Mercurial > public > mercurial-scm > hg-stable
annotate mercurial/posix.py @ 49907:58dff81ffba1
typing: add type hints to the common posix/windows platform functions
These are done in sync because some platforms have empty implementations, and it
isn't obvious what the types should be without examining the other. We want the
types aligned, so @overload definitions that differ aren't generated. The only
differences here are the few methods that unconditionally raise an error are
marked as `NoReturn`, which doesn't seem to bother pytype.
A couple of the posix module functions needed to be updated with a modern
ternary operator, because pytype seems to want to use the type of the second
object in the old `return x and y` style.
author | Matt Harbison <matt_harbison@yahoo.com> |
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date | Fri, 16 Dec 2022 00:54:39 -0500 |
parents | 0a91aba258e0 |
children | 464fe8b8f474 |
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1 # posix.py - Posix utility function implementations for Mercurial |
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2 # |
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3 # Copyright 2005-2009 Olivia Mackall <olivia@selenic.com> and others |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 |
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9 import errno |
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10 import fcntl |
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11 import getpass |
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12 import grp |
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13 import os |
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14 import pwd |
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15 import re |
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16 import select |
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17 import stat |
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18 import sys |
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19 import tempfile |
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20 import unicodedata |
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21 |
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22 from typing import ( |
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23 Iterable, |
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24 Iterator, |
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25 List, |
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26 NoReturn, |
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27 Optional, |
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28 Sequence, |
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29 Union, |
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30 ) |
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31 |
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32 from .i18n import _ |
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33 from .pycompat import ( |
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34 getattr, |
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35 open, |
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36 ) |
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37 from . import ( |
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38 encoding, |
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39 error, |
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40 policy, |
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41 pycompat, |
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42 ) |
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43 |
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44 osutil = policy.importmod('osutil') |
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45 |
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46 normpath = os.path.normpath |
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47 samestat = os.path.samestat |
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48 abspath = os.path.abspath # re-exports |
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49 |
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50 try: |
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51 oslink = os.link |
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52 except AttributeError: |
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53 # Some platforms build Python without os.link on systems that are |
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54 # vaguely unix-like but don't have hardlink support. For those |
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55 # poor souls, just say we tried and that it failed so we fall back |
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56 # to copies. |
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57 def oslink(src: bytes, dst: bytes) -> NoReturn: |
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58 raise OSError( |
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59 errno.EINVAL, b'hardlinks not supported: %s to %s' % (src, dst) |
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60 ) |
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61 |
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62 |
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63 readlink = os.readlink |
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64 unlink = os.unlink |
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65 rename = os.rename |
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66 removedirs = os.removedirs |
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67 expandglobs = False |
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68 |
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69 umask = os.umask(0) |
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70 os.umask(umask) |
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71 |
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72 posixfile = open |
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73 |
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74 |
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75 def split(p): |
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76 """Same as posixpath.split, but faster |
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77 |
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78 >>> import posixpath |
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79 >>> for f in [b'/absolute/path/to/file', |
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80 ... b'relative/path/to/file', |
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81 ... b'file_alone', |
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82 ... b'path/to/directory/', |
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83 ... b'/multiple/path//separators', |
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84 ... b'/file_at_root', |
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85 ... b'///multiple_leading_separators_at_root', |
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86 ... b'']: |
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87 ... assert split(f) == posixpath.split(f), f |
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88 """ |
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89 ht = p.rsplit(b'/', 1) |
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90 if len(ht) == 1: |
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91 return b'', p |
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92 nh = ht[0].rstrip(b'/') |
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93 if nh: |
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94 return nh, ht[1] |
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95 return ht[0] + b'/', ht[1] |
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96 |
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97 |
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98 def openhardlinks() -> bool: |
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99 '''return true if it is safe to hold open file handles to hardlinks''' |
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100 return True |
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101 |
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102 |
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103 def nlinks(name: bytes) -> int: |
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104 '''return number of hardlinks for the given file''' |
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105 return os.lstat(name).st_nlink |
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106 |
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107 |
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108 def parsepatchoutput(output_line: bytes) -> bytes: |
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109 """parses the output produced by patch and returns the filename""" |
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110 pf = output_line[14:] |
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111 if pycompat.sysplatform == b'OpenVMS': |
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112 if pf[0] == b'`': |
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113 pf = pf[1:-1] # Remove the quotes |
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114 else: |
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115 if pf.startswith(b"'") and pf.endswith(b"'") and b" " in pf: |
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116 pf = pf[1:-1] # Remove the quotes |
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117 return pf |
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118 |
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119 |
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120 def sshargs( |
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121 sshcmd: bytes, host: bytes, user: Optional[bytes], port: Optional[bytes] |
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122 ) -> bytes: |
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123 '''Build argument list for ssh''' |
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124 args = user and (b"%s@%s" % (user, host)) or host |
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125 if b'-' in args[:1]: |
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126 raise error.Abort( |
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127 _(b'illegal ssh hostname or username starting with -: %s') % args |
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128 ) |
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129 args = shellquote(args) |
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130 if port: |
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131 args = b'-p %s %s' % (shellquote(port), args) |
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132 return args |
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133 |
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134 |
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135 def isexec(f: bytes) -> bool: |
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136 """check whether a file is executable""" |
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137 return os.lstat(f).st_mode & 0o100 != 0 |
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138 |
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139 |
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140 def setflags(f: bytes, l: bool, x: bool) -> None: |
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141 st = os.lstat(f) |
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142 s = st.st_mode |
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143 if l: |
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144 if not stat.S_ISLNK(s): |
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145 # switch file to link |
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146 with open(f, b'rb') as fp: |
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147 data = fp.read() |
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148 unlink(f) |
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149 try: |
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150 os.symlink(data, f) |
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151 except OSError: |
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152 # failed to make a link, rewrite file |
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153 with open(f, b"wb") as fp: |
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154 fp.write(data) |
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155 |
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156 # no chmod needed at this point |
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157 return |
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158 if stat.S_ISLNK(s): |
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159 # switch link to file |
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160 data = os.readlink(f) |
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161 unlink(f) |
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162 with open(f, b"wb") as fp: |
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163 fp.write(data) |
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164 s = 0o666 & ~umask # avoid restatting for chmod |
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165 |
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166 sx = s & 0o100 |
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167 if st.st_nlink > 1 and bool(x) != bool(sx): |
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168 # the file is a hardlink, break it |
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169 with open(f, b"rb") as fp: |
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170 data = fp.read() |
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171 unlink(f) |
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172 with open(f, b"wb") as fp: |
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173 fp.write(data) |
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174 |
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175 if x and not sx: |
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176 # Turn on +x for every +r bit when making a file executable |
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177 # and obey umask. |
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178 os.chmod(f, s | (s & 0o444) >> 2 & ~umask) |
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179 elif not x and sx: |
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180 # Turn off all +x bits |
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181 os.chmod(f, s & 0o666) |
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182 |
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183 |
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184 def copymode( |
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185 src: bytes, |
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186 dst: bytes, |
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187 mode: Optional[bytes] = None, |
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188 enforcewritable: bool = False, |
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189 ) -> None: |
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190 """Copy the file mode from the file at path src to dst. |
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191 If src doesn't exist, we're using mode instead. If mode is None, we're |
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192 using umask.""" |
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193 try: |
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194 st_mode = os.lstat(src).st_mode & 0o777 |
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195 except FileNotFoundError: |
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196 st_mode = mode |
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197 if st_mode is None: |
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198 st_mode = ~umask |
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199 st_mode &= 0o666 |
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200 |
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201 new_mode = st_mode |
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202 |
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203 if enforcewritable: |
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204 new_mode |= stat.S_IWUSR |
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205 |
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206 os.chmod(dst, new_mode) |
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207 |
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208 |
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209 def checkexec(path: bytes) -> bool: |
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210 """ |
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211 Check whether the given path is on a filesystem with UNIX-like exec flags |
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212 |
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213 Requires a directory (like /foo/.hg) |
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214 """ |
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215 |
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216 # VFAT on some Linux versions can flip mode but it doesn't persist |
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217 # a FS remount. Frequently we can detect it if files are created |
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218 # with exec bit on. |
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219 |
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220 try: |
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221 EXECFLAGS = stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH |
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222 basedir = os.path.join(path, b'.hg') |
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223 cachedir = os.path.join(basedir, b'wcache') |
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224 storedir = os.path.join(basedir, b'store') |
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225 if not os.path.exists(cachedir): |
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226 try: |
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227 # we want to create the 'cache' directory, not the '.hg' one. |
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228 # Automatically creating '.hg' directory could silently spawn |
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229 # invalid Mercurial repositories. That seems like a bad idea. |
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230 os.mkdir(cachedir) |
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231 if os.path.exists(storedir): |
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232 copymode(storedir, cachedir) |
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233 else: |
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234 copymode(basedir, cachedir) |
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235 except (IOError, OSError): |
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236 # we other fallback logic triggers |
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237 pass |
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238 if os.path.isdir(cachedir): |
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239 checkisexec = os.path.join(cachedir, b'checkisexec') |
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240 checknoexec = os.path.join(cachedir, b'checknoexec') |
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241 |
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242 try: |
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243 m = os.stat(checkisexec).st_mode |
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244 except FileNotFoundError: |
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245 # checkisexec does not exist - fall through ... |
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246 pass |
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247 else: |
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248 # checkisexec exists, check if it actually is exec |
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249 if m & EXECFLAGS != 0: |
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250 # ensure checkisexec exists, check it isn't exec |
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251 try: |
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252 m = os.stat(checknoexec).st_mode |
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253 except FileNotFoundError: |
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254 open(checknoexec, b'w').close() # might fail |
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255 m = os.stat(checknoexec).st_mode |
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256 if m & EXECFLAGS == 0: |
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257 # check-exec is exec and check-no-exec is not exec |
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258 return True |
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259 # checknoexec exists but is exec - delete it |
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260 unlink(checknoexec) |
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261 # checkisexec exists but is not exec - delete it |
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262 unlink(checkisexec) |
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263 |
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264 # check using one file, leave it as checkisexec |
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265 checkdir = cachedir |
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266 else: |
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267 # check directly in path and don't leave checkisexec behind |
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268 checkdir = path |
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269 checkisexec = None |
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270 fh, fn = pycompat.mkstemp(dir=checkdir, prefix=b'hg-checkexec-') |
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271 try: |
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272 os.close(fh) |
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273 m = os.stat(fn).st_mode |
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274 if m & EXECFLAGS == 0: |
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275 os.chmod(fn, m & 0o777 | EXECFLAGS) |
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276 if os.stat(fn).st_mode & EXECFLAGS != 0: |
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277 if checkisexec is not None: |
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278 os.rename(fn, checkisexec) |
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279 fn = None |
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280 return True |
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281 finally: |
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282 if fn is not None: |
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283 unlink(fn) |
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284 except (IOError, OSError): |
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285 # we don't care, the user probably won't be able to commit anyway |
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286 return False |
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287 |
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288 |
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289 def checklink(path: bytes) -> bool: |
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290 """check whether the given path is on a symlink-capable filesystem""" |
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291 # mktemp is not racy because symlink creation will fail if the |
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292 # file already exists |
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293 while True: |
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294 cachedir = os.path.join(path, b'.hg', b'wcache') |
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295 checklink = os.path.join(cachedir, b'checklink') |
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296 # try fast path, read only |
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297 if os.path.islink(checklink): |
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298 return True |
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299 if os.path.isdir(cachedir): |
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300 checkdir = cachedir |
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301 else: |
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302 checkdir = path |
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303 cachedir = None |
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304 name = tempfile.mktemp( |
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305 dir=pycompat.fsdecode(checkdir), prefix=r'checklink-' |
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306 ) |
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307 name = pycompat.fsencode(name) |
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308 try: |
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309 fd = None |
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310 if cachedir is None: |
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311 fd = pycompat.namedtempfile( |
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312 dir=checkdir, prefix=b'hg-checklink-' |
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313 ) |
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314 target = os.path.basename(fd.name) |
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315 else: |
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316 # create a fixed file to link to; doesn't matter if it |
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317 # already exists. |
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318 target = b'checklink-target' |
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checklink: degrade gracefully on posix when fs is readonly (issue5511)
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319 try: |
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320 fullpath = os.path.join(cachedir, target) |
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321 open(fullpath, b'w').close() |
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322 except PermissionError: |
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323 # If we can't write to cachedir, just pretend |
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324 # that the fs is readonly and by association |
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325 # that the fs won't support symlinks. This |
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326 # seems like the least dangerous way to avoid |
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327 # data loss. |
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328 return False |
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329 try: |
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330 os.symlink(target, name) |
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331 if cachedir is None: |
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332 unlink(name) |
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333 else: |
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334 try: |
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335 os.rename(name, checklink) |
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336 except OSError: |
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337 unlink(name) |
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338 return True |
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339 except FileExistsError: |
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340 # link creation might race, try again |
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341 continue |
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342 finally: |
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343 if fd is not None: |
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344 fd.close() |
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345 except AttributeError: |
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346 return False |
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347 except OSError as inst: |
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348 # sshfs might report failure while successfully creating the link |
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349 if inst.errno == errno.EIO and os.path.exists(name): |
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350 unlink(name) |
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351 return False |
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352 |
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353 |
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354 def checkosfilename(path): |
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355 """Check that the base-relative path is a valid filename on this platform. |
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356 Returns None if the path is ok, or a UI string describing the problem.""" |
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357 return None # on posix platforms, every path is ok |
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358 |
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359 |
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360 def getfsmountpoint(dirpath): |
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361 """Get the filesystem mount point from a directory (best-effort) |
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362 |
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363 Returns None if we are unsure. Raises OSError on ENOENT, EPERM, etc. |
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364 """ |
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365 return getattr(osutil, 'getfsmountpoint', lambda x: None)(dirpath) |
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366 |
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367 |
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368 def getfstype(dirpath: bytes) -> Optional[bytes]: |
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369 """Get the filesystem type name from a directory (best-effort) |
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370 |
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371 Returns None if we are unsure. Raises OSError on ENOENT, EPERM, etc. |
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372 """ |
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373 return getattr(osutil, 'getfstype', lambda x: None)(dirpath) |
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374 |
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375 |
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376 def get_password() -> bytes: |
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377 return encoding.strtolocal(getpass.getpass('')) |
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378 |
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379 |
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380 def setbinary(fd) -> None: |
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381 pass |
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382 |
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383 |
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384 def pconvert(path: bytes) -> bytes: |
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385 return path |
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386 |
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387 |
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388 def localpath(path: bytes) -> bytes: |
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389 return path |
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390 |
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391 |
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392 def samefile(fpath1: bytes, fpath2: bytes) -> bool: |
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393 """Returns whether path1 and path2 refer to the same file. This is only |
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394 guaranteed to work for files, not directories.""" |
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395 return os.path.samefile(fpath1, fpath2) |
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396 |
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397 |
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398 def samedevice(fpath1: bytes, fpath2: bytes) -> bool: |
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399 """Returns whether fpath1 and fpath2 are on the same device. This is only |
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400 guaranteed to work for files, not directories.""" |
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401 st1 = os.lstat(fpath1) |
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402 st2 = os.lstat(fpath2) |
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403 return st1.st_dev == st2.st_dev |
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404 |
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405 |
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406 # os.path.normcase is a no-op, which doesn't help us on non-native filesystems |
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407 def normcase(path: bytes) -> bytes: |
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408 return path.lower() |
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409 |
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410 |
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411 # what normcase does to ASCII strings |
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412 normcasespec = encoding.normcasespecs.lower |
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413 # fallback normcase function for non-ASCII strings |
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414 normcasefallback = normcase |
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415 |
34647 | 416 if pycompat.isdarwin: |
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417 |
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418 def normcase(path: bytes) -> bytes: |
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419 """ |
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420 Normalize a filename for OS X-compatible comparison: |
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421 - escape-encode invalid characters |
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422 - decompose to NFD |
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423 - lowercase |
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424 - omit ignored characters [200c-200f, 202a-202e, 206a-206f,feff] |
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425 |
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426 >>> normcase(b'UPPER') |
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427 'upper' |
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428 >>> normcase(b'Caf\\xc3\\xa9') |
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429 'cafe\\xcc\\x81' |
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430 >>> normcase(b'\\xc3\\x89') |
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431 'e\\xcc\\x81' |
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432 >>> normcase(b'\\xb8\\xca\\xc3\\xca\\xbe\\xc8.JPG') # issue3918 |
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433 '%b8%ca%c3\\xca\\xbe%c8.jpg' |
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434 """ |
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435 |
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436 try: |
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437 return encoding.asciilower(path) # exception for non-ASCII |
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438 except UnicodeDecodeError: |
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439 return normcasefallback(path) |
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440 |
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441 normcasespec = encoding.normcasespecs.lower |
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442 |
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443 def normcasefallback(path: bytes) -> bytes: |
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444 try: |
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445 u = path.decode('utf-8') |
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446 except UnicodeDecodeError: |
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447 # OS X percent-encodes any bytes that aren't valid utf-8 |
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448 s = b'' |
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Matt Mackall <mpm@selenic.com>
parents:
26248
diff
changeset
|
449 pos = 0 |
27380
c7129ed280b8
mac: fix percent-encoding of non-utf-8 characters (issue4999)
Matt Mackall <mpm@selenic.com>
parents:
27362
diff
changeset
|
450 l = len(path) |
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|
451 while pos < l: |
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posix: use getutf8char to handle OS X filename percent-escaping
Matt Mackall <mpm@selenic.com>
parents:
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diff
changeset
|
452 try: |
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parents:
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|
453 c = encoding.getutf8char(path, pos) |
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parents:
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changeset
|
454 pos += len(c) |
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parents:
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|
455 except ValueError: |
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|
456 c = b'%%%02X' % ord(path[pos : pos + 1]) |
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parents:
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changeset
|
457 pos += 1 |
b8381832ce2b
posix: use getutf8char to handle OS X filename percent-escaping
Matt Mackall <mpm@selenic.com>
parents:
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diff
changeset
|
458 s += c |
19131
af3b651505e2
hfs+: rewrite percent-escaper (issue3918)
Matt Mackall <mpm@selenic.com>
parents:
18868
diff
changeset
|
459 |
15551
1fa41d1f1351
posix: add extended support for OS X path folding
Matt Mackall <mpm@selenic.com>
parents:
15499
diff
changeset
|
460 u = s.decode('utf-8') |
1fa41d1f1351
posix: add extended support for OS X path folding
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parents:
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changeset
|
461 |
1fa41d1f1351
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Matt Mackall <mpm@selenic.com>
parents:
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diff
changeset
|
462 # Decompose then lowercase (HFS+ technote specifies lower) |
43554
9f70512ae2cf
cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents:
43525
diff
changeset
|
463 enc = unicodedata.normalize('NFD', u).lower().encode('utf-8') |
23597
7a5bcd471f2e
darwin: omit ignorable codepoints when normcase()ing a file path
Augie Fackler <raf@durin42.com>
parents:
22946
diff
changeset
|
464 # drop HFS+ ignored characters |
7a5bcd471f2e
darwin: omit ignorable codepoints when normcase()ing a file path
Augie Fackler <raf@durin42.com>
parents:
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changeset
|
465 return encoding.hfsignoreclean(enc) |
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parents:
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changeset
|
466 |
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|
467 |
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parents:
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|
468 if pycompat.sysplatform == b'cygwin': |
15711
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cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
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diff
changeset
|
469 # workaround for cygwin, in which mount point part of path is |
c51c9dc13a58
cygwin: add cygwin specific normcase logic
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parents:
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|
470 # treated as case sensitive, even though underlying NTFS is case |
c51c9dc13a58
cygwin: add cygwin specific normcase logic
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parents:
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|
471 # insensitive. |
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parents:
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changeset
|
472 |
c51c9dc13a58
cygwin: add cygwin specific normcase logic
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parents:
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|
473 # default mount points |
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|
474 cygwinmountpoints = sorted( |
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parents:
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|
475 [ |
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parents:
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|
476 b"/usr/bin", |
89a2afe31e82
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|
477 b"/usr/lib", |
89a2afe31e82
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parents:
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|
478 b"/cygdrive", |
89a2afe31e82
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|
479 ], |
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|
480 reverse=True, |
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|
481 ) |
15711
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parents:
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changeset
|
482 |
c51c9dc13a58
cygwin: add cygwin specific normcase logic
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parents:
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diff
changeset
|
483 # use upper-ing as normcase as same as NTFS workaround |
49907
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Matt Harbison <matt_harbison@yahoo.com>
parents:
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diff
changeset
|
484 def normcase(path: bytes) -> bytes: |
15711
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parents:
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changeset
|
485 pathlen = len(path) |
30619
cfe66dcf45c0
py3: replace os.sep with pycompat.ossep (part 2 of 4)
Pulkit Goyal <7895pulkit@gmail.com>
parents:
30617
diff
changeset
|
486 if (pathlen == 0) or (path[0] != pycompat.ossep): |
15711
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cygwin: add cygwin specific normcase logic
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parents:
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diff
changeset
|
487 # treat as relative |
17203
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util, posix: eliminate encodinglower and encodingupper
Adrian Buehlmann <adrian@cadifra.com>
parents:
16726
diff
changeset
|
488 return encoding.upper(path) |
15711
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parents:
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diff
changeset
|
489 |
c51c9dc13a58
cygwin: add cygwin specific normcase logic
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parents:
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diff
changeset
|
490 # to preserve case of mountpoint part |
c51c9dc13a58
cygwin: add cygwin specific normcase logic
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parents:
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diff
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|
491 for mp in cygwinmountpoints: |
c51c9dc13a58
cygwin: add cygwin specific normcase logic
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parents:
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|
492 if not path.startswith(mp): |
c51c9dc13a58
cygwin: add cygwin specific normcase logic
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parents:
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changeset
|
493 continue |
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cygwin: add cygwin specific normcase logic
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parents:
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diff
changeset
|
494 |
c51c9dc13a58
cygwin: add cygwin specific normcase logic
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parents:
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changeset
|
495 mplen = len(mp) |
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changeset
|
496 if mplen == pathlen: # mount point itself |
15711
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parents:
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|
497 return mp |
30619
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py3: replace os.sep with pycompat.ossep (part 2 of 4)
Pulkit Goyal <7895pulkit@gmail.com>
parents:
30617
diff
changeset
|
498 if path[mplen] == pycompat.ossep: |
17203
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util, posix: eliminate encodinglower and encodingupper
Adrian Buehlmann <adrian@cadifra.com>
parents:
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diff
changeset
|
499 return mp + encoding.upper(path[mplen:]) |
15711
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parents:
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diff
changeset
|
500 |
17203
0cb55b5c19a3
util, posix: eliminate encodinglower and encodingupper
Adrian Buehlmann <adrian@cadifra.com>
parents:
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changeset
|
501 return encoding.upper(path) |
15711
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
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diff
changeset
|
502 |
24596
75ea27f1711d
cygwin: define normcase spec and fallback
Siddharth Agarwal <sid0@fb.com>
parents:
24595
diff
changeset
|
503 normcasespec = encoding.normcasespecs.other |
75ea27f1711d
cygwin: define normcase spec and fallback
Siddharth Agarwal <sid0@fb.com>
parents:
24595
diff
changeset
|
504 normcasefallback = normcase |
75ea27f1711d
cygwin: define normcase spec and fallback
Siddharth Agarwal <sid0@fb.com>
parents:
24595
diff
changeset
|
505 |
16240
95e45abe7e8e
posix: ignore execution bit in cygwin (issue3301)
A. S. Budden <abudden@gmail.com>
parents:
15791
diff
changeset
|
506 # Cygwin translates native ACLs to POSIX permissions, |
95e45abe7e8e
posix: ignore execution bit in cygwin (issue3301)
A. S. Budden <abudden@gmail.com>
parents:
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diff
changeset
|
507 # but these translations are not supported by native |
95e45abe7e8e
posix: ignore execution bit in cygwin (issue3301)
A. S. Budden <abudden@gmail.com>
parents:
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diff
changeset
|
508 # tools, so the exec bit tends to be set erroneously. |
95e45abe7e8e
posix: ignore execution bit in cygwin (issue3301)
A. S. Budden <abudden@gmail.com>
parents:
15791
diff
changeset
|
509 # Therefore, disable executable bit access on Cygwin. |
49907
58dff81ffba1
typing: add type hints to the common posix/windows platform functions
Matt Harbison <matt_harbison@yahoo.com>
parents:
49906
diff
changeset
|
510 def checkexec(path: bytes) -> bool: |
16240
95e45abe7e8e
posix: ignore execution bit in cygwin (issue3301)
A. S. Budden <abudden@gmail.com>
parents:
15791
diff
changeset
|
511 return False |
95e45abe7e8e
posix: ignore execution bit in cygwin (issue3301)
A. S. Budden <abudden@gmail.com>
parents:
15791
diff
changeset
|
512 |
16241
60cc3a0d2249
posix: disable cygwin's symlink emulation
Matt Mackall <mpm@selenic.com>
parents:
16240
diff
changeset
|
513 # Similarly, Cygwin's symlink emulation is likely to create |
60cc3a0d2249
posix: disable cygwin's symlink emulation
Matt Mackall <mpm@selenic.com>
parents:
16240
diff
changeset
|
514 # problems when Mercurial is used from both Cygwin and native |
60cc3a0d2249
posix: disable cygwin's symlink emulation
Matt Mackall <mpm@selenic.com>
parents:
16240
diff
changeset
|
515 # Windows, with other native tools, or on shared volumes |
49907
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typing: add type hints to the common posix/windows platform functions
Matt Harbison <matt_harbison@yahoo.com>
parents:
49906
diff
changeset
|
516 def checklink(path: bytes) -> bool: |
16241
60cc3a0d2249
posix: disable cygwin's symlink emulation
Matt Mackall <mpm@selenic.com>
parents:
16240
diff
changeset
|
517 return False |
60cc3a0d2249
posix: disable cygwin's symlink emulation
Matt Mackall <mpm@selenic.com>
parents:
16240
diff
changeset
|
518 |
43076
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parents:
42189
diff
changeset
|
519 |
23683
5edb387158a1
posix: quote the specified string only when it may have to be quoted
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
23597
diff
changeset
|
520 _needsshellquote = None |
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parents:
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diff
changeset
|
521 |
2372284d9457
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parents:
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diff
changeset
|
522 |
49907
58dff81ffba1
typing: add type hints to the common posix/windows platform functions
Matt Harbison <matt_harbison@yahoo.com>
parents:
49906
diff
changeset
|
523 def shellquote(s: bytes) -> bytes: |
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parents:
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changeset
|
524 if pycompat.sysplatform == b'OpenVMS': |
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
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parents:
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diff
changeset
|
525 return b'"%s"' % s |
23683
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posix: quote the specified string only when it may have to be quoted
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
23597
diff
changeset
|
526 global _needsshellquote |
5edb387158a1
posix: quote the specified string only when it may have to be quoted
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
23597
diff
changeset
|
527 if _needsshellquote is None: |
31498
492c64afc54c
py3: make the regular expression bytes to prevent TypeError
Pulkit Goyal <7895pulkit@gmail.com>
parents:
30697
diff
changeset
|
528 _needsshellquote = re.compile(br'[^a-zA-Z0-9._/+-]').search |
24108
d65ecb814fc0
shellquote: fix missing quotes for empty string
Yuya Nishihara <yuya@tcha.org>
parents:
23683
diff
changeset
|
529 if s and not _needsshellquote(s): |
23683
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posix: quote the specified string only when it may have to be quoted
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
23597
diff
changeset
|
530 # "s" shouldn't have to be quoted |
5edb387158a1
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parents:
23597
diff
changeset
|
531 return s |
7890
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util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
532 else: |
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Augie Fackler <augie@google.com>
parents:
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changeset
|
533 return b"'%s'" % s.replace(b"'", b"'\\''") |
7890
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util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
534 |
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changeset
|
535 |
49907
58dff81ffba1
typing: add type hints to the common posix/windows platform functions
Matt Harbison <matt_harbison@yahoo.com>
parents:
49906
diff
changeset
|
536 def shellsplit(s: bytes) -> List[bytes]: |
36445
0cb09c322647
util: factor out shellsplit() function
Yuya Nishihara <yuya@tcha.org>
parents:
36336
diff
changeset
|
537 """Parse a command string in POSIX shell way (best-effort)""" |
0cb09c322647
util: factor out shellsplit() function
Yuya Nishihara <yuya@tcha.org>
parents:
36336
diff
changeset
|
538 return pycompat.shlexsplit(s, posix=True) |
0cb09c322647
util: factor out shellsplit() function
Yuya Nishihara <yuya@tcha.org>
parents:
36336
diff
changeset
|
539 |
43076
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parents:
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diff
changeset
|
540 |
49906
0a91aba258e0
typing: add type hints to the posix platform module matching win32.py
Matt Harbison <matt_harbison@yahoo.com>
parents:
49905
diff
changeset
|
541 def testpid(pid: int) -> bool: |
7890
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
542 '''return False if pid dead, True if running or not sure''' |
43077
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formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
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changeset
|
543 if pycompat.sysplatform == b'OpenVMS': |
7890
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
544 return True |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
545 try: |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
546 os.kill(pid, 0) |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
547 return True |
25660
328739ea70c3
global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25658
diff
changeset
|
548 except OSError as inst: |
7890
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
549 return inst.errno != errno.ESRCH |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
550 |
43076
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changeset
|
551 |
49907
58dff81ffba1
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Matt Harbison <matt_harbison@yahoo.com>
parents:
49906
diff
changeset
|
552 def isowner(st: os.stat_result) -> bool: |
8657
3fa92c618624
posix: do not use fstat in isowner
Martin Geisler <mg@lazybytes.net>
parents:
8614
diff
changeset
|
553 """Return True if the stat object st is from the current user.""" |
7890
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
554 return st.st_uid == os.getuid() |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
555 |
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changeset
|
556 |
49907
58dff81ffba1
typing: add type hints to the common posix/windows platform functions
Matt Harbison <matt_harbison@yahoo.com>
parents:
49906
diff
changeset
|
557 def findexe(command: bytes) -> Optional[bytes]: |
45957
89a2afe31e82
formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents:
45718
diff
changeset
|
558 """Find executable for command searching like which does. |
7890
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
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559 If command is a basename then PATH is searched for command. |
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parents:
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|
560 PATH isn't searched if command is an absolute or relative path. |
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parents:
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561 If command isn't found None is returned.""" |
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562 if pycompat.sysplatform == b'OpenVMS': |
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563 return command |
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|
564 |
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|
565 def findexisting(executable: bytes) -> Optional[bytes]: |
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parents:
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diff
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|
566 b'Will return executable if existing file' |
15499
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posix: fix findexe() to check for file type and access
Marc-Antoine Ruel <maruel@google.com>
parents:
15488
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|
567 if os.path.isfile(executable) and os.access(executable, os.X_OK): |
7890
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568 return executable |
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Matt Mackall <mpm@selenic.com>
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|
569 return None |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
570 |
30619
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py3: replace os.sep with pycompat.ossep (part 2 of 4)
Pulkit Goyal <7895pulkit@gmail.com>
parents:
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diff
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|
571 if pycompat.ossep in command: |
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parents:
diff
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572 return findexisting(command) |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
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|
573 |
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574 if pycompat.sysplatform == b'plan9': |
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Augie Fackler <augie@google.com>
parents:
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575 return findexisting(os.path.join(b'/bin', command)) |
16383
f5dd179bfa4a
plan9: initial support for plan 9 from bell labs
Steven Stallion <sstallion@gmail.com>
parents:
16241
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|
576 |
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Augie Fackler <augie@google.com>
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577 for path in encoding.environ.get(b'PATH', b'').split(pycompat.ospathsep): |
7890
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parents:
diff
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|
578 executable = findexisting(os.path.join(path, command)) |
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diff
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579 if executable is not None: |
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posix: fix findexe() to check for file type and access
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parents:
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580 return executable |
7890
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Matt Mackall <mpm@selenic.com>
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|
581 return None |
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Matt Mackall <mpm@selenic.com>
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|
582 |
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583 |
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parents:
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diff
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|
584 def setsignalhandler() -> None: |
7890
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parents:
diff
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|
585 pass |
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Matt Mackall <mpm@selenic.com>
parents:
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changeset
|
586 |
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diff
changeset
|
587 |
32331
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cleanup: use set literals
Martin von Zweigbergk <martinvonz@google.com>
parents:
32182
diff
changeset
|
588 _wantedkinds = {stat.S_IFREG, stat.S_IFLNK} |
18017
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Bryan O'Sullivan <bryano@fb.com>
parents:
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589 |
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590 |
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parents:
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diff
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|
591 def statfiles(files: Sequence[bytes]) -> Iterator[Optional[os.stat_result]]: |
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Augie Fackler <raf@durin42.com>
parents:
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592 """Stat each file in files. Yield each stat, or None if a file does not |
89a2afe31e82
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Augie Fackler <raf@durin42.com>
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593 exist or has a type we don't care about.""" |
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parents:
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|
594 lstat = os.lstat |
18017
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Bryan O'Sullivan <bryano@fb.com>
parents:
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595 getkind = stat.S_IFMT |
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parents:
diff
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|
596 for nf in files: |
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
597 try: |
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Matt Mackall <mpm@selenic.com>
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diff
changeset
|
598 st = lstat(nf) |
18017
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Bryan O'Sullivan <bryano@fb.com>
parents:
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|
599 if getkind(st.st_mode) not in _wantedkinds: |
74912fe3d718
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Bryan O'Sullivan <bryano@fb.com>
parents:
17560
diff
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|
600 st = None |
49318
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py3: catch specific OSError subclasses instead of checking errno
Manuel Jacob <me@manueljacob.de>
parents:
49315
diff
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|
601 except (FileNotFoundError, NotADirectoryError): |
7890
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util: split out posix, windows, and win32 modules
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parents:
diff
changeset
|
602 st = None |
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
603 yield st |
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util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
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|
604 |
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parents:
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diff
changeset
|
605 |
49906
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Matt Harbison <matt_harbison@yahoo.com>
parents:
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diff
changeset
|
606 def getuser() -> bytes: |
7890
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parents:
diff
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|
607 '''return name of current user''' |
32182
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py3: make posix.getuser return a bytes
Pulkit Goyal <7895pulkit@gmail.com>
parents:
31545
diff
changeset
|
608 return pycompat.fsencode(getpass.getuser()) |
7890
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Matt Mackall <mpm@selenic.com>
parents:
diff
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|
609 |
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changeset
|
610 |
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parents:
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|
611 def username(uid: Optional[int] = None) -> Optional[bytes]: |
7890
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parents:
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|
612 """Return the name of the user with the given uid. |
e710f0f592b2
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parents:
diff
changeset
|
613 |
e710f0f592b2
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|
614 If uid is None, return the name of the current user.""" |
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changeset
|
615 |
e710f0f592b2
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diff
changeset
|
616 if uid is None: |
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Matt Mackall <mpm@selenic.com>
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|
617 uid = os.getuid() |
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Matt Mackall <mpm@selenic.com>
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diff
changeset
|
618 try: |
38264
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py3: make sure util.username() always returns bytes
Pulkit Goyal <7895pulkit@gmail.com>
parents:
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diff
changeset
|
619 return pycompat.fsencode(pwd.getpwuid(uid)[0]) |
7890
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620 except KeyError: |
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|
621 return b'%d' % uid |
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|
622 |
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623 |
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|
624 def groupname(gid: Optional[int] = None) -> Optional[bytes]: |
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parents:
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changeset
|
625 """Return the name of the group with the given gid. |
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
626 |
e710f0f592b2
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changeset
|
627 If gid is None, return the name of the current group.""" |
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diff
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|
628 |
e710f0f592b2
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diff
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|
629 if gid is None: |
e710f0f592b2
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diff
changeset
|
630 gid = os.getgid() |
e710f0f592b2
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parents:
diff
changeset
|
631 try: |
41832
faa04f45b5fe
py3: make sure return value of posix.groupname() is bytes
Pulkit Goyal <pulkit@yandex-team.ru>
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diff
changeset
|
632 return pycompat.fsencode(grp.getgrgid(gid)[0]) |
7890
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parents:
diff
changeset
|
633 except KeyError: |
41832
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py3: make sure return value of posix.groupname() is bytes
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parents:
41537
diff
changeset
|
634 return pycompat.bytestr(gid) |
10237
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changeset
|
635 |
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|
636 |
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changeset
|
637 def groupmembers(name: bytes) -> List[bytes]: |
11138
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acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
11011
diff
changeset
|
638 """Return the list of members of the group with the given |
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
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diff
changeset
|
639 name, KeyError if the group does not exist. |
99eee847beaa
acl: grp module is not available on windows
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parents:
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diff
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|
640 """ |
41537
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Pulkit Goyal <pulkit@yandex-team.ru>
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|
641 name = pycompat.fsdecode(name) |
3ef8bec91465
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parents:
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diff
changeset
|
642 return pycompat.rapply(pycompat.fsencode, list(grp.getgrnam(name).gr_mem)) |
11138
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acl: grp module is not available on windows
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parents:
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diff
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|
643 |
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|
644 |
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|
645 def spawndetached(args: List[bytes]) -> int: |
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|
646 return os.spawnvp(os.P_NOWAIT | getattr(os, 'P_DETACH', 0), args[0], args) |
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|
647 |
10237
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serve: add and use portable spawnvp replacement
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parents:
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changeset
|
648 |
10239
8e4be44a676f
Find right hg command for detached process
Patrick Mezard <pmezard@gmail.com>
parents:
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changeset
|
649 def gethgcmd(): |
8e4be44a676f
Find right hg command for detached process
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parents:
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changeset
|
650 return sys.argv[:1] |
11010
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
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changeset
|
651 |
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|
652 |
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parents:
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changeset
|
653 def makedir(path: bytes, notindexed: bool) -> None: |
14908
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util: move "default" makedir to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14273
diff
changeset
|
654 os.mkdir(path) |
14909
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util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14908
diff
changeset
|
655 |
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changeset
|
656 |
49907
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|
657 def lookupreg( |
58dff81ffba1
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|
658 key: bytes, |
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|
659 name: Optional[bytes] = None, |
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49906
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changeset
|
660 scope: Optional[Union[int, Iterable[int]]] = None, |
58dff81ffba1
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|
661 ) -> Optional[bytes]: |
14910
570ea0259b0a
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Adrian Buehlmann <adrian@cadifra.com>
parents:
14909
diff
changeset
|
662 return None |
14911
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parents:
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changeset
|
663 |
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|
664 |
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changeset
|
665 def hidewindow() -> None: |
14911
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changeset
|
666 """Hide current shell window. |
5b39503157fd
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14910
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changeset
|
667 |
5b39503157fd
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parents:
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diff
changeset
|
668 Used to hide the window opened when starting asynchronous |
5b39503157fd
util: move "default" hidewindow to posix.py
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parents:
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diff
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|
669 child process under Windows, unneeded on other systems. |
5b39503157fd
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parents:
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|
670 """ |
5b39503157fd
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Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
671 pass |
14926
4e7e63fc685a
util: eliminate wildcard imports
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parents:
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changeset
|
672 |
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changeset
|
673 |
49037
642e31cb55f0
py3: use class X: instead of class X(object):
Gregory Szorc <gregory.szorc@gmail.com>
parents:
48976
diff
changeset
|
674 class cachestat: |
14927
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
675 def __init__(self, path): |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
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676 self.stat = os.stat(path) |
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677 |
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678 def cacheable(self): |
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679 return bool(self.stat.st_ino) |
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680 |
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681 __hash__ = object.__hash__ |
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682 |
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683 def __eq__(self, other): |
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684 try: |
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685 # Only dev, ino, size, mtime and atime are likely to change. Out |
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686 # of these, we shouldn't compare atime but should compare the |
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687 # rest. However, one of the other fields changing indicates |
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688 # something fishy going on, so return False if anything but atime |
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689 # changes. |
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690 return ( |
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691 self.stat.st_mode == other.stat.st_mode |
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692 and self.stat.st_ino == other.stat.st_ino |
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693 and self.stat.st_dev == other.stat.st_dev |
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694 and self.stat.st_nlink == other.stat.st_nlink |
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695 and self.stat.st_uid == other.stat.st_uid |
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696 and self.stat.st_gid == other.stat.st_gid |
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697 and self.stat.st_size == other.stat.st_size |
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698 and self.stat[stat.ST_MTIME] == other.stat[stat.ST_MTIME] |
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699 and self.stat[stat.ST_CTIME] == other.stat[stat.ST_CTIME] |
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700 ) |
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701 except AttributeError: |
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|
702 return False |
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|
703 |
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|
704 def __ne__(self, other): |
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705 return not self == other |
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706 |
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707 |
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|
708 def statislink(st: Optional[os.stat_result]) -> bool: |
18868
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Bryan O'Sullivan <bryano@fb.com>
parents:
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diff
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|
709 '''check whether a stat result is a symlink''' |
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|
710 return stat.S_ISLNK(st.st_mode) if st else False |
18868
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711 |
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712 |
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|
713 def statisexec(st: Optional[os.stat_result]) -> bool: |
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parents:
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714 '''check whether a stat result is an executable file''' |
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|
715 return (st.st_mode & 0o100 != 0) if st else False |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
716 |
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717 |
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718 def poll(fds): |
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719 """block until something happens on any file descriptor |
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720 |
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|
721 This is a generic helper that will check for any activity |
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|
722 (read, write. exception) and return the list of touched files. |
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723 |
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724 In unsupported cases, it will raise a NotImplementedError""" |
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|
725 try: |
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Manuel Jacob <me@manueljacob.de>
parents:
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|
726 res = select.select(fds, fds, fds) |
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727 except ValueError: # out of range file descriptor |
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728 raise NotImplementedError() |
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729 return sorted(list(set(sum(res, [])))) |
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730 |
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731 |
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732 def readpipe(pipe) -> bytes: |
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diff
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|
733 """Read all available data from a pipe.""" |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
734 # We can't fstat() a pipe because Linux will always report 0. |
331cbf088c4c
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|
735 # So, we set the pipe to non-blocking mode and read everything |
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|
736 # that's available. |
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|
737 flags = fcntl.fcntl(pipe, fcntl.F_GETFL) |
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|
738 flags |= os.O_NONBLOCK |
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diff
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|
739 oldflags = fcntl.fcntl(pipe, fcntl.F_SETFL, flags) |
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|
740 |
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|
741 try: |
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|
742 chunks = [] |
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|
743 while True: |
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parents:
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744 try: |
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|
745 s = pipe.read() |
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|
746 if not s: |
331cbf088c4c
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parents:
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|
747 break |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
748 chunks.append(s) |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
749 except IOError: |
331cbf088c4c
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Gregory Szorc <gregory.szorc@gmail.com>
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changeset
|
750 break |
331cbf088c4c
posix: implement readpipe using non-blocking I/O (issue4336)
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parents:
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changeset
|
751 |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
752 return b''.join(chunks) |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
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|
753 finally: |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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changeset
|
754 fcntl.fcntl(pipe, fcntl.F_SETFL, oldflags) |
29530
3239e2fdd2e2
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parents:
27380
diff
changeset
|
755 |
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|
756 |
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Matt Harbison <matt_harbison@yahoo.com>
parents:
49906
diff
changeset
|
757 def bindunixsocket(sock, path: bytes) -> None: |
29530
3239e2fdd2e2
chgserver: extract utility to bind unix domain socket to long path
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parents:
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diff
changeset
|
758 """Bind the UNIX domain socket to the specified path""" |
3239e2fdd2e2
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Yuya Nishihara <yuya@tcha.org>
parents:
27380
diff
changeset
|
759 # use relative path instead of full path at bind() if possible, since |
3239e2fdd2e2
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Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
760 # AF_UNIX path has very small length limit (107 chars) on common |
3239e2fdd2e2
chgserver: extract utility to bind unix domain socket to long path
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parents:
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diff
changeset
|
761 # platforms (see sys/un.h) |
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Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
762 dirname, basename = os.path.split(path) |
3239e2fdd2e2
chgserver: extract utility to bind unix domain socket to long path
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
763 bakwdfd = None |
45718
87c35b5a14eb
posix: avoid a leaked file descriptor in a unix domain socket exception case
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parents:
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diff
changeset
|
764 |
87c35b5a14eb
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Matt Harbison <matt_harbison@yahoo.com>
parents:
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diff
changeset
|
765 try: |
87c35b5a14eb
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Matt Harbison <matt_harbison@yahoo.com>
parents:
45717
diff
changeset
|
766 if dirname: |
87c35b5a14eb
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Matt Harbison <matt_harbison@yahoo.com>
parents:
45717
diff
changeset
|
767 bakwdfd = os.open(b'.', os.O_DIRECTORY) |
87c35b5a14eb
posix: avoid a leaked file descriptor in a unix domain socket exception case
Matt Harbison <matt_harbison@yahoo.com>
parents:
45717
diff
changeset
|
768 os.chdir(dirname) |
87c35b5a14eb
posix: avoid a leaked file descriptor in a unix domain socket exception case
Matt Harbison <matt_harbison@yahoo.com>
parents:
45717
diff
changeset
|
769 sock.bind(basename) |
87c35b5a14eb
posix: avoid a leaked file descriptor in a unix domain socket exception case
Matt Harbison <matt_harbison@yahoo.com>
parents:
45717
diff
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|
770 if bakwdfd: |
87c35b5a14eb
posix: avoid a leaked file descriptor in a unix domain socket exception case
Matt Harbison <matt_harbison@yahoo.com>
parents:
45717
diff
changeset
|
771 os.fchdir(bakwdfd) |
87c35b5a14eb
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Matt Harbison <matt_harbison@yahoo.com>
parents:
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diff
changeset
|
772 finally: |
87c35b5a14eb
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Matt Harbison <matt_harbison@yahoo.com>
parents:
45717
diff
changeset
|
773 if bakwdfd: |
87c35b5a14eb
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Matt Harbison <matt_harbison@yahoo.com>
parents:
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diff
changeset
|
774 os.close(bakwdfd) |