DataViews/CodeMetrics.py

Sat, 05 Jul 2014 15:02:45 +0200

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sat, 05 Jul 2014 15:02:45 +0200
changeset 3682
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parent 3178
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child 4021
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permissions
-rw-r--r--

Changed a few files to reference eric6.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2003 - 2014 Detlev Offenbach <detlev@die-offenbachs.de>
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4 #
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5
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6 #
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7 # Code mainly borrowed from the Pythius package which is
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8 # Copyright (c) 2001 by J├╝rgen Hermann <jh@web.de>
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9 #
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10
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11 """
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12 Module implementing a simple Python code metrics analyzer.
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13
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14 @exception ValueError the tokenize module is too old
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15 """
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16
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17 from __future__ import unicode_literals
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18
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19 import os
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20 import io
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21 import sys
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22 import keyword
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23 import token
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24 import tokenize
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25
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26 import Utilities
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27
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28 KEYWORD = token.NT_OFFSET + 1
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29 COMMENT = tokenize.COMMENT
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30 INDENT = token.INDENT
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31 DEDENT = token.DEDENT
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32 NEWLINE = token.NEWLINE
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33 EMPTY = tokenize.NL
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34
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35
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36 class Token(object):
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37 """
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38 Class to store the token related infos.
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39 """
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40 def __init__(self, **kw):
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41 """
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42 Constructor
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43
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44 @keyparam **kw list of key, value pairs
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45 """
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46 self.__dict__.update(kw)
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47
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48
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49 class Parser(object):
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50 """
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51 Class used to parse the source code of a Python file.
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52 """
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53 def parse(self, text):
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54 """
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55 Public method used to parse the source code.
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56
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57 @param text the source code as read from a Python source file
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58 """
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59 self.tokenlist = []
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60
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61 # convert eols
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62 text = Utilities.convertLineEnds(text, os.linesep)
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63
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64 if not text.endswith(os.linesep):
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65 text = "{0}{1}".format(text, os.linesep)
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66
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67 self.lines = text.count(os.linesep)
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68
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69 source = io.BytesIO(text.encode("utf-8"))
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70 try:
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71 if sys.version_info[0] == 2:
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72 gen = tokenize.generate_tokens(source.readline)
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73 else:
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74 gen = tokenize.tokenize(source.readline)
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75 for toktype, toktext, start, end, line in gen:
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76 (srow, scol) = start
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77 (erow, ecol) = end
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78 if toktype in [token.NEWLINE, tokenize.NL]:
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79 self.__addToken(toktype, os.linesep, srow, scol, line)
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80 elif toktype in [token.INDENT, token.DEDENT]:
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81 self.__addToken(toktype, '', srow, scol, line)
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82 elif toktype == token.NAME and keyword.iskeyword(toktext):
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83 toktype = KEYWORD
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84 self.__addToken(toktype, toktext, srow, scol, line)
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85 else:
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86 self.__addToken(toktype, toktext, srow, scol, line)
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87 except tokenize.TokenError as msg:
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88 print("Token Error: {0}".format(str(msg)))
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89 return
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90
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91 return
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92
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93 def __addToken(self, toktype, toktext, srow, scol, line):
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94 """
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95 Private method used to add a token to our list of tokens.
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96
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97 @param toktype the type of the token (int)
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98 @param toktext the text of the token (string)
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99 @param srow starting row of the token (int)
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100 @param scol starting column of the token (int)
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101 @param line logical line the token was found (string)
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102 """
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103 self.tokenlist.append(Token(type=toktype, text=toktext, row=srow,
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104 col=scol, line=line))
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105
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106 spacer = ' '
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107
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108
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109 class SourceStat(object):
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110 """
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111 Class used to calculate and store the source code statistics.
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112 """
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113 def __init__(self):
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114 """
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115 Constructor
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116 """
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117 self.identifiers = []
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118 # list of identifiers in order of appearance
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119 self.active = [('TOTAL ', -1, 0)]
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120 # stack of active identifiers and indent levels
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121 self.counters = {}
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122 # counters per identifier
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123 self.indent_level = 0
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124
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125 def indent(self, tok):
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126 """
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127 Public method used to increment the indentation level.
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128
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129 @param tok a token (Token, ignored)
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130 """
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131 self.indent_level += 1
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132
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parents:
diff changeset
133 def dedent(self, tok):
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parents:
diff changeset
134 """
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parents:
diff changeset
135 Public method used to decrement the indentation level.
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parents:
diff changeset
136
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parents:
diff changeset
137 @param tok the token to be processed (Token)
2953
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138 @exception ValueError raised to indicate an invalid indentation level
0
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parents:
diff changeset
139 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
140 self.indent_level -= 1
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parents:
diff changeset
141 if self.indent_level < 0:
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parents:
diff changeset
142 raise ValueError("INTERNAL ERROR: Negative indent level")
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parents:
diff changeset
143
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parents:
diff changeset
144 # remove identifiers of a higher indentation
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parents:
diff changeset
145 while self.active and self.active[-1][1] >= self.indent_level:
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parents:
diff changeset
146 counters = self.counters.setdefault(self.active[-1][0], {})
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parents:
diff changeset
147 counters['start'] = self.active[-1][2]
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diff changeset
148 counters['end'] = tok.row - 1
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parents:
diff changeset
149 counters['lines'] = tok.row - self.active[-1][2]
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parents:
diff changeset
150 del self.active[-1]
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parents:
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151
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parents:
diff changeset
152 def push(self, identifier, row):
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parents:
diff changeset
153 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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154 Public method used to store an identifier.
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parents:
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155
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parents:
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156 @param identifier the identifier to be remembered (string)
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parents:
diff changeset
157 @param row the row, the identifier is defined in (int)
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parents:
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158 """
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parents:
diff changeset
159 if len(self.active) > 1 and self.indent_level > self.active[-1][1]:
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parents:
diff changeset
160 qualified = self.active[-1][0] + '.' + identifier
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diff changeset
161 else:
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parents:
diff changeset
162 qualified = identifier
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parents:
diff changeset
163 self.active.append((qualified, self.indent_level, row))
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parents:
diff changeset
164 self.identifiers.append(qualified)
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parents:
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165
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parents:
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166 def inc(self, key, value=1):
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parents:
diff changeset
167 """
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parents:
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168 Public method used to increment the value of a key.
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parents:
diff changeset
169
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parents:
diff changeset
170 @param key the key to be incremented
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parents:
diff changeset
171 @param value the increment (int)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
172 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
173 for id, level, row in self.active:
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
174 counters = self.counters.setdefault(id, {})
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parents:
diff changeset
175 counters[key] = counters.setdefault(key, 0) + value
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parents:
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176
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
177 def dump(self):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
178 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
179 Public method used to format and print the collected statistics.
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parents:
diff changeset
180 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
181 label_len = 79 - len(spacer) - 6 * 6
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parents: 2986
diff changeset
182 print(spacer + "FUNCTION / CLASS".ljust(label_len) +
801289962f4e Fixed a bunch of visible indentation issues.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2986
diff changeset
183 " START END LINES NLOC COMM EMPTY")
0
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parents:
diff changeset
184 for id in self.identifiers + ['TOTAL ']:
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
185 label = id
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
186 counters = self.counters.get(id, {})
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
187 msg = spacer + label.ljust(label_len)
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parents:
diff changeset
188
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
189 for key in ('start', 'end', 'lines', 'nloc', 'comments', 'empty'):
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parents:
diff changeset
190 if counters.get(key, 0):
406
eacf81fad150 Started converting the string formatting stuff.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 96
diff changeset
191 msg += " {0:d}".format(counters[key])
0
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parents:
diff changeset
192 else:
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parents:
diff changeset
193 msg += " " * 6
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parents:
diff changeset
194
12
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parents: 0
diff changeset
195 print(msg)
0
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diff changeset
196
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parents:
diff changeset
197 def getCounter(self, id, key):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
198 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
199 Public method used to get a specific counter value.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
200
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
201 @param id id of the counter (string)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
202 @param key key of the value to be retrieved (string)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
203 @return the value of the requested counter (int)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
204 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
205 return self.counters.get(id, {}).get(key, 0)
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parents:
diff changeset
206
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8cd4d08fa9f6 Made code mostly PEP 8 compliant (except all whitespace and line length).
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parents: 791
diff changeset
207
0
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parents:
diff changeset
208 def summarize(total, key, value):
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
209 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
210 Module function used to collect overall statistics.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
211
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
212 @param total the dictionary for the overall statistics
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
213 @param key the key to be summarize
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
214 @param value the value to be added to the overall statistics
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parents:
diff changeset
215 @return the value added to the overall statistics
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
216 """
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
217 total[key] = total.setdefault(key, 0) + value
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
218 return value
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parents:
diff changeset
219
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parents: 791
diff changeset
220
0
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parents:
diff changeset
221 def analyze(filename, total):
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8cd4d08fa9f6 Made code mostly PEP 8 compliant (except all whitespace and line length).
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 791
diff changeset
222 """
0
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
223 Module function used analyze the source of a Python file.
de9c2efb9d02 Started porting eric4 to Python3
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parents:
diff changeset
224
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parents:
diff changeset
225 @param filename name of the Python file to be analyzed (string)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
226 @param total dictionary receiving the overall code statistics
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
227 @return a statistics object with the collected code statistics (SourceStat)
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
228 """
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
229 try:
45
9a18f4dbb493 Did a lot of encoding related stuff.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 13
diff changeset
230 text = Utilities.readEncodedFile(filename)[0]
9a18f4dbb493 Did a lot of encoding related stuff.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 13
diff changeset
231 except (UnicodeError, IOError):
9a18f4dbb493 Did a lot of encoding related stuff.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 13
diff changeset
232 return SourceStat()
0
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parents:
diff changeset
233
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
234 parser = Parser()
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
235 parser.parse(text)
de9c2efb9d02 Started porting eric4 to Python3
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parents:
diff changeset
236
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
237 stats = SourceStat()
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
238 stats.inc('lines', parser.lines)
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
239 for idx in range(len(parser.tokenlist)):
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
240 tok = parser.tokenlist[idx]
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
241
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
242 # counting
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
243 if tok.type == NEWLINE:
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
244 stats.inc('nloc')
12
1d8dd9706f46 First commit after changing to Python 3.1.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 0
diff changeset
245 elif tok.type == COMMENT:
0
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
246 stats.inc('comments')
12
1d8dd9706f46 First commit after changing to Python 3.1.
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parents: 0
diff changeset
247 elif tok.type == EMPTY:
945
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 791
diff changeset
248 if parser.tokenlist[idx - 1].type == token.OP:
0
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
249 stats.inc('nloc')
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
250 else:
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
251 stats.inc('empty')
945
8cd4d08fa9f6 Made code mostly PEP 8 compliant (except all whitespace and line length).
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 791
diff changeset
252 elif tok.type == INDENT:
12
1d8dd9706f46 First commit after changing to Python 3.1.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 0
diff changeset
253 stats.indent(tok)
945
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 791
diff changeset
254 elif tok.type == DEDENT:
12
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parents: 0
diff changeset
255 stats.dedent(tok)
1d8dd9706f46 First commit after changing to Python 3.1.
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parents: 0
diff changeset
256 elif tok.type == KEYWORD:
0
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
257 if tok.text in ("class", "def"):
945
8cd4d08fa9f6 Made code mostly PEP 8 compliant (except all whitespace and line length).
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 791
diff changeset
258 stats.push(parser.tokenlist[idx + 1].text, tok.row)
0
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parents:
diff changeset
259
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
260 # collect overall statistics
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
261 summarize(total, 'lines', parser.lines)
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
262 summarize(total, 'bytes', len(text))
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
263 summarize(total, 'comments', stats.getCounter('TOTAL ', 'comments'))
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
264 summarize(total, 'empty lines', stats.getCounter('TOTAL ', 'empty'))
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265 summarize(total, 'non-commentary lines',
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266 stats.getCounter('TOTAL ', 'nloc'))
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267
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268 return stats
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269
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270
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271 def main():
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272 """
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273 Module main function used when called as a script.
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274
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275 Loop over all files given on the command line and collect the individual
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276 and overall source code statistics.
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277 """
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278 import sys
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279
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280 files = sys.argv[1:]
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281
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282 if not files:
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283 sys.exit(1)
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284
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285 total = {}
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286
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287 summarize(total, 'files', len(files))
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288 for file in files:
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289 print(file)
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290 stats = analyze(file, total)
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291 stats.dump()
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292
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293 print("\nSummary")
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294 for key in ['files', 'lines', 'bytes', 'comments',
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295 'empty lines', 'non-commentary lines']:
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296 print(key.ljust(20) + "{0:d}".format(total[key]))
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297
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298 sys.exit(0)
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299
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300 if __name__ == "__main__":
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301 main()

eric ide

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