基本上,我需要使用C++编写一个十六进制转储实用程序。它将看起来像这样:
(使用Visual Studio的Word文档十六进制转储的一部分)
我想提示用户输入文件名,然后显示十六进制值以及转换后的ASCII字符。我还不太熟悉处理二进制文件,所以如果您能简单明了地解释一下,那将不胜感激。
![使用Visual Studio的Word文档十六进制转储的一部分](https://istack.dev59.com/rg6uh.webp)
我想提示用户输入文件名,然后显示十六进制值以及转换后的ASCII字符。我还不太熟悉处理二进制文件,所以如果您能简单明了地解释一下,那将不胜感激。
#include <cctype>
#include <iostream>
#include <iomanip>
int main()
{
const int ROW_SIZE = 16; // Number of bytes per row
const int GROUP_SIZE = 8; // Number of bytes for each hex group
unsigned long address = 0;
std::cout << std::hex << std::setfill('0');
while (std::cin.good())
{
// Read up to ROW_SIZE bytes
int nread;
char buf[ROW_SIZE];
for (nread = 0; nread < ROW_SIZE && std::cin.get(buf[nread]); nread++);
if (nread == 0) break;
// Show the address
std::cout << std::setw(8) << address;
// Show the hex codes
for (int i = 0; i < ROW_SIZE; i++)
{
if (i % GROUP_SIZE == 0) std::cout << ' ';
if (i < nread)
std::cout << ' ' << std::setw(2) << (unsigned int)(unsigned char)buf[i];
else
std::cout << " ";
}
// Show printable characters
std::cout << " ";
for (int i = 0; i < nread; i++)
{
std::cout << (std::isprint(buf[i]) ? buf[i] : '.');
}
std::cout << "\n";
address += ROW_SIZE;
}
}
输入
Hello there, this is a test binary file.
What do you think?
.
输出
00000000 48 65 6c 6c 6f 20 74 68 65 72 65 2c 20 74 68 69 Hello there, thi
00000010 73 20 69 73 20 61 20 74 65 73 74 20 62 69 6e 61 s is a test bina
00000020 72 79 20 66 69 6c 65 2e 0a 57 68 61 74 20 64 6f ry file..What do
00000030 20 79 6f 75 20 74 68 69 6e 6b 3f 0a 0a 2e you think?...
c
是什么?-- 只是一个吉祥物吗?;-) - Wolf#include <iostream>
#include <vector>
#include <iomanip>
#include <numeric>
template<typename byte_type = std::uint8_t, typename container_type = std::vector<std::vector<byte_type>>>
container_type arrange_bytes(const byte_type* buffer, const std::size_t size, const std::size_t w = 16) {
return std::accumulate(buffer, buffer + size, container_type{{}}, [w](auto& acc, const byte_type byte) {
if(acc.back().size() >= w) {
acc.push_back({});
}
acc.back().push_back(byte);
return acc;
});
}
std::string init_text_row(const int offset) {
std::ostringstream ost{};
ost << std::hex << std::setfill('0') << std::setw(8) << offset;
return ost.str();
}
template<typename byte_type = std::uint8_t>
std::string format_row(const std::vector<byte_type>& bytes, const int offset) {
auto init = init_text_row(offset);
return std::accumulate(bytes.begin(), bytes.end(), init, [](auto& acc, const auto& byte) {
std::ostringstream ost{};
ost << ' ' << std::hex << std::setfill('0') << static_cast<unsigned>(byte);
return acc + ost.str();
});
}
template<typename byte_type = std::uint8_t, typename container_type = std::vector<std::vector<byte_type>>>
std::string format_bytes(const container_type& bytes) {
struct memory {
std::string data = {};
int offset = 0;
};
return std::accumulate(bytes.begin(), bytes.end(), memory{}, [](auto& acc, const auto& row) {
acc.data += format_row(row, acc.offset) + '\n';
acc.offset += row.size();
return acc;
}).data;
}
template<typename byte_type = std::uint8_t>
std::string hexdump(const byte_type* buffer, std::size_t size) {
return format_bytes(arrange_bytes(buffer, size));
}
#include <cstring>
int main() {
const auto* message = "Hello, world! I am Simon the Sourcerer and I am a mighty pirate!";
const auto len = std::strlen(message);
std::cout << hexdump(message, len) << std::endl;
return 0;
}