content: /*
   ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
   ~                                                                               ~
   ~ The MIT License (MIT)                                                         ~
   ~                                                                               ~
   ~ Copyright (c) 2015-2025 miaixz.org and other contributors.                    ~
   ~                                                                               ~
   ~ Permission is hereby granted, free of charge, to any person obtaining a copy  ~
   ~ of this software and associated documentation files (the "Software"), to deal ~
   ~ in the Software without restriction, including without limitation the rights  ~
   ~ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell     ~
   ~ copies of the Software, and to permit persons to whom the Software is         ~
   ~ furnished to do so, subject to the following conditions:                      ~
   ~                                                                               ~
   ~ The above copyright notice and this permission notice shall be included in    ~
   ~ all copies or substantial portions of the Software.                           ~
   ~                                                                               ~
   ~ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR    ~
   ~ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,      ~
   ~ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE   ~
   ~ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER        ~
   ~ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, ~
   ~ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN     ~
   ~ THE SOFTWARE.                                                                 ~
   ~                                                                               ~
   ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
  */
  package org.miaixz.bus.core.io;
  
  import java.io.Closeable;
  import java.io.Flushable;
  import java.io.IOException;
  import java.io.Writer;
  import java.nio.CharBuffer;
  
  /**
   * 同时继承{@link Writer}和实现{@link Appendable}的聚合类，用于适配两种接口操作
   *
   * @author Kimi Liu
   * @since Java 17+
   */
  public class AppendableWriter extends Writer implements Appendable {
  
      private final Appendable appendable;
      private final boolean flushable;
      private boolean closed;
  
      /**
       * 构造
       *
       * @param appendable {@link Appendable}
       */
      public AppendableWriter(final Appendable appendable) {
          this.appendable = appendable;
          this.flushable = appendable instanceof Flushable;
          this.closed = false;
      }
  
      @Override
      public void write(final char[] cbuf, final int off, final int len) throws IOException {
          checkNotClosed();
          appendable.append(CharBuffer.wrap(cbuf), off, off + len);
      }
  
      @Override
      public void write(final int c) throws IOException {
          checkNotClosed();
          appendable.append((char) c);
      }
  
      @Override
      public Writer append(final char c) throws IOException {
          checkNotClosed();
          appendable.append(c);
          return this;
      }
  
      @Override
      public Writer append(final CharSequence csq, final int start, final int end) throws IOException {
          checkNotClosed();
          appendable.append(csq, start, end);
          return this;
      }
  
      @Override
      public Writer append(final CharSequence csq) throws IOException {
          checkNotClosed();
          appendable.append(csq);
          return this;
      }
  
      @Override
      public void write(final String text, final int off, final int len) throws IOException {
          checkNotClosed();
          appendable.append(text, off, off + len);
      }
  
      @Override
      public void write(final String text) throws IOException {
          appendable.append(text);
      }
  
      @Override
      public void write(final char[] c) throws IOException {
          appendable.append(CharBuffer.wrap(c));
      }
  
      @Override
      public void flush() throws IOException {
          checkNotClosed();
          if (flushable) {
              ((Flushable) appendable).flush();
          }
      }
  
      /**
       * 检查Writer是否已经被关闭
       *
       * @throws IOException IO异常
       */
      private void checkNotClosed() throws IOException {
          if (closed) {
              throw new IOException("Writer is closed!" + this);
          }
      }
  
      @Override
      public void close() throws IOException {
          if (!closed) {
              flush();
              if (appendable instanceof Closeable) {
                  ((Closeable) appendable).close();
              }
              closed = true;
          }
      }
  
  }
  