From 84ebfa56c4c31abe9dba6f9c8c827aa11fe883ff Mon Sep 17 00:00:00 2001
From: ema <mccoy39082@163.com>
Date: Tue, 28 Apr 2026 03:58:49 +0800
Subject: [PATCH] Stream CHM via HTTP handler and remove Helper

---
 .../ChmWebpagePanel.cs                        | 28 +++++-----
 .../QuickLook.Plugin.ChmViewer/Helper.cs      | 52 -------------------
 .../Resources/chm2html.html                   |  8 +--
 3 files changed, 16 insertions(+), 72 deletions(-)
 delete mode 100644 QuickLook.Plugin/QuickLook.Plugin.ChmViewer/Helper.cs

diff --git a/QuickLook.Plugin/QuickLook.Plugin.ChmViewer/ChmWebpagePanel.cs b/QuickLook.Plugin/QuickLook.Plugin.ChmViewer/ChmWebpagePanel.cs
index 40ec419..07f0b0b 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.ChmViewer/ChmWebpagePanel.cs
+++ b/QuickLook.Plugin/QuickLook.Plugin.ChmViewer/ChmWebpagePanel.cs
@@ -27,9 +27,11 @@ namespace QuickLook.Plugin.ChmViewer;
 
 public class ChmWebpagePanel : WebpagePanel
 {
-    private const string _resourcePrefix = "QuickLook.Plugin.ChmViewer.Resources.";
-    private static readonly Dictionary<string, byte[]> _resources = [];
-    private readonly byte[] _homePage;
+    protected const string _resourcePrefix = "QuickLook.Plugin.ChmViewer.Resources.";
+    protected internal static readonly Dictionary<string, byte[]> _resources = [];
+    protected readonly byte[] _homePage;
+
+    protected string _path;
 
     static ChmWebpagePanel()
     {
@@ -68,15 +70,9 @@ public class ChmWebpagePanel : WebpagePanel
 
     public void PreviewCompiledHtmlHelp(string path)
     {
-        FallbackPath = Path.GetDirectoryName(path);
+        _path = path;
 
-        var chmFileUrl = Helper.FilePathToFileUrl(path);
-        var pluginUri = new Uri($"file://quicklook/?plugin=1&chm={Uri.EscapeDataString(chmFileUrl.AbsoluteUri)}");
-
-        var chmFile = File.ReadAllBytes(path); // Preload the CHM file to improve performance when the WebView requests it later
-        _resources.Add(Uri.EscapeDataString(chmFileUrl.AbsoluteUri), chmFile);
-
-        NavigateToUri(pluginUri);
+        NavigateToUri(new Uri("http://quicklook/?plugin=1&chm=http://quicklook/.chm"));
     }
 
     protected override void WebView_WebResourceRequested(object sender, Microsoft.Web.WebView2.Core.CoreWebView2WebResourceRequestedEventArgs args)
@@ -87,21 +83,21 @@ public class ChmWebpagePanel : WebpagePanel
         {
             var requestedUri = new Uri(args.Request.Uri);
 
-            if (requestedUri.Scheme == "file")
+            if (requestedUri.Scheme == "http")
             {
                 string absolutePath = Uri.UnescapeDataString(requestedUri.AbsolutePath);
 
-                if (absolutePath.StartsWith("/?plugin=1"))
+                if (absolutePath == "/")
                 {
                     var response = _webView.CoreWebView2.Environment.CreateWebResourceResponse(
                         new MemoryStream(_homePage), 200, "OK", MimeTypes.GetContentType(".html"));
                     args.Response = response;
                 }
-                else if (ContainsKey(requestedUri.AbsolutePath))
+                else if (absolutePath == "/.chm")
                 {
-                    var stream = ReadStream(requestedUri.AbsolutePath);
+                    Stream stream = new FileStream(_path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite | FileShare.Delete);
                     var response = _webView.CoreWebView2.Environment.CreateWebResourceResponse(
-                        stream, 200, "OK", MimeTypes.GetContentType(Path.GetExtension(requestedUri.AbsolutePath)));
+                        stream, 200, "OK", MimeTypes.GetContentType(Path.GetExtension(".chm")));
                     args.Response = response;
                 }
                 else
diff --git a/QuickLook.Plugin/QuickLook.Plugin.ChmViewer/Helper.cs b/QuickLook.Plugin/QuickLook.Plugin.ChmViewer/Helper.cs
deleted file mode 100644
index 4ed82fc..0000000
--- a/QuickLook.Plugin/QuickLook.Plugin.ChmViewer/Helper.cs
+++ /dev/null
@@ -1,52 +0,0 @@
-// Copyright © 2017-2026 QL-Win Contributors
-//
-// This file is part of QuickLook program.
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-using System;
-using System.IO;
-using System.Text;
-
-namespace QuickLook.Plugin.ChmViewer;
-
-internal static class Helper
-{
-    public static Uri FilePathToFileUrl(string filePath)
-    {
-        var uri = new StringBuilder();
-        foreach (var v in filePath)
-            if (v >= 'a' && v <= 'z' || v >= 'A' && v <= 'Z' || v >= '0' && v <= '9' ||
-                v == '+' || v == '/' || v == ':' || v == '.' || v == '-' || v == '_' || v == '~' ||
-                v > '\x80')
-                uri.Append(v);
-            else if (v == Path.DirectorySeparatorChar || v == Path.AltDirectorySeparatorChar)
-                uri.Append('/');
-            else
-                uri.Append($"%{(int)v:X2}");
-        if (uri.Length >= 2 && uri[0] == '/' && uri[1] == '/') // UNC path - Universal Naming Convention
-            uri.Insert(0, "file:");
-        else
-            uri.Insert(0, "file:///");
-
-        try
-        {
-            return new Uri(uri.ToString());
-        }
-        catch
-        {
-            return null;
-        }
-    }
-}
diff --git a/QuickLook.Plugin/QuickLook.Plugin.ChmViewer/Resources/chm2html.html b/QuickLook.Plugin/QuickLook.Plugin.ChmViewer/Resources/chm2html.html
index 70666b3..df76763 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.ChmViewer/Resources/chm2html.html
+++ b/QuickLook.Plugin/QuickLook.Plugin.ChmViewer/Resources/chm2html.html
@@ -7,8 +7,8 @@
   <script>window.__CHM2HTML_PLUGIN = true;</script>
   
 <script type="module">
-// inlined assets/app-B1f0-Pbl.js
-(function(){const t=document.createElement("link").relList;if(t&&t.supports&&t.supports("modulepreload"))return;for(const s of document.querySelectorAll('link[rel="modulepreload"]'))r(s);new MutationObserver(s=>{for(const i of s)if(i.type==="childList")for(const o of i.addedNodes)o.tagName==="LINK"&&o.rel==="modulepreload"&&r(o)}).observe(document,{childList:!0,subtree:!0});function n(s){const i={};return s.integrity&&(i.integrity=s.integrity),s.referrerPolicy&&(i.referrerPolicy=s.referrerPolicy),s.crossOrigin==="use-credentials"?i.credentials="include":s.crossOrigin==="anonymous"?i.credentials="omit":i.credentials="same-origin",i}function r(s){if(s.ep)return;s.ep=!0;const i=n(s);fetch(s.href,i)}})();const et="modulepreload",tt=function(e){return"/"+e},_e={},nt=function(t,n,r){let s=Promise.resolve();if(n&&n.length>0){let o=function(l){return Promise.all(l.map(f=>Promise.resolve(f).then(d=>({status:"fulfilled",value:d}),d=>({status:"rejected",reason:d}))))};document.getElementsByTagName("link");const a=document.querySelector("meta[property=csp-nonce]"),c=a?.nonce||a?.getAttribute("nonce");s=o(n.map(l=>{if(l=tt(l),l in _e)return;_e[l]=!0;const f=l.endsWith(".css"),d=f?'[rel="stylesheet"]':"";if(document.querySelector(`link[href="${l}"]${d}`))return;const h=document.createElement("link");if(h.rel=f?"stylesheet":et,f||(h.as="script"),h.crossOrigin="",h.href=l,c&&h.setAttribute("nonce",c),document.head.appendChild(h),f)return new Promise((w,v)=>{h.addEventListener("load",w),h.addEventListener("error",()=>v(new Error(`Unable to preload CSS for ${l}`)))})}))}function i(o){const a=new Event("vite:preloadError",{cancelable:!0});if(a.payload=o,window.dispatchEvent(a),!a.defaultPrevented)throw o}return s.then(o=>{for(const a of o||[])a.status==="rejected"&&i(a.reason);return t().catch(i)})};class C{view;_offset;constructor(t,n=0){this.view=new DataView(t.buffer,t.byteOffset,t.byteLength),this._offset=n}get offset(){return this._offset}get remaining(){return this.view.byteLength-this._offset}readUint8(){if(this._offset+1>this.view.byteLength)throw new RangeError(`BufferReader: read past end (offset=${this._offset}, need 1)`);const t=this.view.getUint8(this._offset);return this._offset+=1,t}readInt16LE(){if(this._offset+2>this.view.byteLength)throw new RangeError(`BufferReader: read past end (offset=${this._offset}, need 2)`);const t=this.view.getInt16(this._offset,!0);return this._offset+=2,t}readUint16LE(){if(this._offset+2>this.view.byteLength)throw new RangeError(`BufferReader: read past end (offset=${this._offset}, need 2)`);const t=this.view.getUint16(this._offset,!0);return this._offset+=2,t}readInt32LE(){if(this._offset+4>this.view.byteLength)throw new RangeError(`BufferReader: read past end (offset=${this._offset}, need 4)`);const t=this.view.getInt32(this._offset,!0);return this._offset+=4,t}readUint32LE(){if(this._offset+4>this.view.byteLength)throw new RangeError(`BufferReader: read past end (offset=${this._offset}, need 4)`);const t=this.view.getUint32(this._offset,!0);return this._offset+=4,t}readBigInt64LE(){if(this._offset+8>this.view.byteLength)throw new RangeError(`BufferReader: read past end (offset=${this._offset}, need 8)`);const t=this.view.getBigInt64(this._offset,!0);return this._offset+=8,t}readBigUint64LE(){if(this._offset+8>this.view.byteLength)throw new RangeError(`BufferReader: read past end (offset=${this._offset}, need 8)`);const t=this.view.getBigUint64(this._offset,!0);return this._offset+=8,t}readBytes(t){if(this._offset+t>this.view.byteLength)throw new RangeError(`BufferReader: read past end (offset=${this._offset}, need ${t})`);const n=new Uint8Array(this.view.buffer,this.view.byteOffset+this._offset,t);return this._offset+=t,n.slice()}readAscii(t){const n=this.readBytes(t);return String.fromCharCode(...n)}skip(t){if(this._offset+t>this.view.byteLength)throw new RangeError(`BufferReader: skip past end (offset=${this._offset}, skip ${t})`);this._offset+=t}readCWord(){let t=0n,n;for(;(n=this.readUint8())>=128;)t<<=7n,t+=BigInt(n&127);return(t<<7n)+BigInt(n)}}const Re=88,Te=96;function rt(e){if(e.length!==Re&&e.length!==Te)throw new Error(`ITSF header: unexpected length ${e.length}`);const t=new C(e),n=t.readAscii(4),r=t.readInt32LE(),s=t.readInt32LE();t.readInt32LE();const i=t.readUint32LE(),o=t.readUint32LE(),a=t.readBytes(16),c=t.readBytes(16),l=t.readBigUint64LE(),f=t.readBigUint64LE(),d=t.readBigUint64LE(),h=t.readBigUint64LE();if(n!=="ITSF")throw new Error(`ITSF header: bad signature "${n}"`);if(r===2){if(s<Re)throw new Error(`ITSF v2 header too short: ${s}`)}else if(r===3){if(s<Te)throw new Error(`ITSF v3 header too short: ${s}`)}else throw new Error(`ITSF header: unsupported version ${r}`);let w;if(r===3){if(t.remaining<8)throw new Error("ITSF v3 header: missing data_offset field");w=t.readBigUint64LE()}else w=d+h;return{signature:n,version:r,headerLen:s,lastModified:i,langId:o,dirUuid:a,streamUuid:c,unknownOffset:l,unknownLen:f,dirOffset:d,dirLen:h,dataOffset:w}}const ke=84;function st(e){if(e.length!==ke)throw new Error(`ITSP header: unexpected length ${e.length}`);const t=new C(e),n=t.readAscii(4),r=t.readInt32LE(),s=t.readInt32LE();t.readInt32LE();const i=t.readUint32LE();t.readInt32LE(),t.readInt32LE();const o=t.readInt32LE(),a=t.readInt32LE();t.readInt32LE();const c=t.readUint32LE();t.readInt32LE();const l=t.readUint32LE(),f=t.readBytes(16);if(t.readBytes(16),n!=="ITSP")throw new Error(`ITSP header: bad signature "${n}"`);if(r!==1)throw new Error(`ITSP header: unsupported version ${r}`);if(s!==ke)throw new Error(`ITSP header: unexpected headerLen ${s}`);return{signature:n,version:r,headerLen:s,blockLen:i,blockidxIntvl:0,indexDepth:0,indexRoot:o,indexHead:a,numBlocks:c,langId:l,systemUuid:f}}function Se(e){if(e.length<20)throw new Error(`PMGL header: too short (${e.length})`);const t=new C(e),n=t.readAscii(4),r=t.readUint32LE();t.readUint32LE();const s=t.readInt32LE(),i=t.readInt32LE();if(n!=="PMGL")throw new Error(`PMGL header: bad signature "${n}"`);return{signature:n,freeSpace:r,blockPrev:s,blockNext:i}}function it(e){if(e.length<8)throw new Error(`PMGI header: too short (${e.length})`);const t=new C(e),n=t.readAscii(4),r=t.readUint32LE();if(n!=="PMGI")throw new Error(`PMGI header: bad signature "${n}"`);return{signature:n,freeSpace:r}}const ot=40;function at(e){if(e.length!==ot)throw new Error(`LZXC reset table: unexpected length ${e.length}`);const t=new C(e),n=t.readUint32LE(),r=t.readUint32LE();t.readUint32LE();const s=t.readUint32LE(),i=t.readBigUint64LE(),o=t.readBigUint64LE(),a=t.readBigUint64LE();if(n!==2)throw new Error(`LZXC reset table: unsupported version ${n}`);return{version:n,blockCount:r,tableOffset:s,uncompressedLen:i,compressedLen:o,blockLen:a}}const ct=24,lt=28;function ft(e){if(e.length<ct)throw new Error(`LZXC control data: too short (${e.length})`);const t=new C(e),n=t.readUint32LE(),r=t.readAscii(4),s=t.readUint32LE();let i=t.readUint32LE(),o=t.readUint32LE();const a=t.readUint32LE();if(e.length>=lt&&t.readUint32LE(),r!=="LZXC")throw new Error(`LZXC control data: bad signature "${r}"`);if(s===2&&(i*=32768,o*=32768),o===0||i===0)throw new Error("LZXC control data: zero windowSize or resetInterval");if(o===1)throw new Error("LZXC control data: windowSize is 1");if(i%(o/2)!==0)throw new Error("LZXC control data: resetInterval not a multiple of windowSize/2");return{size:n,signature:r,version:s,resetInterval:i,windowSize:o,windowsPerReset:a}}const Ie=2,F=256,Ce=1,Ae=2,fe=3,dt=20,Q=7,Ge=249,ne=6,j=dt,re=12,V=F+400,se=12,q=Ge+1,ie=7,Y=8,ee=64,de=32,xe=new Uint8Array([0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17]),Ne=new Uint32Array([0,1,2,3,4,6,8,12,16,24,32,48,64,96,128,192,256,384,512,768,1024,1536,2048,3072,4096,6144,8192,12288,16384,24576,32768,49152,65536,98304,131072,196608,262144,393216,524288,655360,786432,917504,1048576,1179648,1310720,1441792,1572864,1703936,1835008,1966080,2097152]);function te(e,t,n,r){let s,i=1,o=0,a=1<<t,c=a>>1,l=c;for(;i<=t;){for(let f=0;f<e;f++)if(n[f]===i){if(s=o,(o+=c)>a)return 1;let d=c;for(;d-- >0;)r[s++]=f}c>>=1,i++}if(o!==a){for(let f=o;f<a;f++)r[f]=0;for(o<<=16,a<<=16,c=32768;i<=16;){for(let f=0;f<e;f++)if(n[f]===i){s=o>>16;for(let d=0;d<i-t;d++)r[s]===0&&(r[l<<1]=0,r[(l<<1)+1]=0,r[s]=l++),s=r[s]<<1,o>>15-d&1&&s++;if(r[s]=f,(o+=c)>a)return 1}c>>=1,i++}}if(o===a)return 0;for(let f=0;f<e;f++)if(n[f])return 1;return 0}class ut{window;windowSize;actualSize;windowPosn;R0;R1;R2;mainElements;headerRead;blockType;blockLength;blockRemaining;framesRead;intelFilesize;intelCurpos;intelStarted;PRETREE_table;PRETREE_len;MAINTREE_table;MAINTREE_len;LENGTH_table;LENGTH_len;ALIGNED_table;ALIGNED_len;constructor(t){if(t<15||t>21)throw new RangeError(`LZXState: invalid window size bits ${t} (must be 15-21)`);const n=1<<t;let r;t===20?r=42:t===21?r=50:r=t<<1,this.window=new Uint8Array(n),this.windowSize=n,this.actualSize=n,this.windowPosn=0,this.R0=this.R1=this.R2=1,this.mainElements=F+(r<<3),this.headerRead=!1,this.framesRead=0,this.blockRemaining=0,this.blockType=0,this.blockLength=0,this.intelCurpos=0,this.intelStarted=!1,this.intelFilesize=0,this.PRETREE_table=new Uint16Array((1<<ne)+(j<<1)),this.PRETREE_len=new Uint8Array(j+ee),this.MAINTREE_table=new Uint16Array((1<<re)+(V<<1)),this.MAINTREE_len=new Uint8Array(V+ee),this.LENGTH_table=new Uint16Array((1<<se)+(q<<1)),this.LENGTH_len=new Uint8Array(q+ee),this.ALIGNED_table=new Uint16Array((1<<ie)+(Y<<1)),this.ALIGNED_len=new Uint8Array(Y+ee)}reset(){this.R0=this.R1=this.R2=1,this.headerRead=!1,this.framesRead=0,this.blockRemaining=0,this.blockType=0,this.intelCurpos=0,this.intelStarted=!1,this.windowPosn=0,this.MAINTREE_len.fill(0),this.LENGTH_len.fill(0)}}const ge=0,ht=1,T=2;function Ue(e,t,n,r,s){const i=e.window,o=e.windowSize;let a=e.windowPosn,c=e.R0,l=e.R1,f=e.R2,d=0,h=0,w=0;const v=r;function k(g){for(;h<g;){const E=w<r?t[w]:0,L=w+1<r?t[w+1]:0;d=(d|(L<<8|E)<<de-16-h)>>>0,h+=16,w+=2}}function U(g){return d>>>de-g>>>0}function A(g){d=d<<g>>>0,h-=g}function p(g){k(g);const E=U(g);return A(g),E}function y(g,E,L,m){k(16);let u=g[U(L)];if(u>=m){let I=1<<de-L;do{if(I>>>=1,u<<=1,u|=d&I?1:0,!I)return-1;u=g[u]}while(u>=m)}const b=E[u];return A(b),u}function B(g,E,L){for(let u=0;u<20;u++)e.PRETREE_len[u]=p(4);if(te(j,ne,e.PRETREE_len,e.PRETREE_table))return!0;let m=E;for(;m<L;){const u=y(e.PRETREE_table,e.PRETREE_len,ne,j);if(u<0)return!0;if(u===17){let b=p(4)+4;for(;b-- >0;)g[m++]=0}else if(u===18){let b=p(5)+20;for(;b-- >0;)g[m++]=0}else if(u===19){let b=p(1)+4;const I=y(e.PRETREE_table,e.PRETREE_len,ne,j);if(I<0)return!0;let S=g[m]-I;for(S<0&&(S+=17);b-- >0;)g[m++]=S}else{let b=g[m]-u;b<0&&(b+=17),g[m++]=b}}return!1}let _=s;if(!e.headerRead){let g=0,E=0;p(1)&&(g=p(16),E=p(16)),e.intelFilesize=g<<16|E,e.headerRead=!0}for(;_>0;){if(e.blockRemaining===0){e.blockType===fe&&(e.blockLength&1&&w++,h=0,d=0),e.blockType=p(3);const g=p(16),E=p(8);switch(e.blockRemaining=e.blockLength=g<<8|E,e.blockType){case Ae:for(let L=0;L<8;L++)e.ALIGNED_len[L]=p(3);if(te(Y,ie,e.ALIGNED_len,e.ALIGNED_table))return T;case Ce:if(B(e.MAINTREE_len,0,256)||B(e.MAINTREE_len,256,e.mainElements)||te(V,re,e.MAINTREE_len,e.MAINTREE_table)||(e.MAINTREE_len[232]!==0&&(e.intelStarted=!0),B(e.LENGTH_len,0,Ge))||te(q,se,e.LENGTH_len,e.LENGTH_table))return T;break;case fe:e.intelStarted=!0,k(16),h>16&&(w-=2),c=(t[w]|t[w+1]<<8|t[w+2]<<16|t[w+3]<<24)>>>0,w+=4,l=(t[w]|t[w+1]<<8|t[w+2]<<16|t[w+3]<<24)>>>0,w+=4,f=(t[w]|t[w+1]<<8|t[w+2]<<16|t[w+3]<<24)>>>0,w+=4;break;default:return T}}if(w>v&&(w>v+2||h<16))return T;for(;e.blockRemaining>0&&_>0;){let g=e.blockRemaining;if(g>_&&(g=_),_-=g,e.blockRemaining-=g,a&=o-1,a+g>o)return ht;switch(e.blockType){case Ce:for(;g>0;){const E=y(e.MAINTREE_table,e.MAINTREE_len,re,V);if(E<0)return T;if(E<F)i[a++]=E,g--;else{const L=E-F;let m=L&Q;if(m===Q){const S=y(e.LENGTH_table,e.LENGTH_len,se,q);if(S<0)return T;m+=S}m+=Ie;let u=L>>3;if(u>2){if(u!==3){const S=xe[u],O=p(S);u=Ne[u]-2+O}else u=1;f=l,l=c,c=u}else u===0?u=c:u===1?(u=l,l=c,c=u):(u=f,f=c,c=u);let b=a,I=b-u;if(a+=m,a>o)return T;for(g-=m;I<0&&m-- >0;)i[b++]=i[I+o],I++;for(;m-- >0;)i[b++]=i[I++]}}break;case Ae:for(;g>0;){const E=y(e.MAINTREE_table,e.MAINTREE_len,re,V);if(E<0)return T;if(E<F)i[a++]=E,g--;else{const L=E-F;let m=L&Q;if(m===Q){const S=y(e.LENGTH_table,e.LENGTH_len,se,q);if(S<0)return T;m+=S}m+=Ie;let u=L>>3;if(u>2){const S=xe[u];if(u=Ne[u]-2,S>3){const O=p(S-3);u+=O<<3;const ve=y(e.ALIGNED_table,e.ALIGNED_len,ie,Y);if(ve<0)return T;u+=ve}else if(S===3){const O=y(e.ALIGNED_table,e.ALIGNED_len,ie,Y);if(O<0)return T;u+=O}else if(S>0){const O=p(S);u+=O}else u=1;f=l,l=c,c=u}else u===0?u=c:u===1?(u=l,l=c,c=u):(u=f,f=c,c=u);let b=a,I=b-u;if(a+=m,a>o)return T;for(g-=m;I<0&&m-- >0;)i[b++]=i[I+o],I++;for(;m-- >0;)i[b++]=i[I++]}}break;case fe:if(w+g>v)return T;i.set(t.subarray(w,w+g),a),w+=g,a+=g;break;default:return T}}}if(_!==0)return T;const R=(a===0?o:a)-s;if(n.set(i.subarray(R,R+s),0),e.windowPosn=a,e.R0=c,e.R1=l,e.R2=f,e.framesRead++<32768&&e.intelFilesize!==0)if(s<=6||!e.intelStarted)e.intelCurpos+=s;else{let g=0;const E=s-10;let L=e.intelCurpos;const m=e.intelFilesize;for(e.intelCurpos=L+s;g<E;){if(n[g++]!==232){L++;continue}const u=n[g]|n[g+1]<<8|n[g+2]<<16|n[g+3]<<24;if(u>=-L&&u<m){const 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after reset`),this.lzxState.reset(),c=Ue(this.lzxState,a,s,Number(o),n),c!==ge)){const l=Array.from(a.subarray(0,Math.min(32,a.length))).map(f=>f.toString(16).padStart(2,"0")).join(" ");throw new Error(`LZX decompression failed for block ${t}: code ${c}. firstBytes=${l}`)}this.lzxLastBlock=t}async decompressBlock(t){const n=Number(t);if(!this.lzxState){let s=0,i=this.windowSize;for(;i>1;)i>>>=1,s++;this.lzxState=new ut(s),this.lzxLastBlock=-1}let r=n%this.resetBlkCount;if(n-r<=this.lzxLastBlock&&n>=this.lzxLastBlock&&(r=n-this.lzxLastBlock),r!==0)for(let s=r;s>0;s--){const i=n-s;this.lzxLastBlock!==i&&(i%this.resetBlkCount===0&&this.lzxState.reset(),await this.decompressOneBlock(i))}else n%this.resetBlkCount===0&&this.lzxState.reset();return await this.decompressOneBlock(n),this.cacheBlocks[n%this.cacheNumBlocks]}async decompressRegion(t,n){if(n<=0n)return new Uint8Array(0);const r=this.resetTable.blockLen,s=new Uint8Array(Number(n));let i=0n,o=n,a=t;for(;o>0n;){const c=a/r,l=a%r;let f=o;f>r-l&&(f=r-l);const d=Number(c%BigInt(this.cacheNumBlocks));if(this.cacheBlocks[d]!==null&&this.cacheBlockIndices[d]===c)s.set(this.cacheBlocks[d].subarray(Number(l),Number(l+f)),Number(i));else{const h=await this.decompressBlock(c);s.set(h.subarray(Number(l),Number(l+f)),Number(i))}i+=f,o-=f,a+=f}return s}async*enumerate(t=N.All){let n=this.indexHead;for(;n!==-1;){const r=await this.fetchBytes(this.dirOffset+BigInt(n)*BigInt(this.blockLen),this.blockLen),s=Se(r.subarray(0,20)),i=r.length-s.freeSpace,o=new C(r,20);for(;o.offset<i;){const a=this.parsePmglEntry(o);if(!a)break;a.flags=pt(a.path),Pe(a.flags,t)&&(yield a)}n=s.blockNext}}async*enumerateDir(t,n=N.All){let r=t;r.length>0&&!r.endsWith("/")&&(r+="/");let s=!1;for await(const i of this.enumerate(N.All)){if(s){if(!i.path.toLowerCase().startsWith(r.toLowerCase()))break}else if(i.length===0n&&i.path.toLowerCase().startsWith(r.toLowerCase())){if(s=!0,i.path.length===r.length)continue}else continue;Pe(i.flags,n)&&(yield i)}}async 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