Dh>xddlZddlZddlmZmZejeZGddejZdgZ y)N)ffivips_libc.eZdZdZfdZdZdZxZS) SourceCustomzCustom sources allow reading data from otherwise unsupported sources. Requires libvips `>= 8.9.0`. To use, create a SourceCustom object, then provide callbacks to :meth:`on_read` and :meth:`on_seek`. c|tjdtj}tt ||y)zoMake a new custom source. You can pass this source to (for example) :meth:`new_from_source`. z VipsSource*N)rcastrvips_source_custom_newsuperr__init__)selfsource __class__s v/var/www/fastuser/data/www/generator.snapmosaic.io/flask_app/venv/lib/python3.12/site-packages/pyvips/vsourcecustom.pyr zSourceCustom.__init__s--)H)H)JK lD*62c4fd}|jd|y)a!Attach a read handler. The interface is exactly as io.read(). The handler is given a number of bytes to fetch, and should return a bytes-like object containing up to that number of bytes. If there is no more data available, it should return None. cPt|}|yt|}||d||S)Nr)len)bufchunk bytes_readhandlers rinterface_handlerz/SourceCustom.on_read..interface_handler%s4CH%E}UJ$C   rreadNsignal_connect)r rrs ` ron_readzSourceCustom.on_reads  F$56rc(|jd|y)aAttach a seek handler. The interface is the same as io.seek(), so the handler is passed parameters for offset and whence with the same meanings. However, the handler MUST return the new seek position. A simple way to do this is to call io.tell() and return that result. Seek handlers are optional. If you do not set one, your source will be treated as unseekable and libvips will do extra caching. seekNr)r rs ron_seekzSourceCustom.on_seek1s FG,r)__name__ __module__ __qualname____doc__r rr __classcell__)rs@rrr s37,-rr) loggingpyvipsrr getLoggerr loggerSourcer__all__rrr,s;   8 $6-6==6-r  r