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In Python, PHP, and many other languages, it is possible to convert a html document and "prettify" it. In Go, this is very easily done for JSON and XML (from a struct/interface) using the MarshIndent function.
Example for XML in Go:
http://play.golang.org/p/aBNfNxTEG1
package main
import (
"encoding/xml"
"fmt"
"os"
)
func main() {
type Address struct {
City, State string
}
type Person struct {
XMLName xml.Name `xml:"person"`
Id int `xml:"id,attr"`
FirstName string `xml:"name>first"`
LastName string `xml:"name>last"`
Age int `xml:"age"`
Height float32 `xml:"height,omitempty"`
Married bool
Address
Comment string `xml:",comment"`
}
v := &Person{Id: 13, FirstName: "John", LastName: "Doe", Age: 42}
v.Comment = " Need more details. "
v.Address = Address{"Hanga Roa", "Easter Island"}
output, err := xml.MarshalIndent(v, " ", " ")
if err != nil {
fmt.Printf("error: %v\n", err)
}
os.Stdout.Write(output)
}
However, this only works for converting struct/interface into a []byte. What I want is convert a string of html code and indent automatically. Example:
Raw HTML
<!doctype html><html><head>
<title>Website Title</title>
</head><body>
<div class="random-class">
<h1>I like pie</h1><p>It's true!</p></div>
</body></html>
Prettified HTML
<!doctype html>
<html>
<head>
<title>Website Title</title>
</head>
<body>
<div class="random-class">
<h1>I like pie</h1>
<p>It's true!</p>
</div>
</body>
</html>
How would this be done just using a string?
503
The HTML pretty print refers to the process of making your syntax more visually appealing by applying specific stylistic conventions. There are many reasons why doing this is necessary and one of them is creating a correct HTML print format.
html. soupparser uses for parsing HTML. BeautifulSoup has a prettify method that does exactly what it says it does. It prettifies the HTML with proper indents and everything.
EDIT: Found a great way using the XML parser:
package main
import (
"encoding/xml"
"fmt"
)
func main() {
html := "<html><head><title>Website Title</title></head><body><div class=\"random-class\"><h1>I like pie</h1><p>It's true!</p></div></body></html>"
type node struct {
Attr []xml.Attr
XMLName xml.Name
Children []node `xml:",any"`
Text string `xml:",chardata"`
}
x := node{}
_ = xml.Unmarshal([]byte(html), &x)
buf, _ := xml.MarshalIndent(x, "", "\t")
fmt.Println(string(buf))
}
will output the following:
<html>
<head>
<title>Website Title</title>
</head>
<body>
<div>
<h1>I like pie</h1>
<p>It's true!</p>
</div>
</body>
</html>
I faced a same problem and I just solved it by creating an HTML formatting package in Go by myself.
Here it is:
GoHTML - HTML formatter for Go
Please check this package out.
Thanks,
Keiji
41
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