XML Parser - MetaTrader 5 Library | MT5 EA Download - MetaTrader 5 Resources

Library for parsing XML documents. Pure MQL5, it does not use any external libraries.

To use this library, just include it:

 #include

 #include CXmlDocument document; blank start () 
{
string file = "file.xml" ;
Thin rope makes mistakes;
if (doc.CreateFromText(file, error))
  {
    CXmlElement * xmlItem = doc.FDocumentElement.GetChild( 0 );
for ( integer i = 0 ; i if (xmlItem.GetChild(i).GetName() == "layer" )
    {
      CXmlElement* layer = xmlItem.GetChild(i);
for ( integer j = 0 ; j if (layer.GetChild(j).GetName() == "neuron" )
        {
/* .... */ }
      }
    }
  }
}

notes:

Main components:

The CXml document class provides methods to download XML documents from files/strings and save them to files.

The CreateX function parses an XML document and creates a hierarchy of DOM models, which can be used to complete the use of F document elements

 classCXmlDocument {
Private :

BlankDoElementTrimText (CXmlElement &aXmlItem);
 
people :
    CXmlElement FDocumentElement;

BlankCXmlDocument ();
Blank ~CXmlDocument();
blankclear ();
BlankCopyTo (CXmlDocument &xmlDoc);
 
boolean create from text( const string &xml, string &error);
boolean CreateFromFile( const StringFileName , String &Error);
boolean saveToFile( const StringFileName );

StringGetXml ();
};

The CXml element class is the base interface for any XML document. It provides access to elements, attributes and content

classCXmlElement {
Private :
string F name;
    CXmlAttribute* FAttributes[];
    CXmlElement *FElements[];
String F text;
    CXmlElement* FParent;
people : 
//--- Constructor method blank CXmlElement();
Blank ~CXmlElement();
blank init( const string_name , const CXmlElement* aParent= void , const string_text = ”” );
BlankCopyTo (CXmlElement &aDst);
virtualBlankClear ( );
 
//--- Main service method string getname() constant ;
blank setName( const stringName );
StringGetText () constant ;
blank setText( const StringText );
    CXmlElement* GetParent () constant ;
BlankSetParent (CXmlElement* aParent);
 
//--- Property service method integer get property count () constant ;
Integer gets attribute index (CXmlAttribute* aAttr) constant ;
    CXmlAttribute* gets the attribute ( constant string name) constant ;
    CXmlAttribute* gets the attribute ( integer position) constant ;
String gets attribute value ( constant string name) constant ;
 
       CXmlAttribute* AttributeInsertAt (CXmlAttribute* aAttr, integer aPos);
    CXmlAttribute* AttributeAdd (CXmlAttribute* aAttr);
    CXmlAttribute* AttributeInsertAfter (CXmlAttribute* aAfter, CXmlAttribute* aAttr);
    CXmlAttribute* AttributeInsertBefore (CXmlAttribute* aBefore, CXmlAttribute* aAttr);
    CXmlAttribute* AttributeRemove (CXmlAttribute* aAttr);
    CXmlAttribute* attribute deletion ( integer aPos);
Blank attribute deletion (CXmlAttribute* aAttr);
BlankAttributeDelete ( integer aPos);
Blank attribute delete all();
 
//--- Subservice method integer get subitem count() constant ;
Integer get subindex (CXmlElement* aElement) constant ;
    CXmlElement* GetChild ( const string name) constant ;
    CXmlElement* GetChild ( integer position) constant ;
StringGetSubText ( const StringName ) const ;

    CXmlElement* ChildInsertAt (CXmlElement* aElement, integer aPos);
    CXmlElement* ChildAdd (CXmlElement* aElement);
    CXmlElement* ChildInsertAfter (CXmlElement* aAfter, CXmlElement* aElement);
    CXmlElement* ChildInsertBefore (CXmlElement* aBefore, CXmlElement* aElement);
    CXmlElement* ChildRemove (CXmlElement* aElement);
    CXmlElement* ChildRemove ( integer aPos);
blankChildDelete (CXmlElement* aElement);
blank subdelete( integer aPos);
Blank sub delete all();
 
StringGetXml ( integer level);
};

CXml Properties is a simple class for handling properties

Attachment download

📎 xmlbase.mqh (0.56 KB)

📎xmlattribute.mqh (3.95 KB)

📎 xmldocument.mqh (11.89 KB)

📎xmlelement.mqh (18.89 KB)

📎 xml_test.mq5 (1.39 KB)

Source: MQL5 #712