如何在Golang中用div包装每行？

Question

I have a text paragraph.

I would like to wrap each line with a div.

For example if the text string looks like this

Lorem ipsum dolor sit amet, 
consectetur adipiscing elit. 

Nam eget lectus porta metus aliquam tincidunt sed vel enim.

Then I would like to wrap it like this

<div>Lorem ipsum dolor sit amet,</div> 
<div>consectetur adipiscing elit.</div> 
<div><br/></div>
<div>Nam eget lectus porta metus aliquam tincidunt sed vel enim.</div>

Can someone tell me what is the proper way?

Thanks

Answer 1

You may use bytes.Buffer and bufio.NewScanner, like this working sample code:

package main

import "fmt"
import "strings"
import "bufio"
import "bytes"

func main() {
    r := strings.NewReader(`Lorem ipsum dolor sit amet,
consectetur adipiscing elit.

Nam eget lectus porta metus aliquam tincidunt sed vel enim.`)

    buf := &bytes.Buffer{}
    scanner := bufio.NewScanner(r)
    for scanner.Scan() {
        s := scanner.Text()
        if len(s) == 0 {
            s = `<br/>`
        }
        buf.WriteString(`<div>` + s + `</div>
`)
    }
    fmt.Println(buf.String())
}

output:

<div>Lorem ipsum dolor sit amet,</div>
<div>consectetur adipiscing elit.</div>
<div><br/></div>
<div>Nam eget lectus porta metus aliquam tincidunt sed vel enim.</div>

---

You may use bytes.Buffer and html/template,
but you have <div></div> instead of <div><br/></div>, then you may use

s = strings.Replace(s, `<div></div>`, `<div><br/></div>`, -1)

like this working sample code:

package main

import "fmt"
import "bytes"
import "html/template"
import "strings"

func main() {
    r := []string{`Lorem ipsum dolor sit amet,`,
        `consectetur adipiscing elit.`,
        ``,
        `Nam eget lectus porta metus aliquam tincidunt sed vel enim.`}
    buf := &bytes.Buffer{}
    t := template.Must(template.New("template").Parse("{{range .}}<div>{{.}}</div>
{{end}}"))
    t.Execute(buf, r)
    s := buf.String()
    s = strings.Replace(s, `<div></div>`, `<div><br/></div>`, -1)
    fmt.Println(s)
}

output:

<div>Lorem ipsum dolor sit amet,</div>
<div>consectetur adipiscing elit.</div>
<div><br/></div>
<div>Nam eget lectus porta metus aliquam tincidunt sed vel enim.</div>