// Read one HTML page and return a slide show
public SlideShow ReadSlideShow(string aSlideFile, out string aDiagnostic)
{
aDiagnostic = null;
// Determine the name of the future XML slide show file
string xmlFilePath = aSlideFile.Replace(".htm", ".xml");
SlideShow slideShow = new SlideShow(xmlFilePath);
//Console.WriteLine(" HtmlReader ReadSlideShow: parsing " + aSlideFile);
string html = ReadFile(aSlideFile);
if (html == null)
{
aDiagnostic = "ReadSlideShow: bad HTML slideshow file " + aSlideFile;
return(null);
}
else
{
ParseHTML parse = new ParseHTML();
parse.Source = html;
HtmlPreprocess htmlPreprocess = new HtmlPreprocess();
// Default overall title for the slide show, hopefully replaced with something better
string title = "A most peculiar day";
bool collectingTitle = false;
bool collectingCaption = false;
Caption caption = new Caption();
string link = "";
while (!parse.Eof())
{
char ch = parse.Parse();
if (ch == 0)
{
AttributeList tag = parse.GetTag();
if (tag.Name.Equals("title", StringComparison.CurrentCultureIgnoreCase))
{
collectingTitle = true; // Start collecting title
title = string.Empty;
}
else if (tag.Name.Equals("/title", StringComparison.CurrentCultureIgnoreCase))
{
collectingTitle = false; // Title now complete
slideShow.Title = title.Trim();
}
if (tag.Name.Equals("td", StringComparison.CurrentCultureIgnoreCase))
{
collectingCaption = true; // Start collecting new caption
caption = new Caption();
}
else if (tag.Name.Equals("/td", StringComparison.CurrentCultureIgnoreCase))
{
collectingCaption = false; // Any caption is now complete
if (!link.Equals(""))
{
// Got a link to go with the caption
slideShow.Add(link, caption);
link = "";
}
}
else if (collectingCaption &&
tag.Name.Equals("p", StringComparison.CurrentCultureIgnoreCase))
{
// HTML paragraph tag within caption
caption.NewLine();
}
else if (tag["href"] != null)
{
string href = tag["href"].Value.Replace('/', '\\');
if (IsPhoto(href))
{
//Console.WriteLine(" + HtmlReader ReadSlideShow: add " + href +
// " from tag " + tag.Name);
link = href;
}
}
// Preprocessing of regular character stream starts with clean sheet after tag
htmlPreprocess.Reset();
}
else
{
// Got a character
ch = htmlPreprocess.Add(ch);
if (ch != HtmlPreprocess.NullChar)
{
if (collectingTitle)
{
title += ch;
}
else if (collectingCaption)
{
caption.AddChar(ch);
}
}
}
}
return(slideShow);
}
}
