yoweb-scrape

   1 #!/usr/bin/python
   2
   3 import signal
   4 signal.signal(signal.SIGINT, signal.SIG_DFL)
   5
   6 import os
   7 import time
   8 import urllib
   9 import urllib2
  10 import errno
  11 import sys
  12 import re as regexp
  13 import random
  14 from optparse import OptionParser
  15
  16 from BeautifulSoup import BeautifulSoup
  17
  18 opts = None
  19
  20
  21 puzzles = ('Swordfighting/Bilging/Sailing/Rigging/Navigating'+
  22         '/Battle Navigation/Gunning/Carpentry/Rumble/Treasure Haul'+
  23         '/Drinking/Spades/Hearts/Treasure Drop/Poker/Distilling'+
  24         '/Alchemistry/Shipwrightery/Blacksmithing/Foraging').split('/')
  25
  26 standingvals = ('Able/Distinguished/Respected/Master'+
  27                 '/Renowned/Grand-Master/Legendary/Ultimate').split('/')
  28
  29 pirate_ref_re = regexp.compile('^/yoweb/pirate\\.wm')
  30
  31 max_pirate_namelen = 12
  32
  33
  34 def debug(m):
  35         if opts.debug:
  36                 print m
  37
  38 class Fetcher:
  39         def __init__(self, ocean, cachedir):
  40                 debug('Fetcher init %s' % cachedir)
  41                 self.ocean = ocean
  42                 self.cachedir = cachedir
  43                 try: os.mkdir(cachedir)
  44                 except (OSError,IOError), oe:
  45                         if oe.errno != errno.EEXIST: raise
  46                 self._cache_scan(time.time())
  47
  48         def _default_ocean(self):
  49                 if self.ocean is None:
  50                         self.ocean = 'ice'
  51
  52         def _cache_scan(self, now):
  53                 # returns list of ages, unsorted
  54                 ages = []
  55                 debug('Fetcher   scan_cache')
  56                 for leaf in os.listdir(self.cachedir):
  57                         if not leaf.startswith('#'): continue
  58                         path = self.cachedir + '/' + leaf
  59                         try: s = os.stat(path)
  60                         except (OSError,IOError), oe:
  61                                 if oe.errno != errno.ENOENT: raise
  62                                 continue
  63                         age = now - s.st_mtime
  64                         if age > opts.expire_age:
  65                                 debug('Fetcher    expire %d %s' % (age, path))
  66                                 try: os.remove(path)
  67                                 except (OSError,IOError), oe:
  68                                         if oe.errno != errno.ENOENT: raise
  69                                 continue
  70                         ages.append(age)
  71                 return ages
  72
  73         def _rate_limit_cache_clean(self, now):
  74                 ages = self._cache_scan(now)
  75                 ages.sort()
  76                 debug('Fetcher   ages ' + `ages`)
  77                 min_age = 1
  78                 need_wait = 0
  79                 for age in ages:
  80                         if age < min_age and age < 300:
  81                                 debug('Fetcher   morewait min=%d age=%d' %
  82                                         (min_age, age))
  83                                 need_wait = max(need_wait, min_age - age)
  84                         min_age += 3
  85                         min_age *= 1.25
  86                 if need_wait > 0:
  87                         debug('Fetcher   wait %d' % need_wait)
  88                         time.sleep(need_wait)
  89
  90         def fetch(self, url, max_age):
  91                 debug('Fetcher fetch %s' % url)
  92                 cache_corename = urllib.quote_plus(url)
  93                 cache_item = "%s/#%s#" % (self.cachedir, cache_corename)
  94                 try: f = file(cache_item, 'r')
  95                 except (OSError,IOError), oe:
  96                         if oe.errno != errno.ENOENT: raise
  97                         f = None
  98                 now = time.time()
  99                 max_age = max(opts.min_max_age, min(max_age, opts.expire_age))
 100                 if f is not None:
 101                         s = os.fstat(f.fileno())
 102                         age = now - s.st_mtime
 103                         if age > max_age:
 104                                 debug('Fetcher  stale %d < %d'% (max_age, age))
 105                                 f = None
 106                 if f is not None:
 107                         data = f.read()
 108                         f.close()
 109                         debug('Fetcher  cached %d > %d' % (max_age, age))
 110                         return data
 111
 112                 debug('Fetcher  fetch')
 113                 self._rate_limit_cache_clean(now)
 114
 115                 stream = urllib2.urlopen(url)
 116                 data = stream.read()
 117                 cache_tmp = "%s/#%s~%d#" % (
 118                         self.cachedir, cache_corename, os.getpid())
 119                 f = file(cache_tmp, 'w')
 120                 f.write(data)
 121                 f.close()
 122                 os.rename(cache_tmp, cache_item)
 123                 debug('Fetcher  stored')
 124                 return data
 125
 126         def yoweb(self, kind, tail, max_age):
 127                 self._default_ocean()
 128                 url = 'http://%s.puzzlepirates.com/yoweb/%s%s' % (
 129                         self.ocean, kind, tail)
 130                 return self.fetch(url, max_age)
 131
 132 class SoupLog:
 133         def __init__(self):
 134                 self.msgs = [ ]
 135         def msg(self, m):
 136                 self.msgs.append(m)
 137         def soupm(self, obj, m):
 138                 self.msg(m + '; in ' + `obj`)
 139         def needs_msgs(self, child_souplog):
 140                 self.msgs += child_souplog.msgs
 141                 child_souplog.msgs = [ ]
 142
 143 def soup_text(obj):
 144         str = ''.join(obj.findAll(text=True))
 145         return str.strip()
 146
 147 class SomethingSoupInfo(SoupLog):
 148         def __init__(self, kind, tail, max_age):
 149                 SoupLog.__init__(self)
 150                 html = fetcher.yoweb(kind, tail, max_age)
 151                 self._soup = BeautifulSoup(html,
 152                         convertEntities=BeautifulSoup.HTML_ENTITIES
 153                         )
 154
 155 class PirateInfo(SomethingSoupInfo):
 156         # Public data members:
 157         #  pi.standings = { 'Treasure Haul': 'Able' ... }
 158         #  pi.name = name
 159         #  pi.crew = (id, name)
 160         #  pi.flag = (id, name)
 161         #  pi.msgs = [ 'message describing problem with scrape' ]
 162
 163         def __init__(self, pirate, max_age=300):
 164                 SomethingSoupInfo.__init__(self,
 165                         'pirate.wm?target=', pirate, max_age)
 166                 self.name = pirate
 167                 self._find_standings()
 168                 self.crew = self._find_crewflag('crew',
 169                         '^/yoweb/crew/info\\.wm')
 170                 self.flag = self._find_crewflag('flag',
 171                         '^/yoweb/flag/info\\.wm')
 172
 173         def _find_standings(self):
 174                 imgs = self._soup.findAll('img',
 175                         src=regexp.compile('/yoweb/images/stat.*'))
 176                 re = regexp.compile(
 177 u'\\s*\\S*/([-A-Za-z]+)\\s*$|\\s*\\S*/\\S*\\s*\\(ocean\\-wide(?:\\s|\\xa0)+([-A-Za-z]+)\\)\\s*$'
 178                         )
 179                 standings = { }
 180
 181                 for skill in puzzles:
 182                         standings[skill] = [ ]
 183
 184                 skl = SoupLog()
 185
 186                 for img in imgs:
 187                         try: puzzle = img['alt']
 188                         except KeyError: continue
 189
 190                         if not puzzle in puzzles:
 191                                 skl.soupm(img, 'unknown puzzle: "%s"' % puzzle)
 192                                 continue
 193                         key = img.findParent('td')
 194                         if key is None:
 195                                 skl.soupm(img, 'puzzle at root! "%s"' % puzzle)
 196                                 continue
 197                         valelem = key.findNextSibling('td')
 198                         if valelem is None:
 199                                 skl.soupm(key, 'puzzle missing sibling "%s"'
 200                                         % puzzle)
 201                                 continue
 202                         valstr = soup_text(valelem)
 203                         match = re.match(valstr)
 204                         if match is None:
 205                                 skl.soupm(key, ('puzzle "%s" unparseable'+
 206                                         ' standing "%s"') % (puzzle, valstr))
 207                                 continue
 208                         standing = match.group(match.lastindex)
 209                         standings[puzzle].append(standing)
 210
 211                 self.standings = { }
 212
 213                 for puzzle in puzzles:
 214                         sl = standings[puzzle]
 215                         if len(sl) > 1:
 216                                 skl.msg('puzzle "%s" multiple standings %s' %
 217                                                 (puzzle, `sl`))
 218                                 continue
 219                         if not sl:
 220                                 skl.msg('puzzle "%s" no standing found' % puzzle)
 221                                 continue
 222                         standing = sl[0]
 223                         for i in range(0, len(standingvals)-1):
 224                                 if standing == standingvals[i]:
 225                                         self.standings[puzzle] = i
 226                         if not puzzle in self.standings:
 227                                 skl.msg('puzzle "%s" unknown standing "%s"' %
 228                                         (puzzle, standing))
 229
 230                 all_standings_ok = True
 231                 for puzzle in puzzles:
 232                         if not puzzle in self.standings:
 233                                 self.needs_msgs(skl)
 234
 235         def _find_crewflag(self, cf, yoweb_re):
 236                 things = self._soup.findAll('a', href=regexp.compile(yoweb_re))
 237                 if len(things) != 1:
 238                         self.msg('zero or several %s id references found' % cf)
 239                         return None
 240                 thing = things[0]
 241                 id_re = '\\b%sid\\=(\\w+)$' % cf
 242                 id_haystack = thing['href']
 243                 match = regexp.compile(id_re).search(id_haystack)
 244                 if match is None:
 245                         self.soupm(thing, ('incomprehensible %s id ref'+
 246                                 ' (%s in %s)') % (cf, id_re, id_haystack))
 247                         return None
 248                 name = soup_text(thing)
 249                 return (match.group(1), name)
 250
 251         def __str__(self):
 252                 return `(self.crew, self.flag, self.standings, self.msgs)`
 253
 254 class CrewInfo(SomethingSoupInfo):
 255         # Public data members:
 256         #  ci.crew = [ ('Captain',        ['Pirate', ...]),
 257         #              ('Senior Officer', [...]),
 258         #               ... ]
 259         #  pi.msgs = [ 'message describing problem with scrape' ]
 260
 261         def __init__(self, crewid, max_age=300):
 262                 SomethingSoupInfo.__init__(self,
 263                         'crew/info.wm?crewid=', crewid, max_age)
 264                 self._find_crew()
 265
 266         def _find_crew(self):
 267                 self.crew = []
 268                 capts = self._soup.findAll('img',
 269                         src='/yoweb/images/crew-captain.png')
 270                 if len(capts) != 1:
 271                         self.msg('crew members: no. of captain images != 1')
 272                         return
 273                 tbl = capts[0]
 274                 while not tbl.find('a', href=pirate_ref_re):
 275                         tbl = tbl.findParent('table')
 276                         if not tbl:
 277                                 self.msg('crew members: cannot find table')
 278                                 return
 279                 current_rank_crew = None
 280                 crew_rank_re = regexp.compile('/yoweb/images/crew')
 281                 for row in tbl.contents:
 282                         # findAll(recurse=False)
 283                         if isinstance(row, unicode):
 284                                 continue
 285
 286                         is_rank = row.find('img', attrs={'src': crew_rank_re})
 287                         if is_rank:
 288                                 rank = soup_text(row)
 289                                 current_rank_crew = []
 290                                 self.crew.append((rank, current_rank_crew))
 291                                 continue
 292                         for cell in row.findAll('a', href=pirate_ref_re):
 293                                 if current_rank_crew is None:
 294                                         self.soupm(cell, 'crew members: crew'
 295                                                 ' before rank')
 296                                         continue
 297                                 current_rank_crew.append(soup_text(cell))
 298
 299         def __str__(self):
 300                 return `(self.crew, self.msgs)`
 301
 302 class StandingsTable:
 303         def __init__(self, use_puzzles=None, col_width=6):
 304                 if use_puzzles is None:
 305                         if opts.ship_duty:
 306                                 use_puzzles=[
 307                                         'Navigating','Battle Navigation',
 308                                         'Gunning',
 309                                         ['Sailing','Rigging'],
 310                                         'Bilging',
 311                                         'Carpentry',
 312                                         'Treasure Haul'
 313                                 ]
 314                         else:
 315                                 use_puzzles=puzzles
 316                 self._puzzles = use_puzzles
 317                 self.s = ''
 318                 self._cw = col_width-1
 319
 320         def _pline(self, pirate, puzstrs):
 321                 self.s += ' %-*s' % (max(max_pirate_namelen, 14), pirate)
 322                 for v in puzstrs:
 323                         self.s += ' %-*.*s' % (self._cw,self._cw, v)
 324                 self.s += '\n'
 325
 326         def _puzstr(self, pi, puzzle):
 327                 if not isinstance(puzzle,list): puzzle = [puzzle]
 328                 try: standing = max([pi.standings[p] for p in puzzle])
 329                 except KeyError: return '?'
 330                 if not standing: return ''
 331                 s = ''
 332                 if self._cw > 4:
 333                         c1 = standingvals[standing][0]
 334                         if standing < 3: c1 = c1.lower() # 3 = Master
 335                         s += `standing`
 336                 if self._cw > 5:
 337                         s += ' '
 338                 s += '*' * (standing / 2)
 339                 s += '+' * (standing % 2)
 340                 return s
 341
 342         def headings(self):
 343                 def puzn_redact(name):
 344                         if isinstance(name,list):
 345                                 return '/'.join(
 346                                         ["%.*s" % (self._cw/2, puzn_redact(n))
 347                                          for n in name])
 348                         spc = name.find(' ')
 349                         if spc < 0: return name
 350                         return name[0:min(4,spc)] + name[spc+1:]
 351                 self._pline('', map(puzn_redact, self._puzzles))
 352         def literalline(self, line):
 353                 self.s += line + '\n'
 354         def pirate(self, pi):
 355                 puzstrs = [self._puzstr(pi,puz) for puz in self._puzzles]
 356                 self._pline(pi.name, puzstrs)
 357
 358         def results(self):
 359                 return self.s
 360
 361 def do_pirate(pirates, bu):
 362         print '{'
 363         for pirate in pirates:
 364                 info = PirateInfo(pirate)
 365                 print '%s: %s,' % (`pirate`, info)
 366         print '}'
 367
 368 def prep_crew_of(args, bu, max_age=300):
 369         if len(args) != 1: bu('crew-of takes one pirate name')
 370         pi = PirateInfo(args[0], max_age)
 371         return CrewInfo(pi.crew[0], max_age)
 372
 373 def do_crew_of(args, bu):
 374         ci = prep_crew_of(args, bu)
 375         print ci
 376
 377 def do_standings_crew_of(args, bu):
 378         ci = prep_crew_of(args, bu, 60)
 379         tab = StandingsTable()
 380         tab.headings()
 381         for (rank, members) in ci.crew:
 382                 if not members: continue
 383                 tab.literalline('%s:' % rank)
 384                 for p in members:
 385                         pi = PirateInfo(p, random.randint(900,1800))
 386                         tab.pirate(pi)
 387         print tab.results()
 388
 389 class PirateAboard:
 390         # pa.v
 391         # pa.last_time
 392         # pa.last_event
 393         # pa.gunner
 394         # pa.last_chat_time
 395         # pa.last_chat_chan
 396         def __init__(pa, v, time, event):
 397                 pa.v = v
 398                 pa.last_time = time
 399                 pa.last_event = event
 400                 pa.last_chat_time = None
 401                 pa.last_chat_chan = None
 402                 pa.gunner = False
 403
 404 class ChatLogTracker:
 405         def __init__(self, myself_pi):
 406                 self._pl = {}   # self._pl['Pirate'] =
 407                 self._vl = {}   #   self._vl['Vessel']['Pirate'] = PirateAboard
 408                                 # self._vl['Vessel']['#lastaboard']
 409                 self._v = None          # self._v =
 410                 self._vessel = None     #       self._vl[self._vessel]
 411                 self._date = None
 412                 self._myself = myself_pi
 413                 self._need_redisplay = False
 414
 415         def _refresh(self):
 416                 self._need_redisplay = True
 417
 418         def _onboard_event(self,timestamp,pirate,event):
 419                 try: pa = self._pl[pirate]
 420                 except KeyError: pa = None
 421                 if pa is not None and pa.v is self._v:
 422                         pa.last_time = timestamp
 423                         pa.last_event = event
 424                 else:
 425                         if pa is not None: del pa.v[pirate]
 426                         pa = PirateAboard(self._v, timestamp, event)
 427                         self._pl[pirate] = pa
 428                         self._v[pirate] = pa
 429                 self._v['#lastaboard'] = timestamp
 430                 self._refresh()
 431                 return pa
 432
 433         def _trash_vessel(self, v):
 434                 for pn in v:
 435                         if pn.startswith('#'): continue
 436                         del self._pl[pn]
 437
 438         def expire_garbage(self, timestamp):
 439                 for (vn,v) in list(self._vl.iteritems()):
 440                         la = v['#lastaboard']
 441                         if timestamp - la > opts.ship_reboard_clearout:
 442                                 self._debug_line_disposition(timestamp,'',
 443                                         'stale reset '+vn)
 444                                 self._trash_vessel(v)
 445                                 del self._vl[vn]
 446
 447         def clear_vessel(self, timestamp):
 448                 if self._v is not None:
 449                         self._trash_vessel(self._v)
 450                 self._v = {'#lastaboard': timestamp}
 451                 self._vl[self._vessel] = self._v
 452
 453         def _debug_line_disposition(self,timestamp,l,m):
 454                 debug('CLT %13s %-30s %s' % (timestamp,m,l))
 455
 456         def chatline(self,l):
 457                 rm = lambda re: regexp.match(re,l)
 458                 d = lambda m: self._debug_line_disposition(timestamp,l,m)
 459                 timestamp = None
 460
 461                 m = rm('=+ (\\d+)/(\\d+)/(\\d+) =+$')
 462                 if m:
 463                         self._date = m.groups()
 464                         return d('date '+`self._date`)
 465
 466                 if self._date is None:
 467                         return d('date unset')
 468
 469                 m = rm('\\[(\d\d):(\d\d):(\d\d)\\] ')
 470                 if not m:
 471                         return d('no timestamp')
 472
 473                 time_tuple = [int(x) for x in self._date + m.groups()]
 474                 time_tuple += (-1,-1,-1)
 475                 timestamp = time.mktime(time_tuple)
 476                 l = l[l.find(' ')+1:]
 477
 478                 def ob_x(who,event):
 479                         return self._onboard_event(timestamp, who, event)
 480                 def ob1(did): ob_x(m.group(1), did); return d(did)
 481                 def oba(did): return ob1('%s %s' % (did, m.group(2)))
 482
 483                 m = rm('Going aboard the (\\S.*\\S)\\.\\.\\.$')
 484                 if m:
 485                         pn = self._myself.name
 486                         self._vessel = m.group(1)
 487                         dm = 'boarding'
 488
 489                         try:             self._v = self._vl[self._vessel]
 490                         except KeyError: self._v = None; dm += ' new'
 491
 492                         if self._v is not None:  la = self._v['#lastaboard']
 493                         else:                    la = 0; dm += ' ?la'
 494
 495                         if timestamp - la > opts.ship_reboard_clearout:
 496                                 self.clear_vessel(timestamp)
 497                                 dm += ' stale'
 498
 499                         ob_x(pn, 'we boarded')
 500                         self.expire_garbage(timestamp)
 501                         return d(dm)
 502
 503                 if self._v is None:
 504                         return d('no vessel')
 505
 506                 m = rm('(\\w+) has come aboard\\.$')
 507                 if m: return ob1('boarded');
 508
 509                 m = rm('You have ordered (\\w+) to do some (\\S.*\\S)\\.$')
 510                 if m:
 511                         (who,what) = m.groups()
 512                         pa = ob_x(who,'ordered '+what)
 513                         if what == 'Gunning':
 514                                 pa.gunner = True
 515                         return d('duty order')
 516
 517                 m = rm('(\\w+) abandoned a (\\S.*\\S) station\\.$')
 518                 if m: oba('stopped'); return d('stopped')
 519
 520                 def chat(what):
 521                         who = m.group(1)
 522                         try: pa = self._pl[who]
 523                         except KeyError: return d('chat mystery')
 524                         if pa.v is self._v:
 525                                 pa.last_chat_time = timestamp
 526                                 pa.last_chat_chan = what
 527                                 self._refresh()
 528                                 return d(what+' chat')
 529
 530                 m = rm('(\\w+) (?:issued an order|ordered everyone) "')
 531                 if m: return ob1('general order');
 532
 533                 m = rm('(\\w+) says, "')
 534                 if m: return chat('public')
 535
 536                 m = rm('(\\w+) tells ye, "')
 537                 if m: return chat('private')
 538
 539                 m = rm('(\\w+) flag officer chats, "')
 540                 if m: return chat('flag officer')
 541
 542                 m = rm('(\\w+) officer chats, "')
 543                 if m: return chat('officer')
 544
 545                 m = rm('Game over\\.  Winners: ([A-Za-z, ]+)\\.$')
 546                 if m:
 547                         pl = m.group(1).split(', ')
 548                         if not self._myself.name in pl:
 549                                 return d('lost boarding battle')
 550                         for pn in pl:
 551                                 if ' ' in pn: continue
 552                                 ob_x(pn,'won boarding battle')
 553                         return d('won boarding battle')
 554
 555                 m = rm('(\\w+) is eliminated\\!')
 556                 if m: return ob1('eliminated in fray');
 557
 558                 m = rm('(\\w+) has left the vessel\.')
 559                 if m:
 560                         who = m.group(1)
 561                         ob_x(who, 'disembarked')
 562                         del self._v[who]
 563                         del self._pl[who]
 564                         return d('disembarked')
 565
 566                 return d('not matched')
 567
 568         def _str_vessel(self, vn, v):
 569                 s = ' vessel %s\n' % vn
 570                 s += ' '*20 + "%-*s   %13s\n" % (
 571                                 max_pirate_namelen, '#lastaboard',
 572                                 v['#lastaboard'])
 573                 for pn in sorted(v.keys()):
 574                         if pn.startswith('#'): continue
 575                         pa = v[pn]
 576                         assert pa.v == v
 577                         assert self._pl[pn] == pa
 578                         s += ' '*20 + "%s %-*s %13s %-30s %13s %s\n" % (
 579                                 (' ','G')[pa.gunner],
 580                                 max_pirate_namelen, pn,
 581                                 pa.last_time, pa.last_event,
 582                                 pa.last_chat_time, pa.last_chat_chan)
 583                 return s
 584
 585         def __str__(self):
 586                 s = '''<ChatLogTracker
 587  myself %s
 588  vessel %s
 589 '''                     % (self._myself.name, self._vessel)
 590                 assert ((self._v is None and self._vessel is None) or
 591                         (self._v is self._vl[self._vessel]))
 592                 if self._vessel is not None:
 593                         s += self._str_vessel(self._vessel, self._v)
 594                 for vn in sorted(self._vl.keys()):
 595                         if vn == self._vessel: continue
 596                         s += self._str_vessel(vn, self._vl[vn])
 597                 for p in self._pl:
 598                         pa = self._pl[p]
 599                         assert pa.v[p] is pa
 600                         assert pa.v in self._vl.values()
 601                 s += '>\n'
 602                 return s
 603
 604 def do_ship_aid(args, bu):
 605         if len(args) != 1: bu('ship-aid takes only chat log filename')
 606         logfn = args[0]
 607         logfn_re = '(?:.*/)?([A-Z][a-z]+)_([a-z]+)_chat-log-\\w+$'
 608         match = regexp.match(logfn_re, logfn)
 609         if not match: bu('ship-aid chat log filename is not in default format')
 610         (pirate, fetcher.ocean) = match.groups()
 611         myself_pi = PirateInfo(pirate,3600)
 612         track = ChatLogTracker(myself_pi)
 613         f = file(logfn)
 614         l = ''
 615         while True:
 616                 l += f.readline()
 617                 if l.endswith('\n'):
 618                         track.chatline(l.rstrip())
 619                         l = ''
 620                         print track
 621                         continue
 622                 if l:
 623                         continue
 624                 print track
 625                 os.sleep(1)
 626
 627 def main():
 628         global opts, fetcher
 629
 630         pa = OptionParser(
 631 '''usage: .../yoweb-scrape [OPTION...] ACTION [ARGS...]
 632 actions:
 633  yoweb-scrape [--ocean OCEAN ...] pirate PIRATE
 634  yoweb-scrape [--ocean OCEAN ...] crew-of PIRATE
 635  yoweb-scrape [--ocean OCEAN ...] standings-crew-of PIRATE
 636  yoweb-scrape [--ocean OCEAN ...] ship-aid CHAT-LOG
 637 ''')
 638         ao = pa.add_option
 639         ao('-O','--ocean',dest='ocean', metavar='OCEAN', default=None,
 640                 help='select ocean OCEAN')
 641         ao('--cache-dir', dest='cache_dir', metavar='DIR',
 642                 default='~/.yoweb-scrape-cache',
 643                 help='cache yoweb pages in DIR')
 644         ao('-D','--debug', action='store_true', dest='debug', default=False,
 645                 help='enable debugging output')
 646         ao('-q','--quiet', action='store_true', dest='quiet',
 647                 help='suppress warning output')
 648
 649         ao('--ship-duty', action='store_true', dest='ship_duty',
 650                 help='show ship duty station puzzles')
 651
 652         (opts,args) = pa.parse_args()
 653         random.seed()
 654
 655         if len(args) < 1:
 656                 pa.error('need a mode argument')
 657
 658         mode = args[0]
 659         mode_fn_name = 'do_' + mode.replace('_','#').replace('-','_')
 660         try: mode_fn = globals()[mode_fn_name]
 661         except KeyError: pa.error('unknown mode "%s"' % mode)
 662
 663         # fixed parameters
 664         opts.min_max_age = 60
 665         opts.expire_age = 3600
 666         opts.ship_reboard_clearout = 3600
 667
 668         if opts.cache_dir.startswith('~/'):
 669                 opts.cache_dir = os.getenv('HOME') + opts.cache_dir[1:]
 670
 671         fetcher = Fetcher(opts.ocean, opts.cache_dir)
 672
 673         mode_fn(args[1:], pa.error)
 674
 675 main()