PlayableDirectory.entries() - Code Metrics - Inspection of "[RELEASE] 0.5 (#6)" - ergoithz/browsepy - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( d6e75b...42acea )

by Felipe A.

created 2016-11-24 17:06 UTC

PlayableDirectory.entries() A

↳ Parent: PlayableDirectory

Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	3
dl	0
loc	4
rs	10
c	0
b	0
f	0


import sys
import codecs
import os.path
import warnings

from browsepy.compat import range, PY_LEGACY
from browsepy.file import Node, File, Directory, \
                          underscore_replace, check_under_base


if PY_LEGACY:
    import ConfigParser as configparser
else:
    import configparser

ConfigParserBase = (
    configparser.SafeConfigParser
    if hasattr(configparser, 'SafeConfigParser') else
    configparser.ConfigParser
    )


class PLSFileParser(object):
    '''
    ConfigParser wrapper accepting fallback on get for convenience.

    This wraps instead of inheriting due ConfigParse being classobj on python2.
    '''
    NOT_SET = type('NotSetType', (object,), {})
    parser_class = (
        configparser.SafeConfigParser
        if hasattr(configparser, 'SafeConfigParser') else
        configparser.ConfigParser
        )

    def __init__(self, path):
        with warnings.catch_warnings():
            # We already know about SafeConfigParser deprecation!
            warnings.filterwarnings('ignore', category=DeprecationWarning)
            self._parser = self.parser_class()
        self._parser.read(path)

    def getint(self, section, key, fallback=NOT_SET):
        try:
            return self._parser.getint(section, key)
        except (configparser.NoOptionError, ValueError):
            if fallback is self.NOT_SET:
                raise
            return fallback

    def get(self, section, key, fallback=NOT_SET):
        try:
            return self._parser.get(section, key)
        except (configparser.NoOptionError, ValueError):
            if fallback is self.NOT_SET:
                raise
            return fallback


class PlayableBase(File):
    extensions = {
        'mp3': 'audio/mpeg',
        'ogg': 'audio/ogg',
        'wav': 'audio/wav',
        'm3u': 'audio/x-mpegurl',
        'm3u8': 'audio/x-mpegurl',
        'pls': 'audio/x-scpls',
    }

    @classmethod
    def extensions_from_mimetypes(cls, mimetypes):
        mimetypes = frozenset(mimetypes)
        return {
            ext: mimetype
            for ext, mimetype in cls.extensions.items()
            if mimetype in mimetypes
        }

    @classmethod
    def detect(cls, node, os_sep=os.sep):
        basename = node.path.rsplit(os_sep)[-1]
        if '.' in basename:
            ext = basename.rsplit('.')[-1]
            return cls.extensions.get(ext, None)
        return None


class PlayableFile(PlayableBase):
    mimetypes = ['audio/mpeg', 'audio/ogg', 'audio/wav']
    extensions = PlayableBase.extensions_from_mimetypes(mimetypes)
    media_map = {mime: ext for ext, mime in extensions.items()}

    def __init__(self, **kwargs):
        self.duration = kwargs.pop('duration', None)
        self.title = kwargs.pop('title', None)
        super(PlayableFile, self).__init__(**kwargs)

    @property
    def title(self):
        return self._title or self.name

    @title.setter
    def title(self, title):
        self._title = title

    @property
    def media_format(self):
        return self.media_map[self.type]


class PlayListFile(PlayableBase):
    playable_class = PlayableFile
    mimetypes = ['audio/x-mpegurl', 'audio/x-mpegurl', 'audio/x-scpls']
    extensions = PlayableBase.extensions_from_mimetypes(mimetypes)

    @classmethod
    def from_urlpath(cls, path, app=None):
        original = Node.from_urlpath(path, app)
        if original.mimetype == PlayableDirectory.mimetype:
            return PlayableDirectory(original.path, original.app)
        elif original.mimetype == M3UFile.mimetype:
            return M3UFile(original.path, original.app)
        if original.mimetype == PLSFile.mimetype:
            return PLSFile(original.path, original.app)
        return original

    def normalize_playable_path(self, path):
        if '://' in path:
            return path
        if not os.path.isabs(path):
            return os.path.normpath(os.path.join(self.parent.path, path))
        if check_under_base(path, self.app.config['directory_base']):
            return os.path.normpath(path)
        return None

    def _entries(self):
        return
        yield

    def entries(self):
        for file in self._entries():
            if PlayableFile.detect(file):
                yield file


class PLSFile(PlayListFile):
    ini_parser_class = PLSFileParser
    maxsize = getattr(sys, 'maxsize', None) or getattr(sys, 'maxint', None)
    mimetype = 'audio/x-scpls'
    extensions = PlayableBase.extensions_from_mimetypes([mimetype])

    def _entries(self):
        parser = self.ini_parser_class(self.path)
        maxsize = parser.getint('playlist', 'NumberOfEntries', None)
        for i in range(1, self.maxsize if maxsize is None else maxsize + 1):
            path = parser.get('playlist', 'File%d' % i, None)
            if not path:
                if maxsize:
                    continue
                break
            path = self.normalize_playable_path(path)
            if not path:
                continue
            yield self.playable_class(
                path=path,
                app=self.app,
                duration=parser.getint(
                    'playlist', 'Length%d' % i,
                    None
                    ),
                title=parser.get(
                    'playlist',
                    'Title%d' % i,
                    None
                    ),
                )


class M3UFile(PlayListFile):
    mimetype = 'audio/x-mpegurl'
    extensions = PlayableBase.extensions_from_mimetypes([mimetype])

    def _iter_lines(self):
        prefix = '#EXTM3U\n'
        encoding = 'utf-8' if self.path.endswith('.m3u8') else 'ascii'
        with codecs.open(
          self.path, 'r',
          encoding=encoding,
          errors=underscore_replace
          ) as f:
            if f.read(len(prefix)) != prefix:
                f.seek(0)
            for line in f:
                line = line.rstrip('\n')
                if line:
                    yield line

    def _entries(self):
        data = {}
        for line in self._iter_lines():
            if line.startswith('#EXTINF:'):
                duration, title = line.split(',', 1)
                data['duration'] = None if duration == '-1' else int(duration)
                data['title'] = title
            if not line:
                continue
            path = self.normalize_playable_path(line)
            if path:
                yield self.playable_class(path=path, app=self.app, **data)
            data.clear()


class PlayableDirectory(Directory):
    file_class = PlayableFile
    name = ''

    @property
    def parent(self):
        return super(PlayableDirectory, self)  # parent is self as directory

    @classmethod
    def detect(cls, node):
        if node.is_directory:
            for file in node._listdir():
                if PlayableFile.detect(file):
                    return cls.mimetype
        return None

    def entries(self):
        for file in super(PlayableDirectory, self)._listdir():
            if PlayableFile.detect(file):
                yield file


def detect_playable_mimetype(path, os_sep=os.sep):
    basename = path.rsplit(os_sep)[-1]
    if '.' in basename:
        ext = basename.rsplit('.')[-1]
        return PlayableBase.extensions.get(ext, None)
    return None


1
2			import sys
3			import codecs
4			import os.path
5			import warnings
6
7			from browsepy.compat import range, PY_LEGACY
8			from browsepy.file import Node, File, Directory, \
9			underscore_replace, check_under_base
10
11
12			if PY_LEGACY:
13			import ConfigParser as configparser
14			else:
15			import configparser
16
17			ConfigParserBase = (
18			configparser.SafeConfigParser
19			if hasattr(configparser, 'SafeConfigParser') else
20			configparser.ConfigParser
21			)
22
23
24			class PLSFileParser(object):
25			'''
26			ConfigParser wrapper accepting fallback on get for convenience.
27
28			This wraps instead of inheriting due ConfigParse being classobj on python2.
29			'''
30			NOT_SET = type('NotSetType', (object,), {})
31			parser_class = (
32			configparser.SafeConfigParser
33			if hasattr(configparser, 'SafeConfigParser') else
34			configparser.ConfigParser
35			)
36
37			def __init__(self, path):
38			with warnings.catch_warnings():
39			# We already know about SafeConfigParser deprecation!
40			warnings.filterwarnings('ignore', category=DeprecationWarning)
41			self._parser = self.parser_class()
42			self._parser.read(path)
43
44			def getint(self, section, key, fallback=NOT_SET):
45			try:
46			return self._parser.getint(section, key)
47			except (configparser.NoOptionError, ValueError):
48			if fallback is self.NOT_SET:
49			raise
50			return fallback
51
52			def get(self, section, key, fallback=NOT_SET):
53			try:
54			return self._parser.get(section, key)
55			except (configparser.NoOptionError, ValueError):
56			if fallback is self.NOT_SET:
57			raise
58			return fallback
59
60
61			class PlayableBase(File):
62			extensions = {
63			'mp3': 'audio/mpeg',
64			'ogg': 'audio/ogg',
65			'wav': 'audio/wav',
66			'm3u': 'audio/x-mpegurl',
67			'm3u8': 'audio/x-mpegurl',
68			'pls': 'audio/x-scpls',
69			}
70
71			@classmethod
72			def extensions_from_mimetypes(cls, mimetypes):
73			mimetypes = frozenset(mimetypes)
74			return {
75			ext: mimetype
76			for ext, mimetype in cls.extensions.items()
77			if mimetype in mimetypes
78			}
79
80			@classmethod
81			def detect(cls, node, os_sep=os.sep):
82			basename = node.path.rsplit(os_sep)[-1]
83			if '.' in basename:
84			ext = basename.rsplit('.')[-1]
85			return cls.extensions.get(ext, None)
86			return None
87
88
89			class PlayableFile(PlayableBase):
90			mimetypes = ['audio/mpeg', 'audio/ogg', 'audio/wav']
91			extensions = PlayableBase.extensions_from_mimetypes(mimetypes)
92			media_map = {mime: ext for ext, mime in extensions.items()}
93
94			def __init__(self, **kwargs):
95			self.duration = kwargs.pop('duration', None)
96			self.title = kwargs.pop('title', None)
97			super(PlayableFile, self).__init__(**kwargs)
98
99			@property
100			def title(self):
101			return self._title or self.name
102
103			@title.setter
104			def title(self, title):
105			self._title = title
106
107			@property
108			def media_format(self):
109			return self.media_map[self.type]
110
111
112			class PlayListFile(PlayableBase):
113			playable_class = PlayableFile
114			mimetypes = ['audio/x-mpegurl', 'audio/x-mpegurl', 'audio/x-scpls']
115			extensions = PlayableBase.extensions_from_mimetypes(mimetypes)
116
117			@classmethod
118			def from_urlpath(cls, path, app=None):
119			original = Node.from_urlpath(path, app)
120			if original.mimetype == PlayableDirectory.mimetype:
121			return PlayableDirectory(original.path, original.app)
122			elif original.mimetype == M3UFile.mimetype:
123			return M3UFile(original.path, original.app)
124			if original.mimetype == PLSFile.mimetype:
125			return PLSFile(original.path, original.app)
126			return original
127
128			def normalize_playable_path(self, path):
129			if '://' in path:
130			return path
131			if not os.path.isabs(path):
132			return os.path.normpath(os.path.join(self.parent.path, path))
133			if check_under_base(path, self.app.config['directory_base']):
134			return os.path.normpath(path)
135			return None
136
137			def _entries(self):
138			return
139			yield
140
141			def entries(self):
142			for file in self._entries():
143			if PlayableFile.detect(file):
144			yield file
145
146
147			class PLSFile(PlayListFile):
148			ini_parser_class = PLSFileParser
149			maxsize = getattr(sys, 'maxsize', None) or getattr(sys, 'maxint', None)
150			mimetype = 'audio/x-scpls'
151			extensions = PlayableBase.extensions_from_mimetypes([mimetype])
152
153			def _entries(self):
154			parser = self.ini_parser_class(self.path)
155			maxsize = parser.getint('playlist', 'NumberOfEntries', None)
156			for i in range(1, self.maxsize if maxsize is None else maxsize + 1):
157			path = parser.get('playlist', 'File%d' % i, None)
158			if not path:
159			if maxsize:
160			continue
161			break
162			path = self.normalize_playable_path(path)
163			if not path:
164			continue
165			yield self.playable_class(
166			path=path,
167			app=self.app,
168			duration=parser.getint(
169			'playlist', 'Length%d' % i,
170			None
171			),
172			title=parser.get(
173			'playlist',
174			'Title%d' % i,
175			None
176			),
177			)
178
179
180			class M3UFile(PlayListFile):
181			mimetype = 'audio/x-mpegurl'
182			extensions = PlayableBase.extensions_from_mimetypes([mimetype])
183
184			def _iter_lines(self):
185			prefix = '#EXTM3U\n'
186			encoding = 'utf-8' if self.path.endswith('.m3u8') else 'ascii'
187			with codecs.open(
188			self.path, 'r',
189			encoding=encoding,
190			errors=underscore_replace
191			) as f:
192			if f.read(len(prefix)) != prefix:
193			f.seek(0)
194			for line in f:
195			line = line.rstrip('\n')
196			if line:
197			yield line
198
199			def _entries(self):
200			data = {}
201			for line in self._iter_lines():
202			if line.startswith('#EXTINF:'):
203			duration, title = line.split(',', 1)
204			data['duration'] = None if duration == '-1' else int(duration)
205			data['title'] = title
206			if not line:
207			continue
208			path = self.normalize_playable_path(line)
209			if path:
210			yield self.playable_class(path=path, app=self.app, **data)
211			data.clear()
212
213
214			class PlayableDirectory(Directory):
215			file_class = PlayableFile
216			name = ''
217
218			@property
219			def parent(self):
220			return super(PlayableDirectory, self) # parent is self as directory
221
222			@classmethod
223			def detect(cls, node):
224			if node.is_directory:
225			for file in node._listdir():
226			if PlayableFile.detect(file):
227			return cls.mimetype
228			return None
229
230			def entries(self):
231			for file in super(PlayableDirectory, self)._listdir():
232			if PlayableFile.detect(file):
233			yield file
234
235
236			def detect_playable_mimetype(path, os_sep=os.sep):
237			basename = path.rsplit(os_sep)[-1]
238			if '.' in basename:
239			ext = basename.rsplit('.')[-1]
240			return PlayableBase.extensions.get(ext, None)
241			return None
242

ergoithz / browsepy

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PlayableDirectory.entries() A

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