dujar

My first ever Kotlin thingie, yay! 🥳

Basically du for .jar files - peak inside a jar file and see the sizes of the resources in the jar

It is still early days and I'd like it to get it to work something like goweight with the JSON output and all.

Also needs more and actual command-line arguments and maybe even a kotlin-native build.

Why?

I needed something like this at work and also needed a good reason to learn Kotlin.

Example output

Ran it on a build of zefaker, oof - those YAMLs takin up space huh.

$ java -jar dujar.jar zefaker-all.jar

1.4 MiB en-US.yml
1.0 MiB org/codehaus/groovy/runtime/ArrayUtil.class
937.8 KiB       groovyjarjarantlr4/v4/unicode/UnicodeData.class
526.3 KiB       org/apache/poi/sl/draw/geom/presetShapeDefinitions.xml
507.2 KiB       org/apache/poi/xssf/usermodel/presetTableStyles.xml 
504.7 KiB       org/apache/groovy/util/Maps.class
356.2 KiB       nl.yml
...TRUNCATED...

Building

Assuming you have the Kotlin compiler on your PATH

$ kotlinc dujar.kt -include-runtime -d dujar.jar

Running

$ java -jar dujar.jar /path/to/file.jar

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Copyright (c) Zikani Nyirenda Mwase