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o ;j 1 � @ s� d dl Z d dlmZ d dlmZ d dlmZ d dlmZm Z m Z m Z m Z ddl mZ ddlmZmZmZmZ dd lmZ dd lmZ dd lmZmZmZm Z m Z d e d e e fdd�Z de d e e fdd�Z e� d e d e e fdd��Z!e� d e d e e fdd��Z"eed�de d e e#e#f fdd��Z$ d1d e e d e#d e e fd d �Z%de d e e d e&fd!d"�Z'd#e d e e fd$d%�Z(d&e e d efd'd(�Z)d&ed efd)d*�Z*ed+d� d2d#e d-e&d.e e d efd/d0��Z+dS )3� N)�IncrementalDecoder)�Counter)� lru_cache)r �Dict�List�Optional�Tuple� )� FREQUENCIES)�KO_NAMES�LANGUAGE_SUPPORTED_COUNT�TOO_SMALL_SEQUENCE�ZH_NAMES)� is_suspiciously_successive_range)�CoherenceMatches)�is_accentuated�is_latin�is_multi_byte_encoding�is_unicode_range_secondary� unicode_range� iana_name�returnc s� t | �rtd��t�d�| ��j}|dd�}i �d� tdd�D ]/}|�t|g��}|rNt |�}|du r4q t |�d u rN|�vrBd�|< �| d 7 < � d 7 � q t � �fd d ��D ��S ) zF Return associated unicode ranges in a single byte code page. z.Function not supported on multi-byte code pagez encodings.{}�ignore)�errorsr �@ � NFr c s g | ] }�| � d kr|�qS )g333333�?� )�.0�character_range��character_countZ seen_rangesr �I/opt/saltstack/salt/lib/python3.10/site-packages/charset_normalizer/cd.py� <listcomp>3 s �z*encoding_unicode_range.<locals>.<listcomp>) r �IOError� importlib� import_module�formatr �range�decode�bytesr r �sorted)r �decoder�p�i�chunkr r r r! �encoding_unicode_range s6 �� � ��r/ � primary_rangec C s> g }t �� D ]\}}|D ]}t|�| kr|�|� nq q|S )z> Return inferred languages used with a unicode range. )r �itemsr �append)r0 � languages�language� characters� characterr r r! �unicode_range_languages; s ��r7 c C s< t | �}d}|D ] }d|vr|} nq|du rdgS t|�S )z� Single-byte encoding language association. Some code page are heavily linked to particular language(s). This function does the correspondence. NZLatin� Latin Based)r/ r7 )r Zunicode_rangesr0 Zspecified_ranger r r! �encoding_languagesJ s �r9 c C s` | � d�s| � d�s| � d�s| dkrdgS | � d�s | tv r"dgS | � d�s+| tv r.d gS g S ) z� Multi-byte encoding language association. Some code page are heavily linked to particular language(s). This function does the correspondence. Zshift_� iso2022_jpZeuc_j�cp932ZJapaneseZgbZChinese� iso2022_krZKorean)� startswithr r )r r r r! �mb_encoding_languages^ s ���r> )�maxsizer4 c C sB d}d}t | D ]}|st|�rd}|r t|�du r d}q||fS )zg Determine main aspects from a supported language if it contains accents and if is pure Latin. FT)r r r )r4 �target_have_accents�target_pure_latinr6 r r r! �get_target_featuress s �rB Fr5 �ignore_non_latinc s� g }t dd� � D ��}t�� D ]6\}}t|�\}}|r |du r q|du r'|r'qt|�}t� fdd�|D ��} | | } | dkrE|�|| f� qt|dd� d d �}d d� |D �S ) zE Return associated languages associated to given characters. c s s � | ]}t |�V qd S �N)r )r r6 r r r! � <genexpr>� � � z%alphabet_languages.<locals>.<genexpr>Fc s g | ]}|� v r|�qS r r )r �c�r5 r r! r" � s z&alphabet_languages.<locals>.<listcomp>g�������?c S � | d S �Nr r ��xr r r! �<lambda>� � z$alphabet_languages.<locals>.<lambda>T��key�reversec S s g | ]}|d �qS )r r )r Zcompatible_languager r r! r" � � )�anyr r1 rB �lenr2 r* ) r5 rC r3 Zsource_have_accentsr4 Zlanguage_charactersr@ rA r Zcharacter_match_count�ratior rH r! �alphabet_languages� s$ ��rV �ordered_charactersc C s� | t vr td�| ���d}tt | �}t|�}tt | �}|dk}t|td|��D ]�\}}||vr2q)t | �|�} || } t|| �} |du rPt | | �dkrPq)|du rct | | �|d k rc|d7 }q)t | d| � } t | | d � } |d|� }||d � }tt|�t| �@ �}tt|�t| �@ �}t| �dkr�|dkr�|d7 }q)t| �dkr�|dkr�|d7 }q)|t| � d ks�|t| � d kr�|d7 }q)q)|t|� S ) aN Determine if a ordered characters list (by occurrence from most appearance to rarest) match a particular language. The result is a ratio between 0. (absolutely no correspondence) and 1. (near perfect fit). Beware that is function is not strict on the match in order to ease the detection. (Meaning close match is 1.) z{} not availabler � F� T� r Ng�������?) r � ValueErrorr& �setrT �zipr' �index�int�abs)r4 rW Zcharacter_approved_countZFREQUENCIES_language_setZordered_characters_countZ target_language_characters_countZlarge_alphabetr6 Zcharacter_rankZcharacter_rank_in_languageZexpected_projection_ratioZcharacter_rank_projectionZcharacters_before_sourceZcharacters_after_sourceZcharacters_beforeZcharacters_afterZbefore_match_countZafter_match_countr r r! � characters_popularity_compare� sf �� ��� ��� ra �decoded_sequencec C s� i }| D ]?}|� � du r qt|�}|du rqd}|D ] }t||�du r'|} nq|du r.|}||vr9|�� ||< q|| |�� 7 < qt|�� �S )a Given a decoded text sequence, return a list of str. Unicode range / alphabet separation. Ex. a text containing English/Latin with a bit a Hebrew will return two items in the resulting list; One containing the latin letters and the other hebrew. FN)�isalphar r �lower�list�values)rb Zlayersr6 r Zlayer_target_rangeZdiscovered_ranger r r! �alpha_unicode_split� s, �� rg �resultsc sf i � | D ] }|D ]}|\}}|� vr|g� |< q� | � |� qq� fdd�� D �}t|dd� dd�S )z� This function merge results previously given by the function coherence_ratio. The return type is the same as coherence_ratio. c s. g | ]}|t t� | �t� | � d �f�qS )rY )�round�sumrT )r r4 �Zper_language_ratiosr r! r" , s ����z*merge_coherence_ratios.<locals>.<listcomp>c S rI rJ r rK r r r! rM 7 rN z(merge_coherence_ratios.<locals>.<lambda>TrO )r2 r* )rh �resultZ sub_resultr4 rU �merger rk r! �merge_coherence_ratios s � � rn c s� t � � | D ]}|\}}|�dd�}|� vrg � |< � | �|� qt� fdd�� D ��r@g }� D ] }|�|t� | �f� q0|S | S )u� We shall NOT return "English—" in CoherenceMatches because it is an alternative of "English". This function only keeps the best match and remove the em-dash in it. u —� c 3 s � | ] }t � | �d kV qdS )r N)rT )r �e�Z index_resultsr r! rE J s � z/filter_alt_coherence_matches.<locals>.<genexpr>)�dict�replacer2 rS �max)rh rl r4 rU Z no_em_nameZfiltered_resultsr rq r! � filter_alt_coherence_matches: s ru i 皙�����?� threshold� lg_inclusionc C s� g }d}d}|dur|� d�ng }d|v r d}|�d� t| �D ]K}t|�}|�� } tdd� | D ��} | tkr8q d d � | D �} |pEt| |�D ]$} t| | �} | |k rRqF| d krZ|d 7 }|� | t | d �f� |dkrj nqFq t t |�dd� dd�S )z� Detect ANY language that can be identified in given sequence. The sequence will be analysed by layers. A layer = Character extraction by alphabets/ranges. Fr N�,r8 Tc s s � | ]\}}|V qd S rD r �r rG �or r r! rE l rF z"coherence_ratio.<locals>.<genexpr>c S s g | ]\}}|�qS r r rz r r r! r" q rR z#coherence_ratio.<locals>.<listcomp>g�������?r rY rZ c S rI rJ r rK r r r! rM � rN z!coherence_ratio.<locals>.<lambda>rO ) �split�removerg r � most_commonrj r rV ra r2 ri r* ru )rb rw rx rh rC Zsufficient_match_countZlg_inclusion_listZlayerZsequence_frequenciesr~ r Zpopular_character_orderedr4 rU r r r! �coherence_ratioU s@ �����r )F)rv N),r$ �codecsr � collectionsr � functoolsr �typingZ TypeCounterr r r r Zassetsr Zconstantr r r r Zmdr Zmodelsr �utilsr r r r r �strr/ r7 r9 r> �boolrB rV �floatra rg rn ru r r r r r! �<module> s^ ' ��� �#�� �P' �����
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