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LatinValidators.cs
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LatinValidators.cs
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using System;
using System.Text;
using System.Text.RegularExpressions;
using FluentValidation;
using FluentValidation.Validators;
namespace FatturaElettronica.Validators
{
public abstract class LatinBaseValidator<T> : PropertyValidator
{
private readonly Charsets _charset;
public LatinBaseValidator(Charsets charset)
: base($"Testo contenente caratteri non validi ({(charset == Charsets.BasicLatin ? "Unicode Basic Latin" : "Unicode Latin-1 Supplement")}). valori non accettati: {{NonLatinCode}}")
{
_charset = charset;
}
protected override bool IsValid(PropertyValidatorContext context)
{
if (context.PropertyValue == null || (string)context.PropertyValue == string.Empty) return true;
var challenge = string.Empty;
switch (_charset)
{
case Charsets.BasicLatin:
challenge = @"^[\p{IsBasicLatin}]+$";
break;
case Charsets.Latin1Supplement:
challenge = @"^[\p{IsBasicLatin}\p{IsLatin-1Supplement}]+$";
break;
}
return Regex.Match(context.PropertyValue.ToString(), challenge).Success;
}
protected override void PrepareMessageFormatterForValidationError(PropertyValidatorContext context)
{
base.PrepareMessageFormatterForValidationError(context);
var sb = new StringBuilder();
foreach (var c in context.PropertyValue.ToString())
{
int upperLimit;
switch (_charset)
{
case Charsets.BasicLatin:
upperLimit = 0x7F;
break;
case Charsets.Latin1Supplement:
upperLimit = 0xFF;
break;
default:
throw new ArgumentOutOfRangeException();
}
if (c > upperLimit)
{
sb.Append(c);
}
}
context.MessageFormatter.AppendArgument("NonLatinCode", sb.ToString());
}
}
public class BasicLatinValidator<T> : LatinBaseValidator<T>
{
public BasicLatinValidator() : base(Charsets.BasicLatin) { }
}
public class Latin1SupplementValidator<T> : LatinBaseValidator<T>
{
public Latin1SupplementValidator() : base(Charsets.Latin1Supplement) { }
}
public enum Charsets { BasicLatin, Latin1Supplement };
public static class MyValidatorExtensions
{
public static IRuleBuilderOptions<T, TElement> BasicLatinValidator<T, TElement>(this IRuleBuilder<T, TElement> ruleBuilder)
{
return ruleBuilder.SetValidator(new BasicLatinValidator<T>());
}
public static IRuleBuilderOptions<T, TElement> Latin1SupplementValidator<T, TElement>(this IRuleBuilder<T, TElement> ruleBuilder)
{
return ruleBuilder.SetValidator(new Latin1SupplementValidator<T>());
}
}
}