HexEdit/HexEditGotoWidget.py

Tue, 07 Mar 2017 18:53:18 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Tue, 07 Mar 2017 18:53:18 +0100
changeset 5587
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parent 5389
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child 6048
82ad8ec9548c
permissions
-rw-r--r--

Started to fix code style issues detected by the extended style checker.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2016 - 2017 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 a movement (goto) widget for the hex editor.
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8 """
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9
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10 from __future__ import unicode_literals
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11
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12 from PyQt5.QtCore import pyqtSlot, Qt, QRegExp
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13 from PyQt5.QtGui import QRegExpValidator
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14 from PyQt5.QtWidgets import QWidget
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15
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16 from .Ui_HexEditGotoWidget import Ui_HexEditGotoWidget
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17
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18 import UI.PixmapCache
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19 import Globals
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20
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21
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22 class HexEditGotoWidget(QWidget, Ui_HexEditGotoWidget):
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23 """
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24 Class implementing a movement (goto) widget for the hex editor.
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25 """
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26 def __init__(self, editor, parent=None):
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27 """
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28 Constructor
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29
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30 @param editor reference to the hex editor widget
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31 @type HexEditWidget
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32 @param parent reference to the parent widget
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33 @type QWidget
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34 """
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35 super(HexEditGotoWidget, self).__init__(parent)
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36 self.setupUi(self)
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37
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38 self.__editor = editor
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39
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40 # keep this in sync with the logic in on_gotoButton_clicked()
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41 self.__formatAndValidators = {
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42 "hex": (self.tr("Hex"), QRegExpValidator((QRegExp("[0-9a-f:]*")))),
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43 "dec": (self.tr("Dec"), QRegExpValidator((QRegExp("[0-9]*")))),
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44 }
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45 formatOrder = ["hex", "dec"]
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46
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47 self.__currentFormat = ""
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48
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49 self.closeButton.setIcon(UI.PixmapCache.getIcon("close.png"))
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50
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51 for dataFormat in formatOrder:
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52 formatStr, validator = self.__formatAndValidators[dataFormat]
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53 self.formatCombo.addItem(formatStr, dataFormat)
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54
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55 self.formatCombo.setCurrentIndex(0)
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56
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57 @pyqtSlot()
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58 def on_closeButton_clicked(self):
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59 """
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60 Private slot to close the widget.
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61 """
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62 self.__editor.setFocus(Qt.OtherFocusReason)
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63 self.close()
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64
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65 @pyqtSlot(int)
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66 def on_formatCombo_currentIndexChanged(self, idx):
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67 """
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68 Private slot to handle a selection of the format.
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69
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70 @param idx index of the selected entry
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71 @type int
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72 """
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73 if idx >= 0:
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74 dataFormat = self.formatCombo.itemData(idx)
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75
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76 if dataFormat != self.__currentFormat:
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77 txt = self.offsetEdit.text()
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78 newTxt = self.__convertText(
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79 txt, self.__currentFormat, dataFormat)
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80 self.__currentFormat = dataFormat
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81
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82 self.offsetEdit.setValidator(
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83 self.__formatAndValidators[dataFormat][1])
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84
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85 self.offsetEdit.setText(newTxt)
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86
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87 @pyqtSlot(str)
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88 def on_offsetEdit_textChanged(self, offset):
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89 """
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90 Private slot handling a change of the entered offset.
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91
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92 @param offset entered offset
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93 @type str
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94 """
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95 self.gotoButton.setEnabled(bool(offset))
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96
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97 @pyqtSlot()
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98 def on_gotoButton_clicked(self):
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99 """
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100 Private slot to move the cursor and extend the selection.
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101 """
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102 dataFormat = self.formatCombo.itemData(self.formatCombo.currentIndex())
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103 if dataFormat == "hex":
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104 offset = self.offsetEdit.text().replace(":", "")
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105 # get rid of ':' address separators
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106 offset = int(offset, 16)
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107 else:
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108 offset = int(self.offsetEdit.text(), 10)
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109
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110 fromCursor = self.cursorCheckBox.isChecked()
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111 backwards = self.backCheckBox.isChecked()
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112 extendSelection = self.selectionCheckBox.isChecked()
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113
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114 self.__editor.goto(offset, fromCursor=fromCursor, backwards=backwards,
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115 extendSelection=extendSelection)
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116
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117 def show(self):
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118 """
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119 Public slot to show the widget.
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120 """
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121 self.offsetEdit.selectAll()
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122 self.offsetEdit.setFocus()
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123 super(HexEditGotoWidget, self).show()
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124
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125 def reset(self):
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126 """
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127 Public slot to reset the input widgets.
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128 """
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129 self.offsetEdit.clear()
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130 self.formatCombo.setCurrentIndex(0)
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131 self.cursorCheckBox.setChecked(False)
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132 self.backCheckBox.setChecked(False)
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133 self.selectionCheckBox.setChecked(False)
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134
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135 def keyPressEvent(self, event):
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136 """
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137 Protected slot to handle key press events.
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138
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139 @param event reference to the key press event
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140 @type QKeyEvent
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141 """
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142 if event.key() == Qt.Key_Escape:
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143 self.close()
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144
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145 def __convertText(self, txt, oldFormat, newFormat):
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146 """
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147 Private method to convert text from one format into another.
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148
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149 @param txt text to be converted
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150 @type str
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151 @param oldFormat current format of the text
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152 @type str
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153 @param newFormat format to convert to
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154 @type str
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155 @return converted text
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156 @rtype str
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157 """
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158 if txt and oldFormat and newFormat and oldFormat != newFormat:
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159 # step 1: convert the text to an integer using the old format
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160 if oldFormat == "hex":
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161 txt = txt.replace(":", "") # get rid of ':' address separators
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162 index = int(txt, 16)
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163 else:
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164 index = int(txt, 10)
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165
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166 # step 2: convert the integer to text using the new format
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167 if newFormat == "hex":
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168 txt = "{0:x}".format(index)
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169 txt = Globals.strGroup(txt, ":", 4)
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170 else:
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171 txt = "{0:d}".format(index)
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172
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173 return txt

eric ide

mercurial