Fixed issue #15 Upgrade to Asciidoctor 2.2.0

.gitignore

@@ -1,2 +1,4 @@
 node_modules
 yarn.lock
+.DS_Store
+

.vscode/settings.json

@@ -1,4 +1,5 @@
 {
     "editor.tabSize": 2,
-    "standard.autoFixOnSave": true
+    "standard.autoFixOnSave": true,
+    "liveServer.settings.port": 5501
 }

README.md

@@ -0,0 +1,30 @@
+# gulp-asciidoctor
+
+[![Build](https://github.com/asciidoctor/gulp-asciidoctor/workflows/Build/badge.svg)](https://github.com/asciidoctor/gulp-asciidoctor/actions?query=workflow%3ABuild)
+[![npm version](https://img.shields.io/npm/v/gulp-asciidoctor.svg)](https://www.npmjs.org/package/gulp-asciidoctor)
+
+A [gulp](https://gulpjs.com) plugin to support Asciidoctor processing in gulp tasks.
+
+## Installation
+
+### Requirements
+
+You need [Node](https://nodejs.org) installed on your machine to install and run the gulp-asciidoctor plugin.
+
+You need [gulp](https://gulpjs.com) installed globally or in your project directory.
+
+### Install gulp-asciidoctor via npm
+
+```
+$ npm install gulp-asciidoctor --save
+```
+
+### Install gulp-asciidoctor via yarn
+
+```
+$ yarn add gulp-asciidoctor
+```
+
+## Documentation
+
+More information can be found in the [documentation](./doc/documentation.adoc) on Github.

doc/documentation.adoc

@@ -0,0 +1,150 @@
+= Asciidoctor plugin for Gulp
+
+A https://gulpjs.com[gulp] plugin to support https://asciidoctor-docs.netlify.app/asciidoctor.js/[Asciidoctor.js] processing in gulp tasks.
+
+== Installation
+
+=== Requirements
+
+* You need https://nodejs.org[node] installed on your machine to install and run the gulp-asciidoctor plugin.
+* You need https://gulpjs.com[gulp] installed globally or in your project directory.
+
+=== Installation with npm
+----
+npm install gulp-asciidoctor --save
+----
+
+=== Installation with yarn
+----
+yarn add gulp-asciidoctor 
+----
+
+== Usage
+This plugin can be used to integrate Asciidoctor processing in your gulp tasks. Here is a typical usage scenario.
+
+.Gulpfile
+[source,javascript]
+----
+const gulp = require('gulp')
+const asciidoctor = require('gulp-asciidoctor')
+
+function processAdocFiles (cb) {
+  gulp.src('/path/to/my/files/**/*.adoc')
+    .pipe(asciidoctor({})
+    .pipe(gulp.dest('targetdir'))
+  cb()
+}
+
+function copyImages(cb) {
+  gulp.src('/path/to/my/files/**/*.jpg')
+    .pipe(gulp.dest('targetdir'))
+  cb()
+}
+
+exports.process = gulp.parallel(processAdocFiles, copyImages)
+----
+
+You can configure the plugin itself by adding options:
+
+.Set plugin options
+[source,javascript]
+----
+  ...
+
+  .pipe(asciidoctor({
+    extension: '.htm'
+  })
+
+  ...
+----
+
+And you can also configure the underlying Asciidoctor processor via the respective Asciidoctor options:
+
+.Set Asciidoctor options
+[source,javascript]
+----
+  ...
+
+  .pipe(asciidoctor({
+    safe: 'secure', // unsafe, safe, server or secure
+    doctype: 'article', // book, inline
+    standalone: true, // true or false
+    attributes: ['showtitle']
+  })
+
+  ...
+----
+
+The plugin also supports the https://asciidoctor-docs.netlify.app/asciidoctor.js/extend/converter/template-converter[Asciidoctor Template Converter]
+
+.With Asciidoctor templates
+[source,javascript]
+----
+var path = require('path')
+
+  ...
+
+  .pipe(asciidoctor({
+  template_dirs: path.join(__dirname, 'templates')
+  })
+
+  ...
+----
+
+== Options
+The behaviour of the plugin can be controlled via options. There are options that tweak the behaviour of the Gulp-plugin itself and options that controll the underlying Asciidoctor processor.
+
+== Plugin specific Options
+The following options can be used to configure the Gulp-Plugin
+
+extension:: Sets the output extension of the plugin. Defaults to '.html'
+cnv:: Sets a custom converter that should be used for processing. Defaults to 'undefined'.
+
+== AsciiDoctor Options
+All options of the underlying Asciidoctor can be set. Please refer to the
+https://asciidoctor-docs.netlify.app/asciidoctor.js/processor/convert-options[Converter options] page to see, which options are available.
+
+However, the following Asciidoctor options:
+
+* mkdirs
+* to_dir
+* to_file
+
+will be removed, since they do not make sense in a gulp processing chain.
+
+If not set, the following options will be set to the default values described here
+
+backed:: Sets the converter backend to use. Defaults to 'html5'
+base_dir:: The base directory for resolving relative resources. Defaults to the directory of the currently processed file
+doctype:: The doctype. May be 'article', 'book' or 'inline'. Defaults to 'article'
+safe:: The safemode to use. May be 'unsafe', 'safe', 'server' or 'secure'. Defaults to 'unsafe'
+standalone:: Should headers and footers be included. Defaults to 'true'
+
+== Important
+
+=== Base Directory
+Do not forget to set the Asciidoctor option `base_dir` if you want to include
+files from locations that are non-relative to the currently proecssed file.
+
+=== Obsolete option 'header_footer'
+The 'old' option 'header_footer' will be skipped in favor of the new option 'standalone'.
+
+* If 'header_footer' is set and 'standalone' is not set, the processor will receive 'standalone' = value of 'header_footer' option and the option 'header_footer' will be stripped.
+* If both 'header_footer' and 'standalone' are set, the option 'header_footer' will be stripped.
+
+== Changelog
+- V2.2.0: upgrade to asciidoctor 2.2.0
+- V2.1.1: upgrade to asciidoctor 2.1.1, mocha 7.1.0 and replaced gulp-util with replace-ext and plugin-error
+- v1.5.5-4: upgrade asciidoctor.js to version 1.5.5-4 and use version consistent with asciidoctor.js.
+- v1.0.8: upgrade asciidoctor.js to version 1.5.5-1 and other deps to latest.
+- v1.0.7: clean dependences(remove gulp and gulp-debug). 
+- v1.0.6: bug fixed
+- v1.0.5: fix asciidoctor.js default init bug (Jan/11/2015)
+- v1.0.4: bug fixed (Jan/11/2015)
+- v1.0.3: bug fixed (Jan/8/2015)
+    * Initialize asciidoctor.js only once (Thanks https://github.com/amr[Amr Mostafa])
+- v1.0.2: update to asciidoctor 1.5.2
+
+== TODO
+- more test case
+

index.js

@@ -1,8 +1,10 @@
+'use strict'
+
 // PLUGIN_NAME: gulp-asciidoctor
 var through = require('through-gulp')
 var PluginError = require('plugin-error')
 var replaceExt = require('replace-ext')
-var asciidoctor = require('asciidoctor')()
+var asciidoctor = require('@asciidoctor/core')()
 
 /**
  * Test is the given object is a class
@@ -14,39 +16,46 @@ function isClass (obj) {
 
 module.exports = function (theOptions = {}) {
   var options = theOptions || {}
-  var asciidoctorOptions = {}
+  var asciidoctorOptions = { ...theOptions }
 
   // default config
   var extension = options.extension || '.html'
-  // var extensionRegistry = asciidoctor.Extensions
 
   // AsciiDoctor options
   asciidoctorOptions.safe = options.safe || 'unsafe' // unsafe, safe, server or secure
   asciidoctorOptions.doctype = options.doctype || 'article' // book,inline
   asciidoctorOptions.attributes = options.attributes || ['showtitle']
   asciidoctorOptions.backend = options.backed || 'html5' // defaults to html5
   asciidoctorOptions.doctype = options.doctype || 'article' // defaults to article
-  asciidoctorOptions.header_footer = (options.header_footer === undefined
-    ? true : options.header_footer)
 
-  // If user overrides extension registry, use his registry
-  // if (options.extension_registry !== undefined) {
-  //   extensionRegistry = options.extension_registry
-  // }
+  if (asciidoctorOptions.standalone === undefined) {
+    if (asciidoctorOptions.header_footer !== undefined) {
+      asciidoctorOptions.standalone = asciidoctorOptions.header_footer
+    } else {
+      asciidoctorOptions.standalone = true // standalone defaults to true
+    }
+  }
+  delete asciidoctorOptions.header_footer
+
+  // Extension is only used by gulp
+  delete asciidoctorOptions.extension
+  delete asciidoctorOptions.to_file
+  delete asciidoctorOptions.to_dir
+  delete asciidoctorOptions.mkdirs
 
   // Load converter if option is set
-  if (options.converter !== undefined) {
-    var cnv = options.converter
-    if (isClass(options.converter)) {
-      const CnvClass = options.converter
-      cnv = new CnvClass()
+  if (options.cnv !== undefined) {
+    var cnv = options.cnv
+    if (isClass(options.cnv)) {
+      const CnvClazz = options.cnv
+      cnv = new CnvClazz()
     }
-
     if (typeof cnv.convert === 'function') {
-      asciidoctor.ConverterFactory.register(cnv, asciidoctorOptions.backend)
+      asciidoctor.ConverterFactory.register(cnv, [asciidoctorOptions.backend])
     } else {
       throw new PluginError('gulp-asciidoctor', 'Provided custom converter must implement a convert() method')
     }
+    delete asciidoctorOptions.cnv
   }
 
   // creating a stream through which each file will pass