private List<CodeSnippet> ReadSnippets(HtmlParser parser)
{
List<CodeSnippet> codeSnippetsList = new List<CodeSnippet>();
var codeNodes = parser.GetElements("pre/code");
if (codeNodes == null)
{
return codeSnippetsList;
}
StepNotificationHelper.Initialize(codeNodes.Count() + 1);
StepNotificationHelper.Step("Scanning snippets...");
foreach (HtmlNode codeElement in codeNodes)
{
if (this.Cancel)
{
throw new OperationCanceledException("Operation Cancelled");
}
StepNotificationHelper.Step();
var previousElement = parser.FindPreviousElement(codeElement.ParentNode);
if (previousElement != null && previousElement.Name == "span")
{
previousElement = parser.FindPreviousElement(previousElement);
}
if (previousElement == null || (previousElement.Name != "p" && previousElement.NodeType != HtmlNodeType.Comment))
{
continue;
}
HtmlNode commentNode = null;
if (previousElement.NodeType == HtmlNodeType.Comment)
{
commentNode = previousElement;
previousElement = parser.FindPreviousElement(previousElement);
if (previousElement.Name != "p" || !previousElement.InnerText.StartsWith("(Code Snippet"))
{
continue;
}
}
// Check that title format is "(Code Snippet - title goes here)"
Regex codeSnippetRegex = new Regex(@"^\(Code Snippet \p{Pd} .+\)$");
if (!codeSnippetRegex.IsMatch(previousElement.InnerText))
{
continue;
}
// Check that the language name is not null nor an empty string
string languageName;
if (codeElement.Attributes["Class"] != null)
{
languageName = HttpUtility.HtmlDecode(codeElement.Attributes["Class"].Value).Trim();
languageName = this.StandardizeCodeLanguage(languageName);
if (languageName == string.Empty)
{
continue;
}
}
else
{
continue;
}
// Search for the code snippet title
string codeSnippetTitle = HttpUtility.HtmlDecode(previousElement.InnerText);
codeSnippetTitle = codeSnippetTitle.Substring(16, codeSnippetTitle.Length - 17);
CodeSnippet codeSnippet = new CodeSnippet(this.SnippetTemplate, this.VSContentTemplate)
{
Code = HttpUtility.HtmlDecode(codeElement.InnerText.Trim()),
Language = languageName,
Title = codeSnippetTitle,
Author = this.Author
};
var commentLine = string.Empty;
if (commentNode != null)
{
commentLine = commentNode.InnerText.Replace("<!--", string.Empty).Replace("-->", string.Empty);
}
try
{
this.WrapUpSnippetCode(codeSnippet, commentLine);
codeSnippet.Code = codeSnippet.Code.Trim();
codeSnippetsList.Add(codeSnippet);
}
catch (Exception)
{
continue;
}
}
return codeSnippetsList;
}
private void WrapUpSnippetCode(CodeSnippet codeSnippet, string commentLine)
{
// If the commentLine is empty, then all the snippet should be inserted (default: all bold)
if (commentLine != string.Empty)
{
var linesToMark = new SortedSet<int>();
var strikedLines = new SortedSet<int>();
// These are the lines that are bolded
linesToMark = this.GetLinesFromCommand(commentLine, "mark");
try
{
// These are the lines that are strikethrough
strikedLines = this.GetLinesFromCommand(commentLine, "strike");
}
catch (Exception)
{
strikedLines = null;
}
if (strikedLines != null)
{
// remove the strikedthrough lines from the list
linesToMark.ExceptWith(strikedLines.ToList());
}
codeSnippet.Code = this.RemoveExtraLines(linesToMark, codeSnippet.Code);
}
}
private CodeSnippet ReadSnippetFromFile(string snippetPath)
{
CodeSnippet snippet = new CodeSnippet(this.SnippetTemplate, this.VSContentTemplate);
string snippetContent = File.ReadAllText(snippetPath);
var matchTitle = Regex.Match(snippetContent, "<title\\b[^>]*>(.*?)</title>", RegexOptions.IgnoreCase | RegexOptions.Multiline);
var matchLang = Regex.Match(snippetContent, "<code language=\"(.*)\">", RegexOptions.IgnoreCase | RegexOptions.Multiline);
var codeStart = snippetContent.IndexOf(matchLang.Value) + matchLang.Value.Length;
var codeEnd = snippetContent.ToLower().LastIndexOf("</code>");
if (snippetContent.Contains("<![CDATA["))
{
codeStart = snippetContent.IndexOf("<![CDATA[", codeStart) + 9;
codeEnd = snippetContent.LastIndexOf("]]>");
}
snippet.Title = matchTitle.Groups[1].Value;
snippet.Language = matchLang.Groups[1].Value;
snippet.Code = snippetContent.Substring(codeStart, codeEnd - codeStart);
return snippet;
}
