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

--1:000000000000
+:f2b73c86f73b
+/*
+* ====================================================================
+* 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;
+import ch.boye.httpclientandroidlib.protocol.HTTP;
+/**
+* A resizable char array.
+*
+* @since 4.0
+*/
+public final class CharArrayBuffer implements Serializable {
+private static final long serialVersionUID = -6208952725094867135L;
+private char[] buffer;
+private int len;
+/**
+* Creates an instance of {@link CharArrayBuffer} with the given initial
+* capacity.
+*
+* @param capacity the capacity
+*/
+public CharArrayBuffer(int capacity) {
+super();
+if (capacity < 0) {
+throw new IllegalArgumentException("Buffer capacity may not be negative");
+}
+this.buffer = new char[capacity];
+}
+private void expand(int newlen) {
+char newbuffer[] = new char[Math.max(this.buffer.length << 1, newlen)];
+System.arraycopy(this.buffer, 0, newbuffer, 0, this.len);
+this.buffer = newbuffer;
+}
+/**
+* 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.
+*
+* @param   b        the chars to be appended.
+* @param   off      the index of the first char to append.
+* @param   len      the number of chars to append.
+* @throws IndexOutOfBoundsException if <code>off</code> is 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 newlen = this.len + len;
+if (newlen > this.buffer.length) {
+expand(newlen);
+}
+System.arraycopy(b, off, this.buffer, this.len, len);
+this.len = newlen;
+}
+/**
+* Appends chars of the given string to this buffer. The capacity of the
+* buffer is increased, if necessary, to accommodate all chars.
+*
+* @param str    the string.
+*/
+public void append(String str) {
+if (str == null) {
+str = "null";
+}
+int strlen = str.length();
+int newlen = this.len + strlen;
+if (newlen > this.buffer.length) {
+expand(newlen);
+}
+str.getChars(0, strlen, this.buffer, this.len);
+this.len = newlen;
+}
+/**
+* Appends <code>len</code> chars to this buffer from the given source
+* buffer starting at index <code>off</code>. The capacity of the
+* destination buffer is increased, if necessary, to accommodate all
+* <code>len</code> chars.
+*
+* @param   b        the source buffer to be appended.
+* @param   off      the index of the first char to append.
+* @param   len      the number of chars to append.
+* @throws IndexOutOfBoundsException if <code>off</code> is 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);
+}
+/**
+* Appends all chars to this buffer from the given source buffer starting
+* at index <code>0</code>. The capacity of the destination buffer is
+* increased, if necessary, to accommodate all {@link #length()} chars.
+*
+* @param   b        the source buffer to be appended.
+*/
+public void append(final CharArrayBuffer b) {
+if (b == null) {
+return;
+}
+append(b.buffer,0, b.len);
+}
+/**
+* Appends <code>ch</code> char to this buffer. The capacity of the buffer
+* is increased, if necessary, to accommodate the additional char.
+*
+* @param   ch        the char to be appended.
+*/
+public void append(char ch) {
+int newlen = this.len + 1;
+if (newlen > this.buffer.length) {
+expand(newlen);
+}
+this.buffer[this.len] = ch;
+this.len = newlen;
+}
+/**
+* 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.
+* <p>
+* The bytes are converted to chars using simple cast.
+*
+* @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> is 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 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] = (char) (b[i1] & 0xff);
+}
+this.len = newlen;
+}
+/**
+* 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.
+* <p>
+* The bytes are converted to chars using simple cast.
+*
+* @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> is out of
+* range, <code>len</code> is negative, or
+* <code>off</code> + <code>len</code> is out of range.
+*/
+public void append(final ByteArrayBuffer b, int off, int len) {
+if (b == null) {
+return;
+}
+append(b.buffer(), off, len);
+}
+/**
+* Appends chars of the textual representation of the given object to this
+* buffer. The capacity of the buffer is increased, if necessary, to
+* accommodate all chars.
+*
+* @param obj    the object.
+*/
+public void append(final Object obj) {
+append(String.valueOf(obj));
+}
+/**
+* Clears content of the buffer. The underlying char array is not resized.
+*/
+public void clear() {
+this.len = 0;
+}
+/**
+* Converts the content of this buffer to an array of chars.
+*
+* @return char array
+*/
+public char[] toCharArray() {
+char[] b = new char[this.len];
+if (this.len > 0) {
+System.arraycopy(this.buffer, 0, b, 0, this.len);
+}
+return b;
+}
+/**
+* Returns the <code>char</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 char value.
+* @return     the char value at the specified index.
+* @throws     IndexOutOfBoundsException  if <code>index</code> is
+*             negative or greater than or equal to {@link #length()}.
+*/
+public char charAt(int i) {
+return this.buffer[i];
+}
+/**
+* Returns reference to the underlying char array.
+*
+* @return the char array.
+*/
+public char[] buffer() {
+return this.buffer;
+}
+/**
+* Returns the current capacity. The capacity is the amount of storage
+* available for newly appended chars, beyond which an allocation will
+* occur.
+*
+* @return  the current capacity
+*/
+public int capacity() {
+return this.buffer.length;
+}
+/**
+* Returns the length of the buffer (char 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.
+*/
+public void ensureCapacity(int required) {
+if (required <= 0) {
+return;
+}
+int available = this.buffer.length - this.len;
+if (required > available) {
+expand(this.len + required);
+}
+}
+/**
+* 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 character, starting the search at the specified
+* <code>beginIndex</code> and finishing at <code>endIndex</code>.
+* If no such character 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   ch          the char 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 character in the buffer
+*   within the given bounds, or <code>-1</code> if the character does
+*   not occur.
+*/
+public int indexOf(int ch, 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] == ch) {
+return i;
+}
+}
+return -1;
+}
+/**
+* Returns the index within this buffer of the first occurrence of the
+* specified character, starting the search at <code>0</code> and finishing
+* at {@link #length()}. If no such character occurs in this buffer within
+* those bounds, <code>-1</code> is returned.
+*
+* @param   ch          the char to search for.
+* @return  the index of the first occurrence of the character in the
+*   buffer, or <code>-1</code> if the character does not occur.
+*/
+public int indexOf(int ch) {
+return indexOf(ch, 0, this.len);
+}
+/**
+* Returns a substring of this buffer. The substring begins at the specified
+* <code>beginIndex</code> and extends to the character at index
+* <code>endIndex - 1</code>.
+*
+* @param      beginIndex   the beginning index, inclusive.
+* @param      endIndex     the ending index, exclusive.
+* @return     the specified substring.
+* @exception  StringIndexOutOfBoundsException  if the
+*             <code>beginIndex</code> is negative, or
+*             <code>endIndex</code> is larger than the length of this
+*             buffer, or <code>beginIndex</code> is larger than
+*             <code>endIndex</code>.
+*/
+public String substring(int beginIndex, int endIndex) {
+return new String(this.buffer, beginIndex, endIndex - beginIndex);
+}
+/**
+* Returns a substring of this buffer with leading and trailing whitespace
+* omitted. The substring begins with the first non-whitespace character
+* from <code>beginIndex</code> and extends to the last
+* non-whitespace character with the index lesser than
+* <code>endIndex</code>.
+*
+* @param      beginIndex   the beginning index, inclusive.
+* @param      endIndex     the ending index, exclusive.
+* @return     the specified substring.
+* @exception  IndexOutOfBoundsException  if the
+*             <code>beginIndex</code> is negative, or
+*             <code>endIndex</code> is larger than the length of this
+*             buffer, or <code>beginIndex</code> is larger than
+*             <code>endIndex</code>.
+*/
+public String substringTrimmed(int beginIndex, int endIndex) {
+if (beginIndex < 0) {
+throw new IndexOutOfBoundsException("Negative beginIndex: "+beginIndex);
+}
+if (endIndex > this.len) {
+throw new IndexOutOfBoundsException("endIndex: "+endIndex+" > length: "+this.len);
+}
+if (beginIndex > endIndex) {
+throw new IndexOutOfBoundsException("beginIndex: "+beginIndex+" > endIndex: "+endIndex);
+}
+while (beginIndex < endIndex && HTTP.isWhitespace(this.buffer[beginIndex])) {
+beginIndex++;
+}
+while (endIndex > beginIndex && HTTP.isWhitespace(this.buffer[endIndex - 1])) {
+endIndex--;
+}
+return new String(this.buffer, beginIndex, endIndex - beginIndex);
+}
+public String toString() {
+return new String(this.buffer, 0, this.len);
+}
+}

The Tor Browser / file comparison

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

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