org.fusesource.lmdbjni.Util Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of lmdbjni-osx64 Show documentation

The lmdbjni osx 64 bit native libraries

The newest version!

/**
 * Copyright (C) 2013, RedHat, Inc.
 *
 *    http://www.redhat.com/
 *
 * 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.
 */

package org.fusesource.lmdbjni;

import java.nio.charset.Charset;

import static org.fusesource.lmdbjni.JNI.mdb_strerror;
import static org.fusesource.lmdbjni.JNI.strlen;

/**
 * Some miscellaneous utility functions.
 *
 * @author Hiram Chirino
 */
class Util {
  public static final boolean isAndroid = isAndroid();

  public static String string(long ptr) {
    if (ptr == 0)
      return null;
    return new String(NativeBuffer.create(ptr, strlen(ptr)).toByteArray(),
      Charset.defaultCharset());
  }

  public static void checkErrorCode(int rc) {
    if (rc != 0) {
      String msg = string(mdb_strerror(rc));
      throw new LMDBException(msg, rc);
    }
  }

  public static void checkArgNotNull(Object value, String name) {
    if (value == null) {
      throw new IllegalArgumentException("The " + name + " argument cannot be null");
    }
  }

  static boolean isAndroid() {
    try {
      Class.forName("android.os.Process");
      return true;
    } catch (Throwable ignored) {
      return false;
    }
  }
}