78 lines
2 KiB
Python
78 lines
2 KiB
Python
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import base64
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import glob
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import hashlib
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import json
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import math
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import os
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import pickle
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import time
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from typing import List
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def left_abbreviate(string, limit=120):
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return string if len(string) <= limit else f"...{string[:limit - 3]}"
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class ProgressPrinter:
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def __init__(self, verb, n) -> None:
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self.verb = verb
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self.n = n
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self.i = 0
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self.fmt_len = math.ceil(math.log10(n if n > 0 else 1))
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def step(self, msg):
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self.i += 1
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print(f"({self.i:>{self.fmt_len}d}/{self.n}) {self.verb} {left_abbreviate(msg):<120}", end="\r")
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def __enter__(self):
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return self
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def __exit__(self, exc_type, exc_value, exc_traceback):
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self.i -= 1
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if exc_value:
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self.step("error.")
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print()
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print(exc_value)
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return
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self.step("done.")
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print()
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def stable_hash(obj):
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return hashlib.md5(json.dumps(obj).encode("utf-8")).hexdigest()[:10]
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def cached(name, function, file_deps: List[str]):
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if not os.path.isdir("cache"):
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os.makedirs("cache", exist_ok=True)
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dep_time = 0.0
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for file in file_deps:
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m_time = os.path.getmtime(file) if os.path.exists(file) else 0.
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if m_time > dep_time:
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dep_time = m_time
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deps_hash = stable_hash(sorted(file_deps))
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pkl_filename = f"cache/{name}_{deps_hash}.pkl"
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pkl_time = os.path.getmtime(pkl_filename) if os.path.exists(pkl_filename) else 0.
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if pkl_time > dep_time:
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with open(pkl_filename, "rb") as f:
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print(f"[CACHE] Found up-to-date cache entry for {name}, loading.")
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return pickle.load(f)
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if os.path.exists(pkl_filename):
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print(f"[CACHE] Data dependencies for {name} changed, deleting cached version.")
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os.remove(pkl_filename)
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print(f"[CACHE] Creating cache entry for {name} (in {pkl_filename}).")
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obj = function()
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with open(pkl_filename, "wb") as f:
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pickle.dump(obj, f)
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return obj
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