a SicD@sdZddlZddlmZddlmZddlmZddlm Z ddlm Z ddlm Z dd l mZdd lmZdd lmZdd lmZdd lmZGdddZGdddZGdddeZGdddeZGdddeZ GdddeZdS)z Parsers are used to parse the content of incoming HTTP requests. They give us a generic way of being able to handle various media types on the request, such as form content or json encoded data. N)settings)StopFutureHandlers) QueryDict) ChunkIter)MultiPartParser)MultiPartParserError) renderers)parse_header_parameters) ParseError) api_settings)jsonc@seZdZddZdS) DataAndFilescCs||_||_dS)N)datafiles)selfrrrR/var/www/html/django/DPS/env/lib/python3.9/site-packages/rest_framework/parsers.py__init__szDataAndFiles.__init__N)__name__ __module__ __qualname__rrrrrr sr c@seZdZdZdZdddZdS) BaseParserz All parsers should extend `BaseParser`, specifying a `media_type` attribute, and overriding the `.parse()` method. NcCs tddS)z Given a stream to read from, return the parsed representation. Should return parsed data, or a `DataAndFiles` object consisting of the parsed data and files. z.parse() must be overridden.N)NotImplementedError)rstream media_typeparser_contextrrrparse%szBaseParser.parse)NNrrr__doc__rrrrrrrsrc@s*eZdZdZdZejZej Z dddZ dS) JSONParserz& Parses JSON-serialized data. zapplication/jsonNc Cs~|pi}|dtj}z.t||}|jr2tjnd}tj||dWSt yx}zt dt |WYd}~n d}~00dS)zX Parses the incoming bytestream as JSON and returns the resulting data. encodingN)parse_constantzJSON parse error - %s) getrDEFAULT_CHARSETcodecs getreaderstrictr strict_constantload ValueErrorr str)rrrrr Zdecoded_streamr!excrrrr6szJSONParser.parse)NN) rrrrrr JSONRendererrenderer_classr STRICT_JSONr&rrrrrr.s rc@seZdZdZdZdddZdS) FormParserz Parser for form data. z!application/x-www-form-urlencodedNcCs&|pi}|dtj}t||dS)zt Parses the incoming bytestream as a URL encoded form, and returns the resulting QueryDict. r )r )r"rr#rread)rrrrr rrrrKszFormParser.parse)NNrrrrrr/Esr/c@seZdZdZdZdddZdS)rzF Parser for multipart form data, which may include file data. zmultipart/form-dataNc Cs|pi}|d}|dtj}|j}||d<|j}z&t||||}|\} } t| | WSt y} zt dt | WYd} ~ n d} ~ 00dS)a  Parses the incoming bytestream as a multipart encoded form, and returns a DataAndFiles object. `.data` will be a `QueryDict` containing all the form parameters. `.files` will be a `QueryDict` containing all the form files. requestr CONTENT_TYPEzMultipart form parse error - %sN) r"rr#METAcopyupload_handlersDjangoMultiPartParserrr rr r*) rrrrr1r metar5parserrrr+rrrr[s   zMultiPartParser.parse)NNrrrrrrUsrc@s0eZdZdZdZdddZd ddZd d ZdS) FileUploadParserz& Parser for file upload data. z*/*zFFileUpload parse error - none of upload handlers can handle the streamz`Missing filename. Request should include a Content-Disposition header with a filename parameter.) unhandled no_filenameNc Cs|pi}|d}|dtj}|j}|j}||||}|sJt|jd|d|dd} zt|d|dd } Wnt t fyd } Yn0|D]4} | ||| d |} | d urt id | d iSqd d|D} t dg| }t||}d gt|}t|D]N\}} z| d || | |Wn,tyV|d |d }Yq\Yn0q |D]R}t|D]B\}} t|}| |||}|||7<|d urlq`qlq`t|D]4\}} | ||}|d urt id |iSqt|jdd S)a Treats the incoming bytestream as a raw file upload and returns a `DataAndFiles` object. `.data` will be None (we expect request body to be a file content). `.files` will be a `QueryDict` containing one 'file' element. r1r r;HTTP_CONTENT_TYPEr2HTTP_CONTENT_LENGTHCONTENT_LENGTHrNfilecSsg|]}|jr|jqSr) chunk_size).0xrrr z*FileUploadParser.parse..ir:)r"rr#r3r5 get_filenamer errorsintr) TypeErrorhandle_raw_inputr minrlen enumeratenew_filerreceive_data_chunk file_complete)rrrrr1r r7r5filename content_typecontent_lengthhandlerresultpossible_sizesrBchunkscountersindexchunk chunk_lengthfile_objrrrr|sd       zFileUploadParser.parsec Cszz|ddWSty Yn0z:|dj}t|d\}}d|vrP|dWS|dWSWntttfytYn0dS)z Detects the uploaded file name. First searches a 'filename' url kwarg. Then tries to parse Content-Disposition header. kwargsrRr1ZHTTP_CONTENT_DISPOSITIONz filename*N)KeyErrorr3r AttributeErrorr))rrrrr7 dispositionparamsrrrrGs   zFileUploadParser.get_filename)NN)rrrrrrHrrGrrrrr9rs Cr9)rr$ django.confrZdjango.core.files.uploadhandlerr django.httprdjango.http.multipartparserrrr6rrest_frameworkrrest_framework.compatr Zrest_framework.exceptionsr rest_framework.settingsr rest_framework.utilsr r rrr/r9rrrrs$