Rev | Line | |
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[33] | 1 | package omq.common.util; |
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| 2 | |
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| 3 | import java.io.ByteArrayInputStream; |
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| 4 | import java.io.ByteArrayOutputStream; |
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| 5 | import java.io.IOException; |
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| 6 | import java.util.zip.GZIPInputStream; |
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| 7 | import java.util.zip.GZIPOutputStream; |
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| 8 | |
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| 9 | public class Zipper { |
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| 10 | |
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| 11 | public static byte[] zip(byte[] b) throws IOException { |
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| 12 | ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
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| 13 | |
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| 14 | GZIPOutputStream zos = null; |
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| 15 | try { |
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| 16 | zos = new GZIPOutputStream(baos); |
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| 17 | zos.write(b); |
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| 18 | } finally{ |
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| 19 | if(zos != null){ |
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| 20 | zos.close(); |
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| 21 | } |
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| 22 | |
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| 23 | baos.close(); |
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| 24 | } |
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| 25 | |
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| 26 | return baos.toByteArray(); |
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| 27 | } |
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| 28 | |
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| 29 | public static byte[] unzip(byte[] b) throws IOException { |
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| 30 | ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
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| 31 | ByteArrayInputStream bais = new ByteArrayInputStream(b); |
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| 32 | |
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| 33 | GZIPInputStream zis = null; |
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| 34 | try { |
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| 35 | zis = new GZIPInputStream(bais); |
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| 36 | |
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| 37 | byte[] tmpBuffer = new byte[256]; |
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| 38 | int n; |
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| 39 | while ((n = zis.read(tmpBuffer)) >= 0) { |
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| 40 | baos.write(tmpBuffer, 0, n); |
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| 41 | } |
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| 42 | } finally { |
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| 43 | if(zis != null){ |
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| 44 | zis.close(); |
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| 45 | } |
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| 46 | |
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| 47 | bais.close(); |
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| 48 | baos.close(); |
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| 49 | } |
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| 50 | |
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| 51 | return baos.toByteArray(); |
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| 52 | } |
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| 53 | } |
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