Mercurial > cpython-lru_cache-weakref

annotate Demo/scripts/lpwatch.py @ 58925:eecf1bef052d 2.6

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Merged revisions 78207 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r78207 | ezio.melotti | 2010-02-17 01:26:09 +0200 (Wed, 17 Feb 2010) | 1 line #7930: fix stripid ........
author Ezio Melotti <ezio.melotti@gmail.com>
date Tue, 16 Feb 2010 23:29:44 +0000
parents 41524f9e2a2f
children 6a5e0c913c7c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4573
73758db2f464 /usr/local/bin/python -> /usr/bin/env python
Guido van Rossum <guido@python.org>
parents: 1506
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1 #! /usr/bin/env python
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2
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3 # Watch line printer queue(s).
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4 # Intended for BSD 4.3 lpq.
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5
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6 import posix
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7 import sys
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8 import time
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9 import string
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10
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11 DEF_PRINTER = 'psc'
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12 DEF_DELAY = 10
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13
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14 def main():
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15 delay = DEF_DELAY # XXX Use getopt() later
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16 try:
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17 thisuser = posix.environ['LOGNAME']
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18 except:
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19 thisuser = posix.environ['USER']
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20 printers = sys.argv[1:]
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21 if printers:
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22 # Strip '-P' from printer names just in case
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23 # the user specified it...
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24 for i in range(len(printers)):
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25 if printers[i][:2] == '-P':
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26 printers[i] = printers[i][2:]
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27 else:
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28 if posix.environ.has_key('PRINTER'):
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29 printers = [posix.environ['PRINTER']]
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30 else:
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31 printers = [DEF_PRINTER]
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32 #
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33 clearhome = posix.popen('clear', 'r').read()
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34 #
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35 while 1:
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36 text = clearhome
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37 for name in printers:
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38 text = text + makestatus(name, thisuser) + '\n'
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39 print text
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40 time.sleep(delay)
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41
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42 def makestatus(name, thisuser):
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43 pipe = posix.popen('lpq -P' + name + ' 2>&1', 'r')
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44 lines = []
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45 users = {}
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46 aheadbytes = 0
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47 aheadjobs = 0
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48 userseen = 0
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49 totalbytes = 0
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50 totaljobs = 0
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51 while 1:
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52 line = pipe.readline()
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53 if not line: break
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54 fields = string.split(line)
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55 n = len(fields)
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56 if len(fields) >= 6 and fields[n-1] == 'bytes':
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57 rank = fields[0]
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58 user = fields[1]
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59 job = fields[2]
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60 files = fields[3:-2]
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61 bytes = eval(fields[n-2])
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62 if user == thisuser:
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63 userseen = 1
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64 elif not userseen:
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65 aheadbytes = aheadbytes + bytes
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66 aheadjobs = aheadjobs + 1
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67 totalbytes = totalbytes + bytes
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68 totaljobs = totaljobs + 1
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69 if users.has_key(user):
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70 ujobs, ubytes = users[user]
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71 else:
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72 ujobs, ubytes = 0, 0
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73 ujobs = ujobs + 1
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74 ubytes = ubytes + bytes
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75 users[user] = ujobs, ubytes
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76 else:
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77 if fields and fields[0] <> 'Rank':
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78 line = string.strip(line)
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79 if line == 'no entries':
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80 line = name + ': idle'
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81 elif line[-22:] == ' is ready and printing':
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82 line = name
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83 lines.append(line)
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84 #
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85 if totaljobs:
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86 line = '%d K' % ((totalbytes+1023)//1024)
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87 if totaljobs <> len(users):
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88 line = line + ' (%d jobs)' % totaljobs
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89 if len(users) == 1:
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90 line = line + ' for %s' % (users.keys()[0],)
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91 else:
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92 line = line + ' for %d users' % len(users)
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93 if userseen:
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94 if aheadjobs == 0:
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95 line = line + ' (%s first)' % thisuser
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96 else:
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97 line = line + ' (%d K before %s)' % (
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98 (aheadbytes+1023)//1024, thisuser)
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99 lines.append(line)
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100 #
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101 sts = pipe.close()
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102 if sts:
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103 lines.append('lpq exit status %r' % (sts,))
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104 return string.joinfields(lines, ': ')
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105
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106 if __name__ == "__main__":
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107 try:
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108 main()
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109 except KeyboardInterrupt:
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110 pass