U ڲgYX @sRddlmZddlZddlmZddlmZddlmZm Z m Z m Z ddl m Z mZmZmZddlmZdd lmZmZdd lmZmZmZmZmZmZmZed Ze Z!e!"e#d d(dddddddddddd ddZ$d)dddddddddddd ddZ%d*d ddddddddddd! d"d#Z&d+d$ddddddddddd% d&d'Z'dS),) annotationsN)PathLike)BinaryIO)coherence_ratioencoding_languagesmb_encoding_languagesmerge_coherence_ratios)IANA_SUPPORTEDTOO_BIG_SEQUENCETOO_SMALL_SEQUENCETRACE) mess_ratio) CharsetMatchCharsetMatches)any_specified_encodingcut_sequence_chunks iana_nameidentify_sig_or_bom is_cp_similaris_multi_byte_encodingshould_strip_sig_or_bomZcharset_normalizerz)%(asctime)s | %(levelname)s | %(message)s皙?TF皙?zbytes | bytearrayintfloatzlist[str] | Noneboolr) sequencessteps chunk_size threshold cp_isolation cp_exclusionpreemptive_behaviourexplainlanguage_thresholdenable_fallbackreturnc 2 Cs t|ttfs tdt||r>tj} tt t t t |} | dkrt d|rvtt t | prtjtt|dddgdgS|dk rtt d d |d d |D}ng}|dk rtt d d |dd |D}ng}| ||krtt d||| d}| }|dkr:| ||kr:t| |}t |tk} t |tk} | rltt d| n| rtt d| g}|rt|nd}|dk r||tt d|t}g}g}d}d}d}t}t}t|\}}|dk r||tt dt |||dd|kr4|d|tD]~}|rV||krVq<|rj||krjq<||krxq<||d}||k}|ot|}|dkr|stt d|q<|dkr|stt d|q| r4| r4|j3|j3k s>|dk rTt d7||n| rnt d8||| rt d9|2j1t |dn t d:| rtt t | |S);af Given a raw bytes sequence, return the best possibles charset usable to render str objects. If there is no results, it is a strong indicator that the source is binary/not text. By default, the process will extract 5 blocks of 512o each to assess the mess and coherence of a given sequence. And will give up a particular code page after 20% of measured mess. Those criteria are customizable at will. The preemptive behavior DOES NOT replace the traditional detection workflow, it prioritize a particular code page but never take it for granted. Can improve the performance. You may want to focus your attention to some code page or/and not others, use cp_isolation and cp_exclusion for that purpose. This function will strip the SIG in the payload/sequence every time except on UTF-16, UTF-32. By default the library does not setup any handler other than the NullHandler, if you choose to set the 'explain' toggle to True it will alter the logger configuration to add a StreamHandler that is suitable for debugging. Custom logging format and handler can be set manually. z3Expected object of type bytes or bytearray, got: {}rz[szfrom_bytes..zacp_exclusion is set. use this flag for debugging purpose. limited list of encoding excluded : %s.cSsg|]}t|dqSr,r-r.r1r1r2r3fsz^override steps (%i) and chunk_size (%i) as content does not fit (%i byte(s) given) parameters.rz>Trying to detect encoding from a tiny portion of ({}) byte(s).zIUsing lazy str decoding because the payload is quite large, ({}) byte(s).z@Detected declarative mark in sequence. Priority +1 given for %s.zIDetected a SIG or BOM mark on first %i byte(s). Priority +1 given for %s.ascii>utf_16utf_32z\Encoding %s won't be tested as-is because it require a BOM. 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With %i alternatives.z=Encoding detection: Unable to determine any suitable charset.)4 isinstance bytearraybytes TypeErrorformattypeloggerlevel addHandlerexplain_handlersetLevelr lendebug removeHandlerloggingWARNINGrrlogjoinrr r rappendsetrr addrrModuleNotFoundError ImportErrorstrUnicodeDecodeError LookupErrorrrangemaxrrdecodesumroundrrrr r8best fingerprint)2rr r!r"r#r$r%r&r'r(Zprevious_logger_levellengthZis_too_small_sequenceZis_too_large_sequenceZprioritized_encodingsZspecified_encodingZtestedZtested_but_hard_failureZtested_but_soft_failureZfallback_asciiZ fallback_u8Zfallback_specifiedresultsZearly_stop_resultsZ sig_encodingZ sig_payloadZ encoding_ianaZdecoded_payloadZbom_or_sig_availableZstrip_sig_or_bomZis_multi_byte_decodereZsimilar_soft_failure_testZencoding_soft_failedZr_Zmulti_byte_bonusZmax_chunk_gave_upZearly_stop_countZlazy_str_hard_failureZ md_chunksZ md_ratioschunkZmean_mess_ratioZfallback_entryZtarget_languagesZ cd_ratiosZchunk_languagesZcd_ratios_mergedZ current_matchZprobable_resultr1r1r2 from_bytes!s(                             &                               rgr) fpr r!r"r#r$r%r&r'r(r)c Cst|||||||||| S)z Same thing than the function from_bytes but using a file pointer that is already ready. Will not close the file pointer. )rgread) rhr r!r"r#r$r%r&r'r(r1r1r2from_fp srjzstr | bytes | PathLike) pathr r!r"r#r$r%r&r'r(r)c Cs<t|d(} t| ||||||||| W5QRSQRXdS)z Same thing than the function from_bytes but with one extra step. Opening and reading given file path in binary mode. Can raise IOError. rbN)openrj) rkr r!r"r#r$r%r&r'r(rhr1r1r2 from_path>s rnz!PathLike | str | BinaryIO | bytes) fp_or_path_or_payloadr r!r"r#r$r%r&r'r(r)c Cszt|ttfr,t|||||||||| d } nHt|ttfrXt|||||||||| d } nt|||||||||| d } | S)a) Detect if the given input (file, bytes, or path) points to a binary file. aka. not a string. Based on the same main heuristic algorithms and default kwargs at the sole exception that fallbacks match are disabled to be stricter around ASCII-compatible but unlikely to be a string. ) r r!r"r#r$r%r&r'r()rBrYrrnrDrCrgrj) ror r!r"r#r$r%r&r'r(Zguessesr1r1r2 is_binary]sX   rp) rrrNNTFrT) rrrNNTFrT) rrrNNTFrT) rrrNNTFrF)( __future__rrPosrtypingrZcdrrrr Zconstantr r r r Zmdrmodelsrrutilsrrrrrrr getLoggerrH StreamHandlerrK setFormatter Formatterrgrjrnrpr1r1r1r2sr    $ $$ $!