3 =^@!@sdZddlmZddlZddlmZddlmZddlm Z ddl m Z ddl m Z dd l mZmZdd lmZdd lmZdd lmZdd lmZddlmZddlmZddlmZGdddeZ GdddeZ!Gddde!Z"Gddde!Z#Gddde!Z Gddde!Z$dS)z Parsers are used to parse the content of incoming HTTP requests. They give us a generic way of being able to handle various media types on the request, such as form content or json encoded data. )unicode_literalsN)settings)StopFutureHandlers) QueryDict) ChunkIter)MultiPartParser)MultiPartParserError parse_header)six) force_text)parse) renderers) ParseError) api_settings)jsonc@seZdZddZdS) DataAndFilescCs||_||_dS)N)datafiles)selfrrrE/tmp/pip-build-8app2_gc/djangorestframework/rest_framework/parsers.py__init__szDataAndFiles.__init__N)__name__ __module__ __qualname__rrrrrrsrc@seZdZdZdZdddZdS) BaseParserz All parsers should extend `BaseParser`, specifying a `media_type` attribute, and overriding the `.parse()` method. NcCs tddS)z Given a stream to read from, return the parsed representation. Should return parsed data, or a `DataAndFiles` object consisting of the parsed data and files. z.parse() must be overridden.N)NotImplementedError)rstream media_typeparser_contextrrrr )szBaseParser.parse)NN)rrr__doc__rr rrrrr"src@s*eZdZdZdZejZej Z dddZ dS) JSONParserz& Parses JSON-serialized data. zapplication/jsonNcCs||pi}|jdtj}y,tj||}|jr2tjnd}tj||dSt k rv}zt dt j |WYdd}~XnXdS)zX Parses the incoming bytestream as JSON and returns the resulting data. encodingN)parse_constantzJSON parse error - %s) getrDEFAULT_CHARSETcodecs getreaderstrictrZstrict_constantload ValueErrorrr text_type)rrrrr"Zdecoded_streamr#excrrrr :szJSONParser.parse)NN) rrrr rr Z JSONRendererZrenderer_classrZ STRICT_JSONr(r rrrrr!2s r!c@seZdZdZdZdddZdS) FormParserz Parser for form data. z!application/x-www-form-urlencodedNcCs*|pi}|jdtj}t|j|d}|S)zt Parses the incoming bytestream as a URL encoded form, and returns the resulting QueryDict. r")r")r$rr%rread)rrrrr"rrrrr OszFormParser.parse)NN)rrrr rr rrrrr-Isr-c@seZdZdZdZdddZdS)rzF Parser for multipart form data, which may include file data. zmultipart/form-dataNc Cs|pi}|d}|jdtj}|jj}||d<|j}y$t||||}|j\} } t| | St k r} zt dt j | WYdd} ~ XnXdS)a  Parses the incoming bytestream as a multipart encoded form, and returns a DataAndFiles object. `.data` will be a `QueryDict` containing all the form parameters. `.files` will be a `QueryDict` containing all the form files. requestr" CONTENT_TYPEzMultipart form parse error - %sN) r$rr%METAcopyupload_handlersDjangoMultiPartParserr rrrr r+) rrrrr/r"metar3parserrrr,rrrr `s   zMultiPartParser.parse)NN)rrrr rr rrrrrZsrc@s8eZdZdZdZdddZd ddZd d Zd 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_filenameNcCs |pi}|d}|jdtj}|j}|j}|j|||}|sJt|jd|jd|jdd} yt|jd|jdd } Wnt t fk rd } YnXx8|D]0} | j ||| d |} | d k rt id | d iSqWd d|D} t dg| }t||}d gt|}xVt|D]J\}} y| jd || | |Wn(tk rV|d |d }PYnXqWxZ|D]R}xJt|D]>\}} t|}| j|||}|||7<|d krrPqrWqdWxsz*FileUploadParser.parse..r8li)r$rr%r1r3 get_filenamererrorsintr* TypeErrorZhandle_raw_inputrminrlen enumerateZnew_filerZreceive_data_chunkZ file_complete)rrrrr/r"r5r3filename content_typecontent_lengthhandlerresultZpossible_sizesr>chunksZcountersindexchunkZ chunk_lengthZfile_objrrrr s\        zFileUploadParser.parsecCsy |ddStk r YnXyB|dj}t|djd}|d}d|krZ|j|St|dStttfk r~YnXdS) z Detects the uploaded file name. First searches a 'filename' url kwarg. Then tries to parse Content-Disposition header. kwargsrLr/ZHTTP_CONTENT_DISPOSITIONzutf-8r=z filename*N)KeyErrorr1r encodeget_encoded_filenamer AttributeErrorr*)rrrrr5 disposition filename_parmrrrrEs    zFileUploadParser.get_filenamec CsVt|d}y |jdd\}}}tj|}Wn$ttfk rPt|d}YnX|S)zw Handle encoded filenames per RFC6266. See also: https://tools.ietf.org/html/rfc2231#section-4 z filename*'rBrL)r spliturlparseunquoter* LookupError)rrZZencoded_filenamecharsetlangrLrrrrWs z%FileUploadParser.get_encoded_filename)NN) rrrr rrFr rErWrrrrr7ws Cr7)%r __future__rr&Z django.confrZdjango.core.files.uploadhandlerrZ django.httprZdjango.http.multipartparserrrr4rr Z django.utilsr Zdjango.utils.encodingr Zdjango.utils.six.moves.urllibr r]Zrest_frameworkr Zrest_framework.exceptionsrZrest_framework.settingsrZrest_framework.utilsrobjectrrr!r-r7rrrrs*