Jade Save
Jade.go - pug template engine for Go (golang)
Jade.go - template engine for Go (golang)
Package jade (github.com/Joker/jade) is a simple and fast template engine implementing Jade/Pug template.
Jade precompiles templates to Go code or generates html/template.
Now Jade-lang is renamed to Pug template engine.
Jade/Pug syntax
example:
//- :go:func Index(pageTitle string, youAreUsingJade bool)
mixin for(golang)
#cmd Precompile jade templates to #{golang} code.
doctype html
html(lang="en")
head
title= pageTitle
script(type='text/javascript').
if(question){
answer(40 + 2)
}
body
h1 Jade - template engine
+for('Go')
#container.col
if youAreUsingJade
p You are amazing
else
p Get on it!
p.
Jade/Pug is a terse and simple
templating language with
a #[strong focus] on performance
and powerful features.
becomes
<!DOCTYPE html>
<html lang="en">
<head>
<title>Jade.go</title>
<script type="text/javascript">
if(question){
answer(40 + 2)
}
</script>
</head>
<body>
<h1>Jade - template engine
<div id="cmd">Precompile jade templates to Go code.</div>
</h1>
<div id="container" class="col">
<p>You are amazing</p>
<p>
Jade/Pug is a terse and simple
templating language with
a <strong>focus</strong> on performance
and powerful features.
</p>
</div>
</body>
</html>
Here are additional examples and test cases.
Installation
Install jade compiler
go install github.com/Joker/jade/cmd/jade@latest
or github.com/Joker/jade package
go get -u github.com/Joker/jade
Example usage
jade compiler
jade -writer -pkg=main hello.jade
jade command[^1] precompiles hello.jade to hello.jade.go
hello.jade
:go:func(arg) word string
doctype 5
html
body
p Hello #{word}!
hello.jade.go
// Code generated by "jade.go"; DO NOT EDIT.
package main
import "io"
const (
hello__0 = `<!DOCTYPE html><html><body><p>Hello `
hello__1 = `!</p></body></html>`
)
func Jade_hello(word string, wr io.Writer) {
buffer := &WriterAsBuffer{wr}
buffer.WriteString(hello__0)
WriteEscString(word, buffer)
buffer.WriteString(hello__1)
}
main.go
package main
//go:generate jade -pkg=main -writer hello.jade
import "net/http"
func main() {
http.HandleFunc("/", func(wr http.ResponseWriter, req *http.Request) {
Jade_hello("jade", wr)
})
http.ListenAndServe(":8080", nil)
}
output at localhost:8080
<!DOCTYPE html><html><body><p>Hello jade!</p></body></html>
github.com/Joker/jade package
generate html/template at runtime
(This case is slightly slower and doesn't support[^2] all features of Jade.go)
package main
import (
"fmt"
"html/template"
"net/http"
"github.com/Joker/hpp" // Prettify HTML
"github.com/Joker/jade"
)
func handler(w http.ResponseWriter, r *http.Request) {
jadeTpl, _ := jade.Parse("jade", []byte("doctype 5\n html: body: p Hello #{.Word} !"))
goTpl, _ := template.New("html").Parse(jadeTpl)
fmt.Printf("output:%s\n\n", hpp.PrPrint(jadeTpl))
goTpl.Execute(w, struct{ Word string }{"jade"})
}
func main() {
http.HandleFunc("/", handler)
http.ListenAndServe(":8080", nil)
}
console output
<!DOCTYPE html>
<html>
<body>
<p>Hello {{.Word}} !</p>
</body>
</html>
output at localhost:8080
<!DOCTYPE html><html><body><p>Hello jade !</p></body></html>
Performance
The data of chart comes from SlinSo/goTemplateBenchmark.
Custom filter :go
This filter is used as helper for command line tool
(to set imports, function name and parameters).
Filter may be placed at any nesting level.
When Jade used as library :go filter is not needed.
Nested filter :func
:go:func
CustomNameForTemplateFunc(any []int, input string, args map[string]int)
:go:func(name)
OnlyCustomNameForTemplateFunc
:go:func(args)
(only string, input float32, args uint)
Nested filter :import
:go:import
"github.com/Joker/jade"
github.com/Joker/hpp
note
[^1]:
Usage: ./jade [OPTION]... [FILE]...
-basedir string base directory for templates (default "./") -d string directory for generated .go files (default "./") -fmt HTML pretty print output for generated functions -inline inline HTML in generated functions -pkg string package name for generated files (default "jade") -stdbuf use bytes.Buffer [default bytebufferpool.ByteBuffer] -stdlib use stdlib functions -writer use io.Writer for output
[^2]:
Runtime html/template generation doesn't support the following features:
=> means it generate the folowing template
```
for => "{{/* %s, %s /}}{{ range %s }}"
for if => "{{ if gt len %s 0 }}{{/ %s, %s */}}{{ range %s }}"
multiline code => "{{/* %s */}}"
inheritance block => "{{/* block */}}"
case statement => "{{/* switch %s */}}"
when => "{{/* case %s: */}}"
default => "{{/* default: */}}"
```
You can change this behaviour in [`config.go`](https://github.com/Joker/jade/blob/master/config.go#L24) file.
Partly this problem can be solved by [custom](https://pkg.go.dev/text/template#example-Template-Func) functions.
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