Привет всем меломанам и остальным welinux'оидам, которые сейчас читают этот пост.
Наверняка не только я один столкнулся с проблемой вызванной необходимостью обновлять музыку у себя на телефоне/плеере.
Под катом я раскажу как я решил эту проблему для себя.
С одной стороны, какая тут проблема? Подключил устройство, удалил немного старых файлов, записал немного новых и все дела.
С другой стороны, если вы слушаете музыку так же как я (всю и в разброс), то зачастую возникает проблема выбора, что удалять что записать и т.д.
В таких ситуациях когда практически одинаково хочешь и того и другого и нельзя выбрать оба сразу (в виду ограниченного размера диска) проще положиться на random.
Хоть я и люблю слушать музыку, но обновлением ее на плеере вручную не всегда охота заниматься, поэтому я написал небольшой скриптик делающий это за меня.
Опции которые принимает скрипт это каталог содержащий всю коллекцию вашей музыки и каталог с музыкой на вашем медиа устройстве.
Так же можно передать параметры:
-f FILLING_PERCENT - процент заполнения диска. Т.е. скрипт никогда не наполнит диск музыкой больше определенного процента. Это полезно если вы ходите иметь некоторый процент доступного пространства для других файлов.
Значение по-умолчанию 80.
-r REFRESHING_PERCENT - процент обновления для старых файлов на устройстве, т.е. сколько музыки (в процентах) будет удалено из устройства перед записью. Значение по-умолчанию 30.
-s, --follow-simlinks - позволяет переходить по ссылкам при поиске музыки. (Отдельное спасибо
mrpot за идею)
Т.к. местами скрипт использует *nix специфичные команды, запускаться он будет только в linux среде, но любой желающий может поменять это поведение.
Пример использования:
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python update_music.py -r 30 -f 50 /home/user/Music /media/My_MP3player/Media/Music
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А вот и сам скрипт.
Версия для python 2.6.x-2.7.x update_mysic2.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Created with hope to be useful.
import subprocess
import shutil
import os
if os.sys.platform != "linux2":
print "This code for linux platform only!"
exit()
class Song:
import os
def __init__(self, path, collection=None):
self.file_name = os.path.basename(path)
self.collection = collection
self.size = 0
self.full_path = path
self.folder = None
self.type = None
self.size = os.path.getsize(self.full_path)
if self.collection:
path = self.full_path.split(self.collection)[1].lstrip(os.path.sep)
self.folder = os.path.dirname(path)
else:
self.folder = os.path.dirname(self.full_path)
self.type = os.path.splitext(self.file_name)[-1].lstrip('.')
class MusicCollection:
import os
def __init__(self, path, followlinks=False):
self.path = path
self.Songs = []
self.CollectionSize=0
self.allowed_types = ['mp3', 'wma', 'ogg']
self.follow = followlinks
self.scan()
def scan(self):
# we need reinit collection info if we run this outside __init__
self.CollectionSize = 0
self.Songs = []
for root, dirs, files in os.walk(self.path, followlinks=self.follow):
for file in files:
songPath = os.path.join(root, file)
s = Song(songPath, self.path)
if s.type in self.allowed_types:
self.Songs.append(s)
self.CollectionSize += s.size
def add_song(self, song):
self.Songs.append(song)
self.CollectionSize += song.size
def del_song(self, song):
self.Songs.remove(song)
self.CollectionSize -= song.size
def getMount(path):
path = os.path.abspath(path)
while path != os.path.sep:
if os.path.ismount(path):
return path
path = os.path.abspath(os.path.join(path, os.pardir))
return path
def delEmptyDir(path):
for root, dirs, files in os.walk(path):
if not files and not dirs:
# we actually don't need to remove portable music directory
if root != path:
#print 'Deleting empty:', root
os.removedirs(root)
elif not files:
for dir in dirs:
delEmptyDir(os.path.join(root, dir))
def deleteFile(path):
d = os.remove(path)
def copyFile(path, dest):
c = shutil.copy2(path, dest)
def main(*args):
mountPoint = getMount(portableCollection)
if mountPoint == getMount(fullCollection) or mountPoint == '/':
print 'Your portable device not mounted! ' \
'So please mount it and try again.'
exit()
# checking folders to exist
for folder in [fullCollection, portableCollection]:
if not os.path.isdir(folder):
print "Can't find folder %s" % folder
exit()
# disk free check
df = subprocess.Popen(['df'], stdout=subprocess.PIPE).communicate()[0].strip()
for line in df.decode("utf-8").splitlines():
if mountPoint in line:
totalSpace=int(line.split()[1])*1024
freeSpace=int(line.split()[3])*1024
spaceToUse=int(freeSpace - (totalSpace -(totalSpace * fillingPercent/100)))
if refreshingPercent != 0:
# collect files in portableCollection
print "Scanning your portable collection... This may take a while"
pc = MusicCollection(portableCollection, followSimlinks)
filesToDelete=int(len(pc.Songs) * refreshingPercent/100)
# deleting some files to refresh music on portable device
for i in list(range(filesToDelete)):
song = random.choice(pc.Songs)
pc.del_song(song)
space = spaceToUse/1024./1024.
print "Avaliable Space:[%3.1f Mb] Deleting: %s" % (space, song.file_name)
deleteFile(song.full_path)
spaceToUse += song.size
# to clean empty dirs in collection
print "Deleting empty directories"
delEmptyDir(portableCollection)
if spaceToUse < 0:
return
# collect files in fullCollection
print "Scanning your music collection... This may take a while"
fc = MusicCollection(fullCollection, followSimlinks)
# coping random files to disk
while fc.Songs:
song = random.choice(fc.Songs)
fc.Songs.remove(song)
spaceToUse -= song.size
if spaceToUse < 0:
spaceToUse += song.size
break
try:
os.makedirs(os.path.join(portableCollection, song.folder))
except OSError:
pass
#print "Copying:", os.path.join(song.folder, song.file_name)
space = spaceToUse/1024./1024.
print "Avaliable Space:[%3.1f Mb] Copying: %s" % (space, song.file_name)
copyFile(song.full_path, os.path.join(portableCollection, song.folder))
if __name__ == "__main__":
try:
import random
import sys
import optparse
usage = '''run this script with two options:
/directory/with/your/music /directory/with/music/on/your/portable/device
or use -h to get more help'''
parser = optparse.OptionParser(usage=usage)
parser.add_option("-f", "--filling-percent",
help="percent of disk filling", action="store",
default='80')
parser.add_option("-r", "--refreshing-percent",
help="percent of refreshing music", action="store",
default='30')
parser.add_option("-s", "--follow-simlinks",
help="follow simlinks while scaning",
action="store_true", default=False)
(opts, args) = parser.parse_args(sys.argv[1:])
if len(args) != 2:
raise ValueError('Not all directories was specified')
notIntegerMsg = '%s must be integer'
bigMsg = '%s can\'t be more than 100'
if opts.filling_percent:
if not opts.filling_percent.isdigit():
raise Exception(notIntegerMsg % 'Filling percent')
elif int(opts.filling_percent) > 100:
raise Exception(bigMsg % 'Filling percent')
fillingPercent = int(opts.filling_percent)
if opts.refreshing_percent:
if not opts.refreshing_percent.isdigit():
raise Exception(notIntegerMsg % 'Refreshing percent')
elif int(opts.refreshing_percent) > 100:
raise Exception(bigMsg % 'Refreshing percent')
refreshingPercent = int(opts.refreshing_percent)
fullCollection = os.path.abspath(args[0])
portableCollection = os.path.abspath(args[1])
followSimlinks = opts.follow_simlinks
main(fullCollection, portableCollection, fillingPercent,
refreshingPercent, followSimlinks)
print 'Done!'
except KeyboardInterrupt:
print '\nCtl+C detected... Terminated.'
exit()
except (ValueError, Exception) as er:
parser.error(er)
exit()
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Версия для python 3.x update_music.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Created with hope to be useful.
import subprocess
import shutil
import os
if os.sys.platform != "linux2":
print("This code for linux platform only!")
exit()
class Song:
import os
def __init__(self, path, collection=None):
self.file_name = os.path.basename(path)
self.collection = collection
self.size = 0
self.full_path = path
self.folder = None
self.type = None
self.size = os.path.getsize(self.full_path)
if self.collection:
path = self.full_path.split(self.collection)[1].lstrip(os.path.sep)
self.folder = os.path.dirname(path)
else:
self.folder = os.path.dirname(self.full_path)
self.type = os.path.splitext(self.file_name)[-1].lstrip('.')
class MusicCollection:
import os
def __init__(self, path, followlinks=False):
self.path = path
self.Songs = []
self.CollectionSize=0
self.allowed_types = ['mp3', 'wma', 'ogg']
self.follow = followlinks
self.scan()
def scan(self):
# we need reinit collection info if we run this outside __init__
self.CollectionSize = 0
self.Songs = []
for root, dirs, files in os.walk(self.path, followlinks=self.follow):
for file in files:
songPath = os.path.join(root, file)
s = Song(songPath, self.path)
if s.type in self.allowed_types:
self.Songs.append(s)
self.CollectionSize += s.size
def add_song(self, song):
self.Songs.append(song)
self.CollectionSize += song.size
def del_song(self, song):
self.Songs.remove(song)
self.CollectionSize -= song.size
def getMount(path):
path = os.path.abspath(path)
while path != os.path.sep:
if os.path.ismount(path):
return path
path = os.path.abspath(os.path.join(path, os.pardir))
return path
def delEmptyDir(path):
for root, dirs, files in os.walk(path):
if not files and not dirs:
# we actually don't need to remove portable music directory
if root != path:
#print('Deleting empty:', root)
os.removedirs(root)
elif not files:
for dir in dirs:
delEmptyDir(os.path.join(root, dir))
def deleteFile(path):
d = os.remove(path)
def copyFile(path, dest):
c = shutil.copy2(path, dest)
def main(*args):
mountPoint = getMount(portableCollection)
if mountPoint == getMount(fullCollection) or mountPoint == '/':
print('Your portable device not mounted! '
'So please mount it and try again.')
exit()
# checking folders to exist
for folder in [fullCollection, portableCollection]:
if not os.path.isdir(folder):
print("Can't find folder %s" % folder)
exit()
# disk free check
df = subprocess.Popen(['df'], stdout=subprocess.PIPE).communicate()[0].strip()
for line in df.decode("utf-8").splitlines():
if mountPoint in line:
totalSpace=int(line.split()[1])*1024
freeSpace=int(line.split()[3])*1024
spaceToUse=int(freeSpace - (totalSpace -(totalSpace * fillingPercent/100)))
if refreshingPercent != 0:
# collect files in portableCollection
print("Scanning your portable collection... This may take a while")
pc = MusicCollection(portableCollection, followSimlinks)
filesToDelete=int(len(pc.Songs) * refreshingPercent/100)
# deleting some files to refresh music on portable device
for i in list(range(filesToDelete)):
song = random.choice(pc.Songs)
pc.del_song(song)
space = spaceToUse/1024./1024.
print("Avaliable Space:[%3.1f Mb] Deleting: %s" % (space, song.file_name))
deleteFile(song.full_path)
spaceToUse += song.size
# to clean empty dirs in collection
print("Deleting empty directories")
delEmptyDir(portableCollection)
if spaceToUse < 0:
return
# collect files in fullCollection
print("Scanning your music collection... This may take a while")
fc = MusicCollection(fullCollection, followSimlinks)
# coping random files to disk
while fc.Songs:
song = random.choice(fc.Songs)
fc.Songs.remove(song)
spaceToUse -= song.size
if spaceToUse < 0:
spaceToUse += song.size
break
try:
os.makedirs(os.path.join(portableCollection, song.folder))
except OSError:
pass
#print("Copying:", os.path.join(song.folder, song.file_name))
space = spaceToUse/1024./1024.
print("Avaliable Space:[%3.1f Mb] Copying: %s" % (space, song.file_name))
copyFile(song.full_path, os.path.join(portableCollection, song.folder))
if __name__ == "__main__":
try:
import random
import sys
import optparse
usage = '''run this script with two options:
/directory/with/your/music /directory/with/music/on/your/portable/device
or use -h to get more help'''
parser = optparse.OptionParser(usage=usage)
parser.add_option("-f", "--filling-percent",
help="percent of disk filling", action="store",
default='80')
parser.add_option("-r", "--refreshing-percent",
help="percent of refreshing music", action="store",
default='30')
parser.add_option("-s", "--follow-simlinks",
help="follow simlinks while scaning",
action="store_true", default=False)
(opts, args) = parser.parse_args(sys.argv[1:])
if len(args) != 2:
raise ValueError('Not all directories was specified')
notIntegerMsg = '%s must be integer'
bigMsg = '%s can\'t be more than 100'
if opts.filling_percent:
if not opts.filling_percent.isdigit():
raise Exception(notIntegerMsg % 'Filling percent')
elif int(opts.filling_percent) > 100:
raise Exception(bigMsg % 'Filling percent')
fillingPercent = int(opts.filling_percent)
if opts.refreshing_percent:
if not opts.refreshing_percent.isdigit():
raise Exception(notIntegerMsg % 'Refreshing percent')
elif int(opts.refreshing_percent) > 100:
raise Exception(bigMsg % 'Refreshing percent')
refreshingPercent = int(opts.refreshing_percent)
fullCollection = os.path.abspath(args[0])
portableCollection = os.path.abspath(args[1])
followSimlinks = opts.follow_simlinks
main(fullCollection, portableCollection, fillingPercent,
refreshingPercent, followSimlinks)
print('Done!')
except KeyboardInterrupt:
print('\nCtl+C detected... Terminated.')
exit()
except (ValueError, Exception) as er:
parser.error(er)
exit()
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P.S. Надеюсь кому-нибудь будет полезен так же как и мне. :)
P.P.S. Скрипт немного обновлен, добавлены некоторые проверки, переписаны функции копирования и удаления (спасибо
K-9)
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caxap 05.06.2011 18:27 #
