vcs.maemo.org Git - feedingit/blob - src/rss_sqlite.py

   1 #!/usr/bin/env python2.5
   2
   3 #
   4 # Copyright (c) 2007-2008 INdT.
   5 # Copyright (c) 2011 Neal H. Walfield
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU Lesser General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 #  This program is distributed in the hope that it will be useful,
  12 #  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 #  GNU Lesser General Public License for more details.
  15 #
  16 #  You should have received a copy of the GNU Lesser General Public License
  17 #  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 #
  19
  20 # ============================================================================
  21 # Name        : FeedingIt.py
  22 # Author      : Yves Marcoz
  23 # Version     : 0.5.4
  24 # Description : Simple RSS Reader
  25 # ============================================================================
  26
  27 from __future__ import with_statement
  28
  29 import sqlite3
  30 from os.path import isfile, isdir
  31 from shutil import rmtree
  32 from os import mkdir, remove, utime
  33 import os
  34 import md5
  35 import feedparser
  36 import time
  37 import urllib2
  38 from BeautifulSoup import BeautifulSoup
  39 from urlparse import urljoin
  40 from calendar import timegm
  41 import threading
  42 import traceback
  43 from wc import wc, wc_init, woodchuck
  44 import subprocess
  45 import dbus
  46 from updatedbus import update_server_object
  47
  48 from jobmanager import JobManager
  49 import mainthread
  50 from httpprogresshandler import HTTPProgressHandler
  51 import random
  52 import sys
  53 import logging
  54 logger = logging.getLogger(__name__)
  55
  56 def getId(string):
  57     return md5.new(string).hexdigest()
  58
  59 def download_callback(connection):
  60     if JobManager().do_quit:
  61         raise KeyboardInterrupt
  62
  63 def downloader(progress_handler=None, proxy=None):
  64     openers = []
  65
  66     if progress_handler is not None:
  67         openers.append(progress_handler)
  68     else:
  69         openers.append(HTTPProgressHandler(download_callback))
  70
  71     if proxy:
  72         openers.append(proxy)
  73
  74     return urllib2.build_opener(*openers)
  75
  76 def transfer_stats(sent, received, **kwargs):
  77     """
  78     This function takes two arguments: sent is the number of bytes
  79     sent so far, received is the number of bytes received.  The
  80     function returns a continuation that you can call later.
  81
  82     The continuation takes the same two arguments.  It returns a tuple
  83     of the number of bytes sent, the number of bytes received and the
  84     time since the original function was invoked.
  85     """
  86     start_time = time.time()
  87     start_sent = sent
  88     start_received = received
  89
  90     def e(sent, received, **kwargs):
  91         return (sent - start_sent,
  92                 received - start_received,
  93                 time.time() - start_time)
  94
  95     return e
  96
  97 # If not None, a subprocess.Popen object corresponding to a
  98 # update_feeds.py process.
  99 update_feed_process = None
 100
 101 update_feeds_iface = None
 102
 103 jobs_at_start = 0
 104
 105 class BaseObject(object):
 106     # Columns to cache.  Classes that inherit from this and use the
 107     # cache mechanism should set this to a list of tuples, each of
 108     # which contains two entries: the table and the column.  Note that
 109     # both are case sensitive.
 110     cached_columns = ()
 111
 112     def cache_invalidate(self, table=None):
 113         """
 114         Invalidate the cache.
 115
 116         If table is not None, invalidate only the specified table.
 117         Otherwise, drop the whole cache.
 118         """
 119         if not hasattr(self, 'cache'):
 120             return
 121
 122         if table is None:
 123             del self.cache
 124         else:
 125             if table in self.cache:
 126                 del self.cache[table]
 127
 128     def lookup(self, table, column, id=None):
 129         """
 130         Look up a column or value.  Uses a cache for columns in
 131         cached_columns.  Note: the column is returned unsorted.
 132         """
 133         if not hasattr(self, 'cache'):
 134             self.cache = {}
 135
 136         # Cache data for at most 60 seconds.
 137         now = time.time()
 138         try:
 139             cache = self.cache[table]
 140
 141             if time.time() - cache[None] > 60:
 142                 # logger.debug("%s: Cache too old: clearing" % (table,))
 143                 del self.cache[table]
 144                 cache = None
 145         except KeyError:
 146             cache = None
 147
 148         if (cache is None
 149             or (table, column) not in self.cached_columns):
 150             # The cache is empty or the caller wants a column that we
 151             # don't cache.
 152             if (table, column) in self.cached_columns:
 153                 # logger.debug("%s: Rebuilding cache" % (table,))
 154
 155                 do_cache = True
 156
 157                 self.cache[table] = cache = {}
 158                 columns = []
 159                 for t, c in self.cached_columns:
 160                     if table == t:
 161                         cache[c] = {}
 162                         columns.append(c)
 163
 164                 columns.append('id')
 165                 where = ""
 166             else:
 167                 do_cache = False
 168
 169                 columns = (colums,)
 170                 if id is not None:
 171                     where = "where id = '%s'" % id
 172                 else:
 173                     where = ""
 174
 175             results = self.db.execute(
 176                 "SELECT %s FROM %s %s" % (','.join(columns), table, where))
 177
 178             if do_cache:
 179                 for r in results:
 180                     values = list(r)
 181                     i = values.pop()
 182                     for index, value in enumerate(values):
 183                         cache[columns[index]][i] = value
 184
 185                 cache[None] = now
 186             else:
 187                 results = []
 188                 for r in results:
 189                     if id is not None:
 190                         return values[0]
 191
 192                     results.append(values[0])
 193
 194                 return results
 195         else:
 196             cache = self.cache[table]
 197
 198         try:
 199             if id is not None:
 200                 value = cache[column][id]
 201                 # logger.debug("%s.%s:%s -> %s" % (table, column, id, value))
 202                 return value
 203             else:
 204                 return cache[column].values()
 205         except KeyError:
 206             # logger.debug("%s.%s:%s -> Not found" % (table, column, id))
 207             return None
 208
 209 class Feed(BaseObject):
 210     # Columns to cache.
 211     cached_columns = (('feed', 'read'),
 212                       ('feed', 'title'))
 213
 214     serial_execution_lock = threading.Lock()
 215
 216     def _getdb(self):
 217         try:
 218             db = self.tls.db
 219         except AttributeError:
 220             db = sqlite3.connect("%s/%s.db" % (self.dir, self.key), timeout=120)
 221             self.tls.db = db
 222         return db
 223     db = property(_getdb)
 224
 225     def __init__(self, configdir, key):
 226         self.key = key
 227         self.configdir = configdir
 228         self.dir = "%s/%s.d" %(self.configdir, self.key)
 229         self.tls = threading.local ()
 230
 231         if not isdir(self.dir):
 232             mkdir(self.dir)
 233         if not isfile("%s/%s.db" %(self.dir, self.key)):
 234             self.db.execute("CREATE TABLE feed (id text, title text, contentLink text, date float, updated float, link text, read int);")
 235             self.db.execute("CREATE TABLE images (id text, imagePath text);")
 236             self.db.commit()
 237
 238     def addImage(self, configdir, key, baseurl, url, proxy=None, opener=None):
 239         filename = configdir+key+".d/"+getId(url)
 240         if not isfile(filename):
 241             try:
 242                 if not opener:
 243                     opener = downloader(proxy=proxy)
 244
 245                 abs_url = urljoin(baseurl,url)
 246                 f = opener.open(abs_url)
 247                 try:
 248                     with open(filename, "w") as outf:
 249                         for data in f:
 250                             outf.write(data)
 251                 finally:
 252                     f.close()
 253             except (urllib2.HTTPError, urllib2.URLError, IOError), exception:
 254                 logger.info("Could not download image %s: %s"
 255                             % (abs_url, str (exception)))
 256                 return None
 257             except:
 258                 exception = sys.exc_info()[0]
 259
 260                 logger.info("Downloading image %s: %s" %
 261                             (abs_url, traceback.format_exc()))
 262                 try:
 263                     remove(filename)
 264                 except OSError:
 265                     pass
 266
 267                 return None
 268         else:
 269             #open(filename,"a").close()  # "Touch" the file
 270             file = open(filename,"a")
 271             utime(filename, None)
 272             file.close()
 273         return filename
 274
 275     def updateFeed(self, configdir, url, etag, modified, expiryTime=24, proxy=None, imageCache=False, priority=0, postFeedUpdateFunc=None, *postFeedUpdateFuncArgs):
 276         if (os.path.basename(sys.argv[0]) == 'update_feeds.py'):
 277             def doit():
 278                 def it():
 279                     self._updateFeed(configdir, url, etag, modified, expiryTime, proxy, imageCache, postFeedUpdateFunc, *postFeedUpdateFuncArgs)
 280                 return it
 281             JobManager().execute(doit(), self.key, priority=priority)
 282         else:
 283             def send_update_request():
 284                 global update_feeds_iface
 285                 if update_feeds_iface is None:
 286                     bus=dbus.SessionBus()
 287                     remote_object = bus.get_object(
 288                         "org.marcoz.feedingit", # Connection name
 289                         "/org/marcoz/feedingit/update" # Object's path
 290                         )
 291                     update_feeds_iface = dbus.Interface(
 292                         remote_object, 'org.marcoz.feedingit')
 293
 294                 try:
 295                     update_feeds_iface.Update(self.key)
 296                 except Exception, e:
 297                     logger.error("Invoking org.marcoz.feedingit.Update: %s"
 298                                  % str(e))
 299                     update_feeds_iface = None
 300                 else:
 301                     return True
 302
 303             if send_update_request():
 304                 # Success!  It seems we were able to start the update
 305                 # daemon via dbus (or, it was already running).
 306                 return
 307
 308             global update_feed_process
 309             if (update_feed_process is None
 310                 or update_feed_process.poll() is not None):
 311                 # The update_feeds process is not running.  Start it.
 312                 update_feeds = os.path.join(os.path.dirname(__file__),
 313                                             'update_feeds.py')
 314                 argv = ['/usr/bin/env', 'python', update_feeds, '--daemon' ]
 315                 logger.debug("Starting update_feeds: running %s"
 316                              % (str(argv),))
 317                 update_feed_process = subprocess.Popen(argv)
 318                 # Make sure the dbus calls go to the right process:
 319                 # rebind.
 320                 update_feeds_iface = None
 321
 322             for _ in xrange(5):
 323                 if send_update_request():
 324                     break
 325                 time.sleep(1)
 326
 327     def _updateFeed(self, configdir, url, etag, modified, expiryTime=24, proxy=None, imageCache=False, postFeedUpdateFunc=None, *postFeedUpdateFuncArgs):
 328         logger.debug("Updating %s" % url)
 329
 330         success = False
 331         have_serial_execution_lock = False
 332         try:
 333             update_start = time.time ()
 334
 335             progress_handler = HTTPProgressHandler(download_callback)
 336
 337             openers = [progress_handler]
 338             if proxy:
 339                 openers.append (proxy)
 340             kwargs = {'handlers':openers}
 341
 342             feed_transfer_stats = transfer_stats(0, 0)
 343
 344             tmp=feedparser.parse(url, etag=etag, modified=modified, **kwargs)
 345             download_duration = time.time () - update_start
 346
 347             opener = downloader(progress_handler, proxy)
 348
 349             if JobManager().do_quit:
 350                 raise KeyboardInterrupt
 351
 352             process_start = time.time()
 353
 354             # Expiry time is in hours
 355             expiry = float(expiryTime) * 3600.
 356
 357             currentTime = 0
 358
 359             updated_objects = 0
 360             new_objects = 0
 361
 362             def wc_success():
 363                 try:
 364                     wc().stream_register (self.key, "", 6 * 60 * 60)
 365                 except woodchuck.ObjectExistsError:
 366                     pass
 367                 try:
 368                     wc()[self.key].updated (
 369                         indicator=(woodchuck.Indicator.ApplicationVisual
 370                                    |woodchuck.Indicator.StreamWide),
 371                         transferred_down=progress_handler.stats['received'],
 372                         transferred_up=progress_handler.stats['sent'],
 373                         transfer_time=update_start,
 374                         transfer_duration=download_duration,
 375                         new_objects=new_objects,
 376                         updated_objects=updated_objects,
 377                         objects_inline=new_objects + updated_objects)
 378                 except KeyError:
 379                     logger.warn(
 380                         "Failed to register update of %s with woodchuck!"
 381                         % (self.key))
 382
 383             http_status = tmp.get ('status', 200)
 384
 385             # Check if the parse was succesful.  If the http status code
 386             # is 304, then the download was successful, but there is
 387             # nothing new.  Indeed, no content is returned.  This make a
 388             # 304 look like an error because there are no entries and the
 389             # parse fails.  But really, everything went great!  Check for
 390             # this first.
 391             if http_status == 304:
 392                 logger.debug("%s: No changes to feed." % (self.key,))
 393                 mainthread.execute(wc_success, async=True)
 394                 success = True
 395             elif len(tmp["entries"])==0 and not tmp.version:
 396                 # An error occured fetching or parsing the feed.  (Version
 397                 # will be either None if e.g. the connection timed our or
 398                 # '' if the data is not a proper feed)
 399                 logger.error(
 400                     "Error fetching %s: version is: %s: error: %s"
 401                     % (url, str (tmp.version),
 402                        str (tmp.get ('bozo_exception', 'Unknown error'))))
 403                 logger.debug(tmp)
 404                 def register_stream_update_failed(http_status):
 405                     def doit():
 406                         logger.debug("%s: stream update failed!" % self.key)
 407
 408                         try:
 409                             # It's not easy to get the feed's title from here.
 410                             # At the latest, the next time the application is
 411                             # started, we'll fix up the human readable name.
 412                             wc().stream_register (self.key, "", 6 * 60 * 60)
 413                         except woodchuck.ObjectExistsError:
 414                             pass
 415                         ec = woodchuck.TransferStatus.TransientOther
 416                         if 300 <= http_status and http_status < 400:
 417                             ec = woodchuck.TransferStatus.TransientNetwork
 418                         if 400 <= http_status and http_status < 500:
 419                             ec = woodchuck.TransferStatus.FailureGone
 420                         if 500 <= http_status and http_status < 600:
 421                             ec = woodchuck.TransferStatus.TransientNetwork
 422                         wc()[self.key].update_failed(ec)
 423                     return doit
 424                 if wc().available:
 425                     mainthread.execute(
 426                         register_stream_update_failed(
 427                             http_status=http_status),
 428                         async=True)
 429             else:
 430                currentTime = time.time()
 431                # The etag and modified value should only be updated if the content was not null
 432                try:
 433                    etag = tmp["etag"]
 434                except KeyError:
 435                    etag = None
 436                try:
 437                    modified = tmp["modified"]
 438                except KeyError:
 439                    modified = None
 440                try:
 441                    abs_url = urljoin(tmp["feed"]["link"],"/favicon.ico")
 442                    f = opener.open(abs_url)
 443                    data = f.read()
 444                    f.close()
 445                    outf = open(self.dir+"/favicon.ico", "w")
 446                    outf.write(data)
 447                    outf.close()
 448                    del data
 449                except (urllib2.HTTPError, urllib2.URLError), exception:
 450                    logger.debug("Could not download favicon %s: %s"
 451                                 % (abs_url, str (exception)))
 452
 453                self.serial_execution_lock.acquire ()
 454                have_serial_execution_lock = True
 455
 456                #reversedEntries = self.getEntries()
 457                #reversedEntries.reverse()
 458
 459                ids = self.getIds()
 460
 461                tmp["entries"].reverse()
 462                for entry in tmp["entries"]:
 463                    # Yield so as to make the main thread a bit more
 464                    # responsive.
 465                    time.sleep(0)
 466
 467                    entry_transfer_stats = transfer_stats(
 468                        *feed_transfer_stats(**progress_handler.stats)[0:2])
 469
 470                    if JobManager().do_quit:
 471                        raise KeyboardInterrupt
 472
 473                    object_size = 0
 474
 475                    date = self.extractDate(entry)
 476                    try:
 477                        entry["title"]
 478                    except KeyError:
 479                        entry["title"] = "No Title"
 480                    try :
 481                        entry["link"]
 482                    except KeyError:
 483                        entry["link"] = ""
 484                    try:
 485                        entry["author"]
 486                    except KeyError:
 487                        entry["author"] = None
 488                    if(not(entry.has_key("id"))):
 489                        entry["id"] = None
 490                    content = self.extractContent(entry)
 491                    object_size = len (content)
 492                    tmpEntry = {"title":entry["title"], "content":content,
 493                                 "date":date, "link":entry["link"], "author":entry["author"], "id":entry["id"]}
 494                    id = self.generateUniqueId(tmpEntry)
 495
 496                    current_version \
 497                        = self.db.execute('select date from feed where id=?',
 498                                          (id,)).fetchone()
 499                    if (current_version is not None
 500                        and current_version[0] == date):
 501                        logger.debug("ALREADY DOWNLOADED %s (%s)"
 502                                     % (entry["title"], entry["link"]))
 503                        continue
 504
 505                    if current_version is not None:
 506                        # The version was updated.  Mark it as unread.
 507                        logger.debug("UPDATED: %s (%s)"
 508                                     % (entry["title"], entry["link"]))
 509                        self.setEntryUnread(id)
 510                        updated_objects += 1
 511                    else:
 512                        logger.debug("NEW: %s (%s)"
 513                                     % (entry["title"], entry["link"]))
 514                        new_objects += 1
 515
 516                    #articleTime = time.mktime(self.entries[id]["dateTuple"])
 517                    soup = BeautifulSoup(self.getArticle(tmpEntry)) #tmpEntry["content"])
 518                    images = soup('img')
 519                    baseurl = tmpEntry["link"]
 520                    #if not id in ids:
 521                    if imageCache and len(images) > 0:
 522                        self.serial_execution_lock.release ()
 523                        have_serial_execution_lock = False
 524                        for img in images:
 525                            if not 'src' in img:
 526                                continue
 527
 528                            filename = self.addImage(
 529                                configdir, self.key, baseurl, img['src'],
 530                                opener=opener)
 531                            if filename:
 532                                 img['src']="file://%s" %filename
 533                                 count = self.db.execute("SELECT count(1) FROM images where id=? and imagePath=?;", (id, filename )).fetchone()[0]
 534                                 if count == 0:
 535                                     self.db.execute("INSERT INTO images (id, imagePath) VALUES (?, ?);", (id, filename) )
 536                                     self.db.commit()
 537
 538                                 try:
 539                                     object_size += os.path.getsize (filename)
 540                                 except os.error, exception:
 541                                     logger.error ("Error getting size of %s: %s"
 542                                                   % (filename, exception))
 543                        self.serial_execution_lock.acquire ()
 544                        have_serial_execution_lock = True
 545
 546                    tmpEntry["contentLink"] = configdir+self.key+".d/"+id+".html"
 547                    file = open(tmpEntry["contentLink"], "w")
 548                    file.write(soup.prettify())
 549                    file.close()
 550                    if id in ids:
 551                        self.db.execute("UPDATE feed SET updated=? WHERE id=?;", (currentTime, id) )
 552                        self.db.commit()
 553                    else:
 554                        values = (id, tmpEntry["title"], tmpEntry["contentLink"], tmpEntry["date"], currentTime, tmpEntry["link"], 0)
 555                        self.db.execute("INSERT INTO feed (id, title, contentLink, date, updated, link, read) VALUES (?, ?, ?, ?, ?, ?, ?);", values)
 556                        self.db.commit()
 557 #                   else:
 558 #                       try:
 559 #                           self.db.execute("UPDATE feed SET updated=? WHERE id=?;", (currentTime, id) )
 560 #                           self.db.commit()
 561 #                           filename = configdir+self.key+".d/"+id+".html"
 562 #                           file = open(filename,"a")
 563 #                           utime(filename, None)
 564 #                           file.close()
 565 #                           images = self.db.execute("SELECT imagePath FROM images where id=?;", (id, )).fetchall()
 566 #                           for image in images:
 567 #                                file = open(image[0],"a")
 568 #                                utime(image[0], None)
 569 #                                file.close()
 570 #                       except:
 571 #                           pass
 572
 573                    # Register the object with Woodchuck and mark it as
 574                    # downloaded.
 575                    def register_object_transferred(
 576                            id, title, publication_time,
 577                            sent, received, object_size):
 578                        def doit():
 579                            logger.debug("Registering transfer of object %s"
 580                                         % title)
 581                            try:
 582                                obj = wc()[self.key].object_register(
 583                                    object_identifier=id,
 584                                    human_readable_name=title)
 585                            except woodchuck.ObjectExistsError:
 586                                obj = wc()[self.key][id]
 587                            else:
 588                                obj.publication_time = publication_time
 589                                obj.transferred(
 590                                    indicator=(
 591                                        woodchuck.Indicator.ApplicationVisual
 592                                        |woodchuck.Indicator.StreamWide),
 593                                    transferred_down=received,
 594                                    transferred_up=sent,
 595                                    object_size=object_size)
 596                        return doit
 597                    if wc().available:
 598                        # If the entry does not contain a publication
 599                        # time, the attribute won't exist.
 600                        pubtime = entry.get('date_parsed', None)
 601                        if pubtime:
 602                            publication_time = time.mktime (pubtime)
 603                        else:
 604                            publication_time = None
 605
 606                        sent, received, _ \
 607                            = entry_transfer_stats(**progress_handler.stats)
 608                        # sent and received are for objects (in
 609                        # particular, images) associated with this
 610                        # item.  We also want to attribute the data
 611                        # transferred for the item's content.  This is
 612                        # a good first approximation.
 613                        received += len(content)
 614
 615                        mainthread.execute(
 616                            register_object_transferred(
 617                                id=id,
 618                                title=tmpEntry["title"],
 619                                publication_time=publication_time,
 620                                sent=sent, received=received,
 621                                object_size=object_size),
 622                            async=True)
 623                self.db.commit()
 624
 625                sent, received, _ \
 626                    = feed_transfer_stats(**progress_handler.stats)
 627                logger.debug (
 628                    "%s: Update successful: transferred: %d/%d; objects: %d)"
 629                    % (url, sent, received, len (tmp.entries)))
 630                mainthread.execute (wc_success, async=True)
 631                success = True
 632
 633             rows = self.db.execute("SELECT id FROM feed WHERE (read=0 AND updated<?) OR (read=1 AND updated<?);", (currentTime-2*expiry, currentTime-expiry))
 634             for row in rows:
 635                self.removeEntry(row[0])
 636
 637             from glob import glob
 638             from os import stat
 639             for file in glob(configdir+self.key+".d/*"):
 640                 #
 641                 stats = stat(file)
 642                 #
 643                 # put the two dates into matching format
 644                 #
 645                 lastmodDate = stats[8]
 646                 #
 647                 expDate = time.time()-expiry*3
 648                 # check if image-last-modified-date is outdated
 649                 #
 650                 if expDate > lastmodDate:
 651                     #
 652                     try:
 653                         #
 654                         #print 'Removing', file
 655                         #
 656                         # XXX: Tell woodchuck.
 657                         remove(file) # commented out for testing
 658                         #
 659                     except OSError, exception:
 660                         #
 661                         logger.error('Could not remove %s: %s'
 662                                      % (file, str (exception)))
 663             logger.debug("updated %s: %fs in download, %fs in processing"
 664                          % (self.key, download_duration,
 665                             time.time () - process_start))
 666         except:
 667             logger.error("Updating %s: %s" % (self.key, traceback.format_exc()))
 668         finally:
 669             self.db.commit ()
 670
 671             if have_serial_execution_lock:
 672                 self.serial_execution_lock.release ()
 673
 674             updateTime = 0
 675             try:
 676                 rows = self.db.execute("SELECT MAX(date) FROM feed;")
 677                 for row in rows:
 678                     updateTime=row[0]
 679             except Exception, e:
 680                 logger.error("Fetching update time: %s: %s"
 681                              % (str(e), traceback.format_exc()))
 682             finally:
 683                 if not success:
 684                     etag = None
 685                     modified = None
 686                 title = None
 687                 try:
 688                     title = tmp.feed.title
 689                 except (AttributeError, UnboundLocalError), exception:
 690                     pass
 691                 if postFeedUpdateFunc is not None:
 692                     postFeedUpdateFunc (self.key, updateTime, etag, modified,
 693                                         title, *postFeedUpdateFuncArgs)
 694
 695         self.cache_invalidate()
 696
 697     def setEntryRead(self, id):
 698         self.db.execute("UPDATE feed SET read=1 WHERE id=?;", (id,) )
 699         self.db.commit()
 700
 701         def doit():
 702             try:
 703                 wc()[self.key][id].used()
 704             except KeyError:
 705                 pass
 706         if wc().available():
 707             mainthread.execute(doit, async=True)
 708         self.cache_invalidate('feed')
 709
 710     def setEntryUnread(self, id):
 711         self.db.execute("UPDATE feed SET read=0 WHERE id=?;", (id,) )
 712         self.db.commit()
 713         self.cache_invalidate('feed')
 714
 715     def markAllAsRead(self):
 716         self.db.execute("UPDATE feed SET read=1 WHERE read=0;")
 717         self.db.commit()
 718         self.cache_invalidate('feed')
 719
 720     def isEntryRead(self, id):
 721         return self.lookup('feed', 'read', id) == 1
 722
 723     def getTitle(self, id):
 724         return self.lookup('feed', 'title', id)
 725
 726     def getContentLink(self, id):
 727         return self.db.execute("SELECT contentLink FROM feed WHERE id=?;", (id,) ).fetchone()[0]
 728
 729     def getExternalLink(self, id):
 730         return self.db.execute("SELECT link FROM feed WHERE id=?;", (id,) ).fetchone()[0]
 731
 732     def getDate(self, id):
 733         dateStamp = self.db.execute("SELECT date FROM feed WHERE id=?;", (id,) ).fetchone()[0]
 734         return time.strftime("%a, %d %b %Y %H:%M:%S", time.localtime(dateStamp))
 735
 736     def getDateTuple(self, id):
 737         dateStamp = self.db.execute("SELECT date FROM feed WHERE id=?;", (id,) ).fetchone()[0]
 738         return time.localtime(dateStamp)
 739
 740     def getDateStamp(self, id):
 741         return self.db.execute("SELECT date FROM feed WHERE id=?;", (id,) ).fetchone()[0]
 742
 743     def generateUniqueId(self, entry):
 744         """
 745         Generate a stable identifier for the article.  For the same
 746         entry, this should result in the same identifier.  If
 747         possible, the identifier should remain the same even if the
 748         article is updated.
 749         """
 750         # Prefer the entry's id, which is supposed to be globally
 751         # unique.
 752         key = entry.get('id', None)
 753         if not key:
 754             # Next, try the link to the content.
 755             key = entry.get('link', None)
 756         if not key:
 757             # Ok, the title and the date concatenated are likely to be
 758             # relatively stable.
 759             key = entry.get('title', None) + entry.get('date', None)
 760         if not key:
 761             # Hmm, the article's content will at least guarantee no
 762             # false negatives (i.e., missing articles)
 763             key = entry.get('content', None)
 764         if not key:
 765             # If all else fails, just use a random number.
 766             key = str (random.random ())
 767         return getId (key)
 768
 769     def getIds(self, onlyUnread=False):
 770         if onlyUnread:
 771             rows = self.db.execute("SELECT id FROM feed where read=0 ORDER BY date DESC;").fetchall()
 772         else:
 773             rows = self.db.execute("SELECT id FROM feed ORDER BY date DESC;").fetchall()
 774         ids = []
 775         for row in rows:
 776             ids.append(row[0])
 777         #ids.reverse()
 778         return ids
 779
 780     def getNextId(self, id, forward=True):
 781         if forward:
 782             delta = 1
 783         else:
 784             delta = -1
 785         ids = self.getIds()
 786         index = ids.index(id)
 787         return ids[(index + delta) % len(ids)]
 788
 789     def getPreviousId(self, id):
 790         return self.getNextId(id, forward=False)
 791
 792     def getNumberOfUnreadItems(self):
 793         return self.db.execute("SELECT count(*) FROM feed WHERE read=0;").fetchone()[0]
 794
 795     def getNumberOfEntries(self):
 796         return self.db.execute("SELECT count(*) FROM feed;").fetchone()[0]
 797
 798     def getArticle(self, entry):
 799         #self.setEntryRead(id)
 800         #entry = self.entries[id]
 801         title = entry['title']
 802         #content = entry.get('content', entry.get('summary_detail', {}))
 803         content = entry["content"]
 804
 805         link = entry['link']
 806         author = entry['author']
 807         date = time.strftime("%a, %d %b %Y %H:%M:%S", time.localtime(entry["date"]) )
 808
 809         #text = '''<div style="color: black; background-color: white;">'''
 810         text = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">'
 811         text += "<html><head><title>" + title + "</title>"
 812         text += '<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>\n'
 813         #text += '<style> body {-webkit-user-select: none;} </style>'
 814         text += '</head><body bgcolor=\"#ffffff\"><div><a href=\"' + link + '\">' + title + "</a>"
 815         if author != None:
 816             text += "<BR /><small><i>Author: " + author + "</i></small>"
 817         text += "<BR /><small><i>Date: " + date + "</i></small></div>"
 818         text += "<BR /><BR />"
 819         text += content
 820         text += "</body></html>"
 821         return text
 822
 823     def getContent(self, id):
 824         contentLink = self.db.execute("SELECT contentLink FROM feed WHERE id=?;", (id,)).fetchone()[0]
 825         try:
 826             file = open(self.entries[id]["contentLink"])
 827             content = file.read()
 828             file.close()
 829         except:
 830             content = "Content unavailable"
 831         return content
 832
 833     def extractDate(self, entry):
 834         if entry.has_key("updated_parsed"):
 835             return timegm(entry["updated_parsed"])
 836         elif entry.has_key("published_parsed"):
 837             return timegm(entry["published_parsed"])
 838         else:
 839             return time.time()
 840
 841     def extractContent(self, entry):
 842         content = ""
 843         if entry.has_key('summary'):
 844             content = entry.get('summary', '')
 845         if entry.has_key('content'):
 846             if len(entry.content[0].value) > len(content):
 847                 content = entry.content[0].value
 848         if content == "":
 849             content = entry.get('description', '')
 850         return content
 851
 852     def removeEntry(self, id):
 853         contentLink = self.db.execute("SELECT contentLink FROM feed WHERE id=?;", (id,)).fetchone()[0]
 854         if contentLink:
 855             try:
 856                 remove(contentLink)
 857             except OSError, exception:
 858                 logger.error("Deleting %s: %s" % (contentLink, str (exception)))
 859         self.db.execute("DELETE FROM feed WHERE id=?;", (id,) )
 860         self.db.execute("DELETE FROM images WHERE id=?;", (id,) )
 861         self.db.commit()
 862
 863         def doit():
 864             try:
 865                 wc()[self.key][id].files_deleted (
 866                     woodchuck.DeletionResponse.Deleted)
 867                 del wc()[self.key][id]
 868             except KeyError:
 869                 pass
 870         if wc().available():
 871             mainthread.execute (doit, async=True)
 872
 873 class ArchivedArticles(Feed):
 874     def addArchivedArticle(self, title, link, date, configdir):
 875         id = self.generateUniqueId({"date":date, "title":title})
 876         values = (id, title, link, date, 0, link, 0)
 877         self.db.execute("INSERT INTO feed (id, title, contentLink, date, updated, link, read) VALUES (?, ?, ?, ?, ?, ?, ?);", values)
 878         self.db.commit()
 879
 880     def updateFeed(self, configdir, url, etag, modified, expiryTime=24, proxy=None, imageCache=False):
 881         currentTime = 0
 882         rows = self.db.execute("SELECT id, link FROM feed WHERE updated=0;")
 883         for row in rows:
 884             currentTime = time.time()
 885             id = row[0]
 886             link = row[1]
 887             f = urllib2.urlopen(link)
 888             #entry["content"] = f.read()
 889             html = f.read()
 890             f.close()
 891             soup = BeautifulSoup(html)
 892             images = soup('img')
 893             baseurl = link
 894             for img in images:
 895                 filename = self.addImage(configdir, self.key, baseurl, img['src'], proxy=proxy)
 896                 img['src']=filename
 897                 self.db.execute("INSERT INTO images (id, imagePath) VALUES (?, ?);", (id, filename) )
 898                 self.db.commit()
 899             contentLink = configdir+self.key+".d/"+id+".html"
 900             file = open(contentLink, "w")
 901             file.write(soup.prettify())
 902             file.close()
 903
 904             self.db.execute("UPDATE feed SET read=0, contentLink=?, updated=? WHERE id=?;", (contentLink, time.time(), id) )
 905             self.db.commit()
 906         return (currentTime, None, None)
 907
 908     def purgeReadArticles(self):
 909         rows = self.db.execute("SELECT id FROM feed WHERE read=1;")
 910         #ids = self.getIds()
 911         for row in rows:
 912             self.removeArticle(row[0])
 913
 914     def removeArticle(self, id):
 915         rows = self.db.execute("SELECT imagePath FROM images WHERE id=?;", (id,) )
 916         for row in rows:
 917             try:
 918                 count = self.db.execute("SELECT count(*) FROM images WHERE id!=? and imagePath=?;", (id,row[0]) ).fetchone()[0]
 919                 if count == 0:
 920                     os.remove(row[0])
 921             except:
 922                 pass
 923         self.removeEntry(id)
 924
 925 class Listing(BaseObject):
 926     # Columns to cache.
 927     cached_columns = (('feeds', 'updateTime'),
 928                       ('feeds', 'unread'),
 929                       ('feeds', 'title'),
 930                       ('categories', 'title'))
 931
 932     def _getdb(self):
 933         try:
 934             db = self.tls.db
 935         except AttributeError:
 936             db = sqlite3.connect("%s/feeds.db" % self.configdir, timeout=120)
 937             self.tls.db = db
 938         return db
 939     db = property(_getdb)
 940
 941     # Lists all the feeds in a dictionary, and expose the data
 942     def __init__(self, config, configdir):
 943         self.config = config
 944         self.configdir = configdir
 945
 946         self.tls = threading.local ()
 947
 948         try:
 949             table = self.db.execute("SELECT sql FROM sqlite_master").fetchone()
 950             if table == None:
 951                 self.db.execute("CREATE TABLE feeds(id text, url text, title text, unread int, updateTime float, rank int, etag text, modified text, widget int, category int);")
 952                 self.db.execute("CREATE TABLE categories(id text, title text, unread int, rank int);")
 953                 self.addCategory("Default Category")
 954                 if isfile(self.configdir+"feeds.pickle"):
 955                     self.importOldFormatFeeds()
 956                 else:
 957                     self.addFeed("Maemo News", "http://maemo.org/news/items.xml")
 958             else:
 959                 from string import find, upper
 960                 if find(upper(table[0]), "WIDGET")<0:
 961                     self.db.execute("ALTER TABLE feeds ADD COLUMN widget int;")
 962                     self.db.execute("UPDATE feeds SET widget=1;")
 963                     self.db.commit()
 964                 if find(upper(table[0]), "CATEGORY")<0:
 965                     self.db.execute("CREATE TABLE categories(id text, title text, unread int, rank int);")
 966                     self.addCategory("Default Category")
 967                     self.db.execute("ALTER TABLE feeds ADD COLUMN category int;")
 968                     self.db.execute("UPDATE feeds SET category=1;")
 969             self.db.commit()
 970         except:
 971             pass
 972
 973         # Check that Woodchuck's state is up to date with respect our
 974         # state.
 975         updater = os.path.basename(sys.argv[0]) == 'update_feeds.py'
 976         wc_init (self, True if updater else False)
 977         if wc().available() and updater:
 978             # The list of known streams.
 979             streams = wc().streams_list ()
 980             stream_ids = [s.identifier for s in streams]
 981
 982             # Register any unknown streams.  Remove known streams from
 983             # STREAMS_IDS.
 984             for key in self.getListOfFeeds():
 985                 title = self.getFeedTitle(key)
 986                 # XXX: We should also check whether the list of
 987                 # articles/objects in each feed/stream is up to date.
 988                 if key not in stream_ids:
 989                     logger.debug(
 990                         "Registering previously unknown channel: %s (%s)"
 991                         % (key, title,))
 992                     # Use a default refresh interval of 6 hours.
 993                     wc().stream_register (key, title, 6 * 60 * 60)
 994                 else:
 995                     # Make sure the human readable name is up to date.
 996                     if wc()[key].human_readable_name != title:
 997                         wc()[key].human_readable_name = title
 998                     stream_ids.remove (key)
 999
1000
1001             # Unregister any streams that are no longer subscribed to.
1002             for id in stream_ids:
1003                 logger.debug("Unregistering %s" % (id,))
1004                 w.stream_unregister (id)
1005
1006     def importOldFormatFeeds(self):
1007         """This function loads feeds that are saved in an outdated format, and converts them to sqlite"""
1008         import rss
1009         listing = rss.Listing(self.configdir)
1010         rank = 0
1011         for id in listing.getListOfFeeds():
1012             try:
1013                 rank += 1
1014                 values = (id, listing.getFeedTitle(id) , listing.getFeedUrl(id), 0, time.time(), rank, None, "None", 1)
1015                 self.db.execute("INSERT INTO feeds (id, title, url, unread, updateTime, rank, etag, modified, widget, category) VALUES (?, ?, ? ,? ,? ,?, ?, ?, ?, 1);", values)
1016                 self.db.commit()
1017
1018                 feed = listing.getFeed(id)
1019                 new_feed = self.getFeed(id)
1020
1021                 items = feed.getIds()[:]
1022                 items.reverse()
1023                 for item in items:
1024                         if feed.isEntryRead(item):
1025                             read_status = 1
1026                         else:
1027                             read_status = 0
1028                         date = timegm(feed.getDateTuple(item))
1029                         title = feed.getTitle(item)
1030                         newId = new_feed.generateUniqueId({"date":date, "title":title})
1031                         values = (newId, title , feed.getContentLink(item), date, tuple(time.time()), feed.getExternalLink(item), read_status)
1032                         new_feed.db.execute("INSERT INTO feed (id, title, contentLink, date, updated, link, read) VALUES (?, ?, ?, ?, ?, ?, ?);", values)
1033                         new_feed.db.commit()
1034                         try:
1035                             images = feed.getImages(item)
1036                             for image in images:
1037                                 new_feed.db.execute("INSERT INTO images (id, imagePath) VALUES (?, ?);", (item, image) )
1038                                 new_feed.db.commit()
1039                         except:
1040                             pass
1041                 self.updateUnread(id)
1042             except:
1043                 logger.error("importOldFormatFeeds: %s"
1044                              % (traceback.format_exc(),))
1045         remove(self.configdir+"feeds.pickle")
1046
1047
1048     def addArchivedArticle(self, key, index):
1049         feed = self.getFeed(key)
1050         title = feed.getTitle(index)
1051         link = feed.getExternalLink(index)
1052         date = feed.getDate(index)
1053         count = self.db.execute("SELECT count(*) FROM feeds where id=?;", ("ArchivedArticles",) ).fetchone()[0]
1054         if count == 0:
1055             self.addFeed("Archived Articles", "", id="ArchivedArticles")
1056
1057         archFeed = self.getFeed("ArchivedArticles")
1058         archFeed.addArchivedArticle(title, link, date, self.configdir)
1059         self.updateUnread("ArchivedArticles")
1060
1061     def updateFeed(self, key, expiryTime=None, proxy=None, imageCache=None,
1062                    priority=0):
1063         if expiryTime is None:
1064             expiryTime = self.config.getExpiry()
1065         if not expiryTime:
1066             # Default to 24 hours
1067             expriyTime = 24
1068         if proxy is None:
1069             (use_proxy, proxy) = self.config.getProxy()
1070             if not use_proxy:
1071                 proxy = None
1072         if imageCache is None:
1073             imageCache = self.config.getImageCache()
1074
1075         feed = self.getFeed(key)
1076         (url, etag, modified) = self.db.execute("SELECT url, etag, modified FROM feeds WHERE id=?;", (key,) ).fetchone()
1077         try:
1078             modified = time.struct_time(eval(modified))
1079         except:
1080             modified = None
1081         feed.updateFeed(
1082             self.configdir, url, etag, modified, expiryTime, proxy, imageCache,
1083             priority, postFeedUpdateFunc=self._queuePostFeedUpdate)
1084
1085     def _queuePostFeedUpdate(self, *args, **kwargs):
1086         mainthread.execute (self._postFeedUpdate, async=True, *args, **kwargs)
1087
1088     def _postFeedUpdate(self, key, updateTime, etag, modified, title):
1089         if modified==None:
1090             modified="None"
1091         else:
1092             modified=str(tuple(modified))
1093         if updateTime > 0:
1094             self.db.execute("UPDATE feeds SET updateTime=?, etag=?, modified=? WHERE id=?;", (updateTime, etag, modified, key) )
1095         else:
1096             self.db.execute("UPDATE feeds SET etag=?, modified=? WHERE id=?;", (etag, modified, key) )
1097
1098         if title is not None:
1099             self.db.execute("UPDATE feeds SET title=(case WHEN title=='' THEN ? ELSE title END) where id=?;",
1100                             (title, key))
1101         self.db.commit()
1102         self.cache_invalidate('feeds')
1103         self.updateUnread(key)
1104
1105         update_server_object().ArticleCountUpdated()
1106
1107         stats = JobManager().stats()
1108         global jobs_at_start
1109         completed = stats['jobs-completed'] - jobs_at_start
1110         in_progress = stats['jobs-in-progress']
1111         queued = stats['jobs-queued']
1112
1113         try:
1114             percent = (100 * ((completed + in_progress / 2.))
1115                        / (completed + in_progress + queued))
1116         except ZeroDivisionError:
1117             percent = 100
1118
1119         update_server_object().UpdateProgress(
1120             percent, completed, in_progress, queued, 0, 0, 0, key)
1121
1122         if in_progress == 0 and queued == 0:
1123             jobs_at_start = stats['jobs-completed']
1124
1125     def getFeed(self, key):
1126         if key == "ArchivedArticles":
1127             return ArchivedArticles(self.configdir, key)
1128         return Feed(self.configdir, key)
1129
1130     def editFeed(self, key, title, url, category=None):
1131         if category:
1132             self.db.execute("UPDATE feeds SET title=?, url=?, category=? WHERE id=?;", (title, url, category, key))
1133         else:
1134             self.db.execute("UPDATE feeds SET title=?, url=? WHERE id=?;", (title, url, key))
1135         self.db.commit()
1136         self.cache_invalidate('feeds')
1137
1138         if wc().available():
1139             try:
1140                 wc()[key].human_readable_name = title
1141             except KeyError:
1142                 logger.debug("Feed %s (%s) unknown." % (key, title))
1143
1144     def getFeedUpdateTime(self, key):
1145         update_time = self.lookup('feeds', 'updateTime', key)
1146
1147         if not update_time:
1148             return "Never"
1149
1150         delta = time.time() - update_time
1151
1152         delta_hours = delta / (60. * 60.)
1153         if delta_hours < .1:
1154             return "A few minutes ago"
1155         if delta_hours < .75:
1156             return "Less than an hour ago"
1157         if delta_hours < 1.5:
1158             return "About an hour ago"
1159         if delta_hours < 18:
1160             return "About %d hours ago" % (int(delta_hours + 0.5),)
1161
1162         delta_days = delta_hours / 24.
1163         if delta_days < 1.5:
1164             return "About a day ago"
1165         if delta_days < 18:
1166             return "%d days ago" % (int(delta_days + 0.5),)
1167
1168         delta_weeks = delta_days / 7.
1169         if delta_weeks <= 8:
1170             return "%d weeks ago" % int(delta_weeks + 0.5)
1171
1172         delta_months = delta_days / 30.
1173         if delta_months <= 30:
1174             return "%d months ago" % int(delta_months + 0.5)
1175
1176         return time.strftime("%x", time.gmtime(update_time))
1177
1178     def getFeedNumberOfUnreadItems(self, key):
1179         return self.lookup('feeds', 'unread', key)
1180
1181     def getFeedTitle(self, key):
1182         title = self.lookup('feeds', 'title', key)
1183         if title:
1184             return title
1185
1186         return self.getFeedUrl(key)
1187
1188     def getFeedUrl(self, key):
1189         return self.db.execute("SELECT url FROM feeds WHERE id=?;", (key,)).fetchone()[0]
1190
1191     def getFeedCategory(self, key):
1192         return self.db.execute("SELECT category FROM feeds WHERE id=?;", (key,)).fetchone()[0]
1193
1194     def getListOfFeeds(self, category=None):
1195         if category:
1196             rows = self.db.execute("SELECT id FROM feeds WHERE category=? ORDER BY rank;", (category, ) )
1197         else:
1198             rows = self.db.execute("SELECT id FROM feeds ORDER BY rank;" )
1199         keys = []
1200         for row in rows:
1201             if row[0]:
1202                 keys.append(row[0])
1203         return keys
1204
1205     def getListOfCategories(self):
1206         return list(row[0] for row in self.db.execute(
1207                 "SELECT id FROM categories ORDER BY rank;"))
1208
1209     def getCategoryTitle(self, id):
1210         return self.lookup('categories', 'title', id)
1211
1212     def getSortedListOfKeys(self, order, onlyUnread=False, category=1):
1213         if   order == "Most unread":
1214             tmp = "ORDER BY unread DESC"
1215             #keyorder = sorted(feedInfo, key = lambda k: feedInfo[k][1], reverse=True)
1216         elif order == "Least unread":
1217             tmp = "ORDER BY unread"
1218             #keyorder = sorted(feedInfo, key = lambda k: feedInfo[k][1])
1219         elif order == "Most recent":
1220             tmp = "ORDER BY updateTime DESC"
1221             #keyorder = sorted(feedInfo, key = lambda k: feedInfo[k][2], reverse=True)
1222         elif order == "Least recent":
1223             tmp = "ORDER BY updateTime"
1224             #keyorder = sorted(feedInfo, key = lambda k: feedInfo[k][2])
1225         else: # order == "Manual" or invalid value...
1226             tmp = "ORDER BY rank"
1227             #keyorder = sorted(feedInfo, key = lambda k: feedInfo[k][0])
1228         if onlyUnread:
1229             sql = "SELECT id FROM feeds WHERE unread>0 AND category=%s " %category + tmp
1230         else:
1231             sql = "SELECT id FROM feeds WHERE category=%s " %category + tmp
1232         rows = self.db.execute(sql)
1233         keys = []
1234         for row in rows:
1235             if row[0]:
1236                 keys.append(row[0])
1237         return keys
1238
1239     def getFavicon(self, key):
1240         filename = "%s%s.d/favicon.ico" % (self.configdir, key)
1241         if isfile(filename):
1242             return filename
1243         else:
1244             return False
1245
1246     def updateUnread(self, key):
1247         feed = self.getFeed(key)
1248         self.db.execute("UPDATE feeds SET unread=? WHERE id=?;", (feed.getNumberOfUnreadItems(), key))
1249         self.db.commit()
1250         self.cache_invalidate('feeds')
1251
1252     def addFeed(self, title, url, id=None, category=1):
1253         if not id:
1254             id = getId(url)
1255         count = self.db.execute("SELECT count(*) FROM feeds WHERE id=?;", (id,) ).fetchone()[0]
1256         if count == 0:
1257             max_rank = self.db.execute("SELECT MAX(rank) FROM feeds;").fetchone()[0]
1258             if max_rank == None:
1259                 max_rank = 0
1260             values = (id, title, url, 0, 0, max_rank+1, None, "None", 1, category)
1261             self.db.execute("INSERT INTO feeds (id, title, url, unread, updateTime, rank, etag, modified, widget, category) VALUES (?, ?, ? ,? ,? ,?, ?, ?, ?,?);", values)
1262             self.db.commit()
1263             # Ask for the feed object, it will create the necessary tables
1264             self.getFeed(id)
1265
1266             if wc().available():
1267                 # Register the stream with Woodchuck.  Update approximately
1268                 # every 6 hours.
1269                 wc().stream_register(stream_identifier=id,
1270                                      human_readable_name=title,
1271                                      freshness=6*60*60)
1272
1273             return True
1274         else:
1275             return False
1276
1277     def addCategory(self, title):
1278         rank = self.db.execute("SELECT MAX(rank)+1 FROM categories;").fetchone()[0]
1279         if rank==None:
1280             rank=1
1281         id = self.db.execute("SELECT MAX(id)+1 FROM categories;").fetchone()[0]
1282         if id==None:
1283             id=1
1284         self.db.execute("INSERT INTO categories (id, title, unread, rank) VALUES (?, ?, 0, ?)", (id, title, rank))
1285         self.db.commit()
1286
1287     def removeFeed(self, key):
1288         if wc().available ():
1289             try:
1290                 del wc()[key]
1291             except KeyError:
1292                 logger.debug("Removing unregistered feed %s failed" % (key,))
1293
1294         rank = self.db.execute("SELECT rank FROM feeds WHERE id=?;", (key,) ).fetchone()[0]
1295         self.db.execute("DELETE FROM feeds WHERE id=?;", (key, ))
1296         self.db.execute("UPDATE feeds SET rank=rank-1 WHERE rank>?;", (rank,) )
1297         self.db.commit()
1298
1299         if isdir(self.configdir+key+".d/"):
1300            rmtree(self.configdir+key+".d/")
1301
1302     def removeCategory(self, key):
1303         if self.db.execute("SELECT count(*) FROM categories;").fetchone()[0] > 1:
1304             rank = self.db.execute("SELECT rank FROM categories WHERE id=?;", (key,) ).fetchone()[0]
1305             self.db.execute("DELETE FROM categories WHERE id=?;", (key, ))
1306             self.db.execute("UPDATE categories SET rank=rank-1 WHERE rank>?;", (rank,) )
1307             self.db.execute("UPDATE feeds SET category=1 WHERE category=?;", (key,) )
1308             self.db.commit()
1309
1310     #def saveConfig(self):
1311     #    self.listOfFeeds["feedingit-order"] = self.sortedKeys
1312     #    file = open(self.configdir+"feeds.pickle", "w")
1313     #    pickle.dump(self.listOfFeeds, file)
1314     #    file.close()
1315
1316     def moveUp(self, key):
1317         rank = self.db.execute("SELECT rank FROM feeds WHERE id=?;", (key,)).fetchone()[0]
1318         if rank>0:
1319             self.db.execute("UPDATE feeds SET rank=? WHERE rank=?;", (rank, rank-1) )
1320             self.db.execute("UPDATE feeds SET rank=? WHERE id=?;", (rank-1, key) )
1321             self.db.commit()
1322
1323     def moveCategoryUp(self, key):
1324         rank = self.db.execute("SELECT rank FROM categories WHERE id=?;", (key,)).fetchone()[0]
1325         if rank>0:
1326             self.db.execute("UPDATE categories SET rank=? WHERE rank=?;", (rank, rank-1) )
1327             self.db.execute("UPDATE categories SET rank=? WHERE id=?;", (rank-1, key) )
1328             self.db.commit()
1329
1330     def moveDown(self, key):
1331         rank = self.db.execute("SELECT rank FROM feeds WHERE id=?;", (key,)).fetchone()[0]
1332         max_rank = self.db.execute("SELECT MAX(rank) FROM feeds;").fetchone()[0]
1333         if rank<max_rank:
1334             self.db.execute("UPDATE feeds SET rank=? WHERE rank=?;", (rank, rank+1) )
1335             self.db.execute("UPDATE feeds SET rank=? WHERE id=?;", (rank+1, key) )
1336             self.db.commit()
1337
1338     def moveCategoryDown(self, key):
1339         rank = self.db.execute("SELECT rank FROM categories WHERE id=?;", (key,)).fetchone()[0]
1340         max_rank = self.db.execute("SELECT MAX(rank) FROM categories;").fetchone()[0]
1341         if rank<max_rank:
1342             self.db.execute("UPDATE categories SET rank=? WHERE rank=?;", (rank, rank+1) )
1343             self.db.execute("UPDATE categories SET rank=? WHERE id=?;", (rank+1, key) )
1344             self.db.commit()
1345
1346