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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
#ifndef Patternist_AnyURI_H
#define Patternist_AnyURI_H
#include <QUrl>
#include <QtDebug>
#include "qatomicstring_p.h"
#include "qbuiltintypes_p.h"
#include "qpatternistlocale_p.h"
#include "qreportcontext_p.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
namespace QPatternist
{
/**
* @short A value of type <tt>xs:anyURI</tt>.
*
* Due to bugs in QUrl and slight differences in behavior and
* interpretation, QUrl can never be used directly for dealing with URIs,
* values of type @c xs:anyURI. Therefore, it's important to use the
* functionality this class provides, such as the functions toQUrl(),
* fromLexical(), isValid(), and resolveURI().
*
* @see QUrl
* @author Frans Englich <frans.englich@nokia.com>
* @ingroup Patternist_xdm
*/
class AnyURI : public AtomicString
{
public:
typedef QExplicitlySharedDataPointer<AnyURI> Ptr;
/**
* Creates an instance representing @p value.
*
* @note @p value must be a valid @c xs:anyURI. If it is of interest
* to construct from a lexical representation, use fromLexical().
*/
static AnyURI::Ptr fromValue(const QString &value);
static AnyURI::Ptr fromValue(const QUrl &uri);
/**
* @short Treates @p value as a lexical representation of @c xs:anyURI
* but returns the value instance as a QUrl.
*
* If @p value is not a valid lexical representation of @c xs:anyURI,
* an error is issued via @p context.
*
* If @p isValid is passed, no error is raised and it is instead set
* appropriately.
*/
template<const ReportContext::ErrorCode code, typename TReportContext>
static inline QUrl toQUrl(const QString &value,
const TReportContext &context,
const SourceLocationReflection *const r,
bool *const isValid = 0,
const bool issueError = true)
{
/* QUrl doesn't flag ":/..." so we workaround it. */
const QString simplified(value.simplified());
const QUrl uri(simplified, QUrl::StrictMode);
if(uri.isEmpty() || (uri.isValid() && (!simplified.startsWith(QLatin1Char(':')) || !uri.isRelative())))
{
if(isValid)
*isValid = true;
return uri;
}
else
{
if(isValid)
*isValid = false;
if(issueError)
{
context->error(QtXmlPatterns::tr("%1 is not a valid value of type %2.").arg(formatURI(value), formatType(context->namePool(), BuiltinTypes::xsAnyURI)),
code, r);
}
return QUrl();
}
}
/**
* @short Return @c true if @p candidate is a valid @c xs:anyURI,
* otherwise @c false.
*/
static bool isValid(const QString &candidate);
/**
* @short Constructs a @c xs:anyURI value from the lexical representation @p value.
*
* If @p value is not a valid lexical representation of @c xs:anyURI,
* an error is issued via @p context.
*/
template<const ReportContext::ErrorCode code, typename TReportContext>
static inline AnyURI::Ptr fromLexical(const QString &value,
const TReportContext &context,
const SourceLocationReflection *const r)
{
return AnyURI::Ptr(new AnyURI(toQUrl<code>(value, context, r).toString()));
}
/**
* If @p value is not a valid lexical representation for @c xs:anyURI,
* a ValidationError is returned.
*/
static AnyURI::Ptr fromLexical(const QString &value);
/**
* Creates an AnyURI instance representing an absolute URI which
* is created from resolving @p relative against @p base.
*
* This function must be compatible with the resolution semantics
* specified for fn:resolve-uri. In fact, the implementation of fn:resolve-uri,
* ResourceURIFN, relies on this function.
*
* @see <a href="http://www.faqs.org/rfcs/rfc3986.html">RFC 3986 - Uniform
* Resource Identifier (URI): Generic Syntax</a>
* @see <a href ="http://www.w3.org/TR/xpath-functions/#func-resolve-uri">XQuery 1.0
* and XPath 2.0 Functions and Operators, 8.1 fn:resolve-uri</a>
*/
static AnyURI::Ptr resolveURI(const QString &relative,
const QString &base);
virtual ItemType::Ptr type() const;
/**
* @short Returns this @c xs:anyURI value in a QUrl.
*/
inline QUrl toQUrl() const
{
Q_ASSERT_X(QUrl(m_value).isValid(), Q_FUNC_INFO,
qPrintable(QString::fromLatin1("%1 is apparently not ok for QUrl.").arg(m_value)));
return QUrl(m_value);
}
protected:
friend class CommonValues;
AnyURI(const QString &value);
};
/**
* @short Formats @p uri, that's considered to be a URI, for display.
*/
static inline QString formatURI(const NamePool::Ptr &np, const QXmlName::NamespaceCode &uri)
{
return formatURI(np->stringForNamespace(uri));
}
}
QT_END_NAMESPACE
QT_END_HEADER
#endif
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