Helpviewer/OpenSearch/OpenSearchReader.py

Fri, 11 Mar 2011 16:51:57 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Fri, 11 Mar 2011 16:51:57 +0100
changeset 945
8cd4d08fa9f6
parent 791
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child 1112
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permissions
-rw-r--r--

Made code mostly PEP 8 compliant (except all whitespace and line length).

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2009 - 2011 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 PyQt4.QtCore import *
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11
12
1d8dd9706f46 First commit after changing to Python 3.1.
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12 from .OpenSearchEngine import OpenSearchEngine
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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 engine = OpenSearchEngine()
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41
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42 while not self.isStartElement() and not self.atEnd():
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43 self.readNext()
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44
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45 if self.name() != "OpenSearchDescription" or \
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46 self.namespaceUri() != "http://a9.com/-/spec/opensearch/1.1/":
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47 self.raiseError(QCoreApplication.translate("OpenSearchReader",
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48 "The file is not an OpenSearch 1.1 file."))
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49 return engine
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50
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51 while not self.atEnd():
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52 self.readNext()
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53
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54 if not self.isStartElement():
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55 continue
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56
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57 if self.name() == "ShortName":
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58 engine.setName(self.readElementText())
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59
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60 elif self.name() == "Description":
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61 engine.setDescription(self.readElementText())
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62
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63 elif self.name() == "Url":
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64 type_ = self.attributes().value("type")
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65 url = self.attributes().value("template")
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66 method = self.attributes().value("method")
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67
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68 if type_ == "application/x-suggestions+json" and \
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69 engine.suggestionsUrlTemplate():
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70 continue
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71
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72 if (not type_ or \
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73 type_ == "text/html" or \
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74 type_ == "application/xhtml+xml") and \
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75 engine.suggestionsUrlTemplate():
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76 continue
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77
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78 if not url:
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79 continue
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80
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81 parameters = []
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82
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83 self.readNext()
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84
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85 while not (self.isEndElement() and self.name() == "Url"):
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86 if not self.isStartElement() or \
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87 (self.name() != "Param" and self.name() != "Parameter"):
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88 self.readNext()
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89 continue
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90
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91 key = self.attributes().value("name")
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92 value = self.attributes().value("value")
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93
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94 if key and value:
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95 parameters.append((key, value))
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96
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97 while not self.isEndElement():
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98 self.readNext()
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99
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100 if type_ == "application/x-suggestions+json":
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101 engine.setSuggestionsUrlTemplate(url)
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102 engine.setSuggestionsParameters(parameters)
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103 engine.setSuggestionsMethod(method)
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104 elif not type_ or \
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105 type_ == "text/html" or \
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106 type_ == "application/xhtml+xml":
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107 engine.setSearchUrlTemplate(url)
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108 engine.setSearchParameters(parameters)
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109 engine.setSearchMethod(method)
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110
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111 elif self.name() == "Image":
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112 engine.setImageUrl(self.readElementText())
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113
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114 if engine.name() and \
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115 engine.description() and \
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116 engine.suggestionsUrlTemplate() and \
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117 engine.searchUrlTemplate() and \
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118 engine.imageUrl():
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119 break
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120
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121 return engine

eric ide

mercurial