Initial commit

1 files changed, 67 insertions, 0 deletions

diff --git a/src/IOL.Helpers/StringHelpers.cs b/src/IOL.Helpers/StringHelpers.cs
new file mode 100644
index 0000000..1dde161
--- /dev/null
+++ b/src/IOL.Helpers/StringHelpers.cs
@@ -0,0 +1,67 @@
+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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