Mercurial > jdk8-mips64-public > jaxws / annotate

src/share/jaxws_classes/com/sun/xml/internal/messaging/saaj/util/XMLDeclarationParser.java@9c07ef4934dd (annotated)

src/share/jaxws_classes/com/sun/xml/internal/messaging/saaj/util/XMLDeclarationParser.java

Thu, 31 Aug 2017 15:18:52 +0800

author
aoqi
date
Thu, 31 Aug 2017 15:18:52 +0800
changeset 637
9c07ef4934dd
parent 368
0989ad8c0860
parent 0
373ffda63c9a
permissions
-rw-r--r--

merge

aoqi@0 1 /*
aoqi@0 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0 4 *
aoqi@0 5 * This code is free software; you can redistribute it and/or modify it
aoqi@0 6 * under the terms of the GNU General Public License version 2 only, as
aoqi@0 7 * published by the Free Software Foundation. Oracle designates this
aoqi@0 8 * particular file as subject to the "Classpath" exception as provided
aoqi@0 9 * by Oracle in the LICENSE file that accompanied this code.
aoqi@0 10 *
aoqi@0 11 * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0 14 * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0 15 * accompanied this code).
aoqi@0 16 *
aoqi@0 17 * You should have received a copy of the GNU General Public License version
aoqi@0 18 * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0 20 *
aoqi@0 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0 22 * or visit www.oracle.com if you need additional information or have any
aoqi@0 23 * questions.
aoqi@0 24 */
aoqi@0 25
aoqi@0 26 package com.sun.xml.internal.messaging.saaj.util;
aoqi@0 27
aoqi@0 28 import java.io.*;
aoqi@0 29
aoqi@0 30 import javax.xml.transform.TransformerException;
aoqi@0 31
aoqi@0 32 /*
aoqi@0 33 * Class that parses the very first construct in the document i.e.
aoqi@0 34 * <?xml ... ?>
aoqi@0 35 *
aoqi@0 36 * @author Panos Kougiouris (panos@acm.org)
aoqi@0 37 * @version
aoqi@0 38 */
aoqi@0 39
aoqi@0 40 public class XMLDeclarationParser {
aoqi@0 41 private String m_encoding;
aoqi@0 42 private PushbackReader m_pushbackReader;
aoqi@0 43 private boolean m_hasHeader; // preserve the case where no XML Header exists
aoqi@0 44 private String xmlDecl = null;
aoqi@0 45 static String gt16 = null;
aoqi@0 46 static String utf16Decl = null;
aoqi@0 47 static {
aoqi@0 48 try {
aoqi@0 49 gt16 = new String(">".getBytes("utf-16"));
aoqi@0 50 utf16Decl = new String("<?xml".getBytes("utf-16"));
aoqi@0 51 } catch (Exception e) {}
aoqi@0 52 }
aoqi@0 53
aoqi@0 54 //---------------------------------------------------------------------
aoqi@0 55
aoqi@0 56 public XMLDeclarationParser(PushbackReader pr)
aoqi@0 57 {
aoqi@0 58 m_pushbackReader = pr;
aoqi@0 59 m_encoding = "utf-8";
aoqi@0 60 m_hasHeader = false;
aoqi@0 61 }
aoqi@0 62
aoqi@0 63 //---------------------------------------------------------------------
aoqi@0 64 public String getEncoding()
aoqi@0 65 {
aoqi@0 66 return m_encoding;
aoqi@0 67 }
aoqi@0 68
aoqi@0 69 public String getXmlDeclaration() {
aoqi@0 70 return xmlDecl;
aoqi@0 71 }
aoqi@0 72
aoqi@0 73 //---------------------------------------------------------------------
aoqi@0 74
aoqi@0 75 public void parse() throws TransformerException, IOException
aoqi@0 76 {
aoqi@0 77 int c = 0;
aoqi@0 78 int index = 0;
aoqi@0 79 char[] aChar = new char[65535];
aoqi@0 80 StringBuffer xmlDeclStr = new StringBuffer();
aoqi@0 81 while ((c = m_pushbackReader.read()) != -1) {
aoqi@0 82 aChar[index] = (char)c;
aoqi@0 83 xmlDeclStr.append((char)c);
aoqi@0 84 index++;
aoqi@0 85 if (c == '>') {
aoqi@0 86 break;
aoqi@0 87 }
aoqi@0 88 }
aoqi@0 89 int len = index;
aoqi@0 90
aoqi@0 91 String decl = xmlDeclStr.toString();
aoqi@0 92 boolean utf16 = false;
aoqi@0 93 boolean utf8 = false;
aoqi@0 94
aoqi@0 95 int xmlIndex = decl.indexOf(utf16Decl);
aoqi@0 96 if (xmlIndex > -1) {
aoqi@0 97 utf16 = true;
aoqi@0 98 } else {
aoqi@0 99 xmlIndex = decl.indexOf("<?xml");
aoqi@0 100 if (xmlIndex > -1) {
aoqi@0 101 utf8 = true;
aoqi@0 102 }
aoqi@0 103 }
aoqi@0 104
aoqi@0 105 // no XML decl
aoqi@0 106 if (!utf16 && !utf8) {
aoqi@0 107 m_pushbackReader.unread(aChar, 0, len);
aoqi@0 108 return;
aoqi@0 109 }
aoqi@0 110 m_hasHeader = true;
aoqi@0 111
aoqi@0 112 if (utf16) {
aoqi@0 113 xmlDecl = new String(decl.getBytes(), "utf-16");
aoqi@0 114 xmlDecl = xmlDecl.substring(xmlDecl.indexOf("<"));
aoqi@0 115 } else {
aoqi@0 116 xmlDecl = decl;
aoqi@0 117 }
aoqi@0 118 // do we want to check that there are no other characters preceeding <?xml
aoqi@0 119 if (xmlIndex != 0) {
aoqi@0 120 throw new IOException("Unexpected characters before XML declaration");
aoqi@0 121 }
aoqi@0 122
aoqi@0 123 int versionIndex = xmlDecl.indexOf("version");
aoqi@0 124 if (versionIndex == -1) {
aoqi@0 125 throw new IOException("Mandatory 'version' attribute Missing in XML declaration");
aoqi@0 126 }
aoqi@0 127
aoqi@0 128 // now set
aoqi@0 129 int encodingIndex = xmlDecl.indexOf("encoding");
aoqi@0 130 if (encodingIndex == -1) {
aoqi@0 131 return;
aoqi@0 132 }
aoqi@0 133
aoqi@0 134 if (versionIndex > encodingIndex) {
aoqi@0 135 throw new IOException("The 'version' attribute should preceed the 'encoding' attribute in an XML Declaration");
aoqi@0 136 }
aoqi@0 137
aoqi@0 138 int stdAloneIndex = xmlDecl.indexOf("standalone");
aoqi@0 139 if ((stdAloneIndex > -1) && ((stdAloneIndex < versionIndex) || (stdAloneIndex < encodingIndex))) {
aoqi@0 140 throw new IOException("The 'standalone' attribute should be the last attribute in an XML Declaration");
aoqi@0 141 }
aoqi@0 142
aoqi@0 143 int eqIndex = xmlDecl.indexOf("=", encodingIndex);
aoqi@0 144 if (eqIndex == -1) {
aoqi@0 145 throw new IOException("Missing '=' character after 'encoding' in XML declaration");
aoqi@0 146 }
aoqi@0 147
aoqi@0 148 m_encoding = parseEncoding(xmlDecl, eqIndex);
aoqi@0 149 if(m_encoding.startsWith("\"")){
aoqi@0 150 m_encoding = m_encoding.substring(m_encoding.indexOf("\"")+1, m_encoding.lastIndexOf("\""));
aoqi@0 151 } else if(m_encoding.startsWith("\'")){
aoqi@0 152 m_encoding = m_encoding.substring(m_encoding.indexOf("\'")+1, m_encoding.lastIndexOf("\'"));
aoqi@0 153 }
aoqi@0 154 }
aoqi@0 155
aoqi@0 156 //--------------------------------------------------------------------
aoqi@0 157
aoqi@0 158 public void writeTo(Writer wr) throws IOException {
aoqi@0 159 if (!m_hasHeader) return;
aoqi@0 160 wr.write(xmlDecl.toString());
aoqi@0 161 }
aoqi@0 162
aoqi@0 163 private String parseEncoding(String xmlDeclFinal, int eqIndex) throws IOException {
aoqi@0 164 java.util.StringTokenizer strTok = new java.util.StringTokenizer(
aoqi@0 165 xmlDeclFinal.substring(eqIndex + 1));
aoqi@0 166 if (strTok.hasMoreTokens()) {
aoqi@0 167 String encodingTok = strTok.nextToken();
aoqi@0 168 int indexofQ = encodingTok.indexOf("?");
aoqi@0 169 if (indexofQ > -1) {
aoqi@0 170 return encodingTok.substring(0,indexofQ);
aoqi@0 171 } else {
aoqi@0 172 return encodingTok;
aoqi@0 173 }
aoqi@0 174 } else {
aoqi@0 175 throw new IOException("Error parsing 'encoding' attribute in XML declaration");
aoqi@0 176 }
aoqi@0 177 }
aoqi@0 178
aoqi@0 179 }

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