first commit

2026-09-02 16:31:50 +08:00
commit a461727193
911 changed files with 692450 additions and 0 deletions
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+using System.Security.Cryptography;
+using System.Text;
+using System.Text.RegularExpressions;
+using JSMachine.DCS.Infrastructure;
+
+// ReSharper disable once CheckNamespace
+namespace System
+{
+    public static class StringExtensions
+    {
+        public static string RandomString(int length)
+        {
+            var b = new byte[4];
+            new RNGCryptoServiceProvider().GetBytes(b);
+            var r = new Random(BitConverter.ToInt32(b, 0));
+            var ret = string.Empty;
+            const string str = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
+            for (var i = 0; i < length; i++)
+                ret += str.Substring(r.Next(0, str.Length - 1), 1);
+            return ret;
+        }
+
+        public static string LogId => RandomString(48);
+
+        public static string GetMatch(this string text, string p1, string p2)
+        {
+            var rg = new Regex("(?<=(" + p1 + "))[.\\s\\S]*?(?=(" + p2 + "))",
+                RegexOptions.Multiline | RegexOptions.Singleline);
+            return rg.Match(text).Value;
+        }
+
+        public static bool IsEmailAddress(this string @this)
+        {
+            return !string.IsNullOrEmpty(@this) && !string.IsNullOrWhiteSpace(@this); // TODO
+        }
+
+        public static string TrimMiddle(this string @this, int limitLength, string omitPlaceholder = null)
+        {
+            const string defaultOmitPlaceholder = "...";
+
+            if (omitPlaceholder == null) omitPlaceholder = defaultOmitPlaceholder;
+            Guards.ThrowIfNot(limitLength >= omitPlaceholder.Length);
+
+            if (string.IsNullOrEmpty(@this) || @this.Length <= limitLength) return @this;
+
+            if (limitLength == omitPlaceholder.Length) return omitPlaceholder;
+
+            var halfLength = (limitLength - omitPlaceholder.Length) / 2;
+            var bias = (limitLength - omitPlaceholder.Length) % 2;
+
+            var firstHalfString = @this.Substring(0, halfLength + bias);
+            var secondHalfString = @this.Substring(@this.Length - halfLength);
+
+            return $"{firstHalfString}{omitPlaceholder}{secondHalfString}";
+        }
+
+        public static string UpperCamelCaseToDelimiterSeparated(this string upperCamelCase)
+        {
+            var stringBuilder = new StringBuilder(upperCamelCase.Length, upperCamelCase.Length * 2);
+
+            for (int i = 0; i < upperCamelCase.Length; i++)
+            {
+                var @char = upperCamelCase[i];
+                if (char.IsUpper(@char))
+                {
+                    if (i != 0) stringBuilder.Append('-');
+                    stringBuilder.Append(char.ToLower(@char));
+                }
+                else
+                {
+                    stringBuilder.Append(@char);
+                }
+            }
+
+            return stringBuilder.ToString();
+        }
+    }
+}