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https://issues.apache.org/jira/browse/TIKA-1632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14556048#comment-14556048
]
Pavel Micka edited comment on TIKA-1632 at 5/22/15 12:25 PM:
-------------------------------------------------------------
7801f3c92f4acd55c82c282ecd05001907044e - BEST_COMPRESSION
789cf3c92f4acd55c82c282ecd05001907044e - BEST_SPEED
78daf3c92f4acd55c82c282ecd05001907044e -DEFAULT_COMPRESSION
<pre>
import java.util.zip.Deflater;
import java.util.zip.DeflaterInputStream;
private void compressAndVerify(int level) throws IOException {
Deflater deflater = new Deflater(level);
DeflaterInputStream deflaterInputStream = new DeflaterInputStream(new
ByteArrayInputStream("Lorem ipsum".getBytes(Constants.internalEncoding)),
deflater);
byte[] source = IOUtils.toByteArray(deflaterInputStream);
System.out.println(Hex.encodeHex(source));
byte[] decompressed = decompressor.decompress(source);
Assert.assertEquals("Lorem ipsum",
EncodingUtils.constructInternalEncodingString(decompressed));
}
</pre>
was (Author: malejpavouk):
7801f3c92f4acd55c82c282ecd05001907044e - BEST_COMPRESSION
789cf3c92f4acd55c82c282ecd05001907044e - BEST_SPEED
78daf3c92f4acd55c82c282ecd05001907044e -DEFAULT_COMPRESSION
import java.util.zip.Deflater;
import java.util.zip.DeflaterInputStream;
private void compressAndVerify(int level) throws IOException {
Deflater deflater = new Deflater(level);
DeflaterInputStream deflaterInputStream = new DeflaterInputStream(new
ByteArrayInputStream("Lorem ipsum".getBytes(Constants.internalEncoding)),
deflater);
byte[] source = IOUtils.toByteArray(deflaterInputStream);
System.out.println(Hex.encodeHex(source));
byte[] decompressed = decompressor.decompress(source);
Assert.assertEquals("Lorem ipsum",
EncodingUtils.constructInternalEncodingString(decompressed));
}
> ZLIB magic detection support
> ----------------------------
>
> Key: TIKA-1632
> URL: https://issues.apache.org/jira/browse/TIKA-1632
> Project: Tika
> Issue Type: Improvement
> Components: detector
> Reporter: Pavel Micka
> Priority: Minor
>
> In our environment we encounter many compressed streams, one of them (which
> is currently not supported by Tika 1.8) is ZLIB. According to my sources and
> experience the magics that cover majority of ZLIB archives are these:
> <mime-type type="application/zlib">
> <_comment>Zlib Compressed Archive</_comment>
> <magic priority="45">
> <match value="\x78\x01" type="string" offset="0" />
> <match value="\x78\x9c" type="string" offset="0" />
> <match value="\x78\xda" type="string" offset="0" />
> </magic>
> </mime-type>
> Well described here:
> http://stackoverflow.com/questions/9050260/what-does-a-zlib-header-look-like
> Original RFC here:
> http://tools.ietf.org/html/rfc1950
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