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Remove ancient db migration code.

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The last caller for this function was removed in 2012.
This gets rid of a python2-specific cStringIO import.
This commit is contained in:
Eli Schwartz 2019-03-14 16:15:39 -04:00
parent 86c1d17474
commit 9505fdf226
1 changed files with 1 additions and 55 deletions
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56
src/calibre/library/database2.py
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@ -6,11 +6,10 @@ __docformat__ = 'restructuredtext en'
'''
The database used to store ebook metadata
'''
import os, sys, shutil, cStringIO, glob, time, functools, traceback, re, \
import os, sys, shutil, glob, time, functools, traceback, re, \
json, uuid, hashlib, copy, types, numbers
from collections import defaultdict, namedtuple
import threading, random
from itertools import repeat
from calibre import prints, force_unicode
from calibre.ebooks.metadata import (title_sort, author_to_author_sort,
@ -3654,59 +3653,6 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
for i in iter(self):
yield i[x]
def migrate_old(self, db, progress):
from PyQt5.QtCore import QCoreApplication
header = u'<p>Migrating old database to ebook library in %s<br><center>'%self.library_path
progress.setValue(0)
progress.setLabelText(header)
QCoreApplication.processEvents()
db.conn.row_factory = lambda cursor, row: tuple(row)
db.conn.text_factory = lambda x: unicode_type(x, 'utf-8', 'replace')
books = db.conn.get('SELECT id, title, sort, timestamp, series_index, author_sort, isbn FROM books ORDER BY id ASC')
progress.setAutoReset(False)
progress.setRange(0, len(books))
for book in books:
self.conn.execute('INSERT INTO books(id, title, sort, timestamp, series_index, author_sort, isbn) VALUES(?, ?, ?, ?, ?, ?, ?, ?);', book)
tables = '''
authors ratings tags series books_tags_link
comments publishers
books_authors_link conversion_options
books_publishers_link
books_ratings_link
books_series_link feeds
'''.split()
for table in tables:
rows = db.conn.get('SELECT * FROM %s ORDER BY id ASC'%table)
for row in rows:
self.conn.execute('INSERT INTO %s VALUES(%s)'%(table, ','.join(repeat('?', len(row)))), row)
self.conn.commit()
self.refresh('timestamp', True)
for i, book in enumerate(books):
progress.setLabelText(header+_(u'Copying <b>%s</b>')%book[1])
id = book[0]
self.set_path(id, True)
formats = db.formats(id, index_is_id=True)
if not formats:
formats = []
else:
formats = formats.split(',')
for format in formats:
data = db.format(id, format, index_is_id=True)
if data:
self.add_format(id, format, cStringIO.StringIO(data), index_is_id=True)
cover = db.cover(id, index_is_id=True)
if cover:
self.set_cover(id, cover)
progress.setValue(i+1)
self.conn.commit()
progress.setLabelText(_('Compacting database'))
self.vacuum()
progress.reset()
return len(books)
def find_books_in_directory(self, dirpath, single_book_per_directory):
return find_books_in_directory(dirpath, single_book_per_directory)