Add project files.

2025-04-19 20:47:58 +03:00
parent 9e14d137ae
commit bfdcdb1f3b
66 changed files with 2394 additions and 0 deletions
@@ -0,0 +1,70 @@
+using HtmlAgilityPack;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+
+namespace Beam.Dynamic {
+    public static partial class HtmlNodeExtensions {
+        public static HtmlNode? ThenByClasses(this HtmlNode node, params string[] classes) {
+            return node.DescendCollectionTree(ThenByClass, classes);
+        }
+
+        public static HtmlNode? ThenByClass(this HtmlNode node, string @class, int count = 1) {
+            return node.ThenByFunc((x) => x.ChildNodes.FirstOrDefault((x) => x.HasClass(@class)), count);
+        }
+
+        public static HtmlNode? ThenByName(this HtmlNode node, string name, int count = 1) {
+            return node.ThenByFunc((x) => x.ChildNodes.FirstOrDefault((x) => x.Name == name), count);
+        }
+
+        public static HtmlNode? ThenByNames(this HtmlNode node, params string[] name) {
+            return node.DescendCollectionTree(ThenByName, name);
+        }
+
+        public static HtmlNode? DescendCollectionTree<T>(this HtmlNode node, Func<HtmlNode, T, int, HtmlNode?> func, params T[] values) {
+            return node.DescendCollectionTree((a, b) => func(a, b, 1), values);
+        }
+
+        public static HtmlNode? DescendCollectionTree<T>(this HtmlNode node, Func<HtmlNode, T, HtmlNode?> func, params T[] values) {
+            HtmlNode? result = node;
+            foreach (var value in values) {
+                if (result is null)
+                    return result;
+                result = func(result, value);
+            }
+
+            return result;
+        }
+
+        public static HtmlNode? ThenByFunc(this HtmlNode node, Func<HtmlNode, HtmlNode?> func, int count = 1) {
+            var ret = func(node);
+            if (count <= 1)
+                return ret;
+            return ret?.ThenByFunc(func, count - 1);
+        }
+
+        public static string[]? SplitInnerText(this HtmlNode? node, string separators)
+            => node?.InnerText.Split(separators, StringSplitOptions.RemoveEmptyEntries);
+
+        public static bool TextNodesOnly(HtmlNode n) => TextNodesOnlyRegex().Match(n.Name).Success;
+
+        public static string InnerLineSeparatedText(this HtmlNode? node, Func<HtmlNode, bool>? filter = null) {
+            if (node?.ChildNodes is null || node?.ChildNodes.Count == 0)
+                return "";
+            return node?.ChildNodes
+            .Where(filter ?? ((x) => true))
+            .DefaultIfEmpty()
+            .Select((x) => x?.InnerText)
+            .Where((x) => !string.IsNullOrWhiteSpace(x))
+            .DefaultIfEmpty()
+            .Aggregate((x, y) => $"{x}\n{y}")
+            ?? "";
+        }
+
+        [GeneratedRegex("p|h\\d")]
+        private static partial Regex TextNodesOnlyRegex();
+    }
+}