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
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
#pragma warning disable CS1591
using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.IO;
using System.Linq;
using Jellyfin.Extensions;
namespace MediaBrowser.Model.Net
{
/// <summary>
/// Class MimeTypes.
/// </summary>
///
/// <remarks>
/// For more information on MIME types:
/// <list type="bullet">
/// <item>http://en.wikipedia.org/wiki/Internet_media_type</item>
/// <item>https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Common_types</item>
/// <item>http://www.iana.org/assignments/media-types/media-types.xhtml</item>
/// </list>
/// </remarks>
public static class MimeTypes
{
/// <summary>
/// Any extension in this list is considered a video file.
/// </summary>
private static readonly HashSet<string> _videoFileExtensions = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
{
".3gp",
".asf",
".avi",
".divx",
".dvr-ms",
".f4v",
".flv",
".img",
".iso",
".m2t",
".m2ts",
".m2v",
".m4v",
".mk3d",
".mkv",
".mov",
".mp4",
".mpg",
".mpeg",
".mts",
".ogg",
".ogm",
".ogv",
".rec",
".ts",
".rmvb",
".webm",
".wmv",
".wtv",
};
/// <summary>
/// Used for extensions not in <see cref="Model.MimeTypes"/> or to override them.
/// </summary>
private static readonly Dictionary<string, string> _mimeTypeLookup = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
{
// Type application
{ ".azw3", "application/vnd.amazon.ebook" },
// Type image
{ ".tbn", "image/jpeg" },
// Type text
{ ".ass", "text/x-ssa" },
{ ".ssa", "text/x-ssa" },
{ ".edl", "text/plain" },
{ ".html", "text/html; charset=UTF-8" },
{ ".htm", "text/html; charset=UTF-8" },
// Type video
{ ".mpegts", "video/mp2t" },
// Type audio
{ ".aac", "audio/aac" },
{ ".ac3", "audio/ac3" },
{ ".ape", "audio/x-ape" },
{ ".dsf", "audio/dsf" },
{ ".dsp", "audio/dsp" },
{ ".flac", "audio/flac" },
{ ".m4b", "audio/m4b" },
{ ".mp3", "audio/mpeg" },
{ ".vorbis", "audio/vorbis" },
{ ".webma", "audio/webm" },
{ ".wv", "audio/x-wavpack" },
{ ".xsp", "audio/xsp" },
};
private static readonly Dictionary<string, string> _extensionLookup = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
{
// Type application
{ "application/x-cbz", ".cbz" },
{ "application/x-javascript", ".js" },
{ "application/xml", ".xml" },
{ "application/x-mpegURL", ".m3u8" },
// Type audio
{ "audio/aac", ".aac" },
{ "audio/ac3", ".ac3" },
{ "audio/dsf", ".dsf" },
{ "audio/dsp", ".dsp" },
{ "audio/flac", ".flac" },
{ "audio/m4b", ".m4b" },
{ "audio/vorbis", ".vorbis" },
{ "audio/x-ape", ".ape" },
{ "audio/xsp", ".xsp" },
{ "audio/x-wavpack", ".wv" },
// Type image
{ "image/jpg", ".jpg" },
{ "image/x-png", ".png" },
// Type text
{ "text/plain", ".txt" },
{ "text/rtf", ".rtf" },
{ "text/x-ssa", ".ssa" },
// Type video
{ "video/vnd.mpeg.dash.mpd", ".mpd" },
{ "video/x-matroska", ".mkv" },
};
public static string GetMimeType(string path) => GetMimeType(path, "application/octet-stream");
/// <summary>
/// Gets the type of the MIME.
/// </summary>
/// <param name="filename">The filename to find the MIME type of.</param>
/// <param name="defaultValue">The default value to return if no fitting MIME type is found.</param>
/// <returns>The correct MIME type for the given filename, or <paramref name="defaultValue"/> if it wasn't found.</returns>
[return: NotNullIfNotNullAttribute("defaultValue")]
public static string? GetMimeType(string filename, string? defaultValue = null)
{
if (filename.Length == 0)
{
throw new ArgumentException("String can't be empty.", nameof(filename));
}
var ext = Path.GetExtension(filename);
if (_mimeTypeLookup.TryGetValue(ext, out string? result))
{
return result;
}
if (Model.MimeTypes.TryGetMimeType(filename, out var mimeType))
{
return mimeType;
}
// Catch-all for all video types that don't require specific mime types
if (_videoFileExtensions.Contains(ext))
{
return string.Concat("video/", ext.AsSpan(1));
}
return defaultValue;
}
public static string? ToExtension(string mimeType)
{
if (mimeType.Length == 0)
{
throw new ArgumentException("String can't be empty.", nameof(mimeType));
}
// handle text/html; charset=UTF-8
mimeType = mimeType.AsSpan().LeftPart(';').ToString();
if (_extensionLookup.TryGetValue(mimeType, out string? result))
{
return result;
}
var extensions = Model.MimeTypes.GetMimeTypeExtensions(mimeType);
if (extensions.Any())
{
return "." + extensions.First();
}
return null;
}
}
}
|
