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
|
# This file implements a class which forms an interface to the .cdplayerrc
# file that is maintained by SGI's cdplayer program.
#
# Usage is as follows:
#
# import readcd
# r = readcd.Readcd()
# c = Cdplayer(r.gettrackinfo())
#
# Now you can use c.artist, c.title and c.track[trackno] (where trackno
# starts at 1). When the CD is not recognized, all values will be the empty
# string.
# It is also possible to set the above mentioned variables to new values.
# You can then use c.write() to write out the changed values to the
# .cdplayerrc file.
cdplayerrc = '.cdplayerrc'
class Cdplayer:
def __init__(self, tracklist):
import string
self.artist = ''
self.title = ''
if type(tracklist) == type(''):
t = []
for i in range(2, len(tracklist), 4):
t.append((None, \
(int(tracklist[i:i+2]), \
int(tracklist[i+2:i+4]))))
tracklist = t
self.track = [None] + [''] * len(tracklist)
self.id = 'd' + string.zfill(len(tracklist), 2)
for track in tracklist:
start, length = track
self.id = self.id + string.zfill(length[0], 2) + \
string.zfill(length[1], 2)
try:
import posix
f = open(posix.environ['HOME'] + '/' + cdplayerrc, 'r')
except IOError:
return
import re
reg = re.compile(r'^([^:]*):\t(.*)')
s = self.id + '.'
l = len(s)
while 1:
line = f.readline()
if line == '':
break
if line[:l] == s:
line = line[l:]
match = reg.match(line)
if not match:
print 'syntax error in ~/' + cdplayerrc
continue
name, value = match.group(1, 2)
if name == 'title':
self.title = value
elif name == 'artist':
self.artist = value
elif name[:5] == 'track':
trackno = int(name[6:])
self.track[trackno] = value
f.close()
def write(self):
import posix
filename = posix.environ['HOME'] + '/' + cdplayerrc
try:
old = open(filename, 'r')
except IOError:
old = open('/dev/null', 'r')
new = open(filename + '.new', 'w')
s = self.id + '.'
l = len(s)
while 1:
line = old.readline()
if line == '':
break
if line[:l] != s:
new.write(line)
new.write(self.id + '.title:\t' + self.title + '\n')
new.write(self.id + '.artist:\t' + self.artist + '\n')
for i in range(1, len(self.track)):
new.write(self.id + '.track.' + `i` + ':\t' + \
self.track[i] + '\n')
old.close()
new.close()
posix.rename(filename + '.new', filename)
|
