1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.mail.resolver;
18
19 import org.apache.commons.mail.DataSourceResolver;
20
21 /**
22 * Base class for various resolvers.
23 *
24 * @since 1.3
25 */
26 public abstract class DataSourceBaseResolver implements DataSourceResolver
27 {
28 /** shall we ignore resources not found or complain with an exception */
29 private final boolean lenient;
30
31 /**
32 * Constructor.
33 */
34 public DataSourceBaseResolver()
35 {
36 this.lenient = false;
37 }
38
39 /**
40 * Constructor.
41 *
42 * @param lenient shall we ignore resources not found or throw an exception?
43 */
44 public DataSourceBaseResolver(final boolean lenient)
45 {
46 this.lenient = lenient;
47 }
48
49 /**
50 * Shall we ignore resources not found or throw an exception?
51 *
52 * @return the lenient flag
53 */
54 public boolean isLenient()
55 {
56 return lenient;
57 }
58
59 /**
60 * Is this a content id?
61 *
62 * @param resourceLocation the resource location
63 * @return true if it is a CID
64 */
65 protected boolean isCid(final String resourceLocation)
66 {
67 return resourceLocation.startsWith("cid:");
68 }
69
70 /**
71 * Is this a file URL?
72 *
73 * @param urlString the URL string
74 * @return true if it is a file URL
75 */
76 protected boolean isFileUrl(final String urlString)
77 {
78 return urlString.startsWith("file:/");
79 }
80
81 /**
82 * Is this a HTTP/HTTPS URL?
83 *
84 * @param urlString the URL string
85 * @return true if it is a HTTP/HTTPS URL
86 */
87 protected boolean isHttpUrl(final String urlString)
88 {
89 return urlString.startsWith("http://") || urlString.startsWith("https://");
90 }
91 }