package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`<item>[\s\S]*?<sub>(.*?)<\/sub>((?!<sub>)[\s\S])*<\/item>`)
var str = `<item> fffffffffffff
<sub>aaaa</sub>
<value>111</value>
</item>
<item>
<sub>eeee</sub> arg34ddddddddddddddd
<atag>ddd</atag>
<sub>aaaa</sub>
<value>222</value>
</item>
<item>
<sub>eeee</sub> arg34ddddddddddddddd
<atag>ddd</atag>
<sub>aaaa</sub>
</item>`
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/