/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
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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
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** Public License version 3.0 as published by the Free Software Foundation
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** $QT_END_LICENSE$
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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