insert a distfile into a "filename-hash BLAKE2B 8" distfile tree

add_distfile.py

#!/usr/bin/python3

import filecmp
import hashlib
import os
import shutil
import sys

args = sys.argv[1:]

if not args:
    # nothing to do
    sys.exit(0)

do_delete = False
if args[0] == '--delete':
    do_delete = True
    args.pop(0)

distdir = os.path.realpath(os.path.dirname(sys.argv[0]))

for i in args:
    if os.path.islink(i) or (not os.path.isfile(i)):
        print('{}: file not found'.format(i))
        continue

    rlp = os.path.realpath(i)
    bn = os.path.basename(rlp)
    hashpart = hashlib.blake2b(bn.encode('utf-8')).hexdigest()[:2]
    trg = os.path.realpath(os.path.join(distdir, hashpart, bn))
    del bn

    msg = ''
    if not hashpart:
        msg = '!!!!'
    elif trg == rlp:
        msg = 'nodo'
    elif os.path.isfile(trg):
        msg = '....'
        if filecmp.cmp(rlp, trg):
            os.remove(rlp)
        else:
            msg = '.dlt'
    else:
        try:
            if do_delete:
                shutil.move(rlp, trg)
            else:
                try:
                    os.link(rlp, trg)
                except:
                    shutil.copy2(rlp, trg)
            msg = ' OK '
        except:
            msg = 'FAIL'

    print('{} {} {}'.format(msg, hashpart, rlp))

layout.conf

[structure]
0=filename-hash BLAKE2B 8