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1494
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1 package goodjava.io;
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2
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3 import java.io.InputStream;
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4 import java.io.IOException;
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5
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6
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7 public final class CountingInputStream extends NoMarkInputStream {
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8 private long count = 0;
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9
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10 public CountingInputStream(InputStream in) {
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11 super(in);
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12 }
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13
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14 public long count() {
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15 return count;
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16 }
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17
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18 public int read() throws IOException {
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19 int n = in.read();
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20 if( n != -1 )
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21 count++;
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22 return n;
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23 }
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24
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25 public int read(byte[] b, int off, int len) throws IOException {
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26 int n = in.read(b,off,len);
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27 if( n != -1 )
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28 count += n;
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29 return n;
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30 }
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31
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32 public long skip(long n) throws IOException {
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33 n = in.skip(n);
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34 if( n != -1 )
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35 count += n;
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36 return n;
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37 }
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38
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39 }
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