Question: How to set author, date etc. individually for each file?

[dhs-rec]

We currently have a setup with this in build.gradle:

ext {
  (author, date) = 'git log -1 --pretty=%an;%ci'.execute().text.trim().split(';')
  revision = 'git describe --always'.execute().text.trim()
}

asciidoctor {
  outputDir project.rootDir.path + '/build/docs'
  sourceDir file('documentation')
  sources {
    include '**/*.adoc'
  }
  asciidoctorj {
    attributes = [
      author: project.author,
      docdatetime: project.date,
      revdate: project.date,
      revnumber: project.revision,
    ]
  }
}

This puts the author and date of the current commit into every document. I'd prefer each file to contain the author and date of the last commit which affected that file (as in (author, date) = 'git log -1 --pretty=%an;%ci -- path/to/file'.execute().text.trim().split(';') ).

Is this possible somehow?