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a n�h*H � @ s8 d Z ddlmZ ddlZddlZddlZddlZddlmZ ddl m Z ddl m Z ddl mZ ddlmZmZ dd lmZ ddlZddlZdd lmZ ed ee�Zg d �ZG d d� de�Z e ddddd�e ddddd�e dddd d �e d d d d!d"�e d#d$d%d&d'�e d(d)d*d+d,�gZ d-d.� e D �Z d d/d0d1�d2d3�Z d^d d5d d0d6d7�d8d9�Z ej!ej"ej#ej$ej%ej&ej'd:�Z(ed;d<� d=D ��Z)ej*d>ej+d?�Z,d/d/d@�dAdB�Z-dCd/dCdD�dEdF�Z.d/d/dCdG�dHdI�Z/d/d0d@�dJdK�Z0e dLdM�d/d/dCdG�dNdO��Z1dPd/dPdQ�dRdS�Z2dCd/dT�dUdV�Z3G dWdX� dXej4�Z5dYdZd[�d\d]�Z6dS )_a2 Unicode and some other ASCII characters can be used to create programs that run much different compared to what a human reader would expect from them. PEP 672 lists some examples. See: https://www.python.org/dev/peps/pep-0672/ The following checkers are intended to make users are aware of these issues. � )� annotationsN)� OrderedDict)�Iterable)� lru_cache)�detect_encoding)� NamedTuple�TypeVar)�nodes)�checkers�_StrLike) u u u u u u u u u u c @ sV e Zd ZU dZded< ded< ded< ded< ded< dd�d d �Zdd�d d �Zd S )�_BadCharz/Representation of an ASCII char considered bad.�str�name� unescaped�escaped�code� help_text)�returnc C s d| j � d| j� d�S )z0Used for the detailed error message description.z Invalid unescaped character z, use "z " instead.)r r ��self� r ��/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/pylint/checkers/unicode.py� descriptionC s ��z_BadChar.descriptionc C s d| j � �S )z2Used to generate the human readable error message.zinvalid-character-)r r r r r � human_codeJ s z_BadChar.human_codeN)�__name__� __module__� __qualname__�__doc__�__annotations__r r r r r r r : s r Z backspace�z\bZE2510zUMoves the cursor back, so the character after it will overwrite the character before.zcarriage-return� z\rZE2511z]Moves the cursor to the start of line, subsequent characters overwrite the start of the line.�sub�z\x1AZE2512zcCtrl+Z "End of text" on Windows. Some programs (such as type) ignore the rest of the file after it.�esc�z\x1BZE2513zNCommonly initiates escape codes which allow arbitrary control of the terminal.�nul� z\0ZE2514z Mostly end of input for python.zzero-width-spaceu z\u200BZE2515z9Invisible space character could hide real code execution.c C s i | ] }|j |�qS r )r )�.0�charr r r � <dictcomp>� � r) r �int��line�codecr c C sF t | t�r t| |��|d�}n| }|�d�}||kr>|�d�}t|�S )z?Get the length of a string like line as displayed in an editor.�replace� r )� isinstance�bytes� _remove_bom�decode�rstrip�len)r- r. �decoded�strippedr r r � _line_length� s r9 � zdict[_StrLike, _BadChar]�dict[int, _BadChar])r- � search_dict�new_line�byte_str_lengthr c C s� i }|� � D ]�\}}|| vr q |jdkrD| �|�rDt| �d| }nd}d}| �||�} | dkr | |kr|t| | �} ||| < | d }| �||�} qXq |S )z�Get all occurrences of search dict keys within line. Ignores Windows end of line and can handle bytes as well as string. Also takes care of encodings for which the length of an encoded code point does not default to 8 Bit. r � Nr r: )�itemsr �endswithr6 �findr+ ) r- r< r= r> �resultZ search_forr( Z ignore_pos�start�pos�colr r r �_map_positions_to_result� s rG )�utf-8�utf-16�utf-32�utf-16le�utf-16be�utf-32le�utf-32bec c s | ]}t | |fV qd S �N)� UNICODE_BOMS)r' r. r r r � <genexpr>� s �rQ )rM rN rH rK rL z%utf[ -]?(8|16|32)[ -]?(le|be|)?(sig)?)�flags�r. r c C s t �d| ��� S )zDMake sure the codec name is always given as defined in the BOM dict.zutf-\1\2)�UTF_NAME_REGEX_COMPILEDr! �lower�r. r r r �_normalize_codec_name� s rW r2 )�encoded�encodingr c C s2 |t vr | S t | }| �|�r.| t|�d� S | S )z$Remove the bom if given from a line.N)rP � startswithr6 )rX rY �bomr r r r3 � s r3 )�stringrY r c C s t | �|�|�S )z#Encode a string but remove the BOM.)r3 �encode�r\ rY r r r �_encode_without_bom� s r_ c C s | � d�rdS | � d�r dS dS )z6Return how many byte are usually(!) a character point.rJ � rI r? r: �rZ rV r r r �_byte_to_str_length� s rb i� )�maxsizec C s t | |�S )z3A cached version of encode used for search pattern.)r_ r^ r r r �_cached_encode_search� s rd zIterable[bytes])�steamr. r c c s� |� d�s |� d�s | E dH nxd�dd� | D ��}td|�}d}|�||�}|dkrn|||t|� � V n ||d� r�||d� V q�|t|� }qBdS ) z�Handle line ending for UTF16 and UTF32 correctly. Currently, Python simply strips the required zeros after \n after the line ending. Leading to lines that can't be decoded properly rI rJ Nr* c s s | ] }|V qd S rO r )r' r- r r r rQ r* z,_fix_utf16_32_line_stream.<locals>.<genexpr>r0 r )rZ �joinrd rB r6 )re r. �contentr= rD rE r r r �_fix_utf16_32_line_stream� s rh )� first_liner c C s0 t �� D ]\}}| �|�r| S qtd��dS )a Try to extract the codec (unicode only) by checking for the BOM. For details about BOM see https://unicode.org/faq/utf_bom.html#BOM Args: first_line: the first line of a file Returns: a codec name Raises: ValueError: if no codec was found z-No BOM found. Could not detect Unicode codec.N)�BOM_SORTED_TO_CODECr@ rZ � ValueError)ri r[ r. r r r �extract_codec_from_bom s rl c @ s� e Zd ZdZdZdddd�dd� eD ��Zed d d �d d ��Zed d d �dd��Z e dd dd�dd��Z eddd�dd��Z d ddd �d d �Z ddd dd �d d!�Zddd dd �d"d#�Zd$dd%�d&d'�Zd(S ))�UnicodeCheckera� Check characters that could be used to hide bad code to humans. This includes: - Bidirectional Unicode (see https://trojansource.codes/) - Bad ASCII characters (see PEP672) If a programmer requires to use such a character they should use the escaped version, that is also much easier to read and does not depend on the editor used. The Checker also includes a check that UTF-16 and UTF-32 are not used to encode Python files. At the time of writing Python supported only UTF-8. See https://stackoverflow.com/questions/69897842/ and https://bugs.python.org/issue1503789 for background. Zunicode_checker)z?UTF-16 and UTF-32 aren't backward compatible. Use UTF-8 instead�invalid-unicode-codecz�For compatibility use UTF-8 instead of UTF-16/UTF-32. See also https://bugs.python.org/issue1503789 for a history of this issue. And https://softwareengineering.stackexchange.com/questions/102205/ for some possible problems when using UTF-16 for instance.)z_Contains control characters that can permit obfuscated code executed differently than displayed�bidirectional-unicodea bidirectional unicode are typically not displayed characters required to display right-to-left (RTL) script (i.e. Chinese, Japanese, Arabic, Hebrew, ...) correctly. So can you trust this code? Are you sure it displayed correctly in all editors? If you did not write it or your language is not RTL, remove the special characters, as they could be used to trick you into executing code, that does something else than what it looks like. More Information: https://en.wikipedia.org/wiki/Bidirectional_text https://trojansource.codes/)z2PEP8 recommends UTF-8 as encoding for Python files�bad-file-encodingzsPEP8 recommends UTF-8 default encoding for Python files. See https://peps.python.org/pep-0008/#source-file-encoding)ZE2501ZE2502ZC2503c C s$ i | ] }|j |�� |�� |jf�qS r )r r r r )r' Zbad_charr r r r) m s ��zUnicodeChecker.<dictcomp>r �boolrS c C s | � d�S )N)rI rJ ra rV r r r �_is_invalid_codecw s z UnicodeChecker._is_invalid_codecc C s | � d�S )N�utfra rV r r r � _is_unicode{ s zUnicodeChecker._is_unicoder2 r; r, c C s� z |j |dd�}t}t||d�W S ty� |}i }tD ]>}t�t�� ||t|j|�< W d � q:1 sn0 Y q:t||td|�t |�d� Y S 0 dS )z�Find all matches of BAD_CHARS within line. Args: line: the input codec: that will be used to convert line/or search string into Return: A dictionary with the column offset and the BadASCIIChar �strict)�errorsr0 N)r> ) r4 �BAD_ASCII_SEARCH_DICTrG �UnicodeDecodeError� BAD_CHARS� contextlib�suppressrd r rb )�clsr- r. Z line_searchr< Zline_search_byteZsearch_dict_byter( r r r �_find_line_matches s" �.�z!UnicodeChecker._find_line_matchesz io.BytesIOztuple[str, int])�streamr c C s� z t | j�\}}t|�pd}W nn ty� } zV| �d� zt| �� �}d}W n* tyv } z||�W Y d}~n d}~0 0 W Y d}~n d}~0 0 t|�|fS )a� Determine the codec from the given stream. first tries https://www.python.org/dev/peps/pep-0263/ and if this fails also checks for BOMs of UTF-16 and UTF-32 to be future-proof. Args: stream: The byte stream to analyse Returns: A tuple consisting of: - normalized codec name - the line in which the codec was found Raises: SyntaxError: if failing to detect codec r: r N)r �readliner6 � SyntaxError�seekrl rk rW )r~ r. �lines�codec_definition_line�e�ver r r �_determine_codec� s 2z UnicodeChecker._determine_codecr+ �None)r. r� r c C s8 |dkr4d}| � |�rd}| j|||tjjddd� dS )z Check validity of the codec.rH rp rn N�r- � end_lineno� confidence� col_offset�end_col_offset)rr � add_message�pylint� interfaces�HIGH)r r. r� �msgr r r � _check_codec� s �zUnicodeChecker._check_codec)r- �linenor. r c C sR | � ||�}|�� D ]8\}}| j|�� ||tjj|d |t|j� d d� qdS )z Look for chars considered bad.r: r� N) r} r@ r� r r� r� r� r6 r )r r- r� r. �matchesrF r( r r r �_check_invalid_chars� s �z#UnicodeChecker._check_invalid_charsc C sN | � |�sdS tD ]6}t||�|v r| jd||dt||�tjjd� qJqdS )z2Look for Bidirectional Unicode, if we use unicode.Nro r )r- r� r� r� r� )rt � BIDI_UNICODErd r� r9 r� r� r� )r r- r� r. Z dangerousr r r �_check_bidi_chars� s �z UnicodeChecker._check_bidi_charsz nodes.Module)�noder c C s� |� � �~}| �|�\}}| �||� |�d� tt||�dd�D ]6\}}|dkrZt||�}| �|||� | �|||� q@W d � n1 s�0 Y dS )z3Perform the actual check by checking module stream.r r: )rD N) r~ r� r� r� � enumeraterh r3 r� r� )r r� r~ r. Z codec_liner� r- r r r �process_module s � z UnicodeChecker.process_moduleN)r r r r r ry Zmsgs� staticmethodrr rt � classmethodr} r� r� r� r� r� r r r r rm , s, �+��5#(rm zpylint.lint.PyLinterr� )�linterr c C s | � t| �� d S rO )Zregister_checkerrm )r� r r r �register s r� )r: )7r � __future__r �codecsrz �io�re� collectionsr �collections.abcr � functoolsr �tokenizer �typingr r Zastroidr Zpylint.interfacesr� Z pylint.lintr r r2 r r� r ry rw r9 rG �BOM_UTF8� BOM_UTF16� BOM_UTF32� BOM_UTF16_LE� BOM_UTF16_BE� BOM_UTF32_LE� BOM_UTF32_BErP rj �compile� IGNORECASErT rW r3 r_ rb rd rh rl ZBaseRawFileCheckerrm r� r r r r �<module> s� � � � � ���: �&� �� m
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