jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/xml/internal/org/jvnet/mimepull/ASCIIUtility.java@b0610cd08440

     1 /*

     2  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    26 /* FROM mail.jar */

    27 package com.sun.xml.internal.org.jvnet.mimepull;

    29 final class ASCIIUtility {

    31     // Private constructor so that this class is not instantiated

    32     private ASCIIUtility() { }

    34     /**

    35      * Convert the bytes within the specified range of the given byte

    36      * array into a signed integer in the given radix . The range extends

    37      * from <code>start</code> till, but not including <code>end</code>. <p>

    38      *

    39      * Based on java.lang.Integer.parseInt()

    40      */

    41     public static int parseInt(byte[] b, int start, int end, int radix)

    42                 throws NumberFormatException {

    43         if (b == null) {

    44             throw new NumberFormatException("null");

    45         }

    47         int result = 0;

    48         boolean negative = false;

    49         int i = start;

    50         int limit;

    51         int multmin;

    52         int digit;

    54         if (end > start) {

    55             if (b[i] == '-') {

    56                 negative = true;

    57                 limit = Integer.MIN_VALUE;

    58                 i++;

    59             } else {

    60                 limit = -Integer.MAX_VALUE;

    61             }

    62             multmin = limit / radix;

    63             if (i < end) {

    64                 digit = Character.digit((char)b[i++], radix);

    65                 if (digit < 0) {

    66                     throw new NumberFormatException(

    67                         "illegal number: " + toString(b, start, end)

    68                         );

    69                 } else {

    70                     result = -digit;

    71                 }

    72             }

    73             while (i < end) {

    74                 // Accumulating negatively avoids surprises near MAX_VALUE

    75                 digit = Character.digit((char)b[i++], radix);

    76                 if (digit < 0) {

    77                     throw new NumberFormatException("illegal number");

    78                 }

    79                 if (result < multmin) {

    80                     throw new NumberFormatException("illegal number");

    81                 }

    82                 result *= radix;

    83                 if (result < limit + digit) {

    84                     throw new NumberFormatException("illegal number");

    85                 }

    86                 result -= digit;

    87             }

    88         } else {

    89             throw new NumberFormatException("illegal number");

    90         }

    91         if (negative) {

    92             if (i > start + 1) {

    93                 return result;

    94             } else {    /* Only got "-" */

    95                 throw new NumberFormatException("illegal number");

    96             }

    97         } else {

    98             return -result;

    99         }

   100     }

   102     /**

   103      * Convert the bytes within the specified range of the given byte

   104      * array into a String. The range extends from <code>start</code>

   105      * till, but not including <code>end</code>. <p>

   106      */

   107     public static String toString(byte[] b, int start, int end) {

   108         int size = end - start;

   109         char[] theChars = new char[size];

   111         for (int i = 0, j = start; i < size; ) {

   112             theChars[i++] = (char)(b[j++]&0xff);

   113         }

   115         return new String(theChars);

   116     }

   118 }

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