Mercurial > cpython-lru_cache-weakref

annotate Tools/scripts/sum5.py @ 25838:8540887bcec6 2.2

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Backport of 2.183: Fix memory leak in add_subclass() found by NealN with valgrind.
author Guido van Rossum <guido@python.org>
date Fri, 18 Oct 2002 13:42:21 +0000
parents 14a27acc755a
children 0ffb54b1c3ea
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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73758db2f464 /usr/local/bin/python -> /usr/bin/env python
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1 #! /usr/bin/env python
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2
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3 # print md5 checksum for files
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4
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5 bufsize = 8096
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6 fnfilter = None
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7 rmode = 'r'
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8
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9 usage = """
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10 usage: sum5 [-b] [-t] [-l] [-s bufsize] [file ...]
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11 -b : read files in binary mode
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12 -t : read files in text mode (default)
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13 -l : print last pathname component only
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14 -s bufsize: read buffer size (default %d)
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15 file ... : files to sum; '-' or no files means stdin
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16 """ % bufsize
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17
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18 import sys
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19 import string
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20 import os
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21 import md5
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22 import regsub
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23
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24 StringType = type('')
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25 FileType = type(sys.stdin)
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26
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27 def sum(*files):
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28 sts = 0
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29 if files and type(files[-1]) == FileType:
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30 out, files = files[-1], files[:-1]
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31 else:
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32 out = sys.stdout
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33 if len(files) == 1 and type(files[0]) != StringType:
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34 files = files[0]
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35 for f in files:
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36 if type(f) == StringType:
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37 if f == '-':
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38 sts = printsumfp(sys.stdin, '<stdin>', out) or sts
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39 else:
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40 sts = printsum(f, out) or sts
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41 else:
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42 sts = sum(f, out) or sts
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43 return sts
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44
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45 def printsum(file, out = sys.stdout):
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46 try:
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47 fp = open(file, rmode)
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48 except IOError, msg:
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49 sys.stderr.write('%s: Can\'t open: %s\n' % (file, msg))
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50 return 1
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51 if fnfilter:
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52 file = fnfilter(file)
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53 sts = printsumfp(fp, file, out)
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54 fp.close()
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55 return sts
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56
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57 def printsumfp(fp, file, out = sys.stdout):
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58 m = md5.md5()
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59 try:
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60 while 1:
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61 data = fp.read(bufsize)
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62 if not data: break
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63 m.update(data)
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64 except IOError, msg:
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65 sys.stderr.write('%s: I/O error: %s\n' % (file, msg))
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66 return 1
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67 out.write('%s %s\n' % (hexify(m.digest()), file))
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68 return 0
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69
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70 def hexify(s):
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71 res = ''
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72 for c in s:
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73 res = res + '%02x' % ord(c)
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74 return res
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75
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76 def main(args = sys.argv[1:], out = sys.stdout):
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77 global fnfilter, rmode, bufsize
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78 import getopt
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79 try:
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80 opts, args = getopt.getopt(args, 'blts:')
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81 except getopt.error, msg:
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82 sys.stderr.write('%s: %s\n%s' % (sys.argv[0], msg, usage))
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83 return 2
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84 for o, a in opts:
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85 if o == '-l':
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86 fnfilter = os.path.basename
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87 if o == '-b':
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88 rmode = 'rb'
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89 if o == '-t':
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90 rmode = 'r'
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91 if o == '-s':
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92 bufsize = string.atoi(a)
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93 if not args: args = ['-']
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94 return sum(args, out)
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95
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96 if __name__ == '__main__' or __name__ == sys.argv[0]:
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97 sys.exit(main(sys.argv[1:], sys.stdout))