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Fix: 'a' tag doesn't support sub-tags #7

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merged 1 commit into from
Mar 22, 2022
Merged

Fix: 'a' tag doesn't support sub-tags #7

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102 changes: 82 additions & 20 deletions FB2Library/Elements/InternalLinkItem.cs
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Original file line number Diff line number Diff line change
@@ -1,27 +1,45 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;

namespace FB2Library.Elements
{
public class InternalLinkItem : StyleType
{
private readonly XNamespace lNamespace = @"http://www.w3.org/1999/xlink";

public string Type { get; set; }

public string HRef { get; set; }

public SimpleText LinkText { get; set; }
private readonly List<StyleType> _linkData = new List<StyleType>();
public List<StyleType> LinkData { get { return _linkData; } }

internal const string Fb2InternalLinkElementName = "a";


public override string ToString()
{
return LinkText.ToString();
StringBuilder builder = new StringBuilder();
builder.Append("<a");
if (string.IsNullOrEmpty(Type))
{
builder.Append($" type='{Type}'");
}
if (string.IsNullOrEmpty(HRef))
{
builder.Append($" href='{HRef}'");
}
builder.Append(">");
foreach (var item in _linkData)
{
builder.Append(item.ToString());
builder.Append(" ");
}
builder.Append("</a>");
return builder.ToString();
}

internal void Load(XElement xLink)
Expand All @@ -36,22 +54,51 @@ internal void Load(XElement xLink)
throw new ArgumentException("Element of wrong type passed", "xLink");
}

LinkText = null;
//if (xLink.Value != null)
if (xLink.HasElements)
{
LinkText = new SimpleText();
try
IEnumerable<XNode> childElements = xLink.Nodes();
foreach (var element in childElements)
{
LinkText.Load(xLink);
}
catch (Exception)
{
LinkText = null;
if ((element.NodeType == XmlNodeType.Element) && !IsSimpleText(element))
{
XElement xElement = (XElement)element;
if (xElement.Name.LocalName == InlineImageItem.Fb2InlineImageElementName)
{
InlineImageItem image = new InlineImageItem();
try
{
image.Load(xElement);
_linkData.Add(image);
}
catch (Exception)
{
}
}
}
else
{
SimpleText text = new SimpleText();
try
{
text.Load(element);
_linkData.Add(text);
}
catch (Exception)
{
continue;
}
}
}
}
else if (!string.IsNullOrEmpty(xLink.Value))
{
SimpleText text = new SimpleText();
text.Load(xLink);
_linkData.Add(text);
}

XAttribute xTypeAttr = xLink.Attribute("type");
if ((xTypeAttr != null)&& (xTypeAttr.Value != null))
if ((xTypeAttr != null) && (xTypeAttr.Value != null))
{
Type = xTypeAttr.Value;
}
Expand All @@ -64,20 +111,35 @@ internal void Load(XElement xLink)

}

private bool IsSimpleText(XNode element)
{
// if not element than we assume simple text
if (element.NodeType != XmlNodeType.Element)
{
return true;
}
XElement xElement = (XElement)element;
if (xElement.Name.LocalName == InternalLinkItem.Fb2InternalLinkElementName)
{
throw new ArgumentException("Schema doesn't support nested links");
}
return xElement.Name.LocalName != InlineImageItem.Fb2InlineImageElementName;
}

public XNode ToXML()
{
XElement xLink = new XElement(Fb2Const.fb2DefaultNamespace + Fb2InternalLinkElementName);
if (!string.IsNullOrEmpty(Type))
{
xLink.Add(new XAttribute("type",Type));
{
xLink.Add(new XAttribute("type", Type));
}
if(!string.IsNullOrEmpty(HRef))
if (!string.IsNullOrEmpty(HRef))
{
xLink.Add(new XAttribute(lNamespace + "href",HRef));
xLink.Add(new XAttribute(lNamespace + "href", HRef));
}
if (LinkText != null)
foreach (StyleType childElements in _linkData)
{
xLink.Add(LinkText.ToXML());
xLink.Add(childElements.ToXML());
}
return xLink;
}
Expand Down