qt-creator/src/libs/utils/fileutils.h

/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (info@qt.nokia.com)
**
**
** 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.
**
** 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at info@qt.nokia.com.
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**************************************************************************/

#ifndef FILEUTILS_H
#define FILEUTILS_H

#include "utils_global.h"

#include <QtCore/QCoreApplication>
#include <QtCore/QIODevice>
#include <QtCore/QXmlStreamWriter> // Mac.

QT_BEGIN_NAMESPACE
class QFile;
class QTemporaryFile;
class QWidget;
class QTextStream;
class QDataStream;
QT_END_NAMESPACE

namespace Utils {

class QTCREATOR_UTILS_EXPORT FileReader
{
    Q_DECLARE_TR_FUNCTIONS(FileUtils) // sic!
public:
    static QByteArray fetchQrc(const QString &fileName); // Only for internal resources
    bool fetch(const QString &fileName, QIODevice::OpenMode mode = QIODevice::NotOpen); // QIODevice::ReadOnly is implicit
    bool fetch(const QString &fileName, QIODevice::OpenMode mode, QString *errorString);
    bool fetch(const QString &fileName, QString *errorString)
        { return fetch(fileName, QIODevice::NotOpen, errorString); }
    bool fetch(const QString &fileName, QIODevice::OpenMode mode, QWidget *parent);
    bool fetch(const QString &fileName, QWidget *parent)
        { return fetch(fileName, QIODevice::NotOpen, parent); }
    const QByteArray &data() const { return m_data; }
    const QString &errorString() const { return m_errorString; }
private:
    QByteArray m_data;
    QString m_errorString;
};

class QTCREATOR_UTILS_EXPORT FileSaverBase
{
    Q_DECLARE_TR_FUNCTIONS(FileUtils) // sic!
public:
    FileSaverBase();
    virtual ~FileSaverBase();

    QString fileName() const { return m_fileName; }
    bool hasError() const { return m_hasError; }
    QString errorString() const { return m_errorString; }
    virtual bool finalize();
    bool finalize(QString *errStr);
    bool finalize(QWidget *parent);

    bool write(const char *data, int len);
    bool write(const QByteArray &bytes);
    bool setResult(QTextStream *stream);
    bool setResult(QDataStream *stream);
    bool setResult(QXmlStreamWriter *stream);
    bool setResult(bool ok);

protected:
    QFile *m_file;
    QString m_fileName;
    QString m_errorString;
    bool m_hasError;

private:
    Q_DISABLE_COPY(FileSaverBase)
};

class QTCREATOR_UTILS_EXPORT FileSaver : public FileSaverBase
{
public:
    explicit FileSaver(const QString &filename, QIODevice::OpenMode mode = QIODevice::NotOpen); // QIODevice::WriteOnly is implicit

    virtual bool finalize();
    using FileSaverBase::finalize;
    QFile *file() { return m_file; }

private:
    Q_DISABLE_COPY(FileSaver)
    bool m_isSafe;
};

class QTCREATOR_UTILS_EXPORT TempFileSaver : public FileSaverBase
{
public:
    explicit TempFileSaver(const QString &templ = QString());
    ~TempFileSaver();

    QTemporaryFile *file() { return reinterpret_cast<QTemporaryFile *>(m_file); }

    void setAutoRemove(bool on) { m_autoRemove = on; }

private:
    Q_DISABLE_COPY(TempFileSaver)
    bool m_autoRemove;
};

}

#endif // FILEUTILS_H