godot-docs/classes/class_xmlparser.rst

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.. _class_XMLParser:

XMLParser
=========

**Inherits:** :ref:`Reference<class_Reference>` **<** :ref:`Object<class_Object>`

Low-level class for creating parsers for `XML <https://en.wikipedia.org/wiki/XML>`__ files.

.. rst-class:: classref-introduction-group

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.

.. rst-class:: classref-reftable-group

Methods
-------

.. table::
   :widths: auto

   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                    | :ref:`get_attribute_count<class_XMLParser_method_get_attribute_count>` **(** **)** |const|                                                        |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`              | :ref:`get_attribute_name<class_XMLParser_method_get_attribute_name>` **(** :ref:`int<class_int>` idx **)** |const|                                |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`              | :ref:`get_attribute_value<class_XMLParser_method_get_attribute_value>` **(** :ref:`int<class_int>` idx **)** |const|                              |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                    | :ref:`get_current_line<class_XMLParser_method_get_current_line>` **(** **)** |const|                                                              |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`              | :ref:`get_named_attribute_value<class_XMLParser_method_get_named_attribute_value>` **(** :ref:`String<class_String>` name **)** |const|           |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`              | :ref:`get_named_attribute_value_safe<class_XMLParser_method_get_named_attribute_value_safe>` **(** :ref:`String<class_String>` name **)** |const| |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`              | :ref:`get_node_data<class_XMLParser_method_get_node_data>` **(** **)** |const|                                                                    |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`              | :ref:`get_node_name<class_XMLParser_method_get_node_name>` **(** **)** |const|                                                                    |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                    | :ref:`get_node_offset<class_XMLParser_method_get_node_offset>` **(** **)** |const|                                                                |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`NodeType<enum_XMLParser_NodeType>` | :ref:`get_node_type<class_XMLParser_method_get_node_type>` **(** **)**                                                                            |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                  | :ref:`has_attribute<class_XMLParser_method_has_attribute>` **(** :ref:`String<class_String>` name **)** |const|                                   |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                  | :ref:`is_empty<class_XMLParser_method_is_empty>` **(** **)** |const|                                                                              |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Error<enum_@GlobalScope_Error>`    | :ref:`open<class_XMLParser_method_open>` **(** :ref:`String<class_String>` file **)**                                                             |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Error<enum_@GlobalScope_Error>`    | :ref:`open_buffer<class_XMLParser_method_open_buffer>` **(** :ref:`PoolByteArray<class_PoolByteArray>` buffer **)**                               |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Error<enum_@GlobalScope_Error>`    | :ref:`read<class_XMLParser_method_read>` **(** **)**                                                                                              |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Error<enum_@GlobalScope_Error>`    | :ref:`seek<class_XMLParser_method_seek>` **(** :ref:`int<class_int>` position **)**                                                               |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                     | :ref:`skip_section<class_XMLParser_method_skip_section>` **(** **)**                                                                              |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+

.. rst-class:: classref-section-separator

----

.. rst-class:: classref-descriptions-group

Enumerations
------------

.. _enum_XMLParser_NodeType:

.. rst-class:: classref-enumeration

enum **NodeType**:

.. _class_XMLParser_constant_NODE_NONE:

.. rst-class:: classref-enumeration-constant

:ref:`NodeType<enum_XMLParser_NodeType>` **NODE_NONE** = ``0``

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

.. _class_XMLParser_constant_NODE_ELEMENT:

.. rst-class:: classref-enumeration-constant

:ref:`NodeType<enum_XMLParser_NodeType>` **NODE_ELEMENT** = ``1``

Element (tag).

.. _class_XMLParser_constant_NODE_ELEMENT_END:

.. rst-class:: classref-enumeration-constant

:ref:`NodeType<enum_XMLParser_NodeType>` **NODE_ELEMENT_END** = ``2``

End of element.

.. _class_XMLParser_constant_NODE_TEXT:

.. rst-class:: classref-enumeration-constant

:ref:`NodeType<enum_XMLParser_NodeType>` **NODE_TEXT** = ``3``

Text node.

.. _class_XMLParser_constant_NODE_COMMENT:

.. rst-class:: classref-enumeration-constant

:ref:`NodeType<enum_XMLParser_NodeType>` **NODE_COMMENT** = ``4``

Comment node.

.. _class_XMLParser_constant_NODE_CDATA:

.. rst-class:: classref-enumeration-constant

:ref:`NodeType<enum_XMLParser_NodeType>` **NODE_CDATA** = ``5``

CDATA content.

.. _class_XMLParser_constant_NODE_UNKNOWN:

.. rst-class:: classref-enumeration-constant

:ref:`NodeType<enum_XMLParser_NodeType>` **NODE_UNKNOWN** = ``6``

Unknown node.

.. rst-class:: classref-section-separator

----

.. rst-class:: classref-descriptions-group

Method Descriptions
-------------------

.. _class_XMLParser_method_get_attribute_count:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_attribute_count** **(** **)** |const|

Gets the amount of attributes in the current element.

.. rst-class:: classref-item-separator

----

.. _class_XMLParser_method_get_attribute_name:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_attribute_name** **(** :ref:`int<class_int>` idx **)** |const|

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

.. rst-class:: classref-item-separator

----

.. _class_XMLParser_method_get_attribute_value:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_attribute_value** **(** :ref:`int<class_int>` idx **)** |const|

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

.. rst-class:: classref-item-separator

----

.. _class_XMLParser_method_get_current_line:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_current_line** **(** **)** |const|

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

.. rst-class:: classref-item-separator

----

.. _class_XMLParser_method_get_named_attribute_value:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_named_attribute_value** **(** :ref:`String<class_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.

.. rst-class:: classref-item-separator

----

.. _class_XMLParser_method_get_named_attribute_value_safe:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_named_attribute_value_safe** **(** :ref:`String<class_String>` name **)** |const|

Gets the value of a certain attribute of the current element by name. This will return an empty :ref:`String<class_String>` if the attribute is not found.

.. rst-class:: classref-item-separator

----

.. _class_XMLParser_method_get_node_data:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_node_data** **(** **)** |const|

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

.. rst-class:: classref-item-separator

----

.. _class_XMLParser_method_get_node_name:

.. rst-class:: classref-method

:ref:`String<class_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 :ref:`NODE_ELEMENT<class_XMLParser_constant_NODE_ELEMENT>` nor :ref:`NODE_ELEMENT_END<class_XMLParser_constant_NODE_ELEMENT_END>`.

.. rst-class:: classref-item-separator

----

.. _class_XMLParser_method_get_node_offset:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_node_offset** **(** **)** |const|

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

.. rst-class:: classref-item-separator

----

.. _class_XMLParser_method_get_node_type:

.. rst-class:: classref-method

:ref:`NodeType<enum_XMLParser_NodeType>` **get_node_type** **(** **)**

Gets the type of the current node. Compare with :ref:`NodeType<enum_XMLParser_NodeType>` constants.

.. rst-class:: classref-item-separator

----

.. _class_XMLParser_method_has_attribute:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **has_attribute** **(** :ref:`String<class_String>` name **)** |const|

Check whether the current element has a certain attribute.

.. rst-class:: classref-item-separator

----

.. _class_XMLParser_method_is_empty:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_empty** **(** **)** |const|

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

.. rst-class:: classref-item-separator

----

.. _class_XMLParser_method_open:

.. rst-class:: classref-method

:ref:`Error<enum_@GlobalScope_Error>` **open** **(** :ref:`String<class_String>` file **)**

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

.. rst-class:: classref-item-separator

----

.. _class_XMLParser_method_open_buffer:

.. rst-class:: classref-method

:ref:`Error<enum_@GlobalScope_Error>` **open_buffer** **(** :ref:`PoolByteArray<class_PoolByteArray>` buffer **)**

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

.. rst-class:: classref-item-separator

----

.. _class_XMLParser_method_read:

.. rst-class:: classref-method

:ref:`Error<enum_@GlobalScope_Error>` **read** **(** **)**

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

.. rst-class:: classref-item-separator

----

.. _class_XMLParser_method_seek:

.. rst-class:: classref-method

:ref:`Error<enum_@GlobalScope_Error>` **seek** **(** :ref:`int<class_int>` position **)**

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

.. rst-class:: classref-item-separator

----

.. _class_XMLParser_method_skip_section:

.. rst-class:: classref-method

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.

.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`