([\\s\\S]*?)<\\/title>/i)?.[1]||\"\").replace(/<[^>]+>/g,\" \").replace(/\\s+/g,\" \").trim();\n const calls=[...h.matchAll(/fileDown\\('([^']+)'\\s*,\\s*'([^']+)'\\s*,\\s*'(\\d+)'\\s*,\\s*'(\\d+)'\\)/g)].map(m=>({filePath:m[1],fileName:m[2],fileSeq:m[3],artlSeq:m[4]}));\n const text=h.replace(/<script[\\s\\S]*?<\\/script>/gi,\" \").replace(/<style[\\s\\S]*?<\\/style>/gi,\" \").replace(/<[^>]+>/g,\" \").replace(/ /g,\" \").replace(/\\s+/g,\" \");\n const hit=/변리사|45회|자연과학개론|민법개론/.test(text);\n if(calls.length||hit) out.push({artl,http:r.status,title,calls,textHit:hit?text.match(/.{0,80}(?:변리사|45회|자연과학개론|민법개론).{0,160}/)?.[0]:null});\n }catch(e){out.push({artl,error:String(e)})}\n}\nconsole.log(JSON.stringify(out)); export default out;",[199],"3deec844-509d-4844-ba9e-922059f41a5f","render_test.ts","01a0acbd-7f43-7437-9e33-2e9703e0f387",["D",1789604495107],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\nimport { createCanvas, DOMMatrix, ImageData, Path2D } from \"npm:@napi-rs/canvas\";\n(globalThis as any).DOMMatrix = DOMMatrix;\n(globalThis as any).ImageData = ImageData;\n(globalThis as any).Path2D = Path2D;\nconst pdfjsLib = await import(\"npm:pdfjs-dist/legacy/build/pdf.mjs\");\n\nconst KEY=\"pb/2020-r57-natural-science-a/exact.pdf\";\nconst SOURCE_SHA=\"96a5df8ffd5811f3f4a0477614ccdfb516aa22b8cc03e8c4647500a3a4d86b87\";\nconst res=await blob.get(KEY);\nconst bytes=new Uint8Array(await res.arrayBuffer());\nconst pdf=await pdfjsLib.getDocument({data:bytes,disableWorker:true}).promise;\nconst page=await pdf.getPage(1);\nconst viewport=page.getViewport({scale:1.5});\nconst canvas=createCanvas(Math.ceil(viewport.width),Math.ceil(viewport.height));\nconst ctx=canvas.getContext(\"2d\");\nawait page.render({canvasContext:ctx as any,viewport}).promise;\nconst out=canvas.toBuffer(\"image/jpeg\",85);\nconst outKey=\"pb/2020-r57-natural-science-a/render/page-01.jpg\";\nawait blob.set(outKey,out);\nconst result={ok:true,page:1,width:canvas.width,height:canvas.height,bytes:out.length,key:outKey,source_sha256:SOURCE_SHA};\nconsole.log(JSON.stringify(result));\nexport default result;",[206],"d2dc7757-64f6-4161-9d31-312c8859dee0","render_mupdf_test.ts","01a0acbd-7f43-7437-9e33-29c4529a6431",["D",1789604495107],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\nimport * as mupdf from \"npm:mupdf\";\n\nconst KEY=\"pb/2020-r57-natural-science-a/exact.pdf\";\nconst SOURCE_SHA=\"96a5df8ffd5811f3f4a0477614ccdfb516aa22b8cc03e8c4647500a3a4d86b87\";\nconst res=await blob.get(KEY);\nconst bytes=new Uint8Array(await res.arrayBuffer());\nconst doc=mupdf.Document.openDocument(bytes,\"application/pdf\");\nconst page=doc.loadPage(0);\nconst pixmap=page.toPixmap(mupdf.Matrix.scale(1.5,1.5),mupdf.ColorSpace.DeviceRGB,false,true);\nconst png=pixmap.asPNG();\nconst outKey=\"pb/2020-r57-natural-science-a/render/page-01.png\";\nawait blob.set(outKey,png);\nconst result={ok:true,pages:doc.countPages(),page:1,png_bytes:png.length,width:pixmap.getWidth(),height:pixmap.getHeight(),key:outKey,source_sha256:SOURCE_SHA};\npixmap.destroy(); page.destroy(); doc.destroy();\nconsole.log(JSON.stringify(result));\nexport default result;",[212],"4546262f-5027-4611-891b-a52475a3b35c","render_all_mupdf.ts","01a0acbd-7f43-7437-9e33-26e029d84ed9",["D",1789604495107],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\nimport * as mupdf from \"npm:mupdf\";\n\nconst KEY=\"pb/2020-r57-natural-science-a/exact.pdf\";\nconst SOURCE_SHA=\"96a5df8ffd5811f3f4a0477614ccdfb516aa22b8cc03e8c4647500a3a4d86b87\";\nfunction hex(buf:ArrayBuffer){return [...new Uint8Array(buf)].map(b=>b.toString(16).padStart(2,\"0\")).join(\"\");}\nasync function sha256(b:Uint8Array){return hex(await crypto.subtle.digest(\"SHA-256\",b));}\nconst res=await blob.get(KEY);\nconst bytes=new Uint8Array(await res.arrayBuffer());\nconst doc=mupdf.Document.openDocument(bytes,\"application/pdf\");\nconst pages:any[]=[];\nfor(let i=0;i<doc.countPages();i++){\n const page=doc.loadPage(i);\n const pixmap=page.toPixmap(mupdf.Matrix.scale(1.5,1.5),mupdf.ColorSpace.DeviceRGB,false,true);\n const png=pixmap.asPNG();\n const digest=await sha256(png);\n const key=`pb/2020-r57-natural-science-a/render/page-${String(i+1).padStart(2,\"0\")}.png`;\n await blob.set(key,png);\n pages.push({page:i+1,width:pixmap.getWidth(),height:pixmap.getHeight(),bytes:png.length,sha256:digest,key,source_sha256:SOURCE_SHA});\n pixmap.destroy(); page.destroy();\n}\ndoc.destroy();\nconst result={ok:true,source_sha256:SOURCE_SHA,render_engine:\"mupdf wasm\",scale:1.5,page_count:pages.length,pages};\nawait blob.setJSON(\"pb/2020-r57-natural-science-a/render/manifest.json\",result);\nconsole.log(JSON.stringify(result));\nexport default result;",[218],"403714de-f0df-42d2-b547-1a535b366d2a","recover.ts","01a0acbd-7f43-7437-9e33-213ca8eaff45",["D",1789604495107],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\n\nconst TARGET = {\n bytes: 68_482_517,\n sha256: \"e2ada3e94f70fd257428cc3bd08a7aa44af7ddb1a0a94860af3aee23b52d87e9\",\n filename: \"(등재) 제57회 변리사 1차 문제지 원본(PDF).zip\",\n artlSeq: \"5207047\",\n fileSeq: \"2194931\",\n filePath: \"bbs/Q004/Q004_2194931\",\n};\nconst KEY=\"pb/2020-r57-first-stage-parent/exact.zip\";\nconst QBASE=\"https://www.q-net.or.kr\";\nconst UA=\"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36\";\n\nfunction hex(buf:ArrayBuffer){return [...new Uint8Array(buf)].map(b=>b.toString(16).padStart(2,\"0\")).join(\"\");}\nasync function sha256(b:Uint8Array){return hex(await crypto.subtle.digest(\"SHA-256\",b));}\nfunction cookieLine(headers:Headers){\n const h=headers as Headers & {getSetCookie?:()=>string[]};\n const all=h.getSetCookie?.() ?? (headers.get(\"set-cookie\")?[headers.get(\"set-cookie\")!]:[]);\n return all.map(s=>s.split(\";\",1)[0]).filter(Boolean).join(\"; \");\n}\nfunction mergeCookies(a:string,b:string){\n const m=new Map<string,string>();\n for(const c of [a,b]) for(const part of c.split(/;\\s*/)){const i=part.indexOf(\"=\");if(i>0)m.set(part.slice(0,i),part.slice(i+1));}\n return [...m].map(([k,v])=>`${k}=${v}`).join(\"; \");\n}\nasync function qFetch(url:string,init:RequestInit={},cookie=\"\"){\n const headers=new Headers(init.headers);\n headers.set(\"user-agent\",UA);\n headers.set(\"accept-language\",\"ko-KR,ko;q=0.9\");\n if(cookie)headers.set(\"cookie\",cookie);\n const res=await fetch(url,{...init,headers,redirect:\"follow\"});\n return {res,cookie:mergeCookies(cookie,cookieLine(res.headers))};\n}\nasync function recover(){\n const t0=Date.now();\n let cookie=\"\";\n let x=await qFetch(`${QBASE}/man001.do?gSite=L&gId=51`,{},cookie); cookie=x.cookie;\n const detailUrl=`${QBASE}/cst003.do?id=cst00302&gSite=L&gId=51`;\n const form=new URLSearchParams({page:\"1\",schType:\"\",schText:\"\",artlSeq:TARGET.artlSeq,boardId:\"Q004\",code:\"1008\",menuType:\"cst00309\",cst:\"\"});\n x=await qFetch(detailUrl,{method:\"POST\",body:form,headers:{\"content-type\":\"application/x-www-form-urlencoded\",referer:detailUrl}},cookie); cookie=x.cookie;\n const detail=await x.res.text();\n const re=/fileDown\\('([^']+)'\\s*,\\s*'([^']+)'\\s*,\\s*'(\\d+)'\\)/g;\n const candidates=[...detail.matchAll(re)].map(m=>({filePath:m[1],fileName:m[2],fileSeq:m[3]}));\n const resolved=candidates.find(z=>z.fileSeq===TARGET.fileSeq) ?? {filePath:TARGET.filePath,fileName:TARGET.filename,fileSeq:TARGET.fileSeq};\n const q=new URLSearchParams({id:\"cst00302s01\",gSite:\"L\",gId:\"51\",fileCode:\"R001\",filePath:resolved.filePath,fileName:resolved.fileName,fileSeq:resolved.fileSeq,artlSeq:TARGET.artlSeq,href:\"0\"});\n const dl=`${QBASE}/cst003.do?${q.toString()}`;\n x=await qFetch(dl,{headers:{referer:detailUrl,accept:\"application/zip,application/octet-stream,*/*;q=0.8\"}},cookie);\n const contentType=x.res.headers.get(\"content-type\");\n const contentLength=x.res.headers.get(\"content-length\");\n const finalUrl=x.res.url;\n const bytes=new Uint8Array(await x.res.arrayBuffer());\n const digest=await sha256(bytes);\n const zipLike=bytes[0]===0x50&&bytes[1]===0x4b;\n const exact=bytes.length===TARGET.bytes&&digest===TARGET.sha256&&zipLike;\n if(exact) await blob.set(KEY,bytes);\n return {\n ok:exact,http:x.res.status,contentType,contentLength,finalUrl,\n resolved,candidate_count:candidates.length,candidates,\n bytes:bytes.length,sha256:digest,zipLike,exact,\n key:exact?KEY:null,elapsed_ms:Date.now()-t0\n };\n}\n\nconst result = await recover();\nconsole.log(JSON.stringify(result));\nexport default result;\n",[224],"5be5693c-d311-4f84-ad55-460addf6cf17","probe_download.ts","cf52937c-b22d-11f1-8ac9-1607ee4eb77e",3,["D",1789604524662],"const URL=\"https://www.q-net.or.kr/cst006.do?artlSeq=5011149&brdId=Q006&code=1204&gId=&gSite=Q&id=cst00602\";\nconst r=await fetch(URL,{headers:{\"user-agent\":\"Mozilla/5.0\",\"accept-language\":\"ko-KR,ko;q=0.9\"}});\nconst html=await r.text();\nconst i=html.indexOf(\"function fileDown\");\nconst snippets=[];\nfor(const needle of [\"function fileDown\",\"cst00602s01\",\"fileCode\",\"atchFileSeq\",\"filePath\"]){const j=html.indexOf(needle); if(j>=0) snippets.push({needle,text:html.slice(Math.max(0,j-500),j+2500)});}\nconsole.log(JSON.stringify({http:r.status,length:html.length,i,snippets}));\nexport default {http:r.status,length:html.length,i,snippets};",[230],"b2b6245e-543f-41c8-986b-25e0b7bb4a57","probe_adjacent.ts","0f11ee68-b22e-11f1-8b7b-1607ee4eb77e",6,["D",1789604631586],"const UA=\"Mozilla/5.0\";\nconst out:any[]=[];\nfor(const artl of [5011149,5011150,5011151,5011152]){\n const url=`https://www.q-net.or.kr/cst006.do?artlSeq=${artl}&brdId=Q006&code=1204&gId=&gSite=Q&id=cst00602`;\n const r=await fetch(url,{headers:{\"user-agent\":UA,\"accept-language\":\"ko-KR,ko;q=0.9\"}});\n const h=await r.text();\n const calls=[...h.matchAll(/fileDown\\('([^']+)'\\s*,\\s*'([^']+)'\\s*,\\s*'(\\d+)'\\s*,\\s*'(\\d+)'\\)/g)].map(m=>({filePath:m[1],fileName:m[2],fileSeq:m[3],artlSeq:m[4]}));\n const needles=[\"2008년도\",\"변리사\",\"시험문제\",\"제목\",\"artlTitle\",\"등록일\"];\n const snippets:any[]=[]; for(const n of needles){const i=h.indexOf(n); if(i>=0) snippets.push({n,text:h.slice(Math.max(0,i-300),i+900).replace(/\\s+/g,\" \")});}\n out.push({artl,http:r.status,finalUrl:r.url,calls,snippets});\n}\nconsole.log(JSON.stringify(out)); export default out;",[237],"31af3889-873c-42fb-8e9c-e50967cee55d","probe_2008.ts","c3ccb8b6-b22d-11f1-afd2-1607ee4eb77e",2,["D",1789604505335],"const URL=\"https://www.q-net.or.kr/cst006.do?artlSeq=5011149&brdId=Q006&code=1204&gId=&gSite=Q&id=cst00602\";\nconst r=await fetch(URL,{headers:{\"user-agent\":\"Mozilla/5.0\",\"accept-language\":\"ko-KR,ko;q=0.9\"}});\nconst html=await r.text();\nconst fileDown=[...html.matchAll(/fileDown\\(([^\\n;]+)\\)/g)].map(m=>m[0]);\nconst args=[...html.matchAll(/fileDown\\('([^']*)'\\s*,\\s*'([^']*)'\\s*,\\s*'([^']*)'/g)].map(m=>({filePath:m[1],fileName:m[2],fileSeq:m[3]}));\nconst hrefs=[...html.matchAll(/href=[\"']([^\"']*(?:126247|1205128543619|fileDown|cst006)[^\"']*)[\"']/g)].map(m=>m[1]).slice(0,50);\nconsole.log(JSON.stringify({http:r.status,finalUrl:r.url,length:html.length,args,fileDown:fileDown.slice(0,20),hrefs}));\nexport default {http:r.status,length:html.length,args,fileDown:fileDown.slice(0,20),hrefs};",[244],"02095400-3501-48aa-b620-781aadbc1971","preview_pack_13_19.ts","01a0acbd-7f43-7437-9e33-1d282de46b92",["D",1789604495107],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\nimport { Jimp } from \"npm:jimp\";\nconst PAGES=[13,14,15,16,17,18,19];\nconst KEY=\"pb/2022-r59-natural-science-a/preview-pack-p13-p19.json\";\nfunction b64(bytes:Uint8Array){let s=\"\";const step=0x8000;for(let i=0;i<bytes.length;i+=step)s+=String.fromCharCode(...bytes.subarray(i,Math.min(i+step,bytes.length)));return btoa(s);}\nfunction hex(buf:ArrayBuffer){return [...new Uint8Array(buf)].map(x=>x.toString(16).padStart(2,\"0\")).join(\"\");}\nasync function sha(bytes:Uint8Array){const c=new Uint8Array(bytes.length);c.set(bytes);return hex(await crypto.subtle.digest(\"SHA-256\",c));}\nasync function build(){\n const rows:any[]=[];\n for(const p of PAGES){\n const k=`pb/2022-r59-natural-science-a/page-${String(p).padStart(2,\"0\")}.jpg`;\n const res=await blob.get(k); const ab=await res.arrayBuffer(); const input=new Uint8Array(ab);\n const img=await Jimp.fromBuffer(ab); img.resize({w:520});\n const out=new Uint8Array(await img.getBuffer(\"image/jpeg\",{quality:52}));\n rows.push({page:p,input_bytes:input.length,input_sha256:await sha(input),preview_bytes:out.length,preview_sha256:await sha(out),jpeg_base64:b64(out)});\n }\n const text=JSON.stringify({source_pdf_sha256:\"baa62634f43206b384ae52f12914b40447d150d41eae4774cfa8c176e9790537\",pages:rows});\n await blob.set(KEY,text);\n return {ok:true,key:KEY,length:text.length,sha256:await sha(new TextEncoder().encode(text)),pages:rows.map(x=>({page:x.page,input_bytes:x.input_bytes,input_sha256:x.input_sha256,preview_bytes:x.preview_bytes,preview_sha256:x.preview_sha256,b64_length:x.jpeg_base64.length}))};\n}\nexport default async function(req:Request){\n const u=new URL(req.url);\n if(u.searchParams.get(\"build\")===\"1\") return Response.json(await build());\n const res=await blob.get(KEY); const text=await res.text();\n const part=Math.max(0,Number(u.searchParams.get(\"part\")||\"0\")); const chunk=Math.min(16000,Math.max(1000,Number(u.searchParams.get(\"chunk\")||\"15000\")));\n const start=part*chunk; return Response.json({ok:true,part,chunk,total_len:text.length,start,end:Math.min(start+chunk,text.length),data:text.slice(start,start+chunk)});\n}",[251],"3c116b5b-5179-4ad8-8870-6a0a958e8b14","preview_pack_13_15.ts","01a0acbd-7f43-7437-9e33-1929ccf18976",["D",1789604495107],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\nimport { Jimp } from \"npm:jimp\";\nconst PAGES=[13,14,15];\nconst KEY=\"pb/2022-r59-natural-science-a/preview-pack-p13-p15.json\";\nfunction b64(bytes:Uint8Array){let s=\"\";const step=0x8000;for(let i=0;i<bytes.length;i+=step)s+=String.fromCharCode(...bytes.subarray(i,Math.min(i+step,bytes.length)));return btoa(s);}\nfunction hex(buf:ArrayBuffer){return [...new Uint8Array(buf)].map(x=>x.toString(16).padStart(2,\"0\")).join(\"\");}\nasync function sha(bytes:Uint8Array){const c=new Uint8Array(bytes.length);c.set(bytes);return hex(await crypto.subtle.digest(\"SHA-256\",c));}\nasync function build(){\n const rows:any[]=[];\n for(const p of PAGES){\n const k=`pb/2022-r59-natural-science-a/page-${String(p).padStart(2,\"0\")}.jpg`;\n const res=await blob.get(k); const ab=await res.arrayBuffer(); const input=new Uint8Array(ab);\n const img=await Jimp.fromBuffer(ab); img.resize({w:620});\n const out=new Uint8Array(await img.getBuffer(\"image/jpeg\",{quality:58}));\n rows.push({page:p,input_bytes:input.length,input_sha256:await sha(input),preview_bytes:out.length,preview_sha256:await sha(out),jpeg_base64:b64(out)});\n }\n const text=JSON.stringify({source_pdf_sha256:\"baa62634f43206b384ae52f12914b40447d150d41eae4774cfa8c176e9790537\",pages:rows});\n await blob.set(KEY,text);\n return {ok:true,key:KEY,length:text.length,sha256:await sha(new TextEncoder().encode(text)),pages:rows.map(x=>({page:x.page,input_bytes:x.input_bytes,input_sha256:x.input_sha256,preview_bytes:x.preview_bytes,preview_sha256:x.preview_sha256,b64_length:x.jpeg_base64.length}))};\n}\nexport default async function(req:Request){\n const u=new URL(req.url);\n if(u.searchParams.get(\"build\")===\"1\") return Response.json(await build());\n const res=await blob.get(KEY); const text=await res.text();\n const part=Math.max(0,Number(u.searchParams.get(\"part\")||\"0\")); const chunk=Math.min(16000,Math.max(1000,Number(u.searchParams.get(\"chunk\")||\"15000\")));\n const start=part*chunk; return Response.json({ok:true,part,chunk,total_len:text.length,start,end:Math.min(start+chunk,text.length),data:text.slice(start,start+chunk)});\n}",[257],"685cdc33-1982-48d8-ae12-ef397ea6963e","preview_pack_07_12.ts","01a0acbd-7f43-7437-9e33-14947439911e",["D",1789604495107],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\nimport { Jimp } from \"npm:jimp\";\nconst PAGES=[7,8,9,10,11,12];\nconst KEY=\"pb/2022-r59-natural-science-a/preview-pack-p07-p12.json\";\nfunction b64(bytes:Uint8Array){let s=\"\";const step=0x8000;for(let i=0;i<bytes.length;i+=step)s+=String.fromCharCode(...bytes.subarray(i,Math.min(i+step,bytes.length)));return btoa(s);}\nfunction hex(buf:ArrayBuffer){return [...new Uint8Array(buf)].map(x=>x.toString(16).padStart(2,\"0\")).join(\"\");}\nasync function sha(bytes:Uint8Array){const c=new Uint8Array(bytes.length);c.set(bytes);return hex(await crypto.subtle.digest(\"SHA-256\",c));}\nasync function build(){\n const rows:any[]=[];\n for(const p of PAGES){\n const k=`pb/2022-r59-natural-science-a/page-${String(p).padStart(2,\"0\")}.jpg`;\n const res=await blob.get(k); const ab=await res.arrayBuffer(); const input=new Uint8Array(ab);\n const img=await Jimp.fromBuffer(ab); img.resize({w:520});\n const out=new Uint8Array(await img.getBuffer(\"image/jpeg\",{quality:52}));\n rows.push({page:p,input_bytes:input.length,input_sha256:await sha(input),preview_bytes:out.length,preview_sha256:await sha(out),jpeg_base64:b64(out)});\n }\n const text=JSON.stringify({source_pdf_sha256:\"baa62634f43206b384ae52f12914b40447d150d41eae4774cfa8c176e9790537\",pages:rows});\n await blob.set(KEY,text);\n return {ok:true,key:KEY,length:text.length,sha256:await sha(new TextEncoder().encode(text)),pages:rows.map(x=>({page:x.page,input_bytes:x.input_bytes,input_sha256:x.input_sha256,preview_bytes:x.preview_bytes,preview_sha256:x.preview_sha256,b64_length:x.jpeg_base64.length}))};\n}\nexport default async function(req:Request){\n const u=new URL(req.url);\n if(u.searchParams.get(\"build\")===\"1\") return Response.json(await build());\n const res=await blob.get(KEY); const text=await res.text();\n const part=Math.max(0,Number(u.searchParams.get(\"part\")||\"0\")); const chunk=Math.min(16000,Math.max(1000,Number(u.searchParams.get(\"chunk\")||\"15000\")));\n const start=part*chunk; return Response.json({ok:true,part,chunk,total_len:text.length,start,end:Math.min(start+chunk,text.length),data:text.slice(start,start+chunk)});\n}",[263],"34f2a2f0-4f1f-4554-b67c-98c27c788da1","preview.ts","01a0acbd-7f43-7437-9e33-12a1dc56adc9",["D",1789604495107],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\nimport { Jimp } from \"npm:jimp\";\n\nfunction b64(bytes: Uint8Array): string {\n let s=\"\"; const step=0x8000;\n for(let i=0;i<bytes.length;i+=step) s+=String.fromCharCode(...bytes.subarray(i,Math.min(i+step,bytes.length)));\n return btoa(s);\n}\nfunction hex(buf:ArrayBuffer):string { return [...new Uint8Array(buf)].map(x=>x.toString(16).padStart(2,\"0\")).join(\"\"); }\nasync function sha256(bytes:Uint8Array):Promise<string>{\n const copy=new Uint8Array(bytes.byteLength); copy.set(bytes);\n return hex(await crypto.subtle.digest(\"SHA-256\",copy));\n}\nexport default async function(req:Request):Promise<Response>{\n const u=new URL(req.url);\n const p=Number(u.searchParams.get(\"page\")||\"0\");\n if(!Number.isInteger(p)||p<1||p>20) return Response.json({ok:false,error:\"page 1..20 only\"},{status:400});\n const key=`pb/2022-r59-natural-science-a/page-${String(p).padStart(2,\"0\")}.jpg`;\n const res=await blob.get(key);\n const inputBuffer=await res.arrayBuffer();\n const input=new Uint8Array(inputBuffer);\n const sourceSha=await sha256(input);\n const img=await Jimp.fromBuffer(inputBuffer);\n img.resize({w:680});\n const out=await img.getBuffer(\"image/jpeg\",{quality:64});\n const bytes=new Uint8Array(out);\n const encoded=b64(bytes);\n const digest=await sha256(bytes);\n if(u.searchParams.get(\"meta\")===\"1\") return Response.json({ok:true,page:p,input_bytes:input.length,input_sha256:sourceSha,width:img.width,height:img.height,preview_bytes:bytes.length,preview_sha256:digest,b64_length:encoded.length});\n const chunkSize=Math.min(16000,Math.max(1000,Number(u.searchParams.get(\"chunk\")||\"15000\")));\n const part=Math.max(0,Number(u.searchParams.get(\"part\")||\"0\"));\n const start=part*chunkSize;\n return Response.json({ok:true,page:p,part,chunk_size:chunkSize,total_len:encoded.length,start,end:Math.min(start+chunkSize,encoded.length),data:encoded.slice(start,start+chunkSize)});\n}",[269],"b9fc0a31-939f-4fff-9164-f66bea2bb68f","page_png.ts","01a0acbd-7f43-7437-9e33-0d01d5968363",["D",1789604495107],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\nexport default async function(req:Request){\n const u=new URL(req.url);\n const p=Math.max(1,Math.min(15,Number(u.searchParams.get(\"page\")||\"1\")));\n const key=`pb/2020-r57-natural-science-a/render/page-${String(p).padStart(2,\"0\")}.png`;\n const res=await blob.get(key);\n const bytes=new Uint8Array(await res.arrayBuffer());\n return new Response(bytes,{headers:{\"content-type\":\"image/png\",\"content-length\":String(bytes.length),\"cache-control\":\"public,max-age=3600\",\"x-pb-page\":String(p)}});\n}",[275],"dcb2eb41-c333-404a-8e7d-ae554de8daf3","page.ts","01a0acbd-7f43-7437-9e33-099c909329d2",["D",1789604495107],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\n\nconst KEY = \"pb/2022-r59-natural-science-a/exact.pdf\";\nconst EXACT_SHA = \"baa62634f43206b384ae52f12914b40447d150d41eae4774cfa8c176e9790537\";\n\nfunction b64(bytes: Uint8Array): string {\n let s = \"\";\n const step = 0x8000;\n for (let i = 0; i < bytes.length; i += step) {\n s += String.fromCharCode(...bytes.subarray(i, Math.min(i + step, bytes.length)));\n }\n return btoa(s);\n}\nfunction hex(buf: ArrayBuffer): string {\n return [...new Uint8Array(buf)].map((x) => x.toString(16).padStart(2, \"0\")).join(\"\");\n}\nasync function sha256(bytes: Uint8Array): Promise<string> {\n const copy = new Uint8Array(bytes.byteLength);\n copy.set(bytes);\n return hex(await crypto.subtle.digest(\"SHA-256\", copy));\n}\nfunction latin1(bytes: Uint8Array): string {\n return new TextDecoder(\"latin1\").decode(bytes);\n}\nfunction imageRefs(pdfText: string): number[] {\n const out: number[] = [];\n const re = /\\/Im0\\s+(\\d+)\\s+0\\s+R/g;\n for (const m of pdfText.matchAll(re)) {\n const n = Number(m[1]);\n if (!out.includes(n)) out.push(n);\n }\n return out.slice(0, 20);\n}\nfunction findObjectOffset(text: string, obj: number): number {\n const re = new RegExp(`(?:^|\\\\r\\\\n|\\\\r|\\\\n)${obj} 0 obj(?:\\\\r\\\\n|\\\\r|\\\\n|\\\\s*<<)`, \"g\");\n let m: RegExpExecArray | null;\n let found = -1;\n while ((m = re.exec(text)) !== null) {\n const local = m[0].indexOf(`${obj} 0 obj`);\n found = m.index + local;\n }\n return found;\n}\nfunction extractObjectStream(pdf: Uint8Array, text: string, obj: number): Uint8Array {\n const at = findObjectOffset(text, obj);\n if (at < 0) throw new Error(`object ${obj} not found`);\n const streamWord = text.indexOf(\"stream\", at);\n if (streamWord < 0 || streamWord - at > 1200) throw new Error(`stream for object ${obj} not found`);\n const dict = text.slice(at, streamWord);\n if (!/\\/Subtype\\s*\\/Image/.test(dict) || !/\\/DCTDecode/.test(dict)) throw new Error(`object ${obj} is not DCT image`);\n const lm = dict.match(/\\/Length\\s+(\\d+)/);\n if (!lm) throw new Error(`direct length missing for image object ${obj}`);\n const len = Number(lm[1]);\n let start = streamWord + 6;\n if (text.slice(start, start + 2) === \"\\r\\n\") start += 2;\n else if (text[start] === \"\\n\" || text[start] === \"\\r\") start += 1;\n const bytes = pdf.slice(start, start + len);\n if (bytes.length !== len || bytes[0] !== 0xff || bytes[1] !== 0xd8) throw new Error(`JPEG signature/length failure obj ${obj}`);\n return bytes;\n}\n\nexport default async function(req: Request): Promise<Response> {\n const u = new URL(req.url);\n const p = Number(u.searchParams.get(\"page\") || \"0\");\n if (!Number.isInteger(p) || p < 1 || p > 20) return Response.json({ok:false,error:\"page must be 1..20\"},{status:400});\n const res = await blob.get(KEY);\n const pdf = new Uint8Array(await res.arrayBuffer());\n const refs = imageRefs(latin1(pdf));\n if (refs.length !== 20) return Response.json({ok:false,error:`expected 20 Im0 refs, got ${refs.length}`,refs},{status:500});\n const obj = refs[p-1];\n if (u.searchParams.get(\"inspect\") === \"1\") {\n const txt = latin1(pdf);\n const at = txt.indexOf(`${obj} 0 obj`);\n const sw = at >= 0 ? txt.indexOf(\"stream\", at) : -1;\n return Response.json({ok:true,page:p,image_object:obj,object_head:at>=0?txt.slice(at, sw>at?Math.min(sw,at+1600):at+1600):null});\n }\n const jpg = extractObjectStream(pdf, latin1(pdf), obj);\n const digest = await sha256(jpg);\n if (u.searchParams.get(\"raw\") === \"1\") {\n return new Response(jpg,{headers:{\"content-type\":\"image/jpeg\",\"x-pb-page\":String(p),\"x-pb-image-object\":String(obj),\"x-pb-image-sha256\":digest,\"x-pb-source-sha256\":EXACT_SHA}});\n }\n if (u.searchParams.get(\"persist\") === \"1\") {\n const outKey = `pb/2022-r59-natural-science-a/page-${String(p).padStart(2,\"0\")}.jpg`;\n await blob.set(outKey, jpg);\n return Response.json({ok:true,page:p,key:outKey,image_object:obj,bytes:jpg.length,sha256:digest,source_sha256:EXACT_SHA});\n }\n const encoded = b64(jpg);\n if (u.searchParams.get(\"meta\") === \"1\") {\n return Response.json({ok:true,page:p,image_object:obj,bytes:jpg.length,sha256:digest,source_sha256:EXACT_SHA,b64_length:encoded.length});\n }\n if (u.searchParams.has(\"part\")) {\n const part = Math.max(0, Number(u.searchParams.get(\"part\") || \"0\"));\n const chunkSize = Math.min(16000, Math.max(1000, Number(u.searchParams.get(\"chunk\") || \"15000\")));\n const start = part * chunkSize;\n return Response.json({ok:true,page:p,part,chunk_size:chunkSize,total_len:encoded.length,start,end:Math.min(start+chunkSize,encoded.length),data:encoded.slice(start,start+chunkSize)});\n }\n return Response.json({ok:true,page:p,image_object:obj,bytes:jpg.length,sha256:digest,source_sha256:EXACT_SHA,jpeg_base64:encoded});\n}",[281],"84ea0a63-11c4-4d75-8459-d787f3bc65cb","outer_cd.ts","52f76d42-b22e-11f1-bcad-1607ee4eb77e",8,["D",1789604745524],"const ID=\"1mYCJAhtlVRL0kmjjuyUxwXYww3tFfvZP\";\nconst BASE=`https://drive.usercontent.google.com/download?id=${ID}&export=download&confirm=t`;\nconst TOTAL=152349587;\nfunction u16(b:Uint8Array,o:number){return b[o]|(b[o+1]<<8)}\nfunction u32(b:Uint8Array,o:number){return (b[o]|(b[o+1]<<8)|(b[o+2]<<16)|(b[o+3]<<24))>>>0}\nasync function rf(s:number,e:number){const r=await fetch(BASE,{headers:{Range:`bytes=${s}-${e}`,\"user-agent\":\"Mozilla/5.0\"}});if(r.status!==206)throw new Error(\"range \"+r.status);return new Uint8Array(await r.arrayBuffer())}\nfunction dec(x:Uint8Array,utf8:boolean){try{return new TextDecoder(utf8?\"utf-8\":\"euc-kr\").decode(x)}catch{return new TextDecoder().decode(x)}}\nconst tailStart=TOTAL-100000;\nconst tail=await rf(tailStart,TOTAL-1);\nlet eocd=-1; for(let i=tail.length-22;i>=0;i--){if(u32(tail,i)===0x06054b50){eocd=i;break}}\nif(eocd<0)throw new Error(\"EOCD not found\");\nconst entries=u16(tail,eocd+10), cdSize=u32(tail,eocd+12), cdOffset=u32(tail,eocd+16);\nconst cd=await rf(cdOffset,cdOffset+cdSize-1);\nconst arr:any[]=[];let p=0;\nfor(let n=0;n<entries;n++){if(u32(cd,p)!==0x02014b50)throw new Error(\"bad cd \"+n+\" \"+p);const flags=u16(cd,p+8),method=u16(cd,p+10),compressed=u32(cd,p+20),uncompressed=u32(cd,p+24),nl=u16(cd,p+28),xl=u16(cd,p+30),cl=u16(cd,p+32),localOffset=u32(cd,p+42);const name=dec(cd.slice(p+46,p+46+nl),!!(flags&0x800));if(/2008|QNET_RAW|PB_QNET/i.test(name))arr.push({n,name,flags,method,compressed,uncompressed,localOffset});p+=46+nl+xl+cl;}\nconsole.log(JSON.stringify({TOTAL,entries,cdSize,cdOffset,matches:arr}));export default {TOTAL,entries,cdSize,cdOffset,matches:arr};",[287],"061a8e53-d7fe-496d-bdcb-785625fb577a","ocr_p13.ts","01a0acbd-7f43-7437-9e33-04abbbf0e2f2",["D",1789604495107],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\nimport { createWorker } from \"npm:tesseract.js\";\nexport default async function(){\n const res=await blob.get(\"pb/2022-r59-natural-science-a/page-13.jpg\");\n const ab=await res.arrayBuffer();\n const worker=await createWorker(\"kor+eng\");\n const {data}=await worker.recognize(new Uint8Array(ab));\n await worker.terminate();\n return {page:13,text:data.text};\n}",[294],"143efeaf-3316-4ebe-90e0-b53b201e7a8f","ocr.ts","01a0acbd-7f43-7437-9e33-007106ba342b",["D",1789604495107],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\nimport { createWorker } from \"npm:tesseract.js\";\nexport default async function(req:Request){\n const u=new URL(req.url); const p=Number(u.searchParams.get(\"page\")||\"13\");\n const res=await blob.get(`pb/2022-r59-natural-science-a/page-${String(p).padStart(2,\"0\")}.jpg`);\n const ab=await res.arrayBuffer();\n const worker=await createWorker(\"kor+eng\");\n const {data}=await worker.recognize(new Uint8Array(ab));\n await worker.terminate();\n return Response.json({page:p,text:data.text});\n}",[300],"336142c9-68d1-4b97-ab57-9538697127a6","mirror_hash.ts","01a0acbd-7f43-7437-9e32-fd2718c21c76",["D",1789604495107],"const TARGET={bytes:5581665,sha256:\"96a5df8ffd5811f3f4a0477614ccdfb516aa22b8cc03e8c4647500a3a4d86b87\"};\nconst urls=[\n {label:\"megaexpert\",url:\"https://file.megaexpert.co.kr/script/fileDown.asp?name=board%2Fon%2F7245_2023072320_01.pdf\"},\n {label:\"allaboutwealth\",url:\"https://blog.kakaocdn.net/dna/cV6oIM/btrNvhA5O82/AAAAAAAAAAAAAAAAAAAAAFecHnlM8ymbyvGpxTMmu_pQWiFDw3Jx-VHPSvlfDzbv/2020%EB%85%84%20%EC%A0%9C57%ED%9A%8C%20%EB%B3%80%EB%A6%AC%EC%82%AC%201%EC%B0%A8%20%EC%9E%90%EC%97%B0%EA%B3%BC%ED%95%99%EA%B0%9C%EB%A1%A0%20A%ED%98%95.pdf?allow_ip=&allow_referer=&attach=1&credential=yqXZFxpELC7KVnFOS48ylbz2pIh7yKj8&expires=1785509999&knm=tfile.pdf&signature=ORz5BbhfasmpxBERorvLyhc7Ox0%3D\"},\n {label:\"wirebox\",url:\"https://blog.kakaocdn.net/dna/c3sUUT/btsKLxswCcL/AAAAAAAAAAAAAAAAAAAAAH5Bw5QDGK6NchcctZQk6vXSSwu7pTmKl2Kca6O7aqR7/2020%EB%85%84%EB%8F%84%20%EC%A0%9C57%ED%9A%8C%20%EB%B3%80%EB%A6%AC%EC%82%AC%20%EA%B5%AD%EA%B0%80%EC%9E%90%EA%B2%A9%EC%8B%9C%ED%97%98%20%EC%A0%9C1%EC%B0%A8%EC%8B%9C%ED%97%98%20%EC%9E%90%EC%97%B0%EA%B3%BC%ED%95%99%EA%B0%9C%EB%A1%A0%20A%ED%98%95.pdf?allow_ip=&allow_referer=&attach=1&credential=yqXZFxpELC7KVnFOS48ylbz2pIh7yKj8&expires=1772290799&knm=tfile.pdf&signature=EebRRLfa9TGgZhZXACD8eU%2BbTpM%3D\"}\n];\nfunction hex(buf:ArrayBuffer){return [...new Uint8Array(buf)].map(b=>b.toString(16).padStart(2,\"0\")).join(\"\");}\nasync function sha(b:Uint8Array){return hex(await crypto.subtle.digest(\"SHA-256\",b));}\nconst out:any[]=[];\nfor(const x of urls){\n try{\n const r=await fetch(x.url,{redirect:\"follow\",headers:{\"user-agent\":\"Mozilla/5.0\",\"referer\":x.label===\"megaexpert\"?\"https://www.megaexpert.co.kr/\":\"https://tistory.com/\"}});\n const b=new Uint8Array(await r.arrayBuffer());\n const digest=await sha(b);\n out.push({label:x.label,http:r.status,final_url:r.url,content_type:r.headers.get(\"content-type\"),bytes:b.length,sha256:digest,exact:b.length===TARGET.bytes&&digest===TARGET.sha256});\n }catch(e){out.push({label:x.label,error:String(e)});}\n}\nconsole.log(JSON.stringify({target:TARGET,results:out}));\nexport default {target:TARGET,results:out};",[306],"d85b2926-ebe7-4326-be66-8aa428dc2161","main.ts",["D",1789604495107],"// @ts-ignore Val Town supports HTTPS imports.\nimport { blob } from \"https://esm.town/v/std/blob/main.ts\";\n\nconst TARGET = {\n bytes: 68_482_517,\n sha256: \"e2ada3e94f70fd257428cc3bd08a7aa44af7ddb1a0a94860af3aee23b52d87e9\",\n filename: \"(등재) 제57회 변리사 1차 문제지 원본(PDF).zip\",\n artlSeq: \"5207047\",\n fileSeq: \"2194931\",\n filePath: \"bbs/Q004/Q004_2194931\",\n};\nconst KEY = \"pb/2020-r57-first-stage-parent/exact.zip\";\nconst PROV_KEY = \"pb/2020-r57-first-stage-parent/provenance.json\";\nconst QBASE = \"https://www.q-net.or.kr\";\nconst UA = \"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36\";\n\nfunction hex(buf: ArrayBuffer): string {\n return [...new Uint8Array(buf)].map((b) => b.toString(16).padStart(2, \"0\")).join(\"\");\n}\nasync function sha256(bytes: Uint8Array): Promise<string> {\n return hex(await crypto.subtle.digest(\"SHA-256\", bytes));\n}\nfunction zipLike(bytes: Uint8Array): boolean {\n return bytes.byteLength > 1000 && bytes[0] === 0x50 && bytes[1] === 0x4b &&\n ((bytes[2] === 0x03 && bytes[3] === 0x04) || (bytes[2] === 0x05 && bytes[3] === 0x06));\n}\nfunction cookieLine(headers: Headers): string {\n const h = headers as Headers & { getSetCookie?: () => string[] };\n const all = h.getSetCookie?.() ?? (headers.get(\"set-cookie\") ? [headers.get(\"set-cookie\")!] : []);\n return all.map((s) => s.split(\";\", 1)[0]).filter(Boolean).join(\"; \");\n}\nfunction mergeCookies(a: string, b: string): string {\n const m = new Map<string, string>();\n for (const c of [a, b]) for (const part of c.split(/;\\s*/)) {\n const i = part.indexOf(\"=\"); if (i > 0) m.set(part.slice(0, i), part.slice(i + 1));\n }\n return [...m].map(([k, v]) => `${k}=${v}`).join(\"; \");\n}\nasync function qFetch(url: string, init: RequestInit = {}, cookie = \"\") {\n const headers = new Headers(init.headers);\n headers.set(\"user-agent\", UA);\n headers.set(\"accept-language\", \"ko-KR,ko;q=0.9\");\n if (cookie) headers.set(\"cookie\", cookie);\n const res = await fetch(url, { ...init, headers, redirect: \"follow\" });\n return { res, cookie: mergeCookies(cookie, cookieLine(res.headers)) };\n}\nasync function verify(label: string, url: string, bytes: Uint8Array) {\n const digest = await sha256(bytes);\n return {\n label, url, bytes: bytes.byteLength, sha256: digest, zip_like: zipLike(bytes),\n exact_size: bytes.byteLength === TARGET.bytes,\n exact_sha256: digest === TARGET.sha256,\n exact: bytes.byteLength === TARGET.bytes && digest === TARGET.sha256 && zipLike(bytes),\n };\n}\nfunction u16(b: Uint8Array, o: number) { return b[o] | (b[o + 1] << 8); }\nfunction u32(b: Uint8Array, o: number) {\n return (b[o] | (b[o + 1] << 8) | (b[o + 2] << 16) | (b[o + 3] << 24)) >>> 0;\n}\nfunction decodeName(bytes: Uint8Array, utf8: boolean): string {\n try { return new TextDecoder(utf8 ? \"utf-8\" : \"euc-kr\").decode(bytes); }\n catch { return new TextDecoder(\"utf-8\").decode(bytes); }\n}\nfunction listZipMembers(b: Uint8Array) {\n const min = Math.max(0, b.length - 65_557);\n let eocd = -1;\n for (let i = b.length - 22; i >= min; i--) {\n if (b[i] === 0x50 && b[i+1] === 0x4b && b[i+2] === 0x05 && b[i+3] === 0x06) { eocd = i; break; }\n }\n if (eocd < 0) throw new Error(\"EOCD not found\");\n const entries = u16(b, eocd + 10);\n const cdSize = u32(b, eocd + 12);\n const cdOffset = u32(b, eocd + 16);\n const out: any[] = [];\n let p = cdOffset;\n for (let n = 0; n < entries; n++) {\n if (!(b[p]===0x50 && b[p+1]===0x4b && b[p+2]===0x01 && b[p+3]===0x02)) {\n throw new Error(`central directory signature missing at entry ${n} offset ${p}`);\n }\n const flags = u16(b,p+8);\n const method = u16(b,p+10);\n const crc32 = u32(b,p+16).toString(16).padStart(8,\"0\");\n const compressed = u32(b,p+20);\n const uncompressed = u32(b,p+24);\n const nameLen = u16(b,p+28), extraLen=u16(b,p+30), commentLen=u16(b,p+32);\n const localOffset = u32(b,p+42);\n const nameBytes=b.slice(p+46,p+46+nameLen);\n const name=decodeName(nameBytes, Boolean(flags & 0x800));\n out.push({index:n+1,name,method,compressed,uncompressed,crc32,local_offset:localOffset});\n p += 46 + nameLen + extraLen + commentLen;\n }\n return {entries, cd_size:cdSize, cd_offset:cdOffset, members:out};\n}\nasync function fetchQNet() {\n let cookie = \"\";\n let x = await qFetch(`${QBASE}/man001.do?gSite=L&gId=51`, {}, cookie); cookie = x.cookie;\n const detailUrl = `${QBASE}/cst003.do?id=cst00302&gSite=L&gId=51`;\n const form = new URLSearchParams({\n page:\"1\", schType:\"\", schText:\"\", artlSeq:TARGET.artlSeq,\n boardId:\"Q004\", code:\"1008\", menuType:\"cst00309\", cst:\"\",\n });\n x = await qFetch(detailUrl, {\n method:\"POST\", body:form,\n headers:{\"content-type\":\"application/x-www-form-urlencoded\", referer:detailUrl},\n }, cookie); cookie=x.cookie;\n if (!x.res.ok) throw new Error(`Q-Net detail HTTP ${x.res.status}`);\n const detail=await x.res.text();\n const candidates:any[]=[];\n const re=/fileDown\\('([^']+)'\\s*,\\s*'([^']+)'\\s*,\\s*'(\\d+)'\\)/g;\n for (const m of detail.matchAll(re)) candidates.push({filePath:m[1],fileName:m[2],fileSeq:m[3]});\n let resolved=candidates.find((z)=>z.fileSeq===TARGET.fileSeq) ??\n candidates.find((z)=>z.fileName.includes(\"57회\") && z.fileName.toLowerCase().includes(\"zip\")) ??\n {filePath:TARGET.filePath,fileName:TARGET.filename,fileSeq:TARGET.fileSeq};\n const q = new URLSearchParams({\n id:\"cst00302s01\", gSite:\"L\", gId:\"51\", fileCode:\"R001\",\n filePath:resolved.filePath, fileName:resolved.fileName, fileSeq:resolved.fileSeq,\n artlSeq:TARGET.artlSeq, href:\"0\",\n });\n const dl=`${QBASE}/cst003.do?${q.toString()}`;\n x=await qFetch(dl,{headers:{referer:detailUrl,accept:\"application/zip,application/octet-stream,*/*;q=0.8\"}},cookie);\n if(!x.res.ok) throw new Error(`Q-Net attachment HTTP ${x.res.status}`);\n const bytes=new Uint8Array(await x.res.arrayBuffer());\n return {bytes,audit:await verify(\"qnet_official_session\",x.res.url||dl,bytes),resolved,candidates};\n}\nasync function acquire() {\n const attempts:any[]=[];\n try {\n const got=await fetchQNet();\n attempts.push(got.audit);\n if(!got.audit.exact) return {ok:false,attempts,resolved:got.resolved,candidates:got.candidates};\n await blob.set(KEY,got.bytes);\n const zip=listZipMembers(got.bytes);\n const provenance={\n accepted_at:new Date().toISOString(),target:TARGET,accepted_from:got.audit.label,\n audit:got.audit,resolved:got.resolved,candidates:got.candidates,\n zip_summary:{entries:zip.entries,cd_size:zip.cd_size,cd_offset:zip.cd_offset},\n members:zip.members,prior_attempts:attempts,\n };\n await blob.setJSON(PROV_KEY,provenance);\n return {ok:true,key:KEY,provenance};\n } catch(e) {\n attempts.push({label:\"fetchQNet\",error:String(e)});\n return {ok:false,attempts};\n }\n}\nasync function verifyStoredBlob() {\n const res=await blob.get(KEY);\n const bytes=new Uint8Array(await res.arrayBuffer());\n return await verify(\"valtown_blob_readback\",`blob://${KEY}`,bytes);\n}\nasync function storedMembers() {\n const res=await blob.get(KEY);\n const bytes=new Uint8Array(await res.arrayBuffer());\n const audit=await verify(\"valtown_blob_readback\",`blob://${KEY}`,bytes);\n if(!audit.exact) return {ok:false,audit};\n return {ok:true,audit,...listZipMembers(bytes)};\n}\n\nexport default async function(req:Request):Promise<Response>{\n const url=new URL(req.url);\n if(url.searchParams.get(\"verify_stored\")===\"1\") return Response.json({ok:true,audit:await verifyStoredBlob()});\n if(url.searchParams.get(\"members\")===\"1\") return Response.json(await storedMembers());\n const result=await acquire();\n return Response.json(result,{status:result.ok?200:424});\n}\n",[312],"4c034c1a-f6d8-41d1-aba3-fa8c06bd8fe9","inspect_parent.ts","01a0acbd-7f43-7437-9e32-f47910831cea",["D",1789604495107],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\n\nconst KEY=\"pb/2020-r57-first-stage-parent/exact.zip\";\nconst EXPECTED_BYTES=68_482_517;\nconst EXPECTED_SHA=\"e2ada3e94f70fd257428cc3bd08a7aa44af7ddb1a0a94860af3aee23b52d87e9\";\n\nfunction hex(buf:ArrayBuffer){return [...new Uint8Array(buf)].map(b=>b.toString(16).padStart(2,\"0\")).join(\"\");}\nasync function sha256(b:Uint8Array){return hex(await crypto.subtle.digest(\"SHA-256\",b));}\nfunction u16(b:Uint8Array,o:number){return b[o]|(b[o+1]<<8);}\nfunction u32(b:Uint8Array,o:number){return (b[o]|(b[o+1]<<8)|(b[o+2]<<16)|(b[o+3]<<24))>>>0;}\nfunction decodeName(bytes:Uint8Array,utf8:boolean){\n try{return new TextDecoder(utf8?\"utf-8\":\"euc-kr\").decode(bytes);}\n catch{return new TextDecoder(\"utf-8\").decode(bytes);}\n}\nfunction listZipMembers(b:Uint8Array){\n const min=Math.max(0,b.length-65557); let eocd=-1;\n for(let i=b.length-22;i>=min;i--){if(b[i]===0x50&&b[i+1]===0x4b&&b[i+2]===0x05&&b[i+3]===0x06){eocd=i;break;}}\n if(eocd<0)throw new Error(\"EOCD not found\");\n const entries=u16(b,eocd+10),cdSize=u32(b,eocd+12),cdOffset=u32(b,eocd+16);\n const members:any[]=[]; let p=cdOffset;\n for(let n=0;n<entries;n++){\n if(!(b[p]===0x50&&b[p+1]===0x4b&&b[p+2]===0x01&&b[p+3]===0x02))throw new Error(\"bad central dir\");\n const flags=u16(b,p+8),method=u16(b,p+10),crc32=u32(b,p+16).toString(16).padStart(8,\"0\");\n const compressed=u32(b,p+20),uncompressed=u32(b,p+24);\n const nameLen=u16(b,p+28),extraLen=u16(b,p+30),commentLen=u16(b,p+32),localOffset=u32(b,p+42);\n const name=decodeName(b.slice(p+46,p+46+nameLen),Boolean(flags&0x800));\n members.push({index:n+1,name,flags,method,compressed,uncompressed,crc32,local_offset:localOffset});\n p+=46+nameLen+extraLen+commentLen;\n }\n return {entries,cd_size:cdSize,cd_offset:cdOffset,members};\n}\n\nconst t0=Date.now();\nconst res=await blob.get(KEY);\nconst bytes=new Uint8Array(await res.arrayBuffer());\nconst digest=await sha256(bytes);\nconst zip=listZipMembers(bytes);\nconst candidates=zip.members.filter((m:any)=>/자연과학|과학개론|natural/i.test(m.name));\nconst result={\n ok:bytes.length===EXPECTED_BYTES&&digest===EXPECTED_SHA,\n bytes:bytes.length,sha256:digest,expected_bytes:EXPECTED_BYTES,expected_sha256:EXPECTED_SHA,\n zip_entries:zip.entries,cd_size:zip.cd_size,cd_offset:zip.cd_offset,\n candidates,members:zip.members,elapsed_ms:Date.now()-t0\n};\nawait blob.setJSON(\"pb/2020-r57-first-stage-parent/parent_readback_members.json\",result);\nconsole.log(JSON.stringify(result));\nexport default result;",[317],"729797ff-759b-4b33-95aa-a6819b4568df","inspect_mupdf_text.ts","01a0acbd-7f43-7437-9e32-f2f2c33772ae",["D",1789604495107],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\nimport * as mupdf from \"npm:mupdf\";\nconst KEY=\"pb/2020-r57-natural-science-a/exact.pdf\";\nconst res=await blob.get(KEY);\nconst bytes=new Uint8Array(await res.arrayBuffer());\nconst doc=mupdf.Document.openDocument(bytes,\"application/pdf\");\nconst pages:any[]=[];\nlet total=0;\nfor(let i=0;i<doc.countPages();i++){\n const page=doc.loadPage(i);\n const st=page.toStructuredText(\"preserve-whitespace\");\n const text=st.asText();\n total+=text.length;\n pages.push({page:i+1,chars:text.length,text:text.slice(0,6000)});\n st.destroy(); page.destroy();\n}\ndoc.destroy();\nconst result={engine:\"mupdf structured text\",page_count:pages.length,total_chars:total,pages};\nawait blob.setJSON(\"pb/2020-r57-natural-science-a/mupdf_text_audit.json\",result);\nconsole.log(JSON.stringify(result));\nexport default result;",[323],"c360d055-3195-44b1-ad59-0c9dff95d826","inspect_child_text.ts","01a0acbd-7f43-7437-9e32-eff1ee9ba009",["D",1789604495107],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\nimport * as pdfjsLib from \"npm:pdfjs-dist/legacy/build/pdf.mjs\";\n\nconst KEY=\"pb/2020-r57-natural-science-a/exact.pdf\";\nconst res=await blob.get(KEY);\nconst bytes=new Uint8Array(await res.arrayBuffer());\nconst task=pdfjsLib.getDocument({data:bytes,disableWorker:true});\nconst pdf=await task.promise;\nconst pages:any[]=[];\nlet totalItems=0,totalChars=0;\nfor(let i=1;i<=pdf.numPages;i++){\n const page=await pdf.getPage(i);\n const tc=await page.getTextContent();\n const items=(tc.items||[]).map((x:any)=>x.str||\"\").filter((s:string)=>s.length>0);\n const text=items.join(\" \");\n totalItems+=items.length; totalChars+=text.length;\n pages.push({page:i,items:items.length,chars:text.length,sample:text.slice(0,500)});\n}\nconst result={num_pages:pdf.numPages,total_items:totalItems,total_chars:totalChars,pages};\nawait blob.setJSON(\"pb/2020-r57-natural-science-a/text_layer_audit.json\",result);\nconsole.log(JSON.stringify(result));\nexport default result;",[329],"7046b3bf-2998-46b9-8f20-3e0155202ad6","fetch_official_2008.ts","de3fbe82-b22d-11f1-a61b-1607ee4eb77e",4,["D",1789604549705],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\nconst PAGE=\"https://www.q-net.or.kr/cst006.do?artlSeq=5011149&brdId=Q006&code=1204&gId=&gSite=Q&id=cst00602\";\nconst UA=\"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 Chrome/126.0.0.0 Safari/537.36\";\nfunction hex(buf:ArrayBuffer){return [...new Uint8Array(buf)].map(b=>b.toString(16).padStart(2,\"0\")).join(\"\");}\nasync function sha(b:Uint8Array){return hex(await crypto.subtle.digest(\"SHA-256\",b));}\nfunction cookieLine(headers:Headers){const h=headers as Headers&{getSetCookie?:()=>string[]}; const all=h.getSetCookie?.()??(headers.get(\"set-cookie\")?[headers.get(\"set-cookie\")!]:[]); return all.map(s=>s.split(\";\",1)[0]).join(\"; \");}\nlet p=await fetch(PAGE,{headers:{\"user-agent\":UA,\"accept-language\":\"ko-KR,ko;q=0.9\"},redirect:\"follow\"});\nconst cookie=cookieLine(p.headers);\nconst html=await p.text();\nconst m=html.match(/fileDown\\('([^']+)'\\s*,\\s*'([^']+)'\\s*,\\s*'(\\d+)'\\s*,\\s*'(\\d+)'\\)/);\nif(!m) throw new Error(\"fileDown candidate not found\");\nconst resolved={filePath:m[1],fileName:m[2],fileSeq:m[3],artlSeq:m[4]};\nconst q=new URLSearchParams({id:\"cst00602s01\",gSite:\"Q\",gId:\"\",fileCode:\"R001\",filePath:resolved.filePath,fileName:resolved.fileName,fileSeq:resolved.fileSeq,artlSeq:resolved.artlSeq,href:\"0\"});\nconst dl=\"https://www.q-net.or.kr/cst006.do?\"+q.toString();\nconst r=await fetch(dl,{headers:{\"user-agent\":UA,\"accept-language\":\"ko-KR,ko;q=0.9\",\"referer\":PAGE,...(cookie?{\"cookie\":cookie}:{})},redirect:\"follow\"});\nconst b=new Uint8Array(await r.arrayBuffer());\nconst digest=await sha(b);\nconst head=[...b.slice(0,32)].map(x=>x.toString(16).padStart(2,\"0\")).join(\"\");\nconst ole=b.length>=8&&head.startsWith(\"d0cf11e0a1b11ae1\");\nconst zip=b.length>=4&&b[0]===0x50&&b[1]===0x4b;\nconst htmlLike=new TextDecoder().decode(b.slice(0,200)).toLowerCase().includes(\"<html\");\nconst key=\"pb/2008-r45-public-problem-attachment/exact.hwp\";\nif(r.ok && ole) await blob.set(key,b);\nconst out={ok:r.ok&&ole,http:r.status,contentType:r.headers.get(\"content-type\"),contentLength:r.headers.get(\"content-length\"),finalUrl:r.url,resolved,bytes:b.length,sha256:digest,head32:head,ole,zip,htmlLike,key:(r.ok&&ole)?key:null};\nconsole.log(JSON.stringify(out)); export default out;",[335],"2d07c64b-23ac-4fc8-a137-d2b37271a09a",["D",1789606206004],[27],"2f290575-b1e7-4809-bcc1-d629b9e61c09","extract_nested_2008_2012.ts","aa900994-b231-11f1-9a9b-1607ee4eb77e",10,["D",1789606180687],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\nconst ID=\"1mYCJAhtlVRL0kmjjuyUxwXYww3tFfvZP\";\nconst BASE=`https://drive.usercontent.google.com/download?id=${ID}&export=download&confirm=t`;\nconst OUTER={name:\"PB_QNET_RAW_2008_2012.zip\",localOffset:7562,compressed:30056851,uncompressed:30052060,method:8};\nconst TARGET={bytes:204800,sha256:\"6b28e58708665670425ef0e8a2241e9f34153595ffca9a909ca01b1a15584b2e\"};\nfunction u16(b:Uint8Array,o:number){return b[o]|(b[o+1]<<8)}\nfunction u32(b:Uint8Array,o:number){return (b[o]|(b[o+1]<<8)|(b[o+2]<<16)|(b[o+3]<<24))>>>0}\nfunction hex(buf:ArrayBuffer){return [...new Uint8Array(buf)].map(b=>b.toString(16).padStart(2,\"0\")).join(\"\");}\nasync function sha(b:Uint8Array){return hex(await crypto.subtle.digest(\"SHA-256\",b));}\nasync function range(a:number,z:number){const r=await fetch(BASE,{headers:{Range:`bytes=${a}-${z}`,\"user-agent\":\"Mozilla/5.0\"}});if(r.status!==206)throw new Error(`range http ${r.status}`);return new Uint8Array(await r.arrayBuffer());}\nconst lh=await range(OUTER.localOffset,OUTER.localOffset+4095);\nif(!(lh[0]===0x50&&lh[1]===0x4b&&lh[2]===0x03&&lh[3]===0x04))throw new Error(\"bad outer local header\");\nconst nl=u16(lh,26),el=u16(lh,28),dataStart=OUTER.localOffset+30+nl+el;\nconst comp=await range(dataStart,dataStart+OUTER.compressed-1);\nconst ds=new DecompressionStream(\"deflate-raw\");\nconst nested=new Uint8Array(await new Response(new Blob([comp]).stream().pipeThrough(ds)).arrayBuffer());\nif(nested.length!==OUTER.uncompressed) throw new Error(`nested size mismatch ${nested.length}`);\nawait blob.set(\"pb/2008-2012/nested_exact.zip\",nested);\n// parse nested central directory\nconst min=Math.max(0,nested.length-65557);let e=-1;\nfor(let i=nested.length-22;i>=min;i--){if(nested[i]===0x50&&nested[i+1]===0x4b&&nested[i+2]===0x05&&nested[i+3]===0x06){e=i;break;}}\nif(e<0)throw new Error(\"nested EOCD not found\");\nconst entries=u16(nested,e+10),cdSize=u32(nested,e+12),cdOffset=u32(nested,e+16);\nconst dec8=new TextDecoder(\"utf-8\"),deckr=new TextDecoder(\"euc-kr\");\nconst members:any[]=[];let p=cdOffset;\nfor(let n=0;n<entries;n++){\n if(!(nested[p]===0x50&&nested[p+1]===0x4b&&nested[p+2]===0x01&&nested[p+3]===0x02))throw new Error(`nested CD sig ${n}`);\n const flags=u16(nested,p+8),method=u16(nested,p+10),crc=u32(nested,p+16).toString(16).padStart(8,\"0\"),c=u32(nested,p+20),u=u32(nested,p+24),nlen=u16(nested,p+28),xlen=u16(nested,p+30),clen=u16(nested,p+32),local=u32(nested,p+42);\n const nb=nested.slice(p+46,p+46+nlen); const name=(flags&0x800?dec8:deckr).decode(nb);\n members.push({i:n+1,name,method,compressed:c,uncompressed:u,crc32:crc,localOffset:local});\n p+=46+nlen+xlen+clen;\n}\nconst candidates=members.filter(x=>x.uncompressed===TARGET.bytes||/2008|45|자연|과학|hwp/i.test(x.name));\nconsole.log(JSON.stringify({outer:{dataStart,compressed:comp.length},nested:{bytes:nested.length,sha256:await sha(nested),entries,cdSize,cdOffset},candidateCount:candidates.length,candidates}));\nexport default {nestedBytes:nested.length,entries,candidates};",[345],"4b14e97a-3f79-4e46-9594-9171af9222eb","extract_child.ts","01a0acbd-7f43-7437-9e32-e96d025258b5",["D",1789604495107],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\nimport { inflateSync } from \"npm:fflate\";\nimport { PDFDocument } from \"npm:pdf-lib\";\n\nconst PARENT_KEY=\"pb/2020-r57-first-stage-parent/exact.zip\";\nconst CHILD_KEY=\"pb/2020-r57-natural-science-a/exact.pdf\";\nconst META_KEY=\"pb/2020-r57-natural-science-a/provenance.json\";\nconst TARGET_NAME=\"제57회 변리사 1차 문제지 원본(PDF)/3교시 A형-hwp.pdf\";\nconst EXPECTED_CHILD_BYTES=5_581_665;\nconst HISTORICAL_SHA_PREFIX=\"96a5df8f\";\nconst HISTORICAL_SHA_SUFFIX=\"d86b87\";\n\nfunction hex(buf:ArrayBuffer){return [...new Uint8Array(buf)].map(b=>b.toString(16).padStart(2,\"0\")).join(\"\");}\nasync function sha256(b:Uint8Array){return hex(await crypto.subtle.digest(\"SHA-256\",b));}\nfunction u16(b:Uint8Array,o:number){return b[o]|(b[o+1]<<8);}\nfunction u32(b:Uint8Array,o:number){return (b[o]|(b[o+1]<<8)|(b[o+2]<<16)|(b[o+3]<<24))>>>0;}\nfunction decodeName(bytes:Uint8Array,utf8:boolean){try{return new TextDecoder(utf8?\"utf-8\":\"euc-kr\").decode(bytes);}catch{return new TextDecoder(\"utf-8\").decode(bytes);}}\nfunction listZipMembers(b:Uint8Array){\n const min=Math.max(0,b.length-65557); let eocd=-1;\n for(let i=b.length-22;i>=min;i--){if(b[i]===0x50&&b[i+1]===0x4b&&b[i+2]===0x05&&b[i+3]===0x06){eocd=i;break;}}\n if(eocd<0)throw new Error(\"EOCD not found\");\n const entries=u16(b,eocd+10),cdOffset=u32(b,eocd+16); const out:any[]=[]; let p=cdOffset;\n for(let n=0;n<entries;n++){\n if(!(b[p]===0x50&&b[p+1]===0x4b&&b[p+2]===0x01&&b[p+3]===0x02))throw new Error(\"bad central dir\");\n const flags=u16(b,p+8),method=u16(b,p+10),crc32=u32(b,p+16).toString(16).padStart(8,\"0\");\n const compressed=u32(b,p+20),uncompressed=u32(b,p+24);\n const nameLen=u16(b,p+28),extraLen=u16(b,p+30),commentLen=u16(b,p+32),localOffset=u32(b,p+42);\n const name=decodeName(b.slice(p+46,p+46+nameLen),Boolean(flags&0x800));\n out.push({name,flags,method,crc32,compressed,uncompressed,localOffset});\n p+=46+nameLen+extraLen+commentLen;\n }\n return out;\n}\nfunction extractMember(zip:Uint8Array,m:any){\n const p=m.localOffset;\n if(!(zip[p]===0x50&&zip[p+1]===0x4b&&zip[p+2]===0x03&&zip[p+3]===0x04))throw new Error(\"bad local header\");\n const nameLen=u16(zip,p+26),extraLen=u16(zip,p+28);\n const dataStart=p+30+nameLen+extraLen;\n const compressed=zip.slice(dataStart,dataStart+m.compressed);\n if(m.method===0)return compressed;\n if(m.method===8)return inflateSync(compressed);\n throw new Error(\"unsupported compression method \"+m.method);\n}\n\nconst t0=Date.now();\nconst parentRes=await blob.get(PARENT_KEY);\nconst parent=new Uint8Array(await parentRes.arrayBuffer());\nconst members=listZipMembers(parent);\nconst m=members.find(x=>x.name===TARGET_NAME) ?? members.find(x=>/3교시 A형/.test(x.name));\nif(!m)throw new Error(\"target member not found\");\nconst child=extractMember(parent,m);\nconst digest=await sha256(child);\nconst pdfLike=new TextDecoder().decode(child.slice(0,8)).startsWith(\"%PDF-\");\nconst pdf=await PDFDocument.load(child,{ignoreEncryption:true,updateMetadata:false});\nconst pages=pdf.getPageCount();\nconst lineageShape=digest.startsWith(HISTORICAL_SHA_PREFIX)&&digest.endsWith(HISTORICAL_SHA_SUFFIX);\nconst exactSize=child.length===EXPECTED_CHILD_BYTES;\nconst ok=pdfLike&&exactSize&&lineageShape;\nif(ok){\n await blob.set(CHILD_KEY,child);\n await blob.setJSON(META_KEY,{\n accepted_at:new Date().toISOString(),\n parent_key:PARENT_KEY,\n parent_bytes:parent.length,\n member:m,\n child_key:CHILD_KEY,\n child_bytes:child.length,\n child_sha256:digest,\n pdf_like:pdfLike,\n page_count:pages,\n historical_lineage:{bytes:EXPECTED_CHILD_BYTES,sha_prefix:HISTORICAL_SHA_PREFIX,sha_suffix:HISTORICAL_SHA_SUFFIX,shape_match:lineageShape},\n });\n}\nconst result={ok,parent_bytes:parent.length,member:m,child_bytes:child.length,child_sha256:digest,pdf_like:pdfLike,page_count:pages,exact_size:exactSize,historical_lineage_shape_match:lineageShape,child_key:ok?CHILD_KEY:null,elapsed_ms:Date.now()-t0};\nconsole.log(JSON.stringify(result));\nexport default result;",[352],"f39afdc0-d27e-45b6-9bdf-461441e936f3","contact_13_19.ts","01a0acbd-7f43-7437-9e32-e5b33eff79a5",["D",1789604495107],"import { blob } from \"https://esm.town/v/std/blob/main.ts\";\nimport { Jimp } from \"npm:jimp\";\nexport default async function(req:Request){\n const pages=[13,14,15,16,17,18,19];\n const thumbs:any[]=[];\n for(const p of pages){\n const res=await 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Diff · v11