This file is indexed.

/usr/bin/trackcat is in audiotools 3.1.1-1build1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
#!/usr/bin/python3

# Audio Tools, a module and set of tools for manipulating audio data
# Copyright (C) 2007-2015  Brian Langenberger

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA


import sys
import os
import os.path
import audiotools
import audiotools.ui
import audiotools.text as _
import termios


def merge_metadatas(metadatas):
    """given a list of MetaData objects, or Nones,
    returns a single MetaData object
    containing only fields that are the same across all objects
    or returns None if all MetaData objects are None"""

    track_metadatas = [m for m in metadatas if m is not None]

    if len(track_metadatas) == 0:
        return None
    elif len(track_metadatas) == 1:
        return track_metadatas[0]
    else:
        merged = track_metadatas[0]
        for to_merge in track_metadatas[1:]:
            merged = merged.intersection(to_merge)

        return merged


if (__name__ == '__main__'):
    import argparse

    parser = argparse.ArgumentParser(description=_.DESCRIPTION_TRACKCAT)

    parser.add_argument("--version",
                        action="version",
                        version="Python Audio Tools %s" % (audiotools.VERSION))

    parser.add_argument("-I", "--interactive",
                        action="store_true",
                        default=False,
                        dest="interactive",
                        help=_.OPT_INTERACTIVE_OPTIONS)

    parser.add_argument("--cue",
                        dest="cuesheet",
                        metavar="FILENAME",
                        help=_.OPT_CUESHEET_TRACKCAT)

    parser.add_argument("--add-cue",
                        action="store_true",
                        default=False,
                        dest="add_cuesheet",
                        help=_.OPT_ADD_CUESHEET_TRACKCAT)

    parser.add_argument("-V", "--verbose",
                        dest="verbosity",
                        choices=audiotools.VERBOSITY_LEVELS,
                        default=audiotools.DEFAULT_VERBOSITY,
                        help=_.OPT_VERBOSE)

    conversion = parser.add_argument_group(_.OPT_CAT_ENCODING)

    conversion.add_argument("-o", "--output",
                            dest="filename",
                            metavar="FILE",
                            help=_.OPT_OUTPUT_TRACKCAT)

    conversion.add_argument(
        "-t", "--type",
        dest="type",
        choices=sorted(list(t.NAME for t in audiotools.AVAILABLE_TYPES
                            if t.supports_from_pcm()) + ["help"]),
        help=_.OPT_TYPE)

    conversion.add_argument("-q", "--quality",
                            dest="quality",
                            help=_.OPT_QUALITY)

    lookup = parser.add_argument_group(_.OPT_CAT_CD_LOOKUP)

    lookup.add_argument("-M", "--metadata-lookup",
                        action="store_true",
                        default=False,
                        dest="metadata_lookup",
                        help=_.OPT_METADATA_LOOKUP)

    lookup.add_argument("--musicbrainz-server",
                        dest="musicbrainz_server",
                        default=audiotools.MUSICBRAINZ_SERVER,
                        metavar="HOSTNAME")

    lookup.add_argument("--musicbrainz-port",
                        type=int,
                        dest="musicbrainz_port",
                        default=audiotools.MUSICBRAINZ_PORT,
                        metavar="PORT")

    lookup.add_argument("--no-musicbrainz",
                        action="store_false",
                        dest="use_musicbrainz",
                        default=audiotools.MUSICBRAINZ_SERVICE,
                        help=_.OPT_NO_MUSICBRAINZ)

    lookup.add_argument("--freedb-server",
                        dest="freedb_server",
                        default=audiotools.FREEDB_SERVER,
                        metavar="HOSTNAME")

    lookup.add_argument("--freedb-port",
                        type=int,
                        dest="freedb_port",
                        default=audiotools.FREEDB_PORT,
                        metavar="PORT")

    lookup.add_argument("--no-freedb",
                        action="store_false",
                        dest="use_freedb",
                        default=audiotools.FREEDB_SERVICE,
                        help=_.OPT_NO_FREEDB)

    lookup.add_argument("-D", "--default",
                        dest="use_default",
                        action="store_true",
                        default=False,
                        help=_.OPT_DEFAULT)

    parser.add_argument("filenames",
                        metavar="FILENAME",
                        nargs="+",
                        help=_.OPT_INPUT_FILENAME)

    options = parser.parse_args()

    msg = audiotools.Messenger(options.verbosity == "quiet")

    # ensure interactive mode is available, if selected
    if options.interactive and (not audiotools.ui.AVAILABLE):
        audiotools.ui.not_available_message(msg)
        sys.exit(1)

    # grab the list of AudioFile objects we are converting from
    audiofiles = []
    input_filenames = set()
    for filename in map(audiotools.Filename, options.filenames):
        if filename in input_filenames:
            msg.warning(_.ERR_DUPLICATE_FILE % (filename,))
        input_filenames.add(filename)
        try:
            audiofile = audiotools.open(str(filename))
            if audiofile.__class__.supports_to_pcm():
                audiofiles.append(audiofile)
            else:
                msg.warning(_.ERR_UNSUPPORTED_TO_PCM %
                            {"filename": filename, "type": audiofile.NAME})
        except audiotools.UnsupportedFile:
            msg.warning(_.ERR_UNSUPPORTED_FILE % (filename,))
        except audiotools.InvalidFile as err:
            msg.warning(str(err))
        except IOError:
            msg.warning(_.ERR_OPEN_IOERROR % (filename,))

    # perform some option sanity checking
    if len(audiofiles) < 1:
        msg.error(_.ERR_FILES_REQUIRED)
        sys.exit(1)

    if len({f.sample_rate() for f in audiofiles}) != 1:
        msg.error(_.ERR_SAMPLE_RATE_MISMATCH)
        sys.exit(1)

    if len({f.channels() for f in audiofiles}) != 1:
        msg.error(_.ERR_CHANNEL_COUNT_MISMATCH)
        sys.exit(1)

    if len({int(f.channel_mask()) for f in audiofiles}) != 1:
        msg.error(_.ERR_CHANNEL_MASK_MISMATCH)
        sys.exit(1)

    if len({f.bits_per_sample() for f in audiofiles}) != 1:
        msg.error(_.ERR_BPS_MISMATCH)
        sys.exit(1)

    if options.filename is None:
        msg.error(_.ERR_NO_OUTPUT_FILE)
        sys.exit(1)
    else:
        output_filename = audiotools.Filename(options.filename)
        if output_filename in input_filenames:
            msg.error(_.ERR_OUTPUT_IS_INPUT % (output_filename,))
            sys.exit(1)

    # get the AudioFile class we are converted to
    if options.type == 'help':
        import audiotools.ui
        audiotools.ui.show_available_formats(msg)
        sys.exit(0)
    elif options.type is not None:
        AudioType = audiotools.TYPE_MAP[options.type]
    else:
        if options.filename is not None:
            try:
                AudioType = audiotools.filename_to_type(options.filename)
            except audiotools.UnknownAudioType as exp:
                exp.error_msg(msg)
                sys.exit(1)
        else:
            AudioType = audiotools.TYPE_MAP[audiotools.DEFAULT_TYPE]

    if not AudioType.supports_from_pcm():
        msg.error(_.ERR_UNSUPPORTED_FROM_PCM % {"type": AudioType.NAME})
        sys.exit(1)

    # ensure the selected compression is compatible with that class
    if options.quality == 'help':
        import audiotools.ui
        audiotools.ui.show_available_qualities(msg, AudioType)
        sys.exit(0)
    elif options.quality is None:
        options.quality = audiotools.__default_quality__(AudioType.NAME)
    elif options.quality not in AudioType.COMPRESSION_MODES:
        msg.error(_.ERR_UNSUPPORTED_COMPRESSION_MODE %
                  {"quality": options.quality,
                   "type": AudioType.NAME})
        sys.exit(1)

    # if embedding a cuesheet, try to read it before doing any work
    if options.cuesheet is not None:
        try:
            cuesheet = audiotools.read_sheet(options.cuesheet)
        except audiotools.SheetException as err:
            msg.error(err)
            sys.exit(1)

        # ensure cuesheet will embed properly
        if not cuesheet.image_formatted():
            msg.error(_.ERR_CUE_INVALID_FORMAT)
            sys.exit(1)

        if ((cuesheet.pre_gap() > 0) and
            (audiofiles[0].seconds_length() == cuesheet.pre_gap())):

            if len(cuesheet) != (len(audiofiles) - 1):
                msg.error(_.ERR_CUE_INSUFFICIENT_TRACKS)
                sys.exit(1)

            for (input_track, cuesheet_track) in zip(audiofiles[1:],
                                                     cuesheet.track_numbers()):
                track_length = cuesheet.track_length(cuesheet_track)
                if ((track_length is not None) and
                    (track_length != input_track.seconds_length())):
                    msg.error(_.ERR_CUE_LENGTH_MISMATCH % (cuesheet_track))
                    sys.exit(1)

            preserving_pre_gap = True
        else:
            if len(cuesheet) != len(audiofiles):
                msg.error(_.ERR_CUE_INSUFFICIENT_TRACKS)
                sys.exit(1)

            for (input_track, cuesheet_track) in zip(audiofiles,
                                                     cuesheet.track_numbers()):
                track_length = cuesheet.track_length(cuesheet_track)
                if ((track_length is not None) and
                    (track_length != input_track.seconds_length())):
                    msg.error(_.ERR_CUE_LENGTH_MISMATCH % (cuesheet_track))
                    sys.exit(1)

            preserving_pre_gap = False

        input_filenames.add(audiotools.Filename(options.cuesheet))
    elif options.add_cuesheet is not None:
        if len(audiofiles) <= (99 if AudioType is not audiotools.FlacAudio
                               else 254):
            cuesheet = audiotools.Sheet.from_tracks(
                audiofiles,
                filename=output_filename.__unicode__())
        else:
            msg.error(_.ERR_TOO_MANY_CUESHEET_FILES)
            sys.exit(1)
    else:
        cuesheet = None

    # constuct a MetaData object from our audiofiles
    # which may be None if there is no metadata
    metadata = merge_metadatas([t.get_metadata() for t in audiofiles])

    if not options.metadata_lookup:
        metadata_choices = [metadata]
    else:
        # perform CD lookup for existing files
        metadata_choices = [
            merge_metadatas(choice) for choice in
            audiotools.track_metadata_lookup(
                audiofiles=audiofiles[1:] if preserving_pre_gap else audiofiles,
                musicbrainz_server=options.musicbrainz_server,
                musicbrainz_port=options.musicbrainz_port,
                freedb_server=options.freedb_server,
                freedb_port=options.freedb_port,
                use_musicbrainz=options.use_musicbrainz,
                use_freedb=options.use_freedb)]

        # and prepend metadata from existing files as an option, if any
        if metadata is not None:
            metadata_choices.insert(0, metadata)

    if options.interactive:
        # pick options using interactive widget
        output_widget = audiotools.ui.SingleOutputFiller(
            track_label=_.LAB_TRACKCAT_INPUT % (len(audiofiles)),
            metadata_choices=metadata_choices,
            input_filenames=input_filenames,
            output_file=str(output_filename),
            output_class=AudioType,
            quality=options.quality,
            completion_label=_.LAB_TRACKCAT_APPLY)
        loop = audiotools.ui.urwid.MainLoop(
            output_widget,
            audiotools.ui.style(),
            screen=audiotools.ui.Screen(),
            unhandled_input=output_widget.handle_text,
            pop_ups=True)
        try:
            loop.run()
            msg.ansi_clearscreen()
        except (termios.error, IOError):
            msg.error(_.ERR_TERMIOS_ERROR)
            msg.info(_.ERR_TERMIOS_SUGGESTION)
            msg.info(audiotools.ui.xargs_suggestion(sys.argv))
            sys.exit(1)

        if not output_widget.cancelled():
            (output_class,
             output_filename,
             output_quality,
             metadata) = output_widget.output_track()
        else:
            sys.exit(0)
    else:
        # pick options without using GUI
        output_class = AudioType
        output_quality = options.quality
        metadata = audiotools.ui.select_metadata(
            [[m] for m in metadata_choices],
            msg,
            options.use_default)[0]

    # perform track concatenation using options
    progress = audiotools.SingleProgressDisplay(
        msg, output_filename.__unicode__())

    try:
        if (cuesheet is not None) and (cuesheet.pre_gap() > 0):
            # prepend null pre-gap samples to start of stream
            # if indicated by cuesheet

            if preserving_pre_gap:
                pcmreader = \
                    audiotools.PCMCat([af.to_pcm() for af in audiofiles])

                total_pcm_frames = sum(af.total_frames() for af in audiofiles)
            else:
                from audiotools.decoders import SameSample

                pre_gap_frames = int(cuesheet.pre_gap() *
                                     audiofiles[0].sample_rate())

                sample_rate = audiofiles[0].sample_rate()
                channels = audiofiles[0].channels()
                channel_mask = int(audiofiles[0].channel_mask())
                bits_per_sample = audiofiles[0].bits_per_sample()

                pcmreader = audiotools.PCMCat(
                    [SameSample(sample=0,
                                total_pcm_frames=pre_gap_frames,
                                sample_rate=sample_rate,
                                channels=channels,
                                channel_mask=channel_mask,
                                bits_per_sample=bits_per_sample)] +
                    [af.to_pcm() for af in audiofiles])

                total_pcm_frames = \
                    (pre_gap_frames +
                     sum(af.total_frames() for af in audiofiles))
        else:
            pcmreader = audiotools.PCMCat([af.to_pcm() for af in audiofiles])

            total_pcm_frames = sum(af.total_frames() for af in audiofiles)

        encoded = output_class.from_pcm(
            str(output_filename),
            audiotools.PCMReaderProgress(pcmreader,
                                         total_pcm_frames,
                                         progress.update),
            output_quality,
            total_pcm_frames=total_pcm_frames)

        encoded.set_metadata(metadata)

        progress.clear_rows()

        if cuesheet is not None:
            encoded.set_cuesheet(cuesheet)

    except audiotools.EncodingError as err:
        progress.clear_rows()
        msg.error(_.ERR_ENCODING_ERROR % (output_filename,))
        sys.exit(1)
    except audiotools.InvalidFilenameFormat as err:
        progress.clear_rows()
        msg.error(err)
        sys.exit(1)
    except KeyboardInterrupt:
        progress.clear_rows()
        msg.error(_.ERR_CANCELLED)
        try:
            os.unlink(str(output_filename))
        except OSError:
            pass
        sys.exit(1)