Pascal (Lazarus/Delphi)

Markdown to HTML - Full Document, Custom Theme with Code Syntax Highlighting

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

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Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.JsonObject,
  Chilkat.StringBuilder;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  options: TJsonObject;
  sbHead: TStringBuilder;
  bCrlf: Boolean;
  sbMarkdown: TStringBuilder;
  sbHtml: TStringBuilder;

begin
  success := False;

  success := False;

  options := TJsonObject.Create;

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

  sbHead := TStringBuilder.Create;
  bCrlf := True;
  sbHead.AppendLine('<head>',bCrlf);
  sbHead.AppendLine('<style>',bCrlf);
  sbHead.AppendLine('body {',bCrlf);
  sbHead.AppendLine('  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;',bCrlf);
  sbHead.AppendLine('}',bCrlf);
  sbHead.AppendLine('</style>',bCrlf);
  sbHead.AppendLine('</head>',bCrlf);

  //  Each HTML section can be set individually.
  options.UpdateString('docType','<!DOCTYPE html>');
  options.UpdateString('rootElement','<html lang="en">');
  options.UpdateString('head',sbHead.GetAsString());
  options.UpdateString('bodyStart','<body>' + #10 + '<div id="content"');
  options.UpdateString('bodyEnd','</div>' + #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.
  options.UpdateString('extraHead','<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/themes/prism-coy.min.css" />');
  options.UpdateString('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>');

  sbMarkdown := TStringBuilder.Create;
  sbHtml := TStringBuilder.Create;

  success := sbMarkdown.LoadFile('qa_data/markdown/test1.md','utf-8');
  if (success = False) then
    begin
      WriteLn(sbMarkdown.LastErrorText);
      Exit;
    end;

  sbMarkdown.MarkdownToHtml(options,sbHtml);
  sbHtml.ToCRLF();

  WriteLn(sbHtml.GetAsString());

  //  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:

  //  


  options.Free;
  sbHead.Free;
  sbMarkdown.Free;
  sbHtml.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.