package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?s)(<item>[^<]*?<title>(?<title>[^<]*?)<\/title>([^<]|<(?!description))*<description>(?<desc>[^<]*?keyword[^<]*?)<\/description>[^<]*?<\/item>)`)
var str = `<item>
<title>bla</title>
...
<description>bla</description>
</item>
<item>
<title>bla2</title>
<summary>bla2</summary>
<summary>bla2</summary>
<summary>bla2</summary>
<description>bla2, keyword here are blablabla</description>
</item>
<item>
<title>bla2</title>
....
<description>no kword here</description>
</item>
blablabla
<item>
<title>bla</title>
...
<description>bla</description>
</item>
<item>
<title>bla2</title>
<summary>bla2</summary>
<description>bla2, keyword here are blablabla</description>
</item>
<item>
<title>bla2</title>
<summary>bla2</summary>
<description>bla2, keyword here are blablabla</description>
</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/