提交 bc763c86 authored 作者: Thomas Mueller's avatar Thomas Mueller

Archive tool: faster compression, add documentation

上级 fcad7590
......@@ -31,6 +31,10 @@ import java.util.zip.InflaterInputStream;
/**
* A standalone archive tool to compress directories. It does not have any
* dependencies except for the Java libraries.
* <p>
* Unlike other compression tools, it splits the data into chunks and sorts the
* chunks, so that large directories or files that contain duplicate data are
* compressed much better.
*/
public class ArchiveTool {
......@@ -98,7 +102,7 @@ public class ArchiveTool {
new BufferedOutputStream(
new FileOutputStream(toFile), 32 * 1024);
Deflater def = new Deflater();
// def.setLevel(Deflater.BEST_SPEED);
def.setLevel(Deflater.BEST_SPEED);
out = new BufferedOutputStream(
new DeflaterOutputStream(out, def));
sort(in, out, temp, size);
......
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