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import pygame.cdrom as face

def main():
    face
.init()
    count
= face.get_count()
   
if count == 0:
        raw_input
('There is no cdrom drive.')
   
elif count == 1:
        cmd
(face.CD(0))
   
else:
        num
= which_CD(count)
       
if num != -1:
            cmd
(face.CD(num))
    face
.quit()

def which_CD(maximum):
   
print 'You have %s cdrom drives.' % maximum
   
while True:
       
try:
            num
= int(raw_input('What cdrom drive do you want to use? '))
       
except ValueError:
           
print 'Please try typing a number.'
       
except:
           
return -1
       
else:
           
if 0 < num <= maximum:
               
return num - 1
           
print 'The number is out of range.'

def cmd(disc):
    disc
.init()
    total
= disc.get_numtracks()
    table
= map(disc.get_track_audio, range(total))
   
if sum(table) == 0:
       
print 'This is not an audio CD.'
   
else:
        index
= {}
        count
= 0
       
for i, b in enumerate(table):
           
if b:
                count
+= 1
                index
[count] = i
        cmd_line
(disc, index)
    disc
.stop()
    disc
.quit()

def cmd_line(disc, index):
   
while True:
        prompt
= get_prompt()
       
if prompt == 'nop':
           
pass
       
elif prompt == 'help':
           
print 'help:  get this message'
           
print 'nop:   does nothing'
           
print 'total: shows total tracks'
           
print 'play:  plays the selected track'
           
print 'quit:  leaves the commmand line'
       
elif prompt == 'total':
           
print 'There are %s tracks.' % len(index)
       
elif prompt == 'play':
            track
= get_track(len(index))
           
if track != -1:
                disc
.play(index[track])
           
else:
               
print 'Okay ...'
       
elif prompt == 'quit':
           
return
       
else:
           
print '"%s" cannot be understood.' % prompt

def get_prompt():
       
try:
           
return raw_input('>>> ').lower()
       
except:
           
return 'nop'

def get_track(maximum):
   
while True:
       
try:
            num
= int(raw_input('What track should be played? '))
       
except ValueError:
           
print 'Please try typing a number.'
       
except:
           
return -1
       
else:
           
if 0 < num <= maximum:
               
return num
           
print 'The number is out of range.'

if __name__ == '__main__':
    main
()

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