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Merge pull request #17 from umjammer/1.0.18
1.0.18
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| /* | ||
| * Copyright (c) 2024 by Naohide Sano, All rights reserved. | ||
| * | ||
| * Programmed by Naohide Sano | ||
| */ | ||
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| package vavi.sound; | ||
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| import java.io.FilterInputStream; | ||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.util.logging.Logger; | ||
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| /** | ||
| * MsWaveAudioFileReaderTest. | ||
| * | ||
| * @author <a href="mailto:umjammer@gmail.com">Naohide Sano</a> (nsano) | ||
| * @version 0.00 240330 nsano initial version <br> | ||
| */ | ||
| public class LimitedInputStream extends FilterInputStream { | ||
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| private static final Logger logger = Logger.getLogger(LimitedInputStream.class.getName()); | ||
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| public static final String ERROR_MESSAGE_REACHED_TO_LIMIT = "stop reading, prevent form eof"; | ||
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| private final int limit; | ||
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| public LimitedInputStream(InputStream in) throws IOException { | ||
| this(in, in.available()); | ||
| } | ||
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| public LimitedInputStream(InputStream in, int limit) throws IOException { | ||
| super(in); | ||
| this.limit = limit; | ||
| logger.finer("limit: " + limit); | ||
| } | ||
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| private void check(int r) throws IOException { | ||
| if (in.available() < r) { | ||
| logger.fine("reached to limit"); | ||
| throw new IOException(ERROR_MESSAGE_REACHED_TO_LIMIT); | ||
| } | ||
| } | ||
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| @Override | ||
| public int read() throws IOException { | ||
| check(1); | ||
| return super.read(); | ||
| } | ||
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| @Override | ||
| public int read(byte[] b) throws IOException { | ||
| check(b.length); | ||
| return super.read(b); | ||
| } | ||
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| @Override | ||
| public int read(byte[] b, int off, int len) throws IOException { | ||
| check(len); | ||
| return super.read(b, off, len); | ||
| } | ||
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| @Override | ||
| public long skip(long n) throws IOException { | ||
| check((int) n); | ||
| return super.skip(n); | ||
| } | ||
| } |
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