1 files changed, 94 insertions, 0 deletions
diff --git a/ridljar/com/sun/star/lib/util/UrlToFileMapper.java b/ridljar/com/sun/star/lib/util/UrlToFileMapper.java
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+++ b/ridljar/com/sun/star/lib/util/UrlToFileMapper.java
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+/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+package com.sun.star.lib.util;
+
+import java.io.File;
+import java.io.UnsupportedEncodingException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.net.URLEncoder;
+
+/**
+ * Maps Java URL representations to File representations, on any Java version.
+ *
+ * This used to be used to do URL to File mapping in pre-Java1.4 days, but since
+ * we now require Java 1.5, it is largely unnecessary.
+ *
+ * @since UDK 3.2.8
+ */
+public final class UrlToFileMapper {
+
+    /**
+     * Maps Java URL representations to File representations.
+     *
+     * @param url some URL, possibly null.
+     * @return a corresponding File, or null on failure.
+     */
+    public static File mapUrlToFile(URL url) {
+        if (url == null) {
+            return null;
+        } else {
+            try {
+                // where encodedUrl is url.toString(), but since that may contain
+                // unsafe characters (e.g., space, " "), it is encoded, as otherwise
+                // the URI constructor might throw java.net.URISyntaxException (in
+                // Java 1.5, URL.toURI might be used instead).
+                String encodedUrl = encode(url.toString());
+                URI uri = new URI(encodedUrl);
+                try {
+                    return new File(uri);
+                } catch (IllegalArgumentException e) {
+                    return null;
+                }
+            } catch (URISyntaxException ex) {
+                throw new RuntimeException(ex); // should never happen
+            }
+        }
+    }
+
+    private static String encode(String url) {
+        StringBuffer buf = new StringBuffer(url.length());
+        for (int i = 0; i < url.length(); ++i) {
+            char c = url.charAt(i);
+            // The RFC 2732 <uric> characters: !$&'()*+,-./:;=?@[]_~ plus digits
+            // and letters; additionally, do not encode % again.
+            if (c >= 'a' && c <= 'z' || c >= '?' && c <= '['
+                || c >= '$' && c <= ';' || c == '!' || c == '=' || c == ']'
+                || c == '_' || c == '~')
+            {
+                buf.append(c);
+            } else if (c == ' ') {
+                buf.append("%20");
+            } else {
+                try {
+                    String enc = URLEncoder.encode(Character.toString(c), "UTF-8");
+                    buf.append(enc);
+                } catch (UnsupportedEncodingException e) {
+                    throw new RuntimeException(e); // should never happen
+                }
+            }
+        }
+        return buf.toString();
+    }
+
+    private UrlToFileMapper() {}
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */