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import {Directive, forwardRef} from '@angular/core';
import {AbstractControl, NG_VALIDATORS, Validators} from '@angular/forms';
@Directive({
selector: '[ipv4][ngModel],[ipv4][formControl],[ipv4][formControlName]',
providers: [{
provide: NG_VALIDATORS,
useExisting: forwardRef(() => Ipv4ValidatorDirective),
multi: true
}],
})
export class Ipv4ValidatorDirective {
validate(c: AbstractControl) {
if (Validators.required(c) !== undefined &&
Validators.required(c) !== null) {
return null;
}
const ipv4Reg =
/^((25[0-5]|2[0-4]\d|[0-1]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[0-1]?\d\d?)$/;
let regex = new RegExp(ipv4Reg);
return regex.test(c.value) ? null : {'ipv4': true};
}
}
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