Saxonite 1.2.11.1

SacsStandardBase/Base/Utils/StringUtil.cs

@@ -3,6 +3,7 @@ using Sarand.Net.Standard.Base.Bus;
 using Sarand.Net.Standard.Base.Core;
 using System;
 using System.Globalization;
+using System.IO;
 using System.Linq;
 using System.Text.RegularExpressions;
 
@@ -332,6 +333,61 @@ namespace Sarand.Net.Standard.Base.Utils
 			return value.Substring(0, length);
 		}
 
+		//-------------------------------------------------------------------
+		/// <summary>Return the common previx for the values in the list.</summary>
+		public static String GetPrefix(params String[] values)
+		{
+			String prefix = values.Any() ? values[0] : "";
+			foreach (String value in values)
+			{
+				// Determine how much o fthe prefix matches this value.
+				for (int i = 0; i < prefix.Length; i++)
+				{
+					if (value.Length <= i || value[i] != prefix[i])
+						prefix = prefix.Substring(0, i);
+				}
+			}
+			return prefix;
+		}
+
+		//-------------------------------------------------------------------
+		/// <summary>
+		/// Concatenate the partial path values, stripping leading and trailing slashes, and converting slashes (one or more in sequence) to a single path delimiter.
+		/// </summary>
+		public static String CombineFilePath(params String[] values)
+		{
+			return CombineFilePath(Path.DirectorySeparatorChar, values);
+		}
+
+		/// <summary>
+		/// Concatenate the partial path values with forward slashes ('/'), stripping leading and trailing slashes and converting slashes (one or more in sequence) to a single forward slash.
+		/// </summary>
+		public static String CombineForwardSlashDelimited(params String[] values)
+		{
+			return CombineFilePath('/', values);
+		}
+
+		/// <summary>
+		/// Concatenate the partial path values with the specified dlimiter, stripping leading and trailing slashes and delimiters, and converting slashes and delimiters to the required delimiter.
+		/// </summary>
+		private static String CombineFilePath(char delim, params String[] values)
+		{
+			String path = "";
+			String delimPattern = "[\\\\\\/" + (delim != '\\' && delim != '/' ? "\\" + delim : "") + "]";
+			foreach (String value in values)
+			{
+				if (IsBlank(path))
+					// Path not yet started - being with this value.
+					path = value;
+				else
+					// Path is already started.
+					// Remove trailing delimiters from path and leading delimiters from next partial value before concatenating with path separator.
+					path = Regex.Replace(path, delimPattern + "+$", "") + delim.ToString() + Regex.Replace(value, "^" + delimPattern + "+", "");
+			}
+			// Convert any combination of the alternative delimiters with requested delimiter, excluding start of path, eg. '\\share\...'.
+			return Regex.Replace(path, delimPattern, delim.ToString());
+		}
+
 		//-------------------------------------------------------------------
 		//                        C o n v e r s i o n
 		//-------------------------------------------------------------------