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# coding: utf-8
from __future__ import unicode_literals
import argparse
import functools
import os.path
import subprocess
import sys
dirn = os.path.dirname
sys.path.insert(0, dirn(dirn(os.path.abspath(__file__))))
from youtube_dl.compat import (
compat_kwargs,
compat_open as open,
)
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='youtube_dl/version.py'):
"""Get the version without importing the package"""
exec(compile(read_file(fname), fname, 'exec'))
return locals()['__version__']
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 {}
kwargs['help'] = 'Output file'
parser.add_argument('outfile', **compat_kwargs(kwargs))
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)
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')
kwargs = compat_kwargs(kwargs)
return subprocess.run(args, **kwargs)
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