mirror of
https://github.com/rclone/rclone.git
synced 2024-11-25 18:04:55 +01:00
79 lines
2.2 KiB
Python
79 lines
2.2 KiB
Python
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#!/usr/bin/env python3
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"""
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Test the sizes in the rclone binary of each backend by compiling
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rclone with and without the backend and measuring the difference.
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Run with no arguments to test all backends or a supply a list of
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backends to test.
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"""
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all_backends = "backend/all/all.go"
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# compile command which is more or less like the production builds
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compile_command = ["go", "build", "--ldflags", "-s", "-trimpath"]
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import os
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import re
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import sys
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import subprocess
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match_backend = re.compile(r'"github.com/rclone/rclone/backend/(.*?)"')
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def read_backends():
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"""
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Reads the backends file, returning a list of backends and the original file
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"""
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with open(all_backends) as fd:
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orig_all = fd.read()
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# find the backends
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backends = []
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for line in orig_all.split("\n"):
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match = match_backend.search(line)
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if match:
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backends.append(match.group(1))
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return backends, orig_all
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def write_all(orig_all, backend):
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"""
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Write the all backends file without the backend given
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"""
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with open(all_backends, "w") as fd:
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for line in orig_all.split("\n"):
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match = re.search(r'"github.com/rclone/rclone/backend/(.*?)"', line)
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# Comment out line matching backend
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if match and match.group(1) == backend:
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line = "// " + line
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fd.write(line+"\n")
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def compile():
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"""
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Compile the binary, returning the size
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"""
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subprocess.check_call(compile_command)
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return os.stat("rclone").st_size
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def main():
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# change directory to the one with this script in
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os.chdir(os.path.dirname(os.path.abspath(__file__)))
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# change directory to the main rclone source
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os.chdir("..")
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to_test = sys.argv[1:]
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backends, orig_all = read_backends()
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if len(to_test) == 0:
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to_test = backends
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# Compile with all backends
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ref = compile()
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print(f"Total binary size {ref/1024/1024:.3f} MiB")
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print("Backend,Size MiB")
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for test_backend in to_test:
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write_all(orig_all, test_backend)
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new_size = compile()
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print(f"{test_backend},{(ref-new_size)/1024/1024:.3f}")
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# restore all file
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with open(all_backends, "w") as fd:
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fd.write(orig_all)
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if __name__ == "__main__":
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main()
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