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using System;
using System.Text;
using System.Text.RegularExpressions;
namespace IOL.Helpers
{
public static class StringHelpers
{
public static bool IsNullOrWhiteSpace(this string value) {
return string.IsNullOrWhiteSpace(value);
}
public static string Slugified(this string input) {
return Slug.Generate(true, input);
}
public static bool HasValue(this string value) {
return !value.IsNullOrWhiteSpace();
}
public static Guid ToGuid(this string value) {
return Guid.Parse(value);
}
public static string Base64Encode(this string text) {
return Convert.ToBase64String(Encoding.UTF8.GetBytes(text));
}
public static string ExtractFileName(this string value) {
if (value.IsNullOrWhiteSpace()) return default;
var lastIndex = value.LastIndexOf('.');
return lastIndex <= 0 ? default : value.Substring(0, lastIndex);
}
public static string ExtractExtension(this string value) {
if (value.IsNullOrWhiteSpace()) return default;
var lastIndex = value.LastIndexOf('.');
return lastIndex <= 0 ? default : value.Substring(lastIndex);
}
public static string Capitalize(this string input) {
return input.IsNullOrWhiteSpace()
? input
: Regex.Replace(input, @"\b(\w)", m => m.Value.ToUpper(), RegexOptions.None);
}
/// <summary>
/// Check if the given MIME is a JSON MIME.
/// </summary>
/// <param name="mime">MIME</param>
/// <returns>Returns true if MIME type is json.</returns>
public static bool IsJsonMime(this string mime) {
var jsonRegex = new Regex("(?i)^(application/json|[^;/ \t]+/[^;/ \t]+[+]json)[ \t]*(;.*)?$");
return mime != null && (jsonRegex.IsMatch(mime) || mime.Equals("application/json-patch+json"));
}
public static string Obfuscate(this string value) {
var last4Chars = "****";
if (value.HasValue() && value.Length > 4) {
last4Chars = value.Substring(value.Length - 4);
}
return "****" + last4Chars;
}
}
}
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