jni/mac/JStringWrap.h

/* 
 * Copyright 2006 Google Inc.
 * 
 * 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 JSTRINGWRAP_H
#define JSTRINGWRAP_H

#include <jni.h>

struct JStringWrap
{
    JStringWrap(JNIEnv* env, jstring str): env(env), s(str), p(0), jp(0) { }
    ~JStringWrap() { if (p) env->ReleaseStringUTFChars(s, p); if (jp) env->ReleaseStringChars(s, jp); }
    const char* str() { if (!p) p = env->GetStringUTFChars(s, 0); return p; }
    const jchar* jstr() { if (!jp) jp = env->GetStringChars(s, 0); return jp; }
	jsize length() { return env->GetStringLength(s); }
private:
    JNIEnv* env;
    jstring s;
    const char* p;
    const jchar* jp;
};

#endif