spring-security/docs/guides/build.gradle

import org.asciidoctor.gradle.*

file("src/asciidoc").eachFileMatch(~/.*\.asc/) { file->
    task "asciidoctor-${file.name}"(type: AsciidoctorTask) {
        sourceDocumentName = file
        options = [
          eruby: 'erubis',
          eruby: 'erubis',
          attributes: [
              copycss : '',
              icons : 'font',
              'source-highlighter': 'prettify',
              sectanchors : '',
              toc2: '',
              idprefix: '',
              idseparator: '-',
              doctype: 'book',
              'spring-security-version' : project.version,
              revnumber : project.version
          ]
        ]
    }
}

task asciidoctor {
    group = 'Documentation'
    description = "Generates the asciidoc for $project.name"
    dependsOn tasks.matching { t -> t.name.startsWith('asciidoctor-') }
}

ext.spec = copySpec {
    into ('guides') {
        from("$buildDir/asciidoctor/dist/html5/")
    }
}