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    i                     @  sn   d dl mZ d dlmZ d dlmZmZmZmZ e	e
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f Z	 		ddddZedkr5d dlZe  dS dS )    )annotations)Optional)KerningPairKerningDictKerningGroupsIntFloatNpairr   kerningr   groupsr   fallbackr   glyphToFirstGroupOptional[StrDict]glyphToSecondGroupreturnc                   s*  | |v r||  S |du |du krt d|du rBi }i }| D ]!\}}|dr3|D ]}|||< q+q |drA|D ]}|||< q:q |dusHJ |dusNJ | \}	}
d }|	dr`|	}d}n||	}|	}|
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  fdd||fD }|D ]} | |v r||    S q|S )a	  Retrieve the kerning value (if any) between a pair of elements.

    The elments can be either individual glyphs (by name) or kerning
    groups (by name), or any combination of the two.

    Args:
      pair:
          A tuple, in logical order (first, second) with respect
          to the reading direction, to query the font for kerning
          information on. Each element in the tuple can be either
          a glyph name or a kerning group name.
      kerning:
          A dictionary of kerning pairs.
      groups:
          A set of kerning groups.
      fallback:
          The fallback value to return if no kern is found between
          the elements in ``pair``. Defaults to 0.
      glyphToFirstGroup:
          A dictionary mapping glyph names to the first-glyph kerning
          groups to which they belong. Defaults to ``None``.
      glyphToSecondGroup:
          A dictionary mapping glyph names to the second-glyph kerning
          groups to which they belong. Defaults to ``None``.

    Returns:
      The kerning value between the element pair. If no kerning for
      the pair is found, the fallback value is returned.

    Note: This function expects the ``kerning`` argument to be a flat
    dictionary of kerning pairs, not the nested structure used in a
    kerning.plist file.

    Examples::

      >>> groups = {
      ...     "public.kern1.O" : ["O", "D", "Q"],
      ...     "public.kern2.E" : ["E", "F"]
      ... }
      >>> kerning = {
      ...     ("public.kern1.O", "public.kern2.E") : -100,
      ...     ("public.kern1.O", "F") : -200,
      ...     ("D", "F") : -300
      ... }
      >>> lookupKerningValue(("D", "F"), kerning, groups)
      -300
      >>> lookupKerningValue(("O", "F"), kerning, groups)
      -200
      >>> lookupKerningValue(("O", "E"), kerning, groups)
      -100
      >>> lookupKerningValue(("O", "O"), kerning, groups)
      0
      >>> lookupKerningValue(("E", "E"), kerning, groups)
      0
      >>> lookupKerningValue(("E", "O"), kerning, groups)
      0
      >>> lookupKerningValue(("X", "X"), kerning, groups)
      0
      >>> lookupKerningValue(("public.kern1.O", "public.kern2.E"),
      ...     kerning, groups)
      -100
      >>> lookupKerningValue(("public.kern1.O", "F"), kerning, groups)
      -200
      >>> lookupKerningValue(("O", "public.kern2.E"), kerning, groups)
      -100
      >>> lookupKerningValue(("public.kern1.X", "public.kern2.X"), kerning, groups)
      0
    NzKMust provide both 'glyphToFirstGroup' and 'glyphToSecondGroup', or neither.zpublic.kern1.zpublic.kern2.c                   s2   g | ]} fD ]}|d ur|d ur||fqqS )N ).0abZsecondGlyphZsecondGroupr   g/var/www/html/eduruby.in/lip-sync/lip-sync-env/lib/python3.10/site-packages/fontTools/ufoLib/kerning.py
<listcomp>|   s    z&lookupKerningValue.<locals>.<listcomp>)
ValueErroritems
startswithget)r   r	   r
   r   r   r   groupZgroupMembersZglyphfirstsecondZ
firstGroupZ
firstGlyphpairsr   r   r   lookupKerningValue
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r   __main__)r   NN)r   r   r	   r   r
   r   r   r   r   r   r   r   r   r   )
__future__r   typingr   ZfontTools.annotationsr   r   r   r   dictstrZStrDictr   __name__doctesttestmodr   r   r   r   <module>   s     