sneedmc/libraries/iconfix/internal/qhexstring_p.h

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#include <QtCore/qglobal.h>
#include <QtCore/qpoint.h>
#include <QtCore/qstring.h>
#include <QtGui/qpolygon.h>
#include <QtCore/qstringbuilder.h>

#pragma once

//
//  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.
//

// internal helper. Converts an integer value to an unique string token
template <typename T> struct HexString
{
    inline HexString(const T t) : val(t)
    {
    }

    inline void write(QChar *&dest) const
    {
        const ushort hexChars[] = {'0', '1', '2', '3', '4', '5', '6', '7',
                                   '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
        const char *c = reinterpret_cast<const char *>(&val);
        for (uint i = 0; i < sizeof(T); ++i)
        {
            *dest++ = hexChars[*c & 0xf];
            *dest++ = hexChars[(*c & 0xf0) >> 4];
            ++c;
        }
    }
    const T val;
};

// specialization to enable fast concatenating of our string tokens to a string
template <typename T> struct QConcatenable<HexString<T>>
{
    typedef HexString<T> type;
    enum
    {
        ExactSize = true
    };
    static int size(const HexString<T> &)
    {
        return sizeof(T) * 2;
    }
    static inline void appendTo(const HexString<T> &str, QChar *&out)
    {
        str.write(out);
    }
    typedef QString ConvertTo;
};