A game about forced loneliness, made by TACStudios
tacstudios.tngl.sh
1using System;
2using System.Collections.Generic;
3using System.Text;
4
5namespace Unity.Burst
6{
7#if BURST_COMPILER_SHARED
8 public static class SafeStringArrayHelper
9#else
10 internal static class SafeStringArrayHelper
11#endif
12 {
13 // Methods to help when needing to serialise arrays of strings safely
14 public static string SerialiseStringArraySafe(string[] array)
15 {
16 var s = new StringBuilder();
17 foreach (var entry in array)
18 {
19 s.Append($"{Encoding.UTF8.GetByteCount(entry)}]");
20 s.Append(entry);
21 }
22 return s.ToString();
23 }
24
25 public static string[] DeserialiseStringArraySafe(string input)
26 {
27 // Safer method of serialisation (len]path) e.g. "5]frank8]c:\\billy" ( new [] {"frank","c:\\billy"} )
28
29 // Since the len part of `len]path` is specified in bytes we'll be working on a byte array instead
30 // of a string, because functions like Substring expects char offsets and number of chars.
31 var bytes = Encoding.UTF8.GetBytes(input);
32 var listFolders = new List<string>();
33 var index = 0;
34 var length = bytes.Length;
35 while (index < length)
36 {
37 int len = 0;
38 // Read the decimal encoded length, terminated by an ']'
39 while (true)
40 {
41 if (index >= length)
42 {
43 throw new FormatException($"Invalid input `{input}`: reached end while reading length");
44 }
45
46 var d = bytes[index];
47
48 if (d == ']')
49 {
50 index++;
51 break;
52 }
53
54 if (d < '0' || d > '9')
55 {
56 throw new FormatException(
57 $"Invalid input `{input}` at {index}: Got non-digit character while reading length");
58 }
59
60 len = len * 10 + (d - '0');
61
62 index++;
63 }
64
65 listFolders.Add(Encoding.UTF8.GetString(bytes, index, len));
66 index += len;
67 }
68
69 return listFolders.ToArray();
70 }
71 }
72}