Mercurial > hg
annotate hgext/remotefilelog/shallowutil.py @ 48482:d2fff292c265
pytype: stop excluding statprof.py
This seems to have worked fine before (at least on Linux). We could just add
suppression comments, but this file already imports from the mercurial package,
which seems to prevent this from running as a standalone program because of the
relative import of `pycompat`. PyCharm isn't happy either way.
File "/mnt/c/Users/Matt/hg/mercurial/statprof.py", line 501, in display:
Function TextIO.write was called with the wrong arguments [wrong-arg-types]
Expected: (self, s: str)
Actually passed: (self, s: bytes)
Called from (traceback):
line 1091, in main
File "/mnt/c/Users/Matt/hg/mercurial/statprof.py", line 501, in display:
Function TextIO.write was called with the wrong arguments [wrong-arg-types]
Expected: (self, s: str)
Actually passed: (self, s: bytes)
Called from (traceback):
line 431, in profile
File "/mnt/c/Users/Matt/hg/mercurial/statprof.py", line 522, in display:
Function TextIO.write was called with the wrong arguments [wrong-arg-types]
Expected: (self, s: str)
Actually passed: (self, s: bytes)
Called from (traceback):
line 1091, in main
File "/mnt/c/Users/Matt/hg/mercurial/statprof.py", line 522, in display:
Function TextIO.write was called with the wrong arguments [wrong-arg-types]
Expected: (self, s: str)
Actually passed: (self, s: bytes)
Called from (traceback):
line 431, in profile
File "/mnt/c/Users/Matt/hg/mercurial/statprof.py", line 523, in display:
Function TextIO.write was called with the wrong arguments [wrong-arg-types]
Expected: (self, s: str)
Actually passed: (self, s: bytes)
Called from (traceback):
line 1091, in main
File "/mnt/c/Users/Matt/hg/mercurial/statprof.py", line 523, in display:
Function TextIO.write was called with the wrong arguments [wrong-arg-types]
Expected: (self, s: str)
Actually passed: (self, s: bytes)
Called from (traceback):
line 431, in profile
File "/mnt/c/Users/Matt/hg/mercurial/statprof.py", line 524, in display:
Function TextIO.write was called with the wrong arguments [wrong-arg-types]
Expected: (self, s: str)
Actually passed: (self, s: bytes)
Called from (traceback):
line 1091, in main
File "/mnt/c/Users/Matt/hg/mercurial/statprof.py", line 524, in display:
Function TextIO.write was called with the wrong arguments [wrong-arg-types]
Expected: (self, s: str)
Actually passed: (self, s: bytes)
Called from (traceback):
line 431, in profile
File "/mnt/c/Users/Matt/hg/mercurial/statprof.py", line 796, in _write:
Function TextIO.write was called with the wrong arguments [wrong-arg-types]
Expected: (self, s: str)
Actually passed: (self, s: bytes)
Differential Revision: https://phab.mercurial-scm.org/D11921
author | Matt Harbison <matt_harbison@yahoo.com> |
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date | Mon, 13 Dec 2021 19:34:06 -0500 |
parents | b7a706e7843a |
children | 6000f5b25c9b |
rev | line source |
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1 # shallowutil.py -- remotefilelog utilities |
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2 # |
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3 # Copyright 2014 Facebook, Inc. |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2 or any later version. |
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7 from __future__ import absolute_import |
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8 |
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9 import collections |
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10 import errno |
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11 import os |
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12 import stat |
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13 import struct |
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14 import tempfile |
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15 |
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16 from mercurial.i18n import _ |
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17 from mercurial.pycompat import open |
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18 from mercurial.node import hex |
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19 from mercurial import ( |
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20 error, |
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21 pycompat, |
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22 revlog, |
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23 util, |
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24 ) |
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25 from mercurial.utils import ( |
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26 hashutil, |
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27 storageutil, |
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28 stringutil, |
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29 ) |
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30 from . import constants |
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31 |
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32 if not pycompat.iswindows: |
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33 import grp |
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34 |
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35 |
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36 def isenabled(repo): |
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37 """returns whether the repository is remotefilelog enabled or not""" |
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38 return constants.SHALLOWREPO_REQUIREMENT in repo.requirements |
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39 |
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40 |
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41 def getcachekey(reponame, file, id): |
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42 pathhash = hex(hashutil.sha1(file).digest()) |
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43 return os.path.join(reponame, pathhash[:2], pathhash[2:], id) |
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44 |
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45 |
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46 def getlocalkey(file, id): |
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47 pathhash = hex(hashutil.sha1(file).digest()) |
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48 return os.path.join(pathhash, id) |
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49 |
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50 |
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51 def getcachepath(ui, allowempty=False): |
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52 cachepath = ui.config(b"remotefilelog", b"cachepath") |
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53 if not cachepath: |
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54 if allowempty: |
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55 return None |
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56 else: |
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57 raise error.Abort( |
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58 _(b"could not find config option remotefilelog.cachepath") |
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59 ) |
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60 return util.expandpath(cachepath) |
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61 |
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62 |
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63 def getcachepackpath(repo, category): |
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64 cachepath = getcachepath(repo.ui) |
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65 if category != constants.FILEPACK_CATEGORY: |
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66 return os.path.join(cachepath, repo.name, b'packs', category) |
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67 else: |
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68 return os.path.join(cachepath, repo.name, b'packs') |
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69 |
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70 |
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71 def getlocalpackpath(base, category): |
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72 return os.path.join(base, b'packs', category) |
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73 |
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74 |
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75 def createrevlogtext(text, copyfrom=None, copyrev=None): |
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76 """returns a string that matches the revlog contents in a |
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77 traditional revlog |
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78 """ |
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79 meta = {} |
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80 if copyfrom or text.startswith(b'\1\n'): |
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81 if copyfrom: |
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82 meta[b'copy'] = copyfrom |
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83 meta[b'copyrev'] = copyrev |
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84 text = storageutil.packmeta(meta, text) |
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85 |
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86 return text |
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87 |
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88 |
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89 def parsemeta(text): |
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90 """parse mercurial filelog metadata""" |
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91 meta, size = storageutil.parsemeta(text) |
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92 if text.startswith(b'\1\n'): |
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93 s = text.index(b'\1\n', 2) |
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94 text = text[s + 2 :] |
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95 return meta or {}, text |
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96 |
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97 |
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98 def sumdicts(*dicts): |
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99 """Adds all the values of *dicts together into one dictionary. This assumes |
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100 the values in *dicts are all summable. |
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101 |
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102 e.g. [{'a': 4', 'b': 2}, {'b': 3, 'c': 1}] -> {'a': 4, 'b': 5, 'c': 1} |
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103 """ |
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104 result = collections.defaultdict(lambda: 0) |
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105 for dict in dicts: |
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106 for k, v in pycompat.iteritems(dict): |
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107 result[k] += v |
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108 return result |
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109 |
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110 |
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111 def prefixkeys(dict, prefix): |
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112 """Returns ``dict`` with ``prefix`` prepended to all its keys.""" |
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113 result = {} |
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114 for k, v in pycompat.iteritems(dict): |
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115 result[prefix + k] = v |
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116 return result |
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117 |
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118 |
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119 def reportpackmetrics(ui, prefix, *stores): |
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120 dicts = [s.getmetrics() for s in stores] |
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121 dict = prefixkeys(sumdicts(*dicts), prefix + b'_') |
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122 ui.log(prefix + b"_packsizes", b"\n", **pycompat.strkwargs(dict)) |
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123 |
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124 |
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125 def _parsepackmeta(metabuf): |
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126 """parse datapack meta, bytes (<metadata-list>) -> dict |
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127 |
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128 The dict contains raw content - both keys and values are strings. |
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129 Upper-level business may want to convert some of them to other types like |
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130 integers, on their own. |
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131 |
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132 raise ValueError if the data is corrupted |
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133 """ |
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134 metadict = {} |
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135 offset = 0 |
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136 buflen = len(metabuf) |
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137 while buflen - offset >= 3: |
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138 key = metabuf[offset : offset + 1] |
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139 offset += 1 |
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140 metalen = struct.unpack_from(b'!H', metabuf, offset)[0] |
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141 offset += 2 |
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142 if offset + metalen > buflen: |
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143 raise ValueError(b'corrupted metadata: incomplete buffer') |
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144 value = metabuf[offset : offset + metalen] |
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145 metadict[key] = value |
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146 offset += metalen |
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147 if offset != buflen: |
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148 raise ValueError(b'corrupted metadata: redundant data') |
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149 return metadict |
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150 |
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151 |
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152 def _buildpackmeta(metadict): |
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153 """reverse of _parsepackmeta, dict -> bytes (<metadata-list>) |
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154 |
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155 The dict contains raw content - both keys and values are strings. |
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156 Upper-level business may want to serialize some of other types (like |
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157 integers) to strings before calling this function. |
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158 |
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159 raise ProgrammingError when metadata key is illegal, or ValueError if |
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160 length limit is exceeded |
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161 """ |
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162 metabuf = b'' |
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163 for k, v in sorted(pycompat.iteritems((metadict or {}))): |
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164 if len(k) != 1: |
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165 raise error.ProgrammingError(b'packmeta: illegal key: %s' % k) |
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166 if len(v) > 0xFFFE: |
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167 raise ValueError( |
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168 b'metadata value is too long: 0x%x > 0xfffe' % len(v) |
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169 ) |
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170 metabuf += k |
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171 metabuf += struct.pack(b'!H', len(v)) |
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172 metabuf += v |
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173 # len(metabuf) is guaranteed representable in 4 bytes, because there are |
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174 # only 256 keys, and for each value, len(value) <= 0xfffe. |
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175 return metabuf |
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176 |
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177 |
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178 _metaitemtypes = { |
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179 constants.METAKEYFLAG: (int, pycompat.long), |
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180 constants.METAKEYSIZE: (int, pycompat.long), |
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181 } |
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182 |
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183 |
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184 def buildpackmeta(metadict): |
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185 """like _buildpackmeta, but typechecks metadict and normalize it. |
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186 |
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187 This means, METAKEYSIZE and METAKEYSIZE should have integers as values, |
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188 and METAKEYFLAG will be dropped if its value is 0. |
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189 """ |
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190 newmeta = {} |
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191 for k, v in pycompat.iteritems(metadict or {}): |
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192 expectedtype = _metaitemtypes.get(k, (bytes,)) |
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193 if not isinstance(v, expectedtype): |
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194 raise error.ProgrammingError(b'packmeta: wrong type of key %s' % k) |
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195 # normalize int to binary buffer |
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196 if int in expectedtype: |
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197 # optimization: remove flag if it's 0 to save space |
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198 if k == constants.METAKEYFLAG and v == 0: |
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199 continue |
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200 v = int2bin(v) |
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201 newmeta[k] = v |
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202 return _buildpackmeta(newmeta) |
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203 |
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204 |
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205 def parsepackmeta(metabuf): |
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206 """like _parsepackmeta, but convert fields to desired types automatically. |
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207 |
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208 This means, METAKEYFLAG and METAKEYSIZE fields will be converted to |
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209 integers. |
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210 """ |
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211 metadict = _parsepackmeta(metabuf) |
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212 for k, v in pycompat.iteritems(metadict): |
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213 if k in _metaitemtypes and int in _metaitemtypes[k]: |
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214 metadict[k] = bin2int(v) |
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215 return metadict |
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216 |
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217 |
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218 def int2bin(n): |
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219 """convert a non-negative integer to raw binary buffer""" |
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220 buf = bytearray() |
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221 while n > 0: |
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222 buf.insert(0, n & 0xFF) |
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223 n >>= 8 |
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224 return bytes(buf) |
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225 |
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226 |
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227 def bin2int(buf): |
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228 """the reverse of int2bin, convert a binary buffer to an integer""" |
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229 x = 0 |
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230 for b in bytearray(buf): |
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231 x <<= 8 |
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232 x |= b |
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233 return x |
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234 |
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235 |
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236 class BadRemotefilelogHeader(error.StorageError): |
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237 """Exception raised when parsing a remotefilelog blob header fails.""" |
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238 |
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239 |
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240 def parsesizeflags(raw): |
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241 """given a remotefilelog blob, return (headersize, rawtextsize, flags) |
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242 |
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243 see remotefilelogserver.createfileblob for the format. |
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244 raise RuntimeError if the content is illformed. |
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245 """ |
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246 flags = revlog.REVIDX_DEFAULT_FLAGS |
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247 size = None |
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248 try: |
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249 index = raw.index(b'\0') |
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250 except ValueError: |
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251 raise BadRemotefilelogHeader( |
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252 "unexpected remotefilelog header: illegal format" |
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253 ) |
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254 header = raw[:index] |
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255 if header.startswith(b'v'): |
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256 # v1 and above, header starts with 'v' |
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257 if header.startswith(b'v1\n'): |
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258 for s in header.split(b'\n'): |
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259 if s.startswith(constants.METAKEYSIZE): |
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260 size = int(s[len(constants.METAKEYSIZE) :]) |
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261 elif s.startswith(constants.METAKEYFLAG): |
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262 flags = int(s[len(constants.METAKEYFLAG) :]) |
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263 else: |
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264 raise BadRemotefilelogHeader( |
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265 b'unsupported remotefilelog header: %s' % header |
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266 ) |
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267 else: |
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268 # v0, str(int(size)) is the header |
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269 size = int(header) |
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270 if size is None: |
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271 raise BadRemotefilelogHeader( |
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272 "unexpected remotefilelog header: no size found" |
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273 ) |
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274 return index + 1, size, flags |
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275 |
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276 |
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277 def buildfileblobheader(size, flags, version=None): |
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278 """return the header of a remotefilelog blob. |
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279 |
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280 see remotefilelogserver.createfileblob for the format. |
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281 approximately the reverse of parsesizeflags. |
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282 |
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283 version could be 0 or 1, or None (auto decide). |
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284 """ |
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285 # choose v0 if flags is empty, otherwise v1 |
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286 if version is None: |
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287 version = int(bool(flags)) |
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288 if version == 1: |
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289 header = b'v1\n%s%d\n%s%d' % ( |
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290 constants.METAKEYSIZE, |
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291 size, |
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292 constants.METAKEYFLAG, |
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293 flags, |
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294 ) |
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295 elif version == 0: |
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296 if flags: |
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297 raise error.ProgrammingError(b'fileblob v0 does not support flag') |
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298 header = b'%d' % size |
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299 else: |
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300 raise error.ProgrammingError(b'unknown fileblob version %d' % version) |
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301 return header |
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302 |
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303 |
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304 def ancestormap(raw): |
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305 offset, size, flags = parsesizeflags(raw) |
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306 start = offset + size |
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307 |
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308 mapping = {} |
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309 while start < len(raw): |
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310 divider = raw.index(b'\0', start + 80) |
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311 |
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312 currentnode = raw[start : (start + 20)] |
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313 p1 = raw[(start + 20) : (start + 40)] |
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314 p2 = raw[(start + 40) : (start + 60)] |
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315 linknode = raw[(start + 60) : (start + 80)] |
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316 copyfrom = raw[(start + 80) : divider] |
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317 |
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318 mapping[currentnode] = (p1, p2, linknode, copyfrom) |
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319 start = divider + 1 |
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320 |
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321 return mapping |
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322 |
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323 |
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324 def readfile(path): |
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325 f = open(path, b'rb') |
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326 try: |
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327 result = f.read() |
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328 |
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329 # we should never have empty files |
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330 if not result: |
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331 os.remove(path) |
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332 raise IOError(b"empty file: %s" % path) |
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333 |
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334 return result |
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335 finally: |
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336 f.close() |
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337 |
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338 |
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339 def unlinkfile(filepath): |
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340 if pycompat.iswindows: |
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341 # On Windows, os.unlink cannnot delete readonly files |
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342 os.chmod(filepath, stat.S_IWUSR) |
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343 os.unlink(filepath) |
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344 |
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345 |
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346 def renamefile(source, destination): |
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347 if pycompat.iswindows: |
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348 # On Windows, os.rename cannot rename readonly files |
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349 # and cannot overwrite destination if it exists |
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350 os.chmod(source, stat.S_IWUSR) |
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351 if os.path.isfile(destination): |
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352 os.chmod(destination, stat.S_IWUSR) |
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353 os.unlink(destination) |
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354 |
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355 os.rename(source, destination) |
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356 |
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357 |
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358 def writefile(path, content, readonly=False): |
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359 dirname, filename = os.path.split(path) |
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360 if not os.path.exists(dirname): |
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361 try: |
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362 os.makedirs(dirname) |
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363 except OSError as ex: |
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364 if ex.errno != errno.EEXIST: |
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365 raise |
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366 |
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367 fd, temp = tempfile.mkstemp(prefix=b'.%s-' % filename, dir=dirname) |
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368 os.close(fd) |
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369 |
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370 try: |
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371 f = util.posixfile(temp, b'wb') |
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372 f.write(content) |
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373 f.close() |
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374 |
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375 if readonly: |
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376 mode = 0o444 |
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377 else: |
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378 # tempfiles are created with 0o600, so we need to manually set the |
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379 # mode. |
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380 oldumask = os.umask(0) |
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381 # there's no way to get the umask without modifying it, so set it |
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382 # back |
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383 os.umask(oldumask) |
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384 mode = ~oldumask |
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385 |
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386 renamefile(temp, path) |
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387 os.chmod(path, mode) |
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388 except Exception: |
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389 try: |
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390 unlinkfile(temp) |
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391 except OSError: |
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392 pass |
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393 raise |
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394 |
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395 |
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396 def sortnodes(nodes, parentfunc): |
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397 """Topologically sorts the nodes, using the parentfunc to find |
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398 the parents of nodes.""" |
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399 nodes = set(nodes) |
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400 childmap = {} |
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401 parentmap = {} |
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402 roots = [] |
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403 |
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404 # Build a child and parent map |
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405 for n in nodes: |
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406 parents = [p for p in parentfunc(n) if p in nodes] |
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407 parentmap[n] = set(parents) |
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408 for p in parents: |
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409 childmap.setdefault(p, set()).add(n) |
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410 if not parents: |
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411 roots.append(n) |
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412 |
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413 roots.sort() |
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414 # Process roots, adding children to the queue as they become roots |
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415 results = [] |
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416 while roots: |
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417 n = roots.pop(0) |
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418 results.append(n) |
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419 if n in childmap: |
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420 children = childmap[n] |
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421 for c in children: |
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422 childparents = parentmap[c] |
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423 childparents.remove(n) |
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424 if len(childparents) == 0: |
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425 # insert at the beginning, that way child nodes |
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426 # are likely to be output immediately after their |
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427 # parents. This gives better compression results. |
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428 roots.insert(0, c) |
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429 |
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430 return results |
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431 |
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432 |
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433 def readexactly(stream, n): |
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434 '''read n bytes from stream.read and abort if less was available''' |
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435 s = stream.read(n) |
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436 if len(s) < n: |
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437 raise error.Abort( |
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438 _(b"stream ended unexpectedly (got %d bytes, expected %d)") |
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439 % (len(s), n) |
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440 ) |
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441 return s |
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442 |
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443 |
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444 def readunpack(stream, fmt): |
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445 data = readexactly(stream, struct.calcsize(fmt)) |
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446 return struct.unpack(fmt, data) |
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447 |
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448 |
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449 def readpath(stream): |
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450 rawlen = readexactly(stream, constants.FILENAMESIZE) |
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451 pathlen = struct.unpack(constants.FILENAMESTRUCT, rawlen)[0] |
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452 return readexactly(stream, pathlen) |
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453 |
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454 |
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455 def readnodelist(stream): |
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456 rawlen = readexactly(stream, constants.NODECOUNTSIZE) |
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457 nodecount = struct.unpack(constants.NODECOUNTSTRUCT, rawlen)[0] |
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458 for i in pycompat.xrange(nodecount): |
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459 yield readexactly(stream, constants.NODESIZE) |
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460 |
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461 |
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462 def readpathlist(stream): |
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463 rawlen = readexactly(stream, constants.PATHCOUNTSIZE) |
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464 pathcount = struct.unpack(constants.PATHCOUNTSTRUCT, rawlen)[0] |
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465 for i in pycompat.xrange(pathcount): |
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466 yield readpath(stream) |
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467 |
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468 |
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469 def getgid(groupname): |
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470 try: |
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471 gid = grp.getgrnam(pycompat.fsdecode(groupname)).gr_gid |
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472 return gid |
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473 except KeyError: |
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474 return None |
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475 |
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476 |
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477 def setstickygroupdir(path, gid, warn=None): |
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478 if gid is None: |
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479 return |
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480 try: |
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481 os.chown(path, -1, gid) |
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482 os.chmod(path, 0o2775) |
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483 except (IOError, OSError) as ex: |
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484 if warn: |
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485 warn(_(b'unable to chown/chmod on %s: %s\n') % (path, ex)) |
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486 |
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487 |
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488 def mkstickygroupdir(ui, path): |
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489 """Creates the given directory (if it doesn't exist) and give it a |
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490 particular group with setgid enabled.""" |
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491 gid = None |
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492 groupname = ui.config(b"remotefilelog", b"cachegroup") |
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493 if groupname: |
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494 gid = getgid(groupname) |
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495 if gid is None: |
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496 ui.warn(_(b'unable to resolve group name: %s\n') % groupname) |
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497 |
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498 # we use a single stat syscall to test the existence and mode / group bit |
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499 st = None |
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500 try: |
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501 st = os.stat(path) |
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502 except OSError: |
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503 pass |
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504 |
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505 if st: |
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506 # exists |
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507 if (st.st_mode & 0o2775) != 0o2775 or st.st_gid != gid: |
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508 # permission needs to be fixed |
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509 setstickygroupdir(path, gid, ui.warn) |
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510 return |
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511 |
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512 oldumask = os.umask(0o002) |
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513 try: |
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514 missingdirs = [path] |
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515 path = os.path.dirname(path) |
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516 while path and not os.path.exists(path): |
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517 missingdirs.append(path) |
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518 path = os.path.dirname(path) |
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519 |
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520 for path in reversed(missingdirs): |
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521 try: |
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522 os.mkdir(path) |
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523 except OSError as ex: |
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524 if ex.errno != errno.EEXIST: |
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525 raise |
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526 |
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527 for path in missingdirs: |
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528 setstickygroupdir(path, gid, ui.warn) |
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529 finally: |
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530 os.umask(oldumask) |
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531 |
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532 |
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533 def getusername(ui): |
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534 try: |
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535 return stringutil.shortuser(ui.username()) |
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536 except Exception: |
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537 return b'unknown' |
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538 |
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539 |
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540 def getreponame(ui): |
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541 reponame = ui.config(b'paths', b'default') |
40495
3a333a582d7b
remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff
changeset
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542 if reponame: |
3a333a582d7b
remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
543 return os.path.basename(reponame) |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
544 return b"unknown" |