Is there tool that reports how much of a project i...

# multiplatform

[Tóth István Zoltán]

Is there tool that reports how much of a project is common code and how much is platform dependent?

[Anton Lakotka [JB]]

Can you elaborate a bit, what do you mean?

[Tóth István Zoltán]

I have a project and I'm curious how much of my code is in commonMain and how much is not in commonMain. Of course the project is somewhat complicated, so it is not a simple wc command.

[Anton Lakotka [JB]]

I don't know such tool, but you may write a simple Gradle task that will count LOC (for example) and measure ratio between commonMain and other source sets.

Something like this:

tasks.register("measureCommonMainPercentage") {
    doLast {
        var totalMainCodeLength = 0L
        var commonMainCodeLength = 0L
        for (sourceSet in kotlin.sourceSets) {
            sourceSet.name.endsWith("Test") && continue
            val sourceSetLoc = sourceSet.kotlin.sourceDirectories.asFileTree.files.sumOf { it.length() }
            if (sourceSet.name == "commonMain") commonMainCodeLength = sourceSetLoc
            totalMainCodeLength += sourceSetLoc
        }

        println("Common Main Percentage: ${commonMainCodeLength*100 / totalMainCodeLength}")
    }
}

of course this is just an illustration.

[Tóth István Zoltán]

Thanks. I might try to add this to my Gradle plugin and calculate some statistics for each module and then summarize.

[Anton Lakotka [JB]]

You may also try using tools that calculate LOCs more accurately with different statistic that you may be interested in.

my sample was just an illustration of how you can iterate through Kotlin Source Sets and apply some metrics.

[Tóth István Zoltán]

I couldn't resist, my most platform heavy module us 71% (actual UI fragments), my UI widgets module is 97%. And I think SVG, strings etc is in it atm.

[Tóth István Zoltán]

Thanks, this is quite fine for now, I don't need better for a while if ever I think.