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ZG dd„ deƒZ	g ddfdd„Z
g ddfdd„Zg ddfdd„ZedkrbddlZddlZe e ¡ j¡ dS dS )a  
This module implements the algorithm for converting between a "user name" -
something that a user can choose arbitrarily inside a font editor - and a file
name suitable for use in a wide range of operating systems and filesystems.

The `UFO 3 specification <http://unifiedfontobject.org/versions/ufo3/conventions/>`_
provides an example of an algorithm for such conversion, which avoids illegal
characters, reserved file names, ambiguity between upper- and lower-case
characters, and clashes with existing files.

This code was originally copied from
`ufoLib <https://github.com/unified-font-object/ufoLib/blob/8747da7/Lib/ufoLib/filenames.py>`_
by Tal Leming and is copyright (c) 2005-2016, The RoboFab Developers:

-	Erik van Blokland
-	Tal Leming
-	Just van Rossum
z\" * + / : < > ? [ \ ] | \0ú c                 C   s   g | ]}t |ƒ‘qS © )Úchr)Ú.0Úir   r   ú:/usr/lib/python3/dist-packages/fontTools/misc/filenames.pyÚ
<listcomp>   s    r   é   é    é   z!CON PRN AUX CLOCK$ NUL A:-Z: COM1zLPT1 LPT2 LPT3 COM2 COM3 COM4éÿ   c                   @   s   e Zd ZdS )ÚNameTranslationErrorN)Ú__name__Ú
__module__Ú__qualname__r   r   r   r   r      s    r   Ú c                 C   s  t | tƒs	tdƒ‚t|ƒ}t|ƒ}|s!| d dkr!d| dd…  } g }| D ]}|tv r.d}n
|| ¡ kr8|d7 }| |¡ q%d |¡} t| | }| d|… } g }	|  	d¡D ]}
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¡ qVd |	¡} ||  | }| ¡ |v r€t| |||ƒ}|S )aƒ  Converts from a user name to a file name.

	Takes care to avoid illegal characters, reserved file names, ambiguity between
	upper- and lower-case characters, and clashes with existing files.

	Args:
		userName (str): The input file name.
		existing: A case-insensitive list of all existing file names.
		prefix: Prefix to be prepended to the file name.
		suffix: Suffix to be appended to the file name.

	Returns:
		A suitable filename.

	Raises:
		NameTranslationError: If no suitable name could be generated.

	Examples::

		>>> userNameToFileName("a") == "a"
		True
		>>> userNameToFileName("A") == "A_"
		True
		>>> userNameToFileName("AE") == "A_E_"
		True
		>>> userNameToFileName("Ae") == "A_e"
		True
		>>> userNameToFileName("ae") == "ae"
		True
		>>> userNameToFileName("aE") == "aE_"
		True
		>>> userNameToFileName("a.alt") == "a.alt"
		True
		>>> userNameToFileName("A.alt") == "A_.alt"
		True
		>>> userNameToFileName("A.Alt") == "A_.A_lt"
		True
		>>> userNameToFileName("A.aLt") == "A_.aL_t"
		True
		>>> userNameToFileName(u"A.alT") == "A_.alT_"
		True
		>>> userNameToFileName("T_H") == "T__H_"
		True
		>>> userNameToFileName("T_h") == "T__h"
		True
		>>> userNameToFileName("t_h") == "t_h"
		True
		>>> userNameToFileName("F_F_I") == "F__F__I_"
		True
		>>> userNameToFileName("f_f_i") == "f_f_i"
		True
		>>> userNameToFileName("Aacute_V.swash") == "A_acute_V_.swash"
		True
		>>> userNameToFileName(".notdef") == "_notdef"
		True
		>>> userNameToFileName("con") == "_con"
		True
		>>> userNameToFileName("CON") == "C_O_N_"
		True
		>>> userNameToFileName("con.alt") == "_con.alt"
		True
		>>> userNameToFileName("alt.con") == "alt._con"
		True
	z(The value for userName must be a string.é    Ú.Ú_r   Nr   )Ú
isinstanceÚstrÚ
ValueErrorÚlenÚillegalCharactersÚlowerÚappendÚjoinÚmaxFileNameLengthÚsplitÚreservedFileNamesÚhandleClash1)ÚuserNameÚexistingÚprefixÚsuffixÚprefixLengthÚsuffixLengthZfilteredUserNameÚ	characterÚsliceLengthÚpartsÚpartÚfullNamer   r   r   ÚuserNameToFileName!   s4   
B

r+   c                 C   sÂ   t |ƒ}t |ƒ}|t | ƒ | d tkr(|t | ƒ | d }t| }| d|… } d}d}	|du rU| t|	ƒ d¡ }
||
 | }| ¡ |vrH|}n|	d7 }	|	dkrQn|du s0|du r_t|||ƒ}|S )a
  
	existing should be a case-insensitive list
	of all existing file names.

	>>> prefix = ("0" * 5) + "."
	>>> suffix = "." + ("0" * 10)
	>>> existing = ["a" * 5]

	>>> e = list(existing)
	>>> handleClash1(userName="A" * 5, existing=e,
	...		prefix=prefix, suffix=suffix) == (
	... 	'00000.AAAAA000000000000001.0000000000')
	True

	>>> e = list(existing)
	>>> e.append(prefix + "aaaaa" + "1".zfill(15) + suffix)
	>>> handleClash1(userName="A" * 5, existing=e,
	...		prefix=prefix, suffix=suffix) == (
	... 	'00000.AAAAA000000000000002.0000000000')
	True

	>>> e = list(existing)
	>>> e.append(prefix + "AAAAA" + "2".zfill(15) + suffix)
	>>> handleClash1(userName="A" * 5, existing=e,
	...		prefix=prefix, suffix=suffix) == (
	... 	'00000.AAAAA000000000000001.0000000000')
	True
	é   Nr   l   ÿŒIú5 )r   r   r   Úzfillr   ÚhandleClash2)r    r!   r"   r#   r$   r%   Úlr'   Ú	finalNameÚcounterÚnamer*   r   r   r   r   ˆ   s*   ÷r   c                 C   s€   t t|ƒ t|ƒ }td| ƒ}d}d}|du r6|t|ƒ | }| ¡ | vr)|}n|d7 }||kr2n|du s|du r>tdƒ‚|S )aˆ  
	existing should be a case-insensitive list
	of all existing file names.

	>>> prefix = ("0" * 5) + "."
	>>> suffix = "." + ("0" * 10)
	>>> existing = [prefix + str(i) + suffix for i in range(100)]

	>>> e = list(existing)
	>>> handleClash2(existing=e, prefix=prefix, suffix=suffix) == (
	... 	'00000.100.0000000000')
	True

	>>> e = list(existing)
	>>> e.remove(prefix + "1" + suffix)
	>>> handleClash2(existing=e, prefix=prefix, suffix=suffix) == (
	... 	'00000.1.0000000000')
	True

	>>> e = list(existing)
	>>> e.remove(prefix + "2" + suffix)
	>>> handleClash2(existing=e, prefix=prefix, suffix=suffix) == (
	... 	'00000.2.0000000000')
	True
	Ú9Nr   zNo unique name could be found.)r   r   Úintr   r   r   )r!   r"   r#   Z	maxLengthZmaxValuer0   r1   r*   r   r   r   r.   À   s    ø
r.   Ú__main__r   N)Ú__doc__r   r   Úranger   r   r   r   Ú	Exceptionr   r+   r   r.   r   ZdoctestÚsysÚexitZtestmodZfailedr   r   r   r   Ú<module>   s     
g8/ý