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70 lines
2.2 KiB
Python
Executable File
70 lines
2.2 KiB
Python
Executable File
#!/usr/bin/env python3
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import os
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import sys
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import argparse
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import hashlib
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if False:
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# See https://zulip.readthedocs.io/en/latest/testing/mypy.html#mypy-in-production-scripts
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from typing import Iterable, List, MutableSet
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def expand_reqs_helper(fpath, visited):
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# type: (str, MutableSet[str]) -> List[str]
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if fpath in visited:
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return []
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else:
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visited.add(fpath)
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curr_dir = os.path.dirname(fpath)
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result = [] # type: List[str]
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for line in open(fpath):
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if line.startswith('#'):
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continue
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dep = line.split(" #", 1)[0].strip() # remove comments and strip whitespace
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if dep:
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if dep.startswith('-r'):
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child = os.path.join(curr_dir, dep[3:])
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result += expand_reqs_helper(child, visited)
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else:
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result.append(dep)
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return result
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def expand_reqs(fpath):
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# type: (str) -> List[str]
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"""
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Returns a sorted list of unique dependencies specified by the requirements file `fpath`.
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Removes comments from the output and recursively visits files specified inside `fpath`.
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`fpath` can be either an absolute path or a relative path.
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"""
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absfpath = os.path.abspath(fpath)
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output = expand_reqs_helper(absfpath, set())
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return sorted(set(output))
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def hash_deps(deps):
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# type: (Iterable[str]) -> str
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deps_str = "\n".join(deps) + "\n"
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return hashlib.sha1(deps_str.encode('utf-8')).hexdigest()
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def main():
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# type: () -> int
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description = ("Finds the SHA1 hash of list of dependencies in a requirements file"
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" after recursively visiting all files specified in it.")
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parser = argparse.ArgumentParser(description=description)
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parser.add_argument("fpath", metavar="FILE",
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help="Path to requirements file")
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parser.add_argument("--print", dest="print_reqs", action='store_true',
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help="Print all dependencies")
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args = parser.parse_args()
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deps = expand_reqs(args.fpath)
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hash = hash_deps(deps)
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print(hash)
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if args.print_reqs:
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for dep in deps:
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print(dep)
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return 0
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if __name__ == "__main__":
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sys.exit(main())
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