mirror of
https://github.com/kkroening/ffmpeg-python.git
synced 2025-04-05 04:22:51 +08:00
81 lines
2.2 KiB
Python
81 lines
2.2 KiB
Python
from __future__ import unicode_literals
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from builtins import str
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import hashlib
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import sys
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try:
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from collections.abc import Iterable
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except ImportError:
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from collections import Iterable
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def with_metaclass(meta, *bases):
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class metaclass(meta):
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__call__ = type.__call__
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__init__ = type.__init__
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def __new__(cls, name, this_bases, d):
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if this_bases is None:
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return type.__new__(cls, name, (), d)
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return meta(name, bases, d)
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return metaclass('temporary_class', None, {})
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def _recursive_repr(item):
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"""Hack around python `repr` to deterministically represent dictionaries.
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This is able to represent more things than json.dumps, since it does not require
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things to be JSON serializable (e.g. datetimes).
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"""
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if isinstance(item, list):
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result = '[{}]'.format(', '.join([_recursive_repr(x) for x in item]))
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elif isinstance(item, dict):
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kv_pairs = [
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'{}: {}'.format(_recursive_repr(k), _recursive_repr(item[k]))
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for k in sorted(item)
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]
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result = '{' + ', '.join(kv_pairs) + '}'
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else:
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result = repr(item)
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return result
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def get_hash(item):
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repr_ = _recursive_repr(item).encode('utf-8')
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return hashlib.md5(repr_).hexdigest()
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def get_hash_int(item):
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return int(get_hash(item), base=16)
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def escape_chars(text, chars):
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"""Helper function to escape uncomfortable characters."""
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text = str(text)
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chars = list(set(chars))
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if '\\' in chars:
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chars.remove('\\')
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chars.insert(0, '\\')
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for ch in chars:
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text = text.replace(ch, '\\' + ch)
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return text
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def convert_kwargs_to_cmd_line_args(kwargs):
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"""Helper function to build command line arguments out of dict."""
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args = []
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for k in sorted(kwargs.keys()):
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v = kwargs[k]
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if isinstance(v, Iterable) and not isinstance(v, str):
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for value in v:
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args.append('-{}'.format(k))
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if value is not None:
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args.append('{}'.format(value))
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continue
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args.append('-{}'.format(k))
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if v is not None:
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args.append('{}'.format(v))
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return args
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