From 3a6f0d2173de57650e0fb1c6fda289bf22e53365 Mon Sep 17 00:00:00 2001
From: Jonathan Magnan <info@zzzprojects.com>
Date: Sun, 19 Aug 2018 16:58:13 -0400
Subject: [PATCH] Update source to latest

Update source to latest
---
 src/HtmlAgilityPack.Shared/HtmlAttribute.cs   | 14 +++---
 src/HtmlAgilityPack.Shared/HtmlDocument.cs    | 48 ++++++++++++++++---
 src/HtmlAgilityPack.Shared/HtmlNode.cs        |  2 +-
 .../HtmlNodeCollection.cs                     |  2 +-
 src/HtmlAgilityPack.Shared/HtmlWeb.cs         | 18 +++++--
 5 files changed, 66 insertions(+), 18 deletions(-)

diff --git a/src/HtmlAgilityPack.Shared/HtmlAttribute.cs b/src/HtmlAgilityPack.Shared/HtmlAttribute.cs
index 6701b7c..0daa3be 100644
--- a/src/HtmlAgilityPack.Shared/HtmlAttribute.cs
+++ b/src/HtmlAgilityPack.Shared/HtmlAttribute.cs
@@ -83,10 +83,12 @@ public int ValueLength
             get { return _valuelength; }
         }
 
-        /// <summary>
-        /// Gets the qualified name of the attribute.
-        /// </summary>
-        public string Name
+	    public bool UseOriginalName { get; set; } = false;
+
+	    /// <summary>
+		/// Gets the qualified name of the attribute.
+		/// </summary>
+		public string Name
         {
             get
             {
@@ -95,8 +97,8 @@ public string Name
                     _name = _ownerdocument.Text.Substring(_namestartindex, _namelength);
                 }
 
-                return _name.ToLowerInvariant();
-            }
+	            return UseOriginalName ? _name : _name.ToLowerInvariant();
+			}
             set
             {
                 if (value == null)
diff --git a/src/HtmlAgilityPack.Shared/HtmlDocument.cs b/src/HtmlAgilityPack.Shared/HtmlDocument.cs
index cd56d09..4c51fea 100644
--- a/src/HtmlAgilityPack.Shared/HtmlDocument.cs
+++ b/src/HtmlAgilityPack.Shared/HtmlDocument.cs
@@ -60,6 +60,7 @@ public partial class HtmlDocument
         private int _remainderOffset;
         private ParseState _state;
         private Encoding _streamencoding;
+        private bool _useHtmlEncodingForStream;
 
         /// <summary>The HtmlDocument Text. Careful if you modify it.</summary>
         public string Text;
@@ -313,7 +314,20 @@ public static string GetXmlName(string name)
             return GetXmlName(name, false, false);
         }
 
-        public static string GetXmlName(string name, bool isAttribute, bool preserveXmlNamespaces)
+#if !METRO
+		public void UseAttributeOriginalName(string tagName)
+	    {
+		    foreach (var nod in this.DocumentNode.SelectNodes("//" + tagName))
+		    {
+			    foreach (var attribut in nod.Attributes)
+			    {
+				    attribut.UseOriginalName = true;
+			    }
+		    }
+		}
+#endif
+
+		public static string GetXmlName(string name, bool isAttribute, bool preserveXmlNamespaces)
         {
             string xmlname = string.Empty;
             bool nameisok = true;
@@ -498,6 +512,19 @@ public HtmlTextNode CreateTextNode(string text)
         /// <returns>The detected encoding.</returns>
         public Encoding DetectEncoding(Stream stream)
         {
+            return DetectEncoding(stream, false);
+        }
+
+        /// <summary>
+        /// Detects the encoding of an HTML stream.
+        /// </summary>
+        /// <param name="stream">The input stream. May not be null.</param>
+        /// <param name="checkHtml">The html is checked.</param>
+        /// <returns>The detected encoding.</returns>
+        public Encoding DetectEncoding(Stream stream, bool checkHtml)
+        {
+            _useHtmlEncodingForStream = checkHtml;
+
             if (stream == null)
             {
                 throw new ArgumentNullException("stream");
@@ -539,7 +566,7 @@ public Encoding DetectEncoding(TextReader reader)
             }
 
             StreamReader sr = reader as StreamReader;
-            if (sr != null)
+            if (sr != null && !_useHtmlEncodingForStream)
             {
                 Text = sr.ReadToEnd();
                 _streamencoding = sr.CurrentEncoding;
@@ -565,7 +592,7 @@ public Encoding DetectEncoding(TextReader reader)
             return _streamencoding;
         }
 
-
+     
         /// <summary>
         /// Detects the encoding of an HTML text.
         /// </summary>
@@ -1719,15 +1746,24 @@ private void CloseParentImplicitExplicitNode()
             {
                 hasNodeToClose = false;
 
+                bool forceExplicitEnd = false;
+
                 // CHECK if parent must be implicitely closed
                 if (IsParentImplicitEnd())
                 {
-                    CloseParentImplicitEnd();
-                    hasNodeToClose = true;
+                    if (OptionOutputAsXml)
+                    {
+                        forceExplicitEnd = true;
+                    }
+                    else
+                    {
+                        CloseParentImplicitEnd();
+                        hasNodeToClose = true;
+                    }
                 }
 
                 // CHECK if parent must be explicitely closed
-                if (IsParentExplicitEnd())
+                if (forceExplicitEnd || IsParentExplicitEnd())
                 {
                     CloseParentExplicitEnd();
                     hasNodeToClose = true;
diff --git a/src/HtmlAgilityPack.Shared/HtmlNode.cs b/src/HtmlAgilityPack.Shared/HtmlNode.cs
index 94b3022..bdbd77d 100644
--- a/src/HtmlAgilityPack.Shared/HtmlNode.cs
+++ b/src/HtmlAgilityPack.Shared/HtmlNode.cs
@@ -1744,7 +1744,7 @@ public virtual void WriteTo(TextWriter outText, int level = 0)
                         else
                             WriteContentTo(outText, level);
 
-                        if (!_isImplicitEnd)
+                        if (_ownerdocument.OptionOutputAsXml || !_isImplicitEnd)
                         {
                             outText.Write("</" + name);
                             if (!_ownerdocument.OptionOutputAsXml)
diff --git a/src/HtmlAgilityPack.Shared/HtmlNodeCollection.cs b/src/HtmlAgilityPack.Shared/HtmlNodeCollection.cs
index c3df3c2..ca194ed 100644
--- a/src/HtmlAgilityPack.Shared/HtmlNodeCollection.cs
+++ b/src/HtmlAgilityPack.Shared/HtmlNodeCollection.cs
@@ -291,7 +291,7 @@ public static HtmlNode FindFirst(HtmlNodeCollection items, string name)
         {
             foreach (HtmlNode node in items)
             {
-                if (node.Name.IndexOf(name, StringComparison.OrdinalIgnoreCase) != -1)
+                if (node.Name.Equals(name, StringComparison.OrdinalIgnoreCase))
                     return node;
                 if (!node.HasChildNodes) continue;
                 HtmlNode returnNode = FindFirst(node.ChildNodes, name);
diff --git a/src/HtmlAgilityPack.Shared/HtmlWeb.cs b/src/HtmlAgilityPack.Shared/HtmlWeb.cs
index 846003e..61f643b 100644
--- a/src/HtmlAgilityPack.Shared/HtmlWeb.cs
+++ b/src/HtmlAgilityPack.Shared/HtmlWeb.cs
@@ -1167,20 +1167,30 @@ public string GetCachePath(Uri uri)
                 throw new HtmlWebException("Cache is not enabled. Set UsingCache to true first.");
             }
 
-            string cachePath;
+			string cachePath;
             if (uri.AbsolutePath == "/")
             {
                 cachePath = Path.Combine(_cachePath, ".htm");
             }
             else
             {
-                if (uri.AbsolutePath[uri.AbsolutePath.Length - 1] == Path.AltDirectorySeparatorChar)
+
+	            string absolutePathWithoutBadChar = uri.AbsolutePath;
+
+	            string invalid = new string(Path.GetInvalidFileNameChars()) + new string(Path.GetInvalidPathChars());
+
+	            foreach (char c in invalid)
+	            {
+		            absolutePathWithoutBadChar = absolutePathWithoutBadChar.Replace(c.ToString(), "");
+	            }
+
+				if (uri.AbsolutePath[uri.AbsolutePath.Length - 1] == Path.AltDirectorySeparatorChar)
                 {
-                    cachePath = Path.Combine(_cachePath, (uri.Host + uri.AbsolutePath.TrimEnd(Path.AltDirectorySeparatorChar)).Replace('/', '\\') + ".htm");
+                    cachePath = Path.Combine(_cachePath, (uri.Host + absolutePathWithoutBadChar.TrimEnd(Path.AltDirectorySeparatorChar)).Replace('/', '\\') + ".htm");
                 }
                 else
                 {
-                    cachePath = Path.Combine(_cachePath, (uri.Host + uri.AbsolutePath.Replace('/', '\\')));
+                    cachePath = Path.Combine(_cachePath, (uri.Host + absolutePathWithoutBadChar.Replace('/', '\\')));
                 }
             }