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41
42 #include <QCoreApplication>
43 #include <QFile>
44 #include <QtDebug>
45 #include <QXmlResultItems>
46 #include <QXmlNamePool>
47
48 #include "Global.h"
49
50 #include "qcommonsequencetypes_p.h"
51 #include "qdebug_p.h"
52 #include "qatomicstring_p.h"
53
54 #include "ExternalSourceLoader.h"
55
56 using namespace QPatternistSDK;
57 using namespace QPatternist;
58
ExternalSourceLoader(const VariableMap & varMap,const QPatternist::ResourceLoader::Ptr & r)59 ExternalSourceLoader::ExternalSourceLoader(const VariableMap &varMap,
60 const QPatternist::ResourceLoader::Ptr &r) : m_variableMap(varMap)
61 , m_resourceLoader(r)
62 , m_query(Global::namePoolAsPublic())
63 {
64 Q_ASSERT(m_resourceLoader);
65 }
66
67 QPatternist::SequenceType::Ptr
announceExternalVariable(const QXmlName name,const QPatternist::SequenceType::Ptr & declaredType)68 ExternalSourceLoader::announceExternalVariable(const QXmlName name,
69 const QPatternist::SequenceType::Ptr &declaredType)
70 {
71 pDebug() << "ExternalSourceLoader::announceExternalVariable()";
72 Q_ASSERT(!name.isNull());
73 Q_ASSERT(declaredType);
74 Q_UNUSED(declaredType); /* Needed when bulding in release mode. */
75
76 if(name.namespaceURI() == QPatternist::StandardNamespaces::empty)
77 {
78 const VariableValue variable(m_variableMap.value(Global::namePool()->stringForLocalName(name.localName())));
79
80 if(variable.first.isEmpty())
81 return QPatternist::SequenceType::Ptr();
82 else
83 {
84 /* If announceDocument() can't load a document for uriForVar, it will return
85 * null, which we will too, which is fine, since we can't supply a value for
86 * this variable then. */
87 if(variable.second == Document)
88 return m_resourceLoader->announceDocument(variable.first, QPatternist::ResourceLoader::WillUse);
89 else if(variable.second == URI)
90 {
91 return QPatternist::CommonSequenceTypes::ExactlyOneString;
92 }
93 else
94 {
95 /* The type is Query, and we don't pre-load
96 * them. No particular reason, just not worth it. */
97 return QPatternist::CommonSequenceTypes::ZeroOrMoreItems;
98 }
99 }
100 }
101 else
102 return QPatternist::SequenceType::Ptr();
103 }
104
105 QPatternist::Item
evaluateSingleton(const QXmlName name,const QPatternist::DynamicContext::Ptr & context)106 ExternalSourceLoader::evaluateSingleton(const QXmlName name,
107 const QPatternist::DynamicContext::Ptr &context)
108 {
109 Q_ASSERT(!name.isNull());
110 const VariableValue variable(m_variableMap.value(Global::namePool()->stringForLocalName(name.localName())));
111
112 if(variable.second == Document)
113 {
114 Q_ASSERT_X(QFile::exists(variable.first.toLocalFile()), Q_FUNC_INFO,
115 qPrintable(QString::fromLatin1("The file %1 doesn't exist").arg(variable.first.toLocalFile())));
116 Q_ASSERT_X(m_resourceLoader->openDocument(variable.first, context), Q_FUNC_INFO,
117 "We're supposed to have the value. If not, an error should have been issued at query compile time.");
118
119 return m_resourceLoader->openDocument(variable.first, context);
120 }
121 else if(variable.second == Query)
122 {
123 /* Well, here we open the file and execute it. */
124 m_query.setQuery(QUrl::fromLocalFile(variable.first.toLocalFile()));
125 Q_ASSERT(m_query.isValid());
126
127 QXmlResultItems result;
128 m_query.evaluateTo(&result);
129
130 return QPatternist::Item::fromPublic(result.next());
131 }
132 else
133 {
134 Q_ASSERT(variable.second == URI);
135 return QPatternist::AtomicString::fromValue(variable.first.toString());
136 }
137 }
138
139 // vim: et:ts=4:sw=4:sts=4
140
141