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Anki/anki/deck.py

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# -*- coding: utf-8 -*-
# Copyright: Damien Elmes <anki@ichi2.net>
# License: GNU GPL, version 3 or later; http://www.gnu.org/copyleft/gpl.html
"""\
The Deck
====================
"""
__docformat__ = 'restructuredtext'
import tempfile, time, os, random, sys, re, stat, shutil, types, traceback
from anki.db import *
from anki.lang import _, ngettext
from anki.errors import DeckAccessError
from anki.stdmodels import BasicModel
from anki.utils import parseTags, tidyHTML, genID, ids2str, hexifyID, \
canonifyTags, joinTags, addTags
from anki.history import CardHistoryEntry
from anki.models import Model, CardModel, formatQA
from anki.stats import dailyStats, globalStats, genToday
from anki.fonts import toPlatformFont
from anki.tags import initTagTables, tagIds
from operator import itemgetter
from itertools import groupby
from anki.hooks import runHook
# ensure all the metadata in other files is loaded before proceeding
import anki.models, anki.facts, anki.cards, anki.stats
import anki.history, anki.media
# auto priorities
PRIORITY_HIGH = 4
PRIORITY_MED = 3
PRIORITY_NORM = 2
PRIORITY_LOW = 1
PRIORITY_NONE = 0
# manual priorities
PRIORITY_REVEARLY = -1
PRIORITY_BURIED = -2
PRIORITY_SUSPENDED = -3
# rest
MATURE_THRESHOLD = 21
NEW_CARDS_DISTRIBUTE = 0
NEW_CARDS_LAST = 1
NEW_CARDS_FIRST = 2
NEW_CARDS_RANDOM = 0
NEW_CARDS_OLD_FIRST = 1
NEW_CARDS_NEW_FIRST = 2
REV_CARDS_OLD_FIRST = 0
REV_CARDS_NEW_FIRST = 1
REV_CARDS_DUE_FIRST = 2
REV_CARDS_RANDOM = 3
SEARCH_TAG = 0
SEARCH_TYPE = 1
SEARCH_PHRASE = 2
SEARCH_FID = 3
DECK_VERSION = 43
deckVarsTable = Table(
'deckVars', metadata,
Column('key', UnicodeText, nullable=False, primary_key=True),
Column('value', UnicodeText))
# parts of the code assume we only have one deck
decksTable = Table(
'decks', metadata,
Column('id', Integer, primary_key=True),
Column('created', Float, nullable=False, default=time.time),
Column('modified', Float, nullable=False, default=time.time),
Column('description', UnicodeText, nullable=False, default=u""),
Column('version', Integer, nullable=False, default=DECK_VERSION),
Column('currentModelId', Integer, ForeignKey("models.id")),
# syncing
Column('syncName', UnicodeText),
Column('lastSync', Float, nullable=False, default=0),
# scheduling
##############
# initial intervals
Column('hardIntervalMin', Float, nullable=False, default=0.333),
Column('hardIntervalMax', Float, nullable=False, default=0.5),
Column('midIntervalMin', Float, nullable=False, default=3.0),
Column('midIntervalMax', Float, nullable=False, default=5.0),
Column('easyIntervalMin', Float, nullable=False, default=7.0),
Column('easyIntervalMax', Float, nullable=False, default=9.0),
# delays on failure
Column('delay0', Integer, nullable=False, default=600),
Column('delay1', Integer, nullable=False, default=600),
Column('delay2', Float, nullable=False, default=0.0),
# collapsing future cards
Column('collapseTime', Integer, nullable=False, default=1),
# priorities & postponing
Column('highPriority', UnicodeText, nullable=False, default=u"PriorityVeryHigh"),
Column('medPriority', UnicodeText, nullable=False, default=u"PriorityHigh"),
Column('lowPriority', UnicodeText, nullable=False, default=u"PriorityLow"),
Column('suspended', UnicodeText, nullable=False, default=u""),
# 0 is random, 1 is by input date
Column('newCardOrder', Integer, nullable=False, default=1),
# when to show new cards
Column('newCardSpacing', Integer, nullable=False, default=NEW_CARDS_DISTRIBUTE),
# limit the number of failed cards in play
Column('failedCardMax', Integer, nullable=False, default=20),
# number of new cards to show per day
Column('newCardsPerDay', Integer, nullable=False, default=20),
# currently unused
Column('sessionRepLimit', Integer, nullable=False, default=0),
Column('sessionTimeLimit', Integer, nullable=False, default=600),
# stats offset
Column('utcOffset', Float, nullable=False, default=-1),
# count cache
Column('cardCount', Integer, nullable=False, default=0),
Column('factCount', Integer, nullable=False, default=0),
Column('failedNowCount', Integer, nullable=False, default=0),
Column('failedSoonCount', Integer, nullable=False, default=0),
Column('revCount', Integer, nullable=False, default=0),
Column('newCount', Integer, nullable=False, default=0),
# rev order
Column('revCardOrder', Integer, nullable=False, default=0))
class Deck(object):
"Top-level object. Manages facts, cards and scheduling information."
factorFour = 1.3
initialFactor = 2.5
maxScheduleTime = 36500
def __init__(self, path=None):
"Create a new deck."
# a limit of 1 deck in the table
self.id = 1
# db session factory and instance
self.Session = None
self.s = None
def _initVars(self):
self.tmpMediaDir = None
self.forceMediaDir = None
self.lastTags = u""
self.lastLoaded = time.time()
self.undoEnabled = False
self.sessionStartReps = 0
self.sessionStartTime = 0
self.lastSessionStart = 0
self.newEarly = False
self.reviewEarly = False
def modifiedSinceSave(self):
return self.modified > self.lastLoaded
# Getting the next card
##########################################################################
def getCard(self, orm=True):
"Return the next card object, or None."
self.checkDue()
id = self.getCardId()
if id:
return self.cardFromId(id, orm)
def getCardId(self):
"Return the next due card id, or None."
# failed card due?
if self.delay0 and self.failedNowCount:
return self.s.scalar("select id from failedCards limit 1")
# failed card queue too big?
if (self.failedCardMax and
self.failedSoonCount >= self.failedCardMax):
return self.s.scalar(
"select id from failedCards limit 1")
# distribute new cards?
if self._timeForNewCard():
id = self._maybeGetNewCard()
if id:
return id
# card due for review?
if self.revCount:
return self._getRevCard()
# new cards left?
id = self._maybeGetNewCard()
if id:
return id
# review ahead?
if self.reviewEarly:
id = self.getCardIdAhead()
if id:
return id
else:
self.resetAfterReviewEarly()
self.checkDue()
# display failed cards early/last
if self._showFailedLast():
id = self.s.scalar(
"select id from failedCards limit 1")
if id:
return id
def getCardIdAhead(self):
"Return the first card that would become due."
id = self.s.scalar("""
select id from cards
where type = 1 and isDue = 0 and priority in (1,2,3,4)
order by combinedDue
limit 1""")
return id
# Get card: helper functions
##########################################################################
def _timeForNewCard(self):
"True if it's time to display a new card when distributing."
if self.newCardSpacing == NEW_CARDS_LAST:
return False
if self.newCardSpacing == NEW_CARDS_FIRST:
return True
# force old if there are very high priority cards
if self.s.scalar(
"select 1 from cards where type = 1 and isDue = 1 "
"and priority = 4 limit 1"):
return False
if self.newCardModulus:
return self._dailyStats.reps % self.newCardModulus == 0
else:
return False
def _maybeGetNewCard(self):
"Get a new card, provided daily new card limit not exceeded."
if not self.newCountToday and not self.newEarly:
return
return self._getNewCard()
def newCardTable(self):
return ("acqCardsOld",
"acqCardsOld",
"acqCardsNew")[self.newCardOrder]
def revCardTable(self):
return ("revCardsOld",
"revCardsNew",
"revCardsDue",
"revCardsRandom")[self.revCardOrder]
def _getNewCard(self):
"Return the next new card id, if exists."
return self.s.scalar(
"select id from %s limit 1" % self.newCardTable())
def _getRevCard(self):
"Return the next review card id."
return self.s.scalar(
"select id from %s limit 1" % self.revCardTable())
def _showFailedLast(self):
return self.collapseTime or not self.delay0
def cardFromId(self, id, orm=False):
"Given a card ID, return a card, and start the card timer."
if orm:
card = self.s.query(anki.cards.Card).get(id)
if not card:
return
card.timerStopped = False
else:
card = anki.cards.Card()
if not card.fromDB(self.s, id):
return
card.genFuzz()
card.startTimer()
return card
# Getting cards in bulk
##########################################################################
# this is used for the website and ankimini
# done in rows for efficiency
def getCards(self, extraMunge=None):
"Get a number of cards and related data for client display."
d = self._getCardTables()
def munge(row):
row = list(row)
row[0] = str(row[0])
row[1] = str(row[1])
row[2] = int(row[2])
row[5] = hexifyID(row[5])
if extraMunge:
return extraMunge(row)
return row
for type in ('fail', 'rev', 'acq'):
d[type] = [munge(x) for x in d[type]]
if d['fail'] or d['rev'] or d['acq']:
d['stats'] = self.getStats()
d['status'] = 'cardsAvailable'
d['initialIntervals'] = (
self.hardIntervalMin,
self.hardIntervalMax,
self.midIntervalMin,
self.midIntervalMax,
self.easyIntervalMin,
self.easyIntervalMax,
)
d['newCardSpacing'] = self.newCardSpacing
d['newCardModulus'] = self.newCardModulus
return d
else:
if self.isEmpty():
fin = ""
else:
fin = self.deckFinishedMsg()
return {"status": "deckFinished",
"finishedMsg": fin}
def _getCardTables(self):
self.checkDue()
sel = """
select id, factId, modified, question, answer, cardModelId,
type, due, interval, factor, priority from """
new = self.newCardTable()
rev = self.revCardTable()
d = {}
d['fail'] = self.s.all(sel + """
cards where type = 0 and isDue = 1 and
combinedDue <= :now limit 30""", now=time.time())
d['rev'] = self.s.all(sel + rev + " limit 30")
if self.newCountToday:
d['acq'] = self.s.all(sel + """
%s where factId in (select distinct factId from cards
where factId in (select factId from %s limit 60))""" % (new, new))
else:
d['acq'] = []
if (not d['fail'] and not d['rev'] and not d['acq']):
d['fail'] = self.s.all(sel + "failedCards limit 100")
return d
# Answering a card
##########################################################################
def answerCard(self, card, ease):
undoName = _("Answer Card")
self.setUndoStart(undoName)
now = time.time()
# old state
oldState = self.cardState(card)
lastDelaySecs = time.time() - card.combinedDue
lastDelay = lastDelaySecs / 86400.0
oldSuc = card.successive
# update card details
last = card.interval
card.interval = self.nextInterval(card, ease)
if lastDelay >= 0:
# keep last interval if reviewing early
card.lastInterval = last
if card.reps:
# only update if card was not new
card.lastDue = card.due
card.due = self.nextDue(card, ease, oldState)
card.isDue = 0
card.lastFactor = card.factor
if lastDelay >= 0:
# don't update factor if learning ahead
self.updateFactor(card, ease)
# spacing
(minSpacing, spaceFactor) = self.s.first("""
select models.initialSpacing, models.spacing from
facts, models where facts.modelId = models.id and facts.id = :id""", id=card.factId)
minOfOtherCards = self.s.scalar("""
select min(interval) from cards
where factId = :fid and id != :id""", fid=card.factId, id=card.id) or 0
if minOfOtherCards:
space = min(minOfOtherCards, card.interval)
else:
space = 0
space = space * spaceFactor * 86400.0
space = max(minSpacing, space)
space += time.time()
# check what other cards we've spaced
if self.reviewEarly:
extra = ""
else:
# if not reviewing early, make sure the current card is counted
# even if it was not due yet (it's a failed card)
extra = "or id = :cid"
for (type, count) in self.s.all("""
select type, count(type) from cards
where factId = :fid and
(isDue = 1 %s)
group by type""" % extra, fid=card.factId, cid=card.id):
if type == 0:
self.failedSoonCount -= count
elif type == 1:
self.revCount -= count
else:
self.newCount -= count
# space other cards
self.s.statement("""
update cards set
spaceUntil = :space,
combinedDue = max(:space, due),
modified = :now,
isDue = 0
where id != :id and factId = :factId""",
id=card.id, space=space, now=now, factId=card.factId)
card.spaceUntil = 0
# temp suspend if learning ahead
if self.reviewEarly and lastDelay < 0:
if oldSuc or lastDelaySecs > self.delay0 or not self._showFailedLast():
card.priority = -1
# card stats
anki.cards.Card.updateStats(card, ease, oldState)
card.toDB(self.s)
# global/daily stats
anki.stats.updateAllStats(self.s, self._globalStats, self._dailyStats,
card, ease, oldState)
# review history
entry = CardHistoryEntry(card, ease, lastDelay)
entry.writeSQL(self.s)
self.modified = now
isLeech = self.isLeech(card)
if isLeech:
self.handleLeech(card)
runHook("cardAnswered", card.id, isLeech)
self.setUndoEnd(undoName)
def isLeech(self, card):
no = card.noCount
fmax = self.getInt('leechFails')
if not fmax:
return
return (
# failed
not card.successive and
# greater than fail threshold
no >= fmax and
# at least threshold/2 reps since last time
(fmax - no) % (max(fmax/2, 1)) == 0)
def handleLeech(self, card):
self.refresh()
scard = self.cardFromId(card.id, True)
tags = scard.fact.tags
tags = addTags("Leech", tags)
scard.fact.tags = canonifyTags(tags)
scard.fact.setModified(textChanged=True)
self.updateFactTags([scard.fact.id])
self.s.flush()
self.s.expunge(scard)
if self.getBool('suspendLeeches'):
self.suspendCards([card.id])
self.refresh()
# Interval management
##########################################################################
def nextInterval(self, card, ease):
"Return the next interval for CARD given EASE."
delay = self._adjustedDelay(card, ease)
return self._nextInterval(card, delay, ease)
def _nextInterval(self, card, delay, ease):
interval = card.interval
factor = card.factor
# if shown early and not failed
if delay < 0 and card.successive:
interval = max(card.lastInterval, card.interval + delay)
if interval < self.midIntervalMin:
interval = 0
delay = 0
# if interval is less than mid interval, use presets
if ease == 1:
interval *= self.delay2
if interval < self.hardIntervalMin:
interval = 0
elif interval == 0:
if ease == 2:
interval = random.uniform(self.hardIntervalMin,
self.hardIntervalMax)
elif ease == 3:
interval = random.uniform(self.midIntervalMin,
self.midIntervalMax)
elif ease == 4:
interval = random.uniform(self.easyIntervalMin,
self.easyIntervalMax)
else:
# if not cramming, boost initial 2
if (interval < self.hardIntervalMax and
interval > 0.166):
mid = (self.midIntervalMin + self.midIntervalMax) / 2.0
interval = mid / factor
# multiply last interval by factor
if ease == 2:
interval = (interval + delay/4) * 1.2
elif ease == 3:
interval = (interval + delay/2) * factor
elif ease == 4:
interval = (interval + delay) * factor * self.factorFour
fuzz = random.uniform(0.95, 1.05)
interval *= fuzz
if self.maxScheduleTime:
interval = min(interval, self.maxScheduleTime)
return interval
def nextIntervalStr(self, card, ease, short=False):
"Return the next interval for CARD given EASE as a string."
int = self.nextInterval(card, ease)
return anki.utils.fmtTimeSpan(int*86400, short=short)
def nextDue(self, card, ease, oldState):
"Return time when CARD will expire given EASE."
if ease == 1:
if oldState == "mature":
due = self.delay1
else:
due = self.delay0
else:
due = card.interval * 86400.0
return due + time.time()
def updateFactor(self, card, ease):
"Update CARD's factor based on EASE."
card.lastFactor = card.factor
if not card.reps:
# card is new, inherit beginning factor
card.factor = self.averageFactor
if self.cardIsBeingLearnt(card) and ease in [0, 1, 2]:
# only penalize failures after success when starting
if card.successive and ease != 2:
card.factor -= 0.20
elif ease in [0, 1]:
card.factor -= 0.20
elif ease == 2:
card.factor -= 0.15
elif ease == 4:
card.factor += 0.10
card.factor = max(1.3, card.factor)
def _adjustedDelay(self, card, ease):
"Return an adjusted delay value for CARD based on EASE."
if self.cardIsNew(card):
return 0
if card.combinedDue <= time.time():
return (time.time() - card.due) / 86400.0
else:
return (time.time() - card.combinedDue) / 86400.0
def resetCards(self, ids):
"Reset progress on cards in IDS."
self.s.statement("""
update cards set interval = :new, lastInterval = 0, lastDue = 0,
factor = 2.5, reps = 0, successive = 0, averageTime = 0, reviewTime = 0,
youngEase0 = 0, youngEase1 = 0, youngEase2 = 0, youngEase3 = 0,
youngEase4 = 0, matureEase0 = 0, matureEase1 = 0, matureEase2 = 0,
matureEase3 = 0,matureEase4 = 0, yesCount = 0, noCount = 0,
spaceUntil = 0, isDue = 0, type = 2,
combinedDue = created, modified = :now, due = created
where id in %s""" % ids2str(ids), now=time.time(), new=0)
if self.newCardOrder == NEW_CARDS_RANDOM:
# we need to re-randomize now
self.randomizeNewCards(ids)
self.flushMod()
self.refresh()
def randomizeNewCards(self, cardIds=None):
"Randomize 'due' on all new cards."
now = time.time()
query = "select distinct factId from cards where type = 2"
if cardIds:
query += " and id in %s" % ids2str(cardIds)
fids = self.s.column0(query)
data = [{'fid': fid,
'rand': random.uniform(0, now),
'now': now} for fid in fids]
self.s.statements("""
update cards
set due = :rand + ordinal,
combinedDue = max(:rand + ordinal, spaceUntil),
modified = :now
where factId = :fid
and type = 2""", data)
def orderNewCards(self):
"Set 'due' to card creation time."
self.s.statement("""
update cards set
due = created,
combinedDue = max(spaceUntil, due),
modified = :now
where type = 2""", now=time.time())
def rescheduleCards(self, ids, min, max):
"Reset cards and schedule with new interval in days (min, max)."
self.resetCards(ids)
vals = []
for id in ids:
r = random.uniform(min*86400, max*86400)
vals.append({
'id': id,
'due': r + time.time(),
'int': r / 86400.0,
't': time.time(),
})
self.s.statements("""
update cards set
interval = :int,
due = :due,
combinedDue = :due,
reps = 1,
successive = 1,
yesCount = 1,
firstAnswered = :t,
type = 1,
isDue = 0
where id = :id""", vals)
self.flushMod()
# Queue/cache management
##########################################################################
def rebuildTypes(self, where=""):
"Rebuild the type cache. Only necessary on upgrade."
self.s.statement("""
update cards
set type = (case
when successive = 0 and reps != 0
then 0 -- failed
when successive != 0 and reps != 0
then 1 -- review
else 2 -- new
end)""" + where)
def rebuildCounts(self, full=True):
# need to check due first, so new due cards are not added later
self.checkDue()
# global counts
if full:
self.cardCount = self.s.scalar("select count(*) from cards")
self.factCount = self.s.scalar("select count(*) from facts")
# due counts
self.failedSoonCount = self.s.scalar(
"select count(*) from failedCards")
self.failedNowCount = self.s.scalar("""
select count(*) from cards where type = 0 and isDue = 1
and combinedDue <= :t""", t=time.time())
self.revCount = self.s.scalar(
"select count(*) from cards where "
"type = 1 and priority in (1,2,3,4) and isDue = 1")
self.newCount = self.s.scalar(
"select count(*) from cards where "
"type = 2 and priority in (1,2,3,4) and isDue = 1")
def forceIndex(self, index):
ver = sqlite.sqlite_version.split(".")
if int(ver[1]) >= 6 and int(ver[2]) >= 4:
# only supported in 3.6.4+
return " indexed by " + index + " "
return ""
def checkDue(self):
"Mark expired cards due, and update counts."
self.checkDailyStats()
# mark due & update counts
stmt = ("update cards " + self.forceIndex("ix_cards_priorityDue") +
"set isDue = 1 where type = %d and isDue = 0 and " +
"priority in (1,2,3,4) and combinedDue <= :now")
# failed cards
self.failedSoonCount += self.s.statement(
stmt % 0, now=time.time()+self.delay0).rowcount
self.failedNowCount = self.s.scalar("""
select count(*) from cards where
type = 0 and isDue = 1 and combinedDue <= :now""", now=time.time())
# review
self.revCount += self.s.statement(
stmt % 1, now=time.time()).rowcount
# new
self.newCount += self.s.statement(
stmt % 2, now=time.time()).rowcount
self.newCountToday = max(min(
self.newCount, self.newCardsPerDay -
self.newCardsToday()), 0)
def rebuildQueue(self):
"Update relative delays based on current time."
# setup global/daily stats
self._globalStats = globalStats(self)
self._dailyStats = dailyStats(self)
# mark due cards and update counts
self.checkDue()
# invalid card count
# determine new card distribution
if self.newCardSpacing == NEW_CARDS_DISTRIBUTE:
if self.newCountToday:
self.newCardModulus = (
(self.newCountToday + self.revCount) / self.newCountToday)
# if there are cards to review, ensure modulo >= 2
if self.revCount:
self.newCardModulus = max(2, self.newCardModulus)
else:
self.newCardModulus = 0
else:
self.newCardModulus = 0
# determine starting factor for new cards
self.averageFactor = (self.s.scalar(
"select avg(factor) from cards where type = 1")
or Deck.initialFactor)
# recache css
self.rebuildCSS()
def checkDailyStats(self):
# check if the day has rolled over
if genToday(self) != self._dailyStats.day:
self._dailyStats = dailyStats(self)
def resetAfterReviewEarly(self):
ids = self.s.column0("select id from cards where priority = -1")
if ids:
self.updatePriorities(ids)
self.flushMod()
if self.reviewEarly or self.newEarly:
self.reviewEarly = False
self.newEarly = False
self.checkDue()
# Times
##########################################################################
def nextDueMsg(self):
next = self.earliestTime()
if next:
newCount = self.s.scalar("""
select count() from cards where type = 2
and priority in (1,2,3,4)""")
newCardsTomorrow = min(newCount, self.newCardsPerDay)
cards = self.cardsDueBy(time.time() + 86400)
msg = _('''\
<style>b { color: #00f; }</style>
At this time tomorrow:<br>
%(wait)s<br>
%(new)s''') % {
'new': ngettext("There will be <b>%d new</b> card.",
"There will be <b>%d new</b> cards.",
newCardsTomorrow) % newCardsTomorrow,
'wait': ngettext("There will be <b>%s review</b>.",
"There will be <b>%s reviews</b>.", cards) % cards,
}
if next - time.time() > 86400 and not newCardsTomorrow:
msg = (_("The next review is in <b>%s</b>.") %
self.earliestTimeStr())
else:
msg = _("No cards are due.")
return msg
def earliestTime(self):
"""Return the time of the earliest card.
This may be in the past if the deck is not finished.
If the deck has no (enabled) cards, return None.
Ignore new cards."""
return self.s.scalar("""
select combinedDue from cards where priority in (1,2,3,4) and
type in (0, 1) order by combinedDue limit 1""")
def earliestTimeStr(self, next=None):
"""Return the relative time to the earliest card as a string."""
if next == None:
next = self.earliestTime()
if not next:
return _("unknown")
diff = next - time.time()
return anki.utils.fmtTimeSpan(diff)
def cardsDueBy(self, time):
"Number of cards due at TIME. Ignore new cards"
return self.s.scalar("""
select count(id) from cards where combinedDue < :time
and priority in (1,2,3,4) and type in (0, 1)""", time=time)
def deckFinishedMsg(self):
self.resetAfterReviewEarly()
spaceSusp = ""
c= self.spacedCardCount()
if c:
spaceSusp += ngettext('There is %d delayed new card.',
'There are %d delayed new cards.',
c) % c
c2 = self.suspendedCardCount()
if c2:
if spaceSusp:
spaceSusp += "<br>"
spaceSusp += ngettext('There is %d suspended card.',
'There are %d suspended cards.',
c2) % c2
c3 = self.inactiveCardCount()
if c3:
if spaceSusp:
spaceSusp += "<br>"
spaceSusp += ngettext('There is %d inactive card.',
'There are %d inactive cards.',
c3) % c3
c4 = self.leechCardCount()
if c4:
if spaceSusp:
spaceSusp += "<br>"
spaceSusp += ngettext('There is %d leech.',
'There are %d leeches.',
c4) % c4
if spaceSusp:
spaceSusp = "<br><br>" + spaceSusp
return _('''\
<div style="white-space: normal;">
<h1>Congratulations!</h1>You have finished for now.<br><br>
%(next)s
%(spaceSusp)s
</div>''') % {
"next": self.nextDueMsg(),
"spaceSusp": spaceSusp,
}
# Priorities
##########################################################################
def updateAllPriorities(self, partial=False, dirty=True):
"Update all card priorities if changed."
new = self.updateTagPriorities()
if not partial:
new = self.s.all("select id, priority as pri from tags")
cids = self.s.column0(
"select distinct cardId from cardTags where tagId in %s" %
ids2str([x['id'] for x in new]))
self.updatePriorities(cids, dirty=dirty)
def updateTagPriorities(self):
"Update priority setting on tags table."
# make sure all priority tags exist
for s in (self.lowPriority, self.medPriority,
self.highPriority, self.suspended):
tagIds(self.s, parseTags(s))
tags = self.s.all("select lower(tag), id, priority from tags")
up = {}
for (type, pri) in ((self.lowPriority, 1),
(self.medPriority, 3),
(self.highPriority, 4),
(self.suspended, 0)):
for tag in parseTags(type.lower()):
up[tag] = pri
new = []
for (tag, id, pri) in tags:
if tag in up and up[tag] != pri:
new.append({'id': id, 'pri': up[tag]})
elif tag not in up and pri != 2:
new.append({'id': id, 'pri': 2})
self.s.statements(
"update tags set priority = :pri where id = :id",
new)
return new
def updatePriorities(self, cardIds, suspend=[], dirty=True):
# any tags to suspend
if suspend:
ids = tagIds(self.s, suspend)
self.s.statement(
"update tags set priority = 0 where id in %s" %
ids2str(ids.values()))
if len(cardIds) > 1000:
limit = ""
else:
limit = "and cardTags.cardId in %s" % ids2str(cardIds)
cards = self.s.all("""
select cardTags.cardId,
case
when min(tags.priority) = 0 then 0
when max(tags.priority) > 2 then max(tags.priority)
when min(tags.priority) = 1 then 1
else 2 end
from cardTags, tags
where cardTags.tagId = tags.id
%s
group by cardTags.cardId""" % limit)
if dirty:
extra = ", modified = :m "
else:
extra = ""
for pri in range(5):
cs = [c[0] for c in cards if c[1] == pri]
if cs:
# catch review early & buried but not suspended
self.s.statement((
"update cards set priority = :pri %s where id in %s "
"and priority != :pri and priority >= -2") % (
extra, ids2str(cs)), pri=pri, m=time.time())
cnt = self.s.execute(
"update cards set isDue = 0 where type in (0,1,2) and "
"priority = 0 and isDue = 1").rowcount
if cnt:
self.rebuildCounts(full=False)
def updatePriority(self, card):
"Update priority on a single card."
self.s.flush()
self.updatePriorities([card.id])
# Suspending
##########################################################################
def suspendCards(self, ids):
self.startProgress()
self.s.statement(
"update cards set isDue=0, priority=-3, modified=:t "
"where id in %s" % ids2str(ids), t=time.time())
self.rebuildCounts(full=False)
self.flushMod()
self.finishProgress()
def unsuspendCards(self, ids):
self.startProgress()
self.s.statement(
"update cards set priority=0, modified=:t where id in %s" %
ids2str(ids), t=time.time())
self.updatePriorities(ids)
self.rebuildCounts(full=False)
self.flushMod()
self.finishProgress()
# Card/fact counts - all in deck, not just due
##########################################################################
def suspendedCardCount(self):
return self.s.scalar("""
select count(id) from cards where priority = -3""")
def inactiveCardCount(self):
return self.s.scalar("""
select count(id) from cards where priority = 0""")
def leechCardCount(self):
return len(self.findCards("is:suspended tag:leech"))
def seenCardCount(self):
return self.s.scalar(
"select count(id) from cards where type != 2")
# Counts related to due cards
##########################################################################
def newCardsToday(self):
return (self._dailyStats.newEase0 +
self._dailyStats.newEase1 +
self._dailyStats.newEase2 +
self._dailyStats.newEase3 +
self._dailyStats.newEase4)
def spacedCardCount(self):
"Number of spaced new cards."
return self.s.scalar("""
select count(cards.id) from cards %s where
type = 2 and isDue = 0 and priority in (1,2,3,4) and combinedDue > :now
and due < :now""" % self.forceIndex("ix_cards_priorityDue"), now=time.time())
def isEmpty(self):
return not self.cardCount
def matureCardCount(self):
return self.s.scalar(
"select count(id) from cards where interval >= :t ",
t=MATURE_THRESHOLD)
def youngCardCount(self):
return self.s.scalar(
"select count(id) from cards where interval < :t "
"and reps != 0", t=MATURE_THRESHOLD)
def newCountAll(self):
"All new cards, including spaced."
return self.s.scalar(
"select count(id) from cards where type = 2")
# Card predicates
##########################################################################
def cardState(self, card):
if self.cardIsNew(card):
return "new"
elif card.interval > MATURE_THRESHOLD:
return "mature"
return "young"
def cardIsNew(self, card):
"True if a card has never been seen before."
return card.reps == 0
def cardIsBeingLearnt(self, card):
"True if card should use present intervals."
return card.interval < self.easyIntervalMin
def cardIsYoung(self, card):
"True if card is not new and not mature."
return (not self.cardIsNew(card) and
not self.cardIsMature(card))
def cardIsMature(self, card):
return card.interval >= MATURE_THRESHOLD
# Stats
##########################################################################
def getStats(self, short=False):
"Return some commonly needed stats."
stats = anki.stats.getStats(self.s, self._globalStats, self._dailyStats)
# add scheduling related stats
stats['new'] = self.newCountToday
stats['failed'] = self.failedSoonCount
stats['rev'] = self.revCount
if stats['dAverageTime']:
stats['timeLeft'] = anki.utils.fmtTimeSpan(
self.getETA(stats), pad=0, point=1, short=short)
else:
stats['timeLeft'] = _("Unknown")
return stats
def getETA(self, stats):
# rev + new cards first, account for failures
count = stats['rev'] + stats['new']
count *= 1 + stats['gYoungNo%'] / 100.0
left = count * stats['dAverageTime']
# failed - higher time per card for higher amount of cards
failedBaseMulti = 1.5
failedMod = 0.07
failedBaseCount = 20
factor = (failedBaseMulti +
(failedMod * (stats['failed'] - failedBaseCount)))
left += stats['failed'] * stats['dAverageTime'] * factor
return left
def queueForCard(self, card):
"Return the queue the current card is in."
if self.cardIsNew(card):
return "new"
elif card.successive == 0:
return "failed"
elif card.reps:
return "rev"
# Facts
##########################################################################
def newFact(self, model=None):
"Return a new fact with the current model."
if model is None:
model = self.currentModel
return anki.facts.Fact(model)
def addFact(self, fact):
"Add a fact to the deck. Return list of new cards."
if not fact.model:
fact.model = self.currentModel
# validate
fact.assertValid()
fact.assertUnique(self.s)
# check we have card models available
cms = self.availableCardModels(fact)
if not cms:
return None
# proceed
cards = []
self.s.save(fact)
self.factCount += 1
self.flushMod()
isRandom = self.newCardOrder == NEW_CARDS_RANDOM
if isRandom:
due = random.uniform(0, time.time())
for cardModel in cms:
card = anki.cards.Card(fact, cardModel)
if isRandom:
card.due = due + card.ordinal
card.combinedDue = card.due
self.flushMod()
cards.append(card)
self.updateFactTags([fact.id])
self.updatePriorities([c.id for c in cards])
self.cardCount += len(cards)
self.newCount += len(cards)
# keep track of last used tags for convenience
self.lastTags = fact.tags
self.flushMod()
return fact
def availableCardModels(self, fact, checkActive=True):
"List of active card models that aren't empty for FACT."
models = []
for cardModel in fact.model.cardModels:
if cardModel.active or not checkActive:
ok = True
for (type, format) in [("q", cardModel.qformat),
("a", cardModel.aformat)]:
empty = {}
local = {}; local.update(fact)
for k in fact.keys():
empty[k] = u""
empty["text:"+k] = u""
local["text:"+k] = u""
empty['tags'] = ""
local['tags'] = fact.tags
try:
if format % local == format % empty:
ok = False
except (KeyError, TypeError, ValueError):
ok = False
if ok or type == "a" and cardModel.allowEmptyAnswer:
models.append(cardModel)
return models
def addCards(self, fact, cardModelIds):
"Caller must flush first, flushMod after, rebuild priorities."
for cardModel in self.availableCardModels(fact, False):
if cardModel.id not in cardModelIds:
continue
if self.s.scalar("""
select count(id) from cards
where factId = :fid and cardModelId = :cmid""",
fid=fact.id, cmid=cardModel.id) == 0:
card = anki.cards.Card(
fact, cardModel, created=fact.created+cardModel.ordinal)
self.updateCardTags([card.id])
self.updatePriority(card)
self.cardCount += 1
self.newCount += 1
self.setModified()
def factIsInvalid(self, fact):
"True if existing fact is invalid. Returns the error."
try:
fact.assertValid()
fact.assertUnique(self.s)
except FactInvalidError, e:
return e
def factUseCount(self, factId):
"Return number of cards referencing a given fact id."
return self.s.scalar("select count(id) from cards where factId = :id",
id=factId)
def deleteFact(self, factId):
"Delete a fact. Removes any associated cards. Don't flush."
self.s.flush()
# remove any remaining cards
self.s.statement("insert into cardsDeleted select id, :time "
"from cards where factId = :factId",
time=time.time(), factId=factId)
self.s.statement(
"delete from cards where factId = :id", id=factId)
# and then the fact
self.deleteFacts([factId])
self.setModified()
def deleteFacts(self, ids):
"Bulk delete facts by ID. Assume any cards have already been removed."
if not ids:
return
self.s.flush()
now = time.time()
strids = ids2str(ids)
self.s.statement("delete from facts where id in %s" % strids)
self.s.statement("delete from fields where factId in %s" % strids)
data = [{'id': id, 'time': now} for id in ids]
self.s.statements("insert into factsDeleted values (:id, :time)", data)
self.rebuildCounts()
self.setModified()
def deleteDanglingFacts(self):
"Delete any facts without cards. Return deleted ids."
ids = self.s.column0("""
select facts.id from facts
where facts.id not in (select distinct factId from cards)""")
self.deleteFacts(ids)
return ids
def previewFact(self, oldFact):
"Duplicate fact and generate cards for preview. Don't add to deck."
# check we have card models available
cms = self.availableCardModels(oldFact, checkActive=False)
if not cms:
return []
fact = self.cloneFact(oldFact)
# proceed
cards = []
for cardModel in cms:
card = anki.cards.Card(fact, cardModel)
cards.append(card)
return cards
def cloneFact(self, oldFact):
"Copy fact into new session."
model = self.s.query(Model).get(oldFact.model.id)
fact = self.newFact(model)
for field in fact.fields:
fact[field.name] = oldFact[field.name]
fact.tags = oldFact.tags
return fact
# Cards
##########################################################################
def deleteCard(self, id):
"Delete a card given its id. Delete any unused facts. Don't flush."
self.deleteCards([id])
def deleteCards(self, ids):
"Bulk delete cards by ID."
if not ids:
return
self.s.flush()
now = time.time()
strids = ids2str(ids)
self.startProgress()
# grab fact ids
factIds = self.s.column0("select factId from cards where id in %s"
% strids)
# drop from cards
self.s.statement("delete from cards where id in %s" % strids)
# note deleted
data = [{'id': id, 'time': now} for id in ids]
self.s.statements("insert into cardsDeleted values (:id, :time)", data)
# gather affected tags
tags = self.s.column0(
"select tagId from cardTags where cardId in %s" %
strids)
# delete
self.s.statement("delete from cardTags where cardId in %s" % strids)
# find out if they're used by anything else
unused = []
for tag in tags:
if not self.s.scalar(
"select 1 from cardTags where tagId = :d limit 1", d=tag):
unused.append(tag)
# delete unused
self.s.statement("delete from tags where id in %s and priority = 2" %
ids2str(unused))
# remove any dangling facts
self.deleteDanglingFacts()
self.rebuildCounts()
self.refresh()
self.flushMod()
self.finishProgress()
# Models
##########################################################################
def addModel(self, model):
if model not in self.models:
self.models.append(model)
self.currentModel = model
self.flushMod()
def deleteModel(self, model):
"Delete MODEL, and delete any referencing cards/facts. Maybe flush."
if self.s.scalar("select count(id) from models where id=:id",
id=model.id):
# delete facts/cards
self.currentModel
self.deleteCards(self.s.column0("""
select cards.id from cards, facts where
facts.modelId = :id and
facts.id = cards.factId""", id=model.id))
# then the model
self.models.remove(model)
self.s.delete(model)
self.s.flush()
if self.currentModel == model:
self.currentModel = self.models[0]
self.s.statement("insert into modelsDeleted values (:id, :time)",
id=model.id, time=time.time())
self.flushMod()
self.refresh()
self.setModified()
def modelUseCount(self, model):
"Return number of facts using model."
return self.s.scalar("select count(facts.modelId) from facts "
"where facts.modelId = :id",
id=model.id)
def deleteEmptyModels(self):
for model in self.models:
if not self.modelUseCount(model):
self.deleteModel(model)
def rebuildCSS(self):
# css for all fields
def _genCSS(prefix, row):
(id, fam, siz, col, align, rtl) = row
t = ""
if fam: t += 'font-family:"%s";' % toPlatformFont(fam)
if siz: t += 'font-size:%dpx;' % siz
if col: t += 'color:%s;' % col
if rtl == "rtl":
t += "direction:rtl;unicode-bidi:embed;"
if align != -1:
if align == 0: align = "center"
elif align == 1: align = "left"
else: align = "right"
t += 'text-align:%s;' % align
if t:
t = "%s%s {%s}\n" % (prefix, hexifyID(id), t)
return t
css = "".join([_genCSS(".fm", row) for row in self.s.all("""
select id, quizFontFamily, quizFontSize, quizFontColour, -1, features from fieldModels""")])
css += "".join([_genCSS("#cmq", row) for row in self.s.all("""
select id, questionFontFamily, questionFontSize, questionFontColour,
questionAlign, 0 from cardModels""")])
css += "".join([_genCSS("#cma", row) for row in self.s.all("""
select id, answerFontFamily, answerFontSize, answerFontColour,
answerAlign, 0 from cardModels""")])
css += "".join([".cmb%s {background:%s;}\n" %
(hexifyID(row[0]), row[1]) for row in self.s.all("""
select id, lastFontColour from cardModels""")])
self.css = css
return css
def copyModel(self, oldModel):
"Add a new model to DB based on MODEL."
m = Model(_("%s copy") % oldModel.name)
for f in oldModel.fieldModels:
f = f.copy()
m.addFieldModel(f)
for c in oldModel.cardModels:
c = c.copy()
m.addCardModel(c)
for attr in ("tags", "spacing", "initialSpacing"):
setattr(m, attr, getattr(oldModel, attr))
self.addModel(m)
return m
def changeModel(self, factIds, newModel, fieldMap, cardMap):
"Caller must call reset."
self.s.flush()
fids = ids2str(factIds)
changed = False
# field remapping
if fieldMap:
changed = True
self.startProgress(len(fieldMap)+2)
seen = {}
for (old, new) in fieldMap.items():
self.updateProgress(_("Changing fields..."))
seen[new] = 1
if new:
# can rename
self.s.statement("""
update fields set
fieldModelId = :new,
ordinal = :ord
where fieldModelId = :old
and factId in %s""" % fids, new=new.id, ord=new.ordinal, old=old.id)
else:
# no longer used
self.s.statement("""
delete from fields where factId in %s
and fieldModelId = :id""" % fids, id=old.id)
# new
for field in newModel.fieldModels:
self.updateProgress()
if field not in seen:
d = [{'id': genID(),
'fid': f,
'fmid': field.id,
'ord': field.ordinal}
for f in factIds]
self.s.statements('''
insert into fields
(id, factId, fieldModelId, ordinal, value)
values
(:id, :fid, :fmid, :ord, "")''', d)
# fact modtime
self.updateProgress()
self.s.statement("""
update facts set
modified = :t,
modelId = :id
where id in %s""" % fids, t=time.time(), id=newModel.id)
self.finishProgress()
# template remapping
self.startProgress(len(cardMap)+4)
toChange = []
self.updateProgress(_("Changing cards..."))
for (old, new) in cardMap.items():
if not new:
# delete
self.s.statement("""
delete from cards
where cardModelId = :cid and
factId in %s""" % fids, cid=old.id)
elif old != new:
# gather ids so we can rename x->y and y->x
ids = self.s.column0("""
select id from cards where
cardModelId = :id and factId in %s""" % fids, id=old.id)
toChange.append((new, ids))
for (new, ids) in toChange:
self.updateProgress()
self.s.statement("""
update cards set
cardModelId = :new,
ordinal = :ord
where id in %s""" % ids2str(ids), new=new.id, ord=new.ordinal)
self.updateProgress()
self.updateCardQACacheFromIds(factIds, type="facts")
self.flushMod()
self.updateProgress()
cardIds = self.s.column0(
"select id from cards where factId in %s" %
ids2str(factIds))
self.updateCardTags(cardIds)
self.updateProgress()
self.updatePriorities(cardIds)
self.updateProgress()
self.rebuildCounts()
self.refresh()
self.finishProgress()
# Fields
##########################################################################
def allFields(self):
"Return a list of all possible fields across all models."
return self.s.column0("select distinct name from fieldmodels")
def deleteFieldModel(self, model, field):
self.startProgress()
self.s.statement("delete from fields where fieldModelId = :id",
id=field.id)
self.s.statement("update facts set modified = :t where modelId = :id",
id=model.id, t=time.time())
model.fieldModels.remove(field)
# update q/a formats
for cm in model.cardModels:
cm.qformat = cm.qformat.replace("%%(%s)s" % field.name, "")
cm.qformat = cm.qformat.replace("%%(text:%s)s" % field.name, "")
cm.aformat = cm.aformat.replace("%%(%s)s" % field.name, "")
cm.aformat = cm.aformat.replace("%%(text:%s)s" % field.name, "")
self.updateCardsFromModel(model)
model.setModified()
self.flushMod()
self.finishProgress()
def addFieldModel(self, model, field):
"Add FIELD to MODEL and update cards."
model.addFieldModel(field)
# commit field to disk
self.s.flush()
self.s.statement("""
insert into fields (factId, fieldModelId, ordinal, value)
select facts.id, :fmid, :ordinal, "" from facts
where facts.modelId = :mid""", fmid=field.id, mid=model.id, ordinal=field.ordinal)
# ensure facts are marked updated
self.s.statement("""
update facts set modified = :t where modelId = :mid"""
, t=time.time(), mid=model.id)
model.setModified()
self.flushMod()
def renameFieldModel(self, model, field, newName):
"Change FIELD's name in MODEL and update FIELD in all facts."
for cm in model.cardModels:
cm.qformat = cm.qformat.replace(
"%%(%s)s" % field.name, "%%(%s)s" % newName)
cm.qformat = cm.qformat.replace(
"%%(text:%s)s" % field.name, "%%(text:%s)s" % newName)
cm.aformat = cm.aformat.replace(
"%%(%s)s" % field.name, "%%(%s)s" % newName)
cm.aformat = cm.aformat.replace(
"%%(text:%s)s" % field.name, "%%(text:%s)s" % newName)
field.name = newName
model.setModified()
self.flushMod()
def fieldModelUseCount(self, fieldModel):
"Return the number of cards using fieldModel."
return self.s.scalar("""
select count(id) from fields where
fieldModelId = :id and value != ""
""", id=fieldModel.id)
def rebuildFieldOrdinals(self, modelId, ids):
"""Update field ordinal for all fields given field model IDS.
Caller must update model modtime."""
self.s.flush()
strids = ids2str(ids)
self.s.statement("""
update fields
set ordinal = (select ordinal from fieldModels where id = fieldModelId)
where fields.fieldModelId in %s""" % strids)
# dirty associated facts
self.s.statement("""
update facts
set modified = strftime("%s", "now")
where modelId = :id""", id=modelId)
self.flushMod()
# Card models
##########################################################################
def cardModelUseCount(self, cardModel):
"Return the number of cards using cardModel."
return self.s.scalar("""
select count(id) from cards where
cardModelId = :id""", id=cardModel.id)
def deleteCardModel(self, model, cardModel):
"Delete all cards that use CARDMODEL from the deck."
cards = self.s.column0("select id from cards where cardModelId = :id",
id=cardModel.id)
self.deleteCards(cards)
model.cardModels.remove(cardModel)
model.setModified()
self.flushMod()
def updateCardsFromModel(self, model, dirty=True):
"Update all card question/answer when model changes."
ids = self.s.all("""
select cards.id, cards.cardModelId, cards.factId, facts.modelId from
cards, facts where
cards.factId = facts.id and
facts.modelId = :id""", id=model.id)
if not ids:
return
self.updateCardQACache(ids, dirty)
def updateCardsFromFactIds(self, ids, dirty=True):
"Update all card question/answer when model changes."
ids = self.s.all("""
select cards.id, cards.cardModelId, cards.factId, facts.modelId from
cards, facts where
cards.factId = facts.id and
facts.id in %s""" % ids2str(ids))
if not ids:
return
self.updateCardQACache(ids, dirty)
def updateCardQACacheFromIds(self, ids, type="cards"):
"Given a list of card or fact ids, update q/a cache."
if type == "facts":
# convert to card ids
ids = self.s.column0(
"select id from cards where factId in %s" % ids2str(ids))
rows = self.s.all("""
select c.id, c.cardModelId, f.id, f.modelId
from cards as c, facts as f
where c.factId = f.id
and c.id in %s""" % ids2str(ids))
self.updateCardQACache(rows)
def updateCardQACache(self, ids, dirty=True):
"Given a list of (cardId, cardModelId, factId, modId), update q/a cache."
if dirty:
mod = ", modified = %f" % time.time()
else:
mod = ""
# tags
tags = dict([(x[0], x[1:]) for x in
self.splitTagsList(
where="and cards.id in %s" %
ids2str([x[0] for x in ids]))])
facts = {}
# fields
for k, g in groupby(self.s.all("""
select fields.factId, fieldModels.name, fieldModels.id, fields.value
from fields, fieldModels where fields.factId in %s and
fields.fieldModelId = fieldModels.id
order by fields.factId""" % ids2str([x[2] for x in ids])),
itemgetter(0)):
facts[k] = dict([(r[1], (r[2], r[3])) for r in g])
# card models
cms = {}
for c in self.s.query(CardModel).all():
cms[c.id] = c
pend = [formatQA(cid, mid, facts[fid], tags[cid], cms[cmid])
for (cid, cmid, fid, mid) in ids]
if pend:
self.s.execute("""
update cards set
question = :question, answer = :answer
%s
where id = :id""" % mod, pend)
self.flushMod()
def rebuildCardOrdinals(self, ids):
"Update all card models in IDS. Caller must update model modtime."
self.s.flush()
strids = ids2str(ids)
self.s.statement("""
update cards set
ordinal = (select ordinal from cardModels where id = cardModelId),
modified = :now
where cardModelId in %s""" % strids, now=time.time())
self.flushMod()
def changeCardModel(self, cardIds, newCardModelId):
self.s.statement("""
update cards set cardModelId = :newId
where id in %s""" % ids2str(cardIds), newId=newCardModelId)
self.updateCardQACacheFromIds(cardIds)
self.flushMod()
# Tags: querying
##########################################################################
def tagsList(self, where="", priority=", cards.priority", kwargs={}):
"Return a list of (cardId, allTags, priority)"
return self.s.all("""
select cards.id, facts.tags || " " || models.tags || " " ||
cardModels.name %s from cards, facts, models, cardModels where
cards.factId == facts.id and facts.modelId == models.id
and cards.cardModelId = cardModels.id %s""" % (priority, where),
**kwargs)
return self.s.all("""
select cards.id, facts.tags || " " || models.tags || " " ||
cardModels.name %s from cards, facts, models, cardModels where
cards.factId == facts.id and facts.modelId == models.id
and cards.cardModelId = cardModels.id %s""" % (priority, where))
def splitTagsList(self, where=""):
return self.s.all("""
select cards.id, facts.tags, models.tags, cardModels.name
from cards, facts, models, cardModels where
cards.factId == facts.id and facts.modelId == models.id
and cards.cardModelId = cardModels.id
%s""" % where)
def cardsWithNoTags(self):
return self.s.column0("""
select cards.id from cards, facts where
facts.tags = ""
and cards.factId = facts.id""")
def cardsWithTags(self, tagStr, search="and"):
tagIds = []
# get ids
for tag in tagStr.split(" "):
tag = tag.replace("*", "%")
if "%" in tag:
ids = self.s.column0(
"select id from tags where tag like :tag", tag=tag)
if search == "and" and not ids:
return []
tagIds.append(ids)
else:
id = self.s.scalar(
"select id from tags where tag = :tag", tag=tag)
if search == "and" and not id:
return []
tagIds.append(id)
# search for any
if search == "or":
return self.s.column0(
"select cardId from cardTags where tagId in %s" %
ids2str(tagIds))
else:
# search for all
l = []
for ids in tagIds:
if isinstance(ids, types.ListType):
l.append("select cardId from cardTags where tagId in %s" %
ids2str(ids))
else:
l.append("select cardId from cardTags where tagId = %d" %
ids)
q = " intersect ".join(l)
return self.s.column0(q)
def allTags(self):
return self.s.column0("select tag from tags order by tag")
def allTags_(self, where=""):
t = self.s.column0("select tags from facts %s" % where)
t += self.s.column0("select tags from models")
t += self.s.column0("select name from cardModels")
return sorted(list(set(parseTags(joinTags(t)))))
def allUserTags(self):
return sorted(list(set(parseTags(joinTags(self.s.column0(
"select tags from facts"))))))
def factTags(self, ids):
return self.s.all("""
select id, tags from facts
where id in %s""" % ids2str(ids))
# Tags: caching
##########################################################################
def updateFactTags(self, factIds):
self.updateCardTags(self.s.column0(
"select id from cards where factId in %s" %
ids2str(factIds)))
def updateModelTags(self, modelId):
self.updateCardTags(self.s.column0("""
select cards.id from cards, facts where
cards.factId = facts.id and
facts.modelId = :id""", id=modelId))
def updateCardTags(self, cardIds=None):
self.s.flush()
if cardIds is None:
self.s.statement("delete from cardTags")
self.s.statement("delete from tags")
tids = tagIds(self.s, self.allTags_())
rows = self.splitTagsList()
else:
self.s.statement("delete from cardTags where cardId in %s" %
ids2str(cardIds))
fids = ids2str(self.s.column0(
"select factId from cards where id in %s" %
ids2str(cardIds)))
tids = tagIds(self.s, self.allTags_(
where="where id in %s" % fids))
rows = self.splitTagsList(
where="and facts.id in %s" % fids)
d = []
for (id, fact, model, templ) in rows:
for tag in parseTags(fact):
d.append({"cardId": id,
"tagId": tids[tag.lower()],
"src": 0})
for tag in parseTags(model):
d.append({"cardId": id,
"tagId": tids[tag.lower()],
"src": 1})
for tag in parseTags(templ):
d.append({"cardId": id,
"tagId": tids[tag.lower()],
"src": 2})
if d:
self.s.statements("""
insert into cardTags
(cardId, tagId, src) values
(:cardId, :tagId, :src)""", d)
tags = self.s.column0("select id from tags")
unused = []
for t in tags:
if not self.s.scalar(
"select 1 from cardTags where tagId = :d limit 1",
d=t):
unused.append(t)
self.s.statement("""
delete from tags where id in %s and priority = 2""" % ids2str(unused))
def updateTagsForModel(self, model):
cards = self.s.all("""
select cards.id, cards.cardModelId from cards, facts where
facts.modelId = :m and cards.factId = facts.id""", m=model.id)
cardIds = [x[0] for x in cards]
factIds = self.s.column0("""
select facts.id from facts where
facts.modelId = :m""", m=model.id)
cmtags = " ".join([cm.name for cm in model.cardModels])
tids = tagIds(self.s, parseTags(model.tags) +
parseTags(cmtags))
self.s.statement("""
delete from cardTags where cardId in %s
and src in (1, 2)""" % ids2str(cardIds))
d = []
for tag in parseTags(model.tags):
for id in cardIds:
d.append({"cardId": id,
"tagId": tids[tag.lower()],
"src": 1})
cmtags = {}
for cm in model.cardModels:
cmtags[cm.id] = parseTags(cm.name)
for c in cards:
for tag in cmtags[c[1]]:
d.append({"cardId": c[0],
"tagId": tids[tag.lower()],
"src": 2})
if d:
self.s.statements("""
insert into cardTags
(cardId, tagId, src) values
(:cardId, :tagId, :src)""", d)
self.s.statement("""
delete from tags where id not in (select distinct tagId from cardTags)
and priority = 2
""")
# Tags: adding/removing in bulk
##########################################################################
# these could be optimized to use the tag cache in the future
def addTags(self, ids, tags):
self.startProgress()
tlist = self.factTags(ids)
newTags = parseTags(tags)
now = time.time()
pending = []
for (id, tags) in tlist:
oldTags = parseTags(tags)
tmpTags = list(set(oldTags + newTags))
if tmpTags != oldTags:
pending.append(
{'id': id, 'now': now, 'tags': " ".join(tmpTags)})
self.s.statements("""
update facts set
tags = :tags,
modified = :now
where id = :id""", pending)
factIds = [c['id'] for c in pending]
cardIds = self.s.column0(
"select id from cards where factId in %s" %
ids2str(factIds))
self.updateCardQACacheFromIds(factIds, type="facts")
self.updateCardTags(cardIds)
self.updatePriorities(cardIds)
self.flushMod()
self.finishProgress()
self.refresh()
def deleteTags(self, ids, tags):
self.startProgress()
tlist = self.factTags(ids)
newTags = parseTags(tags)
now = time.time()
pending = []
for (id, tags) in tlist:
oldTags = parseTags(tags)
tmpTags = oldTags[:]
for tag in newTags:
try:
tmpTags.remove(tag)
except ValueError:
pass
if tmpTags != oldTags:
pending.append(
{'id': id, 'now': now, 'tags': " ".join(tmpTags)})
self.s.statements("""
update facts set
tags = :tags,
modified = :now
where id = :id""", pending)
factIds = [c['id'] for c in pending]
cardIds = self.s.column0(
"select id from cards where factId in %s" %
ids2str(factIds))
self.updateCardQACacheFromIds(factIds, type="facts")
self.updateCardTags(cardIds)
self.updatePriorities(cardIds)
self.flushMod()
self.finishProgress()
self.refresh()
# Find
##########################################################################
def _parseQuery(self, query):
tokens = []
res = []
# break query into words or phrases
for match in re.findall('"(.+?)"|([^ "]+)', query):
tokens.append(match[0] or match[1])
for c, token in enumerate(tokens):
isNeg = token.startswith("-")
if isNeg:
token = token[1:]
if token.startswith("tag:"):
token = token[4:]
type = SEARCH_TAG
elif token.startswith("is:"):
token = token[3:].lower()
type = SEARCH_TYPE
elif token.startswith("fid:") and len(token) > 4:
dec = token[4:]
try:
int(dec)
token = token[4:]
except:
token = "0"
type = SEARCH_FID
else:
type = SEARCH_PHRASE
res.append((token, isNeg, type))
return res
def _findCards(self, query):
"Find facts matching QUERY."
tquery = ""
fquery = ""
qquery = ""
fidquery = ""
args = {}
for c, (token, isNeg, type) in enumerate(self._parseQuery(query)):
if type == SEARCH_TAG:
# a tag
if tquery:
if isNeg:
tquery += " except "
else:
tquery += " intersect "
elif isNeg:
tquery += "select id from cards except "
if token == "none":
tquery += """
select cards.id from cards, facts where facts.tags = ''
and cards.factId = facts.id """
else:
token = token.replace("*", "%")
ids = self.s.column0(
"select id from tags where tag like :tag", tag=token)
tquery += """
select cardId from cardTags where
cardTags.tagId in %s""" % ids2str(ids)
elif type == SEARCH_TYPE:
if qquery:
if isNeg:
qquery += " except "
else:
qquery += " intersect "
elif isNeg:
qquery += "select id from cards except "
if token in ("rev", "new", "failed"):
if token == "rev":
n = 1
elif token == "new":
n = 2
else:
n = 0
qquery += "select id from cards where type = %d" % n
elif token == "delayed":
qquery += ("select id from cards where "
"due < %d and isDue = 0 and "
"priority in (1,2,3,4)") % time.time()
elif token == "suspended":
qquery += ("select id from cards where "
"priority = -3")
elif token == "inactive":
qquery += ("select id from cards where "
"priority = 0")
else: # due
qquery += ("select id from cards where "
"type in (0,1) and isDue = 1")
elif type == SEARCH_FID:
if fidquery:
if isNeg:
fidquery += " except "
else:
fidquery += " intersect "
elif isNeg:
fidquery += "select id from cards except "
fidquery += "select id from cards where factId = %s" % token
else:
# a field
if fquery:
if isNeg:
fquery += " except "
else:
fquery += " intersect "
elif isNeg:
fquery += "select id from facts except "
token = token.replace("*", "%")
args["_ff_%d" % c] = "%"+token+"%"
q = "select factId from fields where value like :_ff_%d" % c
fquery += q
return (tquery, fquery, qquery, fidquery, args)
def findCardsWhere(self, query):
(tquery, fquery, qquery, fidquery, args) = self._findCards(query)
q = ""
x = []
if tquery:
x.append(" id in (%s)" % tquery)
if fquery:
x.append(" factId in (%s)" % fquery)
if qquery:
x.append(" id in (%s)" % qquery)
if fidquery:
x.append(" id in (%s)" % fidquery)
if x:
q += " and ".join(x)
return q, args
def findCards(self, query):
q, args = self.findCardsWhere(query)
query = "select id from cards"
if q:
query += " where " + q
return self.s.column0(query, **args)
# Find and replace
##########################################################################
def findReplace(self, factIds, src, dst, isRe=False, field=None):
"Find and replace fields in a fact."
# find
s = "select id, factId, value from fields where factId in %s"
if isRe:
isRe = re.compile(src)
else:
s += " and value like :v"
if field:
s += " and fieldModelId = :fmid"
rows = self.s.all(s % ids2str(factIds),
v="%"+src.replace("%", "%%")+"%",
fmid=field)
modded = []
if isRe:
modded = [
{'id': id, 'fid': fid, 'val': re.sub(isRe, dst, val)}
for (id, fid, val) in rows
if isRe.search(val)]
else:
modded = [
{'id': id, 'fid': fid, 'val': val.replace(src, dst)}
for (id, fid, val) in rows
if val.find(src) != -1]
# update
self.s.statements(
'update fields set value = :val where id = :id', modded)
self.updateCardQACacheFromIds([f['fid'] for f in modded],
type="facts")
return len(set([f['fid'] for f in modded]))
# Progress info
##########################################################################
def startProgress(self, max=0, min=0, title=None):
self.enableProgressHandler()
runHook("startProgress", max, min, title)
self.s.flush()
def updateProgress(self, label=None, value=None):
runHook("updateProgress", label, value)
def finishProgress(self):
runHook("updateProgress")
runHook("finishProgress")
self.disableProgressHandler()
def progressHandler(self):
if (time.time() - self.progressHandlerCalled) < 0.2:
return
self.progressHandlerCalled = time.time()
if self.progressHandlerEnabled:
runHook("dbProgress")
def enableProgressHandler(self):
self.progressHandlerEnabled = True
def disableProgressHandler(self):
self.progressHandlerEnabled = False
# File-related
##########################################################################
def name(self):
if not self.path:
return u"untitled"
n = os.path.splitext(os.path.basename(self.path))[0]
assert '/' not in n
assert '\\' not in n
return n
# Session handling
##########################################################################
def startSession(self):
self.lastSessionStart = self.sessionStartTime
self.sessionStartTime = time.time()
self.sessionStartReps = self.getStats()['dTotal']
def sessionLimitReached(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.getStats()['dTotal'] - self.sessionStartReps):
return True
return False
# Meta vars
##########################################################################
def getInt(self, key):
ret = self.s.scalar("select value from deckVars where key = :k",
k=key)
if ret is not None:
ret = int(ret)
return ret
def getBool(self, key):
ret = self.s.scalar("select value from deckVars where key = :k",
k=key)
if ret is not None:
ret = not not int(ret)
return ret
def setVar(self, key, value, mod=True):
if self.s.scalar("""
select value = :value from deckVars
where key = :key""", key=key, value=value):
return
# can't use insert or replace as it confuses the undo code
if self.s.scalar("select 1 from deckVars where key = :key", key=key):
self.s.statement("update deckVars set value=:value where key = :key",
key=key, value=value)
else:
self.s.statement("insert into deckVars (key, value) "
"values (:key, :value)", key=key, value=value)
if mod:
self.setModified()
# Failed card handling
##########################################################################
def setFailedCardPolicy(self, idx):
if idx == 5:
# custom
return
self.collapseTime = 0
self.failedCardMax = 0
if idx == 0:
d = 600
self.collapseTime = 1
self.failedCardMax = 20
elif idx == 1:
d = 0
elif idx == 2:
d = 600
elif idx == 3:
d = 28800
elif idx == 4:
d = 259200
self.delay0 = d
self.delay1 = d
def getFailedCardPolicy(self):
if self.delay0 != self.delay1:
return 5
d = self.delay0
if self.collapseTime == 1:
if d == 600 and self.failedCardMax == 20:
return 0
return 5
if d == 0:
return 1
elif d == 600:
return 2
elif d == 28800:
return 3
elif d == 259200:
return 4
return 5
# Media
##########################################################################
def mediaDir(self, create=False):
"Return the media directory if exists. None if couldn't create."
if self.path:
# file-backed
if self.forceMediaDir:
dir = self.forceMediaDir
else:
dir = re.sub("(?i)\.(anki)$", ".media", self.path)
if create == None:
# don't create, but return dir
return dir
if dir and not os.path.exists(dir) and create:
try:
os.mkdir(dir)
# change to the current dir
os.chdir(dir)
except OSError:
# permission denied
return None
else:
# memory-backed; need temp store
if not self.tmpMediaDir and create:
self.tmpMediaDir = tempfile.mkdtemp(prefix="anki")
dir = self.tmpMediaDir
if not dir or not os.path.exists(dir):
return None
return dir
def addMedia(self, path):
"""Add PATH to the media directory.
Return new path, relative to media dir."""
return anki.media.copyToMedia(self, path)
def renameMediaDir(self, oldPath):
"Copy oldPath to our current media dir. "
assert os.path.exists(oldPath)
newPath = self.mediaDir(create=None)
# copytree doesn't want the dir to exist
try:
shutil.copytree(oldPath, newPath)
except:
# FIXME: should really remove everything in old dir instead of
# giving up
pass
# DB helpers
##########################################################################
def save(self):
"Commit any pending changes to disk."
if self.lastLoaded == self.modified:
return
self.lastLoaded = self.modified
self.s.commit()
def close(self):
if self.s:
self.s.rollback()
self.s.clear()
self.s.close()
self.engine.dispose()
runHook("deckClosed")
def rollback(self):
"Roll back the current transaction and reset session state."
self.s.rollback()
self.s.clear()
self.s.update(self)
self.s.refresh(self)
def refresh(self):
"Flush and expire all items from the session."
self.s.flush()
self.s.expire_all()
def openSession(self):
"Open a new session. Assumes old session is already closed."
self.s = SessionHelper(self.Session(), lock=self.needLock)
self.s.update(self)
self.refresh()
def closeSession(self):
"Close the current session, saving any changes. Do nothing if no session."
if self.s:
self.save()
try:
self.s.expunge(self)
except:
import sys
sys.stderr.write("ERROR expunging deck..\n")
self.s.close()
self.s = None
def setModified(self, newTime=None):
self.modified = newTime or time.time()
def flushMod(self):
"Mark modified and flush to DB."
self.setModified()
self.s.flush()
def saveAs(self, newPath):
oldMediaDir = self.mediaDir()
self.s.flush()
# remove new deck if it exists
try:
os.unlink(newPath)
except OSError:
pass
# setup new db tables, then close
newDeck = DeckStorage.Deck(newPath)
newDeck.close()
# attach new db and copy everything in
s = self.s.statement
s("attach database :path as new", path=newPath)
s("delete from new.decks")
s("delete from new.stats")
s("delete from new.tags")
s("delete from new.cardTags")
s("delete from new.deckVars")
s("insert into new.decks select * from decks")
s("insert into new.fieldModels select * from fieldModels")
s("insert into new.modelsDeleted select * from modelsDeleted")
s("insert into new.cardModels select * from cardModels")
s("insert into new.facts select * from facts")
s("insert into new.fields select * from fields")
s("insert into new.cards select * from cards")
s("insert into new.factsDeleted select * from factsDeleted")
s("insert into new.reviewHistory select * from reviewHistory")
s("insert into new.cardsDeleted select * from cardsDeleted")
s("insert into new.models select * from models")
s("insert into new.stats select * from stats")
s("insert into new.media select * from media")
s("insert into new.tags select * from tags")
s("insert into new.cardTags select * from cardTags")
s("insert into new.deckVars select * from deckVars")
s("detach database new")
# close ourselves
self.s.commit()
self.close()
# open new db
newDeck = DeckStorage.Deck(newPath)
# move media
if oldMediaDir:
newDeck.renameMediaDir(oldMediaDir)
# and return the new deck object
return newDeck
# DB maintenance
##########################################################################
def fixIntegrity(self, quick=False):
"Responsibility of caller to call rebuildQueue()"
self.s.commit()
self.resetUndo()
problems = []
deletedCards = []
if quick:
num = 4
else:
num = 10
self.startProgress(num)
self.updateProgress(_("Checking integrity..."))
if self.s.scalar("pragma integrity_check") != "ok":
self.finishProgress()
return _("Database file is damaged.\n"
"Please restore from automatic backup (see FAQ).")
# ensure correct views and indexes are available
self.updateProgress()
DeckStorage._addViews(self)
DeckStorage._addIndices(self)
# does the user have a model?
self.updateProgress(_("Checking schema..."))
if not self.s.scalar("select count(id) from models"):
self.addModel(BasicModel())
problems.append(_("Deck was missing a model"))
# is currentModel pointing to a valid model?
if not self.s.all("""
select decks.id from decks, models where
decks.currentModelId = models.id"""):
self.currentModelId = self.models[0].id
problems.append(_("The current model didn't exist"))
# fields missing a field model
ids = self.s.column0("""
select id from fields where fieldModelId not in (
select distinct id from fieldModels)""")
if ids:
self.s.statement("delete from fields where id in %s" %
ids2str(ids))
problems.append(ngettext("Deleted %d field with missing field model",
"Deleted %d fields with missing field model", len(ids)) %
len(ids))
# facts missing a field?
ids = self.s.column0("""
select distinct facts.id from facts, fieldModels where
facts.modelId = fieldModels.modelId and fieldModels.id not in
(select fieldModelId from fields where factId = facts.id)""")
if ids:
self.deleteFacts(ids)
problems.append(ngettext("Deleted %d fact with missing fields",
"Deleted %d facts with missing fields", len(ids)) %
len(ids))
# cards missing a fact?
ids = self.s.column0("""
select id from cards where factId not in (select id from facts)""")
if ids:
deletedCards.extend(self.s.all(
"select question, answer from cards where id in %s" %
ids2str(ids)))
self.deleteCards(ids)
problems.append(ngettext("Deleted %d card with missing fact",
"Deleted %d cards with missing fact", len(ids)) %
len(ids))
# cards missing a card model?
ids = self.s.column0("""
select id from cards where cardModelId not in
(select id from cardModels)""")
if ids:
deletedCards.extend(self.s.all(
"select question, answer from cards where id in %s" %
ids2str(ids)))
self.deleteCards(ids)
problems.append(ngettext("Deleted %d card with no card template",
"Deleted %d cards with no card template", len(ids)) %
len(ids))
# facts missing a card?
ids = self.deleteDanglingFacts()
if ids:
problems.append(ngettext("Deleted %d fact with no cards",
"Deleted %d facts with no cards", len(ids)) %
len(ids))
# dangling fields?
ids = self.s.column0("""
select id from fields where factId not in (select id from facts)""")
if ids:
self.s.statement(
"delete from fields where id in %s" % ids2str(ids))
problems.append(ngettext("Deleted %d dangling field",
"Deleted %d dangling fields", len(ids)) %
len(ids))
for card in deletedCards:
problems.append(_("Deleted: ") + "%s %s" % tuple(card))
self.s.flush()
if not quick:
# fix problems with cards being scheduled when not due
self.updateProgress()
self.s.statement("update cards set isDue = 0")
# these sometimes end up null on upgrade
self.s.statement("update models set source = 0 where source is null")
self.s.statement(
"update cardModels set allowEmptyAnswer = 1, typeAnswer = '' "
"where allowEmptyAnswer is null or typeAnswer is null")
# fix tags
self.updateProgress(_("Rebuilding tag cache..."))
self.updateCardTags()
# fix any priorities
self.updateProgress(_("Updating priorities..."))
self.updateAllPriorities(dirty=False)
# make sure
self.updateProgress(_("Updating ordinals..."))
self.s.statement("""
update fields set ordinal = (select ordinal from fieldModels
where id = fieldModelId)""")
# fix problems with stripping html
self.updateProgress(_("Rebuilding QA cache..."))
fields = self.s.all("select id, value from fields")
newFields = []
for (id, value) in fields:
newFields.append({'id': id, 'value': tidyHTML(value)})
self.s.statements(
"update fields set value=:value where id=:id",
newFields)
# regenerate question/answer cache
for m in self.models:
self.updateCardsFromModel(m, dirty=False)
# force a full sync
self.s.flush()
self.s.statement("update cards set modified = :t", t=time.time())
self.s.statement("update facts set modified = :t", t=time.time())
self.s.statement("update models set modified = :t", t=time.time())
self.lastSync = 0
# rebuild
self.updateProgress(_("Rebuilding types..."))
self.rebuildTypes()
self.updateProgress(_("Rebuilding counts..."))
self.rebuildCounts()
# update deck and save
if not quick:
self.flushMod()
self.save()
self.refresh()
self.rebuildQueue()
self.finishProgress()
if problems:
return "\n".join(problems)
return "ok"
def optimize(self):
oldSize = os.stat(self.path)[stat.ST_SIZE]
self.s.commit()
self.s.statement("vacuum")
self.s.statement("analyze")
newSize = os.stat(self.path)[stat.ST_SIZE]
return oldSize - newSize
# Undo/redo
##########################################################################
def initUndo(self):
# note this code ignores 'unique', as it's an sqlite reserved word
self.undoStack = []
self.redoStack = []
self.undoEnabled = True
self.s.statement(
"create temporary table undoLog (seq integer primary key not null, sql text)")
tables = self.s.column0(
"select name from sqlite_master where type = 'table'")
for table in tables:
if table in ("undoLog", "sqlite_stat1"):
continue
columns = [r[1] for r in
self.s.all("pragma table_info(%s)" % table)]
# insert
self.s.statement("""
create temp trigger _undo_%(t)s_it
after insert on %(t)s begin
insert into undoLog values
(null, 'delete from %(t)s where rowid = ' || new.rowid); end""" % {'t': table})
# update
sql = """
create temp trigger _undo_%(t)s_ut
after update on %(t)s begin
insert into undoLog values (null, 'update %(t)s """ % {'t': table}
sep = "set "
for c in columns:
if c == "unique":
continue
sql += "%(s)s%(c)s=' || quote(old.%(c)s) || '" % {
's': sep, 'c': c}
sep = ","
sql += " where rowid = ' || old.rowid); end"
self.s.statement(sql)
# delete
sql = """
create temp trigger _undo_%(t)s_dt
before delete on %(t)s begin
insert into undoLog values (null, 'insert into %(t)s (rowid""" % {'t': table}
for c in columns:
sql += ",\"%s\"" % c
sql += ") values (' || old.rowid ||'"
for c in columns:
if c == "unique":
sql += ",1"
continue
sql += ",' || quote(old.%s) ||'" % c
sql += ")'); end"
self.s.statement(sql)
def undoName(self):
for n in reversed(self.undoStack):
if n:
return n[0]
def redoName(self):
return self.redoStack[-1][0]
def undoAvailable(self):
if not self.undoEnabled:
return
for r in reversed(self.undoStack):
if r:
return True
def redoAvailable(self):
return self.undoEnabled and self.redoStack
def resetUndo(self):
try:
self.s.statement("delete from undoLog")
except:
pass
self.undoStack = []
self.redoStack = []
def setUndoBarrier(self):
if not self.undoStack or self.undoStack[-1] is not None:
self.undoStack.append(None)
def setUndoStart(self, name, merge=False):
if not self.undoEnabled:
return
self.s.flush()
if merge and self.undoStack:
if self.undoStack[-1] and self.undoStack[-1][0] == name:
# merge with last entry?
return
start = self._latestUndoRow()
self.undoStack.append([name, start, None])
def setUndoEnd(self, name):
if not self.undoEnabled:
return
self.s.flush()
end = self._latestUndoRow()
while self.undoStack[-1] is None:
# strip off barrier
self.undoStack.pop()
self.undoStack[-1][2] = end
if self.undoStack[-1][1] == self.undoStack[-1][2]:
self.undoStack.pop()
else:
self.redoStack = []
def _latestUndoRow(self):
return self.s.scalar("select max(rowid) from undoLog") or 0
def _undoredo(self, src, dst):
self.s.flush()
while 1:
u = src.pop()
if u:
break
(start, end) = (u[1], u[2])
if end is None:
end = self._latestUndoRow()
sql = self.s.column0("""
select sql from undoLog where
seq > :s and seq <= :e order by seq desc""", s=start, e=end)
mod = len(sql) / 35
if mod:
self.startProgress(36)
self.updateProgress(_("Processing..."))
newstart = self._latestUndoRow()
for c, s in enumerate(sql):
if mod and not c % mod:
self.updateProgress()
self.engine.execute(s)
newend = self._latestUndoRow()
dst.append([u[0], newstart, newend])
if mod:
self.finishProgress()
def undo(self):
self._undoredo(self.undoStack, self.redoStack)
self.refresh()
self.rebuildCounts()
runHook("postUndoRedo")
def redo(self):
self._undoredo(self.redoStack, self.undoStack)
self.refresh()
self.rebuildCounts()
runHook("postUndoRedo")
# Dynamic indices
##########################################################################
def updateDynamicIndices(self):
indices = {
'intervalDesc':
'(type, isDue, priority desc, interval desc)',
'intervalAsc':
'(type, isDue, priority desc, interval)',
'randomOrder':
'(type, isDue, priority desc, factId, ordinal)',
'dueAsc':
'(type, isDue, priority desc, due)',
'dueDesc':
'(type, isDue, priority desc, due desc)',
}
# determine required
required = []
if self.revCardOrder == REV_CARDS_OLD_FIRST:
required.append("intervalDesc")
if self.revCardOrder == REV_CARDS_NEW_FIRST:
required.append("intervalAsc")
if self.revCardOrder == REV_CARDS_RANDOM:
required.append("randomOrder")
if (self.revCardOrder == REV_CARDS_DUE_FIRST or
self.newCardOrder == NEW_CARDS_OLD_FIRST or
self.newCardOrder == NEW_CARDS_RANDOM):
required.append("dueAsc")
if (self.newCardOrder == NEW_CARDS_NEW_FIRST):
required.append("dueDesc")
# add/delete
for (k, v) in indices.items():
if k in required:
self.s.statement(
"create index if not exists ix_cards_%s on cards %s" %
(k, v))
else:
self.s.statement("drop index if exists ix_cards_%s" % k)
# Shared decks
##########################################################################
sourcesTable = Table(
'sources', metadata,
Column('id', Integer, nullable=False, primary_key=True),
Column('name', UnicodeText, nullable=False, default=""),
Column('created', Float, nullable=False, default=time.time),
Column('lastSync', Float, nullable=False, default=0),
# -1 = never check, 0 = always check, 1+ = number of seconds passed.
# not currently exposed in the GUI
Column('syncPeriod', Integer, nullable=False, default=0))
# Maps
##########################################################################
mapper(Deck, decksTable, properties={
'currentModel': relation(anki.models.Model, primaryjoin=
decksTable.c.currentModelId ==
anki.models.modelsTable.c.id),
'models': relation(anki.models.Model, post_update=True,
primaryjoin=
decksTable.c.id ==
anki.models.modelsTable.c.deckId),
})
# Deck storage
##########################################################################
numBackups = 30
backupDir = os.path.expanduser("~/.anki/backups")
class DeckStorage(object):
def Deck(path=None, backup=True, lock=True, pool=True):
"Create a new deck or attach to an existing one."
create = True
if path is None:
sqlpath = None
else:
path = os.path.abspath(path)
# check if we need to init
if os.path.exists(path):
create = False
# sqlite needs utf8
sqlpath = path.encode("utf-8")
try:
(engine, session) = DeckStorage._attach(sqlpath, create, pool)
s = session()
metadata.create_all(engine)
if create:
ver = 999
deck = DeckStorage._init(s)
else:
ver = s.scalar("select version from decks limit 1")
if ver < 19:
for st in (
"decks add column newCardsPerDay integer not null default 20",
"decks add column sessionRepLimit integer not null default 100",
"decks add column sessionTimeLimit integer not null default 1800",
"decks add column utcOffset numeric(10, 2) not null default 0",
"decks add column cardCount integer not null default 0",
"decks add column factCount integer not null default 0",
"decks add column failedNowCount integer not null default 0",
"decks add column failedSoonCount integer not null default 0",
"decks add column revCount integer not null default 0",
"decks add column newCount integer not null default 0",
"decks add column revCardOrder integer not null default 0",
"cardModels add column allowEmptyAnswer boolean not null default 1",
"cardModels add column typeAnswer text not null default ''"):
try:
s.execute("alter table " + st)
except:
pass
deck = s.query(Deck).get(1)
if not deck:
raise DeckAccessError(_("Deck missing core table"),
type="nocore")
# attach db vars
deck.path = path
deck.engine = engine
deck.Session = session
deck.needLock = lock
deck.progressHandlerCalled = 0
deck.progressHandlerEnabled = False
if pool:
try:
deck.engine.raw_connection().set_progress_handler(
deck.progressHandler, 100)
except:
print "please install pysqlite 2.4 for better progress dialogs"
deck.engine.execute("pragma locking_mode = exclusive")
deck.s = SessionHelper(s, lock=lock)
# force a write lock
deck.s.execute("update decks set modified = modified")
if ver < 27:
initTagTables(deck.s)
if create:
# new-style file format
deck.s.commit()
deck.s.execute("pragma legacy_file_format = off")
deck.s.execute("pragma default_cache_size= 20000")
deck.s.execute("vacuum")
# add views/indices
initTagTables(deck.s)
DeckStorage._addViews(deck)
DeckStorage._addIndices(deck)
deck.s.statement("analyze")
deck._initVars()
deck.updateTagPriorities()
# leech control in deck
deck.setVar("suspendLeeches", True)
deck.setVar("leechFails", 16)
else:
if backup:
DeckStorage.backup(deck, path)
deck._initVars()
try:
deck = DeckStorage._upgradeDeck(deck, path)
except:
traceback.print_exc()
deck.fixIntegrity()
deck = DeckStorage._upgradeDeck(deck, path)
except OperationalError, e:
engine.dispose()
if (str(e.orig).startswith("database table is locked") or
str(e.orig).startswith("database is locked")):
raise DeckAccessError(_("File is in use by another process"),
type="inuse")
else:
raise e
if deck.utcOffset == -1:
# needs a reset
deck.startProgress()
DeckStorage._setUTCOffset(deck)
DeckStorage._addIndices(deck)
for m in deck.models:
deck.updateCardsFromModel(m)
deck.created = time.time()
deck.finishProgress()
# fix a bug with current model being unset
if not deck.currentModel and deck.models:
deck.currentModel = deck.models[0]
# ensure the necessary indices are available
deck.updateDynamicIndices()
# save counts to determine if we should save deck after check
oldc = deck.failedSoonCount + deck.revCount + deck.newCount
# update counts
deck.rebuildQueue()
# unsuspend reviewed early & buried
ids = deck.s.column0(
"select id from cards where type in (0,1,2) and isDue = 0 and "
"priority in (-1, -2)")
if ids:
deck.updatePriorities(ids)
deck.checkDue()
if ((oldc != deck.failedSoonCount + deck.revCount + deck.newCount) or
deck.modifiedSinceSave()):
deck.s.commit()
return deck
Deck = staticmethod(Deck)
def _attach(path, create, pool=True):
"Attach to a file, initializing DB"
if path is None:
path = "sqlite://"
else:
path = "sqlite:///" + path
if pool:
# open and lock connection for single use
engine = create_engine(path, connect_args={'timeout': 0},
strategy="threadlocal")
else:
# no pool & concurrent access w/ timeout
engine = create_engine(path,
poolclass=NullPool,
connect_args={'timeout': 60})
session = sessionmaker(bind=engine,
autoflush=False,
autocommit=True)
return (engine, session)
_attach = staticmethod(_attach)
def _init(s):
"Add a new deck to the database. Return saved deck."
deck = Deck()
s.save(deck)
s.flush()
return deck
_init = staticmethod(_init)
def _addIndices(deck):
"Add indices to the DB."
# failed cards, review early
deck.s.statement("""
create index if not exists ix_cards_duePriority on cards
(type, isDue, combinedDue, priority)""")
# check due
deck.s.statement("""
create index if not exists ix_cards_priorityDue on cards
(type, isDue, priority, combinedDue)""")
# average factor
deck.s.statement("""
create index if not exists ix_cards_factor on cards
(type, factor)""")
# card spacing
deck.s.statement("""
create index if not exists ix_cards_factId on cards (factId, type)""")
# stats
deck.s.statement("""
create index if not exists ix_stats_typeDay on stats (type, day)""")
# fields
deck.s.statement("""
create index if not exists ix_fields_factId on fields (factId)""")
deck.s.statement("""
create index if not exists ix_fields_fieldModelId on fields (fieldModelId)""")
deck.s.statement("""
create index if not exists ix_fields_value on fields (value)""")
# media
deck.s.statement("""
create unique index if not exists ix_media_filename on media (filename)""")
deck.s.statement("""
create index if not exists ix_media_originalPath on media (originalPath)""")
# deletion tracking
deck.s.statement("""
create index if not exists ix_cardsDeleted_cardId on cardsDeleted (cardId)""")
deck.s.statement("""
create index if not exists ix_modelsDeleted_modelId on modelsDeleted (modelId)""")
deck.s.statement("""
create index if not exists ix_factsDeleted_factId on factsDeleted (factId)""")
deck.s.statement("""
create index if not exists ix_mediaDeleted_factId on mediaDeleted (mediaId)""")
# tags
deck.s.statement("""
create unique index if not exists ix_tags_tag on tags (tag)""")
deck.s.statement("""
create index if not exists ix_cardTags_tagCard on cardTags (tagId, cardId)""")
deck.s.statement("""
create index if not exists ix_cardTags_cardId on cardTags (cardId)""")
_addIndices = staticmethod(_addIndices)
def _addViews(deck):
"Add latest version of SQL views to DB."
s = deck.s
# old views
s.statement("drop view if exists failedCards")
s.statement("drop view if exists revCardsOld")
s.statement("drop view if exists revCardsNew")
s.statement("drop view if exists revCardsDue")
s.statement("drop view if exists revCardsRandom")
s.statement("drop view if exists acqCardsRandom")
s.statement("drop view if exists acqCardsOld")
s.statement("drop view if exists acqCardsNew")
# failed cards
s.statement("""
create view failedCards as
select * from cards
where type = 0 and isDue = 1
order by type, isDue, combinedDue
""")
# rev cards
s.statement("""
create view revCardsOld as
select * from cards
where type = 1 and isDue = 1
order by priority desc, interval desc""")
s.statement("""
create view revCardsNew as
select * from cards
where type = 1 and isDue = 1
order by priority desc, interval""")
s.statement("""
create view revCardsDue as
select * from cards
where type = 1 and isDue = 1
order by priority desc, due""")
s.statement("""
create view revCardsRandom as
select * from cards
where type = 1 and isDue = 1
order by priority desc, factId, ordinal""")
# new cards
s.statement("""
create view acqCardsOld as
select * from cards
where type = 2 and isDue = 1
order by priority desc, due""")
s.statement("""
create view acqCardsNew as
select * from cards
where type = 2 and isDue = 1
order by priority desc, due desc""")
_addViews = staticmethod(_addViews)
def _upgradeDeck(deck, path):
"Upgrade deck to the latest version."
if deck.version < DECK_VERSION:
prog = True
deck.startProgress()
deck.updateProgress(_("Upgrading Deck..."))
if deck.utcOffset == -1:
# we're opening a shared deck with no indices - we'll need
# them if we want to rebuild the queue
DeckStorage._addIndices(deck)
else:
prog = False
deck.path = path
if deck.version == 0:
# new columns
try:
deck.s.statement("""
alter table cards add column spaceUntil float not null default 0""")
deck.s.statement("""
alter table cards add column relativeDelay float not null default 0.0""")
deck.s.statement("""
alter table cards add column isDue boolean not null default 0""")
deck.s.statement("""
alter table cards add column type integer not null default 0""")
deck.s.statement("""
alter table cards add column combinedDue float not null default 0""")
# update cards.spaceUntil based on old facts
deck.s.statement("""
update cards
set spaceUntil = (select (case
when cards.id = facts.lastCardId
then 0
else facts.spaceUntil
end) from cards as c, facts
where c.factId = facts.id
and cards.id = c.id)""")
deck.s.statement("""
update cards
set combinedDue = max(due, spaceUntil)
""")
except:
print "failed to upgrade"
# rebuild with new file format
deck.s.commit()
deck.s.execute("pragma legacy_file_format = off")
deck.s.execute("vacuum")
# add views/indices
DeckStorage._addViews(deck)
DeckStorage._addIndices(deck)
# rebuild type and delay cache
deck.rebuildTypes()
deck.rebuildQueue()
# bump version
deck.version = 1
# optimize indices
deck.s.statement("analyze")
if deck.version == 1:
# fix indexes and views
deck.s.statement("drop index if exists ix_cards_newRandomOrder")
deck.s.statement("drop index if exists ix_cards_newOrderedOrder")
DeckStorage._addViews(deck)
DeckStorage._addIndices(deck)
deck.rebuildTypes()
# optimize indices
deck.s.statement("analyze")
deck.version = 2
if deck.version == 2:
# compensate for bug in 0.9.7 by rebuilding isDue and priorities
deck.s.statement("update cards set isDue = 0")
deck.updateAllPriorities(dirty=False)
# compensate for bug in early 0.9.x where fieldId was not unique
deck.s.statement("update fields set id = random()")
deck.version = 3
if deck.version == 3:
# remove conflicting and unused indexes
deck.s.statement("drop index if exists ix_cards_isDueCombined")
deck.s.statement("drop index if exists ix_facts_lastCardId")
deck.s.statement("drop index if exists ix_cards_successive")
deck.s.statement("drop index if exists ix_cards_priority")
deck.s.statement("drop index if exists ix_cards_reps")
deck.s.statement("drop index if exists ix_cards_due")
deck.s.statement("drop index if exists ix_stats_type")
deck.s.statement("drop index if exists ix_stats_day")
deck.s.statement("drop index if exists ix_factsDeleted_cardId")
deck.s.statement("drop index if exists ix_modelsDeleted_cardId")
DeckStorage._addIndices(deck)
deck.s.statement("analyze")
deck.version = 4
if deck.version == 4:
# decks field upgraded earlier
deck.version = 5
if deck.version == 5:
# new spacing
deck.newCardSpacing = NEW_CARDS_DISTRIBUTE
deck.version = 6
# low priority cards now stay in same queue
deck.rebuildTypes()
if deck.version == 6:
# removed 'new cards first' option, so order has changed
deck.newCardSpacing = NEW_CARDS_DISTRIBUTE
deck.version = 7
# <version 7->8 upgrade code removed as obsolete>
if deck.version < 9:
# back up the media dir again, just in case
shutil.copytree(deck.mediaDir(create=True),
deck.mediaDir() + "-old-%s" %
hash(time.time()))
# backup media
media = deck.s.all("""
select filename, size, created, originalPath, description from media""")
# fix mediaDeleted definition
deck.s.execute("drop table mediaDeleted")
deck.s.execute("drop table media")
metadata.create_all(deck.engine)
# restore
h = []
for row in media:
h.append({
'id': genID(),
'filename': row[0],
'size': row[1],
'created': row[2],
'originalPath': row[3],
'description': row[4]})
if h:
deck.s.statements("""
insert into media values (
:id, :filename, :size, :created, :originalPath, :description)""", h)
# rerun check
anki.media.rebuildMediaDir(deck, dirty=False)
# no need to track deleted media yet
deck.s.execute("delete from mediaDeleted")
deck.version = 9
if deck.version < 10:
deck.s.statement("""
alter table models add column source integer not null default 0""")
deck.version = 10
if deck.version < 11:
DeckStorage._setUTCOffset(deck)
deck.version = 11
deck.s.commit()
if deck.version < 12:
deck.s.statement("drop index if exists ix_cards_revisionOrder")
deck.s.statement("drop index if exists ix_cards_newRandomOrder")
deck.s.statement("drop index if exists ix_cards_newOrderedOrder")
deck.s.statement("drop index if exists ix_cards_markExpired")
deck.s.statement("drop index if exists ix_cards_failedIsDue")
deck.s.statement("drop index if exists ix_cards_failedOrder")
deck.s.statement("drop index if exists ix_cards_type")
deck.s.statement("drop index if exists ix_cards_priority")
DeckStorage._addViews(deck)
DeckStorage._addIndices(deck)
deck.s.statement("analyze")
if deck.version < 13:
deck.rebuildQueue()
deck.rebuildCounts()
# regenerate question/answer cache
for m in deck.models:
deck.updateCardsFromModel(m, dirty=False)
deck.version = 13
if deck.version < 14:
deck.s.statement("""
update cards set interval = 0
where interval < 1""")
deck.version = 14
if deck.version < 15:
deck.delay1 = deck.delay0
deck.delay2 = 0.0
deck.version = 15
if deck.version < 16:
deck.version = 16
if deck.version < 17:
deck.s.statement("drop view if exists acqCards")
deck.s.statement("drop view if exists futureCards")
deck.s.statement("drop view if exists revCards")
deck.s.statement("drop view if exists typedCards")
deck.s.statement("drop view if exists failedCardsNow")
deck.s.statement("drop view if exists failedCardsSoon")
deck.s.statement("drop index if exists ix_cards_revisionOrder")
deck.s.statement("drop index if exists ix_cards_newRandomOrder")
deck.s.statement("drop index if exists ix_cards_newOrderedOrder")
deck.s.statement("drop index if exists ix_cards_combinedDue")
# add new views
DeckStorage._addViews(deck)
DeckStorage._addIndices(deck)
deck.version = 17
if deck.version < 18:
deck.s.statement(
"create table undoLog (seq integer primary key, sql text)")
deck.version = 18
deck.s.commit()
DeckStorage._addIndices(deck)
deck.s.statement("analyze")
if deck.version < 19:
# permanent undo log causes various problems, revert to temp
deck.s.statement("drop table undoLog")
deck.sessionTimeLimit = 600
deck.sessionRepLimit = 0
deck.version = 19
deck.s.commit()
if deck.version < 20:
DeckStorage._addViews(deck)
DeckStorage._addIndices(deck)
deck.version = 20
deck.s.commit()
if deck.version < 21:
deck.s.statement("vacuum")
deck.s.statement("analyze")
deck.version = 21
deck.s.commit()
if deck.version < 22:
deck.s.statement(
'update cardModels set typeAnswer = ""')
deck.version = 22
deck.s.commit()
if deck.version < 23:
try:
deck.s.execute("drop table undoLog")
except:
pass
deck.version = 23
deck.s.commit()
if deck.version < 24:
deck.s.statement(
"update cardModels set lastFontColour = '#ffffff'")
deck.version = 24
deck.s.commit()
if deck.version < 25:
deck.s.statement("drop index if exists ix_cards_priorityDue")
deck.s.statement("drop index if exists ix_cards_priorityDueReal")
DeckStorage._addViews(deck)
DeckStorage._addIndices(deck)
deck.updateDynamicIndices()
deck.version = 25
deck.s.commit()
if deck.version < 26:
# no spaces in tags anymore, as separated by space
def munge(tags):
tags = re.sub(", ?", "--tmp--", tags)
tags = re.sub(" - ", "-", tags)
tags = re.sub(" ", "-", tags)
tags = re.sub("--tmp--", " ", tags)
tags = canonifyTags(tags)
return tags
rows = deck.s.all('select id, tags from facts')
d = []
for (id, tags) in rows:
d.append({
'i': id,
't': munge(tags),
})
deck.s.statements(
"update facts set tags = :t where id = :i", d)
for k in ('highPriority', 'medPriority',
'lowPriority', 'suspended'):
x = getattr(deck, k)
setattr(deck, k, munge(x))
for m in deck.models:
for cm in m.cardModels:
cm.name = munge(cm.name)
m.tags = munge(m.tags)
deck.updateCardsFromModel(m, dirty=False)
deck.version = 26
deck.s.commit()
deck.s.statement("vacuum")
if deck.version < 27:
DeckStorage._addIndices(deck)
deck.updateCardTags()
deck.updateAllPriorities(dirty=False)
deck.version = 27
deck.s.commit()
if deck.version < 28:
deck.s.statement("pragma default_cache_size= 20000")
deck.version = 28
deck.s.commit()
if deck.version < 30:
# remove duplicates from review history
deck.s.statement("""
delete from reviewHistory where id not in (
select min(id) from reviewHistory group by cardId, time);""")
deck.version = 30
deck.s.commit()
if deck.version < 31:
# recreate review history table
deck.s.statement("drop index if exists ix_reviewHistory_unique")
schema = """
CREATE TABLE %s (
cardId INTEGER NOT NULL,
time NUMERIC(10, 2) NOT NULL,
lastInterval NUMERIC(10, 2) NOT NULL,
nextInterval NUMERIC(10, 2) NOT NULL,
ease INTEGER NOT NULL,
delay NUMERIC(10, 2) NOT NULL,
lastFactor NUMERIC(10, 2) NOT NULL,
nextFactor NUMERIC(10, 2) NOT NULL,
reps NUMERIC(10, 2) NOT NULL,
thinkingTime NUMERIC(10, 2) NOT NULL,
yesCount NUMERIC(10, 2) NOT NULL,
noCount NUMERIC(10, 2) NOT NULL,
PRIMARY KEY (cardId, time))"""
deck.s.statement(schema % "revtmp")
deck.s.statement("""
insert into revtmp
select cardId, time, lastInterval, nextInterval, ease, delay, lastFactor,
nextFactor, reps, thinkingTime, yesCount, noCount from reviewHistory""")
deck.s.statement("drop table reviewHistory")
metadata.create_all(deck.engine)
deck.s.statement(
"insert into reviewHistory select * from revtmp")
deck.s.statement("drop table revtmp")
deck.version = 31
deck.s.commit()
deck.s.statement("vacuum")
if deck.version < 32:
deck.s.execute("drop index if exists ix_cardTags_tagId")
deck.s.execute("drop index if exists ix_cardTags_cardId")
DeckStorage._addIndices(deck)
deck.s.execute("analyze")
deck.version = 32
deck.s.commit()
if deck.version < 33:
deck.s.execute("drop index if exists ix_tags_tag")
DeckStorage._addIndices(deck)
deck.version = 33
deck.s.commit()
if deck.version < 34:
deck.s.execute("drop view if exists acqCardsRandom")
deck.s.execute("drop index if exists ix_cards_factId")
DeckStorage._addIndices(deck)
deck.updateDynamicIndices()
deck.version = 34
deck.s.commit()
if deck.version < 36:
deck.s.statement("drop index if exists ix_cards_priorityDue")
DeckStorage._addIndices(deck)
deck.s.execute("analyze")
deck.version = 36
deck.s.commit()
if deck.version < 37:
if deck.getFailedCardPolicy() == 1:
deck.failedCardMax = 0
deck.version = 37
deck.s.commit()
# skip 38
if deck.version < 39:
deck.rebuildQueue()
# manually suspend all suspended cards
ids = deck.findCards("tag:suspended")
if ids:
# unrolled from suspendCards() to avoid marking dirty
deck.s.statement(
"update cards set isDue=0, priority=-3 "
"where id in %s" % ids2str(ids))
deck.rebuildCounts(full=False)
# suspended tag obsolete - don't do this yet
deck.suspended = re.sub(u" ?Suspended ?", u"", deck.suspended)
deck.updateTagPriorities()
deck.version = 39
deck.s.commit()
if deck.version < 40:
# now stores media url
deck.s.statement("update models set features = ''")
deck.version = 40
deck.s.commit()
# skip 41
if deck.version < 42:
# leech control in deck
if deck.getBool("suspendLeeches") is None:
deck.setVar("suspendLeeches", True, mod=False)
deck.setVar("leechFails", 16, mod=False)
deck.version = 42
deck.s.commit()
if deck.version < 43:
deck.s.statement("update fieldModels set features = ''")
deck.version = 43
deck.s.commit()
# executing a pragma here is very slow on large decks, so we store
# our own record
if not deck.getInt("pageSize") == 4096:
deck.s.commit()
deck.s.execute("pragma page_size = 4096")
deck.s.execute("pragma legacy_file_format = 0")
deck.s.execute("vacuum")
deck.setVar("pageSize", 4096, mod=False)
deck.s.commit()
if prog:
deck.finishProgress()
return deck
_upgradeDeck = staticmethod(_upgradeDeck)
def _setUTCOffset(deck):
# 4am
deck.utcOffset = time.timezone + 60*60*4
_setUTCOffset = staticmethod(_setUTCOffset)
def backup(deck, path):
"""Path must not be unicode."""
if not numBackups:
return
# check integrity
if not deck.s.scalar("pragma integrity_check") == "ok":
raise DeckAccessError(_("Deck is corrupt."), type="corrupt")
def escape(path):
path = os.path.abspath(path)
path = path.replace("\\", "!")
path = path.replace("/", "!")
path = path.replace(":", "")
return path
escp = escape(path)
# find existing backups
gen = re.sub("\.anki$", ".backup-(\d+).anki", re.escape(escp))
backups = []
for file in os.listdir(backupDir):
m = re.match(gen, file)
if m:
backups.append((int(m.group(1)), file))
backups.sort()
# check if last backup is the same
if backups:
latest = os.path.join(backupDir, backups[-1][1])
if int(deck.modified) == int(
os.stat(latest)[stat.ST_MTIME]):
return
# get next num
if not backups:
n = 1
else:
n = backups[-1][0] + 1
# do backup
newpath = os.path.join(backupDir, os.path.basename(
re.sub("\.anki$", ".backup-%s.anki" % n, escp)))
shutil.copy2(path, newpath)
# set mtimes to be identical
os.utime(newpath, (deck.modified, deck.modified))
# remove if over
if len(backups) + 1 > numBackups:
delete = len(backups) + 1 - numBackups
delete = backups[:delete]
for file in delete:
os.unlink(os.path.join(backupDir, file[1]))
backup = staticmethod(backup)
def newCardOrderLabels():
return {
0: _("Show new cards in random order"),
1: _("Show new cards in order added"),
2: _("Show new cards in reverse order added"),
}
def newCardSchedulingLabels():
return {
0: _("Spread new cards out through reviews"),
1: _("Show new cards after all other cards"),
2: _("Show new cards before reviews"),
}
def revCardOrderLabels():
return {
0: _("Review cards from largest interval"),
1: _("Review cards from smallest interval"),
2: _("Review cards in order due"),
3: _("Review cards in random order"),
}
def failedCardOptionLabels():
return {
0: _("Show failed cards soon"),
1: _("Show failed cards at end"),
2: _("Show failed cards in 10 minutes"),
3: _("Show failed cards in 8 hours"),
4: _("Show failed cards in 3 days"),
5: _("Custom failed cards handling"),
}
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