Base class for all XML objects in a document. More...

#include <tsxmlNode.h>

Inheritance diagram for ts::xml::Node:

[legend]

Collaboration diagram for ts::xml::Node:

Public Member Functions
virtual	~Node () override
	Virtual destructor.

size_t	childrenCount () const
	Get the number of children.

virtual void	clear ()
	Clear the content of the node.

virtual Node *	clone () const =0
	Clone the content of the node in a dynamically allocated object.

UString	debug () const
	Build a debug string for the node.

size_t	depth () const
	Get the depth of an XML element.

Document *	document ()
	Get the document into which the node is located.

const Document *	document () const
	Get the document into which the node is located.

Node *	firstChild ()
	Get the first child of a node.

const Node *	firstChild () const
	Get the first child of a node.

Element *	firstChildElement ()
	Get the first child Element of a node.

const Element *	firstChildElement () const
	Get the first child Element of a node.

bool	hasChildren () const
	Check if the node has children.

Node *	lastChild ()
	Get the last child.

const Node *	lastChild () const
	Get the last child.

size_t	lineNumber () const
	Get the line number in input document.

void	move (Node *newSibling, bool before)
	Move the node before or after another node, potentially to a new parent.

void	moveAfter (Node *newSibling)
	Move the node after another node, potentially to a new parent.

void	moveBefore (Node *newSibling)
	Move the node before another node, potentially to a new parent.

Node *	nextSibling ()
	Get the next sibling node.

const Node *	nextSibling () const
	Get the next sibling node.

Element *	nextSiblingElement ()
	Find the next sibling element.

const Element *	nextSiblingElement () const
	Find the next sibling element.

virtual UString	oneLiner () const
	Format the value as a one-liner XML text.

Node *	parent ()
	Get the parent's node.

const Node *	parent () const
	Get the parent's node.

bool	preserveSpace () const
	Check if the node or one of its ancestors has attribute xml:space="preserve".

Node *	previousSibling ()
	Get the previous sibling node.

const Node *	previousSibling () const
	Get the previous sibling node.

Element *	previousSiblingElement ()
	Find the previous sibling element.

const Element *	previousSiblingElement () const
	Find the previous sibling element.

virtual void	print (TextFormatter &output, bool keepNodeOpen=false) const =0
	Format the node for an output XML document.

virtual void	printClose (TextFormatter &output, size_t levels=std::numeric_limits< size_t >::max()) const
	Print the closing tags for the node.

void	removeComments (bool recurse)
	Remove all comments in the XML node.

void	reparent (Node *newParent, bool last=true)
	Attach the node to a new parent.

Report &	report () const
	Get a reference to the report object for the XML node.

bool	ringAlone () const
	Check if the node is alone in its own ring.

void	ringInsertAfter (RingNode *o)
	Insert this object in a ring after the specified node.

void	ringInsertBefore (RingNode *o)
	Insert this object in a ring before the specified node.

template<typename T >
T *	ringNext ()
	Get the next node in the ring.

template<typename T >
const T *	ringNext () const
	Get the next node in the ring.

template<typename T >
T *	ringPrevious ()
	Get the previous node in the ring.

template<typename T >
const T *	ringPrevious () const
	Get the previous node in the ring.

void	ringRemove ()
	Remove the node from the ring it belongs to and creates its own ring.

size_t	ringSize () const
	Count the number of element in the ring.

void	ringSwap (RingNode *o)
	Swap this object and another one in their rings.

void	setValue (const UString &value)
	Set the value of the node.

virtual bool	stickyOutput () const
	Check if the text shall be stuck to other elements in XML output.

virtual const Tweaks &	tweaks () const
	Get a constant reference to the current XML parsing and formatting tweaks for this node.

virtual UString	typeName () const =0
	Return a node type name, mainly for debug purpose.

const UString &	value () const
	Get the value of the node.

Protected Member Functions
	Node (const Node &other)
	Copy constructor.

	Node (Node *parent, const UString &value=UString(), bool last=true)
	Constructor.

	Node (Report &report, size_t line=0)
	Constructor.

Node *	identifyNextNode (TextParser &parser)
	Identify the next token in the document.

virtual bool	parseChildren (TextParser &parser)
	Parse children nodes and add them to the node.

virtual bool	parseNode (TextParser &parser, const Node *parent)=0
	Parse the node.

void	setPreserveSpace (bool on)
	Called by the subclass when its spaces shall be preserved.

Detailed Description

Base class for all XML objects in a document.

Implementation note on inheritance: Node is a subclass of RingNode. The "ring" is used to link all siblings. This inheritance should be private since it is an internal characteristics of Node. However, if we make this inheritance private, the dynamic_cast operations in RingNode fail. This is a very annoying C++ feature.

Constructor & Destructor Documentation

◆ Node() [1/3]

ts::xml::Node::Node	(	Report &	report,
		size_t	line = `0`
	)

explicitprotected

Constructor.

Parameters

[in,out]	report	Where to report errors.
[in]	line	Line number in input document.

◆ Node() [2/3]

ts::xml::Node::Node ( const Node & other )

protected

Copy constructor.

Parameters

[in] other Other instance to copy.

◆ Node() [3/3]

ts::xml::Node::Node	(	Node *	parent,
		const UString &	value = `UString()`,
		bool	last = `true`
	)

explicitprotected

Constructor.

Parameters

[in,out]	parent	The parent document into which the declaration is added.
[in]	value	Value of the node.
[in]	last	If true, the child is added at the end of the list of children. If false, it is added at the beginning.

Member Function Documentation

◆ lineNumber()

size_t ts::xml::Node::lineNumber ( ) const

inline

Get the line number in input document.

Returns: The line number in input document, zero if the node was built programmatically.

◆ clear()

virtual void ts::xml::Node::clear ( )

virtual

Clear the content of the node.

The node becomes empty but remains attached to its parent.

Reimplemented in ts::xml::Element.

◆ clone()

virtual Node * ts::xml::Node::clone ( ) const

pure virtual

Clone the content of the node in a dynamically allocated object.

This virtual method must be implemented by subclasses to allocate a object of the right class.

Returns: The address of a new XML node of the same class as this object, same content, same structure.

Implemented in ts::xml::Comment, ts::xml::Declaration, ts::xml::Document, ts::xml::Element, ts::xml::Text, and ts::xml::Unknown.

◆ reparent()

void ts::xml::Node::reparent	(	Node *	newParent,
		bool	last = `true`
	)

Attach the node to a new parent.

The node is first detached from its previous parent.

Parameters

[in,out]	newParent	New parent. If zero, the node becomes orphan. In that case, the node will no longer be freed by its parent and must be explicitly deleted.
[in]	last	If true, the child is added at the end of the list of children. If false, it is added at the beginning.

◆ moveBefore()

void ts::xml::Node::moveBefore ( Node * newSibling )

inline

Move the node before another node, potentially to a new parent.

Parameters

[in,out] newSibling A new sibling. The node will be moved before this one.

◆ moveAfter()

void ts::xml::Node::moveAfter ( Node * newSibling )

inline

Move the node after another node, potentially to a new parent.

Parameters

[in,out] newSibling A new sibling. The node will be moved after this one.

◆ move()

void ts::xml::Node::move	(	Node *	newSibling,
		bool	before
	)

Move the node before or after another node, potentially to a new parent.

Parameters

[in,out]	newSibling	A new sibling. The node will be moved before or after this one.
[in]	before	If true, move the node before newSibling, after it otherwise.

◆ parent() [1/2]

const Node * ts::xml::Node::parent ( ) const

inline

Get the parent's node.

Returns: The parent's node or a null pointer if this is a top-level document.

◆ parent() [2/2]

Node * ts::xml::Node::parent ( )

inline

Get the parent's node.

Returns: The parent's node or zero if this is a top-level document.

◆ document() [1/2]

const Document * ts::xml::Node::document ( ) const

inline

Get the document into which the node is located.

Returns: The node's document or zero if there is no document.

◆ document() [2/2]

Document * ts::xml::Node::document ( )

Get the document into which the node is located.

Returns: The node's document or zero if there is no document.

◆ tweaks()

virtual const Tweaks & ts::xml::Node::tweaks ( ) const

virtual

Get a constant reference to the current XML parsing and formatting tweaks for this node.

Returns: A constant reference to the XML tweaks to apply. When the node is part of a document, get the global tweaks of the document. Otherwise, get the default tweaks.

Reimplemented in ts::xml::Document.

◆ depth()

size_t ts::xml::Node::depth ( ) const

Get the depth of an XML element.

Returns: The depth of the element, ie. the number of ancestors.

◆ preserveSpace()

bool ts::xml::Node::preserveSpace ( ) const

Check if the node or one of its ancestors has attribute xml:space="preserve".

Returns: True if spaces shall be preserved.

◆ hasChildren()

bool ts::xml::Node::hasChildren ( ) const

inline

Check if the node has children.

Returns: True if the node has children.

◆ childrenCount()

size_t ts::xml::Node::childrenCount ( ) const

inline

Get the number of children.

Returns: The number of children.

◆ firstChild() [1/2]

const Node * ts::xml::Node::firstChild ( ) const

inline

Get the first child of a node.

Returns: The first child of the node or zero if there is no children.

◆ firstChild() [2/2]

Node * ts::xml::Node::firstChild ( )

inline

Get the first child of a node.

Returns: The first child of the node or zero if there is no children.

◆ lastChild() [1/2]

const Node * ts::xml::Node::lastChild ( ) const

inline

Get the last child.

Returns: The last child or zero if there is none.

◆ lastChild() [2/2]

Node * ts::xml::Node::lastChild ( )

inline

Get the last child.

Returns: The last child or nullptr if there is none.

◆ nextSibling() [1/2]

const Node * ts::xml::Node::nextSibling ( ) const

inline

Get the next sibling node.

Returns: The next sibling node or zero if the node is the last child.

◆ nextSibling() [2/2]

Node * ts::xml::Node::nextSibling ( )

Get the next sibling node.

Returns: The next sibling node or zero if the node is the last child.

◆ previousSibling() [1/2]

const Node * ts::xml::Node::previousSibling ( ) const

inline

Get the previous sibling node.

Returns: The previous sibling node or zero if the node is the first child.

◆ previousSibling() [2/2]

Node * ts::xml::Node::previousSibling ( )

Get the previous sibling node.

Returns: The previous sibling node or zero if the node is the first child.

◆ firstChildElement() [1/2]

const Element * ts::xml::Node::firstChildElement ( ) const

inline

Get the first child Element of a node.

Returns: The first child Element of the node or zero if there is no child Element.

◆ firstChildElement() [2/2]

Element * ts::xml::Node::firstChildElement ( )

Get the first child Element of a node.

Returns: The first child Element of the node or zero if there is no child Element.

◆ nextSiblingElement() [1/2]

const Element * ts::xml::Node::nextSiblingElement ( ) const

inline

Find the next sibling element.

Returns: Element address or zero if not found.

◆ nextSiblingElement() [2/2]

Element * ts::xml::Node::nextSiblingElement ( )

Find the next sibling element.

Returns: Element address or zero if not found.

◆ previousSiblingElement() [1/2]

const Element * ts::xml::Node::previousSiblingElement ( ) const

inline

Find the previous sibling element.

Returns: Element address or zero if not found.

◆ previousSiblingElement() [2/2]

Element * ts::xml::Node::previousSiblingElement ( )

Find the previous sibling element.

Returns: Element address or zero if not found.

◆ value()

const UString & ts::xml::Node::value ( ) const

inline

Get the value of the node.

The semantic of the value depends on the node subclass:

Comment: Content of the comment, without "".
Declaration: Content of the declaration, without "<?" and "?>".
Document: Empty.
Element: Name of the element.
Text: Text content of the element, including spaces and new-lines.
Unknown: Content of the tag, probably an uninterpreted DTD.

Returns: A constant reference to the node value, as a string.

◆ setValue()

void ts::xml::Node::setValue ( const UString & value )

inline

Set the value of the node.

Parameters

[in] value New value to set.

See also: value()

◆ removeComments()

void ts::xml::Node::removeComments ( bool recurse )

Remove all comments in the XML node.

Parameters

[in] recurse If true, apply recursively to all children nodes.

◆ typeName()

virtual UString ts::xml::Node::typeName ( ) const

pure virtual

Return a node type name, mainly for debug purpose.

Returns: Node type name.

Implemented in ts::xml::Comment, ts::xml::Declaration, ts::xml::Document, ts::xml::Element, ts::xml::Text, and ts::xml::Unknown.

◆ print()

virtual void ts::xml::Node::print	(	TextFormatter &	output,
		bool	keepNodeOpen = `false`
	)		const

pure virtual

Format the node for an output XML document.

Parameters

[in,out]	output	The output object to format the XML document.
[in]	keepNodeOpen	If true, keep the node open so that children may be printed later.

Implemented in ts::xml::Comment, ts::xml::Declaration, ts::xml::Document, ts::xml::Element, ts::xml::Text, and ts::xml::Unknown.

◆ printClose()

virtual void ts::xml::Node::printClose	(	TextFormatter &	output,
		size_t	levels = `std::numeric_limits< size_t >::max()`
	)		const

virtual

Print the closing tags for the node.

Typically used after print() when keepNodeOpen was true. The default implementation is to do nothing. Subclasses may replace this.

Parameters

[in,out]	output	The output object to format the XML document.
[in]	levels	Number of levels to close. By default, close the complete document. If zero, no output is produced.

Reimplemented in ts::xml::Document, and ts::xml::Element.

◆ oneLiner()

virtual UString ts::xml::Node::oneLiner ( ) const

virtual

Format the value as a one-liner XML text.

Returns: The formatted one-line XML text.

◆ stickyOutput()

virtual bool ts::xml::Node::stickyOutput ( ) const

virtual

Check if the text shall be stuck to other elements in XML output.

Returns: True if the text shall be stuck to other elements. False by default.

Reimplemented in ts::xml::Text.

◆ debug()

UString ts::xml::Node::debug ( ) const

Build a debug string for the node.

Returns: A debug string for the node.

◆ report()

Report & ts::xml::Node::report ( ) const

inline

Get a reference to the report object for the XML node.

Returns: A reference to the report object for the XML node.

◆ identifyNextNode()

Node * ts::xml::Node::identifyNextNode ( TextParser & parser )

protected

Identify the next token in the document.

Parameters

[in,out] parser The document parser.

Returns: A new node or zero either at end of document or before a "</" sequence. The returned node, when not zero, is not yet linked to its parent and siblings. When the returned node is not zero, the parser is located after the tag which identified the node ("<?", "<!- -", etc.)

◆ parseNode()

virtual bool ts::xml::Node::parseNode	(	TextParser &	parser,
		const Node *	parent
	)

protectedpure virtual

Parse the node.

Parameters

[in,out]	parser	The document parser. On input, the current position of the parser after the tag which identified the node ("<?", "<!- -", etc.) On output, it must be after the last character of the node.
[in]	parent	Candidate parent node, for information only, do not modify. Can be null.

Returns: True on success, false on error.

Implemented in ts::xml::Comment, ts::xml::Declaration, ts::xml::Document, ts::xml::Element, ts::xml::Text, and ts::xml::Unknown.

◆ parseChildren()

virtual bool ts::xml::Node::parseChildren ( TextParser & parser )

protectedvirtual

Parse children nodes and add them to the node.

Stop either at end of document or before a "</" sequence or on error.

Parameters

[in,out] parser The document parser.

Returns: True on success, false on error.

◆ setPreserveSpace()

void ts::xml::Node::setPreserveSpace ( bool on )

inlineprotected

Called by the subclass when its spaces shall be preserved.

Typically called when xml:space="preserve" is encountered.

Parameters

[in] on True is spaces shall be preserved.

◆ ringAlone()

bool ts::RingNode::ringAlone ( ) const

inlineinherited

Check if the node is alone in its own ring.

Returns: True if the node is alone in its own ring.

◆ ringInsertAfter()

void ts::RingNode::ringInsertAfter ( RingNode * o )

inherited

Insert this object in a ring after the specified node.

Parameters

[in] o A node of a ring. This object is inserted after o in the ring.

◆ ringInsertBefore()

void ts::RingNode::ringInsertBefore ( RingNode * o )

inherited

Insert this object in a ring before the specified node.

Parameters

[in] o A node of a ring. This object is inserted before o in the ring.

◆ ringSwap()

void ts::RingNode::ringSwap ( RingNode * o )

inherited

Swap this object and another one in their rings.

If the two objects belong to the same ring, their positions are swapped. If they belong to distinct rings, they also move to each other's ring.

Parameters

[in] o The node to swap with.

◆ ringNext() [1/2]

template<typename T >

T * ts::RingNode::ringNext ( )

inlineinherited

Get the next node in the ring.

Template Parameters

T	A superclass of RingNode, the expected type of the next object in the ring.

Returns: Address of the next node in the ring or zero if the next node is not a subclass of T.

◆ ringNext() [2/2]

template<typename T >

const T * ts::RingNode::ringNext ( ) const

inlineinherited

Get the next node in the ring.

Template Parameters

T	A superclass of RingNode, the expected type of the next object in the ring.

Returns: Address of the next node in the ring or zero if the next node is not a subclass of T.

◆ ringPrevious() [1/2]

template<typename T >

T * ts::RingNode::ringPrevious ( )

inlineinherited

Get the previous node in the ring.

Template Parameters

T	A superclass of RingNode, the expected type of the previous object in the ring.

Returns: Address of the previous node in the ring or zero if the previous node is not a subclass of T.

◆ ringPrevious() [2/2]

template<typename T >

const T * ts::RingNode::ringPrevious ( ) const

inlineinherited

Get the previous node in the ring.

Template Parameters

T	A superclass of RingNode, the expected type of the previous object in the ring.

Returns: Address of the previous node in the ring or zero if the previous node is not a subclass of T.

◆ ringSize()

size_t ts::RingNode::ringSize ( ) const

inherited

Count the number of element in the ring.

Warning: This method has a linear response time, avoid using it when possible.

Returns: The number of nodes in the ring.

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

tsxmlNode.h

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ Node() [1/3]

◆ Node() [2/3]

◆ Node() [3/3]

Member Function Documentation

◆ lineNumber()

◆ clear()

◆ clone()

◆ reparent()

◆ moveBefore()

◆ moveAfter()

◆ move()

◆ parent() [1/2]

◆ parent() [2/2]

◆ document() [1/2]

◆ document() [2/2]

◆ tweaks()

◆ depth()

◆ preserveSpace()

◆ hasChildren()

◆ childrenCount()

◆ firstChild() [1/2]

◆ firstChild() [2/2]

◆ lastChild() [1/2]

◆ lastChild() [2/2]

◆ nextSibling() [1/2]

◆ nextSibling() [2/2]

◆ previousSibling() [1/2]

◆ previousSibling() [2/2]

◆ firstChildElement() [1/2]

◆ firstChildElement() [2/2]

◆ nextSiblingElement() [1/2]

◆ nextSiblingElement() [2/2]

◆ previousSiblingElement() [1/2]

◆ previousSiblingElement() [2/2]

◆ value()

◆ setValue()

◆ removeComments()

◆ typeName()

◆ print()

◆ printClose()

◆ oneLiner()

◆ stickyOutput()

◆ debug()

◆ report()

◆ identifyNextNode()

◆ parseNode()

◆ parseChildren()

◆ setPreserveSpace()

◆ ringAlone()

◆ ringInsertAfter()

◆ ringInsertBefore()

◆ ringSwap()

◆ ringNext() [1/2]

◆ ringNext() [2/2]

◆ ringPrevious() [1/2]

◆ ringPrevious() [2/2]

◆ ringSize()