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annotate Lib/stat.py @ 58765:2ba7677bfa95 legacy-trunk

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testCopysign was defined twice in test_math; combine the definitions
author Mark Dickinson <dickinsm@gmail.com>
date Sat, 06 Feb 2010 23:11:25 +0000
parents 06e641cb3a20
children abfe28e7e5cd
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 """Constants/functions for interpreting results of os.stat() and os.lstat().
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2
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3 Suggested usage: from stat import *
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4 """
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5
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6 # Indices for stat struct members in the tuple returned by os.stat()
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7
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8 ST_MODE = 0
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9 ST_INO = 1
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10 ST_DEV = 2
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11 ST_NLINK = 3
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12 ST_UID = 4
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13 ST_GID = 5
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14 ST_SIZE = 6
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15 ST_ATIME = 7
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16 ST_MTIME = 8
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17 ST_CTIME = 9
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18
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19 # Extract bits from the mode
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20
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21 def S_IMODE(mode):
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22 return mode & 07777
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23
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24 def S_IFMT(mode):
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25 return mode & 0170000
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26
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27 # Constants used as S_IFMT() for various file types
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28 # (not all are implemented on all systems)
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29
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30 S_IFDIR = 0040000
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31 S_IFCHR = 0020000
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32 S_IFBLK = 0060000
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33 S_IFREG = 0100000
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34 S_IFIFO = 0010000
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35 S_IFLNK = 0120000
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36 S_IFSOCK = 0140000
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37
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38 # Functions to test for each file type
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39
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40 def S_ISDIR(mode):
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41 return S_IFMT(mode) == S_IFDIR
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42
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43 def S_ISCHR(mode):
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44 return S_IFMT(mode) == S_IFCHR
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45
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46 def S_ISBLK(mode):
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47 return S_IFMT(mode) == S_IFBLK
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48
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49 def S_ISREG(mode):
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50 return S_IFMT(mode) == S_IFREG
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51
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52 def S_ISFIFO(mode):
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53 return S_IFMT(mode) == S_IFIFO
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54
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55 def S_ISLNK(mode):
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56 return S_IFMT(mode) == S_IFLNK
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57
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58 def S_ISSOCK(mode):
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59 return S_IFMT(mode) == S_IFSOCK
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60
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61 # Names for permission bits
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62
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63 S_ISUID = 04000
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64 S_ISGID = 02000
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65 S_ENFMT = S_ISGID
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66 S_ISVTX = 01000
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67 S_IREAD = 00400
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68 S_IWRITE = 00200
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69 S_IEXEC = 00100
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70 S_IRWXU = 00700
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71 S_IRUSR = 00400
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72 S_IWUSR = 00200
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73 S_IXUSR = 00100
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74 S_IRWXG = 00070
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75 S_IRGRP = 00040
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76 S_IWGRP = 00020
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77 S_IXGRP = 00010
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78 S_IRWXO = 00007
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79 S_IROTH = 00004
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80 S_IWOTH = 00002
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81 S_IXOTH = 00001
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83 # Names for file flags
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84
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85 UF_NODUMP = 0x00000001
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86 UF_IMMUTABLE = 0x00000002
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87 UF_APPEND = 0x00000004
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88 UF_OPAQUE = 0x00000008
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89 UF_NOUNLINK = 0x00000010
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90 SF_ARCHIVED = 0x00010000
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91 SF_IMMUTABLE = 0x00020000
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92 SF_APPEND = 0x00040000
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93 SF_NOUNLINK = 0x00100000
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94 SF_SNAPSHOT = 0x00200000