@antora/pdf-extension/lib/converter.js

An Antora extension that uses Assembler to merge pages into assembly files, export them to the PDF format, and publish them with the site.

'use strict'

const fsp = require('node:fs/promises')
const ospath = require('node:path')

const DEFAULT_COMMAND = 'asciidoctor-pdf --sourcemap'
const PACKAGE_NAME = require('../package.json').name

async function convert (file, convertAttributes, buildConfig, { logCommand, runCommand }) {
  const { command, cwd = process.cwd(), attributeOptionFlag, outputOptionFlag, stderr = 'print' } = buildConfig
  if (!command) return null
  const extraArgs = convertAttributes.toArgs(attributeOptionFlag || '-a')
  const stdout =
    outputOptionFlag === false
      ? 'buffer'
      : extraArgs.push(outputOptionFlag || '-o', convertAttributes.outfile) && 'print'
  logCommand?.(command, extraArgs, file, convertAttributes)
  return runCommand(command, extraArgs.concat('-'), { parse: true, cwd, stdin: file.contents, stdout, stderr })
}

function getDefaultCommand (cwd, playbook) {
  const defaultCommand = playbook?.runtime.stacktrace ? `${DEFAULT_COMMAND} --trace` : DEFAULT_COMMAND
  return fsp.access(ospath.join(cwd, 'Gemfile.lock')).then(
    () => `bundle exec ${defaultCommand}`,
    () => defaultCommand
  )
}

module.exports = {
  convert,
  backend: 'pdf',
  getDefaultCommand,
  extname: '.pdf',
  mediaType: 'application/pdf',
  loggerName: PACKAGE_NAME,
}