HonKit PlantUML Plugin

PlantUML plugin for HonKit. No Java or Graphviz required .

The plugin supports APIs as follows for generating UML diagrams.

• PlantUML Online Server
• Your own PlantUML Server

The plugin uses plantuml online server by default, so it works with zero-config .

In this case your diagram is rendered on a public server. If you care about privacy, I recommend building your own server.

Installation

• Execute the following command.

  npm install honkit-plugin-plantuml-server

• Write the following in book.json.

  {
    "plugins": [
      "plantuml-server"
    ]
  }

How To Use

Inline

Write a code block quote specified to the plantuml language in markdown.

For example, if you write the following in README.md.

# Introduction

```plantuml
Bob->Alice : Hello!
```

NOTE: You can also use uml / puml as the language specification.

Then it will be displayed like this.

HTML is authored for example as follows.

<figure class="plantuml">
  <img src="data:image/svg+xml;base64,........">
</figure>

NOTE: You can change the CSS class name as you like.

External file

If you specify a relative path, it will read the path relative to the original markdown. For example:

{% uml src="path/to/uml" %}
{% enduml %}

If you specify an absolute path, it will be read based on the root folder of the books defined by book.json. For example:

{% uml src="/path/to/uml" %}
{% enduml %}

NOTE: Modifications other than markdown files are not supported by honkit serve hot reload.

Configuration

Option	Default	Description
server	http://www.plantuml.com/plantuml/	URL for rendering on your own server
format	svg	Supports png and svg
cacheDir	os.tmpdir()	Directory to cache rendered results. If null is specified, cache is not used.
cssClass	plantuml	CSS class name given to the rendered figure.
optimizeImage	true	Whether to remove metadata from rendered results

A book.json describing these would look like this, for example:

{
  "plugins": [
    "plantuml-server"
  ],
  "pluginsConfig": {
    "plantuml-server": {
      "server": "http://your-server.local/plantuml/",
      "format": "png",
      "cacheDir": "/tmp",
      "cssClass": "customClassName",
      "optimizeImage": false
    }
  }
}

Contributing and Development

$ git clone https://github.com/KentarouTakeda/honkit-plugin-plantuml-server.git
$ cd honkit-plugin-plantuml-server
$ npm install
$ npm test

License

HonKit PlantUML Plugin is open-sourced software licensed under the MIT license.