Mercurial > hg
annotate mercurial/posix.py @ 26755:bb0b955d050d
streamclone: support for producing and consuming stream clone bundles
Up to this point, stream clones only existed as a dynamically generated
data format produced and consumed during streaming clones. In order to
support this efficient cloning format with the clone bundles feature, we
need a more formal, on disk representation of the streaming clone data.
This patch introduces a new "bundle" type for streaming clones. Unlike
existing bundles, it does not contain changegroup data. It does,
however, share the same concepts like the 4 byte header which identifies
the type of data that follows and the 2 byte abbreviation for
compression types (of which only "UN" is currently supported).
The new bundle format is essentially the existing stream clone version 1
data format with some headers at the beginning.
Content negotiation at stream clone request time checked for repository
format/requirements compatibility before initiating a stream clone. We
can't do active content negotiation when using clone bundles. So, we put
this set of requirements inside the payload so consumers have a built-in
mechanism for checking compatibility before reading and applying lots of
data. Of course, we will also advertise this requirements set in clone
bundles. But that's for another patch.
We currently don't have a mechanism to produce and consume this new
bundle format. This will be implemented in upcoming patches.
It's worth noting that if a legacy client attempts to `hg unbundle` a
stream clone bundle (with the "HGS1" header), it will abort with:
"unknown bundle version S1," which seems appropriate.
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Sat, 17 Oct 2015 11:14:52 -0700 |
parents | 99b6afff09ae |
children | b8381832ce2b c750ed59892a |
rev | line source |
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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 Matt Mackall <mpm@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 from __future__ import absolute_import |
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9 |
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10 import errno |
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11 import fcntl |
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12 import getpass |
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13 import grp |
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14 import os |
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15 import pwd |
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16 import re |
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17 import select |
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18 import socket |
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19 import stat |
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20 import sys |
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21 import tempfile |
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22 import unicodedata |
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23 |
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24 from .i18n import _ |
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25 from . import ( |
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26 encoding, |
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27 ) |
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28 |
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29 posixfile = open |
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30 normpath = os.path.normpath |
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31 samestat = os.path.samestat |
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32 oslink = os.link |
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33 unlink = os.unlink |
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34 rename = os.rename |
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35 removedirs = os.removedirs |
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36 expandglobs = False |
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37 |
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38 umask = os.umask(0) |
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39 os.umask(umask) |
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40 |
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41 def split(p): |
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42 '''Same as posixpath.split, but faster |
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43 |
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44 >>> import posixpath |
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45 >>> for f in ['/absolute/path/to/file', |
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46 ... 'relative/path/to/file', |
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47 ... 'file_alone', |
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48 ... 'path/to/directory/', |
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49 ... '/multiple/path//separators', |
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50 ... '/file_at_root', |
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51 ... '///multiple_leading_separators_at_root', |
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52 ... '']: |
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53 ... assert split(f) == posixpath.split(f), f |
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54 ''' |
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55 ht = p.rsplit('/', 1) |
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56 if len(ht) == 1: |
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57 return '', p |
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58 nh = ht[0].rstrip('/') |
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59 if nh: |
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60 return nh, ht[1] |
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61 return ht[0] + '/', ht[1] |
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62 |
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63 def openhardlinks(): |
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64 '''return true if it is safe to hold open file handles to hardlinks''' |
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65 return True |
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66 |
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67 def nlinks(name): |
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68 '''return number of hardlinks for the given file''' |
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69 return os.lstat(name).st_nlink |
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70 |
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71 def parsepatchoutput(output_line): |
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72 """parses the output produced by patch and returns the filename""" |
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73 pf = output_line[14:] |
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74 if os.sys.platform == 'OpenVMS': |
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75 if pf[0] == '`': |
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76 pf = pf[1:-1] # Remove the quotes |
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77 else: |
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78 if pf.startswith("'") and pf.endswith("'") and " " in pf: |
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79 pf = pf[1:-1] # Remove the quotes |
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80 return pf |
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81 |
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82 def sshargs(sshcmd, host, user, port): |
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83 '''Build argument list for ssh''' |
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84 args = user and ("%s@%s" % (user, host)) or host |
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85 return port and ("%s -p %s" % (args, port)) or args |
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86 |
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87 def isexec(f): |
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88 """check whether a file is executable""" |
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89 return (os.lstat(f).st_mode & 0o100 != 0) |
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90 |
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91 def setflags(f, l, x): |
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92 s = os.lstat(f).st_mode |
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93 if l: |
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94 if not stat.S_ISLNK(s): |
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95 # switch file to link |
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96 fp = open(f) |
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97 data = fp.read() |
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98 fp.close() |
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99 os.unlink(f) |
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100 try: |
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101 os.symlink(data, f) |
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102 except OSError: |
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103 # failed to make a link, rewrite file |
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104 fp = open(f, "w") |
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105 fp.write(data) |
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106 fp.close() |
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107 # no chmod needed at this point |
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108 return |
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109 if stat.S_ISLNK(s): |
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110 # switch link to file |
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111 data = os.readlink(f) |
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112 os.unlink(f) |
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113 fp = open(f, "w") |
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114 fp.write(data) |
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115 fp.close() |
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116 s = 0o666 & ~umask # avoid restatting for chmod |
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117 |
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118 sx = s & 0o100 |
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119 if x and not sx: |
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120 # Turn on +x for every +r bit when making a file executable |
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121 # and obey umask. |
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122 os.chmod(f, s | (s & 0o444) >> 2 & ~umask) |
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123 elif not x and sx: |
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124 # Turn off all +x bits |
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125 os.chmod(f, s & 0o666) |
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126 |
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127 def copymode(src, dst, mode=None): |
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128 '''Copy the file mode from the file at path src to dst. |
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129 If src doesn't exist, we're using mode instead. If mode is None, we're |
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130 using umask.''' |
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131 try: |
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132 st_mode = os.lstat(src).st_mode & 0o777 |
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133 except OSError as inst: |
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134 if inst.errno != errno.ENOENT: |
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135 raise |
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136 st_mode = mode |
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137 if st_mode is None: |
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138 st_mode = ~umask |
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139 st_mode &= 0o666 |
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140 os.chmod(dst, st_mode) |
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141 |
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142 def checkexec(path): |
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143 """ |
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144 Check whether the given path is on a filesystem with UNIX-like exec flags |
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145 |
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146 Requires a directory (like /foo/.hg) |
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147 """ |
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148 |
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149 # VFAT on some Linux versions can flip mode but it doesn't persist |
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150 # a FS remount. Frequently we can detect it if files are created |
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151 # with exec bit on. |
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152 |
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153 try: |
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154 EXECFLAGS = stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH |
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155 fh, fn = tempfile.mkstemp(dir=path, prefix='hg-checkexec-') |
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156 try: |
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157 os.close(fh) |
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158 m = os.stat(fn).st_mode & 0o777 |
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159 new_file_has_exec = m & EXECFLAGS |
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160 os.chmod(fn, m ^ EXECFLAGS) |
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161 exec_flags_cannot_flip = ((os.stat(fn).st_mode & 0o777) == m) |
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162 finally: |
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163 os.unlink(fn) |
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164 except (IOError, OSError): |
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165 # we don't care, the user probably won't be able to commit anyway |
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166 return False |
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167 return not (new_file_has_exec or exec_flags_cannot_flip) |
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168 |
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169 def checklink(path): |
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170 """check whether the given path is on a symlink-capable filesystem""" |
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171 # mktemp is not racy because symlink creation will fail if the |
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172 # file already exists |
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173 name = tempfile.mktemp(dir=path, prefix='hg-checklink-') |
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174 try: |
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175 fd = tempfile.NamedTemporaryFile(dir=path, prefix='hg-checklink-') |
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176 try: |
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177 os.symlink(os.path.basename(fd.name), name) |
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178 os.unlink(name) |
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179 return True |
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180 finally: |
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181 fd.close() |
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182 except AttributeError: |
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183 return False |
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184 except OSError as inst: |
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185 # sshfs might report failure while successfully creating the link |
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186 if inst[0] == errno.EIO and os.path.exists(name): |
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187 os.unlink(name) |
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188 return False |
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189 |
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190 def checkosfilename(path): |
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191 '''Check that the base-relative path is a valid filename on this platform. |
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192 Returns None if the path is ok, or a UI string describing the problem.''' |
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193 pass # on posix platforms, every path is ok |
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194 |
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195 def setbinary(fd): |
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196 pass |
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197 |
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198 def pconvert(path): |
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199 return path |
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200 |
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201 def localpath(path): |
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202 return path |
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203 |
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204 def samefile(fpath1, fpath2): |
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205 """Returns whether path1 and path2 refer to the same file. This is only |
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206 guaranteed to work for files, not directories.""" |
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207 return os.path.samefile(fpath1, fpath2) |
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208 |
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209 def samedevice(fpath1, fpath2): |
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210 """Returns whether fpath1 and fpath2 are on the same device. This is only |
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211 guaranteed to work for files, not directories.""" |
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212 st1 = os.lstat(fpath1) |
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213 st2 = os.lstat(fpath2) |
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214 return st1.st_dev == st2.st_dev |
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215 |
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216 # os.path.normcase is a no-op, which doesn't help us on non-native filesystems |
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217 def normcase(path): |
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218 return path.lower() |
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219 |
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220 # what normcase does to ASCII strings |
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221 normcasespec = encoding.normcasespecs.lower |
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222 # fallback normcase function for non-ASCII strings |
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223 normcasefallback = normcase |
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224 |
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225 if sys.platform == 'darwin': |
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226 |
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227 def normcase(path): |
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228 ''' |
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229 Normalize a filename for OS X-compatible comparison: |
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230 - escape-encode invalid characters |
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231 - decompose to NFD |
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232 - lowercase |
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233 - omit ignored characters [200c-200f, 202a-202e, 206a-206f,feff] |
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234 |
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235 >>> normcase('UPPER') |
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236 'upper' |
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237 >>> normcase('Caf\xc3\xa9') |
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238 'cafe\\xcc\\x81' |
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239 >>> normcase('\xc3\x89') |
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240 'e\\xcc\\x81' |
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241 >>> normcase('\xb8\xca\xc3\xca\xbe\xc8.JPG') # issue3918 |
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242 '%b8%ca%c3\\xca\\xbe%c8.jpg' |
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243 ''' |
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244 |
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245 try: |
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246 return encoding.asciilower(path) # exception for non-ASCII |
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247 except UnicodeDecodeError: |
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248 return normcasefallback(path) |
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249 |
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250 normcasespec = encoding.normcasespecs.lower |
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251 |
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252 def normcasefallback(path): |
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253 try: |
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254 u = path.decode('utf-8') |
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255 except UnicodeDecodeError: |
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256 # OS X percent-encodes any bytes that aren't valid utf-8 |
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257 s = '' |
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258 g = '' |
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259 l = 0 |
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260 for c in path: |
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261 o = ord(c) |
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262 if l and o < 128 or o >= 192: |
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263 # we want a continuation byte, but didn't get one |
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264 s += ''.join(["%%%02X" % ord(x) for x in g]) |
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265 g = '' |
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266 l = 0 |
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267 if l == 0 and o < 128: |
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268 # ascii |
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269 s += c |
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270 elif l == 0 and 194 <= o < 245: |
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271 # valid leading bytes |
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272 if o < 224: |
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273 l = 1 |
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274 elif o < 240: |
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275 l = 2 |
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276 else: |
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277 l = 3 |
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278 g = c |
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279 elif l > 0 and 128 <= o < 192: |
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280 # valid continuations |
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281 g += c |
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282 l -= 1 |
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283 if not l: |
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284 s += g |
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285 g = '' |
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286 else: |
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287 # invalid |
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288 s += "%%%02X" % o |
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289 |
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290 # any remaining partial characters |
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291 s += ''.join(["%%%02X" % ord(x) for x in g]) |
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292 u = s.decode('utf-8') |
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293 |
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294 # Decompose then lowercase (HFS+ technote specifies lower) |
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295 enc = unicodedata.normalize('NFD', u).lower().encode('utf-8') |
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296 # drop HFS+ ignored characters |
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297 return encoding.hfsignoreclean(enc) |
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298 |
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299 if sys.platform == 'cygwin': |
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300 # workaround for cygwin, in which mount point part of path is |
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301 # treated as case sensitive, even though underlying NTFS is case |
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302 # insensitive. |
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303 |
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304 # default mount points |
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305 cygwinmountpoints = sorted([ |
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306 "/usr/bin", |
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307 "/usr/lib", |
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308 "/cygdrive", |
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309 ], reverse=True) |
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310 |
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311 # use upper-ing as normcase as same as NTFS workaround |
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312 def normcase(path): |
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313 pathlen = len(path) |
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314 if (pathlen == 0) or (path[0] != os.sep): |
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315 # treat as relative |
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316 return encoding.upper(path) |
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317 |
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318 # to preserve case of mountpoint part |
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319 for mp in cygwinmountpoints: |
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320 if not path.startswith(mp): |
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321 continue |
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322 |
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323 mplen = len(mp) |
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324 if mplen == pathlen: # mount point itself |
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325 return mp |
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326 if path[mplen] == os.sep: |
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327 return mp + encoding.upper(path[mplen:]) |
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328 |
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329 return encoding.upper(path) |
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330 |
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331 normcasespec = encoding.normcasespecs.other |
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332 normcasefallback = normcase |
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333 |
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334 # Cygwin translates native ACLs to POSIX permissions, |
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335 # but these translations are not supported by native |
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336 # tools, so the exec bit tends to be set erroneously. |
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337 # Therefore, disable executable bit access on Cygwin. |
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338 def checkexec(path): |
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339 return False |
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340 |
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341 # Similarly, Cygwin's symlink emulation is likely to create |
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342 # problems when Mercurial is used from both Cygwin and native |
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343 # Windows, with other native tools, or on shared volumes |
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344 def checklink(path): |
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345 return False |
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346 |
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347 _needsshellquote = None |
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348 def shellquote(s): |
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349 if os.sys.platform == 'OpenVMS': |
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350 return '"%s"' % s |
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351 global _needsshellquote |
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352 if _needsshellquote is None: |
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posix: shellquote do not require quoting for "+" (issue4818)
timeless@mozdev.org
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353 _needsshellquote = re.compile(r'[^a-zA-Z0-9._/+-]').search |
24108
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354 if s and not _needsshellquote(s): |
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355 # "s" shouldn't have to be quoted |
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356 return s |
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357 else: |
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358 return "'%s'" % s.replace("'", "'\\''") |
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359 |
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360 def quotecommand(cmd): |
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361 return cmd |
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362 |
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363 def popen(command, mode='r'): |
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364 return os.popen(command, mode) |
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365 |
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366 def testpid(pid): |
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367 '''return False if pid dead, True if running or not sure''' |
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368 if os.sys.platform == 'OpenVMS': |
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369 return True |
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370 try: |
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371 os.kill(pid, 0) |
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372 return True |
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global: mass rewrite to use modern exception syntax
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373 except OSError as inst: |
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374 return inst.errno != errno.ESRCH |
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375 |
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376 def explainexit(code): |
9517
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util.system: Use subprocess instead of os.system
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377 """return a 2-tuple (desc, code) describing a subprocess status |
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|
378 (codes from kill are negative - not os.system/wait encoding)""" |
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379 if code >= 0: |
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380 return _("exited with status %d") % code, code |
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381 return _("killed by signal %d") % -code, -code |
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382 |
8657
3fa92c618624
posix: do not use fstat in isowner
Martin Geisler <mg@lazybytes.net>
parents:
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383 def isowner(st): |
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posix: do not use fstat in isowner
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384 """Return True if the stat object st is from the current user.""" |
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385 return st.st_uid == os.getuid() |
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|
386 |
14271
4030630fb59c
rename util.find_exe to findexe
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387 def findexe(command): |
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388 '''Find executable for command searching like which does. |
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389 If command is a basename then PATH is searched for command. |
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390 PATH isn't searched if command is an absolute or relative path. |
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391 If command isn't found None is returned.''' |
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392 if sys.platform == 'OpenVMS': |
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393 return command |
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|
394 |
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395 def findexisting(executable): |
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|
396 'Will return executable if existing file' |
15499
58f96703a9ab
posix: fix findexe() to check for file type and access
Marc-Antoine Ruel <maruel@google.com>
parents:
15488
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|
397 if os.path.isfile(executable) and os.access(executable, os.X_OK): |
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398 return executable |
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|
399 return None |
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|
400 |
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parents:
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|
401 if os.sep in command: |
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|
402 return findexisting(command) |
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|
403 |
16383
f5dd179bfa4a
plan9: initial support for plan 9 from bell labs
Steven Stallion <sstallion@gmail.com>
parents:
16241
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|
404 if sys.platform == 'plan9': |
f5dd179bfa4a
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|
405 return findexisting(os.path.join('/bin', command)) |
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|
406 |
7890
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407 for path in os.environ.get('PATH', '').split(os.pathsep): |
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|
408 executable = findexisting(os.path.join(path, command)) |
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|
409 if executable is not None: |
15499
58f96703a9ab
posix: fix findexe() to check for file type and access
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parents:
15488
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|
410 return executable |
7890
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|
411 return None |
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parents:
diff
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|
412 |
14237
4d684d8210a1
rename util.set_signal_handler to setsignalhandler
Adrian Buehlmann <adrian@cadifra.com>
parents:
14235
diff
changeset
|
413 def setsignalhandler(): |
7890
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|
414 pass |
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parents:
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|
415 |
18017
74912fe3d718
dirstate: move file type filtering to its source
Bryan O'Sullivan <bryano@fb.com>
parents:
17560
diff
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|
416 _wantedkinds = set([stat.S_IFREG, stat.S_IFLNK]) |
74912fe3d718
dirstate: move file type filtering to its source
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|
417 |
7890
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|
418 def statfiles(files): |
18017
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|
419 '''Stat each file in files. Yield each stat, or None if a file does not |
74912fe3d718
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|
420 exist or has a type we don't care about.''' |
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|
421 lstat = os.lstat |
18017
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|
422 getkind = stat.S_IFMT |
7890
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|
423 for nf in files: |
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|
424 try: |
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|
425 st = lstat(nf) |
18017
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Bryan O'Sullivan <bryano@fb.com>
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diff
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|
426 if getkind(st.st_mode) not in _wantedkinds: |
74912fe3d718
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|
427 st = None |
25660
328739ea70c3
global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25658
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|
428 except OSError as err: |
7890
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|
429 if err.errno not in (errno.ENOENT, errno.ENOTDIR): |
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|
430 raise |
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|
431 st = None |
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|
432 yield st |
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|
433 |
e710f0f592b2
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parents:
diff
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|
434 def getuser(): |
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parents:
diff
changeset
|
435 '''return name of current user''' |
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Matt Mackall <mpm@selenic.com>
parents:
diff
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|
436 return getpass.getuser() |
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Matt Mackall <mpm@selenic.com>
parents:
diff
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|
437 |
e710f0f592b2
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|
438 def username(uid=None): |
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diff
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|
439 """Return the name of the user with the given uid. |
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Matt Mackall <mpm@selenic.com>
parents:
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|
440 |
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|
441 If uid is None, return the name of the current user.""" |
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Matt Mackall <mpm@selenic.com>
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|
442 |
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|
443 if uid is None: |
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parents:
diff
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|
444 uid = os.getuid() |
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diff
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|
445 try: |
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|
446 return pwd.getpwuid(uid)[0] |
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diff
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|
447 except KeyError: |
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Matt Mackall <mpm@selenic.com>
parents:
diff
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|
448 return str(uid) |
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Matt Mackall <mpm@selenic.com>
parents:
diff
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|
449 |
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Matt Mackall <mpm@selenic.com>
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|
450 def groupname(gid=None): |
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parents:
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|
451 """Return the name of the group with the given gid. |
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Matt Mackall <mpm@selenic.com>
parents:
diff
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|
452 |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
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|
453 If gid is None, return the name of the current group.""" |
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
454 |
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Matt Mackall <mpm@selenic.com>
parents:
diff
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|
455 if gid is None: |
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diff
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|
456 gid = os.getgid() |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
457 try: |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
458 return grp.getgrgid(gid)[0] |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
459 except KeyError: |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
460 return str(gid) |
10237
2f7a38f336f4
serve: add and use portable spawnvp replacement
Patrick Mezard <pmezard@gmail.com>
parents:
10218
diff
changeset
|
461 |
11138
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
11011
diff
changeset
|
462 def groupmembers(name): |
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
11011
diff
changeset
|
463 """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:
11011
diff
changeset
|
464 name, KeyError if the group does not exist. |
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
11011
diff
changeset
|
465 """ |
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
11011
diff
changeset
|
466 return list(grp.getgrnam(name).gr_mem) |
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
11011
diff
changeset
|
467 |
10237
2f7a38f336f4
serve: add and use portable spawnvp replacement
Patrick Mezard <pmezard@gmail.com>
parents:
10218
diff
changeset
|
468 def spawndetached(args): |
2f7a38f336f4
serve: add and use portable spawnvp replacement
Patrick Mezard <pmezard@gmail.com>
parents:
10218
diff
changeset
|
469 return os.spawnvp(os.P_NOWAIT | getattr(os, 'P_DETACH', 0), |
2f7a38f336f4
serve: add and use portable spawnvp replacement
Patrick Mezard <pmezard@gmail.com>
parents:
10218
diff
changeset
|
470 args[0], args) |
2f7a38f336f4
serve: add and use portable spawnvp replacement
Patrick Mezard <pmezard@gmail.com>
parents:
10218
diff
changeset
|
471 |
10239
8e4be44a676f
Find right hg command for detached process
Patrick Mezard <pmezard@gmail.com>
parents:
10237
diff
changeset
|
472 def gethgcmd(): |
8e4be44a676f
Find right hg command for detached process
Patrick Mezard <pmezard@gmail.com>
parents:
10237
diff
changeset
|
473 return sys.argv[:1] |
11010
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
474 |
12689
c52c629ce19e
termwidth: move to ui.ui from util
Augie Fackler <durin42@gmail.com>
parents:
11138
diff
changeset
|
475 def termwidth(): |
11010
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
476 try: |
25967
224a33452ed4
posix: use absolute_import
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25660
diff
changeset
|
477 import array |
224a33452ed4
posix: use absolute_import
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25660
diff
changeset
|
478 import termios |
11010
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
479 for dev in (sys.stderr, sys.stdout, sys.stdin): |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
480 try: |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
481 try: |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
482 fd = dev.fileno() |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
483 except AttributeError: |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
484 continue |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
485 if not os.isatty(fd): |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
486 continue |
16726
7002bb17cc5e
posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents:
16383
diff
changeset
|
487 try: |
7002bb17cc5e
posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents:
16383
diff
changeset
|
488 arri = fcntl.ioctl(fd, termios.TIOCGWINSZ, '\0' * 8) |
7002bb17cc5e
posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents:
16383
diff
changeset
|
489 width = array.array('h', arri)[1] |
7002bb17cc5e
posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents:
16383
diff
changeset
|
490 if width > 0: |
7002bb17cc5e
posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents:
16383
diff
changeset
|
491 return width |
7002bb17cc5e
posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents:
16383
diff
changeset
|
492 except AttributeError: |
7002bb17cc5e
posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents:
16383
diff
changeset
|
493 pass |
11010
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
494 except ValueError: |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
495 pass |
25660
328739ea70c3
global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25658
diff
changeset
|
496 except IOError as e: |
11010
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
497 if e[0] == errno.EINVAL: |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
498 pass |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
499 else: |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
500 raise |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
501 except ImportError: |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
502 pass |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
503 return 80 |
14908
e2b5605501df
util: move "default" makedir to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14273
diff
changeset
|
504 |
e2b5605501df
util: move "default" makedir to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14273
diff
changeset
|
505 def makedir(path, notindexed): |
e2b5605501df
util: move "default" makedir to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14273
diff
changeset
|
506 os.mkdir(path) |
14909
c627fe32c923
util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14908
diff
changeset
|
507 |
18143
242d2f4ec01c
util: fold ENOENT check into unlinkpath, controlled by new ignoremissing flag
Mads Kiilerich <madski@unity3d.com>
parents:
18097
diff
changeset
|
508 def unlinkpath(f, ignoremissing=False): |
14909
c627fe32c923
util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14908
diff
changeset
|
509 """unlink and remove the directory if it is empty""" |
18143
242d2f4ec01c
util: fold ENOENT check into unlinkpath, controlled by new ignoremissing flag
Mads Kiilerich <madski@unity3d.com>
parents:
18097
diff
changeset
|
510 try: |
242d2f4ec01c
util: fold ENOENT check into unlinkpath, controlled by new ignoremissing flag
Mads Kiilerich <madski@unity3d.com>
parents:
18097
diff
changeset
|
511 os.unlink(f) |
25660
328739ea70c3
global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25658
diff
changeset
|
512 except OSError as e: |
18143
242d2f4ec01c
util: fold ENOENT check into unlinkpath, controlled by new ignoremissing flag
Mads Kiilerich <madski@unity3d.com>
parents:
18097
diff
changeset
|
513 if not (ignoremissing and e.errno == errno.ENOENT): |
242d2f4ec01c
util: fold ENOENT check into unlinkpath, controlled by new ignoremissing flag
Mads Kiilerich <madski@unity3d.com>
parents:
18097
diff
changeset
|
514 raise |
14909
c627fe32c923
util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14908
diff
changeset
|
515 # try removing directories that might now be empty |
c627fe32c923
util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14908
diff
changeset
|
516 try: |
c627fe32c923
util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14908
diff
changeset
|
517 os.removedirs(os.path.dirname(f)) |
c627fe32c923
util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14908
diff
changeset
|
518 except OSError: |
c627fe32c923
util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14908
diff
changeset
|
519 pass |
c627fe32c923
util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14908
diff
changeset
|
520 |
14910
570ea0259b0a
util: move "default" lookupreg to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14909
diff
changeset
|
521 def lookupreg(key, name=None, scope=None): |
570ea0259b0a
util: move "default" lookupreg to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14909
diff
changeset
|
522 return None |
14911
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
523 |
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
524 def hidewindow(): |
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
525 """Hide current shell window. |
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
526 |
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
527 Used to hide the window opened when starting asynchronous |
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
528 child process under Windows, unneeded on other systems. |
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
529 """ |
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
530 pass |
14926
4e7e63fc685a
util: eliminate wildcard imports
Adrian Buehlmann <adrian@cadifra.com>
parents:
14911
diff
changeset
|
531 |
14927
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
532 class cachestat(object): |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
533 def __init__(self, path): |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
534 self.stat = os.stat(path) |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
535 |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
536 def cacheable(self): |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
537 return bool(self.stat.st_ino) |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
538 |
15791
a814f8fcc65a
Use explicit integer division
Martin Geisler <mg@aragost.com>
parents:
15711
diff
changeset
|
539 __hash__ = object.__hash__ |
a814f8fcc65a
Use explicit integer division
Martin Geisler <mg@aragost.com>
parents:
15711
diff
changeset
|
540 |
14927
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
541 def __eq__(self, other): |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
542 try: |
18442
ecba9b0e7672
posix: don't compare atime when determining if a file has changed
Siddharth Agarwal <sid0@fb.com>
parents:
18288
diff
changeset
|
543 # Only dev, ino, size, mtime and atime are likely to change. Out |
ecba9b0e7672
posix: don't compare atime when determining if a file has changed
Siddharth Agarwal <sid0@fb.com>
parents:
18288
diff
changeset
|
544 # of these, we shouldn't compare atime but should compare the |
ecba9b0e7672
posix: don't compare atime when determining if a file has changed
Siddharth Agarwal <sid0@fb.com>
parents:
18288
diff
changeset
|
545 # rest. However, one of the other fields changing indicates |
ecba9b0e7672
posix: don't compare atime when determining if a file has changed
Siddharth Agarwal <sid0@fb.com>
parents:
18288
diff
changeset
|
546 # something fishy going on, so return False if anything but atime |
ecba9b0e7672
posix: don't compare atime when determining if a file has changed
Siddharth Agarwal <sid0@fb.com>
parents:
18288
diff
changeset
|
547 # changes. |
ecba9b0e7672
posix: don't compare atime when determining if a file has changed
Siddharth Agarwal <sid0@fb.com>
parents:
18288
diff
changeset
|
548 return (self.stat.st_mode == other.stat.st_mode and |
ecba9b0e7672
posix: don't compare atime when determining if a file has changed
Siddharth Agarwal <sid0@fb.com>
parents:
18288
diff
changeset
|
549 self.stat.st_ino == other.stat.st_ino and |
ecba9b0e7672
posix: don't compare atime when determining if a file has changed
Siddharth Agarwal <sid0@fb.com>
parents:
18288
diff
changeset
|
550 self.stat.st_dev == other.stat.st_dev and |
ecba9b0e7672
posix: don't compare atime when determining if a file has changed
Siddharth Agarwal <sid0@fb.com>
parents:
18288
diff
changeset
|
551 self.stat.st_nlink == other.stat.st_nlink and |
ecba9b0e7672
posix: don't compare atime when determining if a file has changed
Siddharth Agarwal <sid0@fb.com>
parents:
18288
diff
changeset
|
552 self.stat.st_uid == other.stat.st_uid and |
ecba9b0e7672
posix: don't compare atime when determining if a file has changed
Siddharth Agarwal <sid0@fb.com>
parents:
18288
diff
changeset
|
553 self.stat.st_gid == other.stat.st_gid and |
ecba9b0e7672
posix: don't compare atime when determining if a file has changed
Siddharth Agarwal <sid0@fb.com>
parents:
18288
diff
changeset
|
554 self.stat.st_size == other.stat.st_size and |
ecba9b0e7672
posix: don't compare atime when determining if a file has changed
Siddharth Agarwal <sid0@fb.com>
parents:
18288
diff
changeset
|
555 self.stat.st_mtime == other.stat.st_mtime and |
ecba9b0e7672
posix: don't compare atime when determining if a file has changed
Siddharth Agarwal <sid0@fb.com>
parents:
18288
diff
changeset
|
556 self.stat.st_ctime == other.stat.st_ctime) |
14927
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
557 except AttributeError: |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
558 return False |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
559 |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
560 def __ne__(self, other): |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
561 return not self == other |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
562 |
14926
4e7e63fc685a
util: eliminate wildcard imports
Adrian Buehlmann <adrian@cadifra.com>
parents:
14911
diff
changeset
|
563 def executablepath(): |
4e7e63fc685a
util: eliminate wildcard imports
Adrian Buehlmann <adrian@cadifra.com>
parents:
14911
diff
changeset
|
564 return None # available on Windows only |
18097
ae54cff742e2
posix: move server side of unix domain sockets out of inotify
Bryan O'Sullivan <bryano@fb.com>
parents:
18017
diff
changeset
|
565 |
ae54cff742e2
posix: move server side of unix domain sockets out of inotify
Bryan O'Sullivan <bryano@fb.com>
parents:
18017
diff
changeset
|
566 class unixdomainserver(socket.socket): |
ae54cff742e2
posix: move server side of unix domain sockets out of inotify
Bryan O'Sullivan <bryano@fb.com>
parents:
18017
diff
changeset
|
567 def __init__(self, join, subsystem): |
ae54cff742e2
posix: move server side of unix domain sockets out of inotify
Bryan O'Sullivan <bryano@fb.com>
parents:
18017
diff
changeset
|
568 '''Create a unix domain socket with the given prefix.''' |
ae54cff742e2
posix: move server side of unix domain sockets out of inotify
Bryan O'Sullivan <bryano@fb.com>
parents:
18017
diff
changeset
|
569 super(unixdomainserver, self).__init__(socket.AF_UNIX) |
ae54cff742e2
posix: move server side of unix domain sockets out of inotify
Bryan O'Sullivan <bryano@fb.com>
parents:
18017
diff
changeset
|
570 sockname = subsystem + '.sock' |
ae54cff742e2
posix: move server side of unix domain sockets out of inotify
Bryan O'Sullivan <bryano@fb.com>
parents:
18017
diff
changeset
|
571 self.realpath = self.path = join(sockname) |
ae54cff742e2
posix: move server side of unix domain sockets out of inotify
Bryan O'Sullivan <bryano@fb.com>
parents:
18017
diff
changeset
|
572 if os.path.islink(self.path): |
ae54cff742e2
posix: move server side of unix domain sockets out of inotify
Bryan O'Sullivan <bryano@fb.com>
parents:
18017
diff
changeset
|
573 if os.path.exists(self.path): |
ae54cff742e2
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574 self.realpath = os.readlink(self.path) |
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575 else: |
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576 os.unlink(self.path) |
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577 try: |
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578 self.bind(self.realpath) |
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579 except socket.error as err: |
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580 if err.args[0] == 'AF_UNIX path too long': |
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581 tmpdir = tempfile.mkdtemp(prefix='hg-%s-' % subsystem) |
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582 self.realpath = os.path.join(tmpdir, sockname) |
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583 try: |
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584 self.bind(self.realpath) |
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585 os.symlink(self.realpath, self.path) |
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586 except (OSError, socket.error): |
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587 self.cleanup() |
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588 raise |
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589 else: |
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590 raise |
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591 self.listen(5) |
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592 |
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593 def cleanup(self): |
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594 def okayifmissing(f, path): |
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595 try: |
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596 f(path) |
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597 except OSError as err: |
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598 if err.errno != errno.ENOENT: |
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599 raise |
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600 |
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601 okayifmissing(os.unlink, self.path) |
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602 if self.realpath != self.path: |
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603 okayifmissing(os.unlink, self.realpath) |
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604 okayifmissing(os.rmdir, os.path.dirname(self.realpath)) |
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605 |
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606 def statislink(st): |
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607 '''check whether a stat result is a symlink''' |
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608 return st and stat.S_ISLNK(st.st_mode) |
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609 |
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610 def statisexec(st): |
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611 '''check whether a stat result is an executable file''' |
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612 return st and (st.st_mode & 0o100 != 0) |
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613 |
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614 def poll(fds): |
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615 """block until something happens on any file descriptor |
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616 |
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617 This is a generic helper that will check for any activity |
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618 (read, write. exception) and return the list of touched files. |
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619 |
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620 In unsupported cases, it will raise a NotImplementedError""" |
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621 try: |
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622 res = select.select(fds, fds, fds) |
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623 except ValueError: # out of range file descriptor |
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624 raise NotImplementedError() |
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625 return sorted(list(set(sum(res, [])))) |
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626 |
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627 def readpipe(pipe): |
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628 """Read all available data from a pipe.""" |
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629 # We can't fstat() a pipe because Linux will always report 0. |
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630 # So, we set the pipe to non-blocking mode and read everything |
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631 # that's available. |
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632 flags = fcntl.fcntl(pipe, fcntl.F_GETFL) |
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633 flags |= os.O_NONBLOCK |
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634 oldflags = fcntl.fcntl(pipe, fcntl.F_SETFL, flags) |
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635 |
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636 try: |
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637 chunks = [] |
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638 while True: |
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639 try: |
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640 s = pipe.read() |
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641 if not s: |
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642 break |
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643 chunks.append(s) |
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644 except IOError: |
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645 break |
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646 |
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647 return ''.join(chunks) |
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648 finally: |
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649 fcntl.fcntl(pipe, fcntl.F_SETFL, oldflags) |