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
|
using System;
using System.Diagnostics.CodeAnalysis;
namespace MediaBrowser.Common.Providers
{
/// <summary>
/// Parsers for provider ids.
/// </summary>
public static class ProviderIdParsers
{
private const int ImdbMinNumbers = 7;
private const int ImdbMaxNumbers = 8;
private const string ImdbPrefix = "tt";
/// <summary>
/// Parses an IMDb id from a string.
/// </summary>
/// <param name="text">The text to parse.</param>
/// <param name="imdbId">The parsed IMDb id.</param>
/// <returns>True if parsing was successful, false otherwise.</returns>
public static bool TryFindImdbId(ReadOnlySpan<char> text, out ReadOnlySpan<char> imdbId)
{
// IMDb id is at least 9 chars (tt + 7 numbers)
while (text.Length >= 2 + ImdbMinNumbers)
{
var ttPos = text.IndexOf(ImdbPrefix);
if (ttPos == -1)
{
imdbId = default;
return false;
}
text = text.Slice(ttPos);
var i = 2;
var limit = Math.Min(text.Length, ImdbMaxNumbers + 2);
for (; i < limit; i++)
{
var c = text[i];
if (!IsDigit(c))
{
break;
}
}
// Skip if more than 8 digits + 2 chars for tt
if (i <= ImdbMaxNumbers + 2 && i >= ImdbMinNumbers + 2)
{
imdbId = text.Slice(0, i);
return true;
}
text = text.Slice(i);
}
imdbId = default;
return false;
}
/// <summary>
/// Parses an TMDb id from a movie url.
/// </summary>
/// <param name="text">The text with the url to parse.</param>
/// <param name="tmdbId">The parsed TMDb id.</param>
/// <returns>True if parsing was successful, false otherwise.</returns>
public static bool TryFindTmdbMovieId(ReadOnlySpan<char> text, out ReadOnlySpan<char> tmdbId)
=> TryFindProviderId(text, "themoviedb.org/movie/", out tmdbId);
/// <summary>
/// Parses an TMDb id from a series url.
/// </summary>
/// <param name="text">The text with the url to parse.</param>
/// <param name="tmdbId">The parsed TMDb id.</param>
/// <returns>True if parsing was successful, false otherwise.</returns>
public static bool TryFindTmdbSeriesId(ReadOnlySpan<char> text, out ReadOnlySpan<char> tmdbId)
=> TryFindProviderId(text, "themoviedb.org/tv/", out tmdbId);
/// <summary>
/// Parses an TVDb id from a url.
/// </summary>
/// <param name="text">The text with the url to parse.</param>
/// <param name="tvdbId">The parsed TVDb id.</param>
/// <returns>True if parsing was successful, false otherwise.</returns>
public static bool TryFindTvdbId(ReadOnlySpan<char> text, out ReadOnlySpan<char> tvdbId)
=> TryFindProviderId(text, "thetvdb.com/?tab=series&id=", out tvdbId);
private static bool TryFindProviderId(ReadOnlySpan<char> text, ReadOnlySpan<char> searchString, [NotNullWhen(true)] out ReadOnlySpan<char> providerId)
{
var searchPos = text.IndexOf(searchString);
if (searchPos == -1)
{
providerId = default;
return false;
}
text = text.Slice(searchPos + searchString.Length);
int i = 0;
for (; i < text.Length; i++)
{
var c = text[i];
if (!IsDigit(c))
{
break;
}
}
if (i >= 1)
{
providerId = text.Slice(0, i);
return true;
}
providerId = default;
return false;
}
private static bool IsDigit(char c)
{
return c >= '0' && c <= '9';
}
}
}
|
