textree 0.0.1

Create nodes as specified in the tree text.

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TexTree

Create nodes as specified in the tree text.

Features

• Compatible with python2,3
• Data can be assigned to nodes
• Convert between text and node objects

Requirement

• 2019-12-26
• Raspbierry Pi 4 Model B Rev 1.2
• Raspbian buster 10.0 2019-09-26 setup
• bash 5.0.3(1)-release
• Python 2.7.16
• Python 3.7.3

Installation

pip install textree

Usage

Foundations

Convert from text to node object.

import textree
tree_text = """
A
	A1
		A11
			A111
			A112
	A2
B
"""
tree = TexTree()
root = tree.to_node(tree_text)
print(root, root.Name)
for node in tree.Nodes:
    print(node.Line)
print(tree.to_text())

Reference

Convert between text and objects.

root = tree.to_node(tree_text)
       tree.to_text()

Reference and assignment.

node.Name
node.Parent
node.Children

node.Name = 'NewName'
node.Parent = Node('Parent')
node.Children.append(Node('Child'))

Move.

node.to_first()
node.to_last()
node.to_next()
node.to_prev()

Get.

Node.Path.select(root, 'A/A1/A11')
Node.Path.select(A, 'A1/A11')

Insertion / deletion.

node.insert_first(Node('new'))
node.insert_last(Node('new'))
node.insert_next(Node('new'))
node.insert_prev(Node('new'))

node.delete()

Update.

node = Node.Path.select(root, 'A/A1/A11')
node.Name = 'UpdateName'

There are many others. Refer to the code or API list for details.

Attribute of Node

Attributes can be assigned to the same line.

import textree
tree_text = """
A	attrA
	A1	attrA1
		A11	attrA11
			A111	attrA111
			A112	attrA112
	A2	attrA2
B	attrB
"""
tree = TexTree()
root = tree.to_node(tree_text)
print(root, root.Name)
for node in tree.Nodes:
    print(node.Name, node,Attr)

Attribute of RootNode

Attributes can be assigned to RootNode.

import textree
tree_text = """
<ROOT>	root_attr
A	attrA
	A1	attrA1
		A11	attrA11
			A111	attrA111
			A112	attrA112
	A2	attrA2
B	attrB
"""
tree = TexTree()
root = tree.to_node(tree_text)
print(root, root.Name, root.Attr)
for node in tree.Nodes:
    print(node.Name, node,Attr)

Deserialization of attributes

The user can embed the attribute analysis code freely. Of course you can also write code to serialize to text.

The following code gives the node my_name.

class MyNodeDeserializer(NodeDeserializer):
    def deserialize(self, ana, parent, parents=Node):
        node = Node(ana.Line, parent=parent)
        node.my_name = 'My name is ' + node.Name
        return node

tree = TexTree(node_deserializer=MyNodeDeserializer())
root = tree.to_node(tree_text)
for node in tree.Nodes:
    print(node.my_name)

class MyNodeAttributeSerializer(NodeAttributeSerializer):
    def serialize(self, attr): return 'my_name=' + attr

tree = TexTree(node_deserializer=MyNodeDeserializer(), node_serializer=NodeSerializer(MyNodeAttributeSerializer()))
root = tree.to_node(tree_text)
for node in tree.Nodes:
    print(node.my_name)
print(tree.to_text())

Note

• Alpha version. Checking installation

Author

　ytyaru

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License

This software is AGPLv3 licensed. (GNU Affero General Public License v3) agpl-3.0