
    Ng,                        d dl Z d dlZd dlmZmZmZ d dlmZmZm	Z	m
Z
mZmZmZm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dededefdZdededefdZdededefdZ dededefdZ!de"de#defdZ$ee"eeef         f         Z%ee"eee
e         e
e         f         f         Z&ee"eeee#e%e&f         f         Z' G d d          Z( G d d           Z)dS )!    N)packunpackcalcsize)BinaryIODictIterableListOptionalTupleUnioncast))>Lnumber)>Bflags)r   retention_flags)r   
page_assoc)r   data_length   @   ?      i   l    &   1   3   s   JB2

   bit_posvaluereturnc                 ,    t          || z	  dz            S )Nr   bool)r   r   s     J/var/www/html/ai-engine/env/lib/python3.11/site-packages/pdfminer/jbig2.pybit_setr%   %   s    '!Q&'''    flagc                 &    t          | |z            S Nr"   )r'   r   s     r$   
check_flagr*   )   s    ur&   maskc                 z    t          dd          D ]}t          ||           r
|| z  |z	  c S t          d          Nr      zInvalid mask or valueranger%   	Exceptionr+   r   r   s      r$   masked_valuer3   -   sV    B<< - -7D!! 	-DLW,,,,	- +
,
,,r&   c                     t          dd          D ]}t          ||           r|| |z	  z  |z  c S  t          d          r-   r/   r2   s      r$   
mask_valuer5   5   s[    B<< : :7D!! 	:TW_-'9999	: +
,
,,r&   formatbufferc                 r    | dv sJ t          t          t                   t          | |                    \  }|S )N>   r   >Ir   )r   r   intr   )r6   r7   results      r$   
unpack_intr<   =   s8    '''''E#Jvv 6 677HVMr&   c                       e Zd ZdZdeddfdZdee         fdZde	fdZ
ded	ed
edefdZded	ed
edefdZdeded
edefdZdeded
edefdZdS )JBIG2StreamReaderz&Read segments from a JBIG2 byte streamstreamr    Nc                     || _         d S r)   r?   selfr?   s     r$   __init__zJBIG2StreamReader.__init__M       r&   c                    g }|                                  si }t          D ]\  }}t          |          }| j                            |          }t          |          |k     rd|d<    nFt          ||          }t          | d|z  d           }t          |          r ||||          }|||<   |	                    d          s|
                    |           |                                  |S )NT_errorzparse_%s)is_eof
SEG_STRUCTr   r?   readlenr<   getattrcallablegetappend)	rC   segmentssegmentfield_formatname	field_lenfieldr   parsers	            r$   get_segmentszJBIG2StreamReader.get_segmentsP   s   ')++-- 	)$&G&0 
& 
&"d$\22	((33u::	))(,GH%E"<77 zD'8$??F## :"F7E599E %;;x(( )((( ++-- 	)  r&   c                     | j                             d          dk    rdS | j                             dt          j                   dS )Nr   r&   TF)r?   rJ   seekosSEEK_CUR)rC   s    r$   rH   zJBIG2StreamReader.is_eofd   sA    ;A#%%4KR---5r&   rQ   r   rU   c                     t          t          |          t          t          |          t          t          |          dS )N)deferredpage_assoc_longtype)r*   HEADER_FLAG_DEFERREDHEADER_FLAG_PAGE_ASSOC_LONGr3   SEG_TYPE_MASK)rC   rQ   r   rU   s       r$   parse_flagszJBIG2StreamReader.parse_flagsk   s<     ##7??)*EuMM 66
 
 	
r&   c                    t          t          |          }g }g }|t          k     r6t          d          D ]%}|                    t          ||                     &n|| j                            d          z  }t          d|          }t          t          |          }t          t          j        |dz   dz                      }t          |          D ]_}	t          d| j                            d                    }
t          d          D ]%}|                    t          ||
                     &`|d         }t          |t                    sJ |d	k    rd}n|d
k    rd}nd}t          |          }t          |          D ]A}| j                            |          }t          ||          }|                    |           B|||dS )N      r   r      r   r   r         r9   )	ref_countretain_segmentsref_segments)r3   REF_COUNT_SHORT_MASKREF_COUNT_LONGr0   rO   r%   r?   rJ   r<   REF_COUNT_LONG_MASKr:   mathceil
isinstancer   )rC   rQ   r   rU   rk   rl   rm   r   ret_bytes_countret_byte_indexret_byteseg_num
ref_formatref_size	ref_indexref_datarefs                    r$   parse_retention_flagsz'JBIG2StreamReader.parse_retention_flagst   s    !!5u==	~%% 88 @ @&&ww'>'>????@ T[%%a(((E"4//I$%8)DDI!$)Y]a,?"@"@AAO"'"8"8 G G%dDK,<,<Q,?,?@@$Qxx G GG#**77H+E+EFFFFG (#'3'''''c>>JJJJJJ''y)) 	% 	%I{''11HZ22C$$$$ #.(
 
 	
r&   pagec                     t          t          |d                   d         r-|| j                            d          z  }t	          d|          }|S )Nr   r_   rg   r   )r   JBIG2SegmentFlagsr?   rJ   r<   )rC   rQ   r~   rU   s       r$   parse_page_assocz"JBIG2StreamReader.parse_page_assoc   sN    !77#3445FG 	+T[%%a(((EdE**Dr&   lengthc                     |rat          t          |d                   d         t          k    r|t          k    rt	          d          | j                            |          |d<   |S )Nr   r`   z:Working with unknown segment length is not implemented yetraw_data)r   r   SEG_TYPE_IMMEDIATE_GEN_REGIONDATA_LEN_UNKNOWNNotImplementedErrorr?   rJ   )rC   rQ   r   rU   s       r$   parse_data_lengthz#JBIG2StreamReader.parse_data_length   ss      
	?&(899&A01 1---)S   '+k&6&6v&>&>
#r&   )__name__
__module____qualname____doc__r   rD   r	   JBIG2SegmentrW   r#   rH   r:   bytesr   rd   JBIG2RetentionFlagsr}   r   r    r&   r$   r>   r>   J   sE       00x D    d<0    (    
#
,/
8=
	
 
 
 
(
#(
,/(
8=(
	(
 (
 (
 (
T C  RU    #-09>	     r&   r>   c                   2   e Zd ZU dZd eee         g            eee         g           dZe	e
d<   deddfdZ	 dd
ee         dedefdZ	 dd
ee         dedefdZdedefdZdededefdZde	dedefdZdededefdZdededefdZdedefdZdS )JBIG2StreamWriterz.Write JBIG2 segments to a file in JBIG2 formatr   )rk   rm   rl   EMPTY_RETENTION_FLAGSr?   r    Nc                     || _         d S r)   rA   rB   s     r$   rD   zJBIG2StreamWriter.__init__   rE   r&   TrP   fix_last_pagec                 `   d}d }d }|D ]}|                      |          }| j                            |           |t          |          z  }t	          t
          t                   |d                   }|rYt	          t          |                    d                    }t	          t          |d                   d         t          k    rd }|r|}|r^|r\|Z| 
                    |dz   |          }|                      |          }| j                            |           |t          |          z  }|S )Nr   r   r   r   r`   r   )encode_segmentr?   writerK   r   r
   r:   rN   r   SEG_TYPE_END_OF_PAGEget_eop_segment)	rC   rP   r   data_lencurrent_pagerw   rQ   dataseg_pages	            r$   write_segmentsz JBIG2StreamWriter.write_segments   s?    &*!% 	, 	,G&&w//DKd###D		!H8C='(*;<<G 	,W[[%>%>?? *GG,<==fE+, , $(LL ,#+L 	"\ 	"w/B**7Q;EEG&&w//DKd###D		!Hr&   c                    t           }t          }|t          d|          z  }t          dd          }||z  }| j                            |           t          |          }||                     ||          z  }d}|D ]}t          t          |d                   }|rd}	nd}	| 	                    ||	z             }
| 
                    |
          }| j                            |           |t          |          z  }|S )Nr   r   r   r   r      )FILE_HEADER_IDFILE_HEAD_FLAG_SEQUENTIALr   r?   r   rK   r   r   r:   get_eof_segmentr   )rC   rP   r   headerheader_flagsnumber_of_pagesr   rw   rQ   seg_num_offseteof_segmentr   s               r$   
write_filezJBIG2StreamWriter.write_file   s
     0$t\*** tQ--/!&!!!v;;D''-@@@ 	3 	3G3 122GG 	NNN**7^+CDD"";//$CIIr&   rQ   c                     d}t           D ]_\  }}|                    |          }t          | d|z  d           }t          |          r |||          }nt	          ||          }||z  }`|S )Nr&   z	encode_%s)rI   rN   rL   rM   r   )rC   rQ   r   rR   rS   r   encoderrU   s           r$   r   z JBIG2StreamWriter.encode_segment  s    ", 	 	L$KK%%EdK$$6==G   2w//\511EMDDr&   r   c                 D   d}|                     d          r
|t          z  }d|v r||d         rt          n|z  }n9|t          t          |                     dd                    dk    rt          n|z  }|t          t          |d                   z  }t          d|          S )Nr   r^   r_   r~      r`   r   )rN   ra   rb   r   r:   r5   rc   r   )rC   r   rQ   r   s       r$   encode_flagszJBIG2StreamWriter.encode_flags  s    99Z   	*))E%%E:K4LW00RWWEEW[[3344s:: ,+E 	M5=999D%   r&   c                    g }d}|d         }t          |t                    sJ t          t          t                   |                    dg                     }|dk    rJt          t          |          }t          |          D ]\  }}	|	r|d|z  z  }|	                    |           nt          j        |dz   dz            }
dd|
z  z   }t          t          t                    d	z  }|	                    |           t          |
          D ]M}d
}||dz  |dz  dz            }t          |          D ]\  }}||rd|z  n|z  }|	                    |           Nt          t          t                   |                    dg                     }t          t          |d                   }|dk    rd}n|dk    rd}nd}|D ]}||z  }|	                    |           t          |g|R  S )Nr   rk   rl      r   rh   r   B   r   rm   r   ri   rj   IL)rs   r:   r   r	   r#   rN   r5   rn   	enumeraterO   rq   rr   ro   r0   r   )rC   r   rQ   r   flags_formatrk   rl   
flags_byterz   
ref_retainbytes_countflags_dword
byte_indexrv   ret_partr   ret_segrm   rw   rx   r|   s                        r$   encode_retention_flagsz(JBIG2StreamWriter.encode_retention_flags   s#    +&	)S)))))tDz5995F+K+KLL>>#$8)DDJ)2?)C)C 1 1%	: 1!y.0JLL$$$$)Y]a$788K3#45L$%9>JJbPKLL%%%#K00 ' '
*:>JNQ<N+NO(1((;(; F F$GW EWXEHHX&&&&DIuyy'D'DEEsGH-..c>>JJJJJ 	 	CJ&LLLL)5))))r&   c                 b    t          d|          }|t          t          |d                   z  }|S )Nr   r   )r   r   r   )rC   r   rQ   r   s       r$   encode_data_lengthz$JBIG2StreamWriter.encode_data_lengthM  s/    D%  UGJ/000r&   
seg_numberpage_numberc                 8    ddt           d||dt          j        dS Nr   F)r^   r`   r&   )r   r   r   r   r   r   )r   r   r   )rC   r   r   s      r$   r   z!JBIG2StreamWriter.get_eop_segmentR  s/    "'1EFF %0F
 
 	
r&   c                 8    ddt           d|ddt          j        dS r   )SEG_TYPE_END_OF_FILEr   r   )rC   r   s     r$   r   z!JBIG2StreamWriter.get_eof_segment\  s/    "'1EFF 0F
 
 	
r&   )T)r   r   r   r   r   r	   r:   r#   r   r   __annotations__r   rD   r   r   r   r   r   r   r   r   r   r   r   r   r   r&   r$   r   r      s        88 T#Y++4T
B//2 2.   x D     GK  .?C	   D GK  .?C	   >
l 
u 
 
 
 
!"3 !l !u ! ! ! !$+*(+*3?+*	+* +* +* +*Z l u    

# 
C 
L 
 
 
 

# 
, 
 
 
 
 
 
r&   r   )*rq   r[   structr   r   r   typingr   r   r   r	   r
   r   r   r   rI   ra   rb   rc   rn   rp   ro   r   r   r   r   r   r   r:   r#   r%   r*   r3   r5   strr   r<   r   r   r   r>   r   r   r&   r$   <module>r      sj    				 ) ) ) ) ) ) ) ) ) ) O O O O O O O O O O O O O O O O O O O O  
 " ( !     !#    5& (S ( ( ( ( ( (S      -s -3 -3 - - - --S - - - - - -s E c     eCI../ 3c49d4j&@ AAB tS%!24GG	HH
i i i i i i i iXn
 n
 n
 n
 n
 n
 n
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r&   