devscripts/utils.py

   1 import argparse
   2 import functools
   3 import subprocess
   4
   5
   6 def read_file(fname):
   7     with open(fname, encoding='utf-8') as f:
   8         return f.read()
   9
  10
  11 def write_file(fname, content, mode='w'):
  12     with open(fname, mode, encoding='utf-8') as f:
  13         return f.write(content)
  14
  15
  16 def read_version(fname='yt_dlp/version.py'):
  17     """Get the version without importing the package"""
  18     exec(compile(read_file(fname), fname, 'exec'))
  19     return locals()['__version__']
  20
  21
  22 def get_filename_args(has_infile=False, default_outfile=None):
  23     parser = argparse.ArgumentParser()
  24     if has_infile:
  25         parser.add_argument('infile', help='Input file')
  26     kwargs = {'nargs': '?', 'default': default_outfile} if default_outfile else {}
  27     parser.add_argument('outfile', **kwargs, help='Output file')
  28
  29     opts = parser.parse_args()
  30     if has_infile:
  31         return opts.infile, opts.outfile
  32     return opts.outfile
  33
  34
  35 def compose_functions(*functions):
  36     return lambda x: functools.reduce(lambda y, f: f(y), functions, x)
  37
  38
  39 def run_process(*args, **kwargs):
  40     kwargs.setdefault('text', True)
  41     kwargs.setdefault('check', True)
  42     kwargs.setdefault('capture_output', True)
  43     if kwargs['text']:
  44         kwargs.setdefault('encoding', 'utf-8')
  45         kwargs.setdefault('errors', 'replace')
  46     return subprocess.run(args, **kwargs)