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CharSetProbergffffff�?Nc C s d | _ || _t�t�| _d S �N)�_state� lang_filter�loggingZ getLogger�__name__Zlogger)�selfr � r �7/usr/lib/python3/dist-packages/chardet/charsetprober.py�__init__' s zCharSetProber.__init__c C s t j| _d S r )r Z DETECTINGr �r
r r r �reset, s zCharSetProber.resetc C s d S r r r r r r � charset_name/ s zCharSetProber.charset_namec C s d S r r )r
�bufr r r �feed3 s zCharSetProber.feedc C s | j S r )r r r r r �state6 s zCharSetProber.statec C s dS )Ng r r r r r �get_confidence: s z CharSetProber.get_confidencec C s t �dd| �} | S )Ns ([ -])+� )�re�sub)r r r r �filter_high_byte_only= s z#CharSetProber.filter_high_byte_onlyc C s\ t � }t�d| �}|D ]@}|�|dd� � |dd� }|�� sL|dk rLd}|�|� q|S )u9
We define three types of bytes:
alphabet: english alphabets [a-zA-Z]
international: international characters [-ÿ]
marker: everything else [^a-zA-Z-ÿ]
The input buffer can be thought to contain a series of words delimited
by markers. This function works to filter all words that contain at
least one international character. All contiguous sequences of markers
are replaced by a single space ascii character.
This filter applies to all scripts which do not use English characters.
s% [a-zA-Z]*[�-�]+[a-zA-Z]*[^a-zA-Z�-�]?N���� �r )� bytearrayr �findall�extend�isalpha)r �filteredZwordsZwordZ last_charr r r �filter_international_wordsB s � z(CharSetProber.filter_international_wordsc C s� t � }d}d}tt| ��D ]n}| ||d � }|dkr<d}n |dkrHd}|dk r|�� s||kr�|s�|�| ||� � |�d� |d }q|s�|�| |d � � |S )
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Returns a copy of ``buf`` that retains only the sequences of English
alphabet and high byte characters that are not between <> characters.
Also retains English alphabet and high byte characters immediately
before occurrences of >.
This filter can be applied to all scripts which contain both English
characters and extended ASCII characters, but is currently only used by
``Latin1Prober``.
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__module__� __qualname__ZSHORTCUT_THRESHOLDr
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