The Tor Browser: comparison mobile/android/thirdparty/ch/boye/httpclientandroidlib/util/ByteArrayBuffer.java

--1:000000000000
+:26904a5724f4
+/*
+* ====================================================================
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements.  See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership.  The ASF licenses this file
+* to you 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.
+* ====================================================================
+*
+* This software consists of voluntary contributions made by many
+* individuals on behalf of the Apache Software Foundation.  For more
+* information on the Apache Software Foundation, please see
+* <http://www.apache.org/>.
+*
+*/
+package ch.boye.httpclientandroidlib.util;
+import java.io.Serializable;
+/**
+* A resizable byte array.
+*
+* @since 4.0
+*/
+public final class ByteArrayBuffer implements Serializable {
+private static final long serialVersionUID = 4359112959524048036L;
+private byte[] buffer;
+private int len;
+/**
+* Creates an instance of {@link ByteArrayBuffer} with the given initial
+* capacity.
+*
+* @param capacity the capacity
+*/
+public ByteArrayBuffer(int capacity) {
+super();
+if (capacity < 0) {
+throw new IllegalArgumentException("Buffer capacity may not be negative");
+}
+this.buffer = new byte[capacity];
+}
+private void expand(int newlen) {
+byte newbuffer[] = new byte[Math.max(this.buffer.length << 1, newlen)];
+System.arraycopy(this.buffer, 0, newbuffer, 0, this.len);
+this.buffer = newbuffer;
+}
+/**
+* Appends <code>len</code> bytes to this buffer from the given source
+* array starting at index <code>off</code>. The capacity of the buffer
+* is increased, if necessary, to accommodate all <code>len</code> bytes.
+*
+* @param   b        the bytes to be appended.
+* @param   off      the index of the first byte to append.
+* @param   len      the number of bytes to append.
+* @throws IndexOutOfBoundsException if <code>off</code> if out of
+* range, <code>len</code> is negative, or
+* <code>off</code> + <code>len</code> is out of range.
+*/
+public void append(final byte[] b, int off, int len) {
+if (b == null) {
+return;
+}
+if ((off < 0) || (off > b.length) || (len < 0) ||
+((off + len) < 0) || ((off + len) > b.length)) {
+throw new IndexOutOfBoundsException("off: "+off+" len: "+len+" b.length: "+b.length);
+}
+if (len == 0) {
+return;
+}
+int newlen = this.len + len;
+if (newlen > this.buffer.length) {
+expand(newlen);
+}
+System.arraycopy(b, off, this.buffer, this.len, len);
+this.len = newlen;
+}
+/**
+* Appends <code>b</code> byte to this buffer. The capacity of the buffer
+* is increased, if necessary, to accommodate the additional byte.
+*
+* @param   b        the byte to be appended.
+*/
+public void append(int b) {
+int newlen = this.len + 1;
+if (newlen > this.buffer.length) {
+expand(newlen);
+}
+this.buffer[this.len] = (byte)b;
+this.len = newlen;
+}
+/**
+* Appends <code>len</code> chars to this buffer from the given source
+* array starting at index <code>off</code>. The capacity of the buffer
+* is increased if necessary to accommodate all <code>len</code> chars.
+* <p>
+* The chars are converted to bytes using simple cast.
+*
+* @param   b        the chars to be appended.
+* @param   off      the index of the first char to append.
+* @param   len      the number of bytes to append.
+* @throws IndexOutOfBoundsException if <code>off</code> if out of
+* range, <code>len</code> is negative, or
+* <code>off</code> + <code>len</code> is out of range.
+*/
+public void append(final char[] b, int off, int len) {
+if (b == null) {
+return;
+}
+if ((off < 0) || (off > b.length) || (len < 0) ||
+((off + len) < 0) || ((off + len) > b.length)) {
+throw new IndexOutOfBoundsException("off: "+off+" len: "+len+" b.length: "+b.length);
+}
+if (len == 0) {
+return;
+}
+int oldlen = this.len;
+int newlen = oldlen + len;
+if (newlen > this.buffer.length) {
+expand(newlen);
+}
+for (int i1 = off, i2 = oldlen; i2 < newlen; i1++, i2++) {
+this.buffer[i2] = (byte) b[i1];
+}
+this.len = newlen;
+}
+/**
+* Appends <code>len</code> chars to this buffer from the given source
+* char array buffer starting at index <code>off</code>. The capacity
+* of the buffer is increased if necessary to accommodate all
+* <code>len</code> chars.
+* <p>
+* The chars are converted to bytes using simple cast.
+*
+* @param   b        the chars to be appended.
+* @param   off      the index of the first char to append.
+* @param   len      the number of bytes to append.
+* @throws IndexOutOfBoundsException if <code>off</code> if out of
+* range, <code>len</code> is negative, or
+* <code>off</code> + <code>len</code> is out of range.
+*/
+public void append(final CharArrayBuffer b, int off, int len) {
+if (b == null) {
+return;
+}
+append(b.buffer(), off, len);
+}
+/**
+* Clears content of the buffer. The underlying byte array is not resized.
+*/
+public void clear() {
+this.len = 0;
+}
+/**
+* Converts the content of this buffer to an array of bytes.
+*
+* @return byte array
+*/
+public byte[] toByteArray() {
+byte[] b = new byte[this.len];
+if (this.len > 0) {
+System.arraycopy(this.buffer, 0, b, 0, this.len);
+}
+return b;
+}
+/**
+* Returns the <code>byte</code> value in this buffer at the specified
+* index. The index argument must be greater than or equal to
+* <code>0</code>, and less than the length of this buffer.
+*
+* @param      i   the index of the desired byte value.
+* @return     the byte value at the specified index.
+* @throws     IndexOutOfBoundsException  if <code>index</code> is
+*             negative or greater than or equal to {@link #length()}.
+*/
+public int byteAt(int i) {
+return this.buffer[i];
+}
+/**
+* Returns the current capacity. The capacity is the amount of storage
+* available for newly appended bytes, beyond which an allocation
+* will occur.
+*
+* @return  the current capacity
+*/
+public int capacity() {
+return this.buffer.length;
+}
+/**
+* Returns the length of the buffer (byte count).
+*
+* @return  the length of the buffer
+*/
+public int length() {
+return this.len;
+}
+/**
+* Ensures that the capacity is at least equal to the specified minimum.
+* If the current capacity is less than the argument, then a new internal
+* array is allocated with greater capacity. If the <code>required</code>
+* argument is non-positive, this method takes no action.
+*
+* @param   required   the minimum required capacity.
+*
+* @since 4.1
+*/
+public void ensureCapacity(int required) {
+if (required <= 0) {
+return;
+}
+int available = this.buffer.length - this.len;
+if (required > available) {
+expand(this.len + required);
+}
+}
+/**
+* Returns reference to the underlying byte array.
+*
+* @return the byte array.
+*/
+public byte[] buffer() {
+return this.buffer;
+}
+/**
+* Sets the length of the buffer. The new length value is expected to be
+* less than the current capacity and greater than or equal to
+* <code>0</code>.
+*
+* @param      len   the new length
+* @throws     IndexOutOfBoundsException  if the
+*               <code>len</code> argument is greater than the current
+*               capacity of the buffer or less than <code>0</code>.
+*/
+public void setLength(int len) {
+if (len < 0 || len > this.buffer.length) {
+throw new IndexOutOfBoundsException("len: "+len+" < 0 or > buffer len: "+this.buffer.length);
+}
+this.len = len;
+}
+/**
+* Returns <code>true</code> if this buffer is empty, that is, its
+* {@link #length()} is equal to <code>0</code>.
+* @return <code>true</code> if this buffer is empty, <code>false</code>
+*   otherwise.
+*/
+public boolean isEmpty() {
+return this.len == 0;
+}
+/**
+* Returns <code>true</code> if this buffer is full, that is, its
+* {@link #length()} is equal to its {@link #capacity()}.
+* @return <code>true</code> if this buffer is full, <code>false</code>
+*   otherwise.
+*/
+public boolean isFull() {
+return this.len == this.buffer.length;
+}
+/**
+* Returns the index within this buffer of the first occurrence of the
+* specified byte, starting the search at the specified
+* <code>beginIndex</code> and finishing at <code>endIndex</code>.
+* If no such byte occurs in this buffer within the specified bounds,
+* <code>-1</code> is returned.
+* <p>
+* There is no restriction on the value of <code>beginIndex</code> and
+* <code>endIndex</code>. If <code>beginIndex</code> is negative,
+* it has the same effect as if it were zero. If <code>endIndex</code> is
+* greater than {@link #length()}, it has the same effect as if it were
+* {@link #length()}. If the <code>beginIndex</code> is greater than
+* the <code>endIndex</code>, <code>-1</code> is returned.
+*
+* @param   b            the byte to search for.
+* @param   beginIndex   the index to start the search from.
+* @param   endIndex     the index to finish the search at.
+* @return  the index of the first occurrence of the byte in the buffer
+*   within the given bounds, or <code>-1</code> if the byte does
+*   not occur.
+*
+* @since 4.1
+*/
+public int indexOf(byte b, int beginIndex, int endIndex) {
+if (beginIndex < 0) {
+beginIndex = 0;
+}
+if (endIndex > this.len) {
+endIndex = this.len;
+}
+if (beginIndex > endIndex) {
+return -1;
+}
+for (int i = beginIndex; i < endIndex; i++) {
+if (this.buffer[i] == b) {
+return i;
+}
+}
+return -1;
+}
+/**
+* Returns the index within this buffer of the first occurrence of the
+* specified byte, starting the search at <code>0</code> and finishing
+* at {@link #length()}. If no such byte occurs in this buffer within
+* those bounds, <code>-1</code> is returned.
+*
+* @param   b   the byte to search for.
+* @return  the index of the first occurrence of the byte in the
+*   buffer, or <code>-1</code> if the byte does not occur.
+*
+* @since 4.1
+*/
+public int indexOf(byte b) {
+return indexOf(b, 0, this.len);
+}
+}

The Tor Browser / file comparison

comparison: mobile/android/thirdparty/ch/boye/httpclientandroidlib/util/ByteArrayBuffer.java

mobile/android/thirdparty/ch/boye/httpclientandroidlib/util/ByteArrayBuffer.java