34 lines
870 B
C#
34 lines
870 B
C#
using Microsoft.AspNetCore.Razor.TagHelpers;
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using System.Net;
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using static System.Text.RegularExpressions.Regex;
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namespace zero.TagHelpers;
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[HtmlTargetElement("app-striphtml", Attributes = "text")]
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public class StripHtmlTagHelper : TagHelper
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{
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[HtmlAttributeName("text")]
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public string Text { get; set; }
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[HtmlAttributeName("maxLength")]
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public int MaxLength { get; set; } = -1;
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public override void Process(TagHelperContext context, TagHelperOutput output)
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{
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output.TagName = string.Empty;
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string text = string.Empty;
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if (!string.IsNullOrWhiteSpace(Text))
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{
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text = WebUtility.HtmlDecode(Replace(Text, "<[^>]*(>|$)", string.Empty).Trim());
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if (MaxLength > 0 && text.Length > MaxLength)
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{
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text = string.Concat(text.AsSpan(0, MaxLength), "...");
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}
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}
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output.Content.SetHtmlContent(text);
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}
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}
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