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import os
def scm_find_files(path, scm_files, scm_dirs):
""" setuptools compatible file finder that follows symlinks
- path: the root directory from which to search
- scm_files: set of scm controlled files
- scm_files: set of scm controlled directories
scm_files and scm_dirs must be absolute with symlinks resolved (realpath),
with normalized case (normcase)
Spec here: http://setuptools.readthedocs.io/en/latest/setuptools.html#\
adding-support-for-revision-control-systems
"""
realpath = os.path.normcase(os.path.realpath(path))
seen = set()
res = []
for dirpath, dirnames, filenames in os.walk(realpath, followlinks=True):
# dirpath with symlinks resolved
realdirpath = os.path.normcase(os.path.realpath(dirpath))
if realdirpath not in scm_dirs or realdirpath in seen:
dirnames[:] = []
continue
for filename in filenames:
# dirpath + filename with symlinks preserved
fullfilename = os.path.join(dirpath, filename)
if os.path.normcase(os.path.realpath(fullfilename)) in scm_files:
res.append(
os.path.join(path, os.path.relpath(fullfilename, path)))
seen.add(realdirpath)
return res
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