90 lines
2.9 KiB
C++
90 lines
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// This is a partial implementation of Chromium's source file
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// base/file_version_info_win.cc
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#include "base/file_version_info_win.h"
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#include "base/files/file_path.h"
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#include "base/memory/ptr_util.h"
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#include "base/threading/scoped_blocking_call.h"
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#include "mozilla/Unused.h"
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namespace {
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struct LanguageAndCodePage {
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WORD language;
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WORD code_page;
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};
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// Returns the \VarFileInfo\Translation value extracted from the
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// VS_VERSION_INFO resource in |data|.
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LanguageAndCodePage* GetTranslate(const void* data) {
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static constexpr wchar_t kTranslation[] = L"\\VarFileInfo\\Translation";
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LPVOID translate = nullptr;
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UINT dummy_size;
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if (::VerQueryValue(data, kTranslation, &translate, &dummy_size))
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return static_cast<LanguageAndCodePage*>(translate);
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return nullptr;
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}
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const VS_FIXEDFILEINFO& GetVsFixedFileInfo(const void* data) {
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static constexpr wchar_t kRoot[] = L"\\";
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LPVOID fixed_file_info = nullptr;
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UINT dummy_size;
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CHECK(::VerQueryValue(data, kRoot, &fixed_file_info, &dummy_size));
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return *static_cast<VS_FIXEDFILEINFO*>(fixed_file_info);
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}
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} // namespace
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// static
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std::unique_ptr<FileVersionInfoWin>
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FileVersionInfoWin::CreateFileVersionInfoWin(const base::FilePath& file_path) {
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base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
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base::BlockingType::MAY_BLOCK);
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DWORD dummy;
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const wchar_t* path = file_path.value().c_str();
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const DWORD length = ::GetFileVersionInfoSize(path, &dummy);
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if (length == 0)
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return nullptr;
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std::vector<uint8_t> data(length, 0);
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if (!::GetFileVersionInfo(path, dummy, length, data.data()))
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return nullptr;
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const LanguageAndCodePage* translate = GetTranslate(data.data());
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if (!translate)
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return nullptr;
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return base::WrapUnique(new FileVersionInfoWin(
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std::move(data), translate->language, translate->code_page));
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}
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base::Version FileVersionInfoWin::GetFileVersion() const {
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return base::Version({HIWORD(fixed_file_info_.dwFileVersionMS),
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LOWORD(fixed_file_info_.dwFileVersionMS),
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HIWORD(fixed_file_info_.dwFileVersionLS),
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LOWORD(fixed_file_info_.dwFileVersionLS)});
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}
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FileVersionInfoWin::FileVersionInfoWin(std::vector<uint8_t>&& data,
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WORD language,
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WORD code_page)
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: owned_data_(std::move(data)),
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data_(owned_data_.data()),
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language_(language),
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code_page_(code_page),
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fixed_file_info_(GetVsFixedFileInfo(data_)) {
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DCHECK(!owned_data_.empty());
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mozilla::Unused << language_;
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mozilla::Unused << code_page_;
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}
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