XMLParser

Inherits: Reference < Object

Low-level class for creating parsers for XML files.

Description

This class can serve as base to make custom XML parsers. Since XML is a very flexible standard, this interface is low-level so it can be applied to any possible schema.

Methods

int	get_attribute_count ( ) const
String	get_attribute_name ( int idx ) const
String	get_attribute_value ( int idx ) const
int	get_current_line ( ) const
String	get_named_attribute_value ( String name ) const
String	get_named_attribute_value_safe ( String name ) const
String	get_node_data ( ) const
String	get_node_name ( ) const
int	get_node_offset ( ) const
NodeType	get_node_type ( )
bool	has_attribute ( String name ) const
bool	is_empty ( ) const
Error	open ( String file )
Error	open_buffer ( PoolByteArray buffer )
Error	read ( )
Error	seek ( int position )
void	skip_section ( )

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Enumerations

enum NodeType:

NodeType NODE_NONE = 0

There's no node (no file or buffer opened).

NodeType NODE_ELEMENT = 1

Element (tag).

NodeType NODE_ELEMENT_END = 2

End of element.

NodeType NODE_TEXT = 3

Text node.

NodeType NODE_COMMENT = 4

Comment node.

NodeType NODE_CDATA = 5

CDATA content.

NodeType NODE_UNKNOWN = 6

Unknown node.

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Method Descriptions

int get_attribute_count ( ) const

Gets the amount of attributes in the current element.

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String get_attribute_name ( int idx ) const

Gets the name of the attribute specified by the index in idx argument.

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String get_attribute_value ( int idx ) const

Gets the value of the attribute specified by the index in idx argument.

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int get_current_line ( ) const

Gets the current line in the parsed file (currently not implemented).

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String get_named_attribute_value ( String name ) const

Gets the value of a certain attribute of the current element by name. This will raise an error if the element has no such attribute.

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String get_named_attribute_value_safe ( String name ) const

Gets the value of a certain attribute of the current element by name. This will return an empty String if the attribute is not found.

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String get_node_data ( ) const

Gets the contents of a text node. This will raise an error in any other type of node.

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String get_node_name ( ) const

Gets the name of the current element node. This will raise an error if the current node type is neither NODE_ELEMENT nor NODE_ELEMENT_END.

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int get_node_offset ( ) const

Gets the byte offset of the current node since the beginning of the file or buffer.

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NodeType get_node_type ( )

Gets the type of the current node. Compare with NodeType constants.

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bool has_attribute ( String name ) const

Check whether the current element has a certain attribute.

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bool is_empty ( ) const

Check whether the current element is empty (this only works for completely empty tags, e.g. <element \>).

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Error open ( String file )

Opens an XML file for parsing. This returns an error code.

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Error open_buffer ( PoolByteArray buffer )

Opens an XML raw buffer for parsing. This returns an error code.

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Error read ( )

Reads the next node of the file. This returns an error code.

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Error seek ( int position )

Moves the buffer cursor to a certain offset (since the beginning) and read the next node there. This returns an error code.

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void skip_section ( )

Skips the current section. If the node contains other elements, they will be ignored and the cursor will go to the closing of the current element.