| /*
|
| * Copyright 1999-2011 Alibaba Group.
|
| *
|
| * 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 com.alibaba.dubbo.common.io; |
| |
| import java.io.IOException; |
| import java.io.Writer; |
| |
| /** |
| * Thread unsafed StringWriter. |
| * |
| * @author qian.lei |
| */ |
| |
| public class UnsafeStringWriter extends Writer |
| { |
| private StringBuilder mBuffer; |
| |
| public UnsafeStringWriter() |
| { |
| lock = mBuffer = new StringBuilder(); |
| } |
| |
| public UnsafeStringWriter(int size) |
| { |
| if( size < 0 ) |
| throw new IllegalArgumentException("Negative buffer size"); |
| |
| lock = mBuffer = new StringBuilder(); |
| } |
| |
| @Override |
| public void write(int c) |
| { |
| mBuffer.append((char)c); |
| } |
| |
| @Override |
| public void write(char[] cs) throws IOException |
| { |
| mBuffer.append(cs, 0, cs.length); |
| } |
| |
| @Override |
| public void write(char[] cs, int off, int len) throws IOException |
| { |
| if( (off < 0) || (off > cs.length) || (len < 0) || |
| ((off + len) > cs.length) || ((off + len) < 0) ) |
| throw new IndexOutOfBoundsException(); |
| |
| if( len > 0 ) |
| mBuffer.append(cs, off, len); |
| } |
| |
| @Override |
| public void write(String str) |
| { |
| mBuffer.append(str); |
| } |
| |
| @Override |
| public void write(String str, int off, int len) |
| { |
| mBuffer.append(str.substring(off, off + len)); |
| } |
| |
| @Override |
| public Writer append(CharSequence csq) |
| { |
| if (csq == null) |
| write("null"); |
| else |
| write(csq.toString()); |
| return this; |
| } |
| |
| @Override |
| public Writer append(CharSequence csq, int start, int end) |
| { |
| CharSequence cs = (csq == null ? "null" : csq); |
| write(cs.subSequence(start, end).toString()); |
| return this; |
| } |
| |
| @Override |
| public Writer append(char c) |
| { |
| mBuffer.append(c); |
| return this; |
| } |
| |
| @Override |
| public void close(){} |
| |
| @Override |
| public void flush(){} |
| |
| @Override |
| public String toString() |
| { |
| return mBuffer.toString(); |
| } |
| } |