/****************************************************************************

**

** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

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** This file is part of the qmake application of the Qt Toolkit.

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** 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:

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**

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** rights. These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

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** 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

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** file. Please review the following information to ensure the GNU General

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****************************************************************************/

#ifndef CACHEKEYS_H

#define CACHEKEYS_H

#include "project.h"

#include <qstring.h>

#include <qstringlist.h>

#include <qfile.h>

#include <qfileinfo.h>

#include <qhash.h>

QT_BEGIN_NAMESPACE

// -------------------------------------------------------------------------------------------------

struct FixStringCacheKey

{

    mutable uint hash;

    QString string, pwd;

    uchar flags;

    FixStringCacheKey(const QString &s, uchar f)

    {

        hash = 0;

        pwd = qmake_getpwd();

        string = s;

        flags = f;

    }

    bool operator==(const FixStringCacheKey &f) const

    {

        return (hashCode() == f.hashCode() &&

                f.flags == flags &&

                f.string == string &&

                f.pwd == pwd);

    }

    inline uint hashCode() const {

        if(!hash)

            hash = qHash(string) | qHash(flags) /*| qHash(pwd)*/;

        return hash;

    }

};

inline uint qHash(const FixStringCacheKey &f) { return f.hashCode(); }

// -------------------------------------------------------------------------------------------------

struct FileInfoCacheKey

{

    mutable uint hash;

    QString file, pwd;

    FileInfoCacheKey(const QString &f)

    {

        hash = 0;

        if(isRelativePath(f))

            pwd = qmake_getpwd();

        file = f;

    }

    bool operator==(const FileInfoCacheKey &f) const

    {

        return (hashCode() == f.hashCode() && f.file == file &&

                f.pwd == pwd);

    }

    inline uint hashCode() const {

        if(!hash)

            hash = qHash(file) /*| qHash(pwd)*/;

        return hash;

    }

    inline bool isRelativePath(const QString &file) {

        int length = file.length();

        if (!length)

            return true;

        const QChar c0 = file.at(0);

        const QChar c1 = length >= 2 ? file.at(1) : QChar(0);

        return !(c0 == QLatin1Char('/')

                || c0 == QLatin1Char('\\')

                || (c0.isLetter() && c1 == QLatin1Char(':'))

                || (c0 == QLatin1Char('/') && c1 == QLatin1Char('/'))

                || (c0 == QLatin1Char('\\') && c1 == QLatin1Char('\\')));

    }

};

inline uint qHash(const FileInfoCacheKey &f) { return f.hashCode(); }

// -------------------------------------------------------------------------------------------------

template <typename T>

inline void qmakeDeleteCacheClear(void *i) { delete reinterpret_cast<T*>(i); }

inline void qmakeFreeCacheClear(void *i) { free(i); }

typedef void (*qmakeCacheClearFunc)(void *);

void qmakeAddCacheClear(qmakeCacheClearFunc func, void **);

void qmakeClearCaches();

QT_END_NAMESPACE

#endif // CACHEKEYS_H