TinyXML-2  8.0.0
Public Member Functions | List of all members
tinyxml2::XMLElement Class Reference

#include <tinyxml2.h>

Inheritance diagram for tinyxml2::XMLElement:
tinyxml2::XMLNode

Public Member Functions

const char * Name () const
 Get the name of an element (which is the Value() of the node.)
 
void SetName (const char *str, bool staticMem=false)
 Set the name of the element.
 
virtual XMLElementToElement ()
 Safely cast to an Element, or null.
 
virtual bool Accept (XMLVisitor *visitor) const
 
const char * Attribute (const char *name, const char *value=0) const
 
int IntAttribute (const char *name, int defaultValue=0) const
 
unsigned UnsignedAttribute (const char *name, unsigned defaultValue=0) const
 See IntAttribute()
 
int64_t Int64Attribute (const char *name, int64_t defaultValue=0) const
 See IntAttribute()
 
uint64_t Unsigned64Attribute (const char *name, uint64_t defaultValue=0) const
 See IntAttribute()
 
bool BoolAttribute (const char *name, bool defaultValue=false) const
 See IntAttribute()
 
double DoubleAttribute (const char *name, double defaultValue=0) const
 See IntAttribute()
 
float FloatAttribute (const char *name, float defaultValue=0) const
 See IntAttribute()
 
XMLError QueryIntAttribute (const char *name, int *value) const
 
XMLError QueryUnsignedAttribute (const char *name, unsigned int *value) const
 See QueryIntAttribute()
 
XMLError QueryInt64Attribute (const char *name, int64_t *value) const
 See QueryIntAttribute()
 
XMLError QueryUnsigned64Attribute (const char *name, uint64_t *value) const
 See QueryIntAttribute()
 
XMLError QueryBoolAttribute (const char *name, bool *value) const
 See QueryIntAttribute()
 
XMLError QueryDoubleAttribute (const char *name, double *value) const
 See QueryIntAttribute()
 
XMLError QueryFloatAttribute (const char *name, float *value) const
 See QueryIntAttribute()
 
XMLError QueryStringAttribute (const char *name, const char **value) const
 See QueryIntAttribute()
 
XMLError QueryAttribute (const char *name, int *value) const
 
void SetAttribute (const char *name, const char *value)
 Sets the named attribute to value.
 
void SetAttribute (const char *name, int value)
 Sets the named attribute to value.
 
void SetAttribute (const char *name, unsigned value)
 Sets the named attribute to value.
 
void SetAttribute (const char *name, int64_t value)
 Sets the named attribute to value.
 
void SetAttribute (const char *name, uint64_t value)
 Sets the named attribute to value.
 
void SetAttribute (const char *name, bool value)
 Sets the named attribute to value.
 
void SetAttribute (const char *name, double value)
 Sets the named attribute to value.
 
void SetAttribute (const char *name, float value)
 Sets the named attribute to value.
 
void DeleteAttribute (const char *name)
 
const XMLAttributeFirstAttribute () const
 Return the first attribute in the list.
 
const XMLAttributeFindAttribute (const char *name) const
 Query a specific attribute in the list.
 
const char * GetText () const
 
void SetText (const char *inText)
 
void SetText (int value)
 Convenience method for setting text inside an element. See SetText() for important limitations.
 
void SetText (unsigned value)
 Convenience method for setting text inside an element. See SetText() for important limitations.
 
void SetText (int64_t value)
 Convenience method for setting text inside an element. See SetText() for important limitations.
 
void SetText (uint64_t value)
 Convenience method for setting text inside an element. See SetText() for important limitations.
 
void SetText (bool value)
 Convenience method for setting text inside an element. See SetText() for important limitations.
 
void SetText (double value)
 Convenience method for setting text inside an element. See SetText() for important limitations.
 
void SetText (float value)
 Convenience method for setting text inside an element. See SetText() for important limitations.
 
XMLError QueryIntText (int *ival) const
 
XMLError QueryUnsignedText (unsigned *uval) const
 See QueryIntText()
 
XMLError QueryInt64Text (int64_t *uval) const
 See QueryIntText()
 
XMLError QueryUnsigned64Text (uint64_t *uval) const
 See QueryIntText()
 
XMLError QueryBoolText (bool *bval) const
 See QueryIntText()
 
XMLError QueryDoubleText (double *dval) const
 See QueryIntText()
 
XMLError QueryFloatText (float *fval) const
 See QueryIntText()
 
unsigned UnsignedText (unsigned defaultValue=0) const
 See QueryIntText()
 
int64_t Int64Text (int64_t defaultValue=0) const
 See QueryIntText()
 
uint64_t Unsigned64Text (uint64_t defaultValue=0) const
 See QueryIntText()
 
bool BoolText (bool defaultValue=false) const
 See QueryIntText()
 
double DoubleText (double defaultValue=0) const
 See QueryIntText()
 
float FloatText (float defaultValue=0) const
 See QueryIntText()
 
XMLElementInsertNewChildElement (const char *name)
 
XMLCommentInsertNewComment (const char *comment)
 See InsertNewChildElement()
 
XMLTextInsertNewText (const char *text)
 See InsertNewChildElement()
 
XMLDeclarationInsertNewDeclaration (const char *text)
 See InsertNewChildElement()
 
XMLUnknownInsertNewUnknown (const char *text)
 See InsertNewChildElement()
 
virtual XMLNodeShallowClone (XMLDocument *document) const
 
virtual bool ShallowEqual (const XMLNode *compare) const
 
- Public Member Functions inherited from tinyxml2::XMLNode
const XMLDocumentGetDocument () const
 Get the XMLDocument that owns this XMLNode.
 
XMLDocumentGetDocument ()
 Get the XMLDocument that owns this XMLNode.
 
virtual XMLTextToText ()
 Safely cast to Text, or null.
 
virtual XMLCommentToComment ()
 Safely cast to a Comment, or null.
 
virtual XMLDocumentToDocument ()
 Safely cast to a Document, or null.
 
virtual XMLDeclarationToDeclaration ()
 Safely cast to a Declaration, or null.
 
virtual XMLUnknownToUnknown ()
 Safely cast to an Unknown, or null.
 
const char * Value () const
 
void SetValue (const char *val, bool staticMem=false)
 
int GetLineNum () const
 Gets the line number the node is in, if the document was parsed from a file.
 
const XMLNodeParent () const
 Get the parent of this node on the DOM.
 
bool NoChildren () const
 Returns true if this node has no children.
 
const XMLNodeFirstChild () const
 Get the first child node, or null if none exists.
 
const XMLElementFirstChildElement (const char *name=0) const
 
const XMLNodeLastChild () const
 Get the last child node, or null if none exists.
 
const XMLElementLastChildElement (const char *name=0) const
 
const XMLNodePreviousSibling () const
 Get the previous (left) sibling node of this node.
 
const XMLElementPreviousSiblingElement (const char *name=0) const
 Get the previous (left) sibling element of this node, with an optionally supplied name.
 
const XMLNodeNextSibling () const
 Get the next (right) sibling node of this node.
 
const XMLElementNextSiblingElement (const char *name=0) const
 Get the next (right) sibling element of this node, with an optionally supplied name.
 
XMLNodeInsertEndChild (XMLNode *addThis)
 
XMLNodeInsertFirstChild (XMLNode *addThis)
 
XMLNodeInsertAfterChild (XMLNode *afterThis, XMLNode *addThis)
 
void DeleteChildren ()
 
void DeleteChild (XMLNode *node)
 
XMLNodeDeepClone (XMLDocument *target) const
 
void SetUserData (void *userData)
 
void * GetUserData () const
 

Detailed Description

The element is a container class. It has a value, the element name, and can contain other elements, text, comments, and unknowns. Elements also contain an arbitrary number of attributes.

Member Function Documentation

◆ Accept()

virtual bool tinyxml2::XMLElement::Accept ( XMLVisitor visitor) const
virtual

Accept a hierarchical visit of the nodes in the TinyXML-2 DOM. Every node in the XML tree will be conditionally visited and the host will be called back via the XMLVisitor interface.

This is essentially a SAX interface for TinyXML-2. (Note however it doesn't re-parse the XML for the callbacks, so the performance of TinyXML-2 is unchanged by using this interface versus any other.)

The interface has been based on ideas from:

Which are both good references for "visiting".

An example of using Accept():

XMLPrinter printer;
tinyxmlDoc.Accept( &printer );
const char* xmlcstr = printer.CStr();

Implements tinyxml2::XMLNode.

◆ Attribute()

const char* tinyxml2::XMLElement::Attribute ( const char *  name,
const char *  value = 0 
) const

Given an attribute name, Attribute() returns the value for the attribute of that name, or null if none exists. For example:

const char* value = ele->Attribute( "foo" );

The 'value' parameter is normally null. However, if specified, the attribute will only be returned if the 'name' and 'value' match. This allow you to write code:

if ( ele->Attribute( "foo", "bar" ) ) callFooIsBar();

rather than:

if ( ele->Attribute( "foo" ) ) {
    if ( strcmp( ele->Attribute( "foo" ), "bar" ) == 0 ) callFooIsBar();
}

◆ DeleteAttribute()

void tinyxml2::XMLElement::DeleteAttribute ( const char *  name)

Delete an attribute.

◆ GetText()

const char* tinyxml2::XMLElement::GetText ( ) const

Convenience function for easy access to the text inside an element. Although easy and concise, GetText() is limited compared to getting the XMLText child and accessing it directly.

If the first child of 'this' is a XMLText, the GetText() returns the character string of the Text node, else null is returned.

This is a convenient method for getting the text of simple contained text:

<foo>This is text</foo>
    const char* str = fooElement->GetText();

'str' will be a pointer to "This is text".

Note that this function can be misleading. If the element foo was created from this XML:

    <foo><b>This is text</b></foo>

then the value of str would be null. The first child node isn't a text node, it is another element. From this XML:

    <foo>This is <b>text</b></foo>

GetText() will return "This is ".

◆ InsertNewChildElement()

XMLElement* tinyxml2::XMLElement::InsertNewChildElement ( const char *  name)

Convenience method to create a new XMLElement and add it as last (right) child of this node. Returns the created and inserted element.

◆ IntAttribute()

int tinyxml2::XMLElement::IntAttribute ( const char *  name,
int  defaultValue = 0 
) const

Given an attribute name, IntAttribute() returns the value of the attribute interpreted as an integer. The default value will be returned if the attribute isn't present, or if there is an error. (For a method with error checking, see QueryIntAttribute()).

◆ QueryAttribute()

XMLError tinyxml2::XMLElement::QueryAttribute ( const char *  name,
int *  value 
) const
inline

Given an attribute name, QueryAttribute() returns XML_SUCCESS, XML_WRONG_ATTRIBUTE_TYPE if the conversion can't be performed, or XML_NO_ATTRIBUTE if the attribute doesn't exist. It is overloaded for the primitive types, and is a generally more convenient replacement of QueryIntAttribute() and related functions.

If successful, the result of the conversion will be written to 'value'. If not successful, nothing will be written to 'value'. This allows you to provide default value:

int value = 10;
QueryAttribute( "foo", &value );        // if "foo" isn't found, value will still be 10

◆ QueryIntAttribute()

XMLError tinyxml2::XMLElement::QueryIntAttribute ( const char *  name,
int *  value 
) const
inline

Given an attribute name, QueryIntAttribute() returns XML_SUCCESS, XML_WRONG_ATTRIBUTE_TYPE if the conversion can't be performed, or XML_NO_ATTRIBUTE if the attribute doesn't exist. If successful, the result of the conversion will be written to 'value'. If not successful, nothing will be written to 'value'. This allows you to provide default value:

int value = 10;
QueryIntAttribute( "foo", &value );     // if "foo" isn't found, value will still be 10

◆ QueryIntText()

XMLError tinyxml2::XMLElement::QueryIntText ( int *  ival) const

Convenience method to query the value of a child text node. This is probably best shown by example. Given you have a document is this form:

    <point>
        <x>1</x>
        <y>1.4</y>
    </point>

The QueryIntText() and similar functions provide a safe and easier way to get to the "value" of x and y.

    int x = 0;
    float y = 0;    // types of x and y are contrived for example
    const XMLElement* xElement = pointElement->FirstChildElement( "x" );
    const XMLElement* yElement = pointElement->FirstChildElement( "y" );
    xElement->QueryIntText( &x );
    yElement->QueryFloatText( &y );
Returns
XML_SUCCESS (0) on success, XML_CAN_NOT_CONVERT_TEXT if the text cannot be converted to the requested type, and XML_NO_TEXT_NODE if there is no child text to query.

◆ SetText()

void tinyxml2::XMLElement::SetText ( const char *  inText)

Convenience function for easy access to the text inside an element. Although easy and concise, SetText() is limited compared to creating an XMLText child and mutating it directly.

If the first child of 'this' is a XMLText, SetText() sets its value to the given string, otherwise it will create a first child that is an XMLText.

This is a convenient method for setting the text of simple contained text:

<foo>This is text</foo>
    fooElement->SetText( "Hullaballoo!" );
<foo>Hullaballoo!</foo>

Note that this function can be misleading. If the element foo was created from this XML:

    <foo><b>This is text</b></foo>

then it will not change "This is text", but rather prefix it with a text element:

    <foo>Hullaballoo!<b>This is text</b></foo>

For this XML:

    <foo />

SetText() will generate

    <foo>Hullaballoo!</foo>

◆ ShallowClone()

virtual XMLNode* tinyxml2::XMLElement::ShallowClone ( XMLDocument document) const
virtual

Make a copy of this node, but not its children. You may pass in a Document pointer that will be the owner of the new Node. If the 'document' is null, then the node returned will be allocated from the current Document. (this->GetDocument())

Note: if called on a XMLDocument, this will return null.

Implements tinyxml2::XMLNode.

◆ ShallowEqual()

virtual bool tinyxml2::XMLElement::ShallowEqual ( const XMLNode compare) const
virtual

Test if 2 nodes are the same, but don't test children. The 2 nodes do not need to be in the same Document.

Note: if called on a XMLDocument, this will return false.

Implements tinyxml2::XMLNode.


The documentation for this class was generated from the following file: