115 lines
3.1 KiB
C++
115 lines
3.1 KiB
C++
/***
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Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: RNG.hpp
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Date: 2021-7-14
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Author: Reece
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***/
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#pragma once
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#include "ERngStringCharacters.hpp"
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#include "RandomDef.hpp"
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#include "IRandomDevice.hpp"
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namespace Aurora::RNG
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{
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AUKN_SYM void ReadSecureRNG(Memory::MemoryViewWrite writeView);
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AUKN_SYM void ReadFastRNG (Memory::MemoryViewWrite writeView);
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AUKN_SYM AuString ReadString(AuUInt32 uLength, ERngStringCharacters type = ERngStringCharacters::eAlphaCharacters);
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AUKN_SYM void RngString(char *pString, AuUInt32 uLength, ERngStringCharacters type = ERngStringCharacters::eAlphaCharacters);
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AUKN_SYM AuUInt8 RngByte();
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AUKN_SYM bool RngBoolean();
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AUKN_SYM AuUInt32 RngU32();
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AUKN_SYM AuUInt32 RngU32(AuUInt32 uMin, AuUInt32 uMax);
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AUKN_SYM AuUInt64 RngU64();
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AUKN_SYM AuInt32 RngInt(AuInt32 uMin, AuInt32 uMax);
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AUKN_SYM double RngDecimal();
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AUKN_SYM float RngNumber(float min, float max);
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AUKN_SYM AuUInt32 RngIndex(AuUInt32 count /* = max + 1*/);
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// Note: it is conceivable that someone may want the following templates for some cryptographic purpose
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template<bool fast = true, typename T, int N>
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static auline void RngFillArray(T(&array)[N])
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{
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if constexpr (fast)
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{
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ReadFastRNG(Memory::MemoryViewWrite(array));
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}
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else
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{
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ReadSecureRNG(Memory::MemoryViewWrite(array));
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}
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}
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template<bool fast = true, typename T>
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static auline void RngFillArray(T *array, AuUInt32 uCount)
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{
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if constexpr (fast)
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{
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ReadFastRNG(Memory::MemoryViewWrite(array, uCount * sizeof(T)));
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}
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else
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{
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ReadSecureRNG(Memory::MemoryViewWrite(array, uCount * sizeof(T)));
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}
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}
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template<bool fast = true, typename T>
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static auline void RngFillRange(T &container)
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{
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RngFillArray<fast>(container.begin(), container.end() - container.begin());
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}
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static auline void RngFillBuffer(Memory::ByteBuffer &buffer)
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{
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auto view = buffer.GetNextLinearWrite();
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RngFillRange(view);
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buffer.writePtr += view.length;
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}
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/**
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* @brief
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* @deprecated
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*/
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static auline void RngFillRange(Memory::ByteBuffer &buffer)
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{
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RngFillBuffer(buffer);
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}
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template<bool fast = true, typename T>
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static auline T RngTmpl()
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{
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T ret {};
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if constexpr (fast)
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{
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ReadFastRNG(Memory::MemoryViewWrite(&ret, sizeof(T)));
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}
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else
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{
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ReadSecureRNG(Memory::MemoryViewWrite(&ret, sizeof(T)));
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}
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return ret;
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}
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template<typename T>
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static auline T &RngArray(T *pItems, AuUInt32 uCount)
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{
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return pItems[RngIndex(uCount)];
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}
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template<typename T>
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static auline T &RngVector(AuList<T> &items)
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{
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return RngArray(items.data(), items.size());
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}
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template<typename T>
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static auline T &RngRange(T &items)
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{
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return RngArray(items.begin(), items.end() - items.begin());
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}
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} |