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3d370f675b
the initial plan was to zero the creation time and leave the cards/facts there until we have a chance to garbage collect them on a schema change, but such an approach won't work with deck subscriptions
791 lines
25 KiB
Python
791 lines
25 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright: Damien Elmes <anki@ichi2.net>
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# License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
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import time, os, random, re, stat, simplejson, datetime, copy, shutil
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from anki.lang import _, ngettext
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from anki.utils import parseTags, ids2str, hexifyID, \
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checksum, fieldChecksum, addTags, delTags, stripHTML, intTime, \
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splitFields
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from anki.hooks import runHook, runFilter
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from anki.sched import Scheduler
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from anki.media import MediaRegistry
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from anki.consts import *
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from anki.errors import AnkiError
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import anki.latex # sets up hook
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import anki.cards, anki.facts, anki.models, anki.template, anki.cram, \
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anki.groups, anki.find
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# Settings related to queue building. These may be loaded without the rest of
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# the config to check due counts faster on mobile clients.
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defaultQconf = {
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'groups': [],
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'newPerDay': 20,
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'newToday': [0, 0], # currentDay, count
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'newTodayOrder': NEW_TODAY_ORD,
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'newOrder': 1,
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'newSpread': NEW_CARDS_DISTRIBUTE,
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'revOrder': REV_CARDS_RANDOM,
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'collapseTime': 1200,
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'repLim': 0,
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'timeLim': 600,
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}
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# other options
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defaultConf = {
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'currentModelId': 1,
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'currentGroupId': 1,
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'nextFid': 1,
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'nextCid': 1,
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'nextGid': 2,
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'nextGcid': 2,
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'mediaURL': "",
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'fontFamilies': [
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[u'ＭＳ 明朝',u'ヒラギノ明朝 Pro W3',u'Kochi Mincho', u'東風明朝']
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],
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'sortType': "factFld",
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'sortBackwards': False,
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}
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# this is initialized by storage.Deck
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class _Deck(object):
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def __init__(self, db):
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self.db = db
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self.path = db._path
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self._lastSave = time.time()
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self.clearUndo()
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self.load()
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if not self.crt:
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d = datetime.datetime.today()
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d -= datetime.timedelta(hours=4)
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d = datetime.datetime(d.year, d.month, d.day)
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d += datetime.timedelta(hours=4)
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self.crt = int(time.mktime(d.timetuple()))
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self.modelCache = {}
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self.undoEnabled = False
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self.sessionStartReps = 0
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self.sessionStartTime = 0
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self.lastSessionStart = 0
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self._stdSched = Scheduler(self)
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self.sched = self._stdSched
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self.media = MediaRegistry(self)
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# check for improper shutdown
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self.cleanup()
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def name(self):
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n = os.path.splitext(os.path.basename(self.path))[0]
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return n
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# DB-related
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##########################################################################
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def load(self):
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(self.crt,
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self.mod,
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self.scm,
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self.dty,
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self.syncName,
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self.lastSync,
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self.qconf,
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self.conf,
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self.data) = self.db.first("""
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select crt, mod, scm, dty, syncName, lastSync,
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qconf, conf, data from deck""")
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self.qconf = simplejson.loads(self.qconf)
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self.conf = simplejson.loads(self.conf)
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self.data = simplejson.loads(self.data)
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def flush(self):
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"Flush state to DB, updating mod time."
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self.mod = intTime()
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self.db.execute(
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"""update deck set
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crt=?, mod=?, scm=?, dty=?, syncName=?, lastSync=?,
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qconf=?, conf=?, data=?""",
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self.crt, self.mod, self.scm, self.dty,
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self.syncName, self.lastSync,
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simplejson.dumps(self.qconf),
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simplejson.dumps(self.conf), simplejson.dumps(self.data))
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def save(self, name=None):
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"Flush, commit DB, and take out another write lock."
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self.flush()
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self.db.commit()
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self.lock()
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self._markOp(name)
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self._lastSave = time.time()
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def autosave(self):
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"Save if 5 minutes has passed since last save."
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if time.time() - self._lastSave > 300:
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self.save()
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def lock(self):
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self.db.execute("update deck set mod=mod")
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def close(self, save=True):
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"Disconnect from DB."
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self.cleanup()
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if self.db:
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if save:
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self.save()
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else:
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self.rollback()
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self.db.close()
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self.db = None
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def reopen(self):
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"Reconnect to DB (after changing threads, etc). Doesn't reload."
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import anki.db
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if not self.db:
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self.db = anki.db.DB(self.path)
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def rollback(self):
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self.db.rollback()
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self.load()
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self.lock()
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def modSchema(self, check=True):
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"Mark schema modified. Call this first so user can abort if necessary."
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if not self.schemaChanged():
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if check and not runFilter("modSchema", True):
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raise AnkiError("abortSchemaMod")
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self.scm = intTime()
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def schemaChanged(self):
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"True if schema changed since last sync, or syncing off."
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return not self.syncingEnabled() or self.scm > self.lastSync
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def setDirty(self):
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self.dty = True
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def cleanup(self):
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if self.dty:
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self.sched.onClose()
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self.dty = False
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def rename(self, path):
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# close our DB connection
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self.close()
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# move to new path
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shutil.copy2(self.path, path)
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os.unlink(self.path)
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# record old dir
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olddir = self.media.dir()
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# reconnect & move media
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self.path = path
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self.reopen()
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self.media.move(olddir)
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# Object creation helpers
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##########################################################################
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def getCard(self, id):
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return anki.cards.Card(self, id)
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def getFact(self, id):
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return anki.facts.Fact(self, id=id)
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def getModel(self, mid, cache=True):
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"Memoizes; call .reset() to reset cache."
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if cache and mid in self.modelCache:
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return self.modelCache[mid]
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m = anki.models.Model(self, mid)
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if cache:
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self.modelCache[mid] = m
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return m
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# Utils
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##########################################################################
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def nextID(self, type):
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type = "next"+type.capitalize()
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id = self.conf.get(type, 1)
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self.conf[type] = id+1
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return id
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def reset(self):
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"Rebuild the queue and reload data after DB modified."
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self.modelCache = {}
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self.sched.reset()
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# Deletion logging
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##########################################################################
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def _logDels(self, ids, type):
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self.db.executemany("insert into graves values (%d, ?, %d)" % (
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intTime(), type), ([x] for x in ids))
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# Facts
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##########################################################################
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def factCount(self):
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return self.db.scalar("select count() from facts")
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def newFact(self):
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"Return a new fact with the current model."
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return anki.facts.Fact(self, self.currentModel())
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def addFact(self, fact):
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"Add a fact to the deck. Return number of new cards."
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# check we have card models available
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cms = self.findTemplates(fact)
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if not cms:
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return 0
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# flush the fact
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fact.id = self.nextID("fid")
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fact.flush()
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# randomize?
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if self.randomNew():
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due = random.randrange(1, fact.id)
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else:
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due = fact.id
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# add cards
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ncards = 0
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for template in cms:
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self._newCard(fact, template, due)
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ncards += 1
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return ncards
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def _delFacts(self, ids):
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"Bulk delete facts by ID. Don't call this directly."
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if not ids:
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return
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strids = ids2str(ids)
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self.db.execute("delete from facts where id in %s" % strids)
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self.db.execute("delete from fsums where fid in %s" % strids)
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self._logDels(ids, DEL_FACT)
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# Card creation
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##########################################################################
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def findTemplates(self, fact, checkActive=True):
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"Return (active), non-empty templates."
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ok = []
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model = fact.model()
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for template in model.templates:
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if template['actv'] or not checkActive:
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# [cid, fid, mid, gid, ord, tags, flds]
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data = [1, 1, model.id, 1, template['ord'],
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"", fact.joinedFields()]
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now = self._renderQA(model, "", data)
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data[6] = "\x1f".join([""]*len(fact.fields))
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empty = self._renderQA(model, "", data)
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if now['q'] == empty['q']:
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continue
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if not template['emptyAns']:
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if now['a'] == empty['a']:
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continue
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ok.append(template)
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return ok
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def genCards(self, fact, templates):
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"Generate cards for templates if cards not empty. Return cards."
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cards = []
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# if random mode, determine insertion point
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if self.randomNew():
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# if this fact has existing new cards, use their due time
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due = self.db.scalar(
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"select due from cards where fid = ? and queue = 0", fact.id)
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due = due or random.randrange(1, self.conf['nextFid'])
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else:
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due = fact.id
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for template in self.findTemplates(fact, checkActive=False):
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if template not in templates:
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continue
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# if it doesn't already exist
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if not self.db.scalar(
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"select 1 from cards where fid = ? and ord = ?",
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fact.id, template['ord']):
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# create
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cards.append(self._newCard(fact, template, due))
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return cards
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# type 0 - when previewing in add dialog, only non-empty & active
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# type 1 - when previewing edit, only existing
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# type 2 - when previewing in models dialog, all
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def previewCards(self, fact, type=0):
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"Return uncommited cards for preview."
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if type == 0:
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cms = self.findTemplates(fact, checkActive=True)
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elif type == 1:
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cms = [c.template() for c in fact.cards()]
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else:
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cms = fact.model().templates
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if not cms:
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return []
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cards = []
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for template in cms:
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cards.append(self._newCard(fact, template, 1, flush=False))
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return cards
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def _newCard(self, fact, template, due, flush=True):
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"Create a new card."
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card = anki.cards.Card(self)
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card.id = self.nextID("cid")
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card.fid = fact.id
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card.ord = template['ord']
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card.gid = self.defaultGroup(template['gid'] or fact.gid)
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card.due = due
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if flush:
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card.flush()
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return card
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def randomNew(self):
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return self.qconf['newOrder'] == NEW_CARDS_RANDOM
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# Cards
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##########################################################################
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def cardCount(self):
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return self.db.scalar("select count() from cards")
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def delCards(self, ids):
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"Bulk delete cards by ID."
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if not ids:
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return
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sids = ids2str(ids)
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fids = self.db.list("select fid from cards where id in "+sids)
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# remove cards
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self.db.execute("delete from cards where id in "+sids)
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self.db.execute("delete from revlog where cid in "+sids)
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self._logDels(ids, DEL_CARD)
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# then facts
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fids = self.db.list("""
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select id from facts where id in %s and id not in (select fid from cards)""" %
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ids2str(fids))
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self._delFacts(fids)
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# Models
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##########################################################################
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def currentModel(self):
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return self.getModel(self.conf['currentModelId'])
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def models(self):
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"Return a dict of mid -> model."
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mods = {}
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for m in [self.getModel(id) for id in self.db.list(
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"select id from models")]:
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mods[m.id] = m
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return mods
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def addModel(self, model):
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model.flush()
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self.conf['currentModelId'] = model.id
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def delModel(self, mid):
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"Delete MODEL, and all its cards/facts."
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# do a direct delete
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self.modSchema()
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# delete facts/cards
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self.delCards(self.db.list("""
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select id from cards where fid in (select id from facts where mid = ?)""",
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mid))
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# then the model
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self.db.execute("delete from models where id = ?", mid)
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# GUI should ensure last model is not deleted
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if self.conf['currentModelId'] == mid:
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self.conf['currentModelId'] = self.db.scalar(
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"select id from models limit 1")
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def allCSS(self):
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return "\n".join(self.db.list("select css from models"))
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# Field checksums and sorting fields
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##########################################################################
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def _fieldData(self, sfids):
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return self.db.execute(
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"select id, mid, flds from facts where id in "+sfids)
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def updateFieldCache(self, fids, csum=True):
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"Update field checksums and sort cache, after find&replace, etc."
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sfids = ids2str(fids)
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mods = self.models()
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r = []
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r2 = []
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for (fid, mid, flds) in self._fieldData(sfids):
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fields = splitFields(flds)
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model = mods[mid]
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if csum:
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for f in model.fields:
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if f['uniq'] and fields[f['ord']]:
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r.append((fid, mid, fieldChecksum(fields[f['ord']])))
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r2.append((stripHTML(fields[model.sortIdx()]), fid))
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if csum:
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self.db.execute("delete from fsums where fid in "+sfids)
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self.db.executemany("insert into fsums values (?,?,?)", r)
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self.db.executemany("update facts set sfld = ? where id = ?", r2)
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# Q/A generation
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##########################################################################
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def renderQA(self, ids=None, type="card"):
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# gather metadata
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if type == "card":
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where = "and c.id in " + ids2str(ids)
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elif type == "fact":
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where = "and f.id in " + ids2str(ids)
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elif type == "model":
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where = "and m.id in " + ids2str(ids)
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elif type == "all":
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where = ""
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else:
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raise Exception()
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mods = self.models()
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groups = dict(self.db.all("select id, name from groups"))
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return [self._renderQA(mods[row[2]], groups[row[3]], row)
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for row in self._qaData(where)]
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# fixme: don't need gid or data
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def _renderQA(self, model, gname, data):
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"Returns hash of id, question, answer."
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# data is [cid, fid, mid, gid, ord, tags, flds]
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# unpack fields and create dict
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flist = splitFields(data[6])
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fields = {}
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for (name, (idx, conf)) in model.fieldMap().items():
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fields[name] = flist[idx]
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if fields[name]:
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fields[name] = '<span class="fm%s-%s">%s</span>' % (
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hexifyID(data[2]), hexifyID(idx), fields[name])
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else:
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fields[name] = ""
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fields['Tags'] = data[5]
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fields['Model'] = model.name
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fields['Group'] = gname
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template = model.templates[data[4]]
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fields['Template'] = template['name']
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# render q & a
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d = dict(id=data[0])
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for (type, format) in (("q", template['qfmt']), ("a", template['afmt'])):
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if type == "q":
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format = format.replace("cloze:", "cq:")
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else:
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if model.conf['clozectx']:
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name = "cactx:"
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else:
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name = "ca:"
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format = format.replace("cloze:", name)
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fields = runFilter("mungeFields", fields, model, gname, data, self)
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html = anki.template.render(format, fields)
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d[type] = runFilter(
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"mungeQA", html, type, fields, model, gname, data, self)
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return d
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def _qaData(self, where=""):
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"Return [cid, fid, mid, gid, ord, tags, flds] db query"
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return self.db.execute("""
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select c.id, f.id, f.mid, c.gid, c.ord, f.tags, f.flds
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from cards c, facts f
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where c.fid == f.id
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%s""" % where)
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# Tags
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##########################################################################
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def tagList(self):
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return self.db.list("select name from tags order by name")
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def updateFactTags(self, fids=None):
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"Add any missing tags to the tags list."
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if fids:
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lim = " where id in " + ids2str(fids)
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else:
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lim = ""
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self.registerTags(set(parseTags(
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" ".join(self.db.list("select distinct tags from facts"+lim)))))
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def registerTags(self, tags):
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r = []
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for t in tags:
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r.append({'t': t})
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self.db.executemany("""
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insert or ignore into tags (mod, name) values (%d, :t)""" % intTime(),
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r)
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def addTags(self, ids, tags, add=True):
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"Add tags in bulk. TAGS is space-separated."
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newTags = parseTags(tags)
|
||
if not newTags:
|
||
return
|
||
# cache tag names
|
||
self.registerTags(newTags)
|
||
# find facts missing the tags
|
||
if add:
|
||
l = "tags not "
|
||
fn = addTags
|
||
else:
|
||
l = "tags "
|
||
fn = delTags
|
||
lim = " or ".join(
|
||
[l+"like :_%d" % c for c, t in enumerate(newTags)])
|
||
res = self.db.all(
|
||
"select id, tags from facts where id in %s and %s" % (
|
||
ids2str(ids), lim),
|
||
**dict([("_%d" % x, '%% %s %%' % y) for x, y in enumerate(newTags)]))
|
||
# update tags
|
||
fids = []
|
||
def fix(row):
|
||
fids.append(row[0])
|
||
return {'id': row[0], 't': fn(tags, row[1]), 'n':intTime()}
|
||
self.db.executemany("""
|
||
update facts set tags = :t, mod = :n where id = :id""", [fix(row) for row in res])
|
||
# update q/a cache
|
||
self.registerTags(parseTags(tags))
|
||
|
||
def delTags(self, ids, tags):
|
||
self.addTags(ids, tags, False)
|
||
|
||
# Groups
|
||
##########################################################################
|
||
|
||
def groups(self):
|
||
"A list of all group names."
|
||
return self.db.list("select name from groups order by name")
|
||
|
||
def groupName(self, id):
|
||
return self.db.scalar("select name from groups where id = ?", id)
|
||
|
||
def groupId(self, name):
|
||
"Return the id for NAME, creating if necessary."
|
||
id = self.db.scalar("select id from groups where name = ?", name)
|
||
if not id:
|
||
id = self.db.execute(
|
||
"insert into groups values (?,?,?,?, ?)",
|
||
self.nextID("gid"), intTime(), name, 1,
|
||
simplejson.dumps(anki.groups.defaultData)).lastrowid
|
||
return id
|
||
|
||
def defaultGroup(self, id):
|
||
if id == 1:
|
||
return 1
|
||
return self.db.scalar("select id from groups where id = ?", id) or 1
|
||
|
||
def delGroup(self, gid):
|
||
self.modSchema()
|
||
self.db.execute("update cards set gid = 1 where gid = ?", gid)
|
||
self.db.execute("update facts set gid = 1 where gid = ?", gid)
|
||
self.db.execute("delete from groups where id = ?", gid)
|
||
|
||
def setGroup(self, cids, gid):
|
||
self.db.execute(
|
||
"update cards set gid = ? where id in "+ids2str(cids), gid)
|
||
|
||
# Group configuration
|
||
##########################################################################
|
||
|
||
def groupConfs(self):
|
||
"Return [name, id]."
|
||
return self.db.all("select name, id from gconf order by name")
|
||
|
||
def groupConf(self, gcid):
|
||
return simplejson.loads(
|
||
self.db.scalar(
|
||
"select conf from gconf where id = ?", gcid))
|
||
|
||
# Tag-based selective study
|
||
##########################################################################
|
||
|
||
def selTagFids(self, yes, no):
|
||
l = []
|
||
# find facts that match yes
|
||
lim = ""
|
||
args = []
|
||
query = "select id from facts"
|
||
if not yes and not no:
|
||
pass
|
||
else:
|
||
if yes:
|
||
lim += " or ".join(["tags like ?" for t in yes])
|
||
args += ['%% %s %%' % t for t in yes]
|
||
if no:
|
||
lim2 = " and ".join(["tags not like ?" for t in no])
|
||
if lim:
|
||
lim = "(%s) and %s" % (lim, lim2)
|
||
else:
|
||
lim = lim2
|
||
args += ['%% %s %%' % t for t in no]
|
||
query += " where " + lim
|
||
return self.db.list(query, *args)
|
||
|
||
def setGroupForTags(self, yes, no, gid):
|
||
fids = self.selTagFids(yes, no)
|
||
self.db.execute(
|
||
"update cards set gid = ? where fid in "+ids2str(fids),
|
||
gid)
|
||
|
||
# Finding cards
|
||
##########################################################################
|
||
|
||
def findCards(self, query, full=False):
|
||
return anki.find.Finder(self).findCards(query, full)
|
||
|
||
def findReplace(self, fids, src, dst, regex=None, field=None, fold=True):
|
||
return anki.find.findReplace(self, fids, src, dst, regex, field, fold)
|
||
|
||
def findDuplicates(self, fmids):
|
||
return anki.find.findDuplicates(self, fmids)
|
||
|
||
# Stats
|
||
##########################################################################
|
||
|
||
def cardStats(self, card):
|
||
from anki.stats import CardStats
|
||
return CardStats(self, card).report()
|
||
|
||
def stats(self):
|
||
from anki.stats import DeckStats
|
||
return DeckStats(self)
|
||
|
||
# Timeboxing
|
||
##########################################################################
|
||
|
||
def startTimebox(self):
|
||
self.lastSessionStart = self.sessionStartTime
|
||
self.sessionStartTime = time.time()
|
||
self.sessionStartReps = self.repsToday
|
||
|
||
def stopTimebox(self):
|
||
self.sessionStartTime = 0
|
||
|
||
def timeboxStarted(self):
|
||
return self.sessionStartTime
|
||
|
||
def timeboxReached(self):
|
||
if not self.sessionStartTime:
|
||
# not started
|
||
return False
|
||
if (self.sessionTimeLimit and time.time() >
|
||
(self.sessionStartTime + self.sessionTimeLimit)):
|
||
return True
|
||
if (self.sessionRepLimit and self.sessionRepLimit <=
|
||
self.repsToday - self.sessionStartReps):
|
||
return True
|
||
return False
|
||
|
||
# Syncing
|
||
##########################################################################
|
||
|
||
def enableSyncing(self):
|
||
self.syncName = self.getSyncName()
|
||
|
||
def disableSyncing(self):
|
||
self.syncName = u""
|
||
|
||
def syncingEnabled(self):
|
||
return not not self.syncName
|
||
|
||
def genSyncName(self):
|
||
return unicode(checksum(self.path.encode("utf-8")))
|
||
|
||
def syncHashBad(self):
|
||
if self.syncName and self.syncName != self.genSyncName():
|
||
self.disableSyncing()
|
||
return True
|
||
|
||
# Schedulers and cramming
|
||
##########################################################################
|
||
|
||
def stdSched(self):
|
||
"True if scheduler changed."
|
||
if self.sched.name != "std":
|
||
self.cleanup()
|
||
self.sched = self._stdSched
|
||
return True
|
||
|
||
def cramGroups(self, order="mod desc", min=0, max=None):
|
||
self.stdSched()
|
||
self.sched = anki.cram.CramScheduler(self, order, min, max)
|
||
|
||
# Undo
|
||
##########################################################################
|
||
|
||
def clearUndo(self):
|
||
# [type, undoName, data]
|
||
# type 1 = review; type 2 = checkpoint
|
||
self._undo = None
|
||
|
||
def undoName(self):
|
||
"Undo menu item name, or None if undo unavailable."
|
||
if not self._undo:
|
||
return None
|
||
return self._undo[1]
|
||
|
||
def undo(self):
|
||
if self._undo[0] == 1:
|
||
self._undoReview()
|
||
else:
|
||
self._undoOp()
|
||
|
||
def markReview(self, card):
|
||
old = []
|
||
if self._undo:
|
||
if self._undo[0] == 1:
|
||
old = self._undo[2]
|
||
self.clearUndo()
|
||
self._undo = [1, _("Review"), old + [copy.copy(card)]]
|
||
|
||
def _undoReview(self):
|
||
data = self._undo[2]
|
||
c = data.pop()
|
||
if not data:
|
||
self.clearUndo()
|
||
# write old data
|
||
c.flush()
|
||
# and delete revlog entry
|
||
last = self.db.scalar(
|
||
"select time from revlog where cid = ? "
|
||
"order by time desc limit 1", c.id)
|
||
self.db.execute("delete from revlog where time = ?", last)
|
||
|
||
def _markOp(self, name):
|
||
"Call via .save()"
|
||
if name:
|
||
self._undo = [2, name]
|
||
else:
|
||
# saving disables old checkpoint, but not review undo
|
||
if self._undo and self._undo[0] == 2:
|
||
self.clearUndo()
|
||
|
||
def _undoOp(self):
|
||
self.rollback()
|
||
self.clearUndo()
|
||
|
||
# DB maintenance
|
||
##########################################################################
|
||
|
||
def fixIntegrity(self):
|
||
"Fix possible problems and rebuild caches."
|
||
self.modSchema(check=False)
|
||
problems = []
|
||
self.save()
|
||
oldSize = os.stat(self.path)[stat.ST_SIZE]
|
||
# delete any facts with missing cards
|
||
ids = self.db.list("""
|
||
select id from facts where id not in (select distinct fid from cards)""")
|
||
self._delFacts(ids)
|
||
# tags
|
||
self.db.execute("delete from tags")
|
||
self.updateFactTags()
|
||
# field cache
|
||
for m in self.models().values():
|
||
self.updateFieldCache(m.fids())
|
||
# and finally, optimize
|
||
self.optimize()
|
||
newSize = os.stat(self.path)[stat.ST_SIZE]
|
||
save = (oldSize - newSize)/1024
|
||
txt = _("Database rebuilt and optimized.")
|
||
if save > 0:
|
||
txt += "\n" + _("Saved %dKB.") % save
|
||
problems.append(txt)
|
||
self.save()
|
||
return "\n".join(problems)
|
||
|
||
def optimize(self):
|
||
self.db.execute("vacuum")
|
||
self.db.execute("analyze")
|
||
self.lock()
|