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performance++

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This commit is contained in:
Claus Vium
2021-11-27 16:10:43 -07:00
committed by Cody Robibero
parent 4890454935
commit 065d3fa837
4 changed files with 20 additions and 13 deletions
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23
Emby.Server.Implementations/Library/PathExtensions.cs
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@@ -16,7 +16,7 @@ namespace Emby.Server.Implementations.Library
/// <param name="attribute">The attrib.</param>
/// <returns>System.String.</returns>
/// <exception cref="ArgumentException"><paramref name="str" /> or <paramref name="attribute" /> is empty.</exception>
public static string? GetAttributeValue(this string str, string attribute)
public static string? GetAttributeValue(this ReadOnlySpan<char> str, ReadOnlySpan<char> attribute)
{
if (str.Length == 0)
{
@@ -28,17 +28,24 @@ namespace Emby.Server.Implementations.Library
throw new ArgumentException("String can't be empty.", nameof(attribute));
}
string srch = "[" + attribute + "=";
int start = str.IndexOf(srch, StringComparison.OrdinalIgnoreCase);
if (start != -1)
var openBracketIndex = str.IndexOf('[');
var equalsIndex = str.IndexOf('=');
var closingBracketIndex = str.IndexOf(']');
while (openBracketIndex < equalsIndex && equalsIndex < closingBracketIndex)
{
start += srch.Length;
int end = str.IndexOf(']', start);
return str.Substring(start, end - start);
if (str[(openBracketIndex + 1)..equalsIndex].Equals(attribute, StringComparison.OrdinalIgnoreCase))
{
return str[(equalsIndex + 1)..closingBracketIndex].Trim().ToString();
}
str = str[(closingBracketIndex+ 1)..];
openBracketIndex = str.IndexOf('[');
equalsIndex = str.IndexOf('=');
closingBracketIndex = str.IndexOf(']');
}
// for imdbid we also accept pattern matching
if (string.Equals(attribute, "imdbid", StringComparison.OrdinalIgnoreCase))
if (attribute.Equals("imdbid", StringComparison.OrdinalIgnoreCase))
{
var match = ProviderIdParsers.TryFindImdbId(str, out var imdbId);
return match ? imdbId.ToString() : null;