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from dataclasses import dataclass
from io import BufferedReader
from pathlib import Path
from typing import List
import lxml.etree
from datetime import datetime
class MediaWikiRevision:
id: int
parentid: int
timestamp: str
contributor: str
comment: str
model: str
format: str
text: str
def __init__(
self, id, parentid, timestamp, contributor, comment, model, format, text
):
self.id = id
self.parentid = parentid
self.timestamp = datetime.fromisoformat(timestamp.replace("Z", "+00:00"))
self.contributor = contributor
self.comment = comment
self.model = model
self.format = format
self.text = text
@dataclass
class MediaWikiPage:
title: str
id: int
revisions: List[MediaWikiRevision]
text: str
class MediaWikiDump:
sitename: str
baseurl: str
engine: str
pages: List[MediaWikiPage]
def __init__(self, source: Path | str | BufferedReader) -> None:
if not hasattr(source, "read"):
source = open(source, "rb")
root = lxml.etree.parse(source).getroot()
ns = {"mw": "http://www.mediawiki.org/xml/export-0.11/"}
siteinfo = root.find("./mw:siteinfo", ns)
self.sitename = siteinfo.find("./mw:sitename", ns).text
self.baseurl = siteinfo.find("./mw:base", ns).text
self.engine = siteinfo.find("./mw:generator", ns).text
self.pages = []
ids = []
for page in root.findall("./mw:page", ns):
title = page.find("./mw:title", ns).text
id = int(page.find("./mw:id", ns).text)
if id in ids:
continue
revisions: List[MediaWikiRevision] = []
for revision in page.findall("./mw:revision", ns):
revid = int(revision.find("./mw:id", ns).text)
parentid = int(revision.find("./mw:parentid", ns).text)
timestamp = revision.find("./mw:timestamp", ns).text
contributor = revision.find("./mw:contributor", ns).text
comment = revision.find("./mw:comment", ns)
comment = comment.text if comment is not None else ""
model = revision.find("./mw:model", ns).text
format = revision.find("./mw:format", ns).text
text = revision.find("./mw:text", ns).text
text = text if text is not None else ""
revisions.append(
MediaWikiRevision(
revid,
parentid,
timestamp,
contributor,
comment,
model,
format,
text,
)
)
revisions.sort(key=lambda r: r.timestamp)
revisions.reverse()
text = revisions[0].text
ids.append(id)
self.pages.append(MediaWikiPage(title, id, revisions, text))
pass
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