66 lines
1.4 KiB
C++
66 lines
1.4 KiB
C++
#pragma once
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#include <cstdio>
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#include <string>
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#include "misc.h"
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static void try_close(FILE* file);
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class File {
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public:
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// https://stackoverflow.com/a/2173764
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File(const File&) = delete;
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File& operator=(const File&) = delete;
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inline File(File&& other) {
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try_close(this->_file);
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this->_file = other._file;
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other._file = nullptr;
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}
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inline File& operator=(File&& other) {
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if (this == &other) {
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return *this;
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}
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try_close(this->_file);
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this->_file = other._file;
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other._file = nullptr;
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return *this;
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}
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File(const char* __restrict path, const char* __restrict mode) {
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using namespace std::string_literals;
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this->_file = fopen(path, mode);
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if (!this->_file) {
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throw_system_error("fopen("s + quote(path) + ')');
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}
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}
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~File() {
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try_close(this->_file);
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}
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void write(const char* data, size_t length) {
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if (fwrite(data, 1, length, this->_file) != length) {
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throw_system_error("fwrite()");
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}
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}
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inline void write(const std::string& str) {
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this->write(str.data(), str.size());
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}
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inline constexpr FILE* get() const noexcept {
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return this->_file;
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}
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protected:
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FILE* _file = nullptr;
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};
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static void try_close(FILE* file) {
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if (file && fclose(file)) {
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perror("Failed to close a file: fclose()");
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}
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}
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