Caldavsync Sources: comparison src/net/fortuna/ical4j/util/Uris.java

--1:000000000000
+:8565d4344098
+/**
+* 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 / file comparison

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

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