMMENT, tokenize.NL),
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116 OP=tokenize.OP,
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117 NAME=tokenize.NAME):
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118
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119 state = self.state
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120
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121 if type in JUNK:
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122 pass
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123
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124 elif state is FIND_DOT:
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125 if type is OP and token == ".":
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126 state = FIND_APPEND
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127
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128 elif state is FIND_APPEND:
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129 if type is NAME and token == "append":
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130 self.line = line
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131 self.lineno = start[0]
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132 state = FIND_LPAREN
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133 else:
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134 state = FIND_DOT
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135
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136 elif state is FIND_LPAREN:
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137 if type is OP and token == "(":
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138 self.level = 1
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139 state = FIND_COMMA
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140 else:
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141 state = FIND_DOT
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142
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143 elif state is FIND_COMMA:
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144 if type is OP:
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145 if token in ("(", "{", "["):
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146 self.level = self.level + 1
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147 elif token in (")", "}", "]"):
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148 self.level = self.level - 1
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149 if self.level == 0:
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150 state = FIND_DOT
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151 elif token == "," and self.level == 1:
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152 self.nerrors = self.nerrors + 1
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153 print "%s(%d):\n%s" % (self.fname, self.lineno,
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154 self.line)
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155 # don't gripe about this stmt again
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156 state = FIND_STMT
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157
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158 elif state is FIND_STMT:
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159 if type is NEWLINE:
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160 state = FIND_DOT
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161
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162 else:
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163 raise SystemError("unknown internal state '%s'" % `state`)
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164
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165 self.state = state
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166
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167 if __name__ == '__main__':
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168 main()