ketchupsalt / gohaml

An implementation of the popular XHTML Abstraction Markup Language using the Go language.

What is it?

You can find out more about HAML at haml-lang.com
You can find out more about GO at golang.org

I’ve tried to remain diligent about reproducing the output from the canonical Ruby-based parser, so if you feel familiar with the one, then you should feel familiar with the other.

This branch compiles with 6g/8g “go version go1.0.3.”

Is it done?

I think so. It has…

• Tags with
  • empty content;
  • attributes of the form {:attr => "value"};
  • id moniker using “#” (#divId); and,
  • class moniker using “.” (.divClass).
• Tag nesting
• Scope lookup
  • Arbitrary number of keys as specified by struct (someKeyInScope.Subkey1.Subkey2)
  • Valid as tag content (%p= someKeyInScope)
  • Valid as tag attribute value (%p{:attr => someKeyInScope})
  • Valid as tag attribute name (%p{someKeyInScope => "value"})
• Engine-level autoclose option (<br /> vs. <br>)
• Tag-specific close option (%br/ becomes <br /> regardless of autoclose setting)
• Whitespace removal with the < operator
• Simple scripting
  • Declaration and assignment of strings, floats, and ints (- varname := “value”)
  • Range looping construct (- for i, v := range scopeVar)
• Error messages for badly-formed templates

If you would like another feature added, just log an issue and I’ll review it forthright.

How can I install this?

To install the library for use in your project, you can use goinstall.

go get "github.com/realistschuckle/gohaml"

How can I install this from source?

In a Go workspace, create a directory for gohaml.

mkdir -p src/github.com/realistschuckle/gohaml

Clone the gohaml repository into that newly created directory.

git clone git://github.com/realistschuckle/gohaml.git src/github.com/realistschuckle/gohaml

Now build and install it.

go install github.com/realistschuckle/gohaml

How can I use it?

How about something like this? Save it, compile it, link it, and run it!

package main

import (
	"github.com/realistschuckle/gohaml"
	"fmt"
)

func main() {
	var scope = make(map[string]interface{})
	scope["lang"] = "HAML"
	content := "I love <\n=lang<\n!"
	engine, _ := gohaml.NewEngine(content)
	output := engine.Render(scope)
	fmt.Println(output) // Prints "I love HAML!"
}