58 lines
3.2 KiB
TypeScript
58 lines
3.2 KiB
TypeScript
import type {ProjectManifest} from './types';
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const TEXT_EXTENSIONS=/\.(?:xml|urdf|txt|obj|mtl|csv|json|yaml|yml)$/i;
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const decoder=new TextDecoder('utf-8',{fatal:false});
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const encoder=new TextEncoder();
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export function isEditableSource(path:string):boolean{return TEXT_EXTENSIONS.test(path);}
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export function editableSourcePaths(manifest:ProjectManifest):string[]{
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return manifest.files.filter(file=>isEditableSource(file.path)).map(file=>file.path).sort((a,b)=>a.localeCompare(b));
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}
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export function readCachedText(manifest:ProjectManifest,path:string):string{
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const file=manifest.files.find(candidate=>candidate.path===path);
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if(!file)throw new Error(`缓存中找不到文件：${path}`);
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if(!isEditableSource(path))throw new Error(`不支持编辑二进制文件：${path}`);
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return decoder.decode(file.data);
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}
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/** 返回只更新浏览器会话内存的新工程清单，不接触用户本地文件系统。 */
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export function mergeCachedFiles(manifest:ProjectManifest,additional:ProjectManifest['files']):ProjectManifest{
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if(!additional.length)return manifest;
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const byPath=new Map(manifest.files.map(file=>[file.path,file]));
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for(const file of additional)byPath.set(file.path,file);
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const files=Array.from(byPath.values());
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return {...manifest,files,totalBytes:files.reduce((total,item)=>total+item.size,0)};
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}
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export function upsertCachedMjcf(manifest:ProjectManifest,path:string,text:string):ProjectManifest{
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const data=encoder.encode(text),index=manifest.files.findIndex(candidate=>candidate.path===path);
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const files=manifest.files.slice();
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const file={path,data,size:data.byteLength,source:'file' as const,mimeType:'application/xml'};
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if(index<0)files.push(file);else files[index]={...files[index],...file};
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const entries=manifest.entries.some(entry=>entry.path===path)?manifest.entries:[...manifest.entries,{path,format:'mjcf' as const,label:`${path} (MJCF 缓存)`}];
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return {...manifest,files,entries,totalBytes:files.reduce((total,item)=>total+item.size,0)};
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}
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export function updateCachedText(manifest:ProjectManifest,path:string,text:string):ProjectManifest{
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const index=manifest.files.findIndex(candidate=>candidate.path===path);
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if(index<0)throw new Error(`缓存中找不到文件：${path}`);
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if(!isEditableSource(path))throw new Error(`不支持编辑二进制文件：${path}`);
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const data=encoder.encode(text),files=manifest.files.slice();
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files[index]={...files[index],data,size:data.byteLength,mimeType:files[index].mimeType||'text/plain'};
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return {...manifest,files,totalBytes:files.reduce((total,file)=>total+file.size,0)};
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}
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export function downloadBytes(data:Uint8Array,fileName:string,mimeType='application/xml'):void{
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const blob=new Blob([data as BlobPart],{type:`${mimeType};charset=utf-8`});
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const url=URL.createObjectURL(blob),anchor=document.createElement('a');
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anchor.href=url;anchor.download=fileName;anchor.style.display='none';document.body.append(anchor);anchor.click();anchor.remove();
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setTimeout(()=>URL.revokeObjectURL(url),0);
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}
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export function exportedFileName(projectName:string,extension:'urdf'|'xml'):string{
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const stem=projectName.replace(/\.(?:zip|xml|urdf)$/i,'').replace(/[^\p{L}\p{N}._-]+/gu,'_')||'model';
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return `${stem}.${extension}`;
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}
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