001: /*
002: $Id: InputStreamReaderSource.java 1112 2004-04-29 22:39:39Z glaforge $
003:
004: Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
005:
006: Redistribution and use of this software and associated documentation
007: ("Software"), with or without modification, are permitted provided
008: that the following conditions are met:
009:
010: 1. Redistributions of source code must retain copyright
011: statements and notices. Redistributions must also contain a
012: copy of this document.
013:
014: 2. Redistributions in binary form must reproduce the
015: above copyright notice, this list of conditions and the
016: following disclaimer in the documentation and/or other
017: materials provided with the distribution.
018:
019: 3. The name "groovy" must not be used to endorse or promote
020: products derived from this Software without prior written
021: permission of The Codehaus. For written permission,
022: please contact info@codehaus.org.
023:
024: 4. Products derived from this Software may not be called "groovy"
025: nor may "groovy" appear in their names without prior written
026: permission of The Codehaus. "groovy" is a registered
027: trademark of The Codehaus.
028:
029: 5. Due credit should be given to The Codehaus -
030: http://groovy.codehaus.org/
031:
032: THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
033: ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
034: NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
035: FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
036: THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
037: INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
038: (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
039: SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
040: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
041: STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
042: ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
043: OF THE POSSIBILITY OF SUCH DAMAGE.
044:
045: */
046:
047: package org.codehaus.groovy.control.io;
048:
049: import java.io.IOException;
050: import java.io.InputStream;
051: import java.io.InputStreamReader;
052: import java.io.Reader;
053:
054: import org.codehaus.groovy.control.CompilerConfiguration;
055:
056: /**
057: * A ReaderSource for source strings.
058: *
059: * @author <a href="mailto:cpoirier@dreaming.org">Chris Poirier</a>
060: *
061: * @version $Id: InputStreamReaderSource.java 1112 2004-04-29 22:39:39Z glaforge $
062: */
063:
064: public class InputStreamReaderSource extends AbstractReaderSource {
065:
066: //---------------------------------------------------------------------------
067: // CONSTRUCTION AND SUCH
068:
069: private InputStream stream; // The InputStream from which we produce a Reader.
070:
071: /**
072: * Creates the ReaderSource from a File descriptor.
073: */
074:
075: public InputStreamReaderSource(InputStream stream,
076: CompilerConfiguration configuration) {
077: super (configuration);
078: this .stream = stream;
079: }
080:
081: /**
082: * Returns a new Reader on the underlying source object.
083: */
084:
085: public Reader getReader() throws IOException {
086: if (stream != null) {
087: Reader reader = new InputStreamReader(stream, configuration
088: .getSourceEncoding());
089: stream = null;
090:
091: return reader;
092: }
093:
094: return null;
095: }
096:
097: /**
098: * Returns true if the source can be restarted (ie. if getReader()
099: * will return non-null on subsequent calls.
100: */
101:
102: public boolean canReopenSource() {
103: return false;
104: }
105:
106: }
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