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// Copyright (c) 2017 Egor Tensin <Egor.Tensin@gmail.com>
// This file is part of the "PDB repository" project.
// For details, see https://github.com/egor-tensin/pdb-repo.
// Distributed under the MIT License.
#include "pdb/all.hpp"
#include <safeint.h>
#include <Windows.h>
#include <cstddef>
#include <stdexcept>
#include <string>
namespace pdb
{
namespace file
{
std::size_t get_size(const std::string& path)
{
const Handle handle{CreateFileA(
path.c_str(),
FILE_READ_ATTRIBUTES,
FILE_SHARE_READ,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL)};
if (handle.get() == INVALID_HANDLE_VALUE)
throw error::windows(GetLastError());
LARGE_INTEGER size;
if (!GetFileSizeEx(handle.get(), &size))
throw error::windows(GetLastError());
std::size_t result = 0;
if (!msl::utilities::SafeCast(size.QuadPart, result))
throw std::runtime_error{"invalid file size"};
return result;
}
ID query_id(const std::string& path)
{
const Handle handle{CreateFileA(
path.c_str(),
FILE_READ_ATTRIBUTES,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL)};
if (handle.get() == INVALID_HANDLE_VALUE)
throw error::windows(GetLastError());
FILE_ID_INFO id;
if (!GetFileInformationByHandleEx(
handle.get(),
FileIdInfo,
&id,
sizeof(id)))
throw error::windows(GetLastError());
return {id};
}
}
}
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