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"""Code unit (module) handling for Coverage."""
import os
from coverage.backward import unicode_class
from coverage.files import FileLocator
from coverage.plugin import FileReporter
class CodeUnit(FileReporter):
"""Code unit: a filename or module.
Instance attributes:
`name` is a human-readable name for this code unit.
`filename` is the os path from which we can read the source.
`relative` is a boolean.
"""
def __init__(self, morf, file_locator=None):
self.file_locator = file_locator or FileLocator()
if hasattr(morf, '__file__'):
f = morf.__file__
else:
f = morf
f = self._adjust_filename(f)
self.filename = self.file_locator.canonical_filename(f)
if hasattr(morf, '__name__'):
n = modname = morf.__name__
self.relative = True
else:
n = os.path.splitext(morf)[0]
rel = self.file_locator.relative_filename(n)
if os.path.isabs(n):
self.relative = (rel != n)
else:
self.relative = True
n = rel
modname = None
self.name = n
self.modname = modname
def _adjust_filename(self, f):
# TODO: This shouldn't be in the base class, right?
return f
def flat_rootname(self):
"""A base for a flat filename to correspond to this code unit.
Useful for writing files about the code where you want all the files in
the same directory, but need to differentiate same-named files from
different directories.
For example, the file a/b/c.py will return 'a_b_c'
"""
if self.modname:
return self.modname.replace('.', '_')
else:
root = os.path.splitdrive(self.name)[1]
return root.replace('\\', '_').replace('/', '_').replace('.', '_')
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