/// <summary>
/// Parses the source html to css boxes tree structure.
/// </summary>
/// <param name="source">the html source to parse</param>
public static CssBox ParseDocument(string source)
{
var root = CssBox.CreateBlock();
var curBox = root;
int endIdx = 0;
int startIdx = 0;
while (startIdx >= 0)
{
var tagIdx = source.IndexOf('<', startIdx);
if (tagIdx >= 0 && tagIdx < source.Length)
{
// add the html text as anon css box to the structure
AddTextBox(source, startIdx, tagIdx, ref curBox);
if (source[tagIdx + 1] == '!')
{
// skip the html crap elements (<!-- bla -->) (<!crap bla>)
startIdx = source.IndexOf(">", tagIdx + 2);
endIdx = startIdx > 0 ? startIdx + 1 : tagIdx + 2;
}
else
{
// parse element tag to css box structure
endIdx = ParseHtmlTag(source, tagIdx, ref curBox) + 1;
}
}
startIdx = tagIdx > -1 && endIdx > 0 ? endIdx : -1;
}
// handle pices of html without proper structure
if (endIdx < source.Length)
{
// there is text after the end of last element
var endText = new SubString(source, endIdx, source.Length - endIdx);
if (!endText.IsEmptyOrWhitespace())
{
var abox = CssBox.CreateBox(root);
abox.Text = endText;
}
}
return(root);
}
/// <summary>
/// Parses the source html to css boxes tree structure.
/// </summary>
/// <param name="source">the html source to parse</param>
public static CssBox ParseDocument(string source)
{
var root = CssBox.CreateBlock();
var curBox = root;
int endIdx = 0;
int startIdx = 0;
while (startIdx >= 0)
{
var tagIdx = source.IndexOf('<', startIdx);
if (tagIdx >= 0 && tagIdx < source.Length)
{
// add the html text as anon css box to the structure
AddTextBox(source, startIdx, tagIdx, ref curBox);
if (source[tagIdx + 1] == '!')
{
if (source[tagIdx + 2] == '-')
{
// skip the html comment elements (<!-- bla -->)
startIdx = source.IndexOf("-->", tagIdx + 2);
endIdx = startIdx > 0 ? startIdx + 3 : tagIdx + 2;
}
else
{
// skip the html crap elements (<!crap bla>)
startIdx = source.IndexOf(">", tagIdx + 2);
endIdx = startIdx > 0 ? startIdx + 1 : tagIdx + 2;
}
}
else
{
// parse element tag to css box structure
endIdx = ParseHtmlTag(source, tagIdx, ref curBox) + 1;
if (curBox.HtmlTag != null &&
curBox.HtmlTag.Name.Equals(HtmlConstants.Style, StringComparison.OrdinalIgnoreCase))
{
var endIdxS = endIdx;
endIdx = source.IndexOf("</style>", endIdx, StringComparison.OrdinalIgnoreCase);
if (endIdx > -1)
{
AddTextBox(source, endIdxS, endIdx, ref curBox);
}
}
}
}
startIdx = tagIdx > -1 && endIdx > 0 ? endIdx : -1;
}
// handle pieces of html without proper structure
if (endIdx > -1 && endIdx < source.Length)
{
// there is text after the end of last element
var endText = new SubString(source, endIdx, source.Length - endIdx);
if (!endText.IsEmptyOrWhitespace())
{
var abox = CssBox.CreateBox(root);
abox.Text = endText;
}
}
return(root);
}
