stringstream.h

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/*
* Copyright 2016 Autodesk, Inc. All rights reserved.
* Use of this software is subject to the terms of the Autodesk license agreement and any attachments or Appendices thereto provided at the time of installation or download,
* or which otherwise accompanies this software in either electronic or hard copy form, or which is signed by you and accepted by Autodesk.
*/


#pragma once

#include "gwnavruntime/kernel/SF_Std.h"
#include "gwnavruntime/kernel/SF_String.h"
#include "gwnavruntime/base/memory.h"

namespace Kaim
{

static const char Endl = '\n';

class StringStream
{
private:
    KY_DEFINE_NEW_DELETE_OPERATORS(Stat_Default_Mem)
    KY_CLASS_WITHOUT_COPY(StringStream)

public:
    StringStream() : m_ownString(), m_string(m_ownString) {}

    explicit StringStream(String& str) : m_string(str) {}

    const String& Str() const { return m_string; }

    const char* CStr() const { return m_string.ToCStr(); }

    void Clear() { m_string.Clear(); }

    StringStream& AppendString(const char* str, KyUInt32 length);

    StringStream& AppendChar(char value) { return AppendString(&value, 1); }

    template <typename T>
    StringStream& AppendValue(T value, const char* format)
    {
        char tempBuffer[64];
        KyUInt32 length = (KyUInt32)SFsprintf(tempBuffer, 64, format, value);
        AppendString(tempBuffer, length);
        return *this;
    }

private:
    String m_ownString;
    String& m_string;
};


inline StringStream& operator<<(StringStream& ss, KyInt32 value)         { return ss.AppendValue(value, "%i"); }
inline StringStream& operator<<(StringStream& ss, KyUInt32 value)        { return ss.AppendValue(value, "%u"); }
inline StringStream& operator<<(StringStream& ss, KyInt64 value)         { return ss.AppendValue((KyInt32)value, "%i"); }
inline StringStream& operator<<(StringStream& ss, KyUInt64 value)        { return ss.AppendValue((KyUInt32)value, "%u"); }
inline StringStream& operator<<(StringStream& ss, KyFloat32 value)       { return ss.AppendValue(value, "%.9g"); }
inline StringStream& operator<<(StringStream& ss, KyFloat64 value)       { return ss.AppendValue(value, "%.17g"); }
inline StringStream& operator<<(StringStream& ss, bool value)            { return value ? ss.AppendString("true", 4) : ss.AppendString("false", 5); }
inline StringStream& operator<<(StringStream& ss, char value)            { return ss.AppendChar(value); }
inline StringStream& operator<<(StringStream& ss, const char* str)
{
    if (str == nullptr)
        return ss;
    return ss.AppendString(str, (KyUInt32)(SFstrlen(str)));
}


} // namespace Kaim