Plan 9 from Bell Labs’s /usr/web/sources/contrib/bichued/root/sys/lib/python/codecs.pyc

Copyright © 2021 Plan 9 Foundation.
Distributed under the MIT License.
Download the Plan 9 distribution.


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o%dZ1dZ2dZ3dZ4dZ5nXdJZ7e7oddk8Z8ne9dKjo4e%ei:dLdM�e_:e%ei;dMdL�e_;ndS(Qs� codecs -- Python Codec Registry, API and helpers.


Written by Marc-Andre Lemburg ([email protected]).

(c) Copyright CNRI, All Rights Reserved. NO WARRANTY.

i�N(t*s%Failed to load the builtin codecs: %stregistertlookuptopentEncodedFiletBOMtBOM_BEtBOM_LEtBOM32_BEtBOM32_LEtBOM64_BEtBOM64_LEtBOM_UTF8t	BOM_UTF16tBOM_UTF16_LEtBOM_UTF16_BEt	BOM_UTF32tBOM_UTF32_LEtBOM_UTF32_BEt
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__module__t__name__Rtid(R&((s/sys/lib/python/codecs.pyt__repr__YsN(R)R(tNoneRR+(((s/sys/lib/python/codecs.pyRKstCodeccBs&eZdZdd�Zdd�ZRS(s� Defines the interface for stateless encoders/decoders.

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         'ignore' - ignore the character and continue with the next
         'replace' - replace with a suitable replacement character;
                    Python will use the official U+FFFD REPLACEMENT
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         'xmlcharrefreplace' - Replace with the appropriate XML
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            The encoder must be able to handle zero length input and
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            errors defines the error handling to apply. It defaults to
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            The method may not store state in the Codec instance. Use
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	tStreamWritercBsMeZdd�Zd�Zd�Zd�Zed�Zd�Zd�Z	RS(R.cCs||_||_dS(s[ Creates a StreamWriter instance.

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             'strict' - raise a ValueError (or a subclass)
             'ignore' - ignore the character and continue with the next
             'replace'- replace with a suitable replacement character
             'xmlcharrefreplace' - Replace with the appropriate XML
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             'backslashreplace'  - Replace with backslashed escape
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            parameters are predefined:

             'strict' - raise a ValueError (or a subclass)
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            size indicates the approximate maximum number of bytes to
            read from the stream for decoding purposes. The decoder
            can modify this setting as appropriate. The default value
            -1 indicates to read and decode as much as possible.  size
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            If firstline is true, and a UnicodeDecodeError happens
            after the first line terminator in the input only the first line
            will be returned, the rest of the input will be kept until the
            next call to read().

            The method should use a greedy read strategy meaning that
            it should read as much data as is allowed within the
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c	Csm|iop|id}|id=t|i�djo|id|_d|_n|p|it�d}n|Sn|pd}d}x�to�|i|dt�}|o4|id�o ||idddd�7}q�n||7}|it�}|ot|�djo�|d}|d=t|�djo)|d	c|i7<||_d|_n|d|i|_|p|it�d}nPn|d}|dit�d}||jo9di	|d�|i|_|o
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cCs|i�}|i|�S(sZ Read all lines available on the input stream
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cCs%|i�}|o|Snt�dS(s4 Return the next decoded line from the input stream.N(Rit
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			tStreamReaderWritercBs�eZdZdZdd�Zdd�Zdd�Zdd�Zd�Z	d	�Z
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        N(RCtreadertwriterR1(R&RCtReadertWriterR1((s/sys/lib/python/codecs.pyR6Vs
	i�cCs|ii|�S(N(RtRW(R&R[((s/sys/lib/python/codecs.pyRWhscCs|ii|�S(N(RtRi(R&R[((s/sys/lib/python/codecs.pyRilscCs|ii|�S(N(RtRk(R&Rj((s/sys/lib/python/codecs.pyRkpscCs
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�Zd�Zd�ZRS(sE StreamRecoder instances provide a frontend - backend
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        They use the complete set of APIs returned by the
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        Data written to the stream is first decoded into an
        intermediate format (which is dependent on the given codec
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            writing to the stream).

            You can use these objects to do transparent direct
            recodings from e.g. latin-1 to utf-8 and back.

            stream must be a file-like object.

            encode, decode must adhere to the Codec interface, Reader,
            Writer must be factory functions or classes providing the
            StreamReader, StreamWriter interface resp.

            encode and decode are needed for the frontend translation,
            Reader and Writer for the backend translation. Unicode is
            used as intermediate encoding.

            Error handling is done in the same way as defined for the
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        N(RCRR RtRuR1(R&RCRR RvRwR1((s/sys/lib/python/codecs.pyR6�s			i�cCs1|ii|�}|i||i�\}}|S(N(RtRWRR1(R&R[R<tbytesencoded((s/sys/lib/python/codecs.pyRW�scCsQ|djo|ii�}n|ii|�}|i||i�\}}|S(N(R,RtRiRR1(R&R[R<Rz((s/sys/lib/python/codecs.pyRi�s

cCs7|ii�}|i||i�\}}|id�S(Ni(RtRWRR1RZ(R&RjR<Rz((s/sys/lib/python/codecs.pyRk�scCs.|ii�}|i||i�\}}|S(s4 Return the next decoded line from the input stream.(RtRpRR1(R&R<Rz((s/sys/lib/python/codecs.pyRp�scCs|S(N((R&((s/sys/lib/python/codecs.pyRq�scCs+|i||i�\}}|ii|�S(N(R R1RuRD(R&R<tbytesdecoded((s/sys/lib/python/codecs.pyRD�scCs:di|�}|i||i�\}}|ii|�S(NR4(RFR R1RuRD(R&RGR<R{((s/sys/lib/python/codecs.pyRH�scCs|ii�|ii�dS(N(RtR8Ru(R&((s/sys/lib/python/codecs.pyR8�s
cCs||i|�S(s? Inherit all other methods from the underlying stream.
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file_encodingR6RWR,RiRkRpRqRDRHR8RIRJRKRP(((s/sys/lib/python/codecs.pyRy�s 							trbR.icCs�|dj	od|jo|d}nti|||�}|djo|Snt|�}t||i|i|�}||_|S(s� Open an encoded file using the given mode and return
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        Unicode as well.

        Files are always opened in binary mode, even if no binary mode
        was specified. This is done to avoid data loss due to encodings
        using 8-bit values. The default file mode is 'rb' meaning to
        open the file in binary read mode.

        encoding specifies the encoding which is to be used for the
        file.

        errors may be given to define the error handling. It defaults
        to 'strict' which causes ValueErrors to be raised in case an
        encoding error occurs.

        buffering has the same meaning as for the builtin open() API.
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        The returned wrapped file object provides an extra attribute
        .encoding which allows querying the used encoding. This
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    tbN(R,t__builtin__RRRrR$R#Rx(tfilenametmodeRxR1t	bufferingtfiletinfotsrw((s/sys/lib/python/codecs.pyRs


	cCsl|djo
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        Strings written to the wrapped file are interpreted according
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        will usually be Unicode but depends on the specified codecs.

        Strings are read from the file using file_encoding and then
        passed back to the caller as string using data_encoding.

        If file_encoding is not given, it defaults to data_encoding.

        errors may be given to define the error handling. It defaults
        to 'strict' which causes ValueErrors to be raised in case an
        encoding error occurs.

        The returned wrapped file object provides two extra attributes
        .data_encoding and .file_encoding which reflect the given
        parameters of the same name. The attributes can be used for
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    N(	R,RRyRR R$R#R|R}(R�R|R}R1t	data_infot	file_infotsr((s/sys/lib/python/codecs.pyR:s

		cCs
t|�iS(s� Lookup up the codec for the given encoding and return
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cCs0t|�i}|djot|��n|S(s� Lookup up the codec for the given encoding and return
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    Encoding iterator.

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cCs%h}x|D]}|||<q
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        Return a dictionary where elements of the rng sequence are
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        If a target mapping in the decoding map occurs multiple
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        One example where this happens is cp875.py which decodes
        multiple character to \u001a.

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