package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)(?(DEFINE) # start DEFINE block
# condition1
(?<condition1>(?!(?:^__)))
# condition2
(?<condition2>(?!.*thumb))
# allowed extensions
(?<ext>\.(?:gif|png|jpe?g)$)
)
^(?&condition1)(?&condition2).+(?&ext)$`)
var str = `test.png
__somefile.png
_somefile.gif
this_one_contains_athumb.jpg
wrong_thmb.jpeg`
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/