/// <summary>
/// Gets a quotation mark for attribute value
/// </summary>
/// <param name="attributeValue">Attribute value</param>
/// <returns>Quotation mark</returns>
private static string GetQuoteForAttributeValue(string attributeValue)
{
if (HtmlAttributeValueHelpers.IsNotRequireQuotesInHtml5(attributeValue))
{
return(string.Empty);
}
return("\"");
}
/// <summary>
/// Process a attributes
/// </summary>
/// <returns>List of attributes</returns>
private List <HtmlAttribute> ProcessAttributes()
{
string content = _innerContext.SourceCode;
int currentPosition = _innerContext.Position;
SourceCodeNodeCoordinates currentCoordinates = _innerContext.NodeCoordinates;
Match match = _attributeRegex.Match(content, currentPosition, _innerContext.RemainderLength);
while (match.Success)
{
GroupCollection groups = match.Groups;
Group attributeNameGroup = groups["attributeName"];
Group attributeEqualSignGroup = groups["attributeEqualSign"];
Group attributeValueGroup = groups["attributeValue"];
string attributeName = attributeNameGroup.Value;
string attributeNameInLowercase = attributeName;
if (Utils.ContainsUppercaseCharacters(attributeName))
{
attributeNameInLowercase = attributeName.ToLowerInvariant();
}
string attributeValue = null;
if (attributeEqualSignGroup.Success)
{
if (attributeValueGroup.Success)
{
attributeValue = attributeValueGroup.Value;
if (!string.IsNullOrWhiteSpace(attributeValue))
{
attributeValue = HtmlAttributeValueHelpers.Decode(attributeValue);
}
}
else
{
attributeValue = string.Empty;
}
}
var attributeNameCoordinates = SourceCodeNodeCoordinates.Empty;
int attributeNamePosition = -1;
if (attributeNameGroup.Success)
{
attributeNamePosition = attributeNameGroup.Index;
}
if (attributeNamePosition != -1)
{
int lineBreakCount;
int charRemainderCount;
SourceCodeNavigator.CalculateLineBreakCount(content, currentPosition,
attributeNamePosition - currentPosition, out lineBreakCount, out charRemainderCount);
attributeNameCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
currentCoordinates, lineBreakCount, charRemainderCount);
currentPosition = attributeNamePosition;
currentCoordinates = attributeNameCoordinates;
}
var attributeValueCoordinates = SourceCodeNodeCoordinates.Empty;
int attributeValuePosition = -1;
if (attributeValueGroup.Success)
{
attributeValuePosition = attributeValueGroup.Index;
}
if (attributeValuePosition != -1)
{
int lineBreakCount;
int charRemainderCount;
SourceCodeNavigator.CalculateLineBreakCount(content, currentPosition,
attributeValuePosition - currentPosition, out lineBreakCount, out charRemainderCount);
attributeValueCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
currentCoordinates, lineBreakCount, charRemainderCount);
currentPosition = attributeValuePosition;
currentCoordinates = attributeValueCoordinates;
}
var attribute = new HtmlAttribute(attributeName, attributeNameInLowercase, attributeValue,
HtmlAttributeType.Unknown, attributeNameCoordinates, attributeValueCoordinates);
_tempAttributes.Add(attribute);
_innerContext.IncreasePosition(match.Length);
match = _attributeRegex.Match(content, _innerContext.Position, _innerContext.RemainderLength);
}
int attributeCount = _tempAttributes.Count;
var attributes = new List <HtmlAttribute>(attributeCount);
for (int attributeIndex = 0; attributeIndex < attributeCount; attributeIndex++)
{
attributes.Add(_tempAttributes[attributeIndex]);
}
_tempAttributes.Clear();
return(attributes);
}
