01: /*
02: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
03: *
04: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
05: *
06: * The contents of this file are subject to the terms of either the GNU
07: * General Public License Version 2 only ("GPL") or the Common
08: * Development and Distribution License("CDDL") (collectively, the
09: * "License"). You may not use this file except in compliance with the
10: * License. You can obtain a copy of the License at
11: * http://www.netbeans.org/cddl-gplv2.html
12: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
13: * specific language governing permissions and limitations under the
14: * License. When distributing the software, include this License Header
15: * Notice in each file and include the License file at
16: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
17: * particular file as subject to the "Classpath" exception as provided
18: * by Sun in the GPL Version 2 section of the License file that
19: * accompanied this code. If applicable, add the following below the
20: * License Header, with the fields enclosed by brackets [] replaced by
21: * your own identifying information:
22: * "Portions Copyrighted [year] [name of copyright owner]"
23: *
24: * Contributor(s):
25: *
26: * The Original Software is NetBeans. The Initial Developer of the Original
27: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
28: * Microsystems, Inc. All Rights Reserved.
29: *
30: * If you wish your version of this file to be governed by only the CDDL
31: * or only the GPL Version 2, indicate your decision by adding
32: * "[Contributor] elects to include this software in this distribution
33: * under the [CDDL or GPL Version 2] license." If you do not indicate a
34: * single choice of license, a recipient has the option to distribute
35: * your version of this file under either the CDDL, the GPL Version 2 or
36: * to extend the choice of license to its licensees as provided above.
37: * However, if you add GPL Version 2 code and therefore, elected the GPL
38: * Version 2 license, then the option applies only if the new code is
39: * made subject to such option by the copyright holder.
40: */
41: package org.netbeans.modules.openide.loaders;
42:
43: import java.nio.charset.Charset;
44: import java.util.logging.Logger;
45: import org.netbeans.spi.queries.FileEncodingQueryImplementation;
46: import org.openide.filesystems.FileObject;
47: import org.openide.filesystems.FileUtil;
48: import org.openide.loaders.DataFolder;
49: import org.openide.loaders.DataObject;
50: import org.openide.loaders.DataObjectNotFoundException;
51:
52: /**
53: *
54: * @author Tomas Zezula
55: */
56: public class DataObjectEncodingQueryImplementation extends
57: FileEncodingQueryImplementation {
58: private static ThreadLocal<DataFolder> TARGET = new ThreadLocal<DataFolder>();
59: private static final Logger LOG = Logger
60: .getLogger(DataObjectEncodingQueryImplementation.class
61: .getName());
62:
63: /** Creates a new instance of DataObjectEncodingQueryImplementation */
64: public DataObjectEncodingQueryImplementation() {
65: }
66:
67: public static DataFolder enterIgnoreTargetFolder(DataFolder df) {
68: DataFolder prev = TARGET.get();
69: TARGET.set(df);
70: return prev;
71: }
72:
73: public static void exitIgnoreTargetFolder(DataFolder prev) {
74: TARGET.set(prev);
75: }
76:
77: public Charset getEncoding(FileObject file) {
78: assert file != null;
79: DataFolder df = TARGET.get();
80: if (df != null && df.getPrimaryFile().equals(file.getParent())) {
81: // do not create new data objects
82: return null;
83: }
84: try {
85: DataObject dobj = DataObject.find(file);
86: FileEncodingQueryImplementation impl = dobj.getLookup()
87: .lookup(FileEncodingQueryImplementation.class);
88: if (impl == null) {
89: return null;
90: }
91: return impl.getEncoding(file);
92: } catch (DataObjectNotFoundException donf) {
93: LOG.warning("Invalid DataObject: "
94: + FileUtil.getFileDisplayName(file));
95: return null;
96: }
97: }
98:
99: }
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