(SQL Server) Markdown to HTML - Full Document, Custom Theme with Code Syntax Highlighting

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Demonstrates how to convert a complete Markdown document to HTML using your own custom theme with Cloudfare Prism's code syntax highlighting.

Note: This example requires Chilkat v11.2.0 or greater.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

    SELECT @success = 0

    DECLARE @options int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @options OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- Instead of specifying a "theme", provide values for the HTML document parts.

    DECLARE @sbHead int
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbHead OUT

    DECLARE @bCrlf int
    SELECT @bCrlf = 1
    EXEC sp_OAMethod @sbHead, 'AppendLine', @success OUT, '<head>', @bCrlf
    EXEC sp_OAMethod @sbHead, 'AppendLine', @success OUT, '<style>', @bCrlf
    EXEC sp_OAMethod @sbHead, 'AppendLine', @success OUT, 'body {', @bCrlf
    EXEC sp_OAMethod @sbHead, 'AppendLine', @success OUT, '  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;', @bCrlf
    EXEC sp_OAMethod @sbHead, 'AppendLine', @success OUT, '}', @bCrlf
    EXEC sp_OAMethod @sbHead, 'AppendLine', @success OUT, '</style>', @bCrlf
    EXEC sp_OAMethod @sbHead, 'AppendLine', @success OUT, '</head>', @bCrlf

    -- Each HTML section can be set individually.
    EXEC sp_OAMethod @options, 'UpdateString', @success OUT, 'docType', '<!DOCTYPE html>'
    EXEC sp_OAMethod @options, 'UpdateString', @success OUT, 'rootElement', '<html lang="en">'
    EXEC sp_OAMethod @sbHead, 'GetAsString', @sTmp0 OUT
    EXEC sp_OAMethod @options, 'UpdateString', @success OUT, 'head', @sTmp0
    EXEC sp_OAMethod @options, 'UpdateString', @success OUT, 'bodyStart', '<body>' + CHAR(10) + '<div id="content"'
    EXEC sp_OAMethod @options, 'UpdateString', @success OUT, 'bodyEnd', '</div>' + CHAR(10) + '</body>'

    -- We can add extra content to the bottom of the HTML head and body sections like this:
    -- Here we are using the Cloudfare Prism "coy" theme for code syntax higlighting.
    EXEC sp_OAMethod @options, 'UpdateString', @success OUT, 'extraHead', '<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/themes/prism-coy.min.css" />'
    EXEC sp_OAMethod @options, 'UpdateString', @success OUT, 'extraBody', '<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/prism.min.js"></script><script src ="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/plugins/autoloader/prism-autoloader.min.js"></script>'

    DECLARE @sbMarkdown int
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbMarkdown OUT

    DECLARE @sbHtml int
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbHtml OUT

    EXEC sp_OAMethod @sbMarkdown, 'LoadFile', @success OUT, 'qa_data/markdown/test1.md', 'utf-8'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @sbMarkdown, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @options
        EXEC @hr = sp_OADestroy @sbHead
        EXEC @hr = sp_OADestroy @sbMarkdown
        EXEC @hr = sp_OADestroy @sbHtml
        RETURN
      END

    EXEC sp_OAMethod @sbMarkdown, 'MarkdownToHtml', @success OUT, @options, @sbHtml
    EXEC sp_OAMethod @sbHtml, 'ToCRLF', @success OUT

    EXEC sp_OAMethod @sbHtml, 'GetAsString', @sTmp0 OUT
    PRINT @sTmp0

    -- The sample markdown input for this example is identical to the one at Markdown to HTML - Full Document, Raw, where you can view it.

    -- Sample HTML output as viewed in a browser:

    -- 

    EXEC @hr = sp_OADestroy @options
    EXEC @hr = sp_OADestroy @sbHead
    EXEC @hr = sp_OADestroy @sbMarkdown
    EXEC @hr = sp_OADestroy @sbHtml


END
GO