jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/xml/internal/org/jvnet/mimepull/LineInputStream.java@8f2986ff0235

8013021: Rebase 8005432 & 8003542 against the latest jdk8/jaxws
8003542: Improve processing of MTOM attachments
8005432: Update access to JAX-WS
Reviewed-by: mullan

     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 import java.io.*;

    31 /**

    32  * This class is to support reading CRLF terminated lines that

    33  * contain only US-ASCII characters from an input stream. Provides

    34  * functionality that is similar to the deprecated

    35  * <code>DataInputStream.readLine()</code>. Expected use is to read

    36  * lines as String objects from a RFC822 stream.

    37  *

    38  * It is implemented as a FilterInputStream, so one can just wrap

    39  * this class around any input stream and read bytes from this filter.

    40  *

    41  * @author John Mani

    42  */

    44 final class LineInputStream extends FilterInputStream {

    46     private char[] lineBuffer = null; // reusable byte buffer

    47     private static int MAX_INCR = 1024*1024;    // 1MB

    49     public LineInputStream(InputStream in) {

    50         super(in);

    51     }

    53     /**

    54      * Read a line containing only ASCII characters from the input

    55      * stream. A line is terminated by a CR or NL or CR-NL sequence.

    56      * A common error is a CR-CR-NL sequence, which will also terminate

    57      * a line.

    58      * The line terminator is not returned as part of the returned

    59      * String. Returns null if no data is available. <p>

    60      *

    61      * This class is similar to the deprecated

    62      * <code>DataInputStream.readLine()</code>

    63      */

    64     public String readLine() throws IOException {

    65         //InputStream in = this.in;

    66         char[] buf = lineBuffer;

    68         if (buf == null) {

    69             buf = lineBuffer = new char[128];

    70         }

    72         int c1;

    73         int room = buf.length;

    74         int offset = 0;

    76         while ((c1 = in.read()) != -1) {

    77             if (c1 == '\n') {

    78                 break;

    79             } else if (c1 == '\r') {

    80                 // Got CR, is the next char NL ?

    81                 boolean twoCRs = false;

    82                 if (in.markSupported()) {

    83                     in.mark(2);

    84                 }

    85                 int c2 = in.read();

    86                 if (c2 == '\r') {               // discard extraneous CR

    87                     twoCRs = true;

    88                     c2 = in.read();

    89                 }

    90                 if (c2 != '\n') {

    91                     /*

    92                      * If the stream supports it (which we hope will always

    93                      * be the case), reset to after the first CR.  Otherwise,

    94                      * we wrap a PushbackInputStream around the stream so we

    95                      * can unread the characters we don't need.  The only

    96                      * problem with that is that the caller might stop

    97                      * reading from this LineInputStream, throw it away,

    98                      * and then start reading from the underlying stream.

    99                      * If that happens, the pushed back characters will be

   100                      * lost forever.

   101                      */

   102                     if (in.markSupported()) {

   103                         in.reset();

   104                     } else {

   105                         if (!(in instanceof PushbackInputStream)) {

   106                             in /*= this.in*/ = new PushbackInputStream(in, 2);

   107                         }

   108                         if (c2 != -1) {

   109                             ((PushbackInputStream)in).unread(c2);

   110                         }

   111                         if (twoCRs) {

   112                             ((PushbackInputStream)in).unread('\r');

   113                         }

   114                     }

   115                 }

   116                 break; // outa here.

   117             }

   119             // Not CR, NL or CR-NL ...

   120             // .. Insert the byte into our byte buffer

   121             if (--room < 0) { // No room, need to grow.

   122                 if (buf.length < MAX_INCR) {

   123                     buf = new char[buf.length * 2];

   124                 } else {

   125                     buf = new char[buf.length + MAX_INCR];

   126                 }

   127                 room = buf.length - offset - 1;

   128                 System.arraycopy(lineBuffer, 0, buf, 0, offset);

   129                 lineBuffer = buf;

   130             }

   131             buf[offset++] = (char)c1;

   132         }

   134         if ((c1 == -1) && (offset == 0)) {

   135             return null;

   136         }

   138         return String.copyValueOf(buf, 0, offset);

   139     }

   140 }

Mercurial > jdk8-mips64-public > jaxws / file revision

src/share/jaxws_classes/com/sun/xml/internal/org/jvnet/mimepull/LineInputStream.java@8f2986ff0235

src/share/jaxws_classes/com/sun/xml/internal/org/jvnet/mimepull/LineInputStream.java