mdw@git.distorted.org.uk Git - epls/blob - mkm3u

   1 #! /usr/bin/python3
   2 ### -*- mode: python; coding: utf-8 -*-
   3
   4 from contextlib import contextmanager
   5 import optparse as OP
   6 import os as OS
   7 import re as RX
   8 import subprocess as SP
   9 import sys as SYS
  10
  11 class ExpectedError (Exception): pass
  12
  13 @contextmanager
  14 def location(loc):
  15   global LOC
  16   old, LOC = LOC, loc
  17   yield loc
  18   LOC = old
  19
  20 def filter(value, func = None, dflt = None):
  21   if value is None: return dflt
  22   elif func is None: return value
  23   else: return func(value)
  24
  25 def check(cond, msg):
  26   if not cond: raise ExpectedError(msg)
  27
  28 def lookup(dict, key, msg):
  29   try: return dict[key]
  30   except KeyError: raise ExpectedError(msg)
  31
  32 def forget(dict, key):
  33   try: del dict[key]
  34   except KeyError: pass
  35
  36 def getint(s):
  37   if not s.isdigit(): raise ExpectedError("bad integer `%s'" % s)
  38   return int(s)
  39
  40 class Words (object):
  41   def __init__(me, s):
  42     me._s = s
  43     me._i, me._n = 0, len(s)
  44   def _wordstart(me):
  45     s, i, n = me._s, me._i, me._n
  46     while i < n:
  47       if not s[i].isspace(): return i
  48       i += 1
  49     return -1
  50   def nextword(me):
  51     s, n = me._s, me._n
  52     begin = i = me._wordstart()
  53     if begin < 0: return None
  54     while i < n and not s[i].isspace(): i += 1
  55     me._i = i
  56     return s[begin:i]
  57   def rest(me):
  58     s, n = me._s, me._n
  59     begin = me._wordstart()
  60     if begin < 0: return None
  61     else: return s[begin:].rstrip()
  62
  63 def program_output(*args, **kw):
  64   try: return SP.check_output(*args, **kw)
  65   except SP.CalledProcessError as e:
  66     raise ExpectedError("program `%s' failed with code %d" %
  67                           (e.cmd, e.returncode))
  68
  69 URL_SAFE_P = 256*[False]
  70 for ch in \
  71     b"ABCDEFGHIJKLMNOPQRSTUVWXYZ" \
  72     b"abcdefghijklmnopqrstuvwxyz" \
  73     b"0123456789" b"!$%-.,/":
  74   URL_SAFE_P[ch] = True
  75 def urlencode(s):
  76   return "".join((URL_SAFE_P[ch] and chr(ch) or "%%%02x" % ch
  77                   for ch in s.encode("UTF-8")))
  78
  79 PROG = OS.path.basename(SYS.argv[0])
  80
  81 class BaseLocation (object):
  82   def report(me, exc):
  83     SYS.stderr.write("%s: %s%s\n" % (PROG, me._loc(), exc))
  84
  85 class DummyLocation (BaseLocation):
  86   def _loc(me): return ""
  87
  88 class FileLocation (BaseLocation):
  89   def __init__(me, fn, lno = 1): me._fn, me._lno = fn, lno
  90   def _loc(me): return "%s:%d: " % (me._fn, me._lno)
  91   def stepline(me): me._lno += 1
  92
  93 LOC = DummyLocation()
  94
  95 class Source (object):
  96   PREFIX = ""
  97   TITLEP = CHAPTERP = False
  98   def __init__(me, fn):
  99     me.fn = fn
 100     me.neps = None
 101     me.used_titles = dict()
 102     me.used_chapters = set()
 103     me.nuses = 0
 104   def _duration(me, title, start_chapter, end_chapter):
 105     return -1
 106   def url_and_duration(me, title = None,
 107                        start_chapter = None, end_chapter = None):
 108     if title == "-":
 109       if me.TITLEP: raise ExpectedError("missing title number")
 110       if start_chapter is not None or end_chapter is not None:
 111         raise ExpectedError("can't specify chapter without title")
 112       suffix = ""
 113     elif not me.TITLEP:
 114       raise ExpectedError("can't specify title with `%s'" % me.fn)
 115     elif start_chapter is None:
 116       if end_chapter is not None:
 117         raise ExpectedError("can't specify end chapter without start chapter")
 118       suffix = "#%d" % title
 119     elif not me.CHAPTERP:
 120       raise ExpectedError("can't specify chapter with `%s'" % me.fn)
 121     elif end_chapter is None:
 122       suffix = "#%d:%d" % (title, start_chapter)
 123     else:
 124       suffix = "#%d:%d-%d:%d" % (title, start_chapter, title, end_chapter - 1)
 125
 126     duration = me._duration(title, start_chapter, end_chapter)
 127
 128     if end_chapter is not None:
 129       keys = [(title, ch) for ch in range(start_chapter, end_chapter)]
 130       set = me.used_chapters
 131     else:
 132       keys, set = [title], me.used_titles
 133     for k in keys:
 134       if k in set:
 135         if title == "-":
 136           raise ExpectedError("`%s' already used" % me.fn)
 137         elif end_chapter is None:
 138           raise ExpectedError("`%s' title %d already used" % (me.fn, title))
 139         else:
 140           raise ExpectedError("`%s' title %d chapter %d already used" %
 141                               (me.fn, title, k[1]))
 142     if end_chapter is not None:
 143       for ch in range(start_chapter, end_chapter):
 144         me.used_chapters.add((title, ch))
 145     return me.PREFIX + ROOT + urlencode(me.fn) + suffix, duration
 146
 147 class VideoDisc (Source):
 148   PREFIX = "dvd://"
 149   TITLEP = CHAPTERP = True
 150
 151   def __init__(me, fn, *args, **kw):
 152     super().__init__(fn, *args, **kw)
 153     me.neps = 0
 154
 155   def _duration(me, title, start_chapter, end_chapter):
 156     path = OS.path.join(ROOT, me.fn)
 157     ntitle = int(program_output(["dvd-info", path, "titles"]))
 158     if not 1 <= title <= ntitle:
 159       raise ExpectedError("bad title %d for `%s': must be in 1 .. %d" %
 160                             (title, me.fn, ntitle))
 161     if start_chapter is None:
 162       durq = "duration:%d" % title
 163     else:
 164       nch = int(program_output(["dvd-info", path, "chapters:%d" % title]))
 165       if end_chapter is None: end_chapter = nch
 166       else: end_chapter -= 1
 167       if not 1 <= start_chapter <= end_chapter <= nch:
 168         raise ExpectedError("bad chapter range %d .. %d for `%s' title %d: "
 169                             "must be in 1 .. %d" %
 170                             (start_chapter, end_chapter, me.fn, title, nch))
 171       durq = "duration:%d.%d-%d" % (title, start_chapter, end_chapter)
 172     duration = int(program_output(["dvd-info", path, durq]))
 173     return duration
 174
 175 class VideoSeason (object):
 176   def __init__(me, i, title):
 177     me.i = i
 178     me.title = title
 179     me.episodes = {}
 180   def set_episode_disc(me, i, disc):
 181     if i in me.episodes:
 182       raise ExpectedError("season %d episode %d already taken" % (me.i, i))
 183     me.episodes[i] = disc; disc.neps += 1
 184
 185 def match_group(m, *groups, dflt = None, mustp = False):
 186   for g in groups:
 187     try: s = m.group(g)
 188     except IndexError: continue
 189     if s is not None: return s
 190   if mustp: raise ValueError("no match found")
 191   else: return dflt
 192
 193 class VideoDir (object):
 194
 195   _R_ISO_PRE = list(map(lambda pats:
 196                           list(map(lambda pat:
 197                                      RX.compile("^" + pat + r"\.iso$", RX.X),
 198                                    pats)),
 199     [[r""" S (?P<si> \d+) \. \ (?P<stitle> .*) — (?: D \d+ \. \ )?
 200            (?P<epex> .*) """,
 201       r""" S (?P<si> \d+) (?: D \d+)? \. \ (?P<epex> .*) """,
 202       r""" S (?P<si> \d+) \. \ (?P<epex> E \d+ .*) """,
 203       r""" S (?P<si> \d+) (?P<epex> E \d+) \. \ .* """],
 204      [r""" (?P<si> \d+) [A-Z]? \. \ (?P<stitle> .*) — (?P<epex> .*) """],
 205      [r""" \d+ \. \ (?P<epex> [ES] \d+ .*) """],
 206      [r""" (?P<epnum> \d+ ) \. \ .* """]]))
 207
 208   _R_ISO_EP = RX.compile(r""" ^
 209         (?: S (?P<si> \d+) \ )?
 210         E (?P<ei> \d+) (?: – (?P<ej> \d+))? $
 211   """, RX.X)
 212
 213   def __init__(me, dir):
 214     me.dir = dir
 215     fns = OS.listdir(OS.path.join(ROOT, dir))
 216     fns.sort()
 217     season = None
 218     seasons = {}
 219     styles = me._R_ISO_PRE
 220     for fn in fns:
 221       path = OS.path.join(dir, fn)
 222       if not fn.endswith(".iso"): continue
 223       #print(";; `%s'" % path, file = SYS.stderr)
 224       for sty in styles:
 225         for r in sty:
 226           m = r.match(fn)
 227           if m: styles = [sty]; break
 228         else:
 229           continue
 230         break
 231       else:
 232         #print(";;\tignored (regex mismatch)", file = SYS.stderr)
 233         continue
 234
 235       si = filter(match_group(m, "si"), int)
 236       stitle = match_group(m, "stitle")
 237
 238       check(si is not None or stitle is None,
 239             "explicit season title without number in `%s'" % fn)
 240       if si is not None:
 241         if season is None or si != season.i:
 242           check(season is None or si == season.i + 1,
 243                 "season %d /= %d" %
 244                   (si, season is None and -1 or season.i + 1))
 245           check(si not in seasons, "season %d already seen" % si)
 246           seasons[si] = season = VideoSeason(si, stitle)
 247         else:
 248           check(stitle == season.title,
 249                 "season title `%s' /= `%s'" % (stitle, season.title))
 250
 251       disc = VideoDisc(path)
 252       ts = season
 253       any, bad = False, False
 254       epnum = match_group(m, "epnum")
 255       if epnum is not None: eplist = ["E" + epnum]
 256       else: eplist = match_group(m, "epex", mustp = True).split(", ")
 257       for eprange in eplist:
 258         mm = me._R_ISO_EP.match(eprange)
 259         if mm is None:
 260           #print(";;\t`%s'?" % eprange, file = SYS.stderr)
 261           bad = True; continue
 262         if not any: any = True
 263         i = filter(mm.group("si"), int)
 264         if i is not None:
 265           try: ts = seasons[i]
 266           except KeyError: ts = seasons[i] = VideoSeason(i, None)
 267         if ts is None:
 268           ts = season = seasons[1] = VideoSeason(1, None)
 269         start = filter(mm.group("ei"), int)
 270         end = filter(mm.group("ej"), int, start)
 271         for k in range(start, end + 1):
 272           ts.set_episode_disc(k, disc)
 273           #print(";;\tepisode %d.%d" % (ts.i, k), file = SYS.stderr)
 274       if not any:
 275         #print(";;\tignored", file = SYS.stderr)
 276         pass
 277       elif bad:
 278         raise ExpectedError("bad ep list in `%s'", fn)
 279     me.seasons = seasons
 280
 281 class AudioDisc (Source):
 282   PREFIX = "file://"
 283   TITLEP = CHAPTERP = False
 284
 285   def _duration(me, title, start_chapter, end_chaptwr):
 286     out = program_output(["metaflac",
 287                           "--show-total-samples", "--show-sample-rate",
 288                           OS.path.join(ROOT, me.fn)])
 289     nsamples, hz = map(float, out.split())
 290     return int(nsamples/hz)
 291
 292 class AudioEpisode (AudioDisc):
 293   def __init__(me, fn, i, *args, **kw):
 294     super().__init__(fn, *args, **kw)
 295     me.i = i
 296
 297 class AudioDir (object):
 298
 299   _R_FLAC = RX.compile(r""" ^
 300           E (\d+)
 301           (?: \. \ (.*))?
 302           \. flac $
 303   """, RX.X)
 304
 305   def __init__(me, dir):
 306     me.dir = dir
 307     fns = OS.listdir(OS.path.join(ROOT, dir))
 308     fns.sort()
 309     episodes = {}
 310     last_i = 0
 311     for fn in fns:
 312       path = OS.path.join(dir, fn)
 313       if not fn.endswith(".flac"): continue
 314       m = me._R_FLAC.match(fn)
 315       if not m: continue
 316       i = filter(m.group(1), int)
 317       etitle = m.group(2)
 318       check(i == last_i + 1, "episode %d /= %d" % (i, last_i + 1))
 319       episodes[i] = AudioEpisode(path, i)
 320       last_i = i
 321     me.episodes = episodes
 322
 323 class Chapter (object):
 324   def __init__(me, episode, title, i):
 325     me.title, me.i = title, i
 326     me.url, me.duration = \
 327       episode.source.url_and_duration(episode.tno, i, i + 1)
 328
 329 class Episode (object):
 330   def __init__(me, season, i, neps, title, src, tno = None,
 331                startch = None, endch = None):
 332     me.season = season
 333     me.i, me.neps, me.title = i, neps, title
 334     me.chapters = []
 335     me.source, me.tno = src, tno
 336     me.url, me.duration = src.url_and_duration(tno, startch, endch)
 337   def add_chapter(me, title, j):
 338     ch = Chapter(me, title, j)
 339     me.chapters.append(ch)
 340     return ch
 341   def label(me):
 342     return me.season._eplabel(me.i, me.neps, me.title)
 343
 344 class BaseSeason (object):
 345   def __init__(me, series, implicitp = False):
 346     me.series = series
 347     me.episodes = []
 348     me.implicitp = implicitp
 349     me.ep_i, episodes = 1, []
 350   def add_episode(me, j, neps, title, src, tno, startch, endch):
 351     ep = Episode(me, j, neps, title, src, tno, startch, endch)
 352     me.episodes.append(ep)
 353     src.nuses += neps; me.ep_i += neps
 354     return ep
 355   def _epnames(me, i, neps):
 356     playlist = me.series.playlist
 357     if neps == 1: return playlist.epname, "%d" % i
 358     elif neps == 2: return playlist.epnames, "%d, %d" % (i, i + 1)
 359     else: return playlist.epnames, "%d–%d" % (i, i + neps - 1)
 360
 361 class Season (BaseSeason):
 362   def __init__(me, series, title, i, *args, **kw):
 363     super().__init__(series, *args, **kw)
 364     me.title, me.i = title, i
 365   def _eplabel(me, i, neps, title):
 366     epname, epn = me._epnames(i, neps)
 367     if title is None:
 368       if me.implicitp: label = "%s %s" % (epname, epn)
 369       elif me.title is None: label = "%s %d.%s" % (epname, me.i, epn)
 370       else: label = "%s—%s %s" % (me.title, epname, epn)
 371     else:
 372       if me.implicitp: label = "%s. %s" % (epn, title)
 373       elif me.title is None: label = "%d.%s. %s" % (me.i, epn, title)
 374       else: label = "%s—%s. %s" % (me.title, epn, title)
 375     return label
 376
 377 class MovieSeason (BaseSeason):
 378   def __init__(me, series, title, *args, **kw):
 379     super().__init__(series, *args, **kw)
 380     me.title = title
 381     me.i = None
 382   def add_episode(me, j, neps, title, src, tno, startch, endch):
 383     if me.title is None and title is None:
 384       raise ExpectedError("movie or movie season must have a title")
 385     return super().add_episode(j, neps, title, src, tno, startch, endch)
 386   def _eplabel(me, i, neps, title):
 387     if me.title is None:
 388       label = title
 389     elif title is None:
 390       epname, epn = me._epnames(i, neps)
 391       label = "%s—%s %s" % (me.title, epname, epn)
 392     else:
 393       label = "%s—%s" % (me.title, title)
 394     return label
 395
 396 class Series (object):
 397   def __init__(me, playlist, name, title = None, wantedp = True):
 398     me.playlist = playlist
 399     me.name, me.title = name, title
 400     me.cur_season = None
 401     me.wantedp = wantedp
 402   def _add_season(me, season):
 403     me.cur_season = season
 404   def add_season(me, title, i, implicitp = False):
 405     me._add_season(Season(me, title, i, implicitp))
 406   def add_movies(me, title = None):
 407     me._add_season(MovieSeason(me, title))
 408   def ensure_season(me):
 409     if me.cur_season is None: me.add_season(None, 1, implicitp = True)
 410     return me.cur_season
 411   def end_season(me):
 412     me.cur_season = None
 413
 414 class Playlist (object):
 415   def __init__(me):
 416     me.seasons = []
 417     me.episodes = []
 418     me.epname, me.epnames = "Episode", "Episodes"
 419     me.nseries = 0
 420   def add_episode(me, episode):
 421     me.episodes.append(episode)
 422   def done_season(me):
 423     if me.episodes:
 424       me.seasons.append(me.episodes)
 425       me.episodes = []
 426   def write(me, f):
 427     f.write("#EXTM3U\n")
 428     for season in me.seasons:
 429       f.write("\n")
 430       for ep in season:
 431         label = ep.label()
 432         if me.nseries > 1: label = ep.season.series.title + " " + label
 433         if not ep.chapters:
 434           f.write("#EXTINF:%d,,%s\n%s\n" % (ep.duration, label, ep.url))
 435         else:
 436           for ch in ep.chapters:
 437             f.write("#EXTINF:%d,,%s: %s\n%s\n" %
 438                     (ch.duration, label, ch.title, ch.url))
 439
 440 DEFAULT_EXPVAR = 0.05
 441 R_DURMULT = RX.compile(r""" ^
 442         (\d+ (?: \. \d+)?) x
 443 $ """, RX.X)
 444 R_DUR = RX.compile(r""" ^
 445         (?: (?: (\d+) :)? (\d+) :)? (\d+)
 446         (?: / (\d+ (?: \. \d+)?) \%)?
 447 $ """, RX.X)
 448 def parse_duration(s, base = None, basevar = DEFAULT_EXPVAR):
 449   if base is not None:
 450     m = R_DURMULT.match(s)
 451     if m is not None: return base*float(m.group(1)), basevar
 452   m = R_DUR.match(s)
 453   if not m: raise ExpectedError("invalid duration spec `%s'" % s)
 454   hr, min, sec = map(lambda g: filter(m.group(g), int, 0), [1, 2, 3])
 455   var = filter(m.group(4), lambda x: float(x)/100.0)
 456   if var is None: var = DEFAULT_EXPVAR
 457   return 3600*hr + 60*min + sec, var
 458 def format_duration(d):
 459   if d >= 3600: return "%d:%02d:%02d" % (d//3600, (d//60)%60, d%60)
 460   elif d >= 60: return "%d:%02d" % (d//60, d%60)
 461   else: return "%d s" % d
 462
 463 MODE_UNSET = 0
 464 MODE_SINGLE = 1
 465 MODE_MULTI = 2
 466
 467 class EpisodeListParser (object):
 468
 469   def __init__(me, series_wanted = None, chapters_wanted_p = False):
 470     me._pl = Playlist()
 471     me._cur_episode = me._cur_chapter = None
 472     me._series = {}; me._vdirs = {}; me._audirs = {}; me._isos = {}
 473     me._series_wanted = series_wanted
 474     me._chaptersp = chapters_wanted_p
 475     me._explen, me._expvar = None, DEFAULT_EXPVAR
 476     if series_wanted is None: me._mode = MODE_UNSET
 477     else: me._mode = MODE_MULTI
 478
 479   def _bad_keyval(me, cmd, k, v):
 480     raise ExpectedError("invalid `!%s' option `%s'" %
 481                           (cmd, v if k is None else k))
 482
 483   def _keyvals(me, opts):
 484     if opts is not None:
 485       for kv in opts.split(","):
 486         try: sep = kv.index("=")
 487         except ValueError: yield None, kv
 488         else: yield kv[:sep], kv[sep + 1:]
 489
 490   def _set_mode(me, mode):
 491     if me._mode == MODE_UNSET:
 492       me._mode = mode
 493     elif me._mode != mode:
 494       raise ExpectedError("inconsistent single-/multi-series usage")
 495
 496   def _get_series(me, name):
 497     if name is None:
 498       me._set_mode(MODE_SINGLE)
 499       try: series = me._series[None]
 500       except KeyError:
 501         series = me._series[None] = Series(me._pl, None)
 502         me._pl.nseries += 1
 503     else:
 504       me._set_mode(MODE_MULTI)
 505       series = lookup(me._series, name, "unknown series `%s'" % name)
 506     return series
 507
 508   def _opts_series(me, cmd, opts):
 509     name = None
 510     for k, v in me._keyvals(opts):
 511       if k is None: name = v
 512       else: me._bad_keyval(cmd, k, v)
 513     return me._get_series(name)
 514
 515   def _auto_epsrc(me, series):
 516     dir = lookup(me._vdirs, series.name, "no active video directory")
 517     season = series.ensure_season()
 518     check(season.i is not None, "must use explicit iso for movie seasons")
 519     vseason = lookup(dir.seasons, season.i,
 520                      "season %d not found in video dir `%s'" %
 521                        (season.i, dir.dir))
 522     src = lookup(vseason.episodes, season.ep_i,
 523                  "episode %d.%d not found in video dir `%s'" %
 524                    (season.i, season.ep_i, dir.dir))
 525     return src
 526
 527   def _process_cmd(me, ww):
 528
 529     cmd = ww.nextword(); check(cmd is not None, "missing command")
 530     try: sep = cmd.index(":")
 531     except ValueError: opts = None
 532     else: cmd, opts = cmd[:sep], cmd[sep + 1:]
 533
 534     if cmd == "series":
 535       name = None
 536       for k, v in me._keyvals(opts):
 537         if k is None: name = v
 538         else: me._bad_keyval(cmd, k, v)
 539       check(name is not None, "missing series name")
 540       check(name not in me._series, "series `%s' already defined" % name)
 541       title = ww.rest(); check(title is not None, "missing title")
 542       me._set_mode(MODE_MULTI)
 543       me._series[name] = series = Series(me._pl, name, title,
 544                                          me._series_wanted is None or
 545                                            name in me._series_wanted)
 546       if series.wantedp: me._pl.nseries += 1
 547
 548     elif cmd == "season":
 549       series = me._opts_series(cmd, opts)
 550       w = ww.nextword();
 551       check(w is not None, "missing season number")
 552       if w == "-":
 553         if not series.wantedp: return
 554         series.add_movies(ww.rest())
 555       else:
 556         title = ww.rest(); i = getint(w)
 557         if not series.wantedp: return
 558         series.add_season(ww.rest(), getint(w), implicitp = False)
 559       me._cur_episode = me._cur_chapter = None
 560       me._pl.done_season()
 561
 562     elif cmd == "explen":
 563       w = ww.rest(); check(w is not None, "missing duration spec")
 564       d, v = parse_duration(w)
 565       me._explen = d
 566       if v is not None: me._expvar = v
 567
 568     elif cmd == "epname":
 569       for k, v in me._keyvals(opts): me._bad_keyval("epname", k, v)
 570       name = ww.rest(); check(name is not None, "missing episode name")
 571       try: sep = name.index(",")
 572       except ValueError: names = name + "s"
 573       else: name, names = name[:sep], name[sep + 1:]
 574       me._pl.epname, me._pl.epnames = name, names
 575
 576     elif cmd == "epno":
 577       series = me._opts_series(cmd, opts)
 578       w = ww.rest(); check(w is not None, "missing episode number")
 579       epi = getint(w)
 580       if not series.wantedp: return
 581       series.ensure_season().ep_i = epi
 582
 583     elif cmd == "iso":
 584       series = me._opts_series(cmd, opts)
 585       fn = ww.rest(); check(fn is not None, "missing filename")
 586       if not series.wantedp: return
 587       if fn == "-": forget(me._isos, series.name)
 588       else:
 589         check(OS.path.exists(OS.path.join(ROOT, fn)),
 590               "iso file `%s' not found" % fn)
 591         me._isos[series.name] = VideoDisc(fn)
 592
 593     elif cmd == "vdir":
 594       series = me._opts_series(cmd, opts)
 595       dir = ww.rest(); check(dir is not None, "missing directory")
 596       if not series.wantedp: return
 597       if dir == "-": forget(me._vdirs, series.name)
 598       else: me._vdirs[series.name] = VideoDir(dir)
 599
 600     elif cmd == "adir":
 601       series = me._opts_series(cmd, opts)
 602       dir = ww.rest(); check(dir is not None, "missing directory")
 603       if not series.wantedp: return
 604       if dir == "-": forget(me._audirs, series.name)
 605       else: me._audirs[series.name] = AudioDir(dir)
 606
 607     elif cmd == "displaced":
 608       series = me._opts_series(cmd, opts)
 609       w = ww.rest(); check(w is not None, "missing count"); n = getint(w)
 610       src = me._auto_epsrc(series)
 611       src.nuses += n
 612
 613     else:
 614       raise ExpectedError("unknown command `%s'" % cmd)
 615
 616   def _process_episode(me, ww):
 617
 618     opts = ww.nextword(); check(opts is not None, "missing title/options")
 619     ti = None; sname = None; neps = 1; epi = None; loch = hich = None
 620     explen, expvar, explicitlen = me._explen, me._expvar, False
 621     for k, v in me._keyvals(opts):
 622       if k is None:
 623         if v.isdigit(): ti = int(v)
 624         elif v == "-": ti = "-"
 625         else: sname = v
 626       elif k == "s": sname = v
 627       elif k == "n": neps = getint(v)
 628       elif k == "ep": epi = getint(v)
 629       elif k == "l":
 630         if v == "-": me._explen, me._expvar = None, DEFAULT_EXPVAR
 631         else:
 632           explen, expvar = parse_duration(v, explen, expvar)
 633           explicitlen = True
 634       elif k == "ch":
 635         try: sep = v.index("-")
 636         except ValueError: loch, hich = getint(v), None
 637         else: loch, hich = getint(v[:sep]), getint(v[sep + 1:]) + 1
 638       else: raise ExpectedError("unknown episode option `%s'" % k)
 639     check(ti is not None, "missing title number")
 640     series = me._get_series(sname)
 641     me._cur_chapter = None
 642
 643     title = ww.rest()
 644     if not series.wantedp: return
 645     season = series.ensure_season()
 646     if epi is None: epi = season.ep_i
 647
 648     if ti == "-":
 649       check(season.implicitp, "audio source, but explicit season")
 650       dir = lookup(me._audirs, series.name,
 651                    "no title, and no audio directory")
 652       src = lookup(dir.episodes, season.ep_i,
 653                    "episode %d not found in audio dir `%s'" % (epi, dir.dir))
 654
 655     else:
 656       try: src = me._isos[series.name]
 657       except KeyError: src = me._auto_epsrc(series)
 658
 659     episode = season.add_episode(epi, neps, title, src, ti, loch, hich)
 660
 661     if episode.duration != -1 and explen is not None:
 662       if not explicitlen: explen *= neps
 663       if not explen*(1 - expvar) <= episode.duration <= explen*(1 + expvar):
 664         if season.i is None: epid = "episode %d" % epi
 665         else: epid = "episode %d.%d" % (season.i, epi)
 666         raise ExpectedError \
 667           ("%s duration %s %g%% > %g%% from expected %s" %
 668              (epid, format_duration(episode.duration),
 669               abs(100*(episode.duration - explen)/explen), 100*expvar,
 670               format_duration(explen)))
 671     me._pl.add_episode(episode)
 672     me._cur_episode = episode
 673
 674   def _process_chapter(me, ww):
 675     check(me._cur_episode is not None, "no current episode")
 676     check(me._cur_episode.source.CHAPTERP,
 677           "episode source doesn't allow chapters")
 678     if me._chaptersp:
 679       if me._cur_chapter is None: i = 1
 680       else: i = me._cur_chapter.i + 1
 681       me._cur_chapter = me._cur_episode.add_chapter(ww.rest(), i)
 682
 683   def parse_file(me, fn):
 684     with location(FileLocation(fn, 0)) as floc:
 685       with open(fn, "r") as f:
 686         for line in f:
 687           floc.stepline()
 688           sline = line.lstrip()
 689           if sline == "" or sline.startswith(";"): continue
 690
 691           if line.startswith("!"): me._process_cmd(Words(line[1:]))
 692           elif not line[0].isspace(): me._process_episode(Words(line))
 693           else: me._process_chapter(Words(line))
 694     me._pl.done_season()
 695
 696   def done(me):
 697     discs = set()
 698     for name, vdir in me._vdirs.items():
 699       if not me._series[name].wantedp: continue
 700       for s in vdir.seasons.values():
 701         for d in s.episodes.values():
 702           discs.add(d)
 703     for adir in me._audirs.values():
 704       for d in adir.episodes.values():
 705         discs.add(d)
 706     for d in sorted(discs, key = lambda d: d.fn):
 707       if d.neps is not None and d.neps != d.nuses:
 708         raise ExpectedError("disc `%s' has %d episodes, used %d times" %
 709                             (d.fn, d.neps, d.nuses))
 710     return me._pl
 711
 712 ROOT = "/mnt/dvd/archive/"
 713
 714 op = OP.OptionParser \
 715   (usage = "%prog [-c] [-s SERIES] EPLS",
 716    description = "Generate M3U playlists from an episode list.")
 717 op.add_option("-c", "--chapters",
 718               dest = "chaptersp", action = "store_true", default = False,
 719               help = "Output individual chapter names")
 720 op.add_option("-s", "--series",
 721               dest = "series", type = "str", default = None,
 722               help = "Output only the listed SERIES (comma-separated)")
 723 opts, argv = op.parse_args()
 724 if len(argv) != 1: op.print_usage(file = SYS.stderr); SYS.exit(2)
 725 if opts.series is None:
 726   series_wanted = None
 727 else:
 728   series_wanted = set()
 729   for name in opts.series.split(","): series_wanted.add(name)
 730 try:
 731   ep = EpisodeListParser(series_wanted, opts.chaptersp)
 732   ep.parse_file(argv[0])
 733   pl = ep.done()
 734   pl.write(SYS.stdout)
 735 except (ExpectedError, IOError, OSError) as e:
 736   LOC.report(e)
 737   SYS.exit(2)