eric6/Plugins/WizardPlugins/QRegularExpressionWizard/QRegularExpressionWizardServer.py

Wed, 30 Dec 2020 11:00:44 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Wed, 30 Dec 2020 11:00:44 +0100
branch
maintenance
changeset 7924
8a96736d465e
parent 7780
41420f82c0ac
child 8143
2c730d5fd177
permissions
-rw-r--r--

Updated copyright for 2021.

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1 # -*- coding: utf-8 -*-
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2
7924
8a96736d465e Updated copyright for 2021.
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parents: 7780
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3 # Copyright (c) 2013 - 2021 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 Module implementing the PyQt5 server part of the QRegularExpression wizzard.
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8 """
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9
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10 import json
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11 import sys
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12
68b920f307ff Started to rework the QRegularExpression wizard because PyQt4 and PyQt5 cannot be mixed.
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13
68b920f307ff Started to rework the QRegularExpression wizard because PyQt4 and PyQt5 cannot be mixed.
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14 def rxValidate(regexp, options):
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15 """
68b920f307ff Started to rework the QRegularExpression wizard because PyQt4 and PyQt5 cannot be mixed.
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16 Function to validate the given regular expression.
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17
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18 @param regexp regular expression to validate (string)
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19 @param options list of options (list of string)
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20 @return tuple of flag indicating validity (boolean), error
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21 string (string) and error offset (integer)
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22 """
68b920f307ff Started to rework the QRegularExpression wizard because PyQt4 and PyQt5 cannot be mixed.
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23 try:
68b920f307ff Started to rework the QRegularExpression wizard because PyQt4 and PyQt5 cannot be mixed.
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24 from PyQt5.QtCore import QRegularExpression
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25 rxOptions = QRegularExpression.NoPatternOption
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26 if "CaseInsensitiveOption" in options:
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27 rxOptions |= QRegularExpression.CaseInsensitiveOption
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28 if "MultilineOption" in options:
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29 rxOptions |= QRegularExpression.MultilineOption
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30 if "DotMatchesEverythingOption" in options:
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31 rxOptions |= QRegularExpression.DotMatchesEverythingOption
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32 if "ExtendedPatternSyntaxOption" in options:
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33 rxOptions |= QRegularExpression.ExtendedPatternSyntaxOption
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34 if "InvertedGreedinessOption" in options:
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35 rxOptions |= QRegularExpression.InvertedGreedinessOption
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36 if "UseUnicodePropertiesOption" in options:
68b920f307ff Started to rework the QRegularExpression wizard because PyQt4 and PyQt5 cannot be mixed.
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37 rxOptions |= QRegularExpression.UseUnicodePropertiesOption
68b920f307ff Started to rework the QRegularExpression wizard because PyQt4 and PyQt5 cannot be mixed.
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38 if "DontCaptureOption" in options:
68b920f307ff Started to rework the QRegularExpression wizard because PyQt4 and PyQt5 cannot be mixed.
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39 rxOptions |= QRegularExpression.DontCaptureOption
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40
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41 error = ""
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42 errorOffset = -1
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43 re = QRegularExpression(regexp, rxOptions)
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44 valid = re.isValid()
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45 if not valid:
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46 error = re.errorString()
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47 errorOffset = re.patternErrorOffset()
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48 except ImportError:
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49 valid = False
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50 error = "ImportError"
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51 errorOffset = 0
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52
68b920f307ff Started to rework the QRegularExpression wizard because PyQt4 and PyQt5 cannot be mixed.
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53 return valid, error, errorOffset
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54
68b920f307ff Started to rework the QRegularExpression wizard because PyQt4 and PyQt5 cannot be mixed.
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55
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56 def rxExecute(regexp, options, text, startpos):
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57 """
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58 Function to execute the given regular expression for a given text.
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59
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60 @param regexp regular expression to validate (string)
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61 @param options list of options (list of string)
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62 @param text text to execute on (string)
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63 @param startpos start position for the execution (integer)
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64 @return tuple of a flag indicating a successful match (boolean) and
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65 a list of captures containing the complete match as matched string
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66 (string), match start (integer), match end (integer) and match length
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67 (integer) for each entry
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68 """
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69 valid, error, errorOffset = rxValidate(regexp, options)
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70 if not valid:
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71 return valid, error, errorOffset
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72
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73 from PyQt5.QtCore import QRegularExpression
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74 rxOptions = QRegularExpression.NoPatternOption
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75 if "CaseInsensitiveOption" in options:
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76 rxOptions |= QRegularExpression.CaseInsensitiveOption
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77 if "MultilineOption" in options:
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78 rxOptions |= QRegularExpression.MultilineOption
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79 if "DotMatchesEverythingOption" in options:
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80 rxOptions |= QRegularExpression.DotMatchesEverythingOption
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81 if "ExtendedPatternSyntaxOption" in options:
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82 rxOptions |= QRegularExpression.ExtendedPatternSyntaxOption
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83 if "InvertedGreedinessOption" in options:
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84 rxOptions |= QRegularExpression.InvertedGreedinessOption
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85 if "UseUnicodePropertiesOption" in options:
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86 rxOptions |= QRegularExpression.UseUnicodePropertiesOption
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87 if "DontCaptureOption" in options:
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88 rxOptions |= QRegularExpression.DontCaptureOption
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89
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90 matched = False
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91 captures = []
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92 re = QRegularExpression(regexp, rxOptions)
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93 match = re.match(text, startpos)
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94 if match.hasMatch():
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95 matched = True
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96 for index in range(match.lastCapturedIndex() + 1):
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97 captures.append([
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98 match.captured(index),
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99 match.capturedStart(index),
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100 match.capturedEnd(index),
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101 match.capturedLength(index)
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102 ])
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103
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104 return matched, captures
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105
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106
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107 def main():
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108 """
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109 Function containing the main routine.
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110 """
2747
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111 while True:
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112 commandStr = sys.stdin.readline()
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113 try:
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114 commandDict = json.loads(commandStr)
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115 responseDict = {"error": ""}
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116 if "command" in commandDict:
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117 command = commandDict["command"]
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118 if command == "exit":
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119 break
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120 elif command == "available":
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121 try:
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122 import PyQt5 # __IGNORE_WARNING__
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123 responseDict["available"] = True
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124 except ImportError:
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125 responseDict["available"] = False
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126 elif command == "validate":
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127 valid, error, errorOffset = rxValidate(
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128 commandDict["regexp"], commandDict["options"])
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129 responseDict["valid"] = valid
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130 responseDict["errorMessage"] = error
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131 responseDict["errorOffset"] = errorOffset
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132 elif command == "execute":
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133 valid, error, errorOffset = rxValidate(
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134 commandDict["regexp"], commandDict["options"])
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135 if not valid:
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136 responseDict["valid"] = valid
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137 responseDict["errorMessage"] = error
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138 responseDict["errorOffset"] = errorOffset
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139 else:
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140 matched, captures = rxExecute(
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141 commandDict["regexp"], commandDict["options"],
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142 commandDict["text"], commandDict["startpos"])
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143 responseDict["matched"] = matched
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144 responseDict["captures"] = captures
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145 except ValueError as err:
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146 responseDict = {"error": str(err)}
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147 except Exception as err:
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148 responseDict = {"error": str(err)}
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149 responseStr = json.dumps(responseDict)
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150 sys.stdout.write(responseStr)
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151 sys.stdout.flush()
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152
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153 sys.exit(0)
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154
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155
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156 if __name__ == "__main__":
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157 main()

eric ide

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