67 lines
1.9 KiB
Python
67 lines
1.9 KiB
Python
from re import match
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from typing import List, Optional
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from scrapthechan.parser import Parser
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from scrapthechan.fileinfo import FileInfo
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__all__ = ["LainchanParser"]
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class LainchanParser(Parser):
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"""JSON parser for lainchan.org image board.
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JSON structure is identical to 4chan.org's, so this parser is just inherited
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from 4chan.org's parser and only needed things are redefined.
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"""
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__url_thread_json = "https://lainchan.org/{board}/res/{thread}.json"
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__url_file_link = "https://lainchan.org/{board}/src/{filename}"
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def __init__(self, board: str, thread: str,
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skip_posts: Optional[int] = None) -> None:
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posts = self._get_json(self.__url_thread_json.format(board=board, \
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thread=thread))['posts']
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super(LainchanParser, self).__init__(board, thread, posts, skip_posts)
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@property
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def imageboard(self) -> str:
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return "lainchan.org"
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@property
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def op(self) -> Optional[str]:
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op = ""
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if 'sub' in self._op_post:
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op = f"{self._op_post['sub']}\n"
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if 'com' in self._op_post:
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op += self._op_post['com']
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return op if not op == "" else None
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def _parse_post(self, post) -> List[FileInfo]:
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if not 'tim' in post: return None
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dlfname = f"{post['tim']}{post['ext']}"
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if "filename" in post:
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if match(r"^image\.\w+$", post['filename']) is None:
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filename = dlfname
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else:
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filename = f"{post['filename']}{post['ext']}"
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files = []
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files.append(FileInfo(filename, post['fsize'],
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self.__url_file_link.format(board=self.board, filename=dlfname),
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post['md5'], 'md5'))
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if "extra_files" in post:
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for f in post["extra_files"]:
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dlfname = f"{f['tim']}{f['ext']}"
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if "filename" in post:
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if match(r"^image\.\w+$", post['filename']) is None:
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filename = dlfname
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else:
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filename = f"{post['filename']}{post['ext']}"
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dlurl = self.__url_file_link.format(board=self.board, \
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filename=dlfname)
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files.append(FileInfo(filename, f['fsize'], \
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dlurl, f['md5'], 'md5'))
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return files
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