Mercurial Repositories > eric / file comparison
comparison: Helpviewer/OpenSearch/OpenSearchReader.py
Helpviewer/OpenSearch/OpenSearchReader.py
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| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2009 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing a reader for open search engine descriptions. | |
| 8 """ | |
| 9 | |
| 10 from PyQt4.QtCore import * | |
| 11 | |
| 12 from OpenSearchEngine import OpenSearchEngine | |
| 13 | |
| 14 class OpenSearchReader(QXmlStreamReader): | |
| 15 """ | |
| 16 Class implementing a reader for open search engine descriptions. | |
| 17 """ | |
| 18 def read(self, device): | |
| 19 """ | |
| 20 Public method to read the description. | |
| 21 | |
| 22 @param device device to read the description from (QIODevice) | |
| 23 @return search engine object (OpenSearchEngine) | |
| 24 """ | |
| 25 self.clear() | |
| 26 | |
| 27 if not device.isOpen(): | |
| 28 device.open(QIODevice.ReadOnly) | |
| 29 | |
| 30 self.setDevice(device) | |
| 31 return self.__read() | |
| 32 | |
| 33 def __read(self): | |
| 34 """ | |
| 35 Private method to read and parse the description. | |
| 36 | |
| 37 @return search engine object (OpenSearchEngine) | |
| 38 """ | |
| 39 engine = OpenSearchEngine() | |
| 40 | |
| 41 while not self.isStartElement() and not self.atEnd(): | |
| 42 self.readNext() | |
| 43 | |
| 44 if self.name() != "OpenSearchDescription" or \ | |
| 45 self.namespaceUri() != "http://a9.com/-/spec/opensearch/1.1/": | |
| 46 self.raiseError(QCoreApplication.translate("OpenSearchReader", | |
| 47 "The file is not an OpenSearch 1.1 file.")) | |
| 48 return engine | |
| 49 | |
| 50 while not self.atEnd(): | |
| 51 self.readNext() | |
| 52 | |
| 53 if not self.isStartElement(): | |
| 54 continue | |
| 55 | |
| 56 if self.name() == "ShortName": | |
| 57 engine.setName(self.readElementText()) | |
| 58 | |
| 59 elif self.name() == "Description": | |
| 60 engine.setDescription(self.readElementText()) | |
| 61 | |
| 62 elif self.name() == "Url": | |
| 63 type_ = self.attributes().value("type") | |
| 64 url = self.attributes().value("template") | |
| 65 method = self.attributes().value("method") | |
| 66 | |
| 67 if type_ == "application/x-suggestions+json" and \ | |
| 68 engine.suggestionsUrlTemplate(): | |
| 69 continue | |
| 70 | |
| 71 if (not type_ or \ | |
| 72 type_ == "text/html" or \ | |
| 73 type_ == "application/xhtml+xml") and \ | |
| 74 engine.suggestionsUrlTemplate(): | |
| 75 continue | |
| 76 | |
| 77 if not url: | |
| 78 continue | |
| 79 | |
| 80 parameters = [] | |
| 81 | |
| 82 self.readNext() | |
| 83 | |
| 84 while not (self.isEndElement() and self.name() == "Url"): | |
| 85 if not self.isStartElement() or \ | |
| 86 (self.name() != "Param" and self.name() != "Parameter"): | |
| 87 self.readNext() | |
| 88 continue | |
| 89 | |
| 90 key = self.attributes().value("name") | |
| 91 value = self.attributes().value("value") | |
| 92 | |
| 93 if key and value: | |
| 94 parameters.append((key, value)) | |
| 95 | |
| 96 while not self.isEndElement(): | |
| 97 self.readNext() | |
| 98 | |
| 99 if type_ == "application/x-suggestions+json": | |
| 100 engine.setSuggestionsUrlTemplate(url) | |
| 101 engine.setSuggestionsParameters(parameters) | |
| 102 engine.setSuggestionsMethod(method) | |
| 103 elif not type_ or \ | |
| 104 type_ == "text/html" or \ | |
| 105 type_ == "application/xhtml+xml": | |
| 106 engine.setSearchUrlTemplate(url) | |
| 107 engine.setSearchParameters(parameters) | |
| 108 engine.setSearchMethod(method) | |
| 109 | |
| 110 elif self.name() == "Image": | |
| 111 engine.setImageUrl(self.readElementText()) | |
| 112 | |
| 113 | |
| 114 if engine.name() and \ | |
| 115 engine.description() and \ | |
| 116 engine.suggestionsUrlTemplate() and \ | |
| 117 engine.searchUrlTemplate() and \ | |
| 118 engine.imageUrl(): | |
| 119 break | |
| 120 | |
| 121 return engine |
