README
¶
douceur 
A simple CSS parser and inliner in Golang.
Parser is vaguely inspired by CSS Syntax Module Level 3 and corresponding JS parser.
Inliner only parses CSS defined in HTML document, it DOES NOT fetch external stylesheets (for now).
Inliner inserts additional attributes when possible, for example:
<html>
<head>
<style type="text/css">
body {
background-color: #f2f2f2;
}
</style>
</head>
<body>
<p>Inline me !</p>
</body>
</html>`
Becomes:
<html>
<head>
</head>
<body style="background-color: #f2f2f2;" bgcolor="#f2f2f2">
<p>Inline me !</p>
</body>
</html>`
The bgcolor attribute is inserted, in addition to the inlined background-color style.
Tool usage
Install tool:
$ go install github.com/aymerick/douceur
Parse a CSS file and display result:
$ douceur parse inputfile.css
Inline CSS in an HTML document and display result:
$ douceur inline inputfile.html
Library usage
Fetch package:
$ go get github.com/aymerick/douceur
Parse CSS
package main
import (
"fmt"
"github.com/lab42/douceur/parser"
)
func main() {
input := `body {
/* D4rK s1T3 */
background-color: black;
}
p {
/* Try to read that ! HAHA! */
color: red; /* L O L */
}
`
stylesheet, err := parser.Parse(input)
if err != nil {
panic("Please fill a bug :)")
}
fmt.Print(stylesheet.String())
}
Displays:
body {
background-color: black;
}
p {
color: red;
}
Inline HTML
package main
import (
"fmt"
"github.com/lab42/douceur/inliner"
)
func main() {
input := `<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<style type="text/css">
p {
font-family: 'Helvetica Neue', Verdana, sans-serif;
color: #eee;
}
</style>
</head>
<body>
<p>
Inline me please!
</p>
</body>
</html>`
html, err := inliner.Inline(input)
if err != nil {
panic("Please fill a bug :)")
}
fmt.Print(html)
}
Displays:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
</head>
<body>
<p style="color: #eee; font-family: 'Helvetica Neue', Verdana, sans-serif;">
Inline me please!
</p>
</body></html>
Test
go test ./... -v
Dependencies
- Parser uses Gorilla CSS3 tokenizer.
- Inliner uses goquery to manipulate HTML.
Similar projects
Documentation
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Overview ¶
Copyright © 2022 NAME HERE <EMAIL ADDRESS>
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
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