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annotate planemo/lib/python3.7/site-packages/virtualenv/util/path/_sync.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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1 from __future__ import absolute_import, unicode_literals
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2
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3 import logging
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4 import os
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5 import shutil
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6 from stat import S_IWUSR
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7
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8 from six import PY2
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9
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10 from virtualenv.info import IS_CPYTHON, IS_WIN
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11 from virtualenv.util.six import ensure_text
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12
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13 if PY2 and IS_CPYTHON and IS_WIN: # CPython2 on Windows supports unicode paths if passed as unicode
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14
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15 def norm(src):
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16 return ensure_text(str(src))
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17
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18
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19 else:
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20 norm = str
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21
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22
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23 def ensure_dir(path):
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24 if not path.exists():
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25 logging.debug("create folder %s", ensure_text(str(path)))
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26 os.makedirs(norm(path))
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28
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29 def ensure_safe_to_do(src, dest):
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30 if src == dest:
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31 raise ValueError("source and destination is the same {}".format(src))
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32 if not dest.exists():
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33 return
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34 if dest.is_dir() and not dest.is_symlink():
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35 logging.debug("remove directory %s", dest)
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36 safe_delete(dest)
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37 else:
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38 logging.debug("remove file %s", dest)
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39 dest.unlink()
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40
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41
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42 def symlink(src, dest):
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43 ensure_safe_to_do(src, dest)
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44 logging.debug("symlink %s", _Debug(src, dest))
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45 dest.symlink_to(src, target_is_directory=src.is_dir())
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46
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47
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48 def copy(src, dest):
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49 ensure_safe_to_do(src, dest)
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50 is_dir = src.is_dir()
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51 method = copytree if is_dir else shutil.copy
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52 logging.debug("copy %s", _Debug(src, dest))
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53 method(norm(src), norm(dest))
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54
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55
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56 def copytree(src, dest):
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57 for root, _, files in os.walk(src):
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58 dest_dir = os.path.join(dest, os.path.relpath(root, src))
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59 if not os.path.exists(dest_dir):
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60 os.makedirs(dest_dir)
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61 for name in files:
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62 src_f = os.path.join(root, name)
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63 dest_f = os.path.join(dest_dir, name)
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64 shutil.copy(src_f, dest_f)
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66
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67 def safe_delete(dest):
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68 def onerror(func, path, exc_info):
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69 if not os.access(path, os.W_OK):
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70 os.chmod(path, S_IWUSR)
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71 func(path)
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72 else:
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73 raise
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74
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75 shutil.rmtree(ensure_text(str(dest)), ignore_errors=True, onerror=onerror)
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77
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78 class _Debug(object):
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79 def __init__(self, src, dest):
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80 self.src = src
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81 self.dest = dest
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82
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83 def __str__(self):
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84 return "{}{} to {}".format(
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85 "directory " if self.src.is_dir() else "", ensure_text(str(self.src)), ensure_text(str(self.dest)),
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86 )
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87
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88
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89 __all__ = (
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90 "ensure_dir",
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91 "symlink",
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92 "copy",
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93 "symlink",
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94 "copytree",
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95 "safe_delete",
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96 )