1 files changed, 0 insertions, 124 deletions
diff --git a/backend/tolData/enwiki/genDescData.py b/backend/tolData/enwiki/genDescData.py
deleted file mode 100755
index 1698f5c..0000000
--- a/backend/tolData/enwiki/genDescData.py
+++ /dev/null
@@ -1,124 +0,0 @@
-#!/usr/bin/python3
-
-import sys, os, re
-import bz2
-import html, mwxml, mwparserfromhell
-import sqlite3
-
-import argparse
-parser = argparse.ArgumentParser(description="""
-Reads through the wiki dump, and attempts to parse short-descriptions,
-and add them to a database
-""", formatter_class=argparse.RawDescriptionHelpFormatter)
-parser.parse_args()
-
-dumpFile = 'enwiki-20220501-pages-articles-multistream.xml.bz2' # Had about 22e6 pages
-enwikiDb = 'descData.db'
-# In testing, this script took over 10 hours to run, and generated about 5GB
-
-descLineRegex = re.compile('^ *[A-Z\'"]')
-embeddedHtmlRegex = re.compile(r'<[^<]+/>|<!--[^<]+-->|<[^</]+>([^<]*|[^<]*<[^<]+>[^<]*)</[^<]+>|<[^<]+$')
-	# Recognises a self-closing HTML tag, a tag with 0 children, tag with 1 child with 0 children, or unclosed tag
-convertTemplateRegex = re.compile(r'{{convert\|(\d[^|]*)\|(?:(to|-)\|(\d[^|]*)\|)?([a-z][^|}]*)[^}]*}}')
-def convertTemplateReplace(match):
-	if match.group(2) is None:
-		return f'{match.group(1)} {match.group(4)}'
-	else:
-		return f'{match.group(1)} {match.group(2)} {match.group(3)} {match.group(4)}'
-parensGroupRegex = re.compile(r' \([^()]*\)')
-leftoverBraceRegex = re.compile(r'(?:{\||{{).*')
-
-def parseDesc(text: str) -> str | None:
-	# Find first matching line outside {{...}}, [[...]], and block-html-comment constructs,
-		# and then accumulate lines until a blank one.
-	# Some cases not accounted for include: disambiguation pages, abstracts with sentences split-across-lines, 
-		# nested embedded html, 'content significant' embedded-html, markup not removable with mwparsefromhell, 
-	lines: list[str] = []
-	openBraceCount = 0
-	openBracketCount = 0
-	inComment = False
-	skip = False
-	for line in text.splitlines():
-		line = line.strip()
-		if not lines:
-			if line:
-				if openBraceCount > 0 or line[0] == '{':
-					openBraceCount += line.count('{')
-					openBraceCount -= line.count('}')
-					skip = True
-				if openBracketCount > 0 or line[0] == '[':
-					openBracketCount += line.count('[')
-					openBracketCount -= line.count(']')
-					skip = True
-				if inComment or line.find('<!--') != -1:
-					if line.find('-->') != -1:
-						if inComment:
-							inComment = False
-							skip = True
-					else:
-						inComment = True
-						skip = True
-				if skip:
-					skip = False
-					continue
-				if line[-1] == ':': # Seems to help avoid disambiguation pages
-					return None
-				if descLineRegex.match(line) is not None:
-					lines.append(line)
-		else:
-			if not line:
-				return removeMarkup(' '.join(lines))
-			lines.append(line)
-	if lines:
-		return removeMarkup(' '.join(lines))
-	return None
-def removeMarkup(content: str) -> str:
-	content = embeddedHtmlRegex.sub('', content)
-	content = convertTemplateRegex.sub(convertTemplateReplace, content)
-	content = mwparserfromhell.parse(content).strip_code() # Remove wikitext markup
-	content = parensGroupRegex.sub('', content)
-	content = leftoverBraceRegex.sub('', content)
-	return content
-def convertTitle(title: str) -> str:
-	return html.unescape(title).replace('_', ' ')
-
-print('Creating database')
-if os.path.exists(enwikiDb):
-	raise Exception(f'ERROR: Existing {enwikiDb}')
-dbCon = sqlite3.connect(enwikiDb)
-dbCur = dbCon.cursor()
-dbCur.execute('CREATE TABLE pages (id INT PRIMARY KEY, title TEXT UNIQUE)')
-dbCur.execute('CREATE INDEX pages_title_idx ON pages(title COLLATE NOCASE)')
-dbCur.execute('CREATE TABLE redirects (id INT PRIMARY KEY, target TEXT)')
-dbCur.execute('CREATE INDEX redirects_idx ON redirects(target)')
-dbCur.execute('CREATE TABLE descs (id INT PRIMARY KEY, desc TEXT)')
-
-print('Iterating through dump file')
-with bz2.open(dumpFile, mode='rt') as file:
-	dump = mwxml.Dump.from_file(file)
-	pageNum = 0
-	for page in dump:
-		pageNum += 1
-		if pageNum % 1e4 == 0:
-			print(f'At page {pageNum}')
-		if pageNum > 3e4:
-			break
-		# Parse page
-		if page.namespace == 0:
-			try:
-				dbCur.execute('INSERT INTO pages VALUES (?, ?)', (page.id, convertTitle(page.title)))
-			except sqlite3.IntegrityError as e:
-				# Accounts for certain pages that have the same title
-				print(f'Failed to add page with title "{page.title}": {e}', file=sys.stderr)
-				continue
-			if page.redirect is not None:
-				dbCur.execute('INSERT INTO redirects VALUES (?, ?)', (page.id, convertTitle(page.redirect)))
-			else:
-				revision = next(page)
-				desc = parseDesc(revision.text)
-				if desc is not None:
-					dbCur.execute('INSERT INTO descs VALUES (?, ?)', (page.id, desc))
-
-print('Closing database')
-dbCon.commit()
-dbCon.close()