o Bj0 @szUddlmZddlmZddlmZddlZddlZeZ da de d<dd d Z dd dZ edddZdddZdS)) annotations)Iterator)contextmanagerN base58btcstr_default_encodingreturncCstS)zEReturn the current default multibase encoding (e.g. ``'base58btc'``).)rr r 9/Users/sumanjeet/code/py-libp2p/libp2p/encoding_config.pyget_default_encoding sr encodingNonecCsZt|sdt}td|d|t |aWddS1s&wYdS)u Set the process-wide default multibase encoding. Writes are protected by an internal lock. Reads via :func:`get_default_encoding` are **not** locked, so a concurrent reader may briefly see a stale value. Parameters ---------- encoding : str A multibase encoding name recognised by *py-multibase* (e.g. ``'base58btc'``, ``'base32'``, ``'base64'``, ``'base64url'``, …). Raises ------ ValueError If *encoding* is not supported by *py-multibase*. z, zUnsupported encoding z. Supported encodings: N) multibaseis_encoding_supportedjoinlist_encodings ValueError_lockr)r supportedr r r set_default_encodings "rIterator[None]ccsrt}t|zdVWt |aWddS1swYdSt |aWdw1s3wYw)ur Temporarily override the default encoding within a ``with`` block. The previous encoding is restored when the block exits—even on exceptions. .. warning:: **Thread-safety caveat** The lock is only held for the individual *write* operations (setting and restoring the default), **not** for the entire duration of the ``with`` block. This means that if two threads use ``encoding_override`` concurrently, they can interleave and one thread's override may be visible to the other. For multi-threaded applications that require isolation, prefer passing an explicit *encoding* parameter to ``to_multibase()`` / ``bytes_to_multibase()`` instead of relying on the global default. Parameters ---------- encoding : str A multibase encoding name recognised by *py-multibase*. Raises ------ ValueError If *encoding* is not supported. Example ------- >>> with encoding_override("base32"): ... peer_id.to_multibase() # uses base32 ... >>> peer_id.to_multibase() # back to the previous default N)r rrr)r previousr r r encoding_override3s$(r list[str]cCs ttS)zGReturn a sorted list of all encoding names supported by *py-multibase*.)sortedrrr r r r list_supported_encodingsas r)rr)r rrr )r rrr)rr) __future__rcollections.abcr contextlibr threadingrLockrr__annotations__r rrrr r r r s     ! -