Programmatic API example

[leolux]

Is there a way to use the API programmatically within a standard Java main() method?

[gulhe]

##TLDR;

Yup you may, it takes some trial and errors and looking into the implementation with your favorite intelliJ to know what to do.
But it's possible.

##LONG VERSION;

I wondered the same and after some fiddling I obtained something like this :

public static void main(String[] args) {
    var sourceFolder = new File(/*filepath*/);

    var files = Objects.requireNonNull(sourceFolder.listFiles(File::isFile));
    Arrays.sort(files, Comparator.comparing(File::getName));
    optimizeAndStore(files);
    String[] fileNames = Arrays.stream(files)
            .map(File::getAbsolutePath)
            .toArray(String[]::new);
    new PngtasticOptimizer(/*target path*/, fileNames, "", false, 0, "zopfli", 1, "debug");
}

values passed to new PngtasticOptimizer(...) are the ones I used, check the source to know what to use.

I even ended up copying most of PngtasticOptimizer's constructor code to get finer access to where my files would end and to better suit my specific needs.

That's not ideal, specially considering that current version (1.6) implementation of zopfli leaves artifacts cf #7

But it does a pretty decent job at compressing pngs rather fast (when you run it with "" instead of zopfli)