diff options
Diffstat (limited to 'env/src/main/java/com/att/inno/env/util/StringBuilderWriter.java')
| -rw-r--r-- | env/src/main/java/com/att/inno/env/util/StringBuilderWriter.java | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/env/src/main/java/com/att/inno/env/util/StringBuilderWriter.java b/env/src/main/java/com/att/inno/env/util/StringBuilderWriter.java new file mode 100644 index 0000000..833bd7c --- /dev/null +++ b/env/src/main/java/com/att/inno/env/util/StringBuilderWriter.java @@ -0,0 +1,174 @@ +/*******************************************************************************
+ * ============LICENSE_START====================================================
+ * * org.onap.aai
+ * * ===========================================================================
+ * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
+ * * Copyright © 2017 Amdocs
+ * * ===========================================================================
+ * * 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 com.att.inno.env.util;
+
+import java.io.IOException;
+import java.io.Writer;
+
+public class StringBuilderWriter extends Writer {
+ private StringBuilder buf;
+
+
+ /**
+ * Create a new string writer using the default initial string-buffer
+ * size.
+ */
+ public StringBuilderWriter() {
+ buf = new StringBuilder();
+ }
+
+ /**
+ * Create a new string writer using a passed in StringBuilder
+ * size.
+ */
+ public StringBuilderWriter(StringBuilder sb) {
+ buf = sb;
+ }
+
+ /**
+ * Create a new string writer using the specified initial string-buffer
+ * size.
+ *
+ * @param initialSize
+ * The number of <tt>char</tt> values that will fit into this buffer
+ * before it is automatically expanded
+ *
+ * @throws IllegalArgumentException
+ * If <tt>initialSize</tt> is negative
+ */
+ public StringBuilderWriter(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((char) c);
+ }
+
+ /**
+ * Write a portion of an array of characters.
+ *
+ * @param cbuf Array of characters
+ * @param off Offset from which to start writing characters
+ * @param len Number of characters to write
+ */
+ public void write(char cbuf[], int off, int len) {
+ if ((off < 0) || (off > cbuf.length) || (len < 0) ||
+ ((off + len) > cbuf.length) || ((off + len) < 0)) {
+ throw new IndexOutOfBoundsException();
+ } else if (len == 0) {
+ return;
+ }
+ buf.append(cbuf, off, len);
+ }
+
+ /**
+ * 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) {
+ char[] chars = new char[len];
+ str.getChars(off, off+len, chars, 0);
+ buf.append(chars);
+ }
+
+ public StringBuilderWriter append(CharSequence csq) {
+ if (csq == null) {
+ write("null");
+ } else {
+ buf.append(csq);
+ }
+ return this;
+ }
+
+ public StringBuilderWriter 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 StringBuilderWriter append(char 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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