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yt-dlp/devscripts/utils.py

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import argparse
import functools
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import subprocess
def read_file(fname):
with open(fname, encoding='utf-8') as f:
return f.read()
def write_file(fname, content, mode='w'):
with open(fname, mode, encoding='utf-8') as f:
return f.write(content)
def read_version(fname='yt_dlp/version.py', varname='__version__'):
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"""Get the version without importing the package"""
items = {}
exec(compile(read_file(fname), fname, 'exec'), items)
return items[varname]
def get_filename_args(has_infile=False, default_outfile=None):
parser = argparse.ArgumentParser()
if has_infile:
parser.add_argument('infile', help='Input file')
kwargs = {'nargs': '?', 'default': default_outfile} if default_outfile else {}
parser.add_argument('outfile', **kwargs, help='Output file')
opts = parser.parse_args()
if has_infile:
return opts.infile, opts.outfile
return opts.outfile
def compose_functions(*functions):
return lambda x: functools.reduce(lambda y, f: f(y), functions, x)
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def run_process(*args, **kwargs):
kwargs.setdefault('text', True)
kwargs.setdefault('check', True)
kwargs.setdefault('capture_output', True)
if kwargs['text']:
kwargs.setdefault('encoding', 'utf-8')
kwargs.setdefault('errors', 'replace')
return subprocess.run(args, **kwargs)