MetaZonesParseHandler.java revision 9330:8b1f1c2a400f 
1/*
2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package build.tools.cldrconverter;
27
28import java.io.File;
29import java.io.IOException;
30import org.xml.sax.Attributes;
31import org.xml.sax.InputSource;
32import org.xml.sax.SAXException;
33
34class MetaZonesParseHandler extends AbstractLDMLHandler<String> {
35    private String tzid, metazone;
36
37    MetaZonesParseHandler() {
38    }
39
40    @Override
41    public InputSource resolveEntity(String publicID, String systemID) throws IOException, SAXException {
42        // avoid HTTP traffic to unicode.org
43        if (systemID.startsWith(CLDRConverter.SPPL_LDML_DTD_SYSTEM_ID)) {
44            return new InputSource((new File(CLDRConverter.LOCAL_SPPL_LDML_DTD)).toURI().toString());
45        }
46        return null;
47    }
48
49    // metaZone: ID -> metazone
50    // per locale: ID -> names, metazone -> names
51    @Override
52    public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
53        switch (qName) {
54        case "timezone":
55            tzid = attributes.getValue("type");
56            pushContainer(qName, attributes);
57            break;
58
59        case "usesMetazone":
60            // Ignore any historical zone names (for now)
61            if (attributes.getValue("to") == null) {
62                metazone = attributes.getValue("mzone");
63            }
64            pushIgnoredContainer(qName);
65            break;
66
67        case "version":
68        case "generation":
69            pushIgnoredContainer(qName);
70            break;
71
72        default:
73            // treat anything else as a container
74            pushContainer(qName, attributes);
75            break;
76        }
77    }
78
79    @Override
80    public void endElement(String uri, String localName, String qName) throws SAXException {
81        assert qName.equals(currentContainer.getqName()) : "current=" + currentContainer.getqName() + ", param=" + qName;
82        switch (qName) {
83        case "timezone":
84            if (tzid == null || metazone == null) {
85                throw new InternalError();
86            }
87            put(tzid, metazone);
88            break;
89        }
90        currentContainer = currentContainer.getParent();
91    }
92}
93