public override void parseDocument()
{
LoadStatus = LoadStatusEnum.Parsing;
String cacheFN = cacheFileName();
doc = new HtmlDocument();
doc.Load(cacheFN, System.Text.Encoding.UTF8);
// Don't overwrite an error status
if (LoadStatus == LoadStatusEnum.Parsing)
{
LoadStatus = LoadStatusEnum.LoadedSucessfully;
}
// Clear prior parse issues
ParseIssues.Clear();
}
public void ParseNode(XElement parseNode, HtmlNode htmlNode)
{
foreach (XElement childNode in parseNode.DescendantNodes())
{
switch (childNode.Name.ToString())
{
case "Title":
HtmlNode titleNode = nodeFromAttribute(htmlNode, childNode, "nodeXPath");
if (titleNode != null)
{
Title = ConvertHtmlText(titleNode.InnerText);
AddHeading(Title, "Heading 1");
// Add the provider postfix eg. - Royal Children's Hospital, for display of the document title in EMR
Title += ParentProvider.TitlePostfix;
}
break;
case "Image":
HtmlNode image = nodeFromAttribute(htmlNode, childNode, "urlXPath");
if (image != null)
{
AddWebImage(WebUtility.HtmlDecode(image.GetAttributeValue("src", "")), boolAttribute(childNode, "align", "right"));
}
break;
case "Synonym":
String xpath = stringAttribute(childNode, "nodesXPath");
if (xpath.Length > 0)
{
HtmlNodeCollection match = htmlNode.SelectNodes(xpath);
if (match != null)
{
foreach (HtmlNode synonym in match)
{
AddSynonym(ConvertHtmlText(synonym.InnerText.Trim()));
}
}
}
break;
case "Content":
HtmlNode contentBaseNode = nodeFromAttribute(htmlNode, childNode, "nodeXPath");
if (contentBaseNode != null)
{
wantNewParagraph = true;
newParagraphStyle = stringAttribute(childNode, "style");
WalkNodes(contentBaseNode, boolAttribute(childNode, "ignoreDivs"));
}
else
{
if (boolAttribute(childNode, "required"))
{
ParseIssues.Add(item: new ParseIssue {
issue = "Could not find match content node", location = 0
});
LoadStatus = LoadStatusEnum.ParseError;
return;
}
}
break;
case "Node":
HtmlNode subNode = nodeFromAttribute(htmlNode, childNode, "nodeXPath");
if (subNode != null)
{
ParseNode(childNode, subNode);
}
break;
}
}
}
public void WalkNodes(HtmlNode thisNode, bool ignoreDiv = false)
{
int strongStart = 0;
int emphasisStart = 0;
int underlineStart = 0;
int superscriptStart = 0;
int subscriptStart = 0;
bool skipList = false;
bool skipChildren = false;
// Open tag logic
switch (thisNode.NodeType)
{
case HtmlNodeType.Element:
switch (thisNode.Name)
{
case "h1":
NewParagraph("Heading 1");
break;
case "h2":
NewParagraph("Heading 2");
break;
case "h3":
case "h4":
case "h5":
case "h6":
case "thead":
NewParagraph("Heading 3");
break;
case "blockspan":
NewParagraph("Quote");
break;
case "br":
case "p":
if (thisNode.GetAttributeValue("class", "").Contains("highlighted"))
{
inHighlight = true;
}
break;
case "ul":
// Some pages have empty <ul> or <ol>... only start a list if there is a <li> item immediately below
if (thisNode.SelectNodes("li") == null || insideList)
{
skipList = true;
}
else
{
StartBulletList();
}
break;
case "ol":
// Some pages have empty <ul> or <ol>... only start a list if there is a <li> item immediately below
if (thisNode.SelectNodes("li") == null || insideList)
{
skipList = true;
}
else
{
StartOrderedList();
}
break;
case "b":
case "strong":
strongStart = getCurrentCursorPosition();
latestBlockStart = -1;
//Console.WriteLine("Bold start: {0}", getCurrentCursorPosition());
break;
case "i":
case "em":
emphasisStart = getCurrentCursorPosition();
latestBlockStart = -1;
break;
case "u":
underlineStart = getCurrentCursorPosition();
latestBlockStart = -1;
break;
case "h":
break;
case "div":
// wantNewParagraph = true;
break;
case "img":
string link = thisNode.GetAttributeValue("src", "");
if (link.Length > 0)
{
wantNewParagraph = true;
AddWebImage(WebUtility.HtmlDecode(link));
}
break;
case "li":
break;
case "td":
wantNewParagraph = true;
break;
case "sup":
superscriptStart = getCurrentCursorPosition();
latestBlockStart = -1;
break;
case "sub":
subscriptStart = getCurrentCursorPosition();
latestBlockStart = -1;
break;
case "del":
skipChildren = true;
break;
case "span":
case "a":
case "tbody":
case "tr":
case "script":
case "address":
case "svg":
case "path":
case "article":
case "figure":
case "figcaption":
// Accepted no implementation for now
break;
case "iframe":
// YouTube embed code
Regex youTubeEmbedRx = new Regex(@"youtube\.com\/embed\/(?<ytCode>[\w-]+)",
RegexOptions.Compiled | RegexOptions.IgnoreCase);
// Vimeo embed code
Regex vimeoEmbedRx = new Regex(@"player\.vimeo\.com\/video\/(?<vimeoCode>\w+)",
RegexOptions.Compiled | RegexOptions.IgnoreCase);
// Try to detect embedded youtube video
string sourceURL = thisNode.GetAttributeValue("src", "");
// Find matches.
MatchCollection ytMatches = youTubeEmbedRx.Matches(sourceURL);
MatchCollection vimeoMatches = vimeoEmbedRx.Matches(sourceURL);
if (ytMatches.Count > 0)
{
// Report on each match.
foreach (Match match in ytMatches)
{
GroupCollection groups = match.Groups;
NewParagraph("Heading 3");
AddText("View YouTube Video");
NewParagraph();
InsertQRCode(new Uri("https://www.youtube.com/watch?v=" + groups["ytCode"].Value));
}
}
else if (vimeoMatches.Count > 0)
{
// Report on each match.
foreach (Match match in vimeoMatches)
{
// OK it's a Vimeo URL...
GroupCollection groups = match.Groups;
NewParagraph("Heading 3");
AddText("View Vimeo Video");
NewParagraph();
InsertQRCode(new Uri("https://vimeo.com/" + groups["vimeoCode"].Value));
}
}
else
{
ParseIssues.Add(item: new ParseIssue {
issue = "Unhandled IFrame URL:" + sourceURL, location = getCurrentCursorPosition()
});
}
break;
case "table":
ParseIssues.Add(item: new ParseIssue {
issue = "Table Encountered, review needed", location = getCurrentCursorPosition()
});
break;
default:
ParseIssues.Add(item: new ParseIssue {
issue = "Unhandled Tag " + thisNode.Name, location = getCurrentCursorPosition()
});
break;
}
break;
case HtmlNodeType.Text:
ConvertAndAddText(thisNode.InnerText);
break;
case HtmlNodeType.Comment:
break;
default:
ParseIssues.Add(new ParseIssue {
issue = "Unhandled Node Type " + thisNode.NodeType, location = getCurrentCursorPosition()
});
break;
}
if (!skipChildren)
{
foreach (HtmlNode childNode in thisNode.ChildNodes)
{
if (ignoreDiv && childNode.NodeType == HtmlNodeType.Element && childNode.Name == "div")
{
continue;
}
WalkNodes(childNode);
}
}
// Close tag logic
switch (thisNode.NodeType)
{
case HtmlNodeType.Element:
switch (thisNode.Name)
{
case "h1":
case "h2":
case "h3":
case "h4":
case "h5":
case "h6":
wantNewParagraph = true;
break;
case "ul":
case "ol":
if (!skipList)
{
EndList();
}
break;
case "li":
wantNewParagraph = true;
inHighlight = false;
break;
case "br":
case "div":
case "p":
wantNewLine = true;
inHighlight = false;
break;
case "b":
case "strong":
if (latestBlockStart != -1 && strongStart < latestBlockStart && latestBlockStart < currentRange.Start)
{
strongStart = latestBlockStart;
}
//Console.WriteLine("Bold end: {0} (check end: {1})", currentRange.End, thisDoc.Paragraphs.Last.Range.End);
boldRanges.Add(new Tuple <int, int>(strongStart, getCurrentCursorPosition()));
//strongRange.Font.Bold = 1;
if (inHighlight)
{
highlightRanges.Add(new Tuple <int, int>(strongStart, getCurrentCursorPosition()));
}
break;
case "i":
case "em":
if (latestBlockStart != -1 && emphasisStart < latestBlockStart && latestBlockStart < currentRange.Start)
{
emphasisStart = latestBlockStart;
}
emphasisRanges.Add(new Tuple <int, int>(emphasisStart, getCurrentCursorPosition()));
if (inHighlight)
{
highlightRanges.Add(new Tuple <int, int>(emphasisStart, getCurrentCursorPosition()));
}
break;
case "u":
if (latestBlockStart != -1 && underlineStart < latestBlockStart && latestBlockStart < currentRange.Start)
{
underlineStart = latestBlockStart;
}
underlineRanges.Add(new Tuple <int, int>(underlineStart, getCurrentCursorPosition()));
if (inHighlight)
{
highlightRanges.Add(new Tuple <int, int>(underlineStart, getCurrentCursorPosition()));
}
break;
case "sub":
if (latestBlockStart != -1 && subscriptStart < latestBlockStart && latestBlockStart < currentRange.Start)
{
subscriptStart = latestBlockStart;
}
subscriptRanges.Add(new Tuple <int, int>(subscriptStart, getCurrentCursorPosition()));
if (inHighlight)
{
highlightRanges.Add(new Tuple <int, int>(subscriptStart, getCurrentCursorPosition()));
}
break;
case "sup":
if (latestBlockStart != -1 && superscriptStart < latestBlockStart && latestBlockStart < currentRange.Start)
{
superscriptStart = latestBlockStart;
}
subscriptRanges.Add(new Tuple <int, int>(superscriptStart, getCurrentCursorPosition()));
if (inHighlight)
{
highlightRanges.Add(new Tuple <int, int>(superscriptStart, getCurrentCursorPosition()));
}
break;
default:
break;
}
break;
default:
break;
}
}
