Helpviewer/OpenSearch/OpenSearchReader.py

Sun, 05 Jan 2014 23:22:17 +0100

author
T.Rzepka <Tobias.Rzepka@gmail.com>
date
Sun, 05 Jan 2014 23:22:17 +0100
branch
Py2 comp.
changeset 3178
f25fc1364c88
parent 3161
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parent 3160
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child 3656
441956d8fce5
permissions
-rw-r--r--

Merge with default branch.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2009 - 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 Module implementing a reader for open search engine descriptions.
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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 PyQt4.QtCore import QXmlStreamReader, QIODevice, QCoreApplication
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13
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14
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15 class OpenSearchReader(QXmlStreamReader):
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16 """
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17 Class implementing a reader for open search engine descriptions.
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18 """
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19 def read(self, device):
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20 """
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21 Public method to read the description.
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22
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23 @param device device to read the description from (QIODevice)
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24 @return search engine object (OpenSearchEngine)
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25 """
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26 self.clear()
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27
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28 if not device.isOpen():
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29 device.open(QIODevice.ReadOnly)
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30
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31 self.setDevice(device)
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32 return self.__read()
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33
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34 def __read(self):
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35 """
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36 Private method to read and parse the description.
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37
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38 @return search engine object (OpenSearchEngine)
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39 """
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40 from .OpenSearchEngine import OpenSearchEngine
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41 engine = OpenSearchEngine()
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42
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43 while not self.isStartElement() and not self.atEnd():
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44 self.readNext()
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45
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46 if self.name() != "OpenSearchDescription" or \
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47 self.namespaceUri() != "http://a9.com/-/spec/opensearch/1.1/":
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48 self.raiseError(QCoreApplication.translate(
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49 "OpenSearchReader",
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50 "The file is not an OpenSearch 1.1 file."))
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51 return engine
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52
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53 while not self.atEnd():
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54 self.readNext()
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55
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56 if not self.isStartElement():
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57 continue
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58
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59 if self.name() == "ShortName":
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60 engine.setName(self.readElementText())
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61
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62 elif self.name() == "Description":
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63 engine.setDescription(self.readElementText())
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64
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65 elif self.name() == "Url":
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66 type_ = self.attributes().value("type")
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67 url = self.attributes().value("template")
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68 method = self.attributes().value("method")
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69
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70 if type_ == "application/x-suggestions+json" and \
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71 engine.suggestionsUrlTemplate():
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72 continue
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73
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74 if (not type_ or
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75 type_ == "text/html" or
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76 type_ == "application/xhtml+xml") and \
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77 engine.suggestionsUrlTemplate():
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78 continue
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79
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80 if not url:
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81 continue
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82
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83 parameters = []
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84
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85 self.readNext()
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86
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87 while not (self.isEndElement() and self.name() == "Url"):
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88 if not self.isStartElement() or \
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89 (self.name() != "Param" and self.name() != "Parameter"):
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90 self.readNext()
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91 continue
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92
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93 key = self.attributes().value("name")
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94 value = self.attributes().value("value")
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95
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96 if key and value:
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97 parameters.append((key, value))
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98
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99 while not self.isEndElement():
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100 self.readNext()
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101
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102 if type_ == "application/x-suggestions+json":
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103 engine.setSuggestionsUrlTemplate(url)
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104 engine.setSuggestionsParameters(parameters)
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105 engine.setSuggestionsMethod(method)
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106 elif not type_ or \
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107 type_ == "text/html" or \
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108 type_ == "application/xhtml+xml":
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109 engine.setSearchUrlTemplate(url)
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110 engine.setSearchParameters(parameters)
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111 engine.setSearchMethod(method)
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112
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113 elif self.name() == "Image":
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114 engine.setImageUrl(self.readElementText())
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115
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116 if engine.name() and \
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117 engine.description() and \
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118 engine.suggestionsUrlTemplate() and \
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119 engine.searchUrlTemplate() and \
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120 engine.imageUrl():
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121 break
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122
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123 return engine

eric ide

mercurial