1 # This file implements a class which forms an interface to the .cdplayerrc

     2 # file that is maintained by SGI's cdplayer program.

     3 #

     4 # Usage is as follows:

     5 #

     6 # import readcd

     7 # r = readcd.Readcd()

     8 # c = Cdplayer(r.gettrackinfo())

     9 #

    10 # Now you can use c.artist, c.title and c.track[trackno] (where trackno

    11 # starts at 1).  When the CD is not recognized, all values will be the empty

    12 # string.

    13 # It is also possible to set the above mentioned variables to new values.

    14 # You can then use c.write() to write out the changed values to the

    15 # .cdplayerrc file.

    16 from warnings import warnpy3k

    17 warnpy3k("the cdplayer module has been removed in Python 3.0", stacklevel=2)

    18 del warnpy3k

    19 

    20 cdplayerrc = '.cdplayerrc'

    21 

    22 class Cdplayer:

    23     def __init__(self, tracklist):

    24         import string

    25         self.artist = ''

    26         self.title = ''

    27         if type(tracklist) == type(''):

    28             t = []

    29             for i in range(2, len(tracklist), 4):

    30                 t.append((None, \

    31                           (string.atoi(tracklist[i:i+2]), \

    32                            string.atoi(tracklist[i+2:i+4]))))

    33             tracklist = t

    34         self.track = [None] + [''] * len(tracklist)

    35         self.id = 'd' + string.zfill(len(tracklist), 2)

    36         for track in tracklist:

    37             start, length = track

    38             self.id = self.id + string.zfill(length[0], 2) + \

    39                       string.zfill(length[1], 2)

    40         try:

    41             import posix

    42             f = open(posix.environ['HOME'] + '/' + cdplayerrc, 'r')

    43         except IOError:

    44             return

    45         import re

    46         reg = re.compile(r'^([^:]*):\t(.*)')

    47         s = self.id + '.'

    48         l = len(s)

    49         while 1:

    50             line = f.readline()

    51             if line == '':

    52                 break

    53             if line[:l] == s:

    54                 line = line[l:]

    55                 match = reg.match(line)

    56                 if not match:

    57                     print 'syntax error in ~/' + cdplayerrc

    58                     continue

    59                 name, value = match.group(1, 2)

    60                 if name == 'title':

    61                     self.title = value

    62                 elif name == 'artist':

    63                     self.artist = value

    64                 elif name[:5] == 'track':

    65                     trackno = string.atoi(name[6:])

    66                     self.track[trackno] = value

    67         f.close()

    68 

    69     def write(self):

    70         import posix

    71         filename = posix.environ['HOME'] + '/' + cdplayerrc

    72         try:

    73             old = open(filename, 'r')

    74         except IOError:

    75             old = open('/dev/null', 'r')

    76         new = open(filename + '.new', 'w')

    77         s = self.id + '.'

    78         l = len(s)

    79         while 1:

    80             line = old.readline()

    81             if line == '':

    82                 break

    83             if line[:l] != s:

    84                 new.write(line)

    85         new.write(self.id + '.title:\t' + self.title + '\n')

    86         new.write(self.id + '.artist:\t' + self.artist + '\n')

    87         for i in range(1, len(self.track)):

    88             new.write('%s.track.%r:\t%s\n' % (self.id, i, self.track[i]))

    89         old.close()

    90         new.close()

    91         posix.rename(filename + '.new', filename)