From 92b964cd9c669daab1f9e196b299c49de9da532f Mon Sep 17 00:00:00 2001
From: Katy Coe <djkaty@start.no>
Date: Fri, 15 Nov 2019 05:14:49 +0100
Subject: [PATCH] Output: Escape special characters in C# strings properly

---
 Il2CppInspector/Reflection/Extensions.cs | 29 ++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/Il2CppInspector/Reflection/Extensions.cs b/Il2CppInspector/Reflection/Extensions.cs
index b32abf1..514a601 100644
--- a/Il2CppInspector/Reflection/Extensions.cs
+++ b/Il2CppInspector/Reflection/Extensions.cs
@@ -31,12 +31,37 @@ namespace Il2CppInspector.Reflection
 
         public static string ToAddressString(this (ulong start, ulong end)? address) => ToAddressString(address?.start ?? 0) + "-" + ToAddressString(address?.end ?? 0);
 
+        // C# string literal escape characters
+        // Taken from: https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/strings/#regular-and-verbatim-string-literals
+        private static Dictionary<char, string> escapeChars = new Dictionary<char, string> {
+            ['\''] = @"\'",
+            ['"'] = @"\""",
+            ['\\'] = @"\\",
+            ['\0'] = @"\0",
+            ['\a'] = @"\a",
+            ['\b'] = @"\b",
+            ['\f'] = @"\f",
+            ['\n'] = @"\n",
+            ['\r'] = @"\r",
+            ['\t'] = @"\t",
+            ['\v'] = @"\v"
+        };
+
         // Output a value in C#-friendly syntax
         public static string ToCSharpValue(this object value) {
             if (value is bool)
                 return (bool) value ? "true" : "false";
-            if (value is string)
-                return $"\"{value}\"";
+            if (value is string str) {
+                // Replace standard escape characters
+                var s = new StringBuilder();
+                for (var i = 0; i < str.Length; i++)
+                    // Standard escape characters
+                    s.Append(escapeChars.ContainsKey(str[i]) ? escapeChars[str[i]]
+                        // Replace everything else with UTF-16 Unicode
+                        : str[i] < 32 || str[i] > 126 ? @"\u" + $"{str[i]:X4}"
+                        : str[i].ToString());
+                return $"\"{s}\"";
+            }
             if (!(value is char))
                 return (value?.ToString() ?? "null");
             var cValue = (int) (char) value;