ICU code page conversion support

Use ICU to do code page conversion instead of the
builtin text codecs. With this QTextCodec simply
becomes a wrapper around ICU's ucnv_* methods.

We only keep our own codecs for UTF-*, ISO-8859-1,
ISO-8859-15 for performance reasons, and for TSCII
and iscii-* because they aren't supported by ICU.

Change-Id: I4fc49eba55cf772b9772c6dac606a47a44346a60
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 91 insertions, 0 deletions

diff --git a/src/corelib/codecs/qicucodec_p.h b/src/corelib/codecs/qicucodec_p.h
new file mode 100644
index 0000000000..5f30eac3cc
--- /dev/null
+++ b/src/corelib/codecs/qicucodec_p.h
@@ -0,0 +1,91 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QICUCODEC_P_H
+#define QICUCODEC_P_H
+
+#include "QtCore/qtextcodec.h"
+
+//
+//  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.
+//
+
+extern "C" {
+    typedef struct UConverter UConverter;
+}
+
+QT_BEGIN_NAMESPACE
+
+class QIcuCodec : public QTextCodec
+{
+public:
+    static QList<QByteArray> availableCodecs();
+    static QList<int> availableMibs();
+
+    static QTextCodec *codecForName(const char *name);
+    static QTextCodec *codecForMib(int mib);
+
+    QString convertToUnicode(const char *, int, ConverterState *) const;
+    QByteArray convertFromUnicode(const QChar *, int, ConverterState *) const;
+
+    QByteArray name() const;
+    QList<QByteArray> aliases() const;
+    int mibEnum() const;
+
+private:
+    QIcuCodec(const char *name);
+    ~QIcuCodec();
+
+    UConverter *getConverter(QTextCodec::ConverterState *state) const;
+
+    const char *m_name;
+};
+
+QT_END_NAMESPACE
+
+#endif