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"""Formatter to extract the output files from a target."""
def format(target):
provider_map = providers(target)
if not provider_map:
return ""
outputs = dict()
# Try to resolve in order.
files_to_run = provider_map.get("FilesToRunProvider", None)
default_info = provider_map.get("DefaultInfo", None)
output_group_info = provider_map.get("OutputGroupInfo", None)
if files_to_run and files_to_run.executable:
outputs[files_to_run.executable.path] = True
elif default_info:
for x in default_info.files:
outputs[x.path] = True
elif output_group_info:
for entry in dir(output_group_info):
# Filter out all built-ins and anything that is not a depset.
if entry.startswith("_") or not hasattr(getattr(output_group_info, entry), "to_list"):
continue
for x in getattr(output_group_info, entry).to_list():
outputs[x.path] = True
# Return all found files.
return "\n".join(outputs.keys())
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