Caldavsync Sources: src/net/fortuna/ical4j/util/Uris.java@fb9019fb1bf7 (annotated)

src/net/fortuna/ical4j/util/Uris.java@fb9019fb1bf7 (annotated)

src/net/fortuna/ical4j/util/Uris.java

Tue, 10 Feb 2015 18:12:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Tue, 10 Feb 2015 18:12:00 +0100
changeset 0: fb9019fb1bf7
permissions: -rw-r--r--

Import initial revisions of existing project AndroidCaldavSyncAdapater,
forked from upstream repository at 27e8a0f8495c92e0780d450bdf0c7cec77a03a55.

 /**
  * Copyright (c) 2012, Ben Fortuna
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  *  o Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *
  *  o Redistributions in binary form must reproduce the above copyright
  * notice, this list of conditions and the following disclaimer in the
  * documentation and/or other materials provided with the distribution.
  *
  *  o Neither the name of Ben Fortuna nor the names of any other contributors
  * may be used to endorse or promote products derived from this software
  * without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 package net.fortuna.ical4j.util;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.util.regex.Pattern;
 /**
  * $Id$
  *
  * Created on 11/09/2005
  *
  * Utility methods for working with URIs.
  * @author Ben Fortuna
  */
 public final class Uris {
     /**
      * URI Scheme used when relaxed parsing is enabled and the given input stream lead to an invalid URI.
      */
     public static final String INVALID_SCHEME = "net.fortunal.ical4j.invalid";
     private static final Pattern CID_PATTERN = Pattern.compile("(?i)^cid:.*");
     private static final Pattern NOTES_CID_REPLACEMENT_PATTERN = Pattern.compile("[<>]");
     /**
      * Constructor made private to enforce static nature.
      */
     private Uris() {
     }
     /**
      * Encodes the specified URI string using the UTF-8 charset. In the event that an exception is thrown, the specifed
      * URI string is returned unmodified.
      * @param s a URI string
      * @return an encoded URI string
      */
     public static String encode(final String s) {
         /*
          * try { return URLEncoder.encode(s, ENCODING_CHARSET); } catch (UnsupportedEncodingException use) {
          * log.error("Error ocurred encoding URI [" + s + "]", use); }
          */
         /*
          * Lotus Notes does not correctly strip angle brackets from cid uris. From RFC2392: A "cid" URL is converted to
          * the corresponding Content-ID message header [MIME] by removing the "cid:" prefix, converting the % encoded
          * character to their equivalent US-ASCII characters, and enclosing the remaining parts with an angle bracket
          * pair, "<" and ">". For example, "cid:foo4%25foo1@bar.net" corresponds to Content-ID: <foo4%25foo1@bar.net>
          * Reversing the process and converting URL special characters to their % encodings produces the original cid. A
          * "mid" URL is converted to a Message-ID or Message-ID/Content-ID pair in a similar fashion.
          */
         if (CompatibilityHints.isHintEnabled(CompatibilityHints.KEY_NOTES_COMPATIBILITY)
         		&& CID_PATTERN.matcher(s).matches()) {
             return NOTES_CID_REPLACEMENT_PATTERN.matcher(s).replaceAll("");
         }
         return s;
     }
     /**
      * Decodes the specified URI string using the UTF-8 charset. In the event that an exception is thrown, the specifed
      * URI string is returned unmodified.
      * @param s a URI string
      * @return an encoded URI string
      */
     public static String decode(final String s) {
         /*
          * try { return URLDecoder.decode(s, ENCODING_CHARSET); } catch (UnsupportedEncodingException use) {
          * log.error("Error ocurred decoding URI [" + s + "]", use); }
          */
         return s;
     }
     /**
      * Attempts to create a URI instance and will optionally swallow any resulting URISyntaxException depending on
      * configured {@link CompatibilityHints}. Will also automatically attempt encoding of the string representation for
      * greater compatibility.
      * <p>When relaxed parsing is enabled and if the string representation is not valid, a second URI creation attempt is made
      *  by extracting the scheme from the scheme specific part and URI encoding that later part. For example,
      *  "mailto: joe smith@example.com" becomes "mailto:joe%20smith@example.com".<p>
      * <p>If the second attempts also leads to a {@code URISyntaxException}, an opaque URI is constructed with a scheme
      *  of {@code Uris.INVALID_SCHEME} and a value corresponding to the initial representation.</p>
      *
      * @param s a string representation of a URI.
      * @return a URI instance, which may not correspond to the URI string if a valid
      *  URI string is not specified and relaxed parsing is enabled.
      * @throws URISyntaxException if a valid URI string is not specified and relaxed parsing is disabled
      */
     public static URI create(final String s) throws URISyntaxException {
         try {
             return new URI(encode(s));
         }
         catch (URISyntaxException use) {
             if (CompatibilityHints
                     .isHintEnabled(CompatibilityHints.KEY_RELAXED_PARSING)) {
                 String encoded = encode(s);
                 int index = encoded.indexOf(':');
                 if (index != -1 && index < encoded.length() -1) {
                     try {
                         return new URI(encoded.substring(0, index), encoded.substring(index + 1), null);
                     } catch (URISyntaxException use2) {
                     }
                 }
                 try {
                     return new URI(INVALID_SCHEME, s, null);
                 } catch (URISyntaxException use2) {
                     // should not happen as we are building an opaque URI
                     throw new IllegalArgumentException("Could not build URI from " + s);
                 }
             }
             throw use;
         }
     }
 }

Caldavsync Sources / annotate

src/net/fortuna/ical4j/util/Uris.java@fb9019fb1bf7 (annotated)

src/net/fortuna/ical4j/util/Uris.java