| 1 | # This file implements a class which forms an interface to the .cdplayerrc
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| 2 | # file that is maintained by SGI's cdplayer program.
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| 3 | #
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| 4 | # Usage is as follows:
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| 5 | #
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| 6 | # import readcd
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| 7 | # r = readcd.Readcd()
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| 8 | # c = Cdplayer(r.gettrackinfo())
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| 9 | #
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| 10 | # Now you can use c.artist, c.title and c.track[trackno] (where trackno
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| 11 | # starts at 1). When the CD is not recognized, all values will be the empty
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| 12 | # string.
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| 13 | # It is also possible to set the above mentioned variables to new values.
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| 14 | # You can then use c.write() to write out the changed values to the
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| 15 | # .cdplayerrc file.
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| 16 |
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| 17 | cdplayerrc = '.cdplayerrc'
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| 18 |
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| 19 | class Cdplayer:
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| 20 | def __init__(self, tracklist):
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| 21 | import string
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| 22 | self.artist = ''
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| 23 | self.title = ''
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| 24 | if type(tracklist) == type(''):
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| 25 | t = []
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| 26 | for i in range(2, len(tracklist), 4):
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| 27 | t.append((None, \
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| 28 | (string.atoi(tracklist[i:i+2]), \
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| 29 | string.atoi(tracklist[i+2:i+4]))))
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| 30 | tracklist = t
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| 31 | self.track = [None] + [''] * len(tracklist)
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| 32 | self.id = 'd' + string.zfill(len(tracklist), 2)
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| 33 | for track in tracklist:
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| 34 | start, length = track
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| 35 | self.id = self.id + string.zfill(length[0], 2) + \
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| 36 | string.zfill(length[1], 2)
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| 37 | try:
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| 38 | import posix
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| 39 | f = open(posix.environ['HOME'] + '/' + cdplayerrc, 'r')
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| 40 | except IOError:
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| 41 | return
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| 42 | import re
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| 43 | reg = re.compile(r'^([^:]*):\t(.*)')
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| 44 | s = self.id + '.'
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| 45 | l = len(s)
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| 46 | while 1:
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| 47 | line = f.readline()
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| 48 | if line == '':
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| 49 | break
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| 50 | if line[:l] == s:
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| 51 | line = line[l:]
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| 52 | match = reg.match(line)
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| 53 | if not match:
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| 54 | print 'syntax error in ~/' + cdplayerrc
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| 55 | continue
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| 56 | name, value = match.group(1, 2)
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| 57 | if name == 'title':
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| 58 | self.title = value
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| 59 | elif name == 'artist':
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| 60 | self.artist = value
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| 61 | elif name[:5] == 'track':
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| 62 | trackno = string.atoi(name[6:])
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| 63 | self.track[trackno] = value
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| 64 | f.close()
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| 65 |
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| 66 | def write(self):
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| 67 | import posix
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| 68 | filename = posix.environ['HOME'] + '/' + cdplayerrc
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| 69 | try:
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| 70 | old = open(filename, 'r')
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| 71 | except IOError:
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| 72 | old = open('/dev/null', 'r')
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| 73 | new = open(filename + '.new', 'w')
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| 74 | s = self.id + '.'
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| 75 | l = len(s)
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| 76 | while 1:
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| 77 | line = old.readline()
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| 78 | if line == '':
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| 79 | break
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| 80 | if line[:l] != s:
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| 81 | new.write(line)
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| 82 | new.write(self.id + '.title:\t' + self.title + '\n')
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| 83 | new.write(self.id + '.artist:\t' + self.artist + '\n')
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| 84 | for i in range(1, len(self.track)):
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| 85 | new.write('%s.track.%r:\t%s\n' % (self.id, i, self.track[i]))
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| 86 | old.close()
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| 87 | new.close()
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| 88 | posix.rename(filename + '.new', filename)
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