Long live Qt 4.5!

1 files changed, 386 insertions, 0 deletions

diff --git a/tools/xmlpatterns/main.cpp b/tools/xmlpatterns/main.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the Patternist project on Trolltech Labs.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/QDir>
+#include <QtCore/QtDebug>
+#include <QtCore/QFile>
+#include <QtCore/QFileInfo>
+#include <QtCore/QStringList>
+#include <QtCore/QTextCodec>
+#include <QtCore/QTextStream>
+#include <QtCore/QUrl>
+#include <QtCore/QVariant>
+#include <QtCore/QVector>
+
+#include <QtXmlPatterns/QXmlFormatter>
+#include <QtXmlPatterns/QXmlItem>
+#include <QtXmlPatterns/QXmlQuery>
+#include <QtXmlPatterns/QXmlSerializer>
+
+#include "private/qautoptr_p.h"
+#include "qapplicationargument_p.h"
+#include "qapplicationargumentparser_p.h"
+#include "qcoloringmessagehandler_p.h"
+
+#if defined(Q_OS_WIN) && !defined(Q_OS_WINCE)
+/* Needed for opening stdout with _fdopen & friends. io.h seems to not be
+ * needed on MinGW though. */
+#include <io.h>
+#include <fcntl.h>
+#endif
+
+#include "main.h"
+
+QT_USE_NAMESPACE
+
+/* The two Q_DECLARE_METATYPE macros must appear before the code
+ * on a couple of HPUX platforms. */
+
+/*!
+ \internal
+ \since 4.4
+ Represents the name and value found in "-param name=value".
+ */
+typedef QPair<QString, QString> Parameter;
+Q_DECLARE_METATYPE(Parameter);
+
+/*!
+ \internal
+ \since 4.4
+ For the -output switch.
+ */
+Q_DECLARE_METATYPE(QIODevice *);
+
+/*!
+ \class PatternistApplicationParser
+ \brief Subclass to handle -param name=value
+ \internal
+ \since 4.4
+ \reentrant
+ */
+class PatternistApplicationParser : public QApplicationArgumentParser
+{
+public:
+    inline PatternistApplicationParser(int argc, char **argv,
+                                       const QXmlNamePool &np) : QApplicationArgumentParser(argc, argv)
+                                                               , m_namePool(np)
+#ifdef Q_OS_WIN
+                                                               , m_stdout(0)
+#endif
+    {
+    }
+
+#ifdef Q_OS_WIN
+    virtual ~PatternistApplicationParser()
+    {
+        /* QFile::~QFile() nor QFile::close() frees the handle when
+         * we use QFile::open() so we have to do it manually.
+         *
+         * "If stream is NULL, the invalid parameter handler is invoked," so
+         * lets try to avoid that. */
+        if(m_stdout)
+            fclose(m_stdout);
+    }
+#endif
+
+protected:
+    virtual QVariant convertToValue(const QApplicationArgument &arg,
+                                    const QString &input) const
+    {
+        if(arg.name() == QLatin1String("param"))
+        {
+            const int assign = input.indexOf(QLatin1Char('='));
+
+            if(assign == -1)
+            {
+                message(QXmlPatternistCLI::tr("Each binding must contain an equal sign."));
+                return QVariant();
+            }
+
+            const QString name(input.left(assign));
+            const QString value(input.mid(assign + 1));
+
+            if(!QXmlName::isNCName(name))
+            {
+                message(QXmlPatternistCLI::tr("The variable name must be a valid NCName, which %1 isn't.").arg(name));
+                return QVariant();
+            }
+
+            /* The value.isNull() check ensures we can bind variables whose value is an empty string. */
+            return qVariantFromValue(Parameter(name, value.isNull() ? QString(QLatin1String("")) : value ));
+        }
+        else if(arg.name() == QLatin1String("output"))
+        {
+            QFile *const f = new QFile(input);
+
+            if(f->open(QIODevice::WriteOnly))
+                return qVariantFromValue(static_cast<QIODevice *>(f));
+            else
+            {
+                message(QXmlPatternistCLI::tr("Failed to open file %1 for writing: %2").arg(f->fileName(), f->errorString()));
+                return QVariant();
+            }
+        }
+        else if(arg.name() == QLatin1String("initial-template"))
+        {
+            const QXmlName name(QXmlName::fromClarkName(input, m_namePool));
+            if(name.isNull())
+            {
+                message(QXmlPatternistCLI::tr("%1 is an invalid Clark Name").arg(input));
+                return QVariant();
+            }
+            else
+                return qVariantFromValue(name);
+        }
+        else
+            return QApplicationArgumentParser::convertToValue(arg, input);
+    }
+
+    virtual QString typeToName(const QApplicationArgument &argument) const
+    {
+        if(argument.name() == QLatin1String("param"))
+            return QLatin1String("name=value");
+        else if(argument.name() == QLatin1String("output"))
+            return QLatin1String("local file");
+        else
+            return QApplicationArgumentParser::typeToName(argument);
+    }
+
+    virtual QVariant defaultValue(const QApplicationArgument &argument) const
+    {
+        if(argument.name() == QLatin1String("output"))
+        {
+            QFile *const out = new QFile();
+
+#ifdef Q_OS_WIN
+            /* If we don't open stdout in "binary" mode on Windows, it will translate
+             * 0xA into 0xD 0xA. See Trolltech task 173619, for an example. */
+            _setmode(_fileno(stdout), _O_BINARY);
+            m_stdout = QT_WA_INLINE(_wfdopen(_fileno(stdout), L"wb"),_fdopen(_fileno(stdout), "wb"));
+            out->open(m_stdout, QIODevice::WriteOnly);
+#else
+            out->open(stdout, QIODevice::WriteOnly);
+#endif
+
+            return qVariantFromValue(static_cast<QIODevice *>(out));
+        }
+        else
+            return QApplicationArgumentParser::defaultValue(argument);
+    }
+
+private:
+    QXmlNamePool    m_namePool;
+#ifdef Q_OS_WIN
+    mutable FILE *  m_stdout;
+#endif
+};
+
+static inline QUrl finalizeURI(const QApplicationArgumentParser &parser,
+                               const QApplicationArgument &isURI,
+                               const QApplicationArgument &arg)
+{
+    QUrl userURI;
+    {
+        const QString stringURI(parser.value(arg).toString());
+
+        if(parser.has(isURI))
+            userURI = QUrl::fromEncoded(stringURI.toLatin1());
+        else
+            userURI = QUrl::fromLocalFile(stringURI);
+    }
+
+    return QUrl::fromLocalFile(QDir::current().absolutePath() + QLatin1Char('/')).resolved(userURI);
+}
+
+int main(int argc, char **argv)
+{
+    enum ExitCode
+    {
+        /**
+         * We start from 2, because QApplicationArgumentParser
+         * uses 1.
+         */
+        QueryFailure = 2,
+        StdOutFailure
+    };
+
+    const QCoreApplication app(argc, argv);
+    QCoreApplication::setApplicationName(QLatin1String("xmlpatterns"));
+
+    QXmlNamePool namePool;
+    PatternistApplicationParser parser(argc, argv, namePool);
+    parser.setApplicationDescription(QLatin1String("A tool for running XQuery queries."));
+    parser.setApplicationVersion(QLatin1String("0.1"));
+
+    QApplicationArgument param(QLatin1String("param"),
+                               QXmlPatternistCLI::tr("Binds an external variable. The value is directly available using the variable reference: $name."),
+                               qMetaTypeId<Parameter>());
+    param.setMaximumOccurrence(-1);
+    parser.addArgument(param);
+
+    const QApplicationArgument noformat(QLatin1String("no-format"),
+                                        QXmlPatternistCLI::tr("By default output is formatted for readability. When specified, strict serialization is performed."));
+    parser.addArgument(noformat);
+
+    const QApplicationArgument isURI(QLatin1String("is-uri"),
+                                     QXmlPatternistCLI::tr("If specified, all filenames on the command line are interpreted as URIs instead of a local filenames."));
+    parser.addArgument(isURI);
+
+    const QApplicationArgument initialTemplateName(QLatin1String("initial-template"),
+                                                   QXmlPatternistCLI::tr("The name of the initial template to call as a Clark Name."),
+                                                   QVariant::String);
+    parser.addArgument(initialTemplateName);
+
+    /* The temporary object is required to compile with g++ 3.3. */
+    QApplicationArgument queryURI = QApplicationArgument(QLatin1String("query/stylesheet"),
+                                                         QXmlPatternistCLI::tr("A local filename pointing to the query to run. If the name ends with .xsl it's assumed "
+                                                                               "to be an XSL-T stylesheet. If it ends with .xq, it's assumed to be an XQuery query. (In "
+                                                                               "other cases it's also assumed to be an XQuery query, but that interpretation may "
+                                                                               "change in a future release of Qt.)"),
+                                                         QVariant::String);
+    queryURI.setMinimumOccurrence(1);
+    queryURI.setNameless(true);
+    parser.addArgument(queryURI);
+
+    QApplicationArgument focus = QApplicationArgument(QLatin1String("focus"),
+                                                      QXmlPatternistCLI::tr("The document to use as focus. Mandatory "
+                                                                            "in case a stylesheet is used. This option is "
+                                                                            "also affected by the is-uris option."),
+                                                      QVariant::String);
+    focus.setMinimumOccurrence(0);
+    focus.setNameless(true);
+    parser.addArgument(focus);
+
+    QApplicationArgument output(QLatin1String("output"),
+                                QXmlPatternistCLI::tr("A local file to which the output should be written. "
+                                                      "The file is overwritten, or if not exist, created. "
+                                                      "If absent, stdout is used."),
+                                qMetaTypeId<QIODevice *>());
+    parser.addArgument(output);
+
+    if(!parser.parse())
+        return parser.exitCode();
+
+    /* Get the query URI. */
+    const QUrl effectiveURI(finalizeURI(parser, isURI, queryURI));
+
+    QXmlQuery::QueryLanguage lang;
+
+    if(effectiveURI.toString().endsWith(QLatin1String(".xsl")))
+         lang = QXmlQuery::XSLT20;
+    else
+         lang = QXmlQuery::XQuery10;
+
+    if(lang == QXmlQuery::XQuery10 && parser.has(initialTemplateName))
+    {
+        parser.message(QXmlPatternistCLI::tr("An initial template name cannot be specified when running an XQuery."));
+        return QApplicationArgumentParser::ParseError;
+    }
+
+    QXmlQuery query(lang, namePool);
+
+    query.setInitialTemplateName(qVariantValue<QXmlName>(parser.value(initialTemplateName)));
+
+    /* Bind external variables. */
+    {
+        const QVariantList parameters(parser.values(param));
+        const int len = parameters.count();
+
+        /* For tracking duplicates. */
+        QSet<QString> usedParameters;
+
+        for(int i = 0; i < len; ++i)
+        {
+            const Parameter p(qVariantValue<Parameter>(parameters.at(i)));
+
+            if(usedParameters.contains(p.first))
+            {
+                parser.message(QXmlPatternistCLI::tr("Each parameter must be unique, %1 is specified at least twice.").arg(p.first));
+                return QApplicationArgumentParser::ParseError;
+            }
+            else
+            {
+                usedParameters.insert(p.first);
+                query.bindVariable(p.first, QXmlItem(p.second));
+            }
+        }
+    }
+
+    if(parser.has(focus))
+    {
+        if(!query.setFocus(finalizeURI(parser, isURI, focus)))
+            return QueryFailure;
+    }
+    else if(lang == QXmlQuery::XSLT20 && !parser.has(initialTemplateName))
+    {
+        parser.message(QXmlPatternistCLI::tr("When a stylesheet is used, a "
+                                             "document must be specified as a focus, or an "
+                                             "initial template name must be specified, or both."));
+        return QApplicationArgumentParser::ParseError;
+    }
+
+    query.setQuery(effectiveURI);
+
+    const QPatternist::AutoPtr<QIODevice> outDevice(qVariantValue<QIODevice *>(parser.value(output)));
+    Q_ASSERT(outDevice);
+    Q_ASSERT(outDevice->isWritable());
+
+    if(query.isValid())
+    {
+        typedef QPatternist::AutoPtr<QAbstractXmlReceiver> RecPtr;
+        RecPtr receiver;
+
+        if(parser.has(noformat))
+            receiver = RecPtr(new QXmlSerializer(query, outDevice.data()));
+        else
+            receiver = RecPtr(new QXmlFormatter(query, outDevice.data()));
+
+        const bool success = query.evaluateTo(receiver.data());
+
+        if(success)
+            return parser.exitCode();
+        else
+            return QueryFailure;
+    }
+    else
+        return QueryFailure;
+}
+