Mercurial > repos > shellac > guppy_basecaller

annotate env/lib/python3.7/site-packages/boltons/fileutils.py @ 0:26e78fe6e8c4 draft

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"planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
author shellac
date Sat, 02 May 2020 07:14:21 -0400
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1 # -*- coding: utf-8 -*-
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2 """Virtually every Python programmer has used Python for wrangling
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3 disk contents, and ``fileutils`` collects solutions to some of the
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4 most commonly-found gaps in the standard library.
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5 """
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6
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7 from __future__ import print_function
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8
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9 import os
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10 import re
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11 import sys
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12 import stat
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13 import errno
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14 import fnmatch
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15 from shutil import copy2, copystat, Error
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16
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17
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18 __all__ = ['mkdir_p', 'atomic_save', 'AtomicSaver', 'FilePerms',
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19 'iter_find_files', 'copytree']
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20
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21
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22 FULL_PERMS = 511 # 0777 that both Python 2 and 3 can digest
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23 RW_PERMS = 438
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24 _SINGLE_FULL_PERM = 7 # or 07 in Python 2
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25 try:
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26 basestring
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27 except NameError:
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28 unicode = str # Python 3 compat
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29 basestring = (str, bytes)
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30
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31
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32 def mkdir_p(path):
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33 """Creates a directory and any parent directories that may need to
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34 be created along the way, without raising errors for any existing
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35 directories. This function mimics the behavior of the ``mkdir -p``
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36 command available in Linux/BSD environments, but also works on
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37 Windows.
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38 """
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39 try:
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40 os.makedirs(path)
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41 except OSError as exc:
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42 if exc.errno == errno.EEXIST and os.path.isdir(path):
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43 return
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44 raise
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45 return
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46
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47
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48 class FilePerms(object):
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49 """The :class:`FilePerms` type is used to represent standard POSIX
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50 filesystem permissions:
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51
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52 * Read
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53 * Write
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54 * Execute
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55
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56 Across three classes of user:
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57
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58 * Owning (u)ser
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59 * Owner's (g)roup
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60 * Any (o)ther user
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61
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62 This class assists with computing new permissions, as well as
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63 working with numeric octal ``777``-style and ``rwx``-style
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64 permissions. Currently it only considers the bottom 9 permission
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65 bits; it does not support sticky bits or more advanced permission
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66 systems.
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67
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68 Args:
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69 user (str): A string in the 'rwx' format, omitting characters
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70 for which owning user's permissions are not provided.
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71 group (str): A string in the 'rwx' format, omitting characters
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72 for which owning group permissions are not provided.
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73 other (str): A string in the 'rwx' format, omitting characters
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74 for which owning other/world permissions are not provided.
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75
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76 There are many ways to use :class:`FilePerms`:
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77
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78 >>> FilePerms(user='rwx', group='xrw', other='wxr') # note character order
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79 FilePerms(user='rwx', group='rwx', other='rwx')
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80 >>> int(FilePerms('r', 'r', ''))
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81 288
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82 >>> oct(288)[-3:] # XXX Py3k
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83 '440'
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84
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85 See also the :meth:`FilePerms.from_int` and
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86 :meth:`FilePerms.from_path` classmethods for useful alternative
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87 ways to construct :class:`FilePerms` objects.
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88 """
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89 # TODO: consider more than the lower 9 bits
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90 class _FilePermProperty(object):
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91 _perm_chars = 'rwx'
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92 _perm_set = frozenset('rwx')
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93 _perm_val = {'r': 4, 'w': 2, 'x': 1} # for sorting
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94
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95 def __init__(self, attribute, offset):
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96 self.attribute = attribute
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97 self.offset = offset
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98
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99 def __get__(self, fp_obj, type_=None):
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100 if fp_obj is None:
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101 return self
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102 return getattr(fp_obj, self.attribute)
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103
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104 def __set__(self, fp_obj, value):
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105 cur = getattr(fp_obj, self.attribute)
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106 if cur == value:
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107 return
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108 try:
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109 invalid_chars = set(str(value)) - self._perm_set
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110 except TypeError:
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111 raise TypeError('expected string, not %r' % value)
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112 if invalid_chars:
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113 raise ValueError('got invalid chars %r in permission'
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114 ' specification %r, expected empty string'
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115 ' or one or more of %r'
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116 % (invalid_chars, value, self._perm_chars))
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117
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118 sort_key = lambda c: self._perm_val[c]
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119 new_value = ''.join(sorted(set(value),
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120 key=sort_key, reverse=True))
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121 setattr(fp_obj, self.attribute, new_value)
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122 self._update_integer(fp_obj, new_value)
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123
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124 def _update_integer(self, fp_obj, value):
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125 mode = 0
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126 key = 'xwr'
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127 for symbol in value:
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128 bit = 2 ** key.index(symbol)
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129 mode |= (bit << (self.offset * 3))
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130 fp_obj._integer |= mode
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131
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132 def __init__(self, user='', group='', other=''):
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133 self._user, self._group, self._other = '', '', ''
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134 self._integer = 0
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135 self.user = user
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136 self.group = group
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137 self.other = other
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138
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139 @classmethod
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140 def from_int(cls, i):
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141 """Create a :class:`FilePerms` object from an integer.
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142
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143 >>> FilePerms.from_int(0o644) # note the leading zero-oh for octal
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144 FilePerms(user='rw', group='r', other='r')
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145 """
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146 i &= FULL_PERMS
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147 key = ('', 'x', 'w', 'xw', 'r', 'rx', 'rw', 'rwx')
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148 parts = []
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149 while i:
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150 parts.append(key[i & _SINGLE_FULL_PERM])
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151 i >>= 3
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152 parts.reverse()
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153 return cls(*parts)
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154
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155 @classmethod
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156 def from_path(cls, path):
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157 """Make a new :class:`FilePerms` object based on the permissions
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158 assigned to the file or directory at *path*.
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159
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160 Args:
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161 path (str): Filesystem path of the target file.
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162
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163 Here's an example that holds true on most systems:
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164
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165 >>> import tempfile
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166 >>> 'r' in FilePerms.from_path(tempfile.gettempdir()).user
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167 True
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168 """
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169 stat_res = os.stat(path)
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170 return cls.from_int(stat.S_IMODE(stat_res.st_mode))
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171
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172 def __int__(self):
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173 return self._integer
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174
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175 # Sphinx tip: attribute docstrings come after the attribute
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176 user = _FilePermProperty('_user', 2)
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177 "Stores the ``rwx``-formatted *user* permission."
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178 group = _FilePermProperty('_group', 1)
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179 "Stores the ``rwx``-formatted *group* permission."
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180 other = _FilePermProperty('_other', 0)
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181 "Stores the ``rwx``-formatted *other* permission."
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182
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183 def __repr__(self):
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184 cn = self.__class__.__name__
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185 return ('%s(user=%r, group=%r, other=%r)'
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186 % (cn, self.user, self.group, self.other))
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187
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188 ####
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189
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190
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191 _TEXT_OPENFLAGS = os.O_RDWR | os.O_CREAT | os.O_EXCL
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192 if hasattr(os, 'O_NOINHERIT'):
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193 _TEXT_OPENFLAGS |= os.O_NOINHERIT
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194 if hasattr(os, 'O_NOFOLLOW'):
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195 _TEXT_OPENFLAGS |= os.O_NOFOLLOW
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196 _BIN_OPENFLAGS = _TEXT_OPENFLAGS
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197 if hasattr(os, 'O_BINARY'):
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198 _BIN_OPENFLAGS |= os.O_BINARY
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199
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200
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201 try:
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202 import fcntl as fcntl
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203 except ImportError:
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204 def set_cloexec(fd):
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205 "Dummy set_cloexec for platforms without fcntl support"
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206 pass
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207 else:
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208 def set_cloexec(fd):
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209 """Does a best-effort :func:`fcntl.fcntl` call to set a fd to be
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210 automatically closed by any future child processes.
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211
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212 Implementation from the :mod:`tempfile` module.
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213 """
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214 try:
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215 flags = fcntl.fcntl(fd, fcntl.F_GETFD, 0)
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216 except IOError:
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217 pass
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218 else:
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219 # flags read successfully, modify
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220 flags |= fcntl.FD_CLOEXEC
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221 fcntl.fcntl(fd, fcntl.F_SETFD, flags)
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222 return
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223
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224
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225 def atomic_save(dest_path, **kwargs):
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226 """A convenient interface to the :class:`AtomicSaver` type. See the
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227 :class:`AtomicSaver` documentation for details.
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228 """
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229 return AtomicSaver(dest_path, **kwargs)
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230
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231
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232 def path_to_unicode(path):
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233 if isinstance(path, unicode):
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234 return path
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235 encoding = sys.getfilesystemencoding() or sys.getdefaultencoding()
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236 return path.decode(encoding)
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237
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238
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239 if os.name == 'nt':
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240 import ctypes
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parents:
diff changeset
241 from ctypes import c_wchar_p
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parents:
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242 from ctypes.wintypes import DWORD, LPVOID
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243
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244 _ReplaceFile = ctypes.windll.kernel32.ReplaceFile
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245 _ReplaceFile.argtypes = [c_wchar_p, c_wchar_p, c_wchar_p,
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246 DWORD, LPVOID, LPVOID]
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247
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248 def replace(src, dst):
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249 # argument names match stdlib docs, docstring below
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250 try:
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diff changeset
251 # ReplaceFile fails if the dest file does not exist, so
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252 # first try to rename it into position
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253 os.rename(src, dst)
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254 return
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255 except WindowsError as we:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
256 if we.errno == errno.EEXIST:
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257 pass # continue with the ReplaceFile logic below
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258 else:
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259 raise
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260
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261 src = path_to_unicode(src)
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262 dst = path_to_unicode(dst)
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263 res = _ReplaceFile(c_wchar_p(dst), c_wchar_p(src),
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264 None, 0, None, None)
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265 if not res:
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266 raise OSError('failed to replace %r with %r' % (dst, src))
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267 return
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268
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269 def atomic_rename(src, dst, overwrite=False):
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270 "Rename *src* to *dst*, replacing *dst* if *overwrite is True"
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271 if overwrite:
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272 replace(src, dst)
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273 else:
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274 os.rename(src, dst)
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275 return
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276 else:
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277 # wrapper func for cross compat + docs
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278 def replace(src, dst):
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279 # os.replace does the same thing on unix
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280 return os.rename(src, dst)
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281
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282 def atomic_rename(src, dst, overwrite=False):
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283 "Rename *src* to *dst*, replacing *dst* if *overwrite is True"
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284 if overwrite:
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285 os.rename(src, dst)
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286 else:
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287 os.link(src, dst)
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288 os.unlink(src)
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289 return
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290
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291
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292 _atomic_rename = atomic_rename # backwards compat
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293
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294 replace.__doc__ = """Similar to :func:`os.replace` in Python 3.3+,
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295 this function will atomically create or replace the file at path
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296 *dst* with the file at path *src*.
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297
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298 On Windows, this function uses the ReplaceFile API for maximum
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299 possible atomicity on a range of filesystems.
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300 """
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301
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302
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303 class AtomicSaver(object):
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304 """``AtomicSaver`` is a configurable `context manager`_ that provides
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305 a writable :class:`file` which will be moved into place as long as
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306 no exceptions are raised within the context manager's block. These
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307 "part files" are created in the same directory as the destination
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308 path to ensure atomic move operations (i.e., no cross-filesystem
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309 moves occur).
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310
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311 Args:
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312 dest_path (str): The path where the completed file will be
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313 written.
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314 overwrite (bool): Whether to overwrite the destination file if
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315 it exists at completion time. Defaults to ``True``.
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316 file_perms (int): Integer representation of file permissions
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317 for the newly-created file. Defaults are, when the
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318 destination path already exists, to copy the permissions
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319 from the previous file, or if the file did not exist, to
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320 respect the user's configured `umask`_, usually resulting
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321 in octal 0644 or 0664.
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322 part_file (str): Name of the temporary *part_file*. Defaults
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323 to *dest_path* + ``.part``. Note that this argument is
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324 just the filename, and not the full path of the part
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325 file. To guarantee atomic saves, part files are always
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326 created in the same directory as the destination path.
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327 overwrite_part (bool): Whether to overwrite the *part_file*,
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328 should it exist at setup time. Defaults to ``False``,
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329 which results in an :exc:`OSError` being raised on
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330 pre-existing part files. Be careful of setting this to
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331 ``True`` in situations when multiple threads or processes
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332 could be writing to the same part file.
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333 rm_part_on_exc (bool): Remove *part_file* on exception cases.
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334 Defaults to ``True``, but ``False`` can be useful for
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335 recovery in some cases. Note that resumption is not
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336 automatic and by default an :exc:`OSError` is raised if
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337 the *part_file* exists.
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338
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339 Practically, the AtomicSaver serves a few purposes:
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340
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341 * Avoiding overwriting an existing, valid file with a partially
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342 written one.
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343 * Providing a reasonable guarantee that a part file only has one
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344 writer at a time.
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345 * Optional recovery of partial data in failure cases.
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346
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347 .. _context manager: https://docs.python.org/2/reference/compound_stmts.html#with
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348 .. _umask: https://en.wikipedia.org/wiki/Umask
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349
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350 """
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351 _default_file_perms = RW_PERMS
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352
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353 # TODO: option to abort if target file modify date has changed since start?
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354 def __init__(self, dest_path, **kwargs):
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355 self.dest_path = dest_path
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356 self.overwrite = kwargs.pop('overwrite', True)
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357 self.file_perms = kwargs.pop('file_perms', None)
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358 self.overwrite_part = kwargs.pop('overwrite_part', False)
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359 self.part_filename = kwargs.pop('part_file', None)
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360 self.rm_part_on_exc = kwargs.pop('rm_part_on_exc', True)
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361 self.text_mode = kwargs.pop('text_mode', False) # for windows
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362 self.buffering = kwargs.pop('buffering', -1)
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363 if kwargs:
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364 raise TypeError('unexpected kwargs: %r' % (kwargs.keys(),))
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365
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366 self.dest_path = os.path.abspath(self.dest_path)
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367 self.dest_dir = os.path.dirname(self.dest_path)
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368 if not self.part_filename:
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369 self.part_path = dest_path + '.part'
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370 else:
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371 self.part_path = os.path.join(self.dest_dir, self.part_filename)
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372 self.mode = 'w+' if self.text_mode else 'w+b'
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373 self.open_flags = _TEXT_OPENFLAGS if self.text_mode else _BIN_OPENFLAGS
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374
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375 self.part_file = None
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376
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377 def _open_part_file(self):
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378 do_chmod = True
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379 file_perms = self.file_perms
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380 if file_perms is None:
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381 try:
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382 # try to copy from file being replaced
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383 stat_res = os.stat(self.dest_path)
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parents:
diff changeset
384 file_perms = stat.S_IMODE(stat_res.st_mode)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
385 except (OSError, IOError):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
386 # default if no destination file exists
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
387 file_perms = self._default_file_perms
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
388 do_chmod = False # respect the umask
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
389
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
390 fd = os.open(self.part_path, self.open_flags, file_perms)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
391 set_cloexec(fd)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
392 self.part_file = os.fdopen(fd, self.mode, self.buffering)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
393
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
394 # if default perms are overridden by the user or previous dest_path
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
395 # chmod away the effects of the umask
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
396 if do_chmod:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
397 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
398 os.chmod(self.part_path, file_perms)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
399 except (OSError, IOError):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
400 self.part_file.close()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
401 raise
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
402 return
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
403
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
404 def setup(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
405 """Called on context manager entry (the :keyword:`with` statement),
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
406 the ``setup()`` method creates the temporary file in the same
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
407 directory as the destination file.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
408
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
409 ``setup()`` tests for a writable directory with rename permissions
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
410 early, as the part file may not be written to immediately (not
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
411 using :func:`os.access` because of the potential issues of
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
412 effective vs. real privileges).
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
413
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
414 If the caller is not using the :class:`AtomicSaver` as a
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
415 context manager, this method should be called explicitly
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
416 before writing.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
417 """
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
418 if os.path.lexists(self.dest_path):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
419 if not self.overwrite:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
420 raise OSError(errno.EEXIST,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
421 'Overwrite disabled and file already exists',
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
422 self.dest_path)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
423 if self.overwrite_part and os.path.lexists(self.part_path):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
424 os.unlink(self.part_path)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
425 self._open_part_file()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
426 return
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
427
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
428 def __enter__(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
429 self.setup()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
430 return self.part_file
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
431
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
432 def __exit__(self, exc_type, exc_val, exc_tb):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
433 self.part_file.close()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
434 if exc_type:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
435 if self.rm_part_on_exc:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
436 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
437 os.unlink(self.part_path)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
438 except Exception:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
439 pass # avoid masking original error
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
440 return
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
441 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
442 atomic_rename(self.part_path, self.dest_path,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
443 overwrite=self.overwrite)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
444 except OSError:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
445 if self.rm_part_on_exc:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
446 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
447 os.unlink(self.part_path)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
448 except Exception:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
449 pass # avoid masking original error
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
450 raise # could not save destination file
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
451 return
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
452
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
453
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
454 def iter_find_files(directory, patterns, ignored=None, include_dirs=False):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
455 """Returns a generator that yields file paths under a *directory*,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
456 matching *patterns* using `glob`_ syntax (e.g., ``*.txt``). Also
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
457 supports *ignored* patterns.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
458
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
459 Args:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
460 directory (str): Path that serves as the root of the
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
461 search. Yielded paths will include this as a prefix.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
462 patterns (str or list): A single pattern or list of
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
463 glob-formatted patterns to find under *directory*.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
464 ignored (str or list): A single pattern or list of
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
465 glob-formatted patterns to ignore.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
466 include_dirs (bool): Whether to include directories that match
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
467 patterns, as well. Defaults to ``False``.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
468
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
469 For example, finding Python files in the current directory:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
470
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
471 >>> _CUR_DIR = os.path.dirname(os.path.abspath(__file__))
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
472 >>> filenames = sorted(iter_find_files(_CUR_DIR, '*.py'))
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
473 >>> os.path.basename(filenames[-1])
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
474 'urlutils.py'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
475
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
476 Or, Python files while ignoring emacs lockfiles:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
477
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
478 >>> filenames = iter_find_files(_CUR_DIR, '*.py', ignored='.#*')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
479
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
480 .. _glob: https://en.wikipedia.org/wiki/Glob_%28programming%29
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
481
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
482 """
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
483 if isinstance(patterns, basestring):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
484 patterns = [patterns]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
485 pats_re = re.compile('|'.join([fnmatch.translate(p) for p in patterns]))
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
486
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
487 if not ignored:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
488 ignored = []
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
489 elif isinstance(ignored, basestring):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
490 ignored = [ignored]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
491 ign_re = re.compile('|'.join([fnmatch.translate(p) for p in ignored]))
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
492 for root, dirs, files in os.walk(directory):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
493 if include_dirs:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
494 for basename in dirs:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
495 if pats_re.match(basename):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
496 if ignored and ign_re.match(basename):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
497 continue
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
498 filename = os.path.join(root, basename)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
499 yield filename
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
500
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
501 for basename in files:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
502 if pats_re.match(basename):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
503 if ignored and ign_re.match(basename):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
504 continue
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
505 filename = os.path.join(root, basename)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
506 yield filename
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
507 return
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
508
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
509
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
510 def copy_tree(src, dst, symlinks=False, ignore=None):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
511 """The ``copy_tree`` function is an exact copy of the built-in
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
512 :func:`shutil.copytree`, with one key difference: it will not
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
513 raise an exception if part of the tree already exists. It achieves
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
514 this by using :func:`mkdir_p`.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
515
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
516 Args:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
517 src (str): Path of the source directory to copy.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
518 dst (str): Destination path. Existing directories accepted.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
519 symlinks (bool): If ``True``, copy symlinks rather than their
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
520 contents.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
521 ignore (callable): A callable that takes a path and directory
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
522 listing, returning the files within the listing to be ignored.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
523
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
524 For more details, check out :func:`shutil.copytree` and
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
525 :func:`shutil.copy2`.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
526
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
527 """
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
528 names = os.listdir(src)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
529 if ignore is not None:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
530 ignored_names = ignore(src, names)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
531 else:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
532 ignored_names = set()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
533
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
534 mkdir_p(dst)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
535 errors = []
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
536 for name in names:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
537 if name in ignored_names:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
538 continue
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
539 srcname = os.path.join(src, name)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
540 dstname = os.path.join(dst, name)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
541 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
542 if symlinks and os.path.islink(srcname):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
543 linkto = os.readlink(srcname)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
544 os.symlink(linkto, dstname)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
545 elif os.path.isdir(srcname):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
546 copytree(srcname, dstname, symlinks, ignore)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
547 else:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
548 # Will raise a SpecialFileError for unsupported file types
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
549 copy2(srcname, dstname)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
550 # catch the Error from the recursive copytree so that we can
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
551 # continue with other files
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
552 except Error as e:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
553 errors.extend(e.args[0])
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
554 except EnvironmentError as why:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
555 errors.append((srcname, dstname, str(why)))
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
556 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
557 copystat(src, dst)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
558 except OSError as why:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
559 if WindowsError is not None and isinstance(why, WindowsError):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
560 # Copying file access times may fail on Windows
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
561 pass
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
562 else:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
563 errors.append((src, dst, str(why)))
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
564 if errors:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
565 raise Error(errors)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
566
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
567
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
568 copytree = copy_tree # alias for drop-in replacement of shutil
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
569
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
570
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
571 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
572 file
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
573 except NameError:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
574 file = object
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
575
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
576
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
577 # like open(os.devnull) but with even fewer side effects
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
578 class DummyFile(file):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
579 # TODO: raise ValueErrors on closed for all methods?
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
580 # TODO: enforce read/write
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
581 def __init__(self, path, mode='r', buffering=None):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
582 self.name = path
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
583 self.mode = mode
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
584 self.closed = False
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
585 self.errors = None
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
586 self.isatty = False
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
587 self.encoding = None
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
588 self.newlines = None
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
589 self.softspace = 0
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
590
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
591 def close(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
592 self.closed = True
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
593
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
594 def fileno(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
595 return -1
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
596
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
597 def flush(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
598 if self.closed:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
599 raise ValueError('I/O operation on a closed file')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
600 return
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
601
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
602 def next(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
603 raise StopIteration()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
604
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
605 def read(self, size=0):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
606 if self.closed:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
607 raise ValueError('I/O operation on a closed file')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
608 return ''
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
609
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
610 def readline(self, size=0):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
611 if self.closed:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
612 raise ValueError('I/O operation on a closed file')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
613 return ''
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
614
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
615 def readlines(self, size=0):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
616 if self.closed:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
617 raise ValueError('I/O operation on a closed file')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
618 return []
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
619
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
620 def seek(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
621 if self.closed:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
622 raise ValueError('I/O operation on a closed file')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
623 return
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
624
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
625 def tell(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
626 if self.closed:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
627 raise ValueError('I/O operation on a closed file')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
628 return 0
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
629
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
630 def truncate(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
631 if self.closed:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
632 raise ValueError('I/O operation on a closed file')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
633 return
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
634
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
635 def write(self, string):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
636 if self.closed:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
637 raise ValueError('I/O operation on a closed file')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
638 return
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
639
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
640 def writelines(self, list_of_strings):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
641 if self.closed:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
642 raise ValueError('I/O operation on a closed file')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
643 return
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
644
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
645 def __next__(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
646 raise StopIteration()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
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647
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
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648 def __enter__(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
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649 if self.closed:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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650 raise ValueError('I/O operation on a closed file')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
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651 return
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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652
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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653 def __exit__(self, exc_type, exc_val, exc_tb):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
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654 return
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
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655
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
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656
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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657 if __name__ == '__main__':
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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658 with atomic_save('/tmp/final.txt') as f:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
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659 f.write('rofl')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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660 f.write('\n')