o jY @sdZddlmZddlmZddlmZddlmZddl m Z ddl m Z ddl mZmZdd lZdd lmZdd lZeeZGd d d eZd ZdZdddddddddd ZefddZGdddeZdZe eZ dZ!e e!Z"dZ#e e#Z$d Z%e e%Z&d!Z'e e'Z(Gd"d#d#eZ)Gd$d%d%e)Z*Gd&d'd'e)Z+Gd(d)d)Z,d*d+Z-d,d-Z.d.d/Z/ed0krdd l0Z0dd l1Z1e02e13j4d Sd S)1attLib/sfnt.py -- low-level module to deal with the sfnt file format. Defines two public classes: - SFNTReader - SFNTWriter (Normally you don't have to use these classes explicitly; they are used automatically by ttLib.TTFont.) The reading and writing of sfnt files is separated in two distinct classes, since whenever the number of tables changes or whenever a table's length changes you need to rewrite the whole file anyway. ) annotations)KeysView)BytesIO)SimpleNamespace)Tag)sstruct) TTLibErrorTTLibFileIsCollectionErrorN) OrderedDictc@sdeZdZddZdddZdd d ZeZdddZd ddZd!ddZ d"ddZ ddZ ddZ dS)# SFNTReadercOs^|r*|tur*|d}|dt|d}|d|dkr*ddlm}t|St|S)zmReturn an instance of the SFNTReader sub-class which is compatible with the input file type. rZwOF2) WOFF2Reader)r seekrreadfontTools.ttLib.woff2r object__new__)clsargskwargsinfile sfntVersionr rU/var/www/html/Deteccion_Ine/venv/lib/python3.10/site-packages/fontTools/ttLib/sfnt.pyr!s      zSFNTReader.__new__rc Cs||_||_d|_d|_t|_|jd|jd|_|jd|jdkrft |j}|j }d|kr9|ksBnt d|d||_ |j|j ||jt }t|t kr^tdtt||n:|jdkrd|_t|_|jt}t|tkrtd tt||n|jt }t|t krtd tt||t|j|_|jd vrtd i}t|jD]}|} | |jt| j} | || <qtt|d dd|_|jdkrt||_dSdS)Nrr sttcfz2specify a font number between 0 and %d (inclusive)'Not a Font Collection (not enough data)wOFFwoffz!Not a WOFF font (not enough data)z1Not a TrueType or OpenType font (not enough data))ZOTTOtruez1Not a TrueType or OpenType font (bad sfntVersion)cSs |djS)Nr)offset)irrr`s z%SFNTReader.__init__..)key) filecheckChecksumsflavor flavorDataSFNTDirectoryEntryDirectoryEntryrrr readTTCHeadernumFontsr offsetTablesfntDirectorySizelenrrunpacksfntDirectoryFormatWOFFDirectoryEntrywoffDirectorySizewoffDirectoryFormatrrange numTablesfromFiletagr sorteditemstablesWOFFFlavorData) selfr%r&Z fontNumberheaderr,datar;r"entryr8rrr__init__2s^                 zSFNTReader.__init__r8 str | bytesreturnboolcCs ||jvSNr;r=r8rrrhas_keyf zSFNTReader.has_key KeysView[Tag]cCs |jSrE)r;keysr=rrrrKkrIzSFNTReader.keysbytescCs|jt|}||j}|jrF|dkr%t|ddd|dd}nt|}|jdkr;||jks9Jd||S||jkrFtd||S)zFetch the raw table data.headN rzbad checksum for '%s' table) r;rloadDatar%r& calcChecksumcheckSumlogwarning)r=r8r@r?checksumrrr __getitem__ns "  zSFNTReader.__getitem__NonecCs|jt|=dSrE)r;rrGrrr __delitem__szSFNTReader.__delitem__cCs|jdSrE)r%closerLrrrr[zSFNTReader.closecCs@t|jtr |jS|j}|d=|jj|d<|j|d<|S)Nr% _filename_filepos) isinstancer%r__dict__copynametellr=staterrr __getstate__s   zSFNTReader.__getstate__cCs<d|vrt|dd|_|j|d|j|dS)Nr%r]rbr^)openpopr%rr`updaterdrrr __setstate__szSFNTReader.__setstate__N)rr)r8rBrCrD)rCrJ)r8rBrCrM)r8rBrCrY)rCrY) __name__ __module__ __qualname__rrArH __contains__rKrXrZr[rfrkrrrrr s  4     r FrrO 2d) rrqr rrrprO cCs`d|kr dksntd|tr|dkr"ddlm}|||Sddlm}||t|dS)aECompress 'data' to Zlib format. If 'USE_ZOPFLI' variable is True, zopfli is used instead of the zlib module. The compression 'level' must be between 0 and 9. 1 gives best speed, 9 gives best compression (0 gives no compression at all). The default value is a compromise between speed and compression (6). rrzzBad compression level: %s)compress)Z numiterations) ValueError USE_ZOPFLIzlibr{Z zopfli.zlib ZOPFLI_LEVELS)r?levelr{rrrr{s     r{c@s\eZdZddZ   dddZddZd d Zd d Zd dZddZ ddZ ddZ dS) SFNTWritercOsbd}|r d|vr |d}n |rt|dkr|d}|tur,|dkr,ddlm}t|St|S)zpReturn an instance of the SFNTWriter sub-class which is compatible with the specified 'flavor'. Nr'rqZwoff2r) WOFF2Writer)r/rrrrr)rrrr'rrrrrs     zSFNTWriter.__new__rNcCs||_||_t||_||_||_|jdkr*t|_t|_ t |_ d|_ t |t|_n$|jr4Jd|jt|_t |_ t|_ ddlm}||d\|_|_|_|j|_|j|j ||j j|_|j|j|jd|j|jt|_dS)NrZwOFFUnknown flavor '%s'rgetSearchRange)r%r6rrr'r(r4directoryFormatr3 directorySizer2r* signaturer.sfntDirectoryEntrySizeorigNextTableOffsetr1r)fontTools.ttLibr searchRange entrySelector rangeShiftrcdirectoryOffset formatSizenextTableOffsetrwriter r;)r=r%r6rr'r(rrrrrAs<       zSFNTWriter.__init__cCs$||jvr td|||j|<dS)Ncannot rewrite '%s' table)r;r)r=r8r@rrrsetEntry s  zSFNTWriter.setEntrycCs||jvr td||}||_|j|_|dkr2t|ddd|dd|_||_d|_ nt||_| |j ||j dkrS|j |_|j |jd d @7_ |j|jd d @|_|j d |j|j |j|j ksvJ|||dS) zWrite raw table data to disk.rrNNrOrPrQTrrqr)r;rr*r8rr!rSrT headTable uncompressedsaveDatar%r'r origOffset origLengthlengthrrcr)r=r8r?r@rrr __setitem__s$  "  zSFNTWriter.__setitem__cCs |j|SrErFrGrrrrX1rIzSFNTWriter.__getitem__c Cszt|j}t||jkrtd|jt|f|jdkrd|_d|_d|_ |j dt|7_ |D]\}}|j |j dd@7_ q4|j rK|j nt }|j d ura|jd ura|j |_ |j|_nt|d rvtd |jd d \|_ |_nd|_ |_|jrt|j|_|jdd|j|_t|j}t||_|j|n d|_|_|_|jr|jdd|j}|dd@}|jd|||j|_t|j|_|j|jnd|_|_|jdd|j|_n |jrJd|j t !|j"|}|j|j#|j$d} |D]\}}|dkrd} ||%}q| r.|&||j|j#|j|d S)zTAll tables must have been written to disk. Now write the directory. z-wrong number of tables; expected %d, found %drrrrQrrqrNrz>HHr rOrxrrrNr)'r9r;r:r/r6rr'rreservedZ totalSfntSizerr(r< majorVersion minorVersionhasattrstructr0rmetaDatametaOrigLengthr%rrc metaOffsetr{ metaLengthrprivData privOffset privLengthrrpackrrrtoStringwriteMasterChecksum) r=r;r8r@r?ZcompressedMetaDataoffZ paddedOff directoryZseenHeadrrrr[4sn                  zSFNTWriter.closec Csg}|jD] }||j|jq|jtkrWddlm}||jd\|_ |_ |_ t t|}t|j}|D]\}}t}|j|_|j|_|j|_|j|_||}q9tt|jt}|t|kshJ|t|t|d@} d| d@} | S)Nrrrl/ac)r;rKappendrTr*r)rrr6rrrrrr1r9r:r8rr!rrrr.r/rrSsum) r=rZ checksumsr8rr;r@Z sfntEntryZ directory_endrWchecksumadjustmentrrr_calcMasterChecksum{s.      zSFNTWriter._calcMasterChecksumcCs:||}|j|jdjd|jtd|dS)NrNrOz>L)rr%rr;r!rrr)r=rrrrrrs zSFNTWriter.writeMasterChecksumcCsdSNFrrLrrrreordersTableszSFNTWriter.reordersTables)rNN) rlrmrnrrArrrXr[rrrrrrrrs 1G ra > # big endian TTCTag: 4s # "ttcf" Version: L # 0x00010000 or 0x00020000 numFonts: L # number of fonts # OffsetTable[numFonts]: L # array with offsets from beginning of file # ulDsigTag: L # version 2.0 only # ulDsigLength: L # version 2.0 only # ulDsigOffset: L # version 2.0 only z > # big endian sfntVersion: 4s numTables: H # number of tables searchRange: H # (max2 <= numTables)*16 entrySelector: H # log2(max2 <= numTables) rangeShift: H # numTables*16-searchRange zc > # big endian tag: 4s checkSum: L offset: L length: L ab > # big endian signature: 4s # "wOFF" sfntVersion: 4s length: L # total woff file size numTables: H # number of tables reserved: H # set to 0 totalSfntSize: L # uncompressed size majorVersion: H # major version of WOFF file minorVersion: H # minor version of WOFF file metaOffset: L # offset to metadata block metaLength: L # length of compressed metadata metaOrigLength: L # length of uncompressed metadata privOffset: L # offset to private data block privLength: L # length of private data block z > # big endian tag: 4s offset: L length: L # compressed length origLength: L # original length checkSum: L # original checksum c@sTeZdZddZddZddZddZd d Zd d Zd dZ ddZ ddZ dS)r*cCs d|_dSr)rrLrrrrArIzDirectoryEntry.__init__cCst|j||j|dSrE)rr0formatrr)r=r%rrrr7szDirectoryEntry.fromFilecCst|j||dSrE)rr0r)r=strrrr fromStringszDirectoryEntry.fromStringcCst|j|SrE)rrrrLrrrrr\zDirectoryEntry.toStringcCs6t|drd|jj|jt|fSd|jjt|fS)Nr8z<%s '%s' at %x>z <%s at %x>)r __class__rlr8idrLrrr__repr__s zDirectoryEntry.__repr__cCsD||j||j}t||jksJt|jdr ||}|S)N decodeData)rr!rrr/rrrr=r%r?rrrrRs    zDirectoryEntry.loadDatacCs:t|jdr ||}t||_||j||dS)N encodeData)rrrr/rrr!rrrrrrs    zDirectoryEntry.saveDatacC|SrEr)r=rawDatarrrr rzDirectoryEntry.decodeDatacCrrEr)r=r?rrrr rzDirectoryEntry.encodeDataN) rlrmrnrAr7rrrrRrrrrrrrr*s r*c@seZdZeZeZdS)r)N)rlrmrnsfntDirectoryEntryFormatrrrrrrrr)sr)cs4eZdZeZeZfddZddZddZ Z S)r2cs&tt|ttdst|_dSdS)NzlibCompressionLevel)superr2rArZLIB_COMPRESSION_LEVELrrLrrrrAs  zWOFFDirectoryEntry.__init__cCsLddl}|j|jkr|}|S|j|jksJ||}t||jks$J|SNr)r~rr decompressr/)r=rr~r?rrrr%s  zWOFFDirectoryEntry.decodeDatacCsRt||_|jst||j}|jst||jkr |}|j|_|S|}t||_|SrE)r/rrr{rr)r=r?ZcompressedDatarrrrr0s   zWOFFDirectoryEntry.encodeData) rlrmrnwoffDirectoryEntryFormatrwoffDirectoryEntrySizerrArr __classcell__rrrrr2s    r2c@s"eZdZdZdddZddZdS)r<rNcCsd|_d|_d|_d|_|r`|j|_|j|_|jrA|j|j|j|j}t ||jks0J| |}t ||j ks>J||_|j rb|j|j |j|j }t ||j ks[J||_dSdSdSrE)rrrrrr%rrrr/ _decompressrrr)r=readerrr?rrrrAAs*   zWOFFFlavorData.__init__cCsddl}||Sr)r~r)r=rr~rrrrVs zWOFFFlavorData._decompressrE)rlrmrnZFlavorrArrrrrr<>s  r<cCst|d}|r|dd|7}d}d}|ddksJtdt||D]}||||}tdt|d|}|t|d@}q$|S)a,Calculate the checksum for an arbitrary block of data. If the data length is not a multiple of four, it assumes it is to be padded with null byte. >>> print(calcChecksum(b"abcd")) 1633837924 >>> print(calcChecksum(b"abcdxyz")) 3655064932 r rri>%dLr)r/r5rr0r)r? remaindervalueZ blockSizer"blockZlongsrrrrS\s rScCs|d|t}t|tkrtdt}tt|||j dkr'td|j dks8|j dks8Jd|j t d|j ||j d |_ |j dkrN |S) NrrttcfzNot a Font Collectionizunrecognized TTC version 0x%08xrr )rr ttcHeaderSizer/rrrr0ttcHeaderFormatTTCTagVersionrr,r-)r%r?r=rrrr+ts"     r+cCsft}d|_d|_||_|d|tt|| }|t jd|jgdg|jR|S)Nrrrr) rrrr,rrrrrrcr)r%r,r=r!rrrwriteTTCHeaders &r__main__)5__doc__ __future__rcollections.abcriortypesrZfontTools.misc.textToolsrZfontTools.miscrrrr r collectionsr logging getLoggerrlrUrr rr}rr{rrcalcsizerr1r.rrr4r3rrr*r)r2r<rSr+rsysdoctestexittestmodfailedrrrrsf         _     )(