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Diffstat (limited to 'qtinterface/qt4/Qt/qstringbuilder.h')
| -rw-r--r-- | qtinterface/qt4/Qt/qstringbuilder.h | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/qtinterface/qt4/Qt/qstringbuilder.h b/qtinterface/qt4/Qt/qstringbuilder.h new file mode 100644 index 0000000..2e9fe81 --- /dev/null +++ b/qtinterface/qt4/Qt/qstringbuilder.h @@ -0,0 +1,287 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation ([email protected]) +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial Usage +** Licensees holding valid Qt Commercial licenses may use this file in +** accordance with the Qt Commercial License Agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Nokia. +** +** 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 1.1, 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 have questions regarding the use of this file, please contact +** Nokia at [email protected]. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QSTRINGBUILDER_H +#define QSTRINGBUILDER_H + +#include <QtCore/qstring.h> + +#if defined(Q_CC_GNU) && !defined(Q_CC_INTEL) +# if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ == 0) +# include <QtCore/qmap.h> +# endif +#endif + +#include <string.h> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +QT_MODULE(Core) + +// ### Qt 5: merge with QLatin1String +class QLatin1Literal +{ +public: + int size() const { return m_size; } + const char *data() const { return m_data; } + + template <int N> + QLatin1Literal(const char (&str)[N]) + : m_size(N - 1), m_data(str) {} + +private: + const int m_size; + const char *m_data; +}; + +struct Q_CORE_EXPORT QAbstractConcatenable +{ +protected: + static void convertFromAscii(const char *a, int len, QChar *&out); + + static inline void convertFromAscii(char a, QChar *&out) + { +#ifndef QT_NO_TEXTCODEC + if (QString::codecForCStrings) + *out++ = QChar::fromAscii(a); + else +#endif + *out++ = QLatin1Char(a); + } +}; + +template <typename T> struct QConcatenable {}; + +template <typename A, typename B> +class QStringBuilder +{ +public: + QStringBuilder(const A &a_, const B &b_) : a(a_), b(b_) {} + + operator QString() const + { + QString s(QConcatenable< QStringBuilder<A, B> >::size(*this), + Qt::Uninitialized); + + QChar *d = s.data(); + QConcatenable< QStringBuilder<A, B> >::appendTo(*this, d); + // this resize is necessary since we allocate a bit too much + // when dealing with variable sized 8-bit encodings + s.resize(d - s.data()); + return s; + } + QByteArray toLatin1() const { return QString(*this).toLatin1(); } + + const A &a; + const B &b; +}; + + +template <> struct QConcatenable<char> : private QAbstractConcatenable +{ + typedef char type; + static int size(const char) { return 1; } + static inline void appendTo(const char c, QChar *&out) + { + QAbstractConcatenable::convertFromAscii(c, out); + } +}; + +template <> struct QConcatenable<QLatin1Char> +{ + typedef QLatin1Char type; + static int size(const QLatin1Char) { return 1; } + static inline void appendTo(const QLatin1Char c, QChar *&out) + { + *out++ = c; + } +}; + +template <> struct QConcatenable<QChar> +{ + typedef QChar type; + static int size(const QChar) { return 1; } + static inline void appendTo(const QChar c, QChar *&out) + { + *out++ = c; + } +}; + +template <> struct QConcatenable<QCharRef> +{ + typedef QCharRef type; + static int size(const QCharRef &) { return 1; } + static inline void appendTo(const QCharRef &c, QChar *&out) + { + *out++ = QChar(c); + } +}; + +template <> struct QConcatenable<QLatin1String> +{ + typedef QLatin1String type; + static int size(const QLatin1String &a) { return qstrlen(a.latin1()); } + static inline void appendTo(const QLatin1String &a, QChar *&out) + { + for (const char *s = a.latin1(); *s; ) + *out++ = QLatin1Char(*s++); + } + +}; + +template <> struct QConcatenable<QLatin1Literal> +{ + typedef QLatin1Literal type; + static int size(const QLatin1Literal &a) { return a.size(); } + static inline void appendTo(const QLatin1Literal &a, QChar *&out) + { + for (const char *s = a.data(); *s; ) + *out++ = QLatin1Char(*s++); + } +}; + +template <> struct QConcatenable<QString> +{ + typedef QString type; + static int size(const QString &a) { return a.size(); } + static inline void appendTo(const QString &a, QChar *&out) + { + const int n = a.size(); + memcpy(out, reinterpret_cast<const char*>(a.constData()), sizeof(QChar) * n); + out += n; + } +}; + +template <> struct QConcatenable<QStringRef> +{ + typedef QStringRef type; + static int size(const QStringRef &a) { return a.size(); } + static inline void appendTo(QStringRef a, QChar *&out) + { + const int n = a.size(); + memcpy(out, reinterpret_cast<const char*>(a.constData()), sizeof(QChar) * n); + out += n; + } +}; + +#ifndef QT_NO_CAST_FROM_ASCII +template <int N> struct QConcatenable<char[N]> : private QAbstractConcatenable +{ + typedef char type[N]; + static int size(const char[N]) + { + return N - 1; + } + static inline void appendTo(const char a[N], QChar *&out) + { + QAbstractConcatenable::convertFromAscii(a, N, out); + } +}; + +template <int N> struct QConcatenable<const char[N]> : private QAbstractConcatenable +{ + typedef const char type[N]; + static int size(const char[N]) { return N - 1; } + static inline void appendTo(const char a[N], QChar *&out) + { + QAbstractConcatenable::convertFromAscii(a, N, out); + } +}; + +template <> struct QConcatenable<const char *> : private QAbstractConcatenable +{ + typedef char const *type; + static int size(const char *a) { return qstrlen(a); } + static inline void appendTo(const char *a, QChar *&out) + { + QAbstractConcatenable::convertFromAscii(a, -1, out); + } +}; + +template <> struct QConcatenable<QByteArray> : private QAbstractConcatenable +{ + typedef QByteArray type; + static int size(const QByteArray &ba) { return qstrnlen(ba.constData(), ba.size()); } + static inline void appendTo(const QByteArray &ba, QChar *&out) + { + QAbstractConcatenable::convertFromAscii(ba.constData(), -1, out); + } +}; +#endif + +template <typename A, typename B> +struct QConcatenable< QStringBuilder<A, B> > +{ + typedef QStringBuilder<A, B> type; + static int size(const type &p) + { + return QConcatenable<A>::size(p.a) + QConcatenable<B>::size(p.b); + } + static inline void appendTo(const QStringBuilder<A, B> &p, QChar *&out) + { + QConcatenable<A>::appendTo(p.a, out); + QConcatenable<B>::appendTo(p.b, out); + } +}; + +template <typename A, typename B> +QStringBuilder<typename QConcatenable<A>::type, typename QConcatenable<B>::type> +operator%(const A &a, const B &b) +{ + return QStringBuilder<typename QConcatenable<A>::type, typename QConcatenable<B>::type>(a, b); +} + +#ifdef QT_USE_FAST_OPERATOR_PLUS +template <typename A, typename B> +QStringBuilder<typename QConcatenable<A>::type, typename QConcatenable<B>::type> +operator+(const A &a, const B &b) +{ + return QStringBuilder<typename QConcatenable<A>::type, typename QConcatenable<B>::type>(a, b); +} +#endif + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif // QSTRINGBUILDER_H |