*pj4V%SrSSKJr SSKJrJr S\S\4SjrSr \\ S'\ "\ 5r \ \ \ S '\ "S 5r\ \ \ S '\"\ 5VVs0sHupX_M snnr\\ \ 4\ S 'S \S\4SjrS\S\ S\4SjrS\S\ 4SjrS\ S\4SjrS\S\4SjrS\S\S-4Sjrgs snnf)aEarly detection of escape-sequence-based encodings (ISO-2022, HZ-GB-2312, UTF-7). These encodings use ESC (0x1B), tilde (~), or plus (+) sequences to switch character sets. They must be detected before binary detection (ESC is a control byte) and before ASCII detection (HZ-GB-2312 and UTF-7 use only printable ASCII bytes plus their respective shift markers). Note: ``from __future__ import annotations`` is intentionally omitted because this module is compiled with mypyc, which does not support PEP 563 string annotations. )decodes_without_error)DETERMINISTIC_CONFIDENCEDetectionResultdatareturncSnURSU5nUS:XagURSUS-5nUS:XagXS-Un[U5S:a*[U5S-S:Xa[SU55(agUS-nM|) zCheck that at least one ~{...~} region contains valid GB2312 byte pairs. In HZ-GB-2312 GB mode, characters are encoded as pairs of bytes in the 0x21-0x7E range. We require at least one region with a non-empty, even- length run of such bytes. rT~{F~}c3L# UHnSUs=:*=(a S:*Os v M g7f)!~N.0bs S/var/www/html/pdf-tiff/venv/lib/python3.13/site-packages/chardet/pipeline/escape.py (_has_valid_hz_regions..%s 6v!DA%%%%vs"$)findlenall)rstartbeginendregions r_has_valid_hz_regionsrs E  %' B;iiuqy) "9ai#& K1 F a1$6v666a s@ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/ _B64_CHARS _UTF7_BASE64sABCDEFGHIJKLMNOPQRSTUVWXYZ_B64_UPPERCASE _B64_DECODE b64_bytesc[U5nUS-nUS-nUS:a[USnSU-S- nXE-(agUS-n[U5nSnSn Sn UH2n US-[U -nU S- n U S:dMU S-n X- S-Xz'U S- n M4 Sn [SUS- S 5HWn X}S-X}S--nS Us=::aS ::aO O U (a gS n M/S Us=::aS::aO O U (d gSn MLU (a gSn MY U (+$)uCheck if base64 bytes decode to valid UTF-16BE with correct padding. A valid UTF-7 shifted sequence must: 1. Contain at least 3 Base64 characters (18 bits, enough for one 16-bit UTF-16 code unit). 2. Have zero-valued trailing padding bits (the unused low bits of the last Base64 sextet after the last complete 16-bit code unit). 3. Decode to valid UTF-16BE — no lone surrogates. This rejects accidental ``+-`` patterns found in URLs, MIME boundaries, hex-encoded hashes (e.g. SHA-1 git refs), and other ASCII data. The caller (``_has_valid_utf7_sequences``) already checks ``b64_len >= 3`` before calling this function, so *b64_bytes* is always at least 3 bytes. rr Fr iiTii)rr# bytearrayrange)r$n total_bits padding_bitslast_valmask num_bytesrawbit_buf bit_countout_idxc prev_highi code_units r_is_valid_utf7_b64r;6s8 IAQJ?Lay}-\!Q& ? aI I CGIG a<;q>1Q > NI#0D8CL qLG I 1i!mQ 'Vq[CAJ. Y (& (I y *F *II(=rposc[[S5-nSnUS- nUS:a/XnUS;aUS-nMXR;a US- nUS-nOUS:$US:aM/US:$)aQReturn True if the ``+`` at *pos* is embedded in a base64 stream. Walks backward from *pos*, skipping CR/LF, and counts consecutive base64 characters (including ``=`` for padding). If 4 or more are found, the ``+`` is likely part of a PEM certificate, email attachment, or similar base64 blob rather than a real UTF-7 shift character. =rr(> )r! frozenset)rr< b64_with_padcountr9rs r_is_embedded_in_base64rEss|$0)D/#AL E aA q& G  FA   QJE FA  A: q& A:rb64_datac`[USS-[USS--[US-S- $)z@Decode the first (only) UTF-16 code unit of a single-unit block.r r(r&r )r#)rFs r _single_unitrIsK Xa[ !R ' x{ #q ( * hqk " #   runitc|SUs=:*=(a S:*Os =(d SUs=:*=(a S:*Os =(d SUs=:*=(a S:*Os =(di SUs=:*=(a S:*Os =(dM S Us=:*=(a S :*Os =(d1 S Us=:*=(a S :*Os =(d S Us=:*=(a S:*$s $)z>Script ranges where a lone shifted character plausibly occurs.iiii i+i0i0iNiiiiir)rJs r_plausible_lone_unitrMs $  &  $ T # #V # $ T # #V # $ T # #V # $ T # #V #  $ T # #V #  $ T # #V # $rcSnUR[S5U5nUS:XagUS-nU[U5:aX[S5:XaUS-nMOU[U5:a\X[S5:XaKU[U5:a8X[S5:Xa'US- nU[U5:aX[S5:XaM'UnM[X5(aUnMUnU[U5:a.X[;a"US- nU[U5:aX[;aM"XC- nXUnUS:a[ S U55(dUnGM7US:a=[ U5(a-US -S -S:Xa [U5n[U5(dUnGMyg[X45nGM) a_Check that *data* contains at least one valid UTF-7 shifted sequence. A valid shifted sequence is ``+`` terminated by either an explicit ``-`` or any non-Base64 character (per RFC 2152). The base64 portion must decode to valid UTF-16BE with correct zero-padding bits. The sequence ``+-`` is a literal plus sign and is **not** counted. rT+r Fr(-c32# UH o[;v M g7f)N)r"rs rr,_has_valid_utf7_sequences..s#JA$7sr&r') rordrrEr!anyr;rIrMmax)rr shift_posr<r9b64_lenrFrJs r_has_valid_utf7_sequencesrYs E IIc#h. ?!m T?tyCH4!GE  T?tyCH4D /di3s8&;qD /di3s8&;E  "$ 2 2E  #d)m< 7 FA#d)m< 7'A; a<#J#J J JE  a<.x88! "a'#H-+D11EC G rNcfSU;nSU;nSU;nU(dU(dU(dgU(aSU;d SU;dSU;a[S[S S 9$S U;a[S [S S 9$S U;dSU;d SU;dSU;a*SU;aSU;a[S [S S 9$[S[S S 9$SU;a[S[SS 9$U(a+SU;a%SU;a[U5(a[S[SS 9$U(a?[U5S:a0[ US5(a[ U5(a[S[SS 9$g)zDetect ISO-2022, HZ-GB-2312, and UTF-7 from escape/tilde/plus sequences. :param data: The raw byte data to examine. :returns: A :class:`DetectionResult` if an escape encoding is found, or ``None``. ~+Ns$(Os$(Ps$(Qiso2022_jp_2004ja)encoding confidencelanguages(Iiso2022_jp_exts$Bs$@s(Js$(D iso2022_jp_2s$)C iso2022_krkor r hzzhrLzutf-7)rrrrVrrY)rhas_esc has_tildehas_pluss rdetect_escape_encodingrnsm oG It|H 9X  t!3zT7I"*3   ")3   D D T!$7d?&-7!#'3   "%3 Ud]u}9Nt9T9T/    I  !$ 0 0 %d + +/  r)__doc__chardet._utilsrchardet.pipelinerrbytesboolrr __annotations__rBr!intr" enumerater#dictr;rErIrMrYrn)r9r7s00rrxs 1F$6X EW(4 in4"++H!I #I1:*0EF0Eqt0EF T#s(^F:%:D:zST0 5 S  s t LELdL^YY?T+AY{Gs B%