#include <tag.h>

Classes
class	Attribute

Public Types
typedef std::list< Attribute * >	AttributeList

Public Member Functions
	Tag (const std::string &name, const std::string &cdata=EmptyString)
	Tag (Tag *parent, const std::string &name, const std::string &cdata=EmptyString)
	Tag (const std::string &name, const std::string &attrib, const std::string &value)
	Tag (Tag *parent, const std::string &name, const std::string &attrib, const std::string &value)
virtual	~Tag ()
const std::string	xml () const
bool	setPrefix (const std::string &prefix)
const std::string &	prefix () const
const std::string &	prefix (const std::string &xmlns) const
bool	setXmlns (const std::string &xmlns, const std::string &prefix=EmptyString)
const std::string &	xmlns () const
const std::string &	xmlns (const std::string &prefix) const
bool	addAttribute (Attribute *attr)
bool	addAttribute (const std::string &name, const std::string &value)
bool	addAttribute (const std::string &name, int value)
bool	addAttribute (const std::string &name, long value)
void	setAttributes (const AttributeList &attributes)
void	addChild (Tag *child)
void	addChildCopy (const Tag *child)
bool	setCData (const std::string &cdata)
bool	addCData (const std::string &cdata)
const std::string &	name () const
const std::string	cdata () const
const AttributeList &	attributes () const
const TagList &	children () const
const std::string &	findAttribute (const std::string &name) const
bool	hasAttribute (const std::string &name, const std::string &value=EmptyString) const
Tag *	findChild (const std::string &name) const
Tag *	findChild (const std::string &name, const std::string &attr, const std::string &value=EmptyString) const
bool	hasChild (const std::string &name, const std::string &attr=EmptyString, const std::string &value=EmptyString) const
Tag *	findChildWithAttrib (const std::string &attr, const std::string &value=EmptyString) const
bool	hasChildWithAttrib (const std::string &attr, const std::string &value=EmptyString) const
TagList	findChildren (const std::string &name, const std::string &xmlns=EmptyString) const
void	removeChild (const std::string &name, const std::string &xmlns=EmptyString)
void	removeChild (Tag *tag)
void	removeAttribute (const std::string &attr, const std::string &value=EmptyString, const std::string &xmlns=EmptyString)
bool	hasChildWithCData (const std::string &name, const std::string &cdata) const
Tag *	parent () const
Tag *	clone () const
const std::string	findCData (const std::string &expression) const
const Tag *	findTag (const std::string &expression) const
ConstTagList	findTagList (const std::string &expression) const
bool	operator== (const Tag &right) const
bool	operator!= (const Tag &right) const
	operator bool () const

Detailed Description

This is an abstraction of an XML element.

Note: Use setXmlns() to set namespaces and namespace prefixes.

Author: Jakob Schroeter js@ca.nosp@m.maya.nosp@m..net

Since: 0.4

Definition at line 46 of file tag.h.

Member Typedef Documentation

typedef std::list<Attribute*> AttributeList

A list of XML element attributes.

Definition at line 187 of file tag.h.

Constructor & Destructor Documentation

Tag	(	const std::string &	name,
		const std::string &	cdata = `EmptyString`
	)

Creates a new tag with a given name (and XML character data, if given).

Parameters

name	The name of the element.
cdata	The XML character data of the element.

Definition at line 138 of file tag.cpp.

Tag	(	Tag *	parent,
		const std::string &	name,
		const std::string &	cdata = `EmptyString`
	)

Creates a new tag as a child tag of the given parent, with a given name (and XML character data, if given).

Parameters

parent	The parent tag.
name	The name of the element.
cdata	The XML character data of the element.

Definition at line 149 of file tag.cpp.

Tag	(	const std::string &	name,
		const std::string &	attrib,
		const std::string &	value
	)

Creates a new tag with a given name and an attribute.

Parameters

name	The name of the element.
attrib	The attribute name.
value	The attribute value.

Definition at line 163 of file tag.cpp.

Tag	(	Tag *	parent,
		const std::string &	name,
		const std::string &	attrib,
		const std::string &	value
	)

Creates a new tag as a child tag of the given parent, with a given name and an attribute.

Parameters

parent	The parent tag.
name	The name of the element.
attrib	The attribute name.
value	The attribute value.

Definition at line 176 of file tag.cpp.

~Tag ( )

virtual

Virtual destructor.

Definition at line 228 of file tag.cpp.

Member Function Documentation

bool addAttribute ( Attribute * attr )

Use this function to add a new attribute to the tag. The Tag will become the owner of the Attribute and take care of deletion. If an Attribute with the same name already exists, it will be replaced by the new one.

Parameters

attr	A pointer to the attribute to add.

Returns: True if the input is valid UTF-8, false otherwise. Invalid input will be ignored.

Since: 1.0

Note: Do not use this function to set XML namespaces, use setXmlns() instead.

Definition at line 353 of file tag.cpp.

bool addAttribute	(	const std::string &	name,
		const std::string &	value
	)

Use this function to add a new attribute to the tag.

Parameters

name	The name of the attribute.
value	The value of the attribute.

Note: Do not use this function to set XML namespaces, use setXmlns() instead.

Returns: True if the input is valid UTF-8, false otherwise. Invalid input will be ignored.

Definition at line 384 of file tag.cpp.

bool addAttribute	(	const std::string &	name,
		int	value
	)

Use this function to add a new attribute to the tag. The value is an int here.

Parameters

name	The name of the attribute.
value	The value of the attribute.

Note: Do not use this function to set XML namespaces, use setXmlns() instead.

Returns: True if the input is valid UTF-8, false otherwise. Invalid input will be ignored.

Since: 0.8

Definition at line 392 of file tag.cpp.

bool addAttribute	(	const std::string &	name,
		long	value
	)

Use this function to add a new attribute to the tag. The value is a long here.

Parameters

name	The name of the attribute.
value	The value of the attribute.

Returns: True if the input is valid UTF-8, false otherwise. Invalid input will be ignored.

Note: Do not use this function to set XML namespaces, use setXmlns() instead.

Since: 0.9

Definition at line 400 of file tag.cpp.

bool addCData ( const std::string & cdata )

Adds the string to the existing XML character data for this Tag.

Parameters

cdata The additional cdata.

Returns: True if the input is valid UTF-8, false otherwise. Invalid input will be ignored.

Definition at line 476 of file tag.cpp.

void addChild ( Tag * child )

Use this function to add a child node to the tag. The Tag will be owned by Tag.

Parameters

child The node to be inserted.

Definition at line 423 of file tag.cpp.

void addChildCopy ( const Tag * child )

Use this function to add a copy of the given element to the tag.

Parameters

child The node to be inserted.

Since: 0.9

Definition at line 438 of file tag.cpp.

const Tag::AttributeList & attributes ( ) const

Use this function to fetch a const list of attributes.

Returns: A constant reference to the list of attributes.

Definition at line 511 of file tag.cpp.

const std::string cdata ( ) const

Use this function to retrieve the XML character data of an element.

Returns: The cdata the element contains.

Definition at line 492 of file tag.cpp.

const TagList & children ( ) const

Use this function to fetch a const list of child elements.

Returns: A constant reference to the list of child elements.

Definition at line 505 of file tag.cpp.

Tag * clone ( ) const

This function creates a deep copy of this Tag.

Returns: An independent copy of the Tag.

Since: 0.7

Definition at line 665 of file tag.cpp.

const std::string & findAttribute ( const std::string & name ) const

This function can be used to retrieve the value of a Tag's attribute.

Parameters

name	The name of the attribute to look for.

Returns: The value of the attribute if found, an empty string otherwise.

Definition at line 584 of file tag.cpp.

const std::string findCData ( const std::string & expression ) const

Evaluates the given XPath expression and returns the result Tag's character data, if any. If more than one Tag match, only the first one's character data is returned.

Note: Currently, XPath support is somewhat limited. However, it should be useable for basic expressions. For now, see src/tests/xpath/xpath_test.cpp for supported expressions.

Parameters

expression An XPath expression to evaluate.

Returns: A matched Tag's character data, or the empty string.

Since: 1.0

Definition at line 794 of file tag.cpp.

Tag * findChild ( const std::string & name ) const

This function finds and returns the first element within the child elements of the current tag that has a matching tag name.

Parameters

name	The name of the element to search for.

Returns: The found Tag, or 0.

Definition at line 619 of file tag.cpp.

Tag * findChild	(	const std::string &	name,
		const std::string &	attr,
		const std::string &	value = `EmptyString`
	)		const

This function finds and returns the first element within the child elements of the current tag, that has a certain name, and a certain attribute with a certain value.

Parameters

name	The name of the element to search for.
attr	The name of the attribute of the child element.
value	The value of the attribute of the child element.

Returns: The found Tag, or 0.

Definition at line 630 of file tag.cpp.

TagList findChildren	(	const std::string &	name,
		const std::string &	xmlns = `EmptyString`
	)		const

Returns a list of child tags of the current tag with the given name.

Parameters

name	The name of the tags to look for.
xmlns	An optional namespace to check for.

Returns: A list of tags with the given name.

Note: The tags are still linked to the current Tag and should not be deleted.

Since: 0.9

Definition at line 709 of file tag.cpp.

Tag * findChildWithAttrib	(	const std::string &	attr,
		const std::string &	value = `EmptyString`
	)		const

This function checks whether the Tag has a child element which posesses a given attribute with an optional value. The name of the child element does not matter.

Parameters

attr	The name of the attribute of the child element.
value	The value of the attribute of the child element.

Returns: The child if found, 0 otherwise.

Definition at line 654 of file tag.cpp.

const Tag * findTag ( const std::string & expression ) const

Evaluates the given XPath expression and returns the result Tag. If more than one Tag match, only the first one is returned.

Note: Currently, XPath support is somewhat limited. However, it should be useable for basic expressions. For now, see src/tests/xpath/xpath_test.cpp for supported expressions.

Parameters

expression An XPath expression to evaluate.

Returns: A matched Tag, or 0.

Since: 0.9

Definition at line 800 of file tag.cpp.

ConstTagList findTagList ( const std::string & expression ) const

Evaluates the given XPath expression and returns the matched Tags.

Note: Currently, XPath support is somewhat limited. However, it should be useable for basic expressions. For now, see src/tests/xpath/xpath_test.cpp for supported expressions.

Parameters

expression An XPath expression to evaluate.

Returns: A list of matched Tags, or an empty TagList.

Since: 0.9

Definition at line 806 of file tag.cpp.

bool hasAttribute	(	const std::string &	name,
		const std::string &	value = `EmptyString`
	)		const

Checks whether the tag has a attribute with given name and optional value.

Parameters

name	The name of the attribute to check for.
value	The value of the attribute to check for.

Returns: Whether the attribute exists (optionally with the given value).

Definition at line 597 of file tag.cpp.

bool hasChild	(	const std::string &	name,
		const std::string &	attr = `EmptyString`,
		const std::string &	value = `EmptyString`
	)		const

This function checks whether the Tag has a child element with a given name, and optionally this child element is checked for having a given attribute with an optional value.

Parameters

name	The name of the child element.
attr	The name of the attribute of the child element.
value	The value of the attribute of the child element.

Returns: True if the given child element exists, false otherwise.

Definition at line 610 of file tag.cpp.

bool hasChildWithAttrib	(	const std::string &	attr,
		const std::string &	value = `EmptyString`
	)		const

inline

This function checks whether the Tag has a child element which posesses a given attribute with an optional value. The name of the child element does not matter.

Parameters

attr	The name of the attribute of the child element.
value	The value of the attribute of the child element.

Returns: True if any such child element exists, false otherwise.

Definition at line 475 of file tag.h.

bool hasChildWithCData	(	const std::string &	name,
		const std::string &	cdata
	)		const

This function checks whether a child element with given name exists and has XML character data that equals the given cdata string.

Parameters

name	The name of the child element.
cdata	The character data that has to exist in the child element.

Returns: True if a child element with given cdata exists, false otherwise.

Definition at line 642 of file tag.cpp.

const std::string& name ( ) const

inline

Use this function to retrieve the name of an element.

Returns: The name of the tag.

Definition at line 394 of file tag.h.

operator bool ( ) const

inline

Returns true if the Tag is valid, false otherwise.

Definition at line 587 of file tag.h.

bool operator!= ( const Tag & right ) const

inline

Checks two Tags for inequality. Order of attributes and child tags does matter.

Parameters

right The Tag to check against the current Tag.

Since: 0.9

Definition at line 582 of file tag.h.

bool operator== ( const Tag & right ) const

Checks two Tags for equality. Order of attributes and child tags does matter.

Parameters

right The Tag to check against the current Tag.

Since: 0.9

Definition at line 248 of file tag.cpp.

Tag* parent ( ) const

inline

Returns the tag's parent Tag.

Returns: The Tag above the current Tag. May be 0.

Definition at line 526 of file tag.h.

const std::string& prefix ( ) const

inline

Returns the namespace prefix for this Tag, if any.

Returns: The namespace prefix.

Since: 1.0

Definition at line 249 of file tag.h.

const std::string & prefix ( const std::string & xmlns ) const

Returns the namespace prefix for the given namespace.

Returns: The namespace prefix for the given namespace.

Since: 1.0

Definition at line 569 of file tag.cpp.

void removeAttribute	(	const std::string &	attr,
		const std::string &	value = `EmptyString`,
		const std::string &	xmlns = `EmptyString`
	)

Removes the attribute with the given name and optional value from this Tag.

Parameters

attr	The attribute's name.
value	The attribute's optional value.
xmlns	An optional namespace to check for.

Definition at line 774 of file tag.cpp.

void removeChild	(	const std::string &	name,
		const std::string &	xmlns = `EmptyString`
	)

Removes and deletes all child tags that have the given name and are, optionally, within the given namespace.

Parameters

name	The name of the tag(s) to remove from the list of child tags.
xmlns	An optional namespace to check for.

Definition at line 728 of file tag.cpp.

void removeChild ( Tag * tag )

Removes the given Tag from the list of child Tags.

Parameters

tag	The Tag to remove from the list of child Tags.

Note: The Tag tag is not deleted.

Definition at line 754 of file tag.cpp.

void setAttributes ( const AttributeList & attributes )

Sets the given attributes. Any existing attributes are lost.

Parameters

attributes The attributes to set.

Returns: True if the input is valid UTF-8, false otherwise. Invalid input will be ignored.

Note: Do not use this function to set XML namespaces, use setXmlns() instead.

Since: 0.9

Definition at line 408 of file tag.cpp.

bool setCData ( const std::string & cdata )

Sets the XML character data for this Tag.

Parameters

cdata The new cdata.

Returns: True if the input is valid UTF-8, false otherwise. Invalid input will be ignored.

Definition at line 446 of file tag.cpp.

bool setPrefix ( const std::string & prefix )

Sets the Tag's namespace prefix.

Parameters

prefix The namespace prefix.

Returns: True if the input is valid UTF-8, false otherwise. Invalid input will be ignored.

Since: 1.0

Definition at line 560 of file tag.cpp.

bool setXmlns	(	const std::string &	xmlns,
		const std::string &	prefix = `EmptyString`
	)

Sets an XML namespace with a given prefix, or the default namespace if prefix is empty.

Parameters

xmlns	The namespace value.
prefix	An optional namespace prefix.

Returns: True if the input is valid UTF-8, false otherwise. Invalid input will be ignored.

Since: 1.0

Definition at line 517 of file tag.cpp.

const std::string xml ( ) const

This function can be used to retrieve the complete XML of a tag as a string. It includes all the attributes, child nodes and character data.

Returns: The complete XML.

Definition at line 301 of file tag.cpp.

const std::string & xmlns ( ) const

Returns the namespace for this element. Namespace declarations in parent tags as well as prefixes will be taken into account.

Returns: The namespace for this element.

Since: 1.0

Definition at line 538 of file tag.cpp.

const std::string & xmlns ( const std::string & prefix ) const

Returns the namespace for the given prefix, or the default namespace if prefix is empty. Namespace declarations in parent tags will be taken into account. Consider the following XML:

<foo:bar xmlns:foo='foobar'/>

<bar/> is in the foobar namespace, having a prefix of foo. A call to prefix() will return 'foo'. A call to xmlns( "foo" ) or xmlns( prefix() ) will return 'foobar'. A call to xmlns() will also return 'foobar' (it is a shortcut to xmlns( prefix() ).

Parameters

prefix The namespace prefix to look up, or an empty string to fetch the default namespace.

Returns: The namespace for the given prefix, or the empty string if no such prefix exists. The default namespace if an empty prefix is given.

Since: 1.0

Definition at line 543 of file tag.cpp.

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

Classes

Public Types

Public Member Functions

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation