private void WriteAnchor(string href, CssAttributes attrs)
{
if (!href.Contains("://"))
{
// relative links are to markdown files, so no .htm suffix
if (href.EndsWith(".htm"))
{
href = href.Substring(0, href.Length - 4);
}
href = this.baseUri + href;
}
attrs.Push("attribute", "true");
WriteText(href, attrs);
attrs.Pop("attribute");
}
public static CssAttributes Parse(string style, CssAttributes inherited)
{
if (string.IsNullOrWhiteSpace(style))
{
return(inherited);
}
CssAttributes result = new CssAttributes(inherited);
foreach (var part in style.Split(';'))
{
string[] nvalue = part.Split(':');
if (nvalue.Length == 2)
{
result.map[nvalue[0]] = nvalue[1];
}
else
{
Console.WriteLine("Ignoring CSS attribute: " + part);
}
}
return(result);
}
public CssAttributes(CssAttributes inherited)
{
this.inherited = inherited;
}
void WalkElements(XElement e, CssAttributes inherited)
{
double beforeSize = (inherited != null) ? inherited.GetFontSize() : 0;
CssAttributes attrs = CssAttributes.Parse((string)e.Attribute("style"), inherited);
double size = attrs.GetFontSize();
if (ignoreFirstParagraph && e.Name.LocalName == "p")
{
// ignore first paragraph.
ignoreFirstParagraph = false;
return;
}
bool heading = false;
if (beforeSize != size)
{
if (size == 12)
{
writer.Write("### ");
heading = true;
}
else if (size >= 13 && size < 17 && beforeSize != 13)
{
writer.Write("## ");
heading = true;
}
else if (size >= 17)
{
writer.Write("# ");
heading = true;
}
else
{
Console.WriteLine("Font size changed to {0} on element {1}", size, e.Name.LocalName);
}
}
if (heading)
{
attrs.Push("heading", "true");
}
foreach (XNode child in e.Nodes())
{
if (child is XElement)
{
XElement ce = (XElement)child;
switch (ce.Name.LocalName)
{
case "a":
writer.Write("[");
WalkElements(ce, attrs);
writer.Write("](");
WriteAnchor((string)ce.Attribute("href"), attrs);
writer.Write(")");
break;
case "h3":
CheckNewLine();
if (!string.IsNullOrWhiteSpace(ce.Value))
{
attrs.Push("font-size", "12pt");
attrs.Push("heading", "true");
writer.Write("### ");
WalkElements(ce, attrs);
attrs.Pop("font-size");
attrs.Pop("heading");
WriteLine();
}
break;
case "h2":
CheckNewLine();
if (!string.IsNullOrWhiteSpace(ce.Value))
{
attrs.Push("font-size", "13pt");
attrs.Push("heading", "true");
writer.Write("## ");
WalkElements(ce, attrs);
attrs.Pop("font-size");
attrs.Pop("heading");
WriteLine();
}
break;
case "h1":
CheckNewLine();
if (!string.IsNullOrWhiteSpace(ce.Value))
{
attrs.Push("font-size", "17pt");
attrs.Push("heading", "true");
writer.Write("# ");
WalkElements(ce, attrs);
attrs.Pop("font-size");
attrs.Pop("heading");
WriteLine();
}
break;
case "div":
case "p":
CheckNewLine();
WalkElements(ce, attrs);
WriteLine();
break;
case "li":
string listType = attrs.Find("list");
if (listType == "ordered")
{
writer.Write("1. ");
}
else
{
writer.Write("* ");
}
WalkElements(ce, attrs);
WriteLine();
break;
case "span":
if (!string.IsNullOrEmpty(ce.Value))
{
bool bold = attrs.Find("fond-weight") == "bold";
if (bold)
{
writer.Write("** ");
}
WalkElements(ce, attrs);
if (bold)
{
writer.Write("** ");
}
}
break;
case "img":
CheckNewLine();
writer.Write("![");
writer.Write("](");
WriteAnchor((string)ce.Attribute("src"), attrs);
writer.Write(")");
break;
case "ol":
CheckNewLine();
attrs.Push("list", "ordered");
WalkElements(ce, attrs);
attrs.Pop("list");
WriteLine();
break;
case "ul":
CheckNewLine();
attrs.Push("list", "unordered");
WalkElements(ce, attrs);
attrs.Pop("list");
WriteLine();
break;
case "br":
WriteLine();
break;
case "table":
throw new Exception("HTML Table doesn't translate to markdown");
default:
Console.WriteLine("Ignoring element: " + ce.Name.LocalName);
break;
}
}
else if (child is XText)
{
XText text = (XText)child;
WriteText(text.Value, attrs);
}
}
if (heading)
{
attrs.Pop("heading");
}
}
void WriteText(string value, CssAttributes attrs)
{
if (value == "Created with Microsoft OneNote 2016.")
{
return;
}
// onenote output puts newlines in lots of weird places which breaks
// markdown headings and other things.
value = value.Replace("\n", " ");
bool isAttribute = attrs.Find("attribute") == "true";
if (!isAttribute)
{
if (attrs.GetMarginLeft() > 0.3)
{
value = value.Replace("\n", " ");
if (!string.IsNullOrWhiteSpace(value))
{
writer.Write(" ");
linePos += 4;
}
}
if (attrs.Find("font-weight", false) == "bold")
{
writer.Write("**");
value = value.Trim(whitespace);
}
}
if (value.Replace("\n", " ").Contains("Did not get the expected response"))
{
Console.WriteLine("found it");
}
bool carriageReturn = false;
for (int i = 0, length = value.Length; i < length; i++)
{
char ch = value[i];
if (ch == '&')
{
i++;
int j = value.IndexOf(';', i);
if (j > i)
{
string name = value.Substring(i, j - i);
switch (name)
{
case "amp":
writer.Write('&');
this.linePos++;
break;
case "lt":
writer.Write('<');
this.linePos++;
break;
case "gt":
writer.Write('>');
this.linePos++;
break;
case "apos":
writer.Write('\'');
this.linePos++;
break;
case "quot":
writer.Write('"');
this.linePos++;
break;
default:
throw new Exception("Unsupported entity: " + name);
}
}
else
{
writer.Write('&');
this.linePos++;
}
}
else if (ch == '\r')
{
carriageReturn = true;
}
else if (ch == '\n')
{
carriageReturn = false;
WriteLine();
}
else if ((ch == ' ' || ch == '\t' || ch == 0xA0) && linePos == 0)
{
continue;
}
else
{
if (carriageReturn)
{
carriageReturn = false;
WriteLine();
}
writer.Write(ch);
this.linePos++;
}
}
if (!isAttribute)
{
if (attrs.Find("font-weight", false) == "bold")
{
writer.Write("** ");
}
}
}