puai_dispatch/snap7_communication/snap7_buf.cpp

#include "snap7_buf.h"
#include <string>
#include <string.h>

Snap7_buf::Snap7_buf()
{
	m_id = 0;
	m_start_index = 0;
	m_size = 0;
	mp_buf_obverse = nullptr;
	mp_buf_reverse = nullptr;
	m_communication_mode = NO_COMMUNICATION;

}
Snap7_buf::Snap7_buf(const Snap7_buf& other)
{
	m_id = other.m_id;
	m_start_index = other.m_start_index;
	m_communication_mode = other.m_communication_mode;

	if ( other.m_size > 0 && other.mp_buf_obverse != nullptr && other.mp_buf_reverse != nullptr)
	{
		mp_buf_obverse = (void*)malloc(other.m_size);
		memcpy(mp_buf_obverse, other.mp_buf_obverse, other.m_size);
		mp_buf_reverse = (void*)malloc(other.m_size);
		memcpy(mp_buf_reverse, other.mp_buf_reverse, other.m_size);
		m_size = other.m_size;
	}
}
Snap7_buf& Snap7_buf::operator =(const Snap7_buf& other)
{
	m_id = other.m_id;
	m_start_index = other.m_start_index;
	m_communication_mode = other.m_communication_mode;

	if ( other.m_size > 0 && other.mp_buf_obverse != nullptr && other.mp_buf_reverse != nullptr)
	{
		mp_buf_obverse = (void*)malloc(other.m_size);
		memcpy(mp_buf_obverse, other.mp_buf_obverse, other.m_size);
		mp_buf_reverse = (void*)malloc(other.m_size);
		memcpy(mp_buf_reverse, other.mp_buf_reverse, other.m_size);
		m_size = other.m_size;
	}
}
Snap7_buf::~Snap7_buf()
{
	if ( mp_buf_obverse )
	{
		free(mp_buf_obverse);
		mp_buf_obverse = NULL;
	}
	if ( mp_buf_reverse )
	{
		free(mp_buf_reverse);
		mp_buf_reverse = NULL;
	}
}

Snap7_buf::Snap7_buf(int id, int start_index, int size,
					 std::vector<Snap7_buf::Variable_information>& variable_information_vector,Communication_mode communication_mode)
{
	m_id = id;
	m_start_index = start_index;
	m_communication_mode = communication_mode;

	if ( size > 0)
	{
		mp_buf_obverse = (void*)malloc(size);
		memset(mp_buf_obverse, 0, size);
		mp_buf_reverse = (void*)malloc(size);
		memset(mp_buf_reverse, 0, size);
		m_size = size;
		m_variable_information_vector=variable_information_vector;
	}
}
Snap7_buf::Snap7_buf(int id, int start_index, int size, void* p_buf_obverse, void* p_buf_reverse,
					 std::vector<Snap7_buf::Variable_information>& variable_information_vector, Communication_mode communication_mode)
{
	m_id = id;
	m_start_index = start_index;
	m_communication_mode = communication_mode;

	if ( size > 0 && p_buf_obverse != nullptr && p_buf_reverse != nullptr)
	{
		mp_buf_obverse = (void*)malloc(size);
		memcpy(mp_buf_obverse, p_buf_obverse, size);
		mp_buf_reverse = (void*)malloc(size);
		memcpy(mp_buf_reverse, p_buf_reverse, size);
		m_size = size;
		m_variable_information_vector=variable_information_vector;
	}
}

//正序数据 转为 倒序数据
void Snap7_buf::obverse_to_reverse()
{
	char *p_in=(char*)mp_buf_obverse;
	char *p_out=(char*)mp_buf_reverse;

	for ( auto &iter:m_variable_information_vector)
	{
		for (int i = 0; i < iter.m_variable_count; ++i)
		{
			for (int j = iter.m_variable_index*i; j < iter.m_variable_index*i+iter.m_variable_size ; ++j)
			{
				p_out[j] = p_in[iter.m_variable_index*i+iter.m_variable_size - j -1];
			}
		}
	}
}

//倒序数据 转为 正序数据
void Snap7_buf::reverse_to_obverse()
{
	char *p_in=(char*)mp_buf_reverse;
	char *p_out=(char*)mp_buf_obverse;

	for ( auto &iter:m_variable_information_vector)
	{
		for (int i = 0; i < iter.m_variable_count; ++i)
		{
			for (int j = iter.m_variable_index*i; j < iter.m_variable_index*i+iter.m_variable_size ; ++j)
			{
				p_out[j] = p_in[iter.m_variable_index*i+iter.m_variable_size - j -1];
			}
		}
	}
}

int Snap7_buf::get_id()
{
	return m_id;
}
int Snap7_buf::get_start_index()
{
	return m_start_index;
}
int Snap7_buf::get_size()
{
	return m_size;
}
void* Snap7_buf::get_buf_obverse()
{
	return mp_buf_obverse;
}
void* Snap7_buf::get_buf_reverse()
{
	return mp_buf_reverse;
}

Snap7_buf::Communication_mode Snap7_buf::get_communication_mode()
{
	return m_communication_mode;
}
void Snap7_buf::set_communication_mode(Communication_mode communication_mode)
{
	m_communication_mode = communication_mode;
}