Class reference

XMLParser

Inherits RefCounted

Provides a low-level interface for creating parsers for XML files.

Description

Provides a low-level interface for creating parsers for XML files. This class can serve as base to make custom XML parsers. To parse XML, you must open a file with the open() method or a buffer with the open_buffer() method. Then, the read() method must be called to parse the next nodes. Most of the methods take into consideration the currently parsed node. Here is an example of using XMLParser to parse an SVG file (which is based on XML), printing each element and its attributes as a dictionary:

		var parser = XMLParser.new()
		parser.open("path/to/file.svg")
		while parser.read() != ERR_FILE_EOF:
			if parser.get_node_type() == XMLParser.NODE_ELEMENT:
				var node_name = parser.get_node_name()
				var attributes_dict = {}
				for idx in range(parser.get_attribute_count()):
					attributes_dict[parser.get_attribute_name(idx)] = parser.get_attribute_value(idx)
				print("The ", node_name, " element has the following attributes: ", attributes_dict)

		var parser = new XmlParser();
		parser.Open("path/to/file.svg");
		while (parser.Read() != Error.FileEof)
		{
			if (parser.GetNodeType() == XmlParser.NodeType.Element)
			{
				var nodeName = parser.GetNodeName();
				var attributesDict = new Godot.Collections.Dictionary();
				for (int idx = 0; idx < parser.GetAttributeCount(); idx++)
				{
					attributesDict[parser.GetAttributeName(idx)] = parser.GetAttributeValue(idx);
				}
				GD.Print($"The {nodeName} element has the following attributes: {attributesDict}");
			}
		}

Methods

`int get_attribute_count() const`

Returns the number of attributes in the currently parsed element. Note: If this method is used while the currently parsed node is not NODE_ELEMENT or NODE_ELEMENT_END, this count will not be updated and will still reflect the last element.

`String get_attribute_name(int idx) const`

Returns the name of an attribute of the currently parsed element, specified by the idx index.

`String get_attribute_value(int idx) const`

Returns the value of an attribute of the currently parsed element, specified by the idx index.

`int get_current_line() const`

Returns the current line in the parsed file, counting from 0.

`String get_named_attribute_value(String name) const`

Returns the value of an attribute of the currently parsed element, specified by its name. This method will raise an error if the element has no such attribute.

`String get_named_attribute_value_safe(String name) const`

Returns the value of an attribute of the currently parsed element, specified by its name. This method will return an empty string if the element has no such attribute.

`String get_node_data() const`

Returns the contents of a text node. This method will raise an error if the current parsed node is of any other type.

`String get_node_name() const`

Returns the name of a node. This method will raise an error if the currently parsed node is a text node. Note: The content of a NODE_CDATA node and the comment string of a NODE_COMMENT node are also considered names.

`int get_node_offset() const`

Returns the byte offset of the currently parsed node since the beginning of the file or buffer. This is usually equivalent to the number of characters before the read position.

`int get_node_type()`

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

`bool has_attribute(String name) const`

Returns true if the currently parsed element has an attribute with the name.

`bool is_empty() const`

Returns true if the currently parsed element is empty, e.g. <element />.

`int open(String file)`

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

`int open_buffer(PackedByteArray buffer)`

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

`int read()`

Parses the next node in the file. This method returns an error code.

`int seek(int position)`

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

`void skip_section()`

Skips the current section. If the currently parsed node contains more inner nodes, they will be ignored and the cursor will go to the closing of the current element.

Constants

`NODE_NONE = 0`

Enum: NodeType

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

`NODE_ELEMENT = 1`

Enum: NodeType

An element node type, also known as a tag, e.g. <title>.

`NODE_ELEMENT_END = 2`

Enum: NodeType

An end of element node type, e.g. </title>.

`NODE_TEXT = 3`

Enum: NodeType

A text node type, i.e. text that is not inside an element. This includes whitespace.

`NODE_COMMENT = 4`

Enum: NodeType

A comment node type, e.g. .

`NODE_CDATA = 5`

Enum: NodeType

A node type for CDATA (Character Data) sections, e.g. <![CDATA[CDATA section]]>.

`NODE_UNKNOWN = 6`

Enum: NodeType

An unknown node type.

Source revision 5592dc3a7a61