64 lines
1.4 KiB
C++
64 lines
1.4 KiB
C++
#include "FileStream.h"
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#pragma warning(disable: 4267)
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#pragma warning(disable: 4244)
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#pragma warning(disable: 4018)
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FileStream::FileStream(const std::string& filename, FileMode mode)
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{
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std::ios_base::openmode open_mode = std::ios_base::binary;
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switch (mode) {
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case FileMode::Read:
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open_mode |= std::ios_base::in;
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break;
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case FileMode::Write:
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open_mode |= std::ios_base::out;
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break;
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case FileMode::Append:
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open_mode |= std::ios_base::app;
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break;
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case FileMode::ReadWrite:
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open_mode |= std::ios_base::in | std::ios_base::out;
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break;
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default:
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throw std::invalid_argument("Invalid mode");
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}
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file_.open(filename, open_mode);
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if (!file_) {
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throw std::runtime_error("Failed to open file");
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}
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}
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FileStream::~FileStream()
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{
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if (file_.is_open()) file_.close();
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}
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long long FileStream::Read(void* buffer, size_t size) {
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return (long long)file_.read(static_cast<char*>(buffer), size).gcount();
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}
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bool FileStream::Write(const void* buffer, size_t size)
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{
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return file_.write(static_cast<const char*>(buffer), size).good();
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}
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size_t FileStream::Position()
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{
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return file_.tellg();
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}
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void FileStream::Seek(size_t pos)
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{
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file_.seekg(pos);
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}
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void FileStream::SeekToEnd()
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{
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file_.seekg(0, std::ios_base::end);
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}
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size_t FileStream::Length()
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{
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auto pos = file_.tellg();
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file_.seekg(0, std::ios_base::end);
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auto length = file_.tellg();
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file_.seekg(pos);
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return length;
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}
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void FileStream::Close()
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{
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if (file_.is_open()) file_.close();
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} |