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Caching attribute values of img tags

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This commit is contained in:
Benedek Farkas 2024-12-03 15:27:13 +01:00
parent 03cef87ef3
commit 5185ed0c87
1 changed files with 9 additions and 5 deletions
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14
src/Orchard.Web/Modules/Orchard.MediaProcessing/Filters/MediaProcessingHtmlFilter.cs
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@ -25,6 +25,8 @@ namespace Orchard.MediaProcessing.Filters {
private MediaHtmlFilterSettingsPart _settingsPart;
private static readonly Regex _imageTagRegex = new Regex(@"<img\b[^>]*>", RegexOptions.IgnoreCase | RegexOptions.Compiled);
private static readonly ConcurrentDictionary<string, Regex> _attributeRegexes = new ConcurrentDictionary<string, Regex>();
private static readonly ConcurrentDictionary<string, ConcurrentDictionary<string, string>> _attributeValues =
new ConcurrentDictionary<string, ConcurrentDictionary<string, string>>();
private static readonly Dictionary<string, string> _validExtensions = new Dictionary<string, string> {
{ ".jpeg", "jpg" }, // For example: .jpeg supports compression (quality), format to 'jpg'.
{ ".jpg", "jpg" },
@ -173,11 +175,13 @@ namespace Orchard.MediaProcessing.Filters {
return imgTag;
}
private string GetAttributeValue(string tag, string attributeName) {
var match = GetAttributeRegex(attributeName).Match(tag);
return match.Success ? match.Groups[1].Value : null;
}
private string GetAttributeValue(string tag, string attributeName) =>
_attributeValues
.GetOrAdd(tag, _ => new ConcurrentDictionary<string, string>())
.GetOrAdd(attributeName, _ => {
var match = GetAttributeRegex(attributeName).Match(tag);
return match.Success ? match.Groups[1].Value : null;
});
private int GetAttributeValueInt(string tag, string attributeName) =>
int.TryParse(GetAttributeValue(tag, attributeName), out int result) ? result : 0;