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97 lines
2.3 KiB
Python
97 lines
2.3 KiB
Python
from __future__ import absolute_import, unicode_literals
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import logging
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import os
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import shutil
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from stat import S_IWUSR
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from six import PY2
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from virtualenv.info import IS_CPYTHON, IS_WIN
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from virtualenv.util.six import ensure_text
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if PY2 and IS_CPYTHON and IS_WIN: # CPython2 on Windows supports unicode paths if passed as unicode
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def norm(src):
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return ensure_text(str(src))
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else:
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norm = str
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def ensure_dir(path):
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if not path.exists():
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logging.debug("create folder %s", ensure_text(str(path)))
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os.makedirs(norm(path))
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def ensure_safe_to_do(src, dest):
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if src == dest:
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raise ValueError("source and destination is the same {}".format(src))
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if not dest.exists():
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return
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if dest.is_dir() and not dest.is_symlink():
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logging.debug("remove directory %s", dest)
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safe_delete(dest)
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else:
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logging.debug("remove file %s", dest)
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dest.unlink()
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def symlink(src, dest):
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ensure_safe_to_do(src, dest)
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logging.debug("symlink %s", _Debug(src, dest))
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dest.symlink_to(src, target_is_directory=src.is_dir())
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def copy(src, dest):
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ensure_safe_to_do(src, dest)
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is_dir = src.is_dir()
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method = copytree if is_dir else shutil.copy
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logging.debug("copy %s", _Debug(src, dest))
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method(norm(src), norm(dest))
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def copytree(src, dest):
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for root, _, files in os.walk(src):
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dest_dir = os.path.join(dest, os.path.relpath(root, src))
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if not os.path.exists(dest_dir):
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os.makedirs(dest_dir)
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for name in files:
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src_f = os.path.join(root, name)
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dest_f = os.path.join(dest_dir, name)
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shutil.copy(src_f, dest_f)
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def safe_delete(dest):
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def onerror(func, path, exc_info):
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if not os.access(path, os.W_OK):
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os.chmod(path, S_IWUSR)
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func(path)
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else:
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raise
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shutil.rmtree(ensure_text(str(dest)), ignore_errors=True, onerror=onerror)
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class _Debug(object):
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def __init__(self, src, dest):
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self.src = src
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self.dest = dest
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def __str__(self):
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return "{}{} to {}".format(
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"directory " if self.src.is_dir() else "", ensure_text(str(self.src)), ensure_text(str(self.dest)),
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)
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__all__ = (
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"ensure_dir",
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"symlink",
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"copy",
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"symlink",
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"copytree",
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"safe_delete",
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)
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