o
    `ZhD                     @   s   d dl mZ d dlZd dlmZ d dlmZ d dlmZ d dlm	Z	 d dl
mZ d dlmZ ed	ejd
 ZedZdd ZG dd dZG dd deZdS )    )
namedtupleN)DatabaseError)BaseDatabaseIntrospection)	FieldInfo	TableInfo)Index)_lazy_re_compiler   )pkhas_json_constraintz&^\s*(?:var)?char\s*\(\s*(\d+)\s*\)\s*$c                 C   s   t | }|rt|d S dS )z6Extract the size number from a "varchar(11)" type name   N)field_size_researchint)namem r   _/var/www/html/lang_env/lib/python3.10/site-packages/django/db/backends/sqlite3/introspection.pyget_field_size   s   
r   c                   @   s   e Zd Zi ddddddddddd	d
dd
dddddddddddddddddddddd d!Zd"d# Zd$S )%FlexibleFieldLookupDictboolZBooleanFieldbooleanZsmallintSmallIntegerFieldzsmallint unsignedZPositiveSmallIntegerFieldZsmallintegerr   IntegerFieldintegerZbigintBigIntegerFieldzinteger unsignedZPositiveIntegerFieldzbigint unsignedZPositiveBigIntegerFielddecimalZDecimalFieldrealZ
FloatFieldtextZ	TextFieldcharZ	CharFieldZvarcharZblobZBinaryFielddateZ	DateFieldZDateTimeFieldZ	TimeField)datetimetimec                 C   s"   |  ddd  }| j| S )N(r   r   )lowersplitstripbase_data_types_reverse)selfkeyr   r   r   __getitem__6   s   
z#FlexibleFieldLookupDict.__getitem__N)__name__
__module____qualname__r'   r*   r   r   r   r   r      sP    	
r   c                       st   e Zd Ze Z fddZdd Zdd Zddd	Zd
d Z	dd Z
dd Zdd Zdd Zdd Zdd Z  ZS )DatabaseIntrospectionc                    s.   t  ||}|jr|dv rdS |jrdS |S )N>   r   r   r   Z	AutoFieldZ	JSONField)superget_field_typer
   r   )r(   	data_typedescriptionZ
field_type	__class__r   r   r0   >   s   z$DatabaseIntrospection.get_field_typec                 C   s   | d dd | D S )z>Return a list of table and view names in the current database.z
            SELECT name, type FROM sqlite_master
            WHERE type in ('table', 'view') AND NOT name='sqlite_sequence'
            ORDER BY namec                 S   s"   g | ]}t |d  |d d  qS )r   r   r   ).0rowr   r   r   
<listcomp>V   s   " z8DatabaseIntrospection.get_table_list.<locals>.<listcomp>)executefetchall)r(   cursorr   r   r   get_table_listL   s   z$DatabaseIntrospection.get_table_listc                    s   | d| jj|  | }|std| d| || t | jjj	rF|D ]}|d }d| }| d||g
 }|rE| q* fdd|D S )	zi
        Return a description of the table with the DB-API cursor.description
        interface.
        zPRAGMA table_xinfo(%s)zTable z does not exist (empty pragma).r   z%%json_valid("%s")%%z
                    SELECT sql
                    FROM sqlite_master
                    WHERE
                        type = 'table' AND
                        name = %s AND
                        sql LIKE %s
                c                    sR   g | ]%\}}}}}}}|d v rt ||t|ddd| | ||dk|v qS ))r         Nr   )r   r   get)r5   Zcidr   r1   Znotnulldefaultr
   Zhidden
collationsZjson_columnsr   r   r7   v   s&    z?DatabaseIntrospection.get_table_description.<locals>.<listcomp>)r8   
connectionops
quote_namer9   r   _get_column_collationssetfeaturesZcan_introspect_json_fieldfetchoneadd)r(   r:   
table_nameZ
table_infolinecolumnZjson_constraint_sqlr   r   r@   r   get_table_descriptionX   s0   


z+DatabaseIntrospection.get_table_descriptionr   c                 C   s   |  ||}||dgS )N)tablerL   )Zget_primary_key_column)r(   r:   rJ   Ztable_fieldsZpk_colr   r   r   get_sequences   s   z#DatabaseIntrospection.get_sequencesc                 C   *   | d| jj|  dd | D S )z
        Return a dictionary of {column_name: (ref_column_name, ref_table_name)}
        representing all foreign keys in the given table.
        zPRAGMA foreign_key_list(%s)c                 S   s"   i | ]^}}}}}}|||fqS r   r   )r5   _ref_table_namecolumn_nameref_column_namer   r   r   
<dictcomp>   s    z7DatabaseIntrospection.get_relations.<locals>.<dictcomp>r8   rB   rC   rD   r9   r(   r:   rJ   r   r   r   get_relations   s   	z#DatabaseIntrospection.get_relationsc                 C   rP   )NzPRAGMA table_info(%s)c                 S   s   g | ]^}}}}|r|qS r   r   )r5   rQ   r   r
   r   r   r   r7          zADatabaseIntrospection.get_primary_key_columns.<locals>.<listcomp>rV   rW   r   r   r   get_primary_key_columns   s   z-DatabaseIntrospection.get_primary_key_columnsc                 C   s  d }d }d }d }d}g }d}	g }
d}|D ]!}| tjjdr$|d7 }n"| tjjdr8|d8 }|dk r7 n n|dkrF| tjjdrF n|d u rU| tjjd}|rUq|r|d u rz|jtjjtjjfv rj|j}n|jtjjj	j
krz|jdd }| tjjd	rd
}|}n_|r||kr|rd}q|jtjjtjjfv r||j nB|jtjjj	j
kr||jdd  n.|d u r|jtjjtjjfv r|j}n|jtjjj	j
kr|jdd }| tjjd	r|g}| tjjdrd
}	|}q|	r6||kr|
rd}	q|jtjjtjjfv r|j|v r|
|j q|jtjjj	j
kr6|jdd |v r6|
|jdd  q|rCd
|dd dddnd }|
rQd
|
ddd ddnd }||||fS )NFr   r#   r   ),Z
CONSTRAINTZUNIQUETZCHECK)uniquecolumnsprimary_keyforeign_keycheckindex)rb   r_   r`   r^   ra   rc   )matchsqlparsetokensPunctuationKeywordttypeNamevalueLiteralStringSymbolappend)r(   rf   r_   tokenZis_constraint_definition
field_nameconstraint_namer^   Zunique_columnsrb   Zcheck_columnsZbraces_deepZunique_braces_deepZcheck_braces_deepZunique_constraintZcheck_constraintr   r   r   &_parse_column_or_constraint_definition   s   


		z<DatabaseIntrospection._parse_column_or_constraint_definitionc                 C   s   t |d }i }d}dd | D }|D ]}|t jjdr" nq	 | ||\}}	}
}|	rA|r7|	||< n
|d7 }|	|d| < |
rT|rJ|
||< n
|d7 }|
|d| < |t jjdr_	 |S q$)	Nr   c                 s   s    | ]}|j s|V  qd S N)Zis_whitespace)r5   rp   r   r   r   	<genexpr>  s    zADatabaseIntrospection._parse_table_constraints.<locals>.<genexpr>r#   Tr   z__unnamed_constraint_%s__r[   )re   parseflattenrd   rf   rg   rs   )r(   sqlr_   Z	statementconstraintsZunnamed_constrains_indexrf   rp   rr   r^   rb   Z	end_tokenr   r   r   _parse_table_constraints  sF   


z.DatabaseIntrospection._parse_table_constraintsc              	   C   s  i }z| d| jj|f  d }W n	 ty   Y nw dd | ||D }|| || | d| jj|  |	 D ]m}|dd \}}}	| d| jj|  | p_d	\}
|
sdqC| d
| jj|  |	 D ]\}}}||vrg dt
|	dddd||< || d | qt|| d rtj|| d< | |
}|dur||| d< qC| ||}|r|dddddd|d< t| || }|dd |D  |S )zu
        Retrieve any constraints or keys (unique, pk, fk, check, index) across
        one or more columns.
        z<SELECT sql FROM sqlite_master WHERE type='table' and name=%sr   c                 S   s   h | ]}|j qS r   )r   r5   infor   r   r   	<setcomp>F  s    z8DatabaseIntrospection.get_constraints.<locals>.<setcomp>zPRAGMA index_list(%s)Nr=   z<SELECT sql FROM sqlite_master WHERE type='index' AND name=%srt   zPRAGMA index_info(%s)FTr_   r`   r^   ra   rb   rc   r_   rc   typeordersZ__primary__c              
   S   s8   i | ]\}\}\}}d | |gdd||fdddqS )Zfk_Fr~   r   )r5   rc   rS   rT   rR   r   r   r   rU     s    	z9DatabaseIntrospection.get_constraints.<locals>.<dictcomp>)r8   rB   rC   rD   rH   	TypeErrorrM   updaterz   r9   r   ro   r   suffix_get_index_columns_ordersrZ   	enumeraterX   items)r(   r:   rJ   ry   Ztable_schemar_   r6   numberrc   r^   rx   Z
index_rankZcolumn_rankrL   r   Z
pk_columnsZ	relationsr   r   r   get_constraints6  s   



	z%DatabaseIntrospection.get_constraintsc                 C   sP   t |d }|D ]}t|t jjr%t|dd}dd |D   S q	d S )Nr   (), c                 S   s   g | ]}| d rd ndqS )ZDESCASC)endswithr{   r   r   r   r7     rY   zCDatabaseIntrospection._get_index_columns_orders.<locals>.<listcomp>)re   rv   
isinstancerx   ZParenthesisstrr&   r%   )r(   rx   rf   rp   r_   r   r   r   r     s   z/DatabaseIntrospection._get_index_columns_ordersc                 C   s   | d|g }|si S |d }tt|d d dd}i }|D ],}|dd   }|d d}	t|D ]\}
}|dkrK||
d  } nq;d }|||	< q&|S )	Nzn
            SELECT sql
            FROM sqlite_master
            WHERE type = 'table' AND name = %s
        r   r]   r   r   r   "ZCOLLATE)r8   rH   r   re   rv   r&   r%   r   )r(   r:   rJ   r6   rx   r_   rA   rL   rf   rS   rc   rp   Z	collationr   r   r   rE     s,   "
z,DatabaseIntrospection._get_column_collations)r   )r+   r,   r-   r   Zdata_types_reverser0   r;   rM   rO   rX   rZ   rs   rz   r   r   rE   __classcell__r   r   r3   r   r.   ;   s    
5d'ar.   )collectionsr   re   Z	django.dbr   Z%django.db.backends.base.introspectionr   r   ZBaseFieldInfor   Zdjango.db.modelsr   Zdjango.utils.regex_helperr	   _fieldsr   r   r   r.   r   r   r   r   <module>   s    
	