o
    a7                     @   s  d Z ddlmZ ddlmZmZmZ dZeeZdZ	de	 dZ
de
 d	Zde d
Zde dZee
ZeeZeeZeeZdZg dZg dZg dZdZdZdZdZdZdZdZdZdZdZdZ dZ!G dd de"Z#G dd dZ$e%dkrddl&Z&e$e&j'd Z(e)d*dd de(j+ de(j, de(j- de(j. d e(j/ d!e(j0 d"e(j1 d#e(j2 d$e(j3 d%e(j4 d&e(j5 d'e(j6 d(e(j7 d)e(j8 fD  e)e( dS dS )*u1  Module for reading TFM (TeX Font Metrics) files.

The TFM format is described in the TFtoPL WEB source code, whose typeset form
can be found on `CTAN <http://mirrors.ctan.org/info/knuth-pdf/texware/tftopl.pdf>`_.

	>>> from fontTools.tfmLib import TFM
	>>> tfm = TFM("Tests/tfmLib/data/cmr10.tfm")
	>>>
	>>> # Accessing an attribute gets you metadata.
	>>> tfm.checksum
	1274110073
	>>> tfm.designsize
	10.0
	>>> tfm.codingscheme
	'TeX text'
	>>> tfm.family
	'CMR'
	>>> tfm.seven_bit_safe_flag
	False
	>>> tfm.face
	234
	>>> tfm.extraheader
	{}
	>>> tfm.fontdimens
	{'SLANT': 0.0, 'SPACE': 0.33333396911621094, 'STRETCH': 0.16666698455810547, 'SHRINK': 0.11111164093017578, 'XHEIGHT': 0.4305553436279297, 'QUAD': 1.0000028610229492, 'EXTRASPACE': 0.11111164093017578}
	>>> # Accessing a character gets you its metrics.
	>>> # “width” is always available, other metrics are available only when
	>>> # applicable. All values are relative to “designsize”.
	>>> tfm.chars[ord("g")]
	{'width': 0.5000019073486328, 'height': 0.4305553436279297, 'depth': 0.1944446563720703, 'italic': 0.013888359069824219}
	>>> # Kerning and ligature can be accessed as well.
	>>> tfm.kerning[ord("c")]
	{104: -0.02777862548828125, 107: -0.02777862548828125}
	>>> tfm.ligatures[ord("f")]
	{105: ('LIG', 12), 102: ('LIG', 11), 108: ('LIG', 13)}
    )SimpleNamespace)calcsizeunpackunpack2a  
    >
    lf: h    # length of the entire file, in words
    lh: h    # length of the header data, in words
    bc: h    # smallest character code in the font
    ec: h    # largest character code in the font
    nw: h    # number of words in the width table
    nh: h    # number of words in the height table
    nd: h    # number of words in the depth table
    ni: h    # number of words in the italic correction table
    nl: h    # number of words in the ligature/kern table
    nk: h    # number of words in the kern table
    ne: h    # number of words in the extensible character table
    np: h    # number of font parameter words
z12.20Fz;
    >
    checksum:            L
    designsize:          
z
    z
    codingscheme:        40p
z
    family:              20p
zm
    seven_bit_safe_flag: ?
    ignored:             x
    ignored:             x
    face:                B
zI
    >
    skip_byte: B
    next_char: B
    op_byte: B
    remainder: B
)ZSLANTZSPACEZSTRETCHZSHRINKZXHEIGHTZQUADZ
EXTRASPACE)ZNUM1ZNUM2ZNUM3ZDENOM1ZDENOM2ZSUP1ZSUP2ZSUP3ZSUB1ZSUB2ZSUPDROPZSUBDROPZDELIM1ZDELIM2Z
AXISHEIGHT)ZDEFAULTRULETHICKNESSZBIGOPSPACING1ZBIGOPSPACING2ZBIGOPSPACING3ZBIGOPSPACING4ZBIGOPSPACING5            c                       s   e Zd Z fddZ  ZS )TFMExceptionc                    s   t  | d S N)super__init__)selfmessage	__class__ 2/usr/lib/python3/dist-packages/fontTools/tfmLib.pyr         zTFMException.__init__)__name__
__module____qualname__r   __classcell__r   r   r   r   r      s    r   c                   @   s$   e Zd Zdd Zdd Zdd ZdS )TFMc                 C   s   |  | d S r   )_read)r   filer   r   r   r      s   zTFM.__init__c                 C   s    d| j  d| j d| jddS )Nz	<TFM for z in z at gzpt>)familycodingscheme
designsize)r   r   r   r   __repr__   s   zTFM.__repr__c                    sl  t |dr
| nt|d}| W d    n1 sw   Y  | _ttk r0tdt tt	 j
dk rBtdtj
d k rOtdt D ]\}}|dk ratdqUjd	k rptd
j djjd ks}jdkrtdj dj djdksjdksjdksjdkrtdjdkrtdt dj
dj jj d  j j j j j j j j krtddj j   j d j j j j j 

j j  fddfddfdd}fddfdd fd!d"	fd#d$}fd%d&fd'd(}fd)d*}fd+d,}		fd-d.}
fd/d0}fd1d2}fd3d4}
fd5d6}fd7d8}dXfd9d:	ttdgt |  d;}jd }i | _|tkrtt|d  | d }| jd<k r| jd	 }| jd	 }d=|d>  d?|  d@|d>   | _tjtd  D ]}tdA|d<  dB|| jd }qn/|tkrtt|d  |  n|t krtt!|d  |  n|t"krtt#|d  |  t$| _%| j&' }|(dCr.t)| _%n	|(dDr7t*| _%i | _+tjD ]@}dE|d  }|dkrRt,| }n#| j%t)krd|dFkrdt-|dG  }n| j%t*kru|dHkrut.|dG  }|||| j+ q?i }d | _/d | _0jdkr||d}|j1dkr|j2| _/||jd }|j1dkrd| _0d|j3 |j4 }||| j0< i | _5tjjd D ]}|dkrxi  | j5|< }|||dI< |dkr|||dJ< |dkr|	||dK< 	|dkr|
||dL< ||}|t6krq|t7kr|||< q|t8kr+||dM< q|t9krxi  |dN< }tdD ]=}|||  }|d>ksN|dkrvdO}|dkrXdP}n|dkr`dQ}n|d	krgdR}||rr|||< q:|||< q:qi | _:i | _;t<| D ]\}}|||}|j1t=krd|j3 |j4 }|jk r2|||}|j1t=krnm|j3t>krd|j3t>  |j4 }||| j;?|i |j2< nP|j3}|dks|dGkr|dSkr|}n.dT}|d dkr|dU7 }|dV7 }|d	 dkr|dU7 }|d>kr|dW7 }|d8 }|d>ks||j4f| j:?|i |j2< |j1t=kr%n||j1d 7 }|jk sqd S )YNreadrbzToo short input filer   z0The file claims to have negative or zero length!   z(The file has fewer bytes than it claims!z'The subfile size: '{name}' is negative!r   zThe header length is only !r      zThe character code range z..z is illegal!z-Incomplete subfiles for character dimensions!   z
There are z extensible recipes!   u0   Subfile sizes don’t add up to the stated totalc                       d |   S Nr$   r   c)	char_baser   r   	char_info      zTFM._read.<locals>.char_infoc                    s    |  S r   r   r+   r.   datar   r   width_index   r/   zTFM._read.<locals>.width_indexc                    s    |  j k p|  jkp| dkS )Nr   )bcecr+   )sizesr2   r   r   noneexistent   s    zTFM._read.<locals>.noneexistentc                        | d  d S Nr      r   r+   r0   r   r   height_index      zTFM._read.<locals>.height_indexc                        | d  d S r8   r   r+   r0   r   r   depth_index   r;   zTFM._read.<locals>.depth_indexc                    r7   Nr   r$   r   r+   r0   r   r   italic_index  r;   zTFM._read.<locals>.italic_indexc                    r<   r>   r   r+   r0   r   r   tag  r;   zTFM._read.<locals>.tagc                    s    | d  S )Nr	   r   r+   r0   r   r   	remainder	  r   zTFM._read.<locals>.remainderc                    s   d|   } |dd S Nr$   vr   r,   r)
read_fixed
width_baser2   r   r   width     zTFM._read.<locals>.widthc                       d |   }|dd S rB   r   rD   )height_baser:   rF   r   r   height  rI   zTFM._read.<locals>.heightc                    rJ   rB   r   rD   )
depth_baser=   rF   r   r   depth  rI   zTFM._read.<locals>.depthc                    rJ   rB   r   rD   )italic_baser?   rF   r   r   italic  rI   zTFM._read.<locals>.italicc                    s   d |   S r*   r   r+   )
exten_baserA   r   r   exten  r   zTFM._read.<locals>.extenc                    r)   r*   r   i)lig_kern_baser   r   lig_step  r/   zTFM._read.<locals>.lig_stepc                    s   t  }tt | d  | |S r   )r   r   LIG_KERN_COMMAND)rT   Zcommandr1   r   r   lig_kern_command"  s   z#TFM._read.<locals>.lig_kern_commandc                    s   d |   }|dd S rB   r   )rT   rE   )	kern_baserF   r   r   kern'  s   zTFM._read.<locals>.kernc                    r)   r*   r   rS   )
param_baser   r   param+  r/   zTFM._read.<locals>.paramc                    s(   t d| dt  | d  |}|d S )Nz>;:r   )r   FIXED_FORMAT)indexkeyobjretrX   r   r   rF   .  s    zTFM._read.<locals>.read_fixed      ZMBLr	   ZRIZRCEz>;HEADERz:lzTEX MATH SYzTEX MATH EXZ	PARAMETER         rH   rL   rN   rP   Z
nextlargervarcharZreptopZmidZbot    /ZLIG>r   )@hasattrr"   open_datalen
SIZES_SIZEr   r   r   SIZES_FORMATZlfvarsitemsZlhr3   r4   ZnwZnhZndZninenlZnkZnpr   HEADER_FORMAT4HEADER_SIZE4extraheaderfacerangeHEADER_SIZE3HEADER_FORMAT3HEADER_SIZE2HEADER_FORMAT2HEADER_SIZE1HEADER_FORMAT1VANILLAfonttyper   upper
startswithMATHSYMATHEX
fontdimensBASE_PARAMSMATHSY_PARAMSMATHEX_PARAMSright_boundary_charleft_boundary_charZ	skip_byteZ	next_charZop_byterA   charsNO_TAGLIG_TAGLIST_TAGEXT_TAG	ligatureskerningsorted	STOP_FLAG	KERN_FLAG
setdefault)r   r   fpnamelengthr6   r@   rH   rL   rN   rP   rR   rV   rY   r[   r]   offsetrestsbrT   ZschemeZlig_kern_mapcmdrE   r,   infoZchar_tagri   partZligr   )r-   r.   r1   rM   r=   rQ   rK   r:   rO   r?   rZ   rU   r\   rF   rA   r5   rG   r2   r   r      s  




(
	











""
















z	TFM._readN)r   r   r   r   r!   r   r   r   r   r   r      s    r   __main__Nc                 c   s    | ]}|V  qd S r   r   ).0xr   r   r   	<genexpr>  s
    
r   ztfm.checksum=ztfm.designsize=ztfm.codingscheme=ztfm.fonttype=ztfm.family=ztfm.seven_bit_safe_flag=z	tfm.face=ztfm.extraheader=ztfm.fontdimens=ztfm.right_boundary_char=ztfm.left_boundary_char=ztfm.kerning=ztfm.ligatures=z
tfm.chars=)9__doc__typesr   ZfontTools.misc.sstructr   r   r   rt   rs   r_   r   r   r   ry   r   r   r~   rz   rW   r   r   r   r   r   r   ZUNREACHABLEZPASSTHROUGHZ
ACCESSABLEr   r   r   r   r   r   	Exceptionr   r   r   sysargvZtfmprintjoinZchecksumr    r   r   r   Zseven_bit_safe_flagr|   r{   r   r   r   r   r   r   r   r   r   r   <module>   s    %
	  

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