Highlight Plugin

The Highlight plugin adds syntax highlighting for RTML and Go code blocks. It is included with rfw as a built-in plugin, so you don’t need any external library.

Features

Highlights RTML (tags, attributes, variables, commands).
Highlights Go code.
Injects CSS automatically – no separate stylesheet required.
Works both in Go and JavaScript contexts.

Usage

Import the plugin.
Register it with your app.
Call HighlightAll() after rendering.

import (
    highlight "github.com/rfwlab/rfw/v2/plugins/highlight"
    "github.com/rfwlab/rfw/v2/core"
)

func main() {
    core.RegisterPlugin(highlight.New())
    highlight.HighlightAll() // highlight all code blocks
}

In JavaScript, you can also use:

rfwHighlight(code, lang) // returns highlighted HTML
rfwHighlightAll()        // highlights all code blocks

API Reference

Function	Description
`highlight.New()`	Creates the plugin instance.
`highlight.HighlightAll()`	Highlights all `<pre><code>` blocks on the page.
`rfwHighlight(code, lang)`	JS helper: highlight a string as `lang` and return HTML.
`rfwHighlightAll()`	JS helper: run highlighting on all code blocks.

Example Template

<pre><code class="language-go">
func main() {
    println("Hello rfw!")
}
</code></pre>

With the plugin registered, the code block will be automatically highlighted.

Notes

Supported languages: rtml, go.
Class names are case-insensitive (language-go, language-Go, etc.).
Base styles are injected at runtime; override .hl-* classes to customize.
Falls back to Highlight.js if rfwHighlight returns an empty string (deprecated soon).