diff options
Diffstat (limited to 'src/xml/dom/qdomhelpers.cpp')
| -rw-r--r-- | src/xml/dom/qdomhelpers.cpp | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/src/xml/dom/qdomhelpers.cpp b/src/xml/dom/qdomhelpers.cpp index bda6f8ef87..9399ad3b9b 100644 --- a/src/xml/dom/qdomhelpers.cpp +++ b/src/xml/dom/qdomhelpers.cpp @@ -39,6 +39,7 @@ #include "qdomhelpers_p.h" #include "qdom_p.h" +#include "qxmlstream.h" #include "private/qxml_p.h" QT_BEGIN_NAMESPACE @@ -166,6 +167,18 @@ QDomBuilder::ErrorInfo QDomHandler::errorInfo() const * **************************************************************/ +int QDomDocumentLocator::column() const +{ + Q_ASSERT(reader); + return static_cast<int>(reader->columnNumber()); +} + +int QDomDocumentLocator::line() const +{ + Q_ASSERT(reader); + return static_cast<int>(reader->lineNumber()); +} + void QSAXDocumentLocator::setLocator(QXmlLocator *l) { locator = l; @@ -252,6 +265,44 @@ bool QDomBuilder::startElement(const QString &nsURI, const QString &qName, return true; } +inline QString stringRefToString(const QStringRef &stringRef) +{ + // Calling QStringRef::toString() on a NULL QStringRef in some cases returns + // an empty string (i.e. QString("")) instead of a NULL string (i.e. QString()). + // QDom implementation differentiates between NULL and empty strings, so + // we need this as workaround to keep the current behavior unchanged. + return stringRef.isNull() ? QString() : stringRef.toString(); +} + +bool QDomBuilder::startElement(const QString &nsURI, const QString &qName, + const QXmlStreamAttributes &atts) +{ + QDomNodePrivate *n = + nsProcessing ? doc->createElementNS(nsURI, qName) : doc->createElement(qName); + if (!n) + return false; + + n->setLocation(locator->line(), locator->column()); + + node->appendChild(n); + node = n; + + // attributes + for (const auto &attr : atts) { + auto domElement = static_cast<QDomElementPrivate *>(node); + if (nsProcessing) { + domElement->setAttributeNS(stringRefToString(attr.namespaceUri()), + stringRefToString(attr.qualifiedName()), + stringRefToString(attr.value())); + } else { + domElement->setAttribute(stringRefToString(attr.qualifiedName()), + stringRefToString(attr.value())); + } + } + + return true; +} + bool QDomBuilder::endElement() { if (!node || node == doc) @@ -368,4 +419,225 @@ bool QDomBuilder::notationDecl(const QString &name, const QString &publicId, return true; } +/************************************************************** + * + * QDomParser + * + **************************************************************/ + +QDomParser::QDomParser(QDomDocumentPrivate *d, QXmlStreamReader *r, bool namespaceProcessing) + : reader(r), locator(r), domBuilder(d, &locator, namespaceProcessing) +{ +} + +bool QDomParser::parse() +{ + return parseProlog() && parseBody(); +} + +QDomBuilder::ErrorInfo QDomParser::errorInfo() const +{ + return domBuilder.error(); +} + +bool QDomParser::parseProlog() +{ + Q_ASSERT(reader); + + bool foundDtd = false; + + while (!reader->atEnd()) { + reader->readNext(); + + if (reader->hasError()) { + domBuilder.fatalError(reader->errorString()); + return false; + } + + switch (reader->tokenType()) { + case QXmlStreamReader::StartDocument: + if (!reader->documentVersion().isEmpty()) { + QString value(QLatin1String("version='")); + value += reader->documentVersion(); + value += QLatin1Char('\''); + if (!reader->documentEncoding().isEmpty()) { + value += QLatin1String(" encoding='"); + value += reader->documentEncoding(); + value += QLatin1Char('\''); + } + if (reader->isStandaloneDocument()) { + value += QLatin1String(" standalone='yes'"); + } else { + // TODO: Add standalone='no', if 'standalone' is specified. With the current + // QXmlStreamReader there is no way to figure out if it was specified or not. + // QXmlStreamReader needs to be modified for handling that case correctly. + } + + if (!domBuilder.processingInstruction(QLatin1String("xml"), value)) { + domBuilder.fatalError( + QDomParser::tr("Error occurred while processing XML declaration")); + return false; + } + } + break; + case QXmlStreamReader::DTD: + if (foundDtd) { + domBuilder.fatalError(QDomParser::tr("Multiple DTD sections are not allowed")); + return false; + } + foundDtd = true; + + if (!domBuilder.startDTD(stringRefToString(reader->dtdName()), + stringRefToString(reader->dtdPublicId()), + stringRefToString(reader->dtdSystemId()))) { + domBuilder.fatalError( + QDomParser::tr("Error occurred while processing document type declaration")); + return false; + } + if (!parseMarkupDecl()) + return false; + break; + case QXmlStreamReader::Comment: + if (!domBuilder.comment(reader->text().toString())) { + domBuilder.fatalError(QDomParser::tr("Error occurred while processing comment")); + return false; + } + break; + case QXmlStreamReader::ProcessingInstruction: + if (!domBuilder.processingInstruction(reader->processingInstructionTarget().toString(), + reader->processingInstructionData().toString())) { + domBuilder.fatalError( + QDomParser::tr("Error occurred while processing a processing instruction")); + return false; + } + break; + default: + // If the token is none of the above, prolog processing is done. + return true; + } + } + + return true; +} + +bool QDomParser::parseBody() +{ + Q_ASSERT(reader); + + std::stack<QStringRef> tagStack; + while (!reader->atEnd() && !reader->hasError()) { + switch (reader->tokenType()) { + case QXmlStreamReader::StartElement: + tagStack.push(reader->qualifiedName()); + if (!domBuilder.startElement(stringRefToString(reader->namespaceUri()), + stringRefToString(reader->qualifiedName()), + reader->attributes())) { + domBuilder.fatalError( + QDomParser::tr("Error occurred while processing a start element")); + return false; + } + break; + case QXmlStreamReader::EndElement: + if (tagStack.empty() || reader->qualifiedName() != tagStack.top()) { + domBuilder.fatalError( + QDomParser::tr("Unexpected end element '%1'").arg(reader->name())); + return false; + } + tagStack.pop(); + if (!domBuilder.endElement()) { + domBuilder.fatalError( + QDomParser::tr("Error occurred while processing an end element")); + return false; + } + break; + case QXmlStreamReader::Characters: + if (!reader->isWhitespace()) { // Skip the content consisting of only whitespaces + if (!reader->text().toString().trimmed().isEmpty()) { + if (!domBuilder.characters(reader->text().toString(), reader->isCDATA())) { + domBuilder.fatalError(QDomParser::tr( + "Error occurred while processing the element content")); + return false; + } + } + } + break; + case QXmlStreamReader::Comment: + if (!domBuilder.comment(reader->text().toString())) { + domBuilder.fatalError(QDomParser::tr("Error occurred while processing comments")); + return false; + } + break; + case QXmlStreamReader::ProcessingInstruction: + if (!domBuilder.processingInstruction(reader->processingInstructionTarget().toString(), + reader->processingInstructionData().toString())) { + domBuilder.fatalError( + QDomParser::tr("Error occurred while processing a processing instruction")); + return false; + } + break; + case QXmlStreamReader::EntityReference: + if (!domBuilder.skippedEntity(reader->name().toString())) { + domBuilder.fatalError( + QDomParser::tr("Error occurred while processing an entity reference")); + return false; + } + break; + default: + domBuilder.fatalError(QDomParser::tr("Unexpected token")); + return false; + } + + reader->readNext(); + } + + if (reader->hasError()) { + domBuilder.fatalError(reader->errorString()); + reader->readNext(); + return false; + } + + if (!tagStack.empty()) { + domBuilder.fatalError(QDomParser::tr("Tag mismatch")); + return false; + } + + return true; +} + +bool QDomParser::parseMarkupDecl() +{ + Q_ASSERT(reader); + + const auto entities = reader->entityDeclarations(); + for (const auto &entityDecl : entities) { + // Entity declarations are created only for Extrenal Entities. Internal Entities + // are parsed, and QXmlStreamReader handles the parsing itself and returns the + // parsed result. So we don't need to do anything for the Internal Entities. + if (!entityDecl.publicId().isEmpty() || !entityDecl.systemId().isEmpty()) { + // External Entity + if (!domBuilder.unparsedEntityDecl(stringRefToString(entityDecl.name()), + stringRefToString(entityDecl.publicId()), + stringRefToString(entityDecl.systemId()), + stringRefToString(entityDecl.notationName()))) { + domBuilder.fatalError( + QDomParser::tr("Error occurred while processing entity declaration")); + return false; + } + } + } + + const auto notations = reader->notationDeclarations(); + for (const auto ¬ationDecl : notations) { + if (!domBuilder.notationDecl(stringRefToString(notationDecl.name()), + stringRefToString(notationDecl.publicId()), + stringRefToString(notationDecl.systemId()))) { + domBuilder.fatalError( + QDomParser::tr("Error occurred while processing notation declaration")); + return false; + } + } + + return true; +} + QT_END_NAMESPACE |