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21 package net.sf.webmancer.util.io;
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23 import java.io.IOException;
24 import java.io.InputStream;
25 import java.io.OutputStream;
26 import java.io.Reader;
27 import java.io.Writer;
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29 import net.sf.webmancer.util.ContractChecker;
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34 public class Copier {
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38 private int bufferSize;
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43 public Copier(final int bufferSize) {
44 this.bufferSize = bufferSize;
45 }
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52 public void copy(final InputStream input, final OutputStream output) throws IOException {
53 ContractChecker.mustNotBeNull(input, "input");
54 ContractChecker.mustNotBeNull(output, "output");
55 byte[] buffer = new byte[this.bufferSize];
56 int read = -1;
57 try {
58 while ((read = input.read(buffer)) >= 0) {
59 output.write(buffer, 0, read);
60 }
61 } finally {
62 try {
63 input.close();
64 } finally {
65 output.close();
66 }
67 }
68 }
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75 public void copy(final Reader input, final Writer output) throws IOException {
76 ContractChecker.mustNotBeNull(input, "input");
77 ContractChecker.mustNotBeNull(output, "output");
78 char[] buffer = new char[this.bufferSize];
79 int read = -1;
80 try {
81 while ((read = input.read(buffer)) >= 0) {
82 output.write(buffer, 0, read);
83 }
84 } finally {
85 try {
86 input.close();
87 } finally {
88 output.close();
89 }
90 }
91 }
92
93 }