/* * Copyright (C) 2011 The Android Open Source Project * * 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. */ #ifndef SCOPED_STRING_CHARS_H_included #define SCOPED_STRING_CHARS_H_included #include "JNIHelp.h" // A smart pointer that provides access to a jchar* given a JNI jstring. class ScopedStringChars { public: ScopedStringChars(JNIEnv* env, jstring s) : mEnv(env), mString(s), mSize(0) { mChars = env->GetStringChars(mString, NULL); if (mChars != NULL) { mSize = env->GetStringLength(mString); } } ~ScopedStringChars() { mEnv->ReleaseStringChars(mString, mChars); } const jchar* get() const { return mChars; } const jchar& operator[](size_t n) const { return mChars[n]; } size_t size() const { return mSize; } private: JNIEnv* mEnv; jstring mString; const jchar* mChars; size_t mSize; // Disallow copy and assignment. ScopedStringChars(const ScopedStringChars&); void operator=(const ScopedStringChars&); }; #endif // SCOPED_STRING_CHARS_H_included