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/*******************************************************************************
* ============LICENSE_START====================================================
* * org.onap.aaf
* * ===========================================================================
* * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* * ===========================================================================
* * 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.
* * ============LICENSE_END====================================================
* *
* * ECOMP is a trademark and service mark of AT&T Intellectual Property.
* *
******************************************************************************/
package org.onap.aaf.inno.env.util;
import java.io.IOException;
import java.io.OutputStream;
public class StringBuilderOutputStream extends OutputStream {
private StringBuilder buf;
/**
* Create a new string writer using the default initial string-buffer
* size.
*/
public StringBuilderOutputStream() {
buf = new StringBuilder();
}
/**
* Create a new string writer using a passed in StringBuilder
* size.
*/
public StringBuilderOutputStream(StringBuilder sb) {
buf = sb;
}
/**
* Create a new string writer using the specified initial string-buffer
* size.
*
* @param initialSize
* The number of <tt>byte</tt> values that will fit into this buffer
* before it is automatically expanded
*
* @throws IllegalArgumentException
* If <tt>initialSize</tt> is negative
*/
public StringBuilderOutputStream(int initialSize) {
if (initialSize < 0) {
throw new IllegalArgumentException("Negative buffer size");
}
buf = new StringBuilder(initialSize);
}
/**
* Write a single character.
*/
public void write(int c) {
buf.append((byte) c);
}
/**
* Write a portion of an array of characters.
*
* @param bbuf Array of characters
* @param off Offset from which to start writing characters
* @param len Number of characters to write
*/
public void write(byte bbuf[], int off, int len) {
if ((off < 0) || (off > bbuf.length) || (len < 0) ||
((off + len) > bbuf.length) || ((off + len) < 0)) {
throw new IndexOutOfBoundsException();
} else if (len == 0) {
return;
}
buf.append(new String(bbuf, off, len));
}
@Override
public void write(byte[] b) throws IOException {
buf.append(new String(b));
}
/**
* Write a string.
*/
public void write(String str) {
buf.append(str);
}
/**
* Write a portion of a string.
*
* @param str String to be written
* @param off Offset from which to start writing characters
* @param len Number of characters to write
*/
public void write(String str, int off, int len) {
buf.append(str,off,len);
}
public StringBuilderOutputStream append(CharSequence csq) {
if (csq == null) {
write("null");
} else {
for(int i = 0;i<csq.length();++i) {
buf.append(csq.charAt(i));
}
}
return this;
}
public StringBuilderOutputStream append(CharSequence csq, int start, int end) {
CharSequence cs = (csq == null ? "null" : csq);
return append(cs.subSequence(start, end));
}
/**
* Appends the specified character to this writer.
*
* <p> An invocation of this method of the form <tt>out.append(c)</tt>
* behaves in exactly the same way as the invocation
*
* <pre>
* out.write(c) </pre>
*
* @param c
* The 16-bit character to append
*
* @return This writer
*
* @since 1.5
*/
public StringBuilderOutputStream append(byte c) {
buf.append(c);
return this;
}
/**
* Return the buffer's current value as a string.
*/
public String toString() {
return buf.toString();
}
/**
* Return the string buffer itself.
*
* @return StringBuffer holding the current buffer value.
*/
public StringBuilder getBuffer() {
return buf;
}
public void reset() {
buf.setLength(0);
}
@Override
public void flush() throws IOException {
}
@Override
public void close() throws IOException {
}
}
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