git-lfs-test/tasks.py

from invoke import task
from shutil import rmtree, unpack_archive
from os import mkdir
from os.path import isdir, basename
from glob import glob
from itertools import chain
from shlex import quote

PREP = "assets"
OUTPUT = "output"

MUSIC_GLOBS = ["*.flac", "*.mp3", "*.ogg", "*.opus", "*.aac"]

@task
def clean(c):
    dirs = [dir for dir in [PREP] if isdir(dir)]
    for dir in dirs:
        print(f"Removing {dir}")
        rmtree(dir)

@task
def unpack(c):
   zipfiles = glob("src/*.zip")
   if not isdir(PREP):
       mkdir(PREP)
   for zipfile in zipfiles:
       unpack_archive(zipfile, PREP)

@task(unpack)
def probe(c):
    if not isdir(OUTPUT):
        mkdir(OUTPUT)
    music_list = list(chain.from_iterable([glob(f"{PREP}/{pat}") for pat in MUSIC_GLOBS]))
    for m in music_list:
        cmd = f"ffprobe -v quiet -print_format json -show_format {quote(m)}"
        result = c.run(cmd)
        with open(f"{OUTPUT}/{basename(m)}.json", 'w') as f:
            f.write(result.stdout)