Mercurial > hg
annotate mercurial/posix.py @ 28375:97cb1aeaca78
graphmod: refactor state handling
Move ASCII graph state to a dictionary, to clarify what is being tracked. Move
the 'seen' state (tracking currently active edges) into this structure.
author | Martijn Pieters <mjpieters@fb.com> |
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date | Fri, 04 Mar 2016 14:44:32 +0000 |
parents | c7129ed280b8 |
children | 3239e2fdd2e2 |
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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)
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344 _needsshellquote = re.compile(r'[^a-zA-Z0-9._/+-]').search |
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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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368 """return a 2-tuple (desc, code) describing a subprocess status |
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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
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posix: do not use fstat in isowner
Martin Geisler <mg@lazybytes.net>
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8614
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374 def isowner(st): |
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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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rename util.find_exe to findexe
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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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|
385 |
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386 def findexisting(executable): |
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|
387 'Will return executable if existing file' |
15499
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posix: fix findexe() to check for file type and access
Marc-Antoine Ruel <maruel@google.com>
parents:
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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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|
391 |
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parents:
diff
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|
392 if os.sep in command: |
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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:
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|
397 |
7890
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|
398 for path in os.environ.get('PATH', '').split(os.pathsep): |
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|
399 executable = findexisting(os.path.join(path, command)) |
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|
400 if executable is not None: |
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parents:
15488
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|
401 return executable |
7890
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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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diff
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|
405 pass |
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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:
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|
409 def statfiles(files): |
18017
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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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changeset
|
411 exist or has a type we don't care about.''' |
7890
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parents:
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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
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Bryan O'Sullivan <bryano@fb.com>
parents:
17560
diff
changeset
|
417 if getkind(st.st_mode) not in _wantedkinds: |
74912fe3d718
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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
changeset
|
419 except OSError as err: |
7890
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parents:
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|
420 if err.errno not in (errno.ENOENT, errno.ENOTDIR): |
e710f0f592b2
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parents:
diff
changeset
|
421 raise |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
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|
422 st = None |
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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): |
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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
changeset
|
437 return pwd.getpwuid(uid)[0] |
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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): |
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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
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|
447 gid = os.getgid() |
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
448 try: |
e710f0f592b2
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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, [])))) |
c2ec81891502
util: add a simple poll utility
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24692
diff
changeset
|
577 |
22245
234e4c24b980
platform: implement readpipe()
Gregory Szorc <gregory.szorc@gmail.com>
parents:
20202
diff
changeset
|
578 def readpipe(pipe): |
234e4c24b980
platform: implement readpipe()
Gregory Szorc <gregory.szorc@gmail.com>
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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. |
331cbf088c4c
posix: implement readpipe using non-blocking I/O (issue4336)
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581 # So, we set the pipe to non-blocking mode and read everything |
331cbf088c4c
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582 # that's available. |
331cbf088c4c
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583 flags = fcntl.fcntl(pipe, fcntl.F_GETFL) |
331cbf088c4c
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584 flags |= os.O_NONBLOCK |
331cbf088c4c
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585 oldflags = fcntl.fcntl(pipe, fcntl.F_SETFL, flags) |
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234e4c24b980
platform: implement readpipe()
Gregory Szorc <gregory.szorc@gmail.com>
parents:
20202
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586 |
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587 try: |
331cbf088c4c
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588 chunks = [] |
331cbf088c4c
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589 while True: |
331cbf088c4c
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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) |