001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041:
042: package org.netbeans.modules.editor.guards;
043:
044: import java.io.CharArrayWriter;
045: import java.io.IOException;
046: import java.io.OutputStream;
047: import java.io.OutputStreamWriter;
048: import java.io.Writer;
049: import java.nio.charset.Charset;
050: import java.util.List;
051: import org.netbeans.api.editor.guards.GuardedSection;
052: import org.netbeans.spi.editor.guards.support.AbstractGuardedSectionsProvider;
053:
054: /** This stream is able to insert special guarded comments.
055: */
056: final class GuardedWriter extends Writer {
057: /** Encapsulated writer. */
058: private Writer writer;
059:
060: private CharArrayWriter buffer;
061:
062: private final AbstractGuardedSectionsProvider gw;
063:
064: private boolean isClosed = false;
065:
066: private final List<GuardedSection> sections;
067:
068: /** Creates new GuardedWriter.
069: * @param os Encapsulated output stream.
070: * @param list The list of the guarded sections.
071: */
072: public GuardedWriter(AbstractGuardedSectionsProvider gw,
073: OutputStream os, List<GuardedSection> list, Charset encoding) {
074: if (encoding == null)
075: writer = new OutputStreamWriter(os);
076: else
077: writer = new OutputStreamWriter(os, encoding);
078: this .gw = gw;
079: sections = list;
080: }
081:
082: /** Writes chars to underlying writer */
083: public void write(char[] cbuf, int off, int len) throws IOException {
084:
085: if (buffer == null) {
086: buffer = new CharArrayWriter(10240);
087: }
088:
089: buffer.write(cbuf, off, len);
090: }
091:
092: /** Calls underlying writer flush */
093: public void close() throws IOException {
094: if (isClosed) {
095: return;
096: }
097: isClosed = true;
098: if (buffer != null) {
099: char[] content = this .gw.writeSections(sections, buffer
100: .toCharArray());
101: writer.write(content);
102: }
103: writer.close();
104: }
105:
106: /** Calls underlying writer flush */
107: public void flush() throws IOException {
108: }
109:
110: }
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