Mercurial > cpython-lru_cache-weakref

annotate Lib/irix6/cdplayer.py @ 5817:48b94de85bf3 legacy-trunk

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Extensive changes by AMK.
author Guido van Rossum <guido@python.org>
date Thu, 17 Jul 1997 16:29:42 +0000
parents 6ce61f212c3e
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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4964
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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 regex
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43 reg = regex.compile('^\\([^:]*\\):\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 if reg.match(line) == -1:
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53 print 'syntax error in ~/' + cdplayerrc
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54 continue
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55 name = line[reg.regs[1][0]:reg.regs[1][1]]
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56 value = line[reg.regs[2][0]:reg.regs[2][1]]
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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(self.id + '.track.' + `i` + ':\t' + \
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86 self.track[i] + '\n')
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87 old.close()
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88 new.close()
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89 posix.rename(filename + '.new', filename)