native_library_win.cc

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#include "flutter/fml/native_library.h"
 
#include <windows.h>
 
#include "flutter/fml/platform/win/wstring_conversion.h"
 
namespace fml {
 
NativeLibrary::NativeLibrary(const char* path)
    : handle_(nullptr), close_handle_(true) {
  if (path == nullptr) {
    return;
  }
 
  handle_ = ::LoadLibrary(Utf8ToWideString(path).c_str());
}
 
NativeLibrary::NativeLibrary(Handle handle, bool close_handle)
    : handle_(handle), close_handle_(close_handle) {}
 
NativeLibrary::~NativeLibrary() {
  if (handle_ != nullptr && close_handle_) {
    ::FreeLibrary(handle_);
  }
}
 
NativeLibrary::Handle NativeLibrary::GetHandle() const {
  return handle_;
}
 
fml::RefPtr<NativeLibrary> NativeLibrary::Create(const char* path) {
  auto library = fml::AdoptRef(new NativeLibrary(path));
  return library->GetHandle() != nullptr ? library : nullptr;
}
 
fml::RefPtr<NativeLibrary> NativeLibrary::CreateWithHandle(
    Handle handle,
    bool close_handle_when_done) {
  auto library =
      fml::AdoptRef(new NativeLibrary(handle, close_handle_when_done));
  return library->GetHandle() != nullptr ? library : nullptr;
}
 
fml::RefPtr<NativeLibrary> NativeLibrary::CreateForCurrentProcess() {
  return fml::AdoptRef(new NativeLibrary(::GetModuleHandle(nullptr), false));
}
 
NativeLibrary::SymbolHandle NativeLibrary::Resolve(const char* symbol) const {
  if (symbol == nullptr || handle_ == nullptr) {
    return nullptr;
  }
  return ::GetProcAddress(handle_, symbol);
}
 
}  // namespace fml