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# Copyright 2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
__all__ = ["bin_entry_point"]
import re
import sys
from portage.const import PORTAGE_BIN_PATH
from portage import os
def bin_entry_point():
"""
Adjust sys.argv[0] to point to a script in PORTAGE_BIN_PATH, and
then execute the script, in order to implement entry_points when
portage has been installed by pip.
"""
script_path = os.path.join(PORTAGE_BIN_PATH, os.path.basename(sys.argv[0]))
if os.access(script_path, os.X_OK):
with open(script_path, "rt") as f:
shebang = f.readline()
python_match = re.search(r"/python[\d\.]*\s+([^/]*)\s+$", shebang)
if python_match:
sys.argv = [
os.path.join(os.path.dirname(sys.argv[0]), "python"),
python_match.group(1),
script_path,
] + sys.argv[1:]
os.execvp(sys.argv[0], sys.argv)
sys.argv[0] = script_path
os.execvp(sys.argv[0], sys.argv)
else:
print("File not found:", script_path, file=sys.stderr)
return 127
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