/// <summary>
/// Checks whether it is possible to remove the attribute quotes
/// </summary>
/// <param name="tagFlags">HTML tag flags</param>
/// <param name="attributeValue">Attribute value</param>
/// <param name="attributeQuotesRemovalMode">Removal mode of HTML attribute quotes</param>
/// <returns>Result of check (true - can remove; false - cannot remove)</returns>
private static bool CanRemoveAttributeQuotes(HtmlTagFlags tagFlags, string attributeValue,
HtmlAttributeQuotesRemovalMode attributeQuotesRemovalMode)
{
bool result = false;
if (!tagFlags.Xml && attributeQuotesRemovalMode != HtmlAttributeQuotesRemovalMode.KeepQuotes)
{
if (!attributeValue.EndsWith("/"))
{
if (attributeQuotesRemovalMode == HtmlAttributeQuotesRemovalMode.Html4)
{
result = _html4AttributeValueNotRequireQuotesRegex.IsMatch(attributeValue);
}
else if (attributeQuotesRemovalMode == HtmlAttributeQuotesRemovalMode.Html5)
{
result = _html5AttributeValueNotRequireQuotesRegex.IsMatch(attributeValue);
}
}
}
return result;
}
/// <summary>
/// Checks whether it is possible to remove the attribute quotes
/// </summary>
/// <param name="attribute">Attribute</param>
/// <param name="attributeQuotesRemovalMode">Removal mode of HTML attribute quotes</param>
/// <returns>Result of check (true - can remove; false - cannot remove)</returns>
private static bool CanRemoveAttributeQuotes(HtmlAttribute attribute,
HtmlAttributeQuotesRemovalMode attributeQuotesRemovalMode)
{
string attributeValue = attribute.Value;
bool result = false;
if (attributeQuotesRemovalMode != HtmlAttributeQuotesRemovalMode.KeepQuotes)
{
if (!attributeValue.EndsWith("/"))
{
if (attributeQuotesRemovalMode == HtmlAttributeQuotesRemovalMode.Html4)
{
result = _html4AttributeValueNotRequireQuotesRegex.IsMatch(attributeValue);
}
else if (attributeQuotesRemovalMode == HtmlAttributeQuotesRemovalMode.Html5)
{
result = CommonRegExps.Html5AttributeValueNotRequireQuotes.IsMatch(attributeValue);
}
}
}
return result;
}
