1 /*
   2  * Copyright (c) 2015, 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  */
  25 package javax.xml.catalog;
  26 
  27 import java.net.URL;
  28 
  29 /**
  30  * Represents a rewriteSystem entry.
  31  *
  32  * @since 9
  33  */
  34 final class RewriteSystem extends BaseEntry {
  35     String systemIdStartString;
  36     URL rewritePrefix;
  37 
  38     /**
  39      * Construct a rewriteSystem entry.
  40      *
  41      * @param systemIdStartString The systemIdStartString attribute.
  42      * @param rewritePrefix The rewritePrefix attribute.
  43      */
  44     public RewriteSystem(String base, String systemIdStartString, String rewritePrefix) {
  45         super(CatalogEntryType.REWRITESYSTEM, base);
  46         setSystemIdStartString (systemIdStartString);
  47         setRewritePrefix(rewritePrefix);
  48     }
  49 
  50     /**
  51      * Set the systemIdStartString attribute.
  52      * @param systemIdStartString The systemIdStartString attribute value.
  53      */
  54     public void setSystemIdStartString (String systemIdStartString) {
  55         CatalogMessages.reportNPEOnNull("systemIdStartString", systemIdStartString);
  56         this.systemIdStartString = Normalizer.normalizeURI(systemIdStartString);
  57     }
  58 
  59     /**
  60      * Set the rewritePrefix attribute. If the value of the rewritePrefix attribute
  61      * is relative, it must be made absolute with respect to the base URI currently in effect.
  62      * @param rewritePrefix The rewritePrefix attribute value.
  63      */
  64     public void setRewritePrefix(String rewritePrefix) {
  65         this.rewritePrefix = verifyURI("setRewritePrefix", baseURI, rewritePrefix);
  66     }
  67 
  68     /**
  69      * Get the systemIdStartString attribute.
  70      * @return The systemIdStartString
  71      */
  72     public String getSystemIdStartString () {
  73         return systemIdStartString;
  74     }
  75     /**
  76      * Get the rewritePrefix attribute.
  77      * @return The rewritePrefix attribute value.
  78      */
  79     public URL getRewritePrefix() {
  80         return rewritePrefix;
  81     }
  82 
  83 
  84     /**
  85      * Try to match the specified systemId with the entry. Return the match if it
  86      * is successful and the length of the systemIdStartString is longer than the
  87      * longest of any previous match.
  88      *
  89      * @param systemId The systemId to be matched.
  90      * @param currentMatch The length of systemIdStartString of previous match if any.
  91      * @return The replacement URI if the match is successful, null if not.
  92      */
  93     public String match(String systemId, int currentMatch) {
  94         if (systemIdStartString.length() <= systemId.length() &&
  95                 systemIdStartString.equals(systemId.substring(0, systemIdStartString.length()))) {
  96             if (currentMatch < systemIdStartString.length()) {
  97                 String prefix = rewritePrefix.toExternalForm();
  98                 if (!prefix.endsWith(SLASH) && !systemId.startsWith(SLASH)) {
  99                     return prefix + SLASH + systemId.substring(systemIdStartString.length());
 100                 } else {
 101                     return prefix + systemId.substring(systemIdStartString.length());
 102                 }
 103             }
 104         }
 105         return null;
 106     }
 107 
 108     /**
 109      * Try to match the specified systemId with the entry.
 110      *
 111      * @param systemId The systemId to be matched.
 112      * @return The replacement URI if the match is successful, null if not.
 113      */
 114     @Override
 115     public String match(String systemId) {
 116         return match(systemId, 0);
 117     }
 118 }