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annotate roundup/anypy/strings.py @ 8240:1189c742e4b3

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fix: crash roundup-admin perftest password without rounds= argument. If the rounds value is taken from the config file, it doesn't need to be parsed into an int.
author John Rouillard <rouilj@ieee.org>
date Mon, 30 Dec 2024 02:59:27 -0500
parents 4261449081be
children
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1 # Roundup represents text internally using the native Python str type.
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2 # In Python 3, these are Unicode strings. In Python 2, these are
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3 # encoded using UTF-8, and the Python 2 unicode type is only used in a
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4 # few places, generally for interacting with external modules
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5 # requiring that type to be used.
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6
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7 import ast
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8 import io
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9 import sys
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10
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11 _py3 = sys.version_info[0] > 2
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12
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13 if _py3:
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14 StringIO = io.StringIO
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15 else:
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16 StringIO = io.BytesIO
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17
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18
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19 def b2s(b):
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20 """Convert a UTF-8 encoded bytes object to the internal string format."""
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21 if _py3:
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22 return b.decode('utf-8')
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23 else:
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24 return b
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25
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26
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27 def s2b(s):
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28 """Convert a string object to UTF-8 encoded bytes."""
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29 if _py3:
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30 return s.encode('utf-8')
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31 else:
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32 return s
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33
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35 def bs2b(s):
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36 """Convert a string object or UTF-8 encoded bytes to UTF-8 encoded bytes.
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37 """
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38 if _py3:
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39 if isinstance(s, bytes):
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40 return s
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41 else:
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42 return s.encode('utf-8')
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43 else:
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44 return s
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45
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46
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47 def s2u(s, errors='strict'):
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48 """Convert a string object to a Unicode string."""
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49 if _py3:
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50 return s
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51 else:
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52 return unicode(s, 'utf-8', errors) # noqa: F821
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53
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54
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55 def u2s(u):
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56 """Convert a Unicode string to the internal string format."""
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57 if _py3:
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58 return u
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59 else:
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60 return u.encode('utf-8')
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61
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62
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63 def us2u(s, errors='strict'):
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64 """Convert a string or Unicode string to a Unicode string."""
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65 if _py3 or isinstance(s, unicode): # noqa: F821
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66 return s
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67 else:
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68 return unicode(s, 'utf-8', errors) # noqa: F821
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69
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70
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71 def us2s(u):
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72 """Convert a string or Unicode string to the internal string format."""
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73 if _py3:
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74 return u
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75 elif isinstance(u, unicode): # noqa: F821
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76 return u.encode('utf-8')
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77 else:
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78 return u
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79
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80
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81 def uany2s(u):
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82 """Convert a Unicode string or other object to the internal string format.
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83
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84 Objects that are not Unicode strings are passed to str()."""
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85 if _py3:
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86 return str(u)
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87 elif isinstance(u, unicode): # noqa: F821
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88 return u.encode('utf-8')
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89 else:
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90 return str(u)
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91
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92
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93 def is_us(s):
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94 """Return whether an object is a string or Unicode string."""
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95 if _py3:
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96 return isinstance(s, str)
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97 else:
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98 return isinstance(s, (str, unicode)) # noqa: F821
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99
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100
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101 def uchr(c):
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102 """Return the Unicode string containing the given character."""
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103 if _py3:
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104 return chr(c)
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105 else:
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106 return unichr(c) # noqa: F821
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107
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108 # CSV files used for export and import represent strings in the style
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109 # used by repr in Python 2; this means that each byte of the UTF-8
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110 # representation is represented by a \x escape if not a printable
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111 # ASCII character. When such a representation is interpreted by eval
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112 # in Python 3, the effect is that the Unicode characters in the
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113 # resulting string correspond to UTF-8 bytes, so encoding the string
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114 # as ISO-8859-1 produces the correct byte-string which must then be
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115 # decoded as UTF-8 to produce the correct Unicode string. The same
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116 # representations are also used for journal storage in RDBMS
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117 # databases, so that the database can be compatible between Python 2
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118 # and Python 3.
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119
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120
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121 def repr_export(v):
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122 """Return a Python-2-style representation of a value for export to CSV."""
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123 if _py3:
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124 if isinstance(v, str):
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125 return repr(s2b(v))[1:]
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126 elif isinstance(v, dict):
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127 repr_vals = []
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128 for key, value in sorted(v.items()):
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129 repr_vals.append('%s: %s' % (repr_export(key),
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130 repr_export(value)))
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131 return '{%s}' % ', '.join(repr_vals)
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132 else:
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133 return repr(v)
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134 else:
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135 return repr(v)
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136
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137
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138 def eval_import(s):
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139 """Evaluate a Python-2-style value imported from a CSV file."""
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140 try:
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141 if _py3:
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142 try:
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143 v = ast.literal_eval(s)
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144 except SyntaxError:
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145 # handle case where link operation reports id a long
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146 # int ('issue', 5002L, "status") rather than as a
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147 # string. This was a bug that existed and was fixed
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148 # before or with v1.2.0
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149 import re # noqa: PLC0415
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150 v = ast.literal_eval(re.sub(r', ([0-9]+)L,', r', \1,', s))
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151
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152 if isinstance(v, str):
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153 return v.encode('iso-8859-1').decode('utf-8')
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154 elif isinstance(v, dict):
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155 v_mod = {}
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156 # ruff: noqa: PLW2901
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157 for key, value in v.items():
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158 if isinstance(key, str):
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159 key = key.encode('iso-8859-1').decode('utf-8')
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160 if isinstance(value, str):
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161 value = value.encode('iso-8859-1').decode('utf-8')
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162 v_mod[key] = value
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163 return v_mod
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164 else:
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165 return v
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166 else:
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167 return ast.literal_eval(s)
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168
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169 except (ValueError, SyntaxError) as e:
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170 raise ValueError(
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171 ("Error %(exception)s trying to parse value '%(value)s'") %
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172 {'exception': e, 'value': s})
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