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# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See LICENSE in the project root
# for license information.
import sys
if __name__ == "__main__":
# debugpy can also be invoked directly rather than via -m. In this case, the first
# entry on sys.path is the one added automatically by Python for the directory
# containing this file. This means that import debugpy will not work, since we need
# the parent directory of debugpy/ to be in sys.path, rather than debugpy/ itself.
#
# The other issue is that many other absolute imports will break, because they
# will be resolved relative to debugpy/ - e.g. `import debugger` will then try
# to import debugpy/debugger.py.
#
# To fix both, we need to replace the automatically added entry such that it points
# at parent directory of debugpy/ instead of debugpy/ itself, import debugpy with that
# in sys.path, and then remove the first entry entry altogether, so that it doesn't
# affect any further imports we might do. For example, suppose the user did:
#
# python /foo/bar/debugpy ...
#
# At the beginning of this script, sys.path will contain "/foo/bar/debugpy" as the
# first entry. What we want is to replace it with "/foo/bar', then import debugpy
# with that in effect, and then remove the replaced entry before any more
# code runs. The imported debugpy module will remain in sys.modules, and thus all
# future imports of it or its submodules will resolve accordingly.
if "debugpy" not in sys.modules:
# Do not use dirname() to walk up - this can be a relative path, e.g. ".".
sys.path[0] = sys.path[0] + "/../"
import debugpy # noqa
del sys.path[0]
from debugpy.server import cli
cli.main()
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