diff options
author | Hugo Lima <hugo.lima@openbossa.org> | 2009-08-17 17:32:08 -0300 |
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committer | Hugo Lima <hugo.lima@openbossa.org> | 2009-08-17 17:32:08 -0300 |
commit | 9732e0c744e45a67094fc6ce08bdadb1f9a08d4a (patch) | |
tree | 566e389f406515b040317bffa075f4e5021020f7 /docparser.cpp |
The genesis...
Diffstat (limited to 'docparser.cpp')
-rw-r--r-- | docparser.cpp | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/docparser.cpp b/docparser.cpp new file mode 100644 index 000000000..ddff5ffe9 --- /dev/null +++ b/docparser.cpp @@ -0,0 +1,152 @@ +/* + * This file is part of the API Extractor project. + * + * Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). + * + * Contact: PySide team <contact@pyside.org> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ +#include "docparser.h" +#include <QtCore/QDebug> +#include <QtXmlPatterns/QXmlQuery> +#include <QBuffer> + +#include <cstdlib> +#include <libxslt/xsltutils.h> +#include <libxslt/transform.h> + +DocParser::DocParser() +{ + xmlSubstituteEntitiesDefault(1); +} + +DocParser::~DocParser() +{ +} + +QString DocParser::getDocumentation(QXmlQuery& xquery, const QString& query, + const DocModificationList& mods) const +{ + QString doc = execXQuery(xquery, query); + return applyDocModifications(mods, doc); +} + +QString DocParser::execXQuery(QXmlQuery& xquery, const QString& query) const +{ + QString escapedQuery(query); + // XQuery can't have invalid XML characters + escapedQuery.replace("&", "&").replace("<", "<"); + xquery.setQuery(escapedQuery); + if (!xquery.isValid()) { + qWarning() << "Bad XQuery: " << escapedQuery; + return QString(); + } + + QString result; + xquery.evaluateTo(&result); + return result; +} + +namespace +{ + +struct XslResources +{ + xmlDocPtr xmlDoc; + xsltStylesheetPtr xslt; + xmlDocPtr xslResult; + + XslResources() : xmlDoc(0), xslt(0), xslResult(0) {} + + ~XslResources() + { + if (xslt) + xsltFreeStylesheet(xslt); + + if (xslResult) + xmlFreeDoc(xslResult); + + if (xmlDoc) + xmlFreeDoc(xmlDoc); + + xsltCleanupGlobals(); + xmlCleanupParser(); + } +}; + +} // namespace + +QString DocParser::applyDocModifications(const DocModificationList& mods, const QString& xml) const +{ + if (mods.isEmpty()) + return xml; + + QString xsl = QLatin1String("<xsl:transform version=\"1.0\" xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\">\n" + "<xsl:template match=\"/\">\n" + " <xsl:apply-templates />\n" + "</xsl:template>\n" + "<xsl:template match=\"*\">\n" + "<xsl:copy>\n" + " <xsl:copy-of select=\"@*\"/>\n" + " <xsl:apply-templates/>\n" + "</xsl:copy>\n" + "</xsl:template>\n" + ); + foreach (DocModification mod, mods) { + if (mod.mode() == DocModification::XPathReplace) { + xsl += QLatin1String("<xsl:template match=\"") + + mod.xpath().replace("\"", """) + QLatin1String("\">") + + mod.code() + QLatin1String("</xsl:template>\n"); + } + } + xsl += QLatin1String("</xsl:transform>"); + + XslResources res; + // Read XML data + QByteArray xmlData = xml.toUtf8(); + res.xmlDoc = xmlParseMemory(xmlData.constData(), xmlData.size()); + if (!res.xmlDoc) + return xml; + + // Read XSL data as a XML file + QByteArray xslData = xsl.toUtf8(); + // xsltFreeStylesheet will delete this pointer + xmlDocPtr xslDoc = xmlParseMemory(xslData.constData(), xslData.size()); + if (!xslDoc) + return xml; + + // Parse XSL data + res.xslt = xsltParseStylesheetDoc(xslDoc); + if (!res.xslt) + return xml; + + // Apply XSL + res.xslResult = xsltApplyStylesheet(res.xslt, res.xmlDoc, 0); + xmlChar* buffer = 0; + int bufferSize; + QString result; + if (!xsltSaveResultToString(&buffer, &bufferSize, res.xslResult, res.xslt)) { + result = QByteArray(reinterpret_cast<char*>(buffer), bufferSize); + std::free(buffer); + } else { + result = xml; + } + + Q_ASSERT(result != xml); + return result; +} + |