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#pragma once
#include <unistd.h>
#include <fcntl.h>
#include <string>
#include <cstdio>
#include "error.h"
namespace ov4
{
class T_unix_file_d;
class T_unix_file_p;
class T_unix_file_d
{
public:
int fd = -1;
virtual int close()
{
if (fd == -1) return -1;
int ret = ::close(fd);
fd = -1;
return ret;
}
T_unix_file_d(const std::string &path, int oflag, int mode = -1)
{
if (oflag & O_CREAT)
{
if (mode == -1) throw T_error{error_code::FILE_MODE_NOT_SET, "Mode should be set for O_CREAT"};
fd = open(path.c_str(), oflag, mode);
if (fd == -1)
throw T_error(error_code::FILE_FAIL_TO_OPEN, "Fail to open file");
return;
}
fd = open(path.c_str(), oflag);
if (fd == -1)
throw T_error(error_code::FILE_FAIL_TO_OPEN, "Fail to open file");
}
~T_unix_file_d()
{
this->close();
}
T_unix_file_d(const T_unix_file_d &) = delete;
T_unix_file_d &operator=(const T_unix_file_d &) = delete;
};
class T_unix_file_p : public T_unix_file_d
{
public:
FILE* fp = nullptr;
int close() override
{
if (fp == nullptr) return -1;
int ret = fclose(fp);
fp = nullptr;
fd = -1;
return ret;
}
T_unix_file_p(const std::string &path, int oflag, int mode = -1)
: T_unix_file_d(path, oflag, mode)
{
const char *fp_mode;
switch (oflag & O_ACCMODE)
{
case O_RDONLY:
fp_mode = "r";
break;
case O_WRONLY:
fp_mode = "w";
break;
case O_RDWR:
fp_mode = "r+";
break;
default:
throw T_error{error_code::FILE_OFLAG_ERROR, "oflag error"};
}
fp = fdopen(fd, fp_mode);
if (fp == nullptr)
throw T_error{error_code::FILE_POINTER_FAIL_TO_OPEN, "Fail to open file pointer"};
}
~T_unix_file_p()
{
this->close();
}
T_unix_file_p(const T_unix_file_p &) = delete;
T_unix_file_p &operator=(const T_unix_file_p &) = delete;
};
}
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