blob: 0233d7967347636ecad8742284625b00ec90094c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
using System;
using System.Diagnostics.Contracts;
using System.IO;
using System.Linq;
namespace StardewModdingAPI.Framework.Utilities
{
/// <summary>Provides utilities for normalising file paths.</summary>
internal static class PathUtilities
{
/*********
** Properties
*********/
/// <summary>The possible directory separator characters in a file path.</summary>
private static readonly char[] PossiblePathSeparators = new[] { '/', '\\', Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar }.Distinct().ToArray();
/// <summary>The preferred directory separator chaeacter in an asset key.</summary>
private static readonly string PreferredPathSeparator = Path.DirectorySeparatorChar.ToString();
/*********
** Public methods
*********/
/// <summary>Get the segments from a path (e.g. <c>/usr/bin/boop</c> => <c>usr</c>, <c>bin</c>, and <c>boop</c>).</summary>
/// <param name="path">The path to split.</param>
public static string[] GetSegments(string path)
{
return path.Split(PathUtilities.PossiblePathSeparators, StringSplitOptions.RemoveEmptyEntries);
}
/// <summary>Normalise path separators in a file path.</summary>
/// <param name="path">The file path to normalise.</param>
[Pure]
public static string NormalisePathSeparators(string path)
{
string[] parts = PathUtilities.GetSegments(path);
string normalised = string.Join(PathUtilities.PreferredPathSeparator, parts);
if (path.StartsWith(PathUtilities.PreferredPathSeparator))
normalised = PathUtilities.PreferredPathSeparator + normalised; // keep root slash
return normalised;
}
/// <summary>Get a directory or file path relative to a given source path.</summary>
/// <param name="sourceDir">The source folder path.</param>
/// <param name="targetPath">The target folder or file path.</param>
[Pure]
public static string GetRelativePath(string sourceDir, string targetPath)
{
// convert to URIs
Uri from = new Uri(sourceDir.TrimEnd(PathUtilities.PossiblePathSeparators) + "/");
Uri to = new Uri(targetPath.TrimEnd(PathUtilities.PossiblePathSeparators) + "/");
if (from.Scheme != to.Scheme)
throw new InvalidOperationException($"Can't get path for '{targetPath}' relative to '{sourceDir}'.");
// get relative path
string relative = PathUtilities.NormalisePathSeparators(Uri.UnescapeDataString(from.MakeRelativeUri(to).ToString()));
if (relative == "")
relative = "./";
return relative;
}
}
}
|
