Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/setuptools/_distutils/dir_util.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 """distutils.dir_util |
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2 |
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3 Utility functions for manipulating directories and directory trees.""" |
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4 |
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5 import os |
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6 import errno |
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7 from distutils.errors import DistutilsFileError, DistutilsInternalError |
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8 from distutils import log |
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9 |
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10 # cache for by mkpath() -- in addition to cheapening redundant calls, |
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11 # eliminates redundant "creating /foo/bar/baz" messages in dry-run mode |
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12 _path_created = {} |
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13 |
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14 # I don't use os.makedirs because a) it's new to Python 1.5.2, and |
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15 # b) it blows up if the directory already exists (I want to silently |
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16 # succeed in that case). |
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17 def mkpath(name, mode=0o777, verbose=1, dry_run=0): |
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18 """Create a directory and any missing ancestor directories. |
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19 |
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20 If the directory already exists (or if 'name' is the empty string, which |
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21 means the current directory, which of course exists), then do nothing. |
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22 Raise DistutilsFileError if unable to create some directory along the way |
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23 (eg. some sub-path exists, but is a file rather than a directory). |
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24 If 'verbose' is true, print a one-line summary of each mkdir to stdout. |
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25 Return the list of directories actually created. |
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26 """ |
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27 |
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28 global _path_created |
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29 |
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30 # Detect a common bug -- name is None |
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31 if not isinstance(name, str): |
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32 raise DistutilsInternalError( |
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33 "mkpath: 'name' must be a string (got %r)" % (name,)) |
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34 |
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35 # XXX what's the better way to handle verbosity? print as we create |
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36 # each directory in the path (the current behaviour), or only announce |
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37 # the creation of the whole path? (quite easy to do the latter since |
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38 # we're not using a recursive algorithm) |
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39 |
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40 name = os.path.normpath(name) |
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41 created_dirs = [] |
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42 if os.path.isdir(name) or name == '': |
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43 return created_dirs |
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44 if _path_created.get(os.path.abspath(name)): |
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45 return created_dirs |
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46 |
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47 (head, tail) = os.path.split(name) |
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48 tails = [tail] # stack of lone dirs to create |
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49 |
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50 while head and tail and not os.path.isdir(head): |
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51 (head, tail) = os.path.split(head) |
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52 tails.insert(0, tail) # push next higher dir onto stack |
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53 |
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54 # now 'head' contains the deepest directory that already exists |
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55 # (that is, the child of 'head' in 'name' is the highest directory |
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56 # that does *not* exist) |
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57 for d in tails: |
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58 #print "head = %s, d = %s: " % (head, d), |
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59 head = os.path.join(head, d) |
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60 abs_head = os.path.abspath(head) |
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61 |
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62 if _path_created.get(abs_head): |
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63 continue |
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64 |
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65 if verbose >= 1: |
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66 log.info("creating %s", head) |
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67 |
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68 if not dry_run: |
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69 try: |
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70 os.mkdir(head, mode) |
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71 except OSError as exc: |
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72 if not (exc.errno == errno.EEXIST and os.path.isdir(head)): |
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73 raise DistutilsFileError( |
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74 "could not create '%s': %s" % (head, exc.args[-1])) |
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75 created_dirs.append(head) |
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76 |
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77 _path_created[abs_head] = 1 |
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78 return created_dirs |
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79 |
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80 def create_tree(base_dir, files, mode=0o777, verbose=1, dry_run=0): |
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81 """Create all the empty directories under 'base_dir' needed to put 'files' |
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82 there. |
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83 |
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84 'base_dir' is just the name of a directory which doesn't necessarily |
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85 exist yet; 'files' is a list of filenames to be interpreted relative to |
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86 'base_dir'. 'base_dir' + the directory portion of every file in 'files' |
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87 will be created if it doesn't already exist. 'mode', 'verbose' and |
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88 'dry_run' flags are as for 'mkpath()'. |
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89 """ |
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90 # First get the list of directories to create |
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91 need_dir = set() |
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92 for file in files: |
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93 need_dir.add(os.path.join(base_dir, os.path.dirname(file))) |
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94 |
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95 # Now create them |
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96 for dir in sorted(need_dir): |
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97 mkpath(dir, mode, verbose=verbose, dry_run=dry_run) |
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98 |
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99 def copy_tree(src, dst, preserve_mode=1, preserve_times=1, |
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100 preserve_symlinks=0, update=0, verbose=1, dry_run=0): |
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101 """Copy an entire directory tree 'src' to a new location 'dst'. |
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102 |
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103 Both 'src' and 'dst' must be directory names. If 'src' is not a |
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104 directory, raise DistutilsFileError. If 'dst' does not exist, it is |
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105 created with 'mkpath()'. The end result of the copy is that every |
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106 file in 'src' is copied to 'dst', and directories under 'src' are |
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107 recursively copied to 'dst'. Return the list of files that were |
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108 copied or might have been copied, using their output name. The |
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109 return value is unaffected by 'update' or 'dry_run': it is simply |
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110 the list of all files under 'src', with the names changed to be |
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111 under 'dst'. |
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112 |
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113 'preserve_mode' and 'preserve_times' are the same as for |
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114 'copy_file'; note that they only apply to regular files, not to |
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115 directories. If 'preserve_symlinks' is true, symlinks will be |
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116 copied as symlinks (on platforms that support them!); otherwise |
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117 (the default), the destination of the symlink will be copied. |
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118 'update' and 'verbose' are the same as for 'copy_file'. |
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119 """ |
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120 from distutils.file_util import copy_file |
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121 |
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122 if not dry_run and not os.path.isdir(src): |
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123 raise DistutilsFileError( |
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124 "cannot copy tree '%s': not a directory" % src) |
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125 try: |
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126 names = os.listdir(src) |
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127 except OSError as e: |
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128 if dry_run: |
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129 names = [] |
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130 else: |
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131 raise DistutilsFileError( |
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132 "error listing files in '%s': %s" % (src, e.strerror)) |
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133 |
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134 if not dry_run: |
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135 mkpath(dst, verbose=verbose) |
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136 |
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137 outputs = [] |
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138 |
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139 for n in names: |
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140 src_name = os.path.join(src, n) |
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141 dst_name = os.path.join(dst, n) |
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142 |
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143 if n.startswith('.nfs'): |
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144 # skip NFS rename files |
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145 continue |
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146 |
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147 if preserve_symlinks and os.path.islink(src_name): |
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148 link_dest = os.readlink(src_name) |
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149 if verbose >= 1: |
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150 log.info("linking %s -> %s", dst_name, link_dest) |
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151 if not dry_run: |
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152 os.symlink(link_dest, dst_name) |
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153 outputs.append(dst_name) |
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154 |
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155 elif os.path.isdir(src_name): |
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156 outputs.extend( |
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157 copy_tree(src_name, dst_name, preserve_mode, |
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158 preserve_times, preserve_symlinks, update, |
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159 verbose=verbose, dry_run=dry_run)) |
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160 else: |
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161 copy_file(src_name, dst_name, preserve_mode, |
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162 preserve_times, update, verbose=verbose, |
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163 dry_run=dry_run) |
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164 outputs.append(dst_name) |
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165 |
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166 return outputs |
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167 |
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168 def _build_cmdtuple(path, cmdtuples): |
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169 """Helper for remove_tree().""" |
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170 for f in os.listdir(path): |
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171 real_f = os.path.join(path,f) |
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172 if os.path.isdir(real_f) and not os.path.islink(real_f): |
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173 _build_cmdtuple(real_f, cmdtuples) |
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174 else: |
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175 cmdtuples.append((os.remove, real_f)) |
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176 cmdtuples.append((os.rmdir, path)) |
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177 |
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178 def remove_tree(directory, verbose=1, dry_run=0): |
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179 """Recursively remove an entire directory tree. |
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180 |
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181 Any errors are ignored (apart from being reported to stdout if 'verbose' |
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182 is true). |
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183 """ |
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184 global _path_created |
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185 |
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186 if verbose >= 1: |
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187 log.info("removing '%s' (and everything under it)", directory) |
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188 if dry_run: |
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189 return |
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190 cmdtuples = [] |
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191 _build_cmdtuple(directory, cmdtuples) |
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192 for cmd in cmdtuples: |
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193 try: |
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194 cmd[0](cmd[1]) |
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195 # remove dir from cache if it's already there |
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196 abspath = os.path.abspath(cmd[1]) |
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197 if abspath in _path_created: |
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198 del _path_created[abspath] |
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199 except OSError as exc: |
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200 log.warn("error removing %s: %s", directory, exc) |
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201 |
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202 def ensure_relative(path): |
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203 """Take the full path 'path', and make it a relative path. |
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204 |
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205 This is useful to make 'path' the second argument to os.path.join(). |
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206 """ |
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207 drive, path = os.path.splitdrive(path) |
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208 if path[0:1] == os.sep: |
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209 path = drive + path[1:] |
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210 return path |