(Delphi DLL) Scrub Xml

Demonstrates the Scrub method for some common XML cleaning needs.

Note: This example requires Chilkat v9.5.0.77 or greater.

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Xml;

...

procedure TForm1.Button1Click(Sender: TObject);
var
s: PWideChar;
xml: HCkXml;
success: Boolean;

begin
// The Scrub method has options for trimming whitespace from the ends of attributes and content,
// trimming inside whitespace, and for case conversion for tags and attribute names.

// Trimming inside whitespace is defined as replacing CR, LF, and tab chars with SPACE chars, and 
// removing extra SPACE chars so that at most one SPACE separates non-SPACE chars.

// For example, load the following XML:

s := '<xyz><td class=" colHoldingPercent col7" style="border-bottom-color: rgb(221, 221, 221);               border-image-outset: 0;  "> abc' + #13#10 + '123    456</td></xyz>';

xml := CkXml_Create();
success := CkXml_LoadXml(xml,s);

Memo1.Lines.Add(CkXml__getXml(xml));

// The XML before scrubbing is:

// <xyz>
//     <td class=" colHoldingPercent col7" style="border-bottom-color: rgb(221, 221, 221);               border-image-outset: 0;  ">abc
// 123    456</td>
// </xyz>

CkXml_Scrub(xml,'AttrTrimEnds,AttrTrimInside,ContentTrimEnds,ContentTrimInside');
Memo1.Lines.Add(CkXml__getXml(xml));

// The XML after scrubbing is:

// <?xml version="1.0" encoding="utf-8"?>
// <xyz>
//     <td class="colHoldingPercent col7" style="border-bottom-color: rgb(221, 221, 221); border-image-outset: 0;">abc 123 456</td>
// </xyz>

CkXml_Dispose(xml);

end;