U
    xž^­E  ã                   @   s¨   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	 dd
lmZ
 ddlmZ G dd„ deƒZe	jG dd„ deƒƒZdZddd„Zdd„ ZdS )é    Né   )Ú_EnumeratedValues)ÚSET)ÚDATETIME)ÚTIME)Ú	TIMESTAMPé   )Úlog)Útypes)Úutilc                   @   s   e Zd ZdZdd„ ZdS )ÚReflectedStatez;Stores raw information about a SHOW CREATE TABLE statement.c                 C   s(   g | _ i | _d | _g | _g | _g | _d S ©N)ÚcolumnsÚtable_optionsÚ
table_nameÚkeysÚfk_constraintsÚck_constraints)Úself© r   úL/tmp/pip-install-dq5v43_d/SQLAlchemy/sqlalchemy/dialects/mysql/reflection.pyÚ__init__   s    zReflectedState.__init__N)Ú__name__Ú
__module__Ú__qualname__Ú__doc__r   r   r   r   r   r      s   r   c                   @   st   e Zd Z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dZdd„ Zdd„ Zdd„ ZdS )ÚMySQLTableDefinitionParserz4Parses the results of a SHOW CREATE TABLE statement.c                 C   s   || _ || _|  ¡  d S r   )ÚdialectÚpreparerÚ_prep_regexes)r   r   r   r   r   r   r   $   s    z#MySQLTableDefinitionParser.__init__c                 C   sê   t ƒ }||_t d|¡D ]Ì}| d| jj ¡r<|  ||¡ q| d¡rT|  ||¡ q|dkr^q| d¡rv|  	||¡ q|s|q|  
|¡\}}|d kr¢t d| ¡ q|dkr¸|j |¡ q|dkrÎ|j |¡ q|d	kr|j |¡ qq|S )
Nz\r?\nz  z) ú)zCREATE zUnknown schema content: %rÚkeyÚfk_constraintÚck_constraint)r   ÚcharsetÚreÚsplitÚ
startswithr   Úinitial_quoteÚ_parse_columnÚ_parse_table_optionsÚ_parse_table_nameÚ_parse_constraintsr   Úwarnr   Úappendr   r   )r   Zshow_creater$   ÚstateÚlineÚtype_Úspecr   r   r   Úparse)   s0    

z MySQLTableDefinitionParser.parsec                 C   s:  | j  |¡}|rŠ| ¡ }|  |d ¡|d< |d rb| j |d ¡}|rb| ¡ d rb| ¡ d |d< |d r‚| j |d ¡d |d< d|fS | j |¡}|rö| ¡ }| j |d ¡|d< dd„ |  |d	 ¡D ƒ|d	< d
d„ |  |d ¡D ƒ|d< d|fS | j |¡}|r| ¡ }d|fS | j	 |¡}|r2d|fS d|fS )zaParse a KEY or CONSTRAINT line.

        :param line: A line of SHOW CREATE TABLE output
        r   Zversion_sqlÚparserr   r!   Útablec                 S   s   g | ]}|d  ‘qS ©r   r   ©Ú.0Úcr   r   r   Ú
<listcomp>f   s     zAMySQLTableDefinitionParser._parse_constraints.<locals>.<listcomp>Úlocalc                 S   s   g | ]}|d  ‘qS r6   r   r7   r   r   r   r:   g   s    Zforeignr"   r#   Ú	partitionN)
Ú_re_keyÚmatchÚ	groupdictÚ_parse_keyexprsÚ_re_key_version_sqlr   Zunformat_identifiersÚ_re_fk_constraintÚ_re_ck_constraintÚ_re_partition)r   r0   Úmr2   Úm2r   r   r   r,   I   s@    ÿþÿ
z-MySQLTableDefinitionParser._parse_constraintsc                 C   s,   | j \}}| |¡}|r(|| d¡ƒ|_dS )zZExtract the table name.

        :param line: The first line of SHOW CREATE TABLE
        ÚnameN)Ú_pr_namer>   Úgroupr   )r   r0   r/   ÚregexÚcleanuprE   r   r   r   r+   {   s    

z,MySQLTableDefinitionParser._parse_table_namec                 C   sº   i }|rx|dkrnf|dd… }| j D ]R\}}| |¡}|s<q$| d¡| d¡ }}	|r^||	ƒ}	|	|| ¡ < | d|¡}q$dD ]}
| |
d¡ q|| ¡ D ]\}}||jd| jj	|f < q–dS )zƒBuild a dictionary of all reflected table-level options.

        :param line: The final line of SHOW CREATE TABLE output.
        r    NÚ	directiveÚvalÚ )Úauto_incrementzdata directoryzindex directoryz%s_%s)
Ú_pr_optionsÚsearchrI   ÚlowerÚsubÚpopÚitemsr   r   rG   )r   r0   r/   ÚoptionsZrest_of_linerJ   rK   rE   rL   ÚvalueZnopeÚoptrM   r   r   r   r*   †   s"    
z/MySQLTableDefinitionParser._parse_table_optionsc                 C   s”  d}| j  |¡}|r&| ¡ }d|d< n | j |¡}|rF| ¡ }d|d< |s\t d| ¡ dS |d srt d| ¡ |d |d |d	   }}}z| jj| }W n, tk
rÊ   t d
||f ¡ t	j
}Y nX |dksÜ|dkrâg }	n@|d dkr|d dkr| j |¡}	ndd„ | j |¡D ƒ}	i }
t|tttfƒrL|	rL|	 d¡|
d< dD ]}| |d¡rPd|
|< qPdD ] }| |d¡rr|| |
|< qrt|tƒrÈt |	¡}	t|tƒrÈd|	krÈd|
d< ||	|
Ž}i }d|d< | dd¡dkrød|d< | dd¡rd|d< nt|t	jƒr&d|d< | dd¡}|dkr@d}| dd¡}|dk	rj| dd¡ dd¡}t||||d }| |¡ |j |¡ dS )!z­Extract column details.

        Falls back to a 'minimal support' variant if full parse fails.

        :param line: Any column-bearing line from SHOW CREATE TABLE
        NTÚfullFzUnknown column definition %rz-Incomplete reflection of column definition %rrG   ZcoltypeÚargz*Did not recognize type '%s' of column '%s'rN   r   ú'éÿÿÿÿc                 S   s   g | ]}t |ƒ‘qS r   )Úint)r8   Úvr   r   r   r:   Ë   s     z<MySQLTableDefinitionParser._parse_column.<locals>.<listcomp>Zfsp)ZunsignedZzerofill)r$   ZcollateZretrieve_as_bitwiseÚnullableZnotnullúNOT NULLZautoincrZautoincrementÚdefaultÚNULLÚcommentú\\ú\ú'')rG   Útypera   rc   )Ú
_re_columnr>   r?   Ú_re_column_looser   r-   r   Zischema_namesÚKeyErrorÚsqltypesZNullTypeÚ_re_csv_strÚfindallÚ_re_csv_intÚ
issubclassr   r   r   rT   Úgetr   Z_strip_valuesr   ZIntegerÚreplaceÚdictÚupdater   r.   )r   r0   r/   r2   rE   rG   r1   ÚargsÚcol_typeZ	type_argsZtype_kwÚkwZtype_instanceZcol_kwra   rc   Zcol_dr   r   r   r)   £   s€    

ÿ




   ÿ
z(MySQLTableDefinitionParser._parse_columnc           
         s  g }|D ]ä‰ ‡ fdd„dD ƒ\}}}}}dg}	|	  | j |¡¡ |	  |¡ |sX|	  d¡ |rÎd|krfnh| d¡r| d¡r|	  d	¡ |	  |¡ n>|d
kr®|	  d	¡ |	  |¡ n |	  d	¡ |	  d| dd¡ ¡ |rÜ|	  |¡ |  d |	¡¡ qd d| j |¡ d |¡dg¡S )až  Re-format DESCRIBE output as a SHOW CREATE TABLE string.

        DESCRIBE is a much simpler reflection and is sufficient for
        reflecting views for runtime use.  This method formats DDL
        for columns only- keys are omitted.

        :param columns: A sequence of DESCRIBE or SHOW COLUMNS 6-tuples.
          SHOW FULL COLUMNS FROM rows must be rearranged for use with
          this function.
        c                    s   g | ]}ˆ | ‘qS r   r   )r8   Úi©Úrowr   r   r:     s    zBMySQLTableDefinitionParser._describe_to_create.<locals>.<listcomp>)r   r   é   é   é   ú r`   rO   Ú	timestampÚCÚDEFAULTrb   z'%s'r[   rf   rN   zCREATE TABLE %s (
z,
z
) )r.   r   Zquote_identifierr'   rq   Újoin)
r   r   r   ÚbufferrG   ru   r_   ra   Úextrar0   r   rx   r   Ú_describe_to_create  sD    
ÿ

ÿ




ÿúÿz.MySQLTableDefinitionParser._describe_to_createc                 C   s   | j  |¡S )z8Unpack '"col"(2),"col" ASC'-ish strings into components.)Ú_re_keyexprsrm   )r   Zidentifiersr   r   r   r@   7  s    z*MySQLTableDefinitionParser._parse_keyexprsc              	   C   s.  g | _ g | _| jj}ttddd„ | jj|| j |¡fD ƒƒƒ}td| | jj	ƒ| _
td| ƒ| _tdƒ| _tdƒ| _td| ƒ| _td	| ƒ| _td
| ƒ| _tdƒ| _| ¡ }d|d< td| ƒ| _td| ƒ| _tdƒ| _tD ]}|  |¡ qâdD ]}|  |¡ qö|  dd¡ |  dd¡ |  dd¡ dS )z Pre-compile regular expressions.)ZiqZfqZesc_fqc                 S   s   g | ]}t  |¡‘qS r   )r%   Úescape)r8   Úsr   r   r   r:   G  s   ÿz<MySQLTableDefinitionParser._prep_regexes.<locals>.<listcomp>zM^CREATE (?:\w+ +)?TABLE +%(iq)s(?P<name>(?:%(esc_fq)s|[^%(fq)s])+)%(fq)s +\($zW(?:(?:%(iq)s((?:%(esc_fq)s|[^%(fq)s])+)%(fq)s)(?:\((\d+)\))?(?: +(ASC|DESC))?(?=\,|$))+z\x27(?:\x27\x27|[^\x27])*\x27z\d+a#    %(iq)s(?P<name>(?:%(esc_fq)s|[^%(fq)s])+)%(fq)s +(?P<coltype>\w+)(?:\((?P<arg>(?:\d+|\d+,\d+|(?:'(?:''|[^'])*',?)+))\))?(?: +(?P<unsigned>UNSIGNED))?(?: +(?P<zerofill>ZEROFILL))?(?: +CHARACTER SET +(?P<charset>[\w_]+))?(?: +COLLATE +(?P<collate>[\w_]+))?(?: +(?P<notnull>(?:NOT )?NULL))?(?: +DEFAULT +(?P<default>(?:NULL|'(?:''|[^'])*'|[\w\(\)]+(?: +ON UPDATE [\w\(\)]+)?)))?(?: +(?P<autoincr>AUTO_INCREMENT))?(?: +COMMENT +'(?P<comment>(?:''|[^'])*)')?(?: +COLUMN_FORMAT +(?P<colfmt>\w+))?(?: +STORAGE +(?P<storage>\w+))?(?: +(?P<extra>.*))?,?$zŸ  %(iq)s(?P<name>(?:%(esc_fq)s|[^%(fq)s])+)%(fq)s +(?P<coltype>\w+)(?:\((?P<arg>(?:\d+|\d+,\d+|\x27(?:\x27\x27|[^\x27])+\x27))\))?.*?(?P<notnull>(?:NOT )NULL)?aX    (?:(?P<type>\S+) )?KEY(?: +%(iq)s(?P<name>(?:%(esc_fq)s|[^%(fq)s])+)%(fq)s)?(?: +USING +(?P<using_pre>\S+))? +\((?P<columns>.+?)\)(?: +USING +(?P<using_post>\S+))?(?: +KEY_BLOCK_SIZE *[ =]? *(?P<keyblock>\S+))?(?: +WITH PARSER +(?P<parser>\S+))?(?: +COMMENT +(?P<comment>(\x27\x27|\x27([^\x27])*?\x27)+))?(?: +/\*(?P<version_sql>.+)\*/ +)?,?$z+\!\d+ (?: *WITH PARSER +(?P<parser>\S+) *)?z"RESTRICT|CASCADE|SET NULL|NOACTIONÚona,    CONSTRAINT +%(iq)s(?P<name>(?:%(esc_fq)s|[^%(fq)s])+)%(fq)s +FOREIGN KEY +\((?P<local>[^\)]+?)\) REFERENCES +(?P<table>%(iq)s[^%(fq)s]+%(fq)s(?:\.%(iq)s[^%(fq)s]+%(fq)s)?) +\((?P<foreign>[^\)]+?)\)(?: +(?P<match>MATCH \w+))?(?: +ON DELETE (?P<ondelete>%(on)s))?(?: +ON UPDATE (?P<onupdate>%(on)s))?z[  CONSTRAINT +%(iq)s(?P<name>(?:%(esc_fq)s|[^%(fq)s])+)%(fq)s +CHECK +\((?P<sqltext>.+)\),?z(?:.*)(?:SUB)?PARTITION(?:.*))ZENGINEZTYPEZAUTO_INCREMENTZAVG_ROW_LENGTHzCHARACTER SETzDEFAULT CHARSETZCHECKSUMZCOLLATEZDELAY_KEY_WRITEZINSERT_METHODZMAX_ROWSZMIN_ROWSZ	PACK_KEYSZ
ROW_FORMATZKEY_BLOCK_SIZEZUNIONz
\([^\)]+\)Z
TABLESPACEz.*? STORAGE DISKZ	RAID_TYPEz4\w+\s+RAID_CHUNKS\s*\=\s*\w+RAID_CHUNKSIZE\s*=\s*\w+N)Z_re_columnsrP   r   Zfinal_quoterr   Úzipr(   Z_escape_identifierÚ_pr_compileZ_unescape_identifierrH   Ú_re_compiler…   rl   rn   rh   ri   r=   rA   ÚcopyrB   rC   rD   Ú_options_of_type_stringÚ_add_option_stringÚ_add_option_wordÚ_add_option_regex)r   Z_finalÚquotesrv   Úoptionr   r   r   r   <  sˆ    
ýþþÿÿýþÿ

íÿüÿ
öÿÿ

öÿüÿ
þz(MySQLTableDefinitionParser._prep_regexesz(?:\s*(?:=\s*)|\s+)c                 C   s.   dt  |¡| jf }| j t|dd„ ƒ¡ d S )Nz0(?P<directive>%s)%s'(?P<val>(?:[^']|'')*?)'(?!')c                 S   s   |   dd¡  dd¡S )Nrd   re   rf   r[   )rq   )r^   r   r   r   Ú<lambda>ó  ó    z?MySQLTableDefinitionParser._add_option_string.<locals>.<lambda>©r%   r†   Ú_optional_equalsrP   r.   rŠ   ©r   rL   rJ   r   r   r   rŽ   ì  s    þ ÿÿz-MySQLTableDefinitionParser._add_option_stringc                 C   s(   dt  |¡| jf }| j t|ƒ¡ d S )Nz(?P<directive>%s)%s(?P<val>\w+)r•   r—   r   r   r   r   ÷  s
    þz+MySQLTableDefinitionParser._add_option_wordc                 C   s*   dt  |¡| j|f }| j t|ƒ¡ d S )Nz(?P<directive>%s)%s(?P<val>%s)r•   r—   r   r   r   r   þ  s    ýz,MySQLTableDefinitionParser._add_option_regexN)r   r   r   r   r   r3   r,   r+   r*   r)   r„   r@   r   r–   rŽ   r   r   r   r   r   r   r       s    2_5 /r   )ÚCOMMENTzDATA DIRECTORYzINDEX DIRECTORYZPASSWORDZ
CONNECTIONc                 C   s   t | ƒ|fS )z1Prepare a 2-tuple of compiled regex and callable.)r‹   )rJ   rK   r   r   r   rŠ     s    rŠ   c                 C   s   t  | t jt jB ¡S )z)Compile a string to regex, I and UNICODE.)r%   ÚcompileÚIÚUNICODE)rJ   r   r   r   r‹     s    r‹   )N)r%   Z
enumeratedr   r   r
   r   r   r   rN   r	   rk   r   Úobjectr   Zclass_loggerr   r   rŠ   r‹   r   r   r   r   Ú<module>   s"      i	
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