daily update on 20240203 by nitload youmu, ExpComment[D[D[D[D[D[D[D [C[C[C[C[C[C[D[D[D[D[D[DComment Splitter ok, case code(* comment[D[D[D[D[D[D[D[D[D[D[C[C[[C[Dcomment*)code--comment and comment*)code--comment not added, may use span optimize all programme

2025-02-03 23:27:54 +08:00
parent 4ee675669f
commit 4e5a1b0dfb
48 changed files with 1247 additions and 662 deletions
@@ -0,0 +1,67 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace StgSharp.Script
+{
+    public static class CodeLineHelper
+    {
+        public static string SliceAndTrim(this string line, int startIndex, int length)
+        {
+            if (line == null) throw new ArgumentNullException(nameof(line));
+            if (startIndex < 0 || startIndex >= line.Length)
+                throw new ArgumentOutOfRangeException(nameof(startIndex));
+            if (length < 0 || startIndex + length > line.Length)
+                throw new ArgumentOutOfRangeException(nameof(length));
+
+            ReadOnlySpan<char> sourceSpan = line.AsSpan();
+            ReadOnlySpan<char> subSpan = sourceSpan.Slice(startIndex, length);
+
+            int start = 0;
+            while (start < subSpan.Length && char.IsWhiteSpace(subSpan[start]))
+            {
+                start++;
+            }
+            int end = subSpan.Length - 1;
+            while (end >= start && char.IsWhiteSpace(subSpan[end]))
+            {
+                end--;
+            }
+            if (start > end)
+            {
+                return string.Empty;
+            }
+            int finalLength = end - start + 1;
+
+            return new string(subSpan.Slice(start, finalLength));
+        }
+
+        public static string SliceAndTrim(this string line, int startIndex)
+        {
+            if (line == null) throw new ArgumentNullException(nameof(line));
+            if (startIndex < 0 || startIndex >= line.Length)
+                throw new ArgumentOutOfRangeException(nameof(startIndex));
+
+            ReadOnlySpan<char> sourceSpan = line.AsSpan();
+            ReadOnlySpan<char> subSpan = sourceSpan.Slice(startIndex);
+
+            int start = 0;
+            while (start < subSpan.Length && char.IsWhiteSpace(subSpan[start]))
+            {
+                start++;
+            }
+            int end = subSpan.Length - 1;
+            while (end >= start && char.IsWhiteSpace(subSpan[end]))
+            {
+                end--;
+            }
+            if (start > end)
+            {
+                return string.Empty;
+            }
+            int finalLength = end - start + 1;
+
+            return new string(subSpan.Slice(start, finalLength));
+        }
+    }
+}