147 lines
4.0 KiB
Python
147 lines
4.0 KiB
Python
# Nemubot is a smart and modulable IM bot.
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# Copyright (C) 2012-2016 Mercier Pierre-Olivier
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from typing import Any, Optional, Mapping, Union
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from nemubot.datastore.nodes.serializable import Serializable
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class ParsingNode:
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"""Allow any kind of subtags, just keep parsed ones
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"""
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def __init__(self,
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tag: Optional[str] = None,
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**kwargs):
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self.tag = tag
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self.attrs = kwargs
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self.content = ""
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self.children = []
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def characters(self, content: str) -> None:
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self.content += content
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def addChild(self, name: str, child: Any) -> bool:
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self.children.append(child)
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return True
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def hasNode(self, nodename: str) -> bool:
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return self.getNode(nodename) is not None
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def getNode(self, nodename: str) -> Optional[Any]:
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for c in self.children:
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if c is not None and c.tag == nodename:
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return c
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return None
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def __getitem__(self, item: str) -> Any:
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return self.attrs[item]
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def __contains__(self, item: str) -> bool:
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return item in self.attrs
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def serialize_node(node: Union[Serializable, str, int, float, list, dict],
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**def_kwargs):
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"""Serialize any node or basic data to a ParsingNode instance"""
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if isinstance(node, Serializable):
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node = node.serialize()
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if isinstance(node, str):
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from nemubot.datastore.nodes.python import StringNode
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pn = StringNode(**def_kwargs)
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pn.value = node
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return pn
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elif isinstance(node, int):
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from nemubot.datastore.nodes.python import IntNode
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pn = IntNode(**def_kwargs)
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pn.value = node
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return pn
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elif isinstance(node, float):
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from nemubot.datastore.nodes.python import FloatNode
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pn = FloatNode(**def_kwargs)
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pn.value = node
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return pn
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elif isinstance(node, list):
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from nemubot.datastore.nodes.basic import ListNode
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pn = ListNode(**def_kwargs)
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pn.items = node
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return pn.serialize()
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elif isinstance(node, dict):
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from nemubot.datastore.nodes.basic import DictNode
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pn = DictNode(**def_kwargs)
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pn.items = node
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return pn.serialize()
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else:
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assert isinstance(node, ParsingNode)
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return node
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class GenericNode(ParsingNode):
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"""Consider all subtags as dictionnary
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"""
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def __init__(self,
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tag: str,
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**kwargs):
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super().__init__(tag, **kwargs)
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self._cur = None
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self._deep_cur = 0
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def startElement(self, name: str, attrs: Mapping[str, str]):
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if self._cur is None:
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self._cur = GenericNode(name, **attrs)
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self._deep_cur = 0
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else:
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self._deep_cur += 1
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self._cur.startElement(name, attrs)
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return True
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def characters(self, content: str):
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if self._cur is None:
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super().characters(content)
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else:
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self._cur.characters(content)
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def endElement(self, name: str):
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if name is None:
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return
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if self._deep_cur:
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self._deep_cur -= 1
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self._cur.endElement(name)
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else:
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self.children.append(self._cur)
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self._cur = None
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return True
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