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Editing: encoding.cpython-310.pyc
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We attempt to decode everything strictly using UTF-8, then Latin-1, and failing that, we use UTF-8 and replace unknown characters. The localstr class is used to cache the known UTF-8 encoding of strings next to their local representation to allow lossless round-trip conversion back to UTF-8. >>> u = b'foo: \xc3\xa4' # utf-8 >>> l = tolocal(u) >>> l 'foo: ?' >>> fromlocal(l) 'foo: \xc3\xa4' >>> u2 = b'foo: \xc3\xa1' >>> d = { l: 1, tolocal(u2): 2 } >>> len(d) # no collision 2 >>> b'foo: ?' in d False >>> l1 = b'foo: \xe4' # historical latin1 fallback >>> l = tolocal(l1) >>> l 'foo: ?' >>> fromlocal(l) # magically in utf-8 'foo: \xc3\xa4' zUTF-8s UTF-8r% r �! please check your locale settings��hintN)� isasciistr�decode�encodingr �_sysstrrA r �UnicodeDecodeError�fallbackencoding� LookupErrorr �Abortr �bytestr)r& r2 �rr) r r r �tolocal� s: # �� ���rO c C s� t | t�r| jS t| �r| S z| �tt�tt��}|�d�W S t yE } z| t d|j d �|j d � }t � d|t�|�f ��d}~w tyZ } z t j t�|�dd��d}~ww )a� Convert a string from the local character encoding to UTF-8 We attempt to decode strings using the encoding mode set by HGENCODINGMODE, which defaults to 'strict'. In this mode, unknown characters will cause an error message. Other modes include 'replace', which replaces unknown characters with a special Unicode character, and 'ignore', which drops the character. r r � s decoding near '%s': %s!NrB rC )� isinstancer r0 rE rF rH rG � encodingmoder rI �max�startr rL r rM rK )r& r2 �inst�subr) r r r � fromlocal� s& �� ���rW c C s t | �d��S )z;Convert a unicode string to a byte string of local encodingr )rO r )r2 r r r � unitolocal� � rX c C s t | ��d�S )z;Convert a byte string of local encoding to a unicode stringr )rW rF �r& r r r � unifromlocal� rY r[ c s � fdd�}|S )z^Create a proxy method that forwards __unicode__() and __str__() of Python 3 to __bytes__()c s t � | ��S r- )r[ )�obj�� bytesfuncr r �unifunc s zunimethod.<locals>.unifuncr )r^ r_ r r] r � unimethod s r` c C � | S r- r rZ r r r � strtolocal � rb c C ra r- r rZ r r r � strfromlocal rc rd c C s� zt | �W S ty Y nw z)t| t�r | j�d�}n | �tt�tt��}|� � }||kr1| W S |� tt��W S t yE | � � Y S t yZ } z t jt�|�dd��d}~ww )�9best-effort encoding-aware case-folding of local string sr rB rC N)� asciilowerrI rQ r r0 rF rH rG rR �lowerr � UnicodeErrorrK r rL r rM )r& r2 �lur) r r r rg # s* � ���rg c C s& zt | �W S ty t| � Y S w )re )� asciiupperrI � upperfallbackrZ r r r �upper< s �rl c C s� z)t | t�r | j�d�}n | �tt�tt��}|�� }||kr"| W S |�tt��W S t y6 | �� Y S t yK } z t j t �|�dd��d }~ww )Nr rB rC )rQ r r0 rF rH rG rR rl r rh rK r rL r rM )r& r2 �uur) r r r rk E s ���rk c s" e Zd ZdZd� fdd� Z� ZS )�WindowsEnvironzE`os.environ` normalizes environment variables to uppercase on windowsNc s t � �t|�|�S r- )r4 �getrl )r6 �key�defaultr7 r r ro a s zWindowsEnviron.getr- )r; r< r= r> ro r@ r r r7 r rn ^ s rn r s ^[a-z]:c C sF t �� } t j�| �} t| �} t�| �r!| dd� �� | dd � } | S )Nr r )�os�getcwd�path�realpathrb �DRIVE_RE�matchrl )�cwdr r r rs ~ s rs s HGENCODINGAMBIGUOUSs narrows wides WFAs WFc C s t | �tt�d��S )zCFind the column width of a string for display in the local encodingr% )� ucolwidthrF rH rG rZ r r r �colwidth� s rz c s2 t tdd�� � durt� fdd�| D ��S t| �S )z5Find the column width of a Unicode string for display�east_asian_widthNc s g | ] }� |�t v r d p d�qS )� r )�_wide)r r' ��eawr r r � s z ucolwidth.<locals>.<listcomp>)r � unicodedata�sum�len)�dr r~ r ry � s ry c C sB t �|| t| ��D ]}| ||� }t|�|kr | S q td��)zOUse colwidth to find a c-column substring of s starting at byte index startzsubstring not found)r �xranger� rz � ValueError)r& rT r' r �tr r r �getcols� s �r� r# Fc C sJ z | � tt��}W n> tyG t| �|kr| Y S |t|�8 }|dkr0|d|t|� � Y S |r=|| | d� Y S | d|� | Y S w t|�|krP| S |t|�8 }|dkrd|d|t|� � S t|�}|rn|�� d}t|�D ]\}}|t|�7 }||kr� nqt|d|� }|r�|�� d� |�� tt��}|r�|| S || S )u� Trim string 's' to at most 'width' columns (including 'ellipsis'). If 'leftside' is True, left side of string 's' is trimmed. 'ellipsis' is always placed at trimmed side. >>> from .node import bin >>> def bprint(s): ... print(pycompat.sysstr(s)) >>> ellipsis = b'+++' >>> from . import encoding >>> encoding.encoding = b'utf-8' >>> t = b'1234567890' >>> bprint(trim(t, 12, ellipsis=ellipsis)) 1234567890 >>> bprint(trim(t, 10, ellipsis=ellipsis)) 1234567890 >>> bprint(trim(t, 8, ellipsis=ellipsis)) 12345+++ >>> bprint(trim(t, 8, ellipsis=ellipsis, leftside=True)) +++67890 >>> bprint(trim(t, 8)) 12345678 >>> bprint(trim(t, 8, leftside=True)) 34567890 >>> bprint(trim(t, 3, ellipsis=ellipsis)) +++ >>> bprint(trim(t, 1, ellipsis=ellipsis)) + >>> u = u'あいうえお' # 2 x 5 = 10 columns >>> t = u.encode(pycompat.sysstr(encoding.encoding)) >>> bprint(trim(t, 12, ellipsis=ellipsis)) ããããã >>> bprint(trim(t, 10, ellipsis=ellipsis)) ããããã >>> bprint(trim(t, 8, ellipsis=ellipsis)) ãã+++ >>> bprint(trim(t, 8, ellipsis=ellipsis, leftside=True)) +++ãã >>> bprint(trim(t, 5)) ãã >>> bprint(trim(t, 5, leftside=True)) ãã >>> bprint(trim(t, 4, ellipsis=ellipsis)) +++ >>> bprint(trim(t, 4, ellipsis=ellipsis, leftside=True)) +++ >>> t = bin(b'112233445566778899aa') # invalid byte sequence >>> bprint(trim(t, 12, ellipsis=ellipsis)) "3DUfwª >>> bprint(trim(t, 10, ellipsis=ellipsis)) "3DUfwª >>> bprint(trim(t, 8, ellipsis=ellipsis)) "3DU+++ >>> bprint(trim(t, 8, ellipsis=ellipsis, leftside=True)) +++fwª >>> bprint(trim(t, 8)) "3DUfw >>> bprint(trim(t, 8, leftside=True)) 3DUfwª >>> bprint(trim(t, 3, ellipsis=ellipsis)) +++ >>> bprint(trim(t, 1, ellipsis=ellipsis)) + r N� ) rF rH rG rI r� ry �list�reverse� enumerate�joinr ) r& �width�ellipsis�leftsider2 �chars� width_so_farr! r' r r r �trim� sB B � � r� c @ s e Zd ZdZdZdZdZdS )� normcasespecsax what a platform's normcase does to ASCII strings This is specified per platform, and should be consistent with what normcase on that platform actually does. lower: normcase lowercases ASCII strings upper: normcase uppercases ASCII strings other: the fallback function should always be called This should be kept in sync with normcase_spec in util.h.���r r N)r; r< r= r> rg rl �otherr r r r r� s r� c C s4 t | �}zt||�W S ty Y nw t�||�S )a� returns a string suitable for JSON JSON is problematic for us because it doesn't support non-Unicode bytes. To deal with this, we take the following approach: - localstr/safelocalstr objects are converted back to UTF-8 - valid UTF-8/ASCII strings are passed as-is - other strings are converted to UTF-8b surrogate encoding - apply JSON-specified string escaping (escapes are doubled in these tests) >>> jsonescape(b'this is a test') 'this is a test' >>> jsonescape(b'escape characters: \0 \x0b \x7f') 'escape characters: \\u0000 \\u000b \\u007f' >>> jsonescape(b'escape characters: \b \t \n \f \r \" \\') 'escape characters: \\b \\t \\n \\f \\r \\" \\\\' >>> jsonescape(b'a weird byte: \xdd') 'a weird byte: \xed\xb3\x9d' >>> jsonescape(b'utf-8: caf\xc3\xa9') 'utf-8: caf\xc3\xa9' >>> jsonescape(b'') '' If paranoid, non-ascii and common troublesome characters are also escaped. This is suitable for web output. >>> s = b'escape characters: \0 \x0b \x7f' >>> assert jsonescape(s) == jsonescape(s, paranoid=True) >>> s = b'escape characters: \b \t \n \f \r \" \\' >>> assert jsonescape(s) == jsonescape(s, paranoid=True) >>> jsonescape(b'escape boundary: \x7e \x7f \xc2\x80', paranoid=True) 'escape boundary: ~ \\u007f \\u0080' >>> jsonescape(b'a weird byte: \xdd', paranoid=True) 'a weird byte: \\udcdd' >>> jsonescape(b'utf-8: caf\xc3\xa9', paranoid=True) 'utf-8: caf\\u00e9' >>> jsonescape(b'non-BMP: \xf0\x9d\x84\x9e', paranoid=True) 'non-BMP: \\ud834\\udd1e' >>> jsonescape(b'<foo@example.org>', paranoid=True) '\\u003cfoo@example.org\\u003e' )�toutf8b�_jsonescapeu8fastr� �charencodepure�jsonescapeu8fallback)r& �paranoid�u8charsr r r � jsonescape$ s . � r� � surrogatepass�strict)r r r r r r r r r r r r r| r| � � c C sP t t| ||d � �d? }|s| ||d � S | ||| � }|�dt� |S )z�get the next full utf-8 character in the given string, starting at pos Raises a UnicodeError if the given location does not start a valid utf-8 character. r r� r )�_utf8len�ordrF � _utf8strict)r& �posr3 r' r r r � getutf8chard s r� c C s" t | t�r| jS t | t�rt| �S t| �r| S d| vr.z | �dt� | W S ty- Y nw t � | �} d}d}t | �}||k r�z,t | |�}d| krOdkrdn nt dt| | � ��dt�}|d7 }n|t |�7 }W n ty� t dt| | � ��dt�}|d7 }Y nw ||7 }||k s?|S ) aB convert a local, possibly-binary string into UTF-8b This is intended as a generic method to preserve data when working with schemes like JSON and XML that have no provision for arbitrary byte strings. As Mercurial often doesn't know what encoding data is in, we use so-called UTF-8b. If a string is already valid UTF-8 (or ASCII), it passes unmodified. Otherwise, unsupported bytes are mapped to UTF-16 surrogate range, uDC00-uDCFF. Principles of operation: - ASCII and UTF-8 data successfully round-trips and is understood by Unicode-oriented clients - filenames and file contents in arbitrary other encodings can have be round-tripped or recovered by clueful clients - local strings that have a cached known UTF-8 encoding (aka localstr) get sent as UTF-8 so Unicode-oriented clients get the Unicode data they want - non-lossy local strings (aka safelocalstr) get sent as UTF-8 as well - because we must preserve UTF-8 bytestring in places such as filenames, metadata can't be roundtripped without help (Note: "UTF-8b" often refers to decoding a mix of valid UTF-8 and arbitrary bytes into an internal Unicode format that can be re-encoded back into the original. Here we are exposing the internal surrogate encoding as a UTF-8 string.) � �r r# r � �� �i � r )rQ r r0 rA rW rE rF r� rI r rM r� r� r r� r �r& rN r� r3 r' r r r r� w s@ � � �� r� c C s� t | �r| S d| vr | S t�| �} d}d}t| �}||k rIt| |�}|t|�7 }d| kr2dkrAn n t�t|�dt��d@ �}||7 }||k s |S )aW Given a UTF-8b string, return a local, possibly-binary string. return the original binary string. This is a round-trip process for strings like filenames, but metadata that's was passed through tolocal will remain in UTF-8. >>> roundtrip = lambda x: fromutf8b(toutf8b(x)) == x >>> m = b"\xc3\xa9\x99abcd" >>> toutf8b(m) '\xc3\xa9\xed\xb2\x99abcd' >>> roundtrip(m) True >>> roundtrip(b"\xc2\xc2\x80") True >>> roundtrip(b"\xef\xbf\xbd") True >>> roundtrip(b"\xef\xef\xbf\xbd") True >>> roundtrip(b"\xf1\x80\x80\x80\x80") True r� r# r r� r� r � ) rE r rM r� r� �bytechrr� rF r� r� r r r � fromutf8b� s �r� )r# F)F)[� __future__r r �localerr �rer� r r r� r r �purer r� r? �typingr r r r r r r r� r � importmodrE rf rj �jsonescapeu8fastr� �sysstrrH �ispy3�chrr �splitr$ �allr( �supports_bytes_environ�_nativeenviron�environ�environb�items�_encodingrewrites� iswindowsro rG �getpreferredencodingr �ErrorrR rJ r. r rA rO rW rX r[ r` rb rd � strmethod�identityrg rl rk �dictrn r) r* �compilerv rs �getcwdbr} rz ry r� r� �objectr� r� r� r� r� r� r� r r r r �<module> s� $ ��� �� E �� f 8 E
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