ckaczor/Common.Wpf
1
0
Fork 0
mirror of https://github.com/ckaczor/Common.Wpf.git synced 2026-01-13 17:22:47 -05:00
Code Issues Packages Projects Releases Wiki Activity

Escape XML text before parsing

Browse Source
This commit is contained in:
Chris Kaczor
2014-10-14 11:13:03 -04:00
parent 4cbb7d44f2
commit a7c9354e47
1 changed files with 28 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

50
HtmlLabelControl/TextParser.cs
View File

@@ -2,6 +2,7 @@
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Globalization;
using System.Security;
using System.Windows;
using System.Windows.Media;
using System.Xml;
@@ -16,6 +17,9 @@ namespace Common.Wpf.HtmlLabelControl
{
_parentControl = parentControl;
// Escape the supplied text
text = SecurityElement.Escape(text);
// Add a root tag so the parser is happy
text = string.Format(CultureInfo.InvariantCulture, "<body>{0}</body>", text);
@@ -23,22 +27,21 @@ namespace Common.Wpf.HtmlLabelControl
text = text.Replace("\r\n", "\n");
// Create an XML document and load it with the text
XmlDocument xmlDocument = new XmlDocument();
xmlDocument.PreserveWhitespace = true;
var xmlDocument = new XmlDocument { PreserveWhitespace = true };
xmlDocument.LoadXml(text);
// Create a list of text lines
Collection<TextLine> lines = new Collection<TextLine>();
var lines = new Collection<TextLine>();
// Walk over the nodes and build up the fragment list
walkNodes(xmlDocument.ChildNodes, lines);
WalkNodes(xmlDocument.ChildNodes, lines);
return lines;
}
private readonly Stack<TextFragmentStyle> _attributeStack = new Stack<TextFragmentStyle>();
private void walkNodes(XmlNodeList xmlNodeList, Collection<TextLine> textLines)
private void WalkNodes(XmlNodeList xmlNodeList, Collection<TextLine> textLines)
{
if (textLines.Count == 0)
textLines.Add(new TextLine());
@@ -53,19 +56,18 @@ namespace Common.Wpf.HtmlLabelControl
case "#TEXT":
// Split the fragment and the line endings
string[] lines = xmlNode.Value.Split('\n');
var lines = xmlNode.Value.Split('\n');
bool firstLine = true;
var firstLine = true;
foreach (string line in lines)
foreach (var line in lines)
{
TextLine textLine = (firstLine ? textLines[textLines.Count - 1] : new TextLine());
var textLine = (firstLine ? textLines[textLines.Count - 1] : new TextLine());
// Create a new fragment and fill the style information
TextFragment textFragment = new TextFragment(_parentControl);
textFragment.Text = line;
var textFragment = new TextFragment(_parentControl) { Text = line };
foreach (TextFragmentStyle s in _attributeStack)
foreach (var s in _attributeStack)
{
s.Apply(textFragment);
}
@@ -105,26 +107,30 @@ namespace Common.Wpf.HtmlLabelControl
case "FONT":
style = new TextFragmentStyle();
foreach (XmlAttribute attribute in xmlNode.Attributes)
if (xmlNode.Attributes != null)
{
switch (attribute.Name.ToUpperInvariant())
foreach (XmlAttribute attribute in xmlNode.Attributes)
{
case "SIZE":
style.Size = Convert.ToDouble(attribute.Value, CultureInfo.InvariantCulture);
break;
switch (attribute.Name.ToUpperInvariant())
{
case "SIZE":
style.Size = Convert.ToDouble(attribute.Value, CultureInfo.InvariantCulture);
break;
case "COLOR":
style.Color = (Brush) new BrushConverter().ConvertFromString(attribute.Value);
break;
case "COLOR":
style.Color = (Brush) new BrushConverter().ConvertFromString(attribute.Value);
break;
}
}
_attributeStack.Push(style);
}
_attributeStack.Push(style);
break;
}
if (xmlNode.ChildNodes.Count > 0)
walkNodes(xmlNode.ChildNodes, textLines);
WalkNodes(xmlNode.ChildNodes, textLines);
if (_attributeStack.Count > 0)
_attributeStack.Pop();