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Add 'style' tag processing #10

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Merged
merged 2 commits into from
Mar 22, 2022
Merged

Add 'style' tag processing #10

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7a4545b
Add 'style' tag processing
luzmane Mar 22, 2022
72f2706
Merge branch 'master' into Add_style_tag_processing
wcoder Mar 22, 2022
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20 changes: 19 additions & 1 deletion FB2Library/Elements/InternalLinkItem.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -74,6 +74,18 @@ internal void Load(XElement xLink)
{
}
}
else if (xElement.Name.LocalName == StyleItem.StyleItemName)
{
StyleItem styleItem = new StyleItem();
try
{
styleItem.Load(xElement);
_linkData.Add(styleItem);
}
catch (Exception)
{
}
}
}
else
{
Expand Down Expand Up @@ -123,7 +135,13 @@ private bool IsSimpleText(XNode element)
{
throw new ArgumentException("Schema doesn't support nested links");
}
return xElement.Name.LocalName != InlineImageItem.Fb2InlineImageElementName;
switch (xElement.Name.LocalName)
{
case InlineImageItem.Fb2InlineImageElementName:
case StyleItem.StyleItemName:
return false;
}
return true;
}

public XNode ToXML()
Expand Down
39 changes: 26 additions & 13 deletions FB2Library/Elements/ParagraphItem.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -22,9 +22,9 @@ protected virtual string GetElementName()
{
return Fb2ParagraphElementName;
}

internal const string Fb2ParagraphElementName = "p";


public override string ToString()
{
Expand Down Expand Up @@ -78,24 +78,36 @@ protected void LoadData(XElement xParagraph)
}
catch (Exception)
{
}
}
}
}
else //if ( element.NodeType != XmlNodeType.Whitespace)
{
SimpleText text = new SimpleText();
else if (xElement.Name.LocalName == StyleItem.StyleItemName)
{
StyleItem styleItem = new StyleItem();
try
{
text.Load(element);
paragraphData.Add(text);
styleItem.Load(xElement);
paragraphData.Add(styleItem);
}
catch (Exception)
{
continue;
}
}
}
else //if ( element.NodeType != XmlNodeType.Whitespace)
{
SimpleText text = new SimpleText();
try
{
text.Load(element);
paragraphData.Add(text);
}
catch (Exception)
{
continue;
}
}
}

}
else if (!string.IsNullOrEmpty(xParagraph.Value))
{
Expand All @@ -122,7 +134,7 @@ protected void LoadData(XElement xParagraph)
{
Lang = xLang.Value;
}

}

internal virtual void Load(XElement xParagraph)
Expand Down Expand Up @@ -153,8 +165,9 @@ private bool IsSimpleText(XNode element)
{
case InternalLinkItem.Fb2InternalLinkElementName:
case InlineImageItem.Fb2InlineImageElementName:
case StyleItem.StyleItemName:
return false;

}
return true;
}
Expand Down
171 changes: 171 additions & 0 deletions FB2Library/Elements/StyleItem.cs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,171 @@
using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
using System.Xml.Linq;

namespace FB2Library.Elements
{
/// <summary>
/// Represents FB2 style tag
/// </summary>
public class StyleItem : IFb2TextItem, StyleType
{
internal const string StyleItemName = "style";

/// <summary>
/// Get/Set name of the sequence
/// </summary>
public string Name { get; set; }
/// <summary>
/// Get/Set language
/// </summary>
public string Lang { get; set; }
public List<StyleType> StyleData { get; set; } = new List<StyleType>();
protected virtual string GetElementName()
{
return StyleItemName;
}
public override string ToString()
{
StringBuilder builder = new StringBuilder($"<style name='{Name}' xml:lang='{Lang}'>");
foreach (var textItem in StyleData)
{
builder.Append(textItem.ToString());
builder.Append(" ");
}
builder.Append("</style>");
return builder.ToString();
}
/// <summary>
/// Load element data from the node
/// </summary>
/// <param name="xStyle"></param>
public void Load(XElement xStyle)
{
if (xStyle == null)
{
throw new ArgumentNullException("style");
}
if (xStyle.Name.LocalName != StyleItemName)
{
throw new ArgumentException(string.Format("The element is of type {0} while StyleItem accepts only {1} types", xStyle.Name.LocalName, StyleItemName));
}

Lang = null;
XAttribute xLang = xStyle.Attribute(XNamespace.Xml + "lang");
if (xLang != null)
{
Lang = xLang.Value;
}

Name = string.Empty;
XAttribute xName = xStyle.Attribute("name");
if (xName != null && xName.Value != null)
{
Name = xName.Value;
}

if (xStyle.HasElements)
{
IEnumerable<XNode> childElements = xStyle.Nodes();
foreach (var element in childElements)
{
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);
StyleData.Add(image);
}
catch (Exception)
{
}
}
else if (xElement.Name.LocalName == InternalLinkItem.Fb2InternalLinkElementName)
{
InternalLinkItem linkItem = new InternalLinkItem();
try
{
linkItem.Load(xElement);
StyleData.Add(linkItem);
}
catch (Exception)
{
}
}
else if (xElement.Name.LocalName == StyleItemName)
{
StyleItem styleItem = new StyleItem();
try
{
styleItem.Load(xElement);
StyleData.Add(styleItem);
}
catch (Exception)
{
}
}
}
else
{
SimpleText text = new SimpleText();
try
{
text.Load(element);
StyleData.Add(text);
}
catch (Exception)
{
}
}
}

}
else if (!string.IsNullOrEmpty(xStyle.Value))
{
SimpleText text = new SimpleText();
text.Load(xStyle);
StyleData.Add(text);
}
}
private bool IsSimpleText(XNode element)
{
// if not element than we assume simple text
if (element.NodeType != XmlNodeType.Element)
{
return true;
}
XElement xElement = (XElement)element;
switch (xElement.Name.LocalName)
{
case InternalLinkItem.Fb2InternalLinkElementName:
case InlineImageItem.Fb2InlineImageElementName:
case StyleItem.StyleItemName:
return false;
}
return true;
}
public XNode ToXML()
{
if (Name == null || string.IsNullOrEmpty(Name))
{
throw new Exception("Name attribute is required by standard");
}
XElement xStyle = new XElement(Fb2Const.fb2DefaultNamespace + StyleItemName, new XAttribute("name", Name));
if (!string.IsNullOrEmpty(Lang))
{
xStyle.Add(new XAttribute(XNamespace.Xml + "lang", Lang));
}
foreach (StyleType childElements in StyleData)
{
xStyle.Add(childElements.ToXML());
}
return xStyle;
}
}
}