package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)(?<!foo.{0,1000})bar(?!.*foo)`)
var str = `bar //true
,bar, //true
,,bar,, //true
barbar //true
,bar,bar, //true
,,bar,,bar,, //true
barbarbar //true
,bar,bar,bar, //true
,,bar,,bar,,bar,, //true
foo //false
,foo, //false
,,foo,, //false
foobar //false
,foo,bar, //false
,,foo,,bar,, //false
barfoo //false
,bar,foo, //false
,,bar,,foo,, //false
foofoo //false
,foo,foo, //false
,,foo,,foo,, //false
foobarbar //false
,foo,bar,bar, //false
,,foo,,bar,,bar,, //false
barfoobar //false
,bar,foo,bar, //false
,,bar,,foo,,bar,, //false
barbarfoo //false
,bar,bar,foo, //false
,,bar,,bar,,foo,, //false
barfoofoo //false
,bar,foo,foo, //false
,,bar,,foo,,foo,, //false
foobarfoo //false
,foo,bar,foo, //false
,,foo,,bar,,foo,, //false
foofoobar //false
,foo,foo,bar, //false
,,foo,,foo,,bar,, //false
foofoofoo //false
,foo,foo,foo, //false
,,foo,,foo,,foo,, //false`
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/