bin/projects/dbatools/dbatools/Utility/UtilityHost.cs
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using System;
using System.Collections.Generic; namespace Sqlcollaborative.Dbatools.Utility { /// <summary> /// Provides static resources to utility-namespaced stuff /// </summary> public static class UtilityHost { /// <summary> /// Restores all DateTime objects to their default display behavior /// </summary> public static bool DisableCustomDateTime = false; /// <summary> /// Restores all timespan objects to their default display behavior. /// </summary> public static bool DisableCustomTimeSpan = false; /// <summary> /// Formating string for date-style datetime objects. /// </summary> public static string FormatDate = "dd MMM yyyy"; /// <summary> /// Formating string for datetime-style datetime objects /// </summary> public static string FormatDateTime = "yyyy-MM-dd HH:mm:ss.fff"; /// <summary> /// Formating string for time-style datetime objects /// </summary> public static string FormatTime = "HH:mm:ss"; /// <summary> /// Implement's VB's Like operator logic. /// </summary> /// <param name="CaseSensitive">Whether the comparison is case sensitive</param> /// <param name="Pattern">The pattern the string is compared with</param> /// <param name="String">The string that is being compared with a pattern</param> public static bool IsLike(string String, string Pattern, bool CaseSensitive = false) { if (!CaseSensitive) { String = String.ToLower(); Pattern = Pattern.ToLower(); } // Characters matched so far int matched = 0; // Loop through pattern string for (int i = 0; i < Pattern.Length;) { // Check for end of string if (matched > String.Length) return false; // Get next pattern character char c = Pattern[i++]; if (c == '[') // Character list { // Test for exclude character bool exclude = (i < Pattern.Length && Pattern[i] == '!'); if (exclude) i++; // Build character list int j = Pattern.IndexOf(']', i); if (j < 0) j = String.Length; HashSet<char> charList = CharListToSet(Pattern.Substring(i, j - i)); i = j + 1; if (charList.Contains(String[matched]) == exclude) return false; matched++; } else if (c == '?') // Any single character { matched++; } else if (c == '#') // Any single digit { if (!Char.IsDigit(String[matched])) return false; matched++; } else if (c == '*') // Zero or more characters { if (i < Pattern.Length) { // Matches all characters until // next character in pattern char next = Pattern[i]; int j = String.IndexOf(next, matched); if (j < 0) return false; matched = j; } else { // Matches all remaining characters matched = String.Length; break; } } else // Exact character { if (matched >= String.Length || c != String[matched]) return false; matched++; } } // Return true if all characters matched return (matched == String.Length); } /// <summary> /// Converts a string of characters to a HashSet of characters. If the string /// contains character ranges, such as A-Z, all characters in the range are /// also added to the returned set of characters. /// </summary> /// <param name="charList">Character list string</param> private static HashSet<char> CharListToSet(string charList) { HashSet<char> set = new HashSet<char>(); for (int i = 0; i < charList.Length; i++) { if ((i + 1) < charList.Length && charList[i + 1] == '-') { // Character range char startChar = charList[i++]; i++; // Hyphen char endChar = (char)0; if (i < charList.Length) endChar = charList[i++]; for (int j = startChar; j <= endChar; j++) set.Add((char)j); } else set.Add(charList[i]); } return set; } } } |