1 /**
2 * This file Copyright (c) 2016 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.config.source.yaml;
35
36 import info.magnolia.resourceloader.Resource;
37
38 import org.yaml.snakeyaml.error.Mark;
39 import org.yaml.snakeyaml.error.MarkedYAMLException;
40 import org.yaml.snakeyaml.error.YAMLException;
41
42 /**
43 * Augments {@link YAMLException} with information about resource in which it has occurred.
44 */
45 public class YamlReaderException extends RuntimeException {
46
47 public YamlReaderException(YAMLException cause, Resource relatedResource) {
48 super(formatYamlExceptionMessage(relatedResource, cause), cause);
49 }
50
51 private static String formatYamlExceptionMessage(Resource res, YAMLException ye) {
52 final StringBuilder sb = new StringBuilder();
53 sb.append("YAML parsing error in ").append(res);
54 if (ye instanceof MarkedYAMLException) {
55 final Mark mark = ((MarkedYAMLException) ye).getProblemMark();
56 final String snippet = mark != null ? mark.get_snippet() : null;
57 final String problem = ((MarkedYAMLException) ye).getProblem();
58 if (mark != null) {
59 sb.append(" at line ").append(mark.getLine()).append(", column ").append(mark.getColumn());
60 }
61 if (snippet != null) {
62 sb.append(":\n");
63 sb.append(snippet);
64 }
65 if (problem != null) {
66 // TODO SnakeYaml tends to be a bit nasty about this "problem", e.g org.yaml.snakeyaml.scanner.ScannerImpl.fetchMoreTokens() prints the actual char THEN it's representation, so you end up with a big fat actual tab in the message instead of JUST \t(TAB)
67 // See https://code.google.com/p/snakeyaml/issues/detail?id=209
68 sb.append(": ").append(problem.replaceAll("\\s*\\t\\s*", " "));
69 }
70 } else {
71 sb.append(": ").append(ye.getMessage());
72 }
73
74 return sb.toString();
75 }
76 }