131 lines
4.4 KiB
Java
131 lines
4.4 KiB
Java
/*
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* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.xml.internal.ws.util;
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import java.io.InputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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/**
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* Copied from mail.jar.
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*/
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public class ASCIIUtility {
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// Private constructor so that this class is not instantiated
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private ASCIIUtility() { }
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/**
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* Convert the bytes within the specified range of the given byte
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* array into a signed integer in the given radix . The range extends
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* from <code>start</code> till, but not including <code>end</code>. <p>
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*
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* Based on java.lang.Integer.parseInt()
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*/
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public static int parseInt(byte[] b, int start, int end, int radix)
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throws NumberFormatException {
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if (b == null)
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throw new NumberFormatException("null");
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int result = 0;
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boolean negative = false;
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int i = start;
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int limit;
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int multmin;
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int digit;
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if (end > start) {
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if (b[i] == '-') {
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negative = true;
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limit = Integer.MIN_VALUE;
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i++;
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} else {
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limit = -Integer.MAX_VALUE;
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}
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multmin = limit / radix;
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if (i < end) {
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digit = Character.digit((char)b[i++], radix);
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if (digit < 0) {
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throw new NumberFormatException(
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"illegal number: " + toString(b, start, end)
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);
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} else {
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result = -digit;
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}
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}
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while (i < end) {
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// Accumulating negatively avoids surprises near MAX_VALUE
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digit = Character.digit((char)b[i++], radix);
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if (digit < 0) {
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throw new NumberFormatException("illegal number");
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}
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if (result < multmin) {
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throw new NumberFormatException("illegal number");
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}
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result *= radix;
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if (result < limit + digit) {
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throw new NumberFormatException("illegal number");
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}
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result -= digit;
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}
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} else {
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throw new NumberFormatException("illegal number");
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}
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if (negative) {
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if (i > start + 1) {
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return result;
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} else { /* Only got "-" */
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throw new NumberFormatException("illegal number");
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}
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} else {
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return -result;
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}
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}
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/**
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* Convert the bytes within the specified range of the given byte
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* array into a String. The range extends from <code>start</code>
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* till, but not including <code>end</code>. <p>
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*/
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public static String toString(byte[] b, int start, int end) {
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int size = end - start;
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char[] theChars = new char[size];
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for (int i = 0, j = start; i < size; )
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theChars[i++] = (char)(b[j++]&0xff);
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return new String(theChars);
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}
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public static void copyStream(InputStream is, OutputStream out) throws IOException {
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int size = 1024;
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byte[] buf = new byte[size];
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int len;
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while ((len = is.read(buf, 0, size)) != -1)
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out.write(buf, 0, len);
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}
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}
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