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114 lines
3.2 KiB
C++
114 lines
3.2 KiB
C++
/**
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* Copyright (c) 2007-2013, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef byte_array_hh
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#define byte_array_hh
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#include <ostream>
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#include <string>
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include "base/lnav_log.hh"
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template<size_t COUNT, typename T = unsigned char>
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struct byte_array {
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static constexpr size_t BYTE_COUNT = COUNT * sizeof(T);
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static constexpr size_t STRING_SIZE = BYTE_COUNT * 2 + 1;
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byte_array(){};
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byte_array(const byte_array& other)
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{
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memcpy(this->ba_data, other.ba_data, BYTE_COUNT);
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};
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bool operator<(const byte_array& other) const
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{
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return memcmp(this->ba_data, other.ba_data, BYTE_COUNT) < 0;
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};
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bool operator!=(const byte_array& other) const
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{
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return memcmp(this->ba_data, other.ba_data, BYTE_COUNT) != 0;
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};
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bool operator==(const byte_array& other) const
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{
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return memcmp(this->ba_data, other.ba_data, BYTE_COUNT) == 0;
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};
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void clear()
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{
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memset(this->ba_data, 0, BYTE_COUNT);
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};
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void to_string(char* buffer) const
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{
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require(buffer != nullptr);
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for (size_t lpc = 0; lpc < BYTE_COUNT; lpc++) {
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snprintf(&buffer[lpc * 2], 3, "%02x", this->ba_data[lpc]);
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}
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};
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std::string to_string() const
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{
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char buffer[STRING_SIZE];
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this->to_string(buffer);
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return std::string(buffer);
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}
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const unsigned char* in() const
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{
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return this->ba_data;
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};
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T* out(int offset = 0)
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{
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T* ptr = (T*) this->ba_data;
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return &ptr[offset];
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};
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unsigned char ba_data[BYTE_COUNT];
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};
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template<size_t COUNT, typename T = unsigned char>
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std::ostream&
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operator<<(std::ostream& os, const byte_array<COUNT, T>& ba)
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{
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os << ba.to_string();
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return os;
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}
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#endif
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