U ڲg%@sdZddlZddlZddlmZddlmZddlmZddl m Z ddl m Z ddl m Z dd lmZdd 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)parse_header_parameters) renderers) ParseError) api_settings)jsonc@seZdZddZdS) DataAndFilescCs||_||_dS)N)datafiles)selfrrr:/tmp/pip-unpacked-wheel-11h17kvo/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__rrrrrrr src@s*eZdZdZdZejZej Z dddZ dS) JSONParserz& Parses JSON-serialized data. zapplication/jsonNc Cs||pi}|dtj}z.t||}|jr2tjnd}tj||dWSt k rv}zt dt |W5d}~XYnXdS)zX Parses the incoming bytestream as JSON and returns the resulting data. encodingN)parse_constantzJSON parse error - %s) getrDEFAULT_CHARSETcodecs getreaderstrictr Zstrict_constantload ValueErrorr str)rrrrr Zdecoded_streamr!excrrrr8szJSONParser.parse)NN) rrrrrr Z JSONRendererZrenderer_classr Z STRICT_JSONr&rrrrrr0s 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 rrrrMszFormParser.parse)NNrrrrrr+Gsr+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 k r} zt dt | W5d} ~ XYnXdS)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)) rrrrr-r metar1parserrrr*rrrr]s   zMultiPartParser.parse)NNrrrrrrWsrc@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 fk rd } YnX|D]4} | ||| d |} | d k rt id | d iSqd d|D} t dg| }t||}d gt|}t|D]P\}} z| d || | |Wn.tk rZ|d |d }Yq`YnXq|D]R}t|D]B\}} t|}| |||}|||7<|d krpqdqpqdt|D]4\}} | ||}|d k rt 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. r-r r7ZHTTP_CONTENT_TYPEr.ZHTTP_CONTENT_LENGTHCONTENT_LENGTHrNfilecSsg|]}|jr|jqSr) chunk_size).0xrrr sz*FileUploadParser.parse..ir6)r"rr#r/r1 get_filenamer errorsintr( TypeErrorZhandle_raw_inputr minrlen enumerateZnew_filerZreceive_data_chunkZ file_complete)rrrrr-r r3r1filename content_typecontent_lengthhandlerresultZpossible_sizesr<chunksZcountersindexchunkZ chunk_lengthZfile_objrrrr~sf       zFileUploadParser.parsec Cstt|ddW5QRSQRXttttL|dj}t|d\}}d|krp|dW5QRS|dW5QRSQRXdS)z Detects the uploaded file name. First searches a 'filename' url kwarg. Then tries to parse Content-Disposition header. kwargsrGr-ZHTTP_CONTENT_DISPOSITIONz filename*N) contextlibsuppressKeyErrorAttributeErrorr(r/r)rrrrr3 dispositionparamsrrrr@s  zFileUploadParser.get_filename)NN)rrrrrrArr@rrrrr5ts Cr5)rr$rPZ django.confrZdjango.core.files.uploadhandlerrZ django.httprZdjango.http.multipartparserrrr2rZdjango.utils.httprZrest_frameworkr Zrest_framework.exceptionsr Zrest_framework.settingsr Zrest_framework.utilsr r rrr+r5rrrrs&