a
    ÛEbWS  ã                   @   sš   d dl Z 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 edejd	 ƒZed
ƒZdd„ ZG dd„ dƒZG dd„ deƒZdS )é    N)Ú
namedtuple)ÚBaseDatabaseIntrospection)Ú	FieldInfo©Ú	TableInfo)ÚIndex)Ú_lazy_re_compiler   )ÚpkÚhas_json_constraintz&^\s*(?:var)?char\s*\(\s*(\d+)\s*\)\s*$c                 C   s   t  | ¡}|rt|d ƒS dS )z6Extract the size number from a "varchar(11)" type nameé   N)Úfield_size_reÚsearchÚint)ÚnameÚm© r   úh/home/ja/django-apps/lartica_env/lib/python3.9/site-packages/django/db/backends/sqlite3/introspection.pyÚget_field_size   s    
r   c                   @   s@   e Zd Zdddddddddddd	d
dddddddœZdd„ ZdS )ÚFlexibleFieldLookupDictZBooleanFieldÚSmallIntegerFieldZPositiveSmallIntegerFieldÚIntegerFieldÚBigIntegerFieldZPositiveIntegerFieldZPositiveBigIntegerFieldZDecimalFieldZ
FloatFieldZ	TextFieldZ	CharFieldZBinaryFieldZ	DateFieldZDateTimeFieldZ	TimeField)ÚboolÚbooleanZsmallintzsmallint unsignedZsmallintegerr   ÚintegerZbigintzinteger unsignedzbigint unsignedÚdecimalÚrealÚtextÚcharZvarcharZblobÚdateÚdatetimeÚtimec                 C   s"   |  ¡  dd¡d  ¡ }| j| S )Nú(r   r   )ÚlowerÚsplitÚstripÚbase_data_types_reverse)ÚselfÚkeyr   r   r   Ú__getitem__6   s    z#FlexibleFieldLookupDict.__getitem__N)Ú__name__Ú
__module__Ú__qualname__r&   r)   r   r   r   r   r      s*   ír   c                       s„   e Zd Zeƒ Z‡ fdd„Zdd„ Zdd„ Zddd	„Zd
d„ Z	dd„ Z
dd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Z‡  ZS )ÚDatabaseIntrospectionc                    s.   t ƒ  ||¡}|jr |dv r dS |jr*dS |S )N>   r   r   r   Z	AutoFieldZ	JSONField)ÚsuperÚget_field_typer	   r
   )r'   Ú	data_typeÚdescriptionZ
field_type©Ú	__class__r   r   r/   >   s    z$DatabaseIntrospection.get_field_typec                 C   s   |  d¡ dd„ | ¡ D ƒ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  ƒ‘qS )r   r   r   )Ú.0Úrowr   r   r   Ú
<listcomp>V   ó    z8DatabaseIntrospection.get_table_list.<locals>.<listcomp>)ÚexecuteÚfetchall)r'   Úcursorr   r   r   Úget_table_listL   s    ÿz$DatabaseIntrospection.get_table_listc                    sŒ   |  d| jj |¡ ¡ | ¡ }|  ||¡‰ tƒ ‰| jjjrx|D ]6}|d }d| }|  d||g¡ 	¡ }|r@ˆ 
|¡ q@‡ ‡fdd„|D ƒS )zi
        Return a description of the table with the DB-API cursor.description
        interface.
        zPRAGMA table_info(%s)r   z%%json_valid("%s")%%zæ
                    SELECT sql
                    FROM sqlite_master
                    WHERE
                        type = 'table' AND
                        name = %s AND
                        sql LIKE %s
                c                    sH   g | ]@\}}}}}}t ||d t|ƒd d | |ˆ  |¡|dk|ˆv ƒ‘qS )Nr   )r   r   Úget)r4   Zcidr   r0   ZnotnullÚdefaultr	   ©Ú
collationsZjson_columnsr   r   r6   t   s   óõz?DatabaseIntrospection.get_table_description.<locals>.<listcomp>)r8   Ú
connectionÚopsÚ
quote_namer9   Ú_get_column_collationsÚsetÚfeaturesZcan_introspect_json_fieldÚfetchoneÚadd)r'   r:   Ú
table_nameZ
table_infoÚlineÚcolumnZjson_constraint_sqlr
   r   r>   r   Úget_table_descriptionX   s&    ÿ
÷òz+DatabaseIntrospection.get_table_descriptionr   c                 C   s   |   ||¡}||dœgS )N)ÚtablerJ   )Úget_primary_key_column)r'   r:   rH   Ztable_fieldsZpk_colr   r   r   Úget_sequences…   s    z#DatabaseIntrospection.get_sequencesc                 C   s~  i }|  d|g¡ | ¡ \}}|dkr*|S || d¡d | d¡… }| d¡D �]&}| ¡ }| d¡rjqPt d|tj	¡}|s€qPd	d
„ | 
¡ D ƒ\}	}
| d¡rÀt d|tj	¡}|d  d¡}n| ¡ d  d¡}|  d|	g¡ | ¡ d }|d  ¡ }| d¡| d¡ }}||d |… }| d¡D ]N}| ¡ }| d¡�rD�q(| dd¡d  d¡}||
k�r(||	f||<  qP�q(qP|S )z—
        Return a dictionary of {field_name: (field_name_other_table, other_table)}
        representing all relationships to the given table.
        úUSELECT sql, type FROM sqlite_master WHERE tbl_name = %s AND type IN ('table', 'view')Úviewr"   r   ú)ú,ÚUNIQUEz$references (\S*) ?\(["|]?(.*)["|]?\)c                 S   s   g | ]}|  d ¡‘qS )ú"©r%   ©r4   Úsr   r   r   r6   ¨   r7   z7DatabaseIntrospection.get_relations.<locals>.<listcomp>zFOREIGN KEYzFOREIGN KEY\s*\(([^\)]*)\).*rT   r   z1SELECT sql FROM sqlite_master WHERE tbl_name = %sú )r8   rF   ÚindexÚrindexr$   r%   Ú
startswithÚrer   ÚIÚgroupsÚmatchr9   )r'   r:   rH   Z	relationsÚ
create_sqlÚ
table_typeÚresultsÚ
field_descr   rL   rJ   Ú
field_nameÚresultZother_table_resultsÚliÚriZ
other_descZ
other_namer   r   r   Úget_relations‰   sF    ý



z#DatabaseIntrospection.get_relationsc                 C   s¢   g }|  d|dg¡ | ¡ d  ¡ }|| d¡d | d¡… }t| d¡ƒD ]N\}}| ¡ }| d¡rjqNt 	d	|tj
¡}|s€qN| td
d„ | ¡ D ƒƒ¡ qN|S )z‹
        Return a list of (column_name, referenced_table_name, referenced_column_name)
        for all key columns in given table.
        z?SELECT sql FROM sqlite_master WHERE tbl_name = %s AND type = %srL   r   r"   r   rQ   rR   rS   z("(.*)".*references (.*) \(["|](.*)["|]\)c                 s   s   | ]}|  d ¡V  qdS )rT   NrU   rV   r   r   r   Ú	<genexpr>á   r7   z8DatabaseIntrospection.get_key_columns.<locals>.<genexpr>)r8   rF   r%   rY   rZ   Ú	enumerater$   r[   r\   r   r]   ÚappendÚtupler^   )r'   r:   rH   Zkey_columnsrb   Zfield_indexrc   r   r   r   r   Úget_key_columnsÃ   s     þ
z%DatabaseIntrospection.get_key_columnsc           	      C   s¢   |  d|g¡ | ¡ }|du r*td| ƒ‚|\}}|dkr>dS || d¡d | d¡… }| d¡D ]8}| ¡ }t d	|¡}|rd|d r�|d n|d
   S qddS )z>Return the column name of the primary key for the given table.rO   NzTable %s does not existrP   r"   r   rQ   rR   z1(?:(?:["`\[])(.*)(?:["`\]])|(\w+)).*PRIMARY KEY.*é   )	r8   rF   Ú
ValueErrorrY   rZ   r$   r%   r\   r_   )	r'   r:   rH   r5   r`   ra   Z
fields_sqlrc   r   r   r   r   rM   å   s&    ýÿz,DatabaseIntrospection.get_primary_key_columnc           
      C   sd   i }|  d| jj |¡ ¡ | ¡ D ]:}|d d… \}}}}}	|gdd||	fdddœ|d| < q$|S )NzPRAGMA foreign_key_list(%s)é   F©ÚcolumnsÚprimary_keyÚuniqueÚforeign_keyÚcheckrY   zfk_%d)r8   r@   rA   rB   r9   )
r'   r:   rH   Úconstraintsr5   Zid_Ú_rL   Zfrom_Útor   r   r   Ú_get_foreign_key_constraintsþ   s    ÿúz2DatabaseIntrospection._get_foreign_key_constraintsc                 C   sÆ  d }d }d }d }d}g }d}	g }
d}|D �]V}|  tjjd¡rH|d7 }nF|  tjjd¡rp|d8 }|dk rŽ �q‚n|dkrŽ|  tjjd¡rŽ �q‚|d u r¬|  tjjd¡}|r¬q(|�r~|d u rø|jtjjtjjfv rØ|j}n |jtjjj	j
krø|jdd… }|  tjjd	¡�rd
}|}nh|�râ||k�r.|r(d}q(|jtjjtjjfv �rT| |j¡ n(|jtjjj	j
k�râ| |jdd… ¡ nd|d u �rÊ|jtjjtjjfv �r¨|j}n"|jtjjj	j
k�rÊ|jdd… }|  tjjd	¡�râ|g}|  tjjd¡�rþd
}	|}q(|	r(||k�r|
r(d}	q(|jtjjtjjfv �rH|j|v �r€|
 |j¡ q(|jtjjj	j
kr(|jdd… |v r(|
 |jdd… ¡ q(|�ršd
|dd dddœnd }|
�r¶d
|
ddd ddœnd }||||fS )NFr   r"   r   rQ   rR   Z
CONSTRAINTéÿÿÿÿrS   TZCHECK)rt   rr   rs   ru   rv   rY   )rv   rr   rs   rt   ru   rY   )r_   ÚsqlparseÚtokensÚPunctuationÚKeywordÚttypeÚNameÚvalueÚLiteralÚStringÚSymbolrk   )r'   r}   rr   ÚtokenZis_constraint_definitionrd   Úconstraint_namert   Zunique_columnsrv   Zcheck_columnsZbraces_deepZunique_braces_deepZcheck_braces_deepZunique_constraintZcheck_constraintr   r   r   Ú&_parse_column_or_constraint_definition  s¬    

ÿ



øú	öøú	öz<DatabaseIntrospection._parse_column_or_constraint_definitionc                 C   s¾   t  |¡d }i }d}dd„ | ¡ D ƒ}|D ]}| t jjd¡r, qFq,|  ||¡\}}	}
}|	r€|rl|	||< n|d7 }|	|d| < |
r¦|r’|
||< n|d7 }|
|d| < | t jjd¡rFqºqF|S )Nr   c                 s   s   | ]}|j s|V  qd S ©N)Zis_whitespace)r4   r†   r   r   r   ri   z  r7   zADatabaseIntrospection._parse_table_constraints.<locals>.<genexpr>r"   r   z__unnamed_constraint_%s__rQ   )r|   ÚparseÚflattenr_   r}   r~   rˆ   )r'   Úsqlrr   Z	statementrw   Zunnamed_constrains_indexr}   r†   r‡   rt   rv   Z	end_tokenr   r   r   Ú_parse_table_constraintst  s@    
û
þÿ
þÿz.DatabaseIntrospection._parse_table_constraintsc              	   C   s¤  i }z&|  d| jj |¡f ¡ ¡ d }W n ty<   Y n*0 dd„ |  ||¡D ƒ}| |  ||¡¡ |  d| jj |¡ ¡ | 	¡ D ]Ü}|dd… \}}}	|  d| jj |¡ ¡ | ¡ p¾d	\}
|
sÈq†|  d
| jj |¡ ¡ | 	¡ D ]@\}}}||v�rg dt
|	ƒddddœ||< || d  |¡ qè|| d r†tj|| d< |  |
¡}|dur†||| d< q†|  ||¡}|�rŽ|gddddddœ|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   ©r4   Úinfor   r   r   Ú	<setcomp>«  s   z8DatabaseIntrospection.get_constraints.<locals>.<setcomp>zPRAGMA index_list(%s)Né   z<SELECT sql FROM sqlite_master WHERE type='index' AND name=%sr‰   zPRAGMA index_info(%s)FTrq   rr   rY   ÚtypeÚordersZ__primary__)r8   r@   rA   rB   rF   Ú	TypeErrorrK   Úupdater�   r9   r   rk   r   ÚsuffixÚ_get_index_columns_ordersrM   rz   )r'   r:   rH   rw   Ztable_schemarr   r5   ÚnumberrY   rt   rŒ   Z
index_rankZcolumn_rankrJ   r“   Z	pk_columnr   r   r   Úget_constraints›  sr    ÿÿý
ÿÿÿÿÿ
ú

ú
z%DatabaseIntrospection.get_constraintsc                 C   sP   t  |¡d }|D ]8}t|t jjƒrt|ƒ d¡ d¡}dd„ |D ƒ  S qd S )Nr   ú()ú, c                 S   s   g | ]}|  d ¡rd nd‘qS )ZDESCÚASC)ÚendswithrŽ   r   r   r   r6   ô  r7   zCDatabaseIntrospection._get_index_columns_orders.<locals>.<listcomp>)r|   rŠ   Ú
isinstancerŒ   ZParenthesisÚstrr%   r$   )r'   rŒ   r}   r†   rr   r   r   r   r—   ï  s    z/DatabaseIntrospection._get_index_columns_ordersc                 C   sª   |  d|g¡ ¡ }|si S |d }tt |¡d d ƒ d¡ d¡}i }|D ]X}|dd …  ¡ }|d  d¡}	t|ƒD ] \}
}|dkrv||
d  } qœqvd }|||	< qL|S )	Nzn
            SELECT sql
            FROM sqlite_master
            WHERE type = 'table' AND name = %s
        r   r{   rš   r›   r   rT   ZCOLLATE)r8   rF   rŸ   r|   rŠ   r%   r$   rj   )r'   r:   rH   r5   rŒ   rr   r?   rJ   r}   Zcolumn_namerY   r†   Z	collationr   r   r   rC   ÷  s&    ú"
z,DatabaseIntrospection._get_column_collations)r   )r*   r+   r,   r   Zdata_types_reverser/   r;   rK   rN   rh   rm   rM   rz   rˆ   r�   r™   r—   rC   Ú__classcell__r   r   r2   r   r-   ;   s   -
:"d'Tr-   )r\   Úcollectionsr   r|   Z%django.db.backends.base.introspectionr   r   ZBaseFieldInfor   Zdjango.db.modelsr   Zdjango.utils.regex_helperr   Ú_fieldsr   r   r   r-   r   r   r   r   Ú<module>   s   
ÿ	