package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)^\+(?:7(?: (?:\((?:\d{1,3}(?:\)(?: (?:\d{1,3}(?:-(?:\d{1,2}(?:-\d{0,2})?)?)?)?)?)?)?)?)?)?$`)
var str = `+
+7
+7
+7 (
+7 (1
+7 (12
+7 (123
+7 (123)
+7 (123)
+7 (123) 4
+7 (123) 45
+7 (123) 456
+7 (123) 456-
+7 (123) 456-7
+7 (123) 456-78
+7 (123) 456-78-
+7 (123) 456-78-9
+7 (123) 456-78-90
+7 (123) 456-78-902
+7 (123) 45678-90
+7 123 456-78-90`
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/