c++读取mif文件数据

MIF（Memory Initialization File）文件是一种用于存储初始化数据的文件格式，通常用于FPGA或ASIC的设计中。C++读取MIF文件数据的方法如下：

1. 打开MIF文件并读取内容：

#include <fstream>
#include <string>

using namespace std;

ifstream infile("example.mif");
string line;
while (getline(infile, line))
{
    // 处理每一行数据
}

2. 解析MIF文件头信息：

MIF文件通常包含一些元数据信息，例如地址宽度、数据宽度、初始化值等等，需要读取并解析这些信息。

int address_width = 0;
int data_width = 0;

while (getline(infile, line))
{
    if (line.find("WIDTH") != string::npos)
    {
        // 解析宽度信息
        if (line.find("ADDRESS") != string::npos)
        {
            address_width = stoi(line.substr(line.find("=") + 1));
        }
        else if (line.find("DATA") != string::npos)
        {
            data_width = stoi(line.substr(line.find("=") + 1));
        }
    }
    else if (line.find("CONTENT") != string::npos)
    {
        // 读取初始化数据
        break;
    }
}

3. 读取初始化数据：

vector<unsigned char> data;
unsigned int address = 0;

while (getline(infile, line))
{
    if (line.find(";") != string::npos)
    {
        // 解析数据
        unsigned int value = stoi(line.substr(0, line.find(";")), nullptr, 16);
        for (int i = 0; i < data_width / 8; i++)
        {
            data.push_back((value >> (i * 8)) & 0xFF);
        }
        address++;
    }
}

完整的代码示例：

#include <fstream>
#include <iostream>
#include <string>
#include <vector>

using namespace std;

int main()
{
    ifstream infile("example.mif");
    string line;
    int address_width = 0;
    int data_width = 0;
    vector<unsigned char> data;
    unsigned int address = 0;

    while (getline(infile, line))
    {
        if (line.find("WIDTH") != string::npos)
        {
            if (line.find("ADDRESS") != string::npos)
            {
                address_width = stoi(line.substr(line.find("=") + 1));
            }
            else if (line.find("DATA") != string::npos)
            {
                data_width = stoi(line.substr(line.find("=") + 1));
            }
        }
        else if (line.find("CONTENT") != string::npos)
        {
            break;
        }
    }

    while (getline(infile, line))
    {
        if (line.find(";") != string::npos)
        {
            unsigned int value = stoi(line.substr(0, line.find(";")), nullptr, 16);
            for (int i = 0; i < data_width / 8; i++)
            {
                data.push_back((value >> (i * 8)) & 0xFF);
            }
            address++;
        }
    }

    for (unsigned int i = 0; i