static void main()

in generator/src/main/groovy/generator/SiteGenerator.groovy [347:396]
37 lines of code
5 McCabe index (conditional complexity)

    static void main(String... args) {
        def sourcesDir = args[0] as File
        def outputDir = args[1] as File
        def sitemapFilename = args[2]
        def generator = new SiteGenerator(sourcesDir: sourcesDir, outputDir: outputDir, sitemapFilename: sitemapFilename)
        System.setProperty('sitemapFilename', sitemapFilename)
        boolean watchMode = args.length > 3 ? Boolean.valueOf(args[3]) : false
        generator.generateSite()

        if (watchMode) {
            println "Started watch mode"
            def watcher = FileSystems.default.newWatchService()

            sourcesDir.toPath().register(watcher,
                    ENTRY_CREATE,
                    ENTRY_DELETE,
                    ENTRY_MODIFY)

            sourcesDir.eachDirRecurse { File f ->
                f.toPath().register(watcher,
                        ENTRY_CREATE,
                        ENTRY_DELETE,
                        ENTRY_MODIFY)
            }

            def existingDirectories = ['pages', 'layouts', 'includes', 'html', 'assets', 'css', 'fonts', 'img', 'js', 'vendor']

            while (true) {
                def key = watcher.take()
                def pollEvents = (List<WatchEvent<Path>>) key.pollEvents()

                def changed = pollEvents.collect { "${it.context()}".toString() }.join(', ')

                // only generate when the event refers to the actual file modified / created / added
                // as otherwise the watcher service generates two events:
                // 1) one for directory containing the modified file, and
                // 2) one for the actual file being modified
                // this checks avoid getting two events for one change
                if (existingDirectories.every { !changed.contains(it) }) {
                    try {
                        println "Regenerating site due to changes in: ${changed}"
                        // todo: selective regeneration
                        generator.generateSite()
                    } finally {
                        key.reset()
                    }
                }
            }
        }
    }