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// Copyright 2017 The Bazel Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <type_traits> // static_assert
#include "src/main/native/windows/jni-util.h"
namespace bazel {
namespace windows {
using std::string;
using std::wstring;
// Ensure we can safely cast (const) jchar* to (const) WCHAR* and LP(C)WSTR.
// This is true with MSVC but not always with GCC.
static_assert(sizeof(jchar) == sizeof(WCHAR),
"jchar and WCHAR should be the same size");
string GetJavaUTFString(JNIEnv* env, jstring str) {
string result;
if (str != nullptr) {
const char* jstr = env->GetStringUTFChars(str, nullptr);
result.assign(jstr);
env->ReleaseStringUTFChars(str, jstr);
}
return result;
}
wstring GetJavaWstring(JNIEnv* env, jstring str) {
wstring result;
if (str != nullptr) {
const jchar* jstr = env->GetStringChars(str, nullptr);
// We can safely reinterpret_cast because of the static_assert checking that
// sizeof(jchar) = sizeof(WCHAR).
result.assign(reinterpret_cast<const WCHAR*>(jstr));
env->ReleaseStringChars(str, jstr);
}
return result;
}
} // namespace windows
} // namespace bazel
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