Mercurial > hg
annotate mercurial/posix.py @ 29268:f200b58497f1
sslutil: reference appropriate config section in messaging
Error messages reference the config section defining the host
fingerprint. Now that we have multiple sections where this config
setting could live, we need to point the user at the appropriate
one.
We default to the new "hostsecurity" section. But we will still
refer them to the "hostfingerprint" section if a value is defined
there.
There are some corner cases where the messaging might be off. e.g.
they could define a SHA-1 fingerprint in both sections. IMO the
messaging needs a massive overhaul. I plan to do this as part
of future refactoring to security settings.
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Sat, 28 May 2016 12:58:46 -0700 |
parents | c7129ed280b8 |
children | 3239e2fdd2e2 |
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 stat |
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19 import sys |
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20 import tempfile |
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21 import unicodedata |
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22 |
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23 from .i18n import _ |
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24 from . import ( |
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25 encoding, |
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26 ) |
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27 |
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28 posixfile = open |
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29 normpath = os.path.normpath |
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30 samestat = os.path.samestat |
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31 try: |
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32 oslink = os.link |
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33 except AttributeError: |
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34 # Some platforms build Python without os.link on systems that are |
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35 # vaguely unix-like but don't have hardlink support. For those |
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36 # poor souls, just say we tried and that it failed so we fall back |
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37 # to copies. |
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38 def oslink(src, dst): |
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39 raise OSError(errno.EINVAL, |
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40 'hardlinks not supported: %s to %s' % (src, dst)) |
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41 unlink = os.unlink |
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42 rename = os.rename |
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43 removedirs = os.removedirs |
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44 expandglobs = False |
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45 |
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46 umask = os.umask(0) |
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47 os.umask(umask) |
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48 |
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49 def split(p): |
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50 '''Same as posixpath.split, but faster |
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51 |
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52 >>> import posixpath |
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53 >>> for f in ['/absolute/path/to/file', |
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54 ... 'relative/path/to/file', |
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55 ... 'file_alone', |
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56 ... 'path/to/directory/', |
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57 ... '/multiple/path//separators', |
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58 ... '/file_at_root', |
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59 ... '///multiple_leading_separators_at_root', |
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60 ... '']: |
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61 ... assert split(f) == posixpath.split(f), f |
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62 ''' |
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63 ht = p.rsplit('/', 1) |
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64 if len(ht) == 1: |
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65 return '', p |
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66 nh = ht[0].rstrip('/') |
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67 if nh: |
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68 return nh, ht[1] |
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69 return ht[0] + '/', ht[1] |
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70 |
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71 def openhardlinks(): |
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72 '''return true if it is safe to hold open file handles to hardlinks''' |
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73 return True |
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74 |
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75 def nlinks(name): |
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76 '''return number of hardlinks for the given file''' |
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77 return os.lstat(name).st_nlink |
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78 |
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79 def parsepatchoutput(output_line): |
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80 """parses the output produced by patch and returns the filename""" |
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81 pf = output_line[14:] |
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82 if os.sys.platform == 'OpenVMS': |
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83 if pf[0] == '`': |
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84 pf = pf[1:-1] # Remove the quotes |
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85 else: |
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86 if pf.startswith("'") and pf.endswith("'") and " " in pf: |
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87 pf = pf[1:-1] # Remove the quotes |
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88 return pf |
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89 |
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90 def sshargs(sshcmd, host, user, port): |
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91 '''Build argument list for ssh''' |
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92 args = user and ("%s@%s" % (user, host)) or host |
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93 return port and ("%s -p %s" % (args, port)) or args |
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94 |
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95 def isexec(f): |
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96 """check whether a file is executable""" |
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97 return (os.lstat(f).st_mode & 0o100 != 0) |
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98 |
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99 def setflags(f, l, x): |
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100 s = os.lstat(f).st_mode |
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101 if l: |
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102 if not stat.S_ISLNK(s): |
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103 # switch file to link |
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104 fp = open(f) |
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105 data = fp.read() |
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106 fp.close() |
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107 os.unlink(f) |
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108 try: |
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109 os.symlink(data, f) |
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110 except OSError: |
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111 # failed to make a link, rewrite file |
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112 fp = open(f, "w") |
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113 fp.write(data) |
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114 fp.close() |
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115 # no chmod needed at this point |
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116 return |
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117 if stat.S_ISLNK(s): |
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118 # switch link to file |
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119 data = os.readlink(f) |
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120 os.unlink(f) |
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121 fp = open(f, "w") |
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122 fp.write(data) |
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123 fp.close() |
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124 s = 0o666 & ~umask # avoid restatting for chmod |
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125 |
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126 sx = s & 0o100 |
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127 if x and not sx: |
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128 # Turn on +x for every +r bit when making a file executable |
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129 # and obey umask. |
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130 os.chmod(f, s | (s & 0o444) >> 2 & ~umask) |
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131 elif not x and sx: |
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132 # Turn off all +x bits |
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133 os.chmod(f, s & 0o666) |
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134 |
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135 def copymode(src, dst, mode=None): |
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136 '''Copy the file mode from the file at path src to dst. |
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137 If src doesn't exist, we're using mode instead. If mode is None, we're |
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138 using umask.''' |
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139 try: |
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140 st_mode = os.lstat(src).st_mode & 0o777 |
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141 except OSError as inst: |
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142 if inst.errno != errno.ENOENT: |
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143 raise |
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144 st_mode = mode |
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145 if st_mode is None: |
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146 st_mode = ~umask |
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147 st_mode &= 0o666 |
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148 os.chmod(dst, st_mode) |
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149 |
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150 def checkexec(path): |
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151 """ |
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152 Check whether the given path is on a filesystem with UNIX-like exec flags |
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153 |
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154 Requires a directory (like /foo/.hg) |
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155 """ |
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156 |
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157 # VFAT on some Linux versions can flip mode but it doesn't persist |
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158 # a FS remount. Frequently we can detect it if files are created |
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159 # with exec bit on. |
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160 |
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161 try: |
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162 EXECFLAGS = stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH |
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163 fh, fn = tempfile.mkstemp(dir=path, prefix='hg-checkexec-') |
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164 try: |
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165 os.close(fh) |
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166 m = os.stat(fn).st_mode & 0o777 |
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167 new_file_has_exec = m & EXECFLAGS |
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168 os.chmod(fn, m ^ EXECFLAGS) |
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169 exec_flags_cannot_flip = ((os.stat(fn).st_mode & 0o777) == m) |
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170 finally: |
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171 os.unlink(fn) |
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172 except (IOError, OSError): |
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173 # we don't care, the user probably won't be able to commit anyway |
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174 return False |
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175 return not (new_file_has_exec or exec_flags_cannot_flip) |
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176 |
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177 def checklink(path): |
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178 """check whether the given path is on a symlink-capable filesystem""" |
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179 # mktemp is not racy because symlink creation will fail if the |
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180 # file already exists |
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181 while True: |
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182 name = tempfile.mktemp(dir=path, prefix='hg-checklink-') |
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183 try: |
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184 fd = tempfile.NamedTemporaryFile(dir=path, prefix='hg-checklink-') |
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185 try: |
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186 os.symlink(os.path.basename(fd.name), name) |
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187 os.unlink(name) |
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188 return True |
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189 except OSError as inst: |
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190 # link creation might race, try again |
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191 if inst[0] == errno.EEXIST: |
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192 continue |
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193 raise |
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194 finally: |
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195 fd.close() |
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196 except AttributeError: |
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197 return False |
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198 except OSError as inst: |
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199 # sshfs might report failure while successfully creating the link |
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200 if inst[0] == errno.EIO and os.path.exists(name): |
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201 os.unlink(name) |
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202 return False |
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203 |
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204 def checkosfilename(path): |
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205 '''Check that the base-relative path is a valid filename on this platform. |
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206 Returns None if the path is ok, or a UI string describing the problem.''' |
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207 pass # on posix platforms, every path is ok |
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208 |
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209 def setbinary(fd): |
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210 pass |
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211 |
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212 def pconvert(path): |
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213 return path |
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214 |
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215 def localpath(path): |
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216 return path |
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217 |
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218 def samefile(fpath1, fpath2): |
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219 """Returns whether path1 and path2 refer to the same file. This is only |
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220 guaranteed to work for files, not directories.""" |
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221 return os.path.samefile(fpath1, fpath2) |
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222 |
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223 def samedevice(fpath1, fpath2): |
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224 """Returns whether fpath1 and fpath2 are on the same device. This is only |
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225 guaranteed to work for files, not directories.""" |
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226 st1 = os.lstat(fpath1) |
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227 st2 = os.lstat(fpath2) |
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228 return st1.st_dev == st2.st_dev |
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229 |
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230 # os.path.normcase is a no-op, which doesn't help us on non-native filesystems |
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231 def normcase(path): |
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232 return path.lower() |
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233 |
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234 # what normcase does to ASCII strings |
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235 normcasespec = encoding.normcasespecs.lower |
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236 # fallback normcase function for non-ASCII strings |
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237 normcasefallback = normcase |
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238 |
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239 if sys.platform == 'darwin': |
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240 |
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241 def normcase(path): |
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242 ''' |
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243 Normalize a filename for OS X-compatible comparison: |
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244 - escape-encode invalid characters |
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245 - decompose to NFD |
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246 - lowercase |
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247 - omit ignored characters [200c-200f, 202a-202e, 206a-206f,feff] |
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248 |
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249 >>> normcase('UPPER') |
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250 'upper' |
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251 >>> normcase('Caf\xc3\xa9') |
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252 'cafe\\xcc\\x81' |
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253 >>> normcase('\xc3\x89') |
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254 'e\\xcc\\x81' |
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255 >>> normcase('\xb8\xca\xc3\xca\xbe\xc8.JPG') # issue3918 |
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256 '%b8%ca%c3\\xca\\xbe%c8.jpg' |
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257 ''' |
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258 |
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259 try: |
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260 return encoding.asciilower(path) # exception for non-ASCII |
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261 except UnicodeDecodeError: |
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262 return normcasefallback(path) |
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263 |
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264 normcasespec = encoding.normcasespecs.lower |
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265 |
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266 def normcasefallback(path): |
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267 try: |
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268 u = path.decode('utf-8') |
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269 except UnicodeDecodeError: |
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270 # OS X percent-encodes any bytes that aren't valid utf-8 |
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271 s = '' |
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272 pos = 0 |
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273 l = len(path) |
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274 while pos < l: |
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275 try: |
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276 c = encoding.getutf8char(path, pos) |
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277 pos += len(c) |
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278 except ValueError: |
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279 c = '%%%02X' % ord(path[pos]) |
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280 pos += 1 |
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281 s += c |
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282 |
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283 u = s.decode('utf-8') |
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284 |
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285 # Decompose then lowercase (HFS+ technote specifies lower) |
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286 enc = unicodedata.normalize('NFD', u).lower().encode('utf-8') |
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287 # drop HFS+ ignored characters |
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288 return encoding.hfsignoreclean(enc) |
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289 |
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290 if sys.platform == 'cygwin': |
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291 # workaround for cygwin, in which mount point part of path is |
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292 # treated as case sensitive, even though underlying NTFS is case |
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293 # insensitive. |
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294 |
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295 # default mount points |
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296 cygwinmountpoints = sorted([ |
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297 "/usr/bin", |
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298 "/usr/lib", |
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299 "/cygdrive", |
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300 ], reverse=True) |
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301 |
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302 # use upper-ing as normcase as same as NTFS workaround |
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303 def normcase(path): |
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304 pathlen = len(path) |
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305 if (pathlen == 0) or (path[0] != os.sep): |
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306 # treat as relative |
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307 return encoding.upper(path) |
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308 |
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309 # to preserve case of mountpoint part |
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310 for mp in cygwinmountpoints: |
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311 if not path.startswith(mp): |
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312 continue |
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313 |
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314 mplen = len(mp) |
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315 if mplen == pathlen: # mount point itself |
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316 return mp |
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317 if path[mplen] == os.sep: |
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318 return mp + encoding.upper(path[mplen:]) |
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319 |
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320 return encoding.upper(path) |
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321 |
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322 normcasespec = encoding.normcasespecs.other |
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323 normcasefallback = normcase |
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324 |
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325 # Cygwin translates native ACLs to POSIX permissions, |
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326 # but these translations are not supported by native |
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327 # tools, so the exec bit tends to be set erroneously. |
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328 # Therefore, disable executable bit access on Cygwin. |
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329 def checkexec(path): |
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330 return False |
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331 |
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332 # Similarly, Cygwin's symlink emulation is likely to create |
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333 # problems when Mercurial is used from both Cygwin and native |
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334 # Windows, with other native tools, or on shared volumes |
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335 def checklink(path): |
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336 return False |
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337 |
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338 _needsshellquote = None |
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339 def shellquote(s): |
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340 if os.sys.platform == 'OpenVMS': |
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341 return '"%s"' % s |
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342 global _needsshellquote |
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343 if _needsshellquote is None: |
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posix: shellquote do not require quoting for "+" (issue4818)
timeless@mozdev.org
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344 _needsshellquote = re.compile(r'[^a-zA-Z0-9._/+-]').search |
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shellquote: fix missing quotes for empty string
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345 if s and not _needsshellquote(s): |
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346 # "s" shouldn't have to be quoted |
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347 return s |
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348 else: |
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349 return "'%s'" % s.replace("'", "'\\''") |
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350 |
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351 def quotecommand(cmd): |
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352 return cmd |
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353 |
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354 def popen(command, mode='r'): |
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355 return os.popen(command, mode) |
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356 |
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357 def testpid(pid): |
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358 '''return False if pid dead, True if running or not sure''' |
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359 if os.sys.platform == 'OpenVMS': |
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360 return True |
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361 try: |
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362 os.kill(pid, 0) |
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363 return True |
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364 except OSError as inst: |
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365 return inst.errno != errno.ESRCH |
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366 |
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rename explain_exit to explainexit
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367 def explainexit(code): |
9517
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util.system: Use subprocess instead of os.system
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368 """return a 2-tuple (desc, code) describing a subprocess status |
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util.system: Use subprocess instead of os.system
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369 (codes from kill are negative - not os.system/wait encoding)""" |
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370 if code >= 0: |
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371 return _("exited with status %d") % code, code |
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372 return _("killed by signal %d") % -code, -code |
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373 |
8657
3fa92c618624
posix: do not use fstat in isowner
Martin Geisler <mg@lazybytes.net>
parents:
8614
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374 def isowner(st): |
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posix: do not use fstat in isowner
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375 """Return True if the stat object st is from the current user.""" |
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376 return st.st_uid == os.getuid() |
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377 |
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4030630fb59c
rename util.find_exe to findexe
Adrian Buehlmann <adrian@cadifra.com>
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|
378 def findexe(command): |
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379 '''Find executable for command searching like which does. |
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380 If command is a basename then PATH is searched for command. |
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381 PATH isn't searched if command is an absolute or relative path. |
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|
382 If command isn't found None is returned.''' |
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383 if sys.platform == 'OpenVMS': |
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|
384 return command |
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parents:
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|
385 |
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386 def findexisting(executable): |
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|
387 '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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|
388 if os.path.isfile(executable) and os.access(executable, os.X_OK): |
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389 return executable |
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|
390 return None |
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parents:
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|
391 |
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parents:
diff
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|
392 if os.sep in command: |
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parents:
diff
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|
393 return findexisting(command) |
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parents:
diff
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|
394 |
16383
f5dd179bfa4a
plan9: initial support for plan 9 from bell labs
Steven Stallion <sstallion@gmail.com>
parents:
16241
diff
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|
395 if sys.platform == 'plan9': |
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parents:
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|
396 return findexisting(os.path.join('/bin', command)) |
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parents:
16241
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|
397 |
7890
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parents:
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|
398 for path in os.environ.get('PATH', '').split(os.pathsep): |
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parents:
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|
399 executable = findexisting(os.path.join(path, command)) |
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|
400 if executable is not None: |
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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|
401 return executable |
7890
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parents:
diff
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|
402 return None |
e710f0f592b2
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parents:
diff
changeset
|
403 |
14237
4d684d8210a1
rename util.set_signal_handler to setsignalhandler
Adrian Buehlmann <adrian@cadifra.com>
parents:
14235
diff
changeset
|
404 def setsignalhandler(): |
7890
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Matt Mackall <mpm@selenic.com>
parents:
diff
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|
405 pass |
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
406 |
18017
74912fe3d718
dirstate: move file type filtering to its source
Bryan O'Sullivan <bryano@fb.com>
parents:
17560
diff
changeset
|
407 _wantedkinds = set([stat.S_IFREG, stat.S_IFLNK]) |
74912fe3d718
dirstate: move file type filtering to its source
Bryan O'Sullivan <bryano@fb.com>
parents:
17560
diff
changeset
|
408 |
7890
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parents:
diff
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|
409 def statfiles(files): |
18017
74912fe3d718
dirstate: move file type filtering to its source
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parents:
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|
410 '''Stat each file in files. Yield each stat, or None if a file does not |
74912fe3d718
dirstate: move file type filtering to its source
Bryan O'Sullivan <bryano@fb.com>
parents:
17560
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|
411 exist or has a type we don't care about.''' |
7890
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parents:
diff
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|
412 lstat = os.lstat |
18017
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dirstate: move file type filtering to its source
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parents:
17560
diff
changeset
|
413 getkind = stat.S_IFMT |
7890
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
414 for nf in files: |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
415 try: |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
416 st = lstat(nf) |
18017
74912fe3d718
dirstate: move file type filtering to its source
Bryan O'Sullivan <bryano@fb.com>
parents:
17560
diff
changeset
|
417 if getkind(st.st_mode) not in _wantedkinds: |
74912fe3d718
dirstate: move file type filtering to its source
Bryan O'Sullivan <bryano@fb.com>
parents:
17560
diff
changeset
|
418 st = None |
25660
328739ea70c3
global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25658
diff
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|
419 except OSError as err: |
7890
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parents:
diff
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|
420 if err.errno not in (errno.ENOENT, errno.ENOTDIR): |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
421 raise |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
422 st = None |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
423 yield st |
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
424 |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
425 def getuser(): |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
426 '''return name of current user''' |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
427 return getpass.getuser() |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
428 |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
429 def username(uid=None): |
e710f0f592b2
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parents:
diff
changeset
|
430 """Return the name of the user with the given uid. |
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
431 |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
432 If uid is None, return the name of the current user.""" |
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
433 |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
434 if uid is None: |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
435 uid = os.getuid() |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
436 try: |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
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|
437 return pwd.getpwuid(uid)[0] |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
438 except KeyError: |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
439 return str(uid) |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
440 |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
441 def groupname(gid=None): |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
442 """Return the name of the group with the given gid. |
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
443 |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
444 If gid is None, return the name of the current group.""" |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
445 |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
446 if gid is None: |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
447 gid = os.getgid() |
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
448 try: |
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
449 return grp.getgrgid(gid)[0] |
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
450 except KeyError: |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
451 return str(gid) |
10237
2f7a38f336f4
serve: add and use portable spawnvp replacement
Patrick Mezard <pmezard@gmail.com>
parents:
10218
diff
changeset
|
452 |
11138
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
11011
diff
changeset
|
453 def groupmembers(name): |
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
11011
diff
changeset
|
454 """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
|
455 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
|
456 """ |
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
11011
diff
changeset
|
457 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
|
458 |
10237
2f7a38f336f4
serve: add and use portable spawnvp replacement
Patrick Mezard <pmezard@gmail.com>
parents:
10218
diff
changeset
|
459 def spawndetached(args): |
2f7a38f336f4
serve: add and use portable spawnvp replacement
Patrick Mezard <pmezard@gmail.com>
parents:
10218
diff
changeset
|
460 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
|
461 args[0], args) |
2f7a38f336f4
serve: add and use portable spawnvp replacement
Patrick Mezard <pmezard@gmail.com>
parents:
10218
diff
changeset
|
462 |
10239
8e4be44a676f
Find right hg command for detached process
Patrick Mezard <pmezard@gmail.com>
parents:
10237
diff
changeset
|
463 def gethgcmd(): |
8e4be44a676f
Find right hg command for detached process
Patrick Mezard <pmezard@gmail.com>
parents:
10237
diff
changeset
|
464 return sys.argv[:1] |
11010
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
465 |
12689
c52c629ce19e
termwidth: move to ui.ui from util
Augie Fackler <durin42@gmail.com>
parents:
11138
diff
changeset
|
466 def termwidth(): |
11010
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
467 try: |
25967
224a33452ed4
posix: use absolute_import
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25660
diff
changeset
|
468 import array |
224a33452ed4
posix: use absolute_import
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25660
diff
changeset
|
469 import termios |
11010
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
470 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
|
471 try: |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
472 try: |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
473 fd = dev.fileno() |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
474 except AttributeError: |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
475 continue |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
476 if not os.isatty(fd): |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
477 continue |
16726
7002bb17cc5e
posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents:
16383
diff
changeset
|
478 try: |
7002bb17cc5e
posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents:
16383
diff
changeset
|
479 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
|
480 width = array.array('h', arri)[1] |
7002bb17cc5e
posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents:
16383
diff
changeset
|
481 if width > 0: |
7002bb17cc5e
posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents:
16383
diff
changeset
|
482 return width |
7002bb17cc5e
posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents:
16383
diff
changeset
|
483 except AttributeError: |
7002bb17cc5e
posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents:
16383
diff
changeset
|
484 pass |
11010
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
485 except ValueError: |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
486 pass |
25660
328739ea70c3
global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25658
diff
changeset
|
487 except IOError as e: |
11010
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
488 if e[0] == errno.EINVAL: |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
489 pass |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
490 else: |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
491 raise |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
492 except ImportError: |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
493 pass |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
494 return 80 |
14908
e2b5605501df
util: move "default" makedir to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14273
diff
changeset
|
495 |
e2b5605501df
util: move "default" makedir to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14273
diff
changeset
|
496 def makedir(path, notindexed): |
e2b5605501df
util: move "default" makedir to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14273
diff
changeset
|
497 os.mkdir(path) |
14909
c627fe32c923
util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14908
diff
changeset
|
498 |
18143
242d2f4ec01c
util: fold ENOENT check into unlinkpath, controlled by new ignoremissing flag
Mads Kiilerich <madski@unity3d.com>
parents:
18097
diff
changeset
|
499 def unlinkpath(f, ignoremissing=False): |
14909
c627fe32c923
util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14908
diff
changeset
|
500 """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
|
501 try: |
242d2f4ec01c
util: fold ENOENT check into unlinkpath, controlled by new ignoremissing flag
Mads Kiilerich <madski@unity3d.com>
parents:
18097
diff
changeset
|
502 os.unlink(f) |
25660
328739ea70c3
global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25658
diff
changeset
|
503 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
|
504 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
|
505 raise |
14909
c627fe32c923
util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14908
diff
changeset
|
506 # 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
|
507 try: |
c627fe32c923
util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14908
diff
changeset
|
508 os.removedirs(os.path.dirname(f)) |
c627fe32c923
util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14908
diff
changeset
|
509 except OSError: |
c627fe32c923
util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14908
diff
changeset
|
510 pass |
c627fe32c923
util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14908
diff
changeset
|
511 |
14910
570ea0259b0a
util: move "default" lookupreg to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14909
diff
changeset
|
512 def lookupreg(key, name=None, scope=None): |
570ea0259b0a
util: move "default" lookupreg to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14909
diff
changeset
|
513 return None |
14911
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
514 |
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
515 def hidewindow(): |
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
516 """Hide current shell window. |
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
517 |
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
518 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
|
519 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
|
520 """ |
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
521 pass |
14926
4e7e63fc685a
util: eliminate wildcard imports
Adrian Buehlmann <adrian@cadifra.com>
parents:
14911
diff
changeset
|
522 |
14927
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
523 class cachestat(object): |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
524 def __init__(self, path): |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
525 self.stat = os.stat(path) |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
526 |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
527 def cacheable(self): |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
528 return bool(self.stat.st_ino) |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
529 |
15791
a814f8fcc65a
Use explicit integer division
Martin Geisler <mg@aragost.com>
parents:
15711
diff
changeset
|
530 __hash__ = object.__hash__ |
a814f8fcc65a
Use explicit integer division
Martin Geisler <mg@aragost.com>
parents:
15711
diff
changeset
|
531 |
14927
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
532 def __eq__(self, other): |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
533 try: |
18442
ecba9b0e7672
posix: don't compare atime when determining if a file has changed
Siddharth Agarwal <sid0@fb.com>
parents:
18288
diff
changeset
|
534 # 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
|
535 # 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
|
536 # 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
|
537 # 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
|
538 # changes. |
ecba9b0e7672
posix: don't compare atime when determining if a file has changed
Siddharth Agarwal <sid0@fb.com>
parents:
18288
diff
changeset
|
539 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
|
540 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
|
541 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
|
542 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
|
543 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
|
544 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
|
545 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
|
546 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
|
547 self.stat.st_ctime == other.stat.st_ctime) |
14927
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
548 except AttributeError: |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
549 return False |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
550 |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
551 def __ne__(self, other): |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
552 return not self == other |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
553 |
14926
4e7e63fc685a
util: eliminate wildcard imports
Adrian Buehlmann <adrian@cadifra.com>
parents:
14911
diff
changeset
|
554 def executablepath(): |
4e7e63fc685a
util: eliminate wildcard imports
Adrian Buehlmann <adrian@cadifra.com>
parents:
14911
diff
changeset
|
555 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
|
556 |
18868
cafa447a7d3b
util: add functions to check symlink/exec bits
Bryan O'Sullivan <bryano@fb.com>
parents:
18501
diff
changeset
|
557 def statislink(st): |
cafa447a7d3b
util: add functions to check symlink/exec bits
Bryan O'Sullivan <bryano@fb.com>
parents:
18501
diff
changeset
|
558 '''check whether a stat result is a symlink''' |
cafa447a7d3b
util: add functions to check symlink/exec bits
Bryan O'Sullivan <bryano@fb.com>
parents:
18501
diff
changeset
|
559 return st and stat.S_ISLNK(st.st_mode) |
cafa447a7d3b
util: add functions to check symlink/exec bits
Bryan O'Sullivan <bryano@fb.com>
parents:
18501
diff
changeset
|
560 |
cafa447a7d3b
util: add functions to check symlink/exec bits
Bryan O'Sullivan <bryano@fb.com>
parents:
18501
diff
changeset
|
561 def statisexec(st): |
cafa447a7d3b
util: add functions to check symlink/exec bits
Bryan O'Sullivan <bryano@fb.com>
parents:
18501
diff
changeset
|
562 '''check whether a stat result is an executable file''' |
25658
e93036747902
global: mass rewrite to use modern octal syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25420
diff
changeset
|
563 return st and (st.st_mode & 0o100 != 0) |
22245
234e4c24b980
platform: implement readpipe()
Gregory Szorc <gregory.szorc@gmail.com>
parents:
20202
diff
changeset
|
564 |
25420
c2ec81891502
util: add a simple poll utility
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24692
diff
changeset
|
565 def poll(fds): |
c2ec81891502
util: add a simple poll utility
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24692
diff
changeset
|
566 """block until something happens on any file descriptor |
c2ec81891502
util: add a simple poll utility
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24692
diff
changeset
|
567 |
c2ec81891502
util: add a simple poll utility
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24692
diff
changeset
|
568 This is a generic helper that will check for any activity |
c2ec81891502
util: add a simple poll utility
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24692
diff
changeset
|
569 (read, write. exception) and return the list of touched files. |
c2ec81891502
util: add a simple poll utility
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24692
diff
changeset
|
570 |
c2ec81891502
util: add a simple poll utility
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24692
diff
changeset
|
571 In unsupported cases, it will raise a NotImplementedError""" |
c2ec81891502
util: add a simple poll utility
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24692
diff
changeset
|
572 try: |
c2ec81891502
util: add a simple poll utility
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24692
diff
changeset
|
573 res = select.select(fds, fds, fds) |
c2ec81891502
util: add a simple poll utility
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24692
diff
changeset
|
574 except ValueError: # out of range file descriptor |
c2ec81891502
util: add a simple poll utility
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24692
diff
changeset
|
575 raise NotImplementedError() |
c2ec81891502
util: add a simple poll utility
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24692
diff
changeset
|
576 return sorted(list(set(sum(res, [])))) |
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577 |
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578 def readpipe(pipe): |
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579 """Read all available data from a pipe.""" |
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580 # We can't fstat() a pipe because Linux will always report 0. |
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581 # So, we set the pipe to non-blocking mode and read everything |
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582 # that's available. |
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583 flags = fcntl.fcntl(pipe, fcntl.F_GETFL) |
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584 flags |= os.O_NONBLOCK |
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585 oldflags = fcntl.fcntl(pipe, fcntl.F_SETFL, flags) |
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586 |
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587 try: |
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588 chunks = [] |
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589 while True: |
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590 try: |
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591 s = pipe.read() |
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592 if not s: |
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593 break |
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594 chunks.append(s) |
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595 except IOError: |
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596 break |
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597 |
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598 return ''.join(chunks) |
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599 finally: |
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600 fcntl.fcntl(pipe, fcntl.F_SETFL, oldflags) |