package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?<=class=")\s?btn\s?(btn-)?(mini|small|large)?\s?(?=")`)
var str = `<button class="btn btn-mini" />
<button class="btn btn-small" />
<button class="btn btn-large"/>
<button class="btn"/>
<button class="btn "/>
<button class=" btn"/>
<button class="btn btn-mini btn-primary" />
<button class="btn btn-small btn-success" />
<button class="btn btn-large btn-info"/>
<button class="btn btn-error"/>`
for i, match := range re.FindAllString(str, -1) {
fmt.Println(match, "found at index", i)
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Golang, please visit: https://golang.org/pkg/regexp/