Process Hungarian text

BASE_DIR = "/Users/joregan/Playing/maligna/maligna-ui/maligna-3.0.2-SNAPSHOT/hp-tuz"
FILE = f"{BASE_DIR}/konyv_4___harry_potter_es_a_tuz_serlege_www.5mp.eu_.txt"
OUTFILE = f"{BASE_DIR}/hp-hu.txt"

current = ""
final_punct = set(".!?…")
with open(FILE, "r") as f, open(OUTFILE, "w") as out_f:
    for line in f.readlines():
        sline = line.strip()
        if sline == "":
            continue
        if sline[-1] in final_punct:
            if current:
                out_f.write(f"{current} {sline}\n")
                current = ""
            else:
                out_f.write(f"{sline}\n")
        elif sline.endswith("fejezet"):
            if current:
                out_f.write(f"{current}\n")
                current = ""
            out_f.write(f"{sline}\n")
        else:
            if current:
                current += " " + sline
            else:
                current = sline