Mercurial > cpython-lru_cache-weakref

annotate Tools/scripts/byteyears.py @ 6719:faebc1940432 legacy-trunk

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Understand -Xlinker option.
author Guido van Rossum <guido@python.org>
date Tue, 02 Dec 1997 20:38:11 +0000
parents 73758db2f464
children 14a27acc755a
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1 #! /usr/bin/env python
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2
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3 # Print the product of age and size of each file, in suitable units.
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4 #
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5 # Usage: byteyears [ -a | -m | -c ] file ...
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6 #
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7 # Options -[amc] select atime, mtime (default) or ctime as age.
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8
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9 import sys, os, time
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10 import string
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11 from stat import *
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12
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13 # Use lstat() to stat files if it exists, else stat()
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14 try:
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15 statfunc = os.lstat
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16 except AttributeError:
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17 statfunc = os.stat
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18
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19 # Parse options
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20 if sys.argv[1] == '-m':
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21 itime = ST_MTIME
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22 del sys.argv[1]
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23 elif sys.argv[1] == '-c':
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24 itime = ST_CTIME
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25 del sys.argv[1]
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26 elif sys.argv[1] == '-a':
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27 itime = ST_CTIME
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28 del sys.argv[1]
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29 else:
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30 itime = ST_MTIME
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31
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32 secs_per_year = 365.0 * 24.0 * 3600.0 # Scale factor
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33 now = time.time() # Current time, for age computations
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34 status = 0 # Exit status, set to 1 on errors
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35
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36 # Compute max file name length
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37 maxlen = 1
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38 for file in sys.argv[1:]:
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39 if len(file) > maxlen: maxlen = len(file)
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40
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41 # Process each argument in turn
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42 for file in sys.argv[1:]:
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43 try:
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44 st = statfunc(file)
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45 except os.error, msg:
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46 sys.stderr.write('can\'t stat ' + `file` + ': ' + `msg` + '\n')
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47 status = 1
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48 st = ()
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49 if st:
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50 anytime = st[itime]
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51 size = st[ST_SIZE]
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52 age = now - anytime
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53 byteyears = float(size) * float(age) / secs_per_year
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54 print string.ljust(file, maxlen),
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55 print string.rjust(`int(byteyears)`, 8)
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57 sys.exit(status)