((15&_)!==C){t.msg="unknown compression method",a.mode=ot;break}if(_>>>=4,dt-=4,yt=8+(15&_),0===a.wbits)a.wbits=yt;else if(yt>a.wbits){t.msg="invalid window size",a.mode=ot;break}a.dmax=1<<yt,t.adler=a.check=1,a.mode=512&_?j:M,_=0,dt=0;break;case O:for(;dt<16;){if(0===l)break t;l--,_+=n[s++]<<dt,dt+=8}if(a.flags=_,(255&a.flags)!==C){t.msg="unknown compression method",a.mode=ot;break}if(57344&a.flags){t.msg="unknown header flags set",a.mode=ot;break}a.head&&(a.head.text=_>>8&1),512&a.flags&&(Et[0...