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// Copyright 2008 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "Common/IOFile.h"
#include <cstddef>
#include <cstdio>
#include <string>
#ifdef _WIN32
#include <io.h>
#include "Common/CommonFuncs.h"
#include "Common/StringUtil.h"
#else
#include <unistd.h>
#endif
#ifdef ANDROID
#include <algorithm>
#include "jni/AndroidCommon/AndroidCommon.h"
#endif
#include "Common/CommonTypes.h"
#include "Common/FileUtil.h"
namespace File
{
IOFile::IOFile() : m_file(nullptr), m_good(true)
{
}
IOFile::IOFile(std::FILE* file) : m_file(file), m_good(true)
{
}
IOFile::IOFile(const std::string& filename, const char openmode[], SharedAccess sh)
: m_file(nullptr), m_good(true)
{
Open(filename, openmode, sh);
}
IOFile::~IOFile()
{
Close();
}
IOFile::IOFile(IOFile&& other) noexcept : m_file(nullptr), m_good(true)
{
Swap(other);
}
IOFile& IOFile::operator=(IOFile&& other) noexcept
{
Swap(other);
return *this;
}
void IOFile::Swap(IOFile& other) noexcept
{
std::swap(m_file, other.m_file);
std::swap(m_good, other.m_good);
}
bool IOFile::Open(const std::string& filename, const char openmode[],
[[maybe_unused]] SharedAccess sh)
{
Close();
#ifdef _WIN32
if (sh == SharedAccess::Default)
{
m_good = _tfopen_s(&m_file, UTF8ToTStr(filename).c_str(), UTF8ToTStr(openmode).c_str()) == 0;
}
else if (sh == SharedAccess::Read)
{
m_file = _tfsopen(UTF8ToTStr(filename).c_str(), UTF8ToTStr(openmode).c_str(), SH_DENYWR);
m_good = m_file != nullptr;
}
#else
#ifdef ANDROID
if (IsPathAndroidContent(filename))
m_file = fdopen(OpenAndroidContent(filename, OpenModeToAndroid(openmode)), openmode);
else
#endif
m_file = std::fopen(filename.c_str(), openmode);
m_good = m_file != nullptr;
#endif
return m_good;
}
bool IOFile::Close()
{
if (!IsOpen() || 0 != std::fclose(m_file))
m_good = false;
m_file = nullptr;
return m_good;
}
void IOFile::SetHandle(std::FILE* file)
{
Close();
ClearError();
m_file = file;
}
u64 IOFile::GetSize() const
{
if (IsOpen())
return File::GetSize(m_file);
else
return 0;
}
bool IOFile::Seek(s64 offset, SeekOrigin origin)
{
int fseek_origin;
switch (origin)
{
case SeekOrigin::Begin:
fseek_origin = SEEK_SET;
break;
case SeekOrigin::Current:
fseek_origin = SEEK_CUR;
break;
case SeekOrigin::End:
fseek_origin = SEEK_END;
break;
default:
return false;
}
if (!IsOpen() || 0 != fseeko(m_file, offset, fseek_origin))
m_good = false;
return m_good;
}
u64 IOFile::Tell() const
{
if (IsOpen())
return ftello(m_file);
else
return UINT64_MAX;
}
bool IOFile::Flush()
{
if (!IsOpen() || 0 != std::fflush(m_file))
m_good = false;
return m_good;
}
bool IOFile::Resize(u64 size)
{
#ifdef _WIN32
if (!IsOpen() || 0 != _chsize_s(_fileno(m_file), size))
#else
// TODO: handle 64bit and growing
if (!IsOpen() || 0 != ftruncate(fileno(m_file), size))
#endif
m_good = false;
return m_good;
}
} // namespace File
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