ImHex/plugins/libimhex/source/helpers/file.cpp

111 lines
2.6 KiB
C++

#include <hex/helpers/file.hpp>
#include <unistd.h>
namespace hex {
File::File(const std::string &path, Mode mode) : m_path(path) {
if (mode == File::Mode::Read)
this->m_file = fopen64(path.c_str(), "rb");
else if (mode == File::Mode::Write)
this->m_file = fopen64(path.c_str(), "r+b");
if (mode == File::Mode::Create || (mode == File::Mode::Write && this->m_file == nullptr))
this->m_file = fopen64(path.c_str(), "w+b");
}
File::File() {
this->m_file = nullptr;
}
File::File(File &&other) noexcept {
this->m_file = other.m_file;
other.m_file = nullptr;
}
File::~File() {
this->close();
}
void File::seek(u64 offset) {
fseeko64(this->m_file, offset, SEEK_SET);
}
void File::close() {
if (isValid()) {
fclose(this->m_file);
this->m_file = nullptr;
}
}
size_t File::readBuffer(u8 *buffer, size_t size) {
if (!isValid()) return 0;
return fread(buffer, size, 1, this->m_file);
}
std::vector<u8> File::readBytes(size_t numBytes) {
if (!isValid()) return { };
std::vector<u8> bytes(numBytes ?: getSize());
auto bytesRead = fread(bytes.data(), 1, bytes.size(), this->m_file);
bytes.resize(bytesRead);
return bytes;
}
std::string File::readString(size_t numBytes) {
if (!isValid()) return { };
if (getSize() == 0) return { };
auto bytes = readBytes(numBytes);
return { reinterpret_cast<char*>(bytes.data()), bytes.size() };
}
void File::write(const u8 *buffer, size_t size) {
if (!isValid()) return;
fwrite(buffer, size, 1, this->m_file);
}
void File::write(const std::vector<u8> &bytes) {
if (!isValid()) return;
fwrite(bytes.data(), 1, bytes.size(), this->m_file);
}
void File::write(const std::string &string) {
if (!isValid()) return;
fwrite(string.data(), string.size(), 1, this->m_file);
}
size_t File::getSize() const {
if (!isValid()) return 0;
auto startPos = ftello64(this->m_file);
fseeko64(this->m_file, 0, SEEK_END);
size_t size = ftello64(this->m_file);
fseeko64(this->m_file, startPos, SEEK_SET);
return size;
}
void File::setSize(u64 size) {
if (!isValid()) return;
ftruncate64(fileno(this->m_file), size);
}
void File::flush() {
fflush(this->m_file);
}
void File::remove() {
this->close();
std::remove(this->m_path.c_str());
}
}