Helpviewer/OpenSearch/OpenSearchReader.py

Sun, 10 Feb 2013 18:31:31 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sun, 10 Feb 2013 18:31:31 +0100
changeset 2403
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parent 2302
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child 2525
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child 3022
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permissions
-rw-r--r--

Continued implementing the delayed import.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2009 - 2013 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 QXmlStreamReader, QIODevice, QCoreApplication
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11
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8cd4d08fa9f6 Made code mostly PEP 8 compliant (except all whitespace and line length).
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12
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13 class OpenSearchReader(QXmlStreamReader):
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14 """
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15 Class implementing a reader for open search engine descriptions.
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16 """
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17 def read(self, device):
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18 """
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19 Public method to read the description.
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20
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21 @param device device to read the description from (QIODevice)
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22 @return search engine object (OpenSearchEngine)
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23 """
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24 self.clear()
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25
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26 if not device.isOpen():
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27 device.open(QIODevice.ReadOnly)
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28
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29 self.setDevice(device)
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30 return self.__read()
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31
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32 def __read(self):
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33 """
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34 Private method to read and parse the description.
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35
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36 @return search engine object (OpenSearchEngine)
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37 """
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38 from .OpenSearchEngine import OpenSearchEngine
0
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39 engine = OpenSearchEngine()
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40
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41 while not self.isStartElement() and not self.atEnd():
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42 self.readNext()
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43
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44 if self.name() != "OpenSearchDescription" or \
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45 self.namespaceUri() != "http://a9.com/-/spec/opensearch/1.1/":
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46 self.raiseError(QCoreApplication.translate("OpenSearchReader",
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47 "The file is not an OpenSearch 1.1 file."))
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48 return engine
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49
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50 while not self.atEnd():
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51 self.readNext()
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52
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53 if not self.isStartElement():
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54 continue
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55
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56 if self.name() == "ShortName":
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57 engine.setName(self.readElementText())
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58
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59 elif self.name() == "Description":
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60 engine.setDescription(self.readElementText())
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61
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62 elif self.name() == "Url":
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63 type_ = self.attributes().value("type")
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64 url = self.attributes().value("template")
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65 method = self.attributes().value("method")
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66
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67 if type_ == "application/x-suggestions+json" and \
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68 engine.suggestionsUrlTemplate():
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69 continue
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70
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71 if (not type_ or \
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72 type_ == "text/html" or \
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73 type_ == "application/xhtml+xml") and \
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74 engine.suggestionsUrlTemplate():
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75 continue
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76
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77 if not url:
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78 continue
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79
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80 parameters = []
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81
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82 self.readNext()
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83
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84 while not (self.isEndElement() and self.name() == "Url"):
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85 if not self.isStartElement() or \
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86 (self.name() != "Param" and self.name() != "Parameter"):
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87 self.readNext()
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88 continue
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89
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90 key = self.attributes().value("name")
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91 value = self.attributes().value("value")
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92
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93 if key and value:
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94 parameters.append((key, value))
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95
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96 while not self.isEndElement():
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97 self.readNext()
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98
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99 if type_ == "application/x-suggestions+json":
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100 engine.setSuggestionsUrlTemplate(url)
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101 engine.setSuggestionsParameters(parameters)
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102 engine.setSuggestionsMethod(method)
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103 elif not type_ or \
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104 type_ == "text/html" or \
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105 type_ == "application/xhtml+xml":
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106 engine.setSearchUrlTemplate(url)
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107 engine.setSearchParameters(parameters)
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108 engine.setSearchMethod(method)
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109
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110 elif self.name() == "Image":
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111 engine.setImageUrl(self.readElementText())
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112
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113 if engine.name() and \
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114 engine.description() and \
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115 engine.suggestionsUrlTemplate() and \
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116 engine.searchUrlTemplate() and \
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117 engine.imageUrl():
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118 break
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119
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120 return engine

eric ide

mercurial