ó ;c›]c@`sÉdZddlmZmZmZddlZddlZddlmZddl Z ddl Z ddl Z ddl m Z mZmZmZejdfkr«eZnyddlmZWnek rŲeZnXd ZdZdZd Zd Zd Zd ddfZdZidd6dd6dd6dd6dd6dd6dd6dd 6d!d"6d#d$6d%d&6d'd(6d)d*6d+d,6d-d.6d/d06d1d26d3d46d5d66Z d7e!fd8„ƒYZ"d9„Z#d:„Z$dS(;sx Definition of the Request object, which acts as a kind of bridge between what the user wants and what the plugins can. i(tabsolute_importtprint_functiontdivisionN(tBytesIOi(t string_typest binary_typeturlopentget_remote_filei(tPathiiiiss ss%Image of the astronaut Eileen Collinss astronaut.pngs)Classic grayscale image of a photographers camera.pngs&Black and white image of a chekerboardscheckerboard.pngs7Photo of a clock with motion blur (Stefan van der Walt)s clock.pngs*Image of a cup of coffee (Rachel Michetti)s coffee.pngsImage of Stefan's cats chelsea.pngsImage of Almar's cats wikkie.pngs&Image showing greek coins from Pompeiis coins.pngs8Image showing the silhouette of a horse (Andreas Preuss)s horse.pngs+Photograph taken by Hubble telescope (NASA)shubble_deep_field.pngs"Immunohistochemical (IHC) stainingsimmunohistochemistry.pngs2Image showing a portion of the surface of the moonsmoon.pngsA scanned page of textspage.pngsA photograph of handdrawn textstext.pngs*The chelsea.png in a zipfile (for testing)s chelsea.zips+The chelsea.png in a BSDF file(for testing)s chelsea.bsdfs!Animated GIF of a newton's cradlesnewtonscradle.gifsVideo file of a cockatoos cockatoo.mp4s2Volumetric image showing a stented abdominal aortas stent.npztRequestcB`s›eZdZd„Zd„Zed„ƒZed„ƒZed„ƒZed„ƒZ d„Z d„Z d „Z d „Z ed „ƒZd d „ZRS(sR Request(uri, mode, **kwargs) Represents a request for reading or saving an image resource. This object wraps information to that request and acts as an interface for the plugins to several resources; it allows the user to read from filenames, files, http, zipfiles, raw bytes, etc., but offer a simple interface to the plugins via ``get_file()`` and ``get_local_filename()``. For each read/write operation a single Request instance is used and passed to the can_read/can_write method of a format, and subsequently to the Reader/Writer class. This allows rudimentary passing of information between different formats and between a format and associated reader/writer. parameters ---------- uri : {str, bytes, file} The resource to load the image from. mode : str The first character is "r" or "w", indicating a read or write request. The second character is used to indicate the kind of data: "i" for an image, "I" for multiple images, "v" for a volume, "V" for multiple volumes, "?" for don't care. cK`sfd|_d|_d|_||_d|_d|_d|_d|_d|_ t |_ d|_ d|_ ||_t|tƒs“tdƒ‚nt|ƒdks“tdƒ‚n|ddkrÓtdƒ‚n|ddkrņtd ƒ‚n|j|ƒ|jdk rb|j}|jjdƒr?|jdƒd}nd|jdƒdjƒ|_ndS(Ns&Request requires mode must be a stringis'Request requires mode to have two charsitrws)Request requires mode[0] to be "r" or "w"isiIvV?s)Request requires mode[1] to be in "iIvV?"shttp://shttps://sftp://sftps://t?t.i’’’’(shttp://shttps://sftp://sftps://(tNonet _uri_typet _filenamet _extensiont_kwargst_resultt _filename_zipt_bytest_zipfilet_filetFalset_file_is_localt_filename_localt _firstbytest_modet isinstanceRt ValueErrortlent _parse_urit startswithtsplittlower(tselfturitmodetkwargstext((s3lib/python2.7/site-packages/imageio/core/request.pyt__init__[s6               cC`s½tjddk}|jddk}|jddk}t|tƒrŹ|jdƒr|rltdƒ‚n|jddƒd jƒ}|j d ƒ\}}}|r³|d 7}n|t krŅt d |ƒ‚nt |_ td |dtƒ|_|rĒ|jd|7_qĒqö|jdƒs1|jdƒrFt|_ ||_qö|jdƒsd|jdƒryt|_ ||_qö|jdƒr”t |_ |d|_qö|jtƒrĖ|rĖt|_ ||_qö|jtƒrõ|rõt|_ ||_qö|rt |_ ||_qöytjj|ƒ}Wntk r?t}nX|r[t |_ ||_qöt|ƒdkr‚t |_ ||_qöt|tƒrµ|rµt|_ d|_||_qöt |_ ||_n,t|tƒr|rt|_ d|_|jƒ|_nót|tƒr6|r6t|_ d|_||_nĄt d(k rlt|t ƒrlt |_ t"|ƒ|_nŠ|r±t#|dƒröt#|dƒröt$|_ d|_||_%qönE|röt#|dƒröt#|dƒröt$|_ d|_||_%qön|j t kr2|jjdƒr2tjj&|jƒ|_n|j t kr¼xxd dgD]g} |jjƒj'| ƒ} | dkrN| d7} t(|_ |j| |j| j)dƒf|_*PqNqNWn|j d(kr t+|ƒ} t| ƒd krś| d! d"} nt,d#| ƒ‚nttg} |r=|j | kr=t,d$ƒ‚n|rµ|j t t(gkrµ|j}|j*rz|j*d}ntjj-|ƒ rµ|t krµt,d%||fƒ‚qµn|j t t(gkr|j*r’tjj.|j*dƒ|j*df|_*qtjj.|jƒ|_n|j t t(gkr¹|j}|j*rQ|j*d}n|rtjj-|ƒs¶t/d&|ƒ‚q¶q¹tjj0|ƒ} tjj-| ƒs¹t/d'| ƒ‚q¹nd(S()s. Try to figure our what we were given iitrtwsimageio:s$Cannot write to the standard images.t:ii’’’’s.zip/s.zipsUnknown standard image %r.simages/tautot/shttp://shttps://sftp://sftps://sfile://iistreadtclosestwritet~s.zip\is/\i<i9s...s Cannot understand given URI: %s.s-imageio does not support writing to http/ftp.s‘No such file: %r. This file looks like one of the standard images, but from imageio 2.1, standard images have to be specified using "imageio:%s".sNo such file: '%s'sThe directory %r does not existN(1tsyst version_infoR%RRR t RuntimeErrorR!R"t partitiontEXAMPLE_IMAGESRt URI_FILENAMERRtTrueRtURI_HTTPtURI_FTPtSPECIAL_READ_URISt URI_BYTESt RETURN_BYTEStostpathtisfilet ExceptionRRRRt memoryviewttobytesRR tstrthasattrtURI_FILERt expandusertfindt URI_ZIPPEDtlstripRtreprtIOErrortexiststabspathtFileNotFoundErrortdirname(R#R$tpy3ktis_read_requesttis_write_requesttfnt_tzip_partR@tneedletzip_ituri_rt noWritingtdn((s3lib/python2.7/site-packages/imageio/core/request.pyR‡sä                                   !            cC`s|jS(s The uri for which reading/saving was requested. This can be a filename, an http address, or other resource identifier. Do not rely on the filename to obtain the data, but use ``get_file()`` or ``get_local_filename()`` instead. (R(R#((s3lib/python2.7/site-packages/imageio/core/request.pytfilenamescC`s|jS(s„ The (lowercase) extension of the requested filename. Suffixes in url's are stripped. Can be None if the request is not based on a filename. (R(R#((s3lib/python2.7/site-packages/imageio/core/request.pyt extension&scC`s|jS(s/ The mode of the request. The first character is "r" or "w", indicating a read or write request. The second character is used to indicate the kind of data: "i" for an image, "I" for multiple images, "v" for a volume, "V" for multiple volumes, "?" for don't care. (R(R#((s3lib/python2.7/site-packages/imageio/core/request.pyR%.scC`s|jS(s= The dict of keyword arguments supplied by the user. (R(R#((s3lib/python2.7/site-packages/imageio/core/request.pyR&8scC`s}|jddk}|jdk r)|jS|jtkrk|rVtƒ|_t|_qvt|jƒ|_n |jt kr°|r˜t |j dƒ|_qvt |j dƒ|_nĘ|jt kr)|j \}}|rģtƒ|_t|_qvtj|dƒ|_|jj |dƒ|_t|jƒnM|jtp8tgkrv| sNt‚t|j ddƒ|_t|jƒn|jS( s¹ get_file() Get a file object for the resource associated with this request. If this is a reading request, the file is in read mode, otherwise in write mode. This method is not thread safe. Plugins should not close the file when done. This is the preferred way to read/write the data. But if a format cannot handle file-like objects, they should use ``get_local_filename()``. iR*twbtrbR)ttimeoutiN(R%RR RR<RR8RRR7topenR\RIRtzipfiletZipFileRt#make_file_object_support_noop_seeksR9R:tAssertionErrorR(R#t want_to_writeR\tname((s3lib/python2.7/site-packages/imageio/core/request.pytget_file@s2      cC`sŌ|jtkr|jS|jttfkrTtjj|jjdƒdƒd}ntjj|jƒd}t j |dƒ|_ |j ddkrÉt |j dƒ}tj|jƒ|ƒWdQXn|j SdS(sō get_local_filename() If the filename is an existing file on this filesystem, return that. Otherwise a temporary file is created on the local file system which can be used by the format to read from or write to. R iitimageio_R)R^N(RR7RR9R:R>R?tsplitextR!ttempfiletmktempRR%Ratshutilt copyfileobjRh(R#R'tfile((s3lib/python2.7/site-packages/imageio/core/request.pytget_local_filenameus)cC`sŸ|jddkrd}|jrLt|jdƒ}|jƒ}WdQXn|jrg|jjƒ}n|dk r|jt krŽ||_ q’|jt kr°|jj |ƒq’|jt kr’tj|jddƒ}|j|jd|ƒ|jƒq’qn|jr3|jt kr3|jjƒd|_n|jrU|jjƒd|_n|jr’ytj|jƒWntk r…nXd|_nd|_dS(s® finish() For internal use (called when the context of the reader/writer exits). Finishes this request. Close open files and process results. iR*R_Ntai(R%R RRaR.RRtgetvalueRR<RRFR0RIRbRcRtwritestrR/RR>tremoveRAR(R#tbytesRotzf((s3lib/python2.7/site-packages/imageio/core/request.pytfinish‹s:            cC`sd|j|_}|S(sŠ For internal use. In some situations a write action can have a result (bytes data). That is obtained with this function. N(R R(R#tres((s3lib/python2.7/site-packages/imageio/core/request.pyt get_result¼scC`s#|jdkr|jƒn|jS(sv The first 256 bytes of the file. These can be used to parse the header to determine the file-format. N(RR t_read_first_bytes(R#((s3lib/python2.7/site-packages/imageio/core/request.pyt firstbytesĆs icC`s|jdk r"|j| |_nļy|jƒ}Wn9tk rmtjj|jƒrgt ƒ|_dS‚nXy|j ƒ}Wnt k r—d}nXt ||ƒ|_y,|dkrČt dƒ‚n|j |ƒWn8t k rd|_|jtkrtdƒ‚qnXdS(Nscannot seek with Nones*Cannot seek back after getting firstbytes!(RR RRhRLR>R?tisdirR\RttellRAt read_n_bytestseekRRRF(R#tNtfti((s3lib/python2.7/site-packages/imageio/core/request.pyRzĢs,       (t__name__t __module__t__doc__R(RtpropertyR\R]R%R&RhRpRwRyR{Rz(((s3lib/python2.7/site-packages/imageio/core/request.pyR @s , –   5  1  cC`sStƒ}xCt|ƒ|krN|j|t|ƒƒ}|sAPn||7}q W|S(s” read_n_bytes(file, n) Read n bytes from the given file, or less if the file has less bytes. Returns zero bytes if the file is closed. (RRR.(RR€tbbt extra_bytes((s3lib/python2.7/site-packages/imageio/core/request.pyR~ės c`s”dg‰d‡‡fd†}‡fd†}d‡‡fd†}dd„}|j‰t|dƒro|jn|‰||_||_||_dS(s“This fixes up an HTTPResponse object so that it can tell(), and also seek() will work if its effectively a no-op. This allows tools like Pillow to use the file object. ic`s&ˆ|ƒ}ˆdct|ƒ7<|S(Ni(R(tnRx(tcounttori_read(s3lib/python2.7/site-packages/imageio/core/request.pyR.s c`sˆdS(Ni(((RŠ(s3lib/python2.7/site-packages/imageio/core/request.pyR}sc`s0|dko|ˆdks,ˆ||ƒndS(Ni((R‚R%(RŠtori_seek(s3lib/python2.7/site-packages/imageio/core/request.pyR scS`stdƒ‚dS(NsNo seeking allowed!(R4(R‚R%((s3lib/python2.7/site-packages/imageio/core/request.pyt fail_seek sRN(R R.RERR}(RR.R}RR((RŠR‹RŒs3lib/python2.7/site-packages/imageio/core/request.pyRdśs     (%R…t __future__RRRR2R>tioRRbRkRmtcoreRRRRR3tOSErrorROtpathlibRt ImportErrorR R<RFR7RIR9R:R;R=R6tobjectR R~Rd(((s3lib/python2.7/site-packages/imageio/core/request.pyts\     "    ’¬