mirror of
https://github.com/love2d/love.git
synced 2026-08-14 01:20:56 +02:00
Sasha Szpakowski
98 lines
2.6 KiB
C++
98 lines
2.6 KiB
C++
/**
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* Copyright (c) 2006-2023 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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#pragma once
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// LOVE
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#include "common/Data.h"
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#include "common/StringMap.h"
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#include "common/int.h"
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namespace love
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{
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namespace data
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{
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class HashFunction
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{
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public:
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enum Function
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{
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FUNCTION_MD5,
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FUNCTION_SHA1,
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FUNCTION_SHA224,
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FUNCTION_SHA256,
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FUNCTION_SHA384,
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FUNCTION_SHA512,
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FUNCTION_MAX_ENUM
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};
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struct Value
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{
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char data[64]; // Maximum possible size (SHA512).
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size_t size;
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};
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/**
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* Get a HashFunction instance for the given function.
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*
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* @param[in] function The selected hash function.
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* @return An instance of HashFunction for the given function, or NULL if
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* not available.
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**/
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static HashFunction *getHashFunction(Function function);
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virtual ~HashFunction() {}
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/**
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* Hash the input, producing an set of bytes as output.
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*
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* @param[in] function The selected hash function.
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* @param[in] input The input data to hash.
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* @param[in] length The length of the input data.
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* @param[out] output The result of the hash function.
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**/
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virtual void hash(Function function, const char *input, uint64 length, Value &output) const = 0;
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/**
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* @param[in] function The requested hash function.
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* @return Whether this HashFunction instance implements the given function.
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**/
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virtual bool isSupported(Function function) const = 0;
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static bool getConstant(const char *in, Function &out);
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static bool getConstant(const Function &in, const char *&out);
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static std::vector<std::string> getConstants(Function);
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protected:
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HashFunction() {}
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private:
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static StringMap<Function, FUNCTION_MAX_ENUM>::Entry functionEntries[];
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static StringMap<Function, FUNCTION_MAX_ENUM> functionNames;
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}; // HashFunction
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} // data
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} // love
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