/// <summary>
/// 将html转换为markdown
/// </summary>
/// <param name="source">待转换的html代码</param>
/// <returns>生成的markdown代码</returns>
public static string ConvertHtmlToMarkdown(string source)
{
if (string.IsNullOrEmpty(source))
{
return("");
}
var config = new ReverseMarkdown.Config
{
UnknownTags = Config.UnknownTagsOption.Bypass,
// generate GitHub flavoured markdown, supported for BR, PRE and table tags
GithubFlavored = false,
// will ignore all comments
RemoveComments = true,
// remove markdown output for links where appropriate
SmartHrefHandling = true
};
var converter = new ReverseMarkdown.Converter(config);
var markdown = converter.Convert(ClearHtml(source));
return(markdown);
}
private void buttonEditMarkdown_Click(object sender, EventArgs e)
{
if (htmlDescription.Visible)
{
var config = new ReverseMarkdown.Config
{
UnknownTags = ReverseMarkdown.Config.UnknownTagsOption.PassThrough, // Include the unknown tag completely in the result (default as well)
GithubFlavored = true, // generate GitHub flavoured markdown, supported for BR, PRE and table tags
RemoveComments = false, // will ignore all comments
SmartHrefHandling = true // remove markdown output for links where appropriate
};
var converter = new ReverseMarkdown.Converter(config);
string html = htmlDescription.BodyHtml;
string result = converter.Convert(html);
textDescription.Text = result;
}
else if (webView2.Visible)
{
textDescription.Text = webView2.TextUrl;
}
_com.Model.ContentType = "markdown";
EnableMarkdownView();
}
private void ProcessArticleRawContentSmartReader(Article article, ReverseMarkdown.Converter converter)
{
_logger.LogTrace($"Parsing article content for {article.ArticleUrl}");
var parsedarticle = SmartReader.Reader.ParseArticle(article.ArticleUrl, article.RawContent);
article.Content = converter.Convert(parsedarticle.IsReadable ? parsedarticle.Content : article.Description);
if (string.IsNullOrWhiteSpace(article.Content))
{
article.Content = "###### no content";
}
}
public async Task Usage()
{
#region Usage
var converter = new ReverseMarkdown.Converter();
string html = "This a sample <strong>paragraph</strong> from <a href=\"http://test.com\">my site</a>";
string result = converter.Convert(html);
#endregion
await Verifier.Verify(result);
}
private void ProcessArticleRawContentXPathSelector(Article article, ReverseMarkdown.Converter converter)
{
var html = new HtmlDocument();
html.LoadHtml(article.RawContent);
var document = html.DocumentNode;
article.Title = document.SelectSingleNode(article.Feed.ParserTitle)?.InnerText;
article.Description = document.SelectSingleNode(article.Feed.ParserDescription)?.InnerText;
article.Content = converter.Convert(
string.Join("", document.SelectNodes(article.Feed.ParserContent)
?.Select(x => x.OuterHtml))
);
article.Author = document.SelectSingleNode(article.Feed.ParserAuthor)?.InnerText;
article.Tags = string.Join(", ", document.SelectNodes(article.Feed.ParserTags)?.Select(x => x.InnerText));
}
public static string Convert(string html)
{
html = PreMarkdownConversion.Process(html);
var ignoreHtmlTags = new HashSet <string> {
"excerpt", "mark", "sup", "dd", "dl", "dt", "font", "char", "type", "crmwebsiteroot"
};
string result = "";
try
{
result = converter.Convert(html);
} catch (Exception e)
{
var error = e;
if (e.Message.Contains("Unknown tag: "))
{
var tag = e.Message.Replace("Unknown tag: ", "");
if (ignoreHtmlTags.Contains(tag))
{
}
else
{
result = html;
}
}
}
result = PostMarkdownConversion.Process(result);
if (string.IsNullOrEmpty(result))
{
return(" ");
}
return(result.Trim());
}
private static void CheckConversion(string html, string expected)
{
var converter = new Converter();
var result = converter.Convert(html);
Assert.Equal<string>(expected, result);
}
