add a field cache for searching without html

anki/deck.py

@@ -56,7 +56,7 @@ SEARCH_TAG = 0
 SEARCH_TYPE = 1
 SEARCH_PHRASE = 2
 SEARCH_FID = 3
-DECK_VERSION = 47
+DECK_VERSION = 48
 
 deckVarsTable = Table(
     'deckVars', metadata,
@@ -1829,13 +1829,28 @@ order by fields.factId""" % ids2str([x[2] for x in ids])),
         pend = [formatQA(cid, mid, facts[fid], tags[cid], cms[cmid])
                 for (cid, cmid, fid, mid) in ids]
         if pend:
+            # update q/a
             self.s.execute("""
     update cards set
     question = :question, answer = :answer
     %s
     where id = :id""" % mod, pend)
+            # update fields cache
+            self.updateFieldCache(facts.keys())
         self.flushMod()
 
+    def updateFieldCache(self, fids):
+        "Add stripped HTML cache for sorting/searching."
+        all = self.s.all(
+            ("select factId, group_concat(value, ' ') from fields "
+             "where factId in %s group by factId") % ids2str(fids))
+        r = []
+        from anki.utils import stripHTMLMedia
+        for a in all:
+            r.append({'id':a[0], 'v':stripHTMLMedia(a[1])})
+        self.s.statements(
+            "update facts set spaceUntil=:v where id=:id", r)
+
     def rebuildCardOrdinals(self, ids):
         "Update all card models in IDS. Caller must update model modtime."
         self.s.flush()
@@ -3604,6 +3619,10 @@ nextFactor, reps, thinkingTime, yesCount, noCount from reviewHistory""")
             deck.s.execute("analyze")
             deck.version = 47
             deck.s.commit()
+        if deck.version < 48:
+            deck.updateFieldCache(deck.s.column0("select id from facts"))
+            deck.version = 48
+            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:

anki/facts.py

@@ -12,7 +12,7 @@ import time
 from anki.db import *
 from anki.errors import *
 from anki.models import Model, FieldModel, fieldModelsTable, formatQA
-from anki.utils import genID
+from anki.utils import genID, stripHTMLMedia
 from anki.hooks import runHook
 
 # Fields in a fact
@@ -56,8 +56,9 @@ factsTable = Table(
     Column('created', Float, nullable=False, default=time.time),
     Column('modified', Float, nullable=False, default=time.time),
     Column('tags', UnicodeText, nullable=False, default=u""),
-    # the following two fields are obsolete and now stored in cards table
-    Column('spaceUntil', Float, nullable=False, default=0),
+    # spaceUntil is reused as a html-stripped cache of the fields
+    Column('spaceUntil', UnicodeText, nullable=False, default=u""),
+    # obsolete
     Column('lastCardId', Integer, ForeignKey(
     "cards.id", use_alter=True, name="lastCardIdfk")))
 
@@ -135,6 +136,7 @@ class Fact(object):
             d = {}
             for f in self.model.fieldModels:
                 d[f.name] = (f.id, self[f.name])
+            self.spaceUntil = stripHTMLMedia(u" ".join([x[1] for x in d.values()]))
             for card in self.cards:
                 qa = formatQA(None, self.modelId, d, card.splitTags(), card.cardModel)
                 card.question = qa['question']

anki/utils.py

@@ -128,11 +128,17 @@ def fmtFloat(float_value, point=1):
 
 def stripHTML(s):
     s = re.sub("(?s)<style.*?>.*?</style>", "", s)
+    s = re.sub("(?s)<script.*?>.*?</script>", "", s)
     s = re.sub("<.*?>", "", s)
     s = s.replace("&lt;", "<")
     s = s.replace("&gt;", ">")
     return s
 
+def stripHTMLMedia(s):
+    "Strip HTML but keep media filenames"
+    s = re.sub("<img src=[\"']?([^\"'>]+)[\"']? ?/?>", " \\1 ", s)
+    return stripHTML(s)
+
 def tidyHTML(html):
     "Remove cruft like body tags and return just the important part."
     # contents of body - no head or html tags