package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)^(?=(?:\d,?){1,10}(?:\.\d{2})?$)[0-9]{1,3}(?:,[0-9]{3})*(?:\.[0-9]+)?$`)
var str = `I want to make sure that the input is no more than 10 digits before the decimals point so it will match DECIMAL(12,2).
I already tried :
^(?=.{0,13}$)[0-9]{1,3}(,[0-9]{3})*(\.[0-9]+)?$
But it counts the digits after decimals too, so what I want to match is:
1,111,111,111.00
so it will keep matching with or without the decimals, what I tried only can match with:
1,111,111,111
111,111,111.00
1,111,111,111,1.00`
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/