1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/src/share/jaxws_classes/com/sun/xml/internal/messaging/saaj/packaging/mime/util/LineInputStream.java Wed Apr 27 01:27:09 2016 +0800 1.3 @@ -0,0 +1,112 @@ 1.4 +/* 1.5 + * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. 1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 1.7 + * 1.8 + * This code is free software; you can redistribute it and/or modify it 1.9 + * under the terms of the GNU General Public License version 2 only, as 1.10 + * published by the Free Software Foundation. Oracle designates this 1.11 + * particular file as subject to the "Classpath" exception as provided 1.12 + * by Oracle in the LICENSE file that accompanied this code. 1.13 + * 1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT 1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1.17 + * version 2 for more details (a copy is included in the LICENSE file that 1.18 + * accompanied this code). 1.19 + * 1.20 + * You should have received a copy of the GNU General Public License version 1.21 + * 2 along with this work; if not, write to the Free Software Foundation, 1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 1.23 + * 1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 1.25 + * or visit www.oracle.com if you need additional information or have any 1.26 + * questions. 1.27 + */ 1.28 + 1.29 +/* 1.30 + * @(#)LineInputStream.java 1.7 03/01/07 1.31 + */ 1.32 + 1.33 + 1.34 + 1.35 +package com.sun.xml.internal.messaging.saaj.packaging.mime.util; 1.36 + 1.37 +import java.io.*; 1.38 + 1.39 +/** 1.40 + * This class is to support reading CRLF terminated lines that 1.41 + * contain only US-ASCII characters from an input stream. Provides 1.42 + * functionality that is similar to the deprecated 1.43 + * <code>DataInputStream.readLine()</code>. Expected use is to read 1.44 + * lines as String objects from a RFC822 stream. 1.45 + * 1.46 + * It is implemented as a FilterInputStream, so one can just wrap 1.47 + * this class around any input stream and read bytes from this filter. 1.48 + * 1.49 + * @author John Mani 1.50 + */ 1.51 + 1.52 +public final class LineInputStream extends FilterInputStream { 1.53 + 1.54 + private char[] lineBuffer = null; // reusable byte buffer 1.55 + 1.56 + public LineInputStream(InputStream in) { 1.57 + super(in); 1.58 + } 1.59 + 1.60 + /** 1.61 + * Read a line containing only ASCII characters from the input 1.62 + * stream. A line is terminated by a CR or NL or CR-NL sequence. 1.63 + * A common error is a CR-CR-NL sequence, which will also terminate 1.64 + * a line. 1.65 + * The line terminator is not returned as part of the returned 1.66 + * String. Returns null if no data is available. <p> 1.67 + * 1.68 + * This class is similar to the deprecated 1.69 + * <code>DataInputStream.readLine()</code> 1.70 + */ 1.71 + public String readLine() throws IOException { 1.72 + InputStream in = this.in; 1.73 + char[] buf = lineBuffer; 1.74 + 1.75 + if (buf == null) 1.76 + buf = lineBuffer = new char[128]; 1.77 + 1.78 + int c1; 1.79 + int room = buf.length; 1.80 + int offset = 0; 1.81 + 1.82 + while ((c1 = in.read()) != -1) { 1.83 + if (c1 == '\n') // Got NL, outa here. 1.84 + break; 1.85 + else if (c1 == '\r') { 1.86 + // Got CR, is the next char NL ? 1.87 + int c2 = in.read(); 1.88 + if (c2 == '\r') // discard extraneous CR 1.89 + c2 = in.read(); 1.90 + if (c2 != '\n') { 1.91 + // If not NL, push it back 1.92 + if (!(in instanceof PushbackInputStream)) 1.93 + in = this.in = new PushbackInputStream(in); 1.94 + ((PushbackInputStream)in).unread(c2); 1.95 + } 1.96 + break; // outa here. 1.97 + } 1.98 + 1.99 + // Not CR, NL or CR-NL ... 1.100 + // .. Insert the byte into our byte buffer 1.101 + if (--room < 0) { // No room, need to grow. 1.102 + buf = new char[offset + 128]; 1.103 + room = buf.length - offset - 1; 1.104 + System.arraycopy(lineBuffer, 0, buf, 0, offset); 1.105 + lineBuffer = buf; 1.106 + } 1.107 + buf[offset++] = (char)c1; 1.108 + } 1.109 + 1.110 + if ((c1 == -1) && (offset == 0)) 1.111 + return null; 1.112 + 1.113 + return String.copyValueOf(buf, 0, offset); 1.114 + } 1.115 +}