File size: 3,195 Bytes
39a78f4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 | #!/usr/bin/env python3
import argparse, csv, os, shutil, subprocess, sys, threading, time
from concurrent.futures import ThreadPoolExecutor
ROOT = os.environ.get("UNSC_CORPUS_ROOT", ".")
FLAGS = f"{ROOT}/documents/ocr_flags.tsv"
PAGE_JOBS = 3
_lock = threading.Lock()
counts = {"ok": 0, "fail": 0, "skip": 0, "n": 0}
faillog = f"{ROOT}/documents/ocr_failures.tsv"
def log(m):
with _lock:
print(f"[{time.strftime('%H:%M:%S')}] {m}", flush=True)
def archive_dir(pdf_path):
d = os.path.join(os.path.dirname(pdf_path), "..", "pdfs_ocr_originals")
d = os.path.normpath(d)
os.makedirs(d, exist_ok=True)
return d
def ocr_one(row, total):
path = row["path"]
name = os.path.basename(path)
arch = os.path.join(archive_dir(path), name)
with _lock:
counts["n"] += 1
n = counts["n"]
if os.path.exists(arch):
with _lock:
counts["skip"] += 1
return
if not os.path.exists(path):
with _lock:
counts["fail"] += 1
return
tmp = path + ".ocr.pdf"
cmd = ["ocrmypdf", "--force-ocr", "-l", "eng", "--output-type", "pdf",
"--optimize", "0", "--deskew", "--jobs", str(PAGE_JOBS), path, tmp]
try:
r = subprocess.run(cmd, capture_output=True, timeout=600)
if r.returncode == 0 and os.path.exists(tmp) and os.path.getsize(tmp) > 1000:
shutil.copy2(path, arch)
os.replace(tmp, path)
with _lock:
counts["ok"] += 1
else:
if os.path.exists(tmp):
os.remove(tmp)
with _lock:
counts["fail"] += 1
with open(faillog, "a") as fh:
err = r.stderr.decode("utf-8", "ignore")[-200:].replace("\n", " ")
fh.write(f"{path}\trc={r.returncode}\t{err}\n")
except Exception as e:
if os.path.exists(tmp):
os.remove(tmp)
with _lock:
counts["fail"] += 1
with open(faillog, "a") as fh:
fh.write(f"{path}\texception\t{e}\n")
with _lock:
if counts["n"] % 100 == 0:
log(f"{counts['n']}/{total} ocr'd={counts['ok']} fail={counts['fail']} skip={counts['skip']}")
def main():
ap = argparse.ArgumentParser()
ap.add_argument("--jobs", type=int, default=4, help="concurrent files")
ap.add_argument("--page-jobs", type=int, default=3, help="threads per file")
ap.add_argument("--limit", type=int, default=0)
args = ap.parse_args()
global PAGE_JOBS
PAGE_JOBS = args.page_jobs
flagged = [r for r in csv.DictReader(open(FLAGS), delimiter="\t")
if r["needs_ocr"] == "YES"]
flagged.sort(key=lambda r: float(r["cpp"]))
if args.limit:
flagged = flagged[:args.limit]
log(f"{len(flagged)} flagged PDFs to re-OCR (jobs={args.jobs})")
total = len(flagged)
with ThreadPoolExecutor(max_workers=args.jobs) as ex:
list(ex.map(lambda r: ocr_one(r, total), flagged))
log(f"DONE: ocr'd={counts['ok']} fail={counts['fail']} skip={counts['skip']} "
f"of {total}. Originals archived in each family's pdfs_ocr_originals/.")
if __name__ == "__main__":
main()
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