diff --git a/.gitignore b/.gitignore index fb7b616c..37e6cd6a 100644 --- a/.gitignore +++ b/.gitignore @@ -1,2 +1,5 @@ /node_modules/ -.env \ No newline at end of file +.env +/testFiles/ +/ignore/ +*.code-workspace \ No newline at end of file diff --git a/public/exampleWorkflows.js b/public/exampleWorkflows.js index 1d84885e..f13b9ad8 100644 --- a/public/exampleWorkflows.js +++ b/public/exampleWorkflows.js @@ -122,4 +122,18 @@ export const rotateOnly = { operations: [] } ] +} + +// Split a document up into multiple documents +export const imposeOnly = { + outputOptions: { + zip: false + }, + operations: [ + { + type: "impose", + values: { "nup": 2, "format": "A4L" }, + operations: [] + } + ] } \ No newline at end of file diff --git a/public/functions/impose.js b/public/functions/impose.js new file mode 100644 index 00000000..a2909cc9 --- /dev/null +++ b/public/functions/impose.js @@ -0,0 +1,5 @@ +import * as pdfcpuWraopper from "../wasm/pdfcpu-wrapper.js"; + +export function impose(snapshot, nup, format) { + return pdfcpuWraopper.impose(snapshot, nup, format); +} \ No newline at end of file diff --git a/public/index.html b/public/index.html index 821533bc..f1cf9669 100644 --- a/public/index.html +++ b/public/index.html @@ -5,9 +5,12 @@ Document + + + diff --git a/public/index.js b/public/index.js index c4a68ab6..7153dab2 100644 --- a/public/index.js +++ b/public/index.js @@ -25,34 +25,5 @@ import { traverseOperations } from "./traverseOperations.js"; results.forEach(result => { download(result.buffer, result.fileName, "application/pdf"); }); - - // if(files.length > 1) { - // files.forEach(file => { - - // }); - // } - // else { - // const file = files[0]; - // let pdfBuffer = new Uint8Array(await file.arrayBuffer()); - // if (file) { - // for (let i = 0; i < selectedElementsList.length; i++) { - // const selectedOption = selectedElementsList[i]; - - // // Perform actions based on the selected option using the switch statement - // switch (selectedOption.textContent) { - // case "scaleContent": - // pdfBuffer = await scaleContent(pdfBuffer, 2); - // break; - // case "changePageSize": - // pdfBuffer = await scalePage(pdfBuffer, PageSize.letter); - // break; - // default: - // // Handle any other actions or errors here - // throw new Error(`This action ${selectedOption.value} has not been implemented.`); - // } - // } - // download(pdfBuffer, file.name.replace(/\.[^/.]+$/, "") + "_mod.pdf", "application/pdf"); - // } - // } }); -})(exampleWorkflows.rotateOnly); +})(exampleWorkflows.imposeOnly); \ No newline at end of file diff --git a/public/traverseOperations.js b/public/traverseOperations.js index e664a3a7..a3c84041 100644 --- a/public/traverseOperations.js +++ b/public/traverseOperations.js @@ -1,4 +1,5 @@ import { extractPages } from "./functions/extractPages.js"; +import { impose } from "./functions/impose.js"; import { mergePDFs } from "./functions/mergePDFs.js"; import { rotatePages } from "./functions/rotatePDF.js"; import { splitPDF } from "./functions/splitPDF.js"; @@ -18,7 +19,6 @@ export async function traverseOperations(operations, input) { } for (let i = 0; i < operations.length; i++) { - console.warn(input); await computeOperation(operations[i], structuredClone(input)); // break references } } @@ -55,14 +55,12 @@ export async function traverseOperations(operations, input) { case "extract": if(Array.isArray(input)) { for (let i = 0; i < input.length; i++) { - // TODO: modfiy input input[i].fileName += "_extractedPages"; input[i].buffer = await extractPages(input[i].buffer, operation.values["pagesToExtractArray"]); await nextOperation(operation.operations, input[i]); } } else { - // TODO: modfiy input input.fileName += "_extractedPages"; input.buffer = await extractPages(input.buffer, operation.values["pagesToExtractArray"]); await nextOperation(operation.operations, input); @@ -161,14 +159,12 @@ export async function traverseOperations(operations, input) { case "extract": if(Array.isArray(input)) { for (let i = 0; i < input.length; i++) { - // TODO: modfiy input input[i].fileName += "_extractedPages"; input[i].buffer = await extractPages(input[i].buffer, operation.values["pagesToExtractArray"]); await nextOperation(operation.operations, input[i]); } } else { - // TODO: modfiy input input.fileName += "_extractedPages"; input.buffer = await extractPages(input.buffer, operation.values["pagesToExtractArray"]); await nextOperation(operation.operations, input); @@ -177,19 +173,31 @@ export async function traverseOperations(operations, input) { case "rotate": if(Array.isArray(input)) { for (let i = 0; i < input.length; i++) { - // TODO: modfiy input input[i].fileName += "_turned"; input[i].buffer = await rotatePages(input[i].buffer, operation.values["rotation"]); await nextOperation(operation.operations, input[i]); } } else { - // TODO: modfiy input input.fileName += "_turned"; input.buffer = await rotatePages(input.buffer, operation.values["rotation"]); await nextOperation(operation.operations, input); } break; + case "impose": + if(Array.isArray(input)) { + for (let i = 0; i < input.length; i++) { + input[i].fileName += "_imposed"; + input[i].buffer = await impose(input[i].buffer, operation.values["nup"], operation.values["format"]); + await nextOperation(operation.operations, input[i]); + } + } + else { + input.fileName += "_imposed"; + input.buffer = await impose(input.buffer, operation.values["nup"], operation.values["format"]); + await nextOperation(operation.operations, input); + } + break; default: console.log("operation type unknown: ", operation.type); break; diff --git a/public/wasm/browserfs.min.js b/public/wasm/browserfs.min.js new file mode 100644 index 00000000..a9eca25c --- /dev/null +++ b/public/wasm/browserfs.min.js @@ -0,0 +1,8 @@ +!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof 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this.store.name()},n.prototype.isReadOnly=function(){return!1},n.prototype.supportsSymlinks=function(){return!1},n.prototype.supportsProps=function(){return!1},n.prototype.supportsSynch=function(){return!1},n.prototype.empty=function(t){var e=this;this.store.clear(function(n){Ot(n,t)&&e.makeRootDirectory(t)})},n.prototype.rename=function(e,n,r){var i=this,o=this.store.beginTransaction("readwrite"),s=be.dirname(e),a=be.basename(e),c=be.dirname(n),u=be.basename(n),f={},h={},p=!1;if(0===(c+"/").indexOf(e+"/"))return r(new ke(we.EBUSY,s));var l=function(){if(!p&&h.hasOwnProperty(s)&&h.hasOwnProperty(c)){var l=h[s],d=f[s],y=h[c],g=f[c];if(l[a]){var _=l[a];delete l[a];var m=function(){y[u]=_,o.put(d.id,t.from(JSON.stringify(l)),!0,function(e){Ft(e,o,r)&&(s===c?o.commit(r):o.put(g.id,t.from(JSON.stringify(y)),!0,function(t){Ft(t,o,r)&&o.commit(r)}))})};y[u]?i.getINode(o,n,y[u],function(t,e){Ft(t,o,r)&&(e.isFile()?o.del(e.id,function(t){Ft(t,o,r)&&o.del(y[u],function(t){Ft(t,o,r)&&m()})}):o.abort(function(t){r(ke.EPERM(n))}))}):m()}else r(ke.ENOENT(e))}},d=function(t){i.findINodeAndDirListing(o,t,function(e,n,i){e?p||(p=!0,o.abort(function(){r(e)})):(f[t]=n,h[t]=i,l())})};d(s),s!==c&&d(c)},n.prototype.stat=function(t,e,n){var r=this.store.beginTransaction("readonly");this.findINode(r,t,function(t,e){Ot(t,n)&&n(null,e.toStats())})},n.prototype.createFile=function(t,e,n,r){var i=this,o=this.store.beginTransaction("readwrite"),s=E();this.commitNewFile(o,t,Fe.FILE,n,s,function(n,o){Ot(n,r)&&r(null,new Sr(i,t,e,o.toStats(),s))})},n.prototype.openFile=function(t,e,n){var r=this,i=this.store.beginTransaction("readonly");this.findINode(i,t,function(o,s){Ot(o,n)&&i.get(s.id,function(i,o){Ot(i,n)&&(void 0===o?n(ke.ENOENT(t)):n(null,new Sr(r,t,e,s.toStats(),o)))})})},n.prototype.unlink=function(t,e){this.removeEntry(t,!1,e)},n.prototype.rmdir=function(t,e){var n=this;this.readdir(t,function(r,i){r?e(r):i.length>0?e(ke.ENOTEMPTY(t)):n.removeEntry(t,!0,e)})},n.prototype.mkdir=function(e,n,r){var i=this.store.beginTransaction("readwrite"),o=t.from("{}");this.commitNewFile(i,e,Fe.DIRECTORY,n,o,r)},n.prototype.readdir=function(t,e){var n=this,r=this.store.beginTransaction("readonly");this.findINode(r,t,function(i,o){Ot(i,e)&&n.getDirListing(r,t,o,function(t,n){Ot(t,e)&&e(null,Object.keys(n))})})},n.prototype._sync=function(t,e,n,r){var i=this,o=this.store.beginTransaction("readwrite");this._findINode(o,be.dirname(t),be.basename(t),function(s,a){Ft(s,o,r)&&i.getINode(o,t,a,function(t,i){if(Ft(t,o,r)){var s=i.update(n);o.put(i.id,e,!0,function(t){Ft(t,o,r)&&(s?o.put(a,i.toBuffer(),!0,function(t){Ft(t,o,r)&&o.commit(r)}):o.commit(r))})}})})},n.prototype.makeRootDirectory=function(t){var e=this.store.beginTransaction("readwrite");e.get("/",function(n,r){if(n||void 0===r){var i=(new Date).getTime(),o=new _r(It(),4096,511|Fe.DIRECTORY,i,i,i);e.put(o.id,kt(),!1,function(n){Ft(n,e,t)&&e.put("/",o.toBuffer(),!1,function(n){n?e.abort(function(){t(n)}):e.commit(t)})})}else e.commit(t)})},n.prototype._findINode=function(t,e,n,r){var i=this,o=function(t,i,o){t?r(t):o[n]?r(null,o[n]):r(ke.ENOENT(be.resolve(e,n)))};"/"===e?""===n?r(null,"/"):this.getINode(t,e,"/",function(n,s){Ot(n,r)&&i.getDirListing(t,e,s,function(t,e){o(t,0,e)})}):this.findINodeAndDirListing(t,e,o)},n.prototype.findINode=function(t,e,n){var r=this;this._findINode(t,be.dirname(e),be.basename(e),function(i,o){Ot(i,n)&&r.getINode(t,e,o,n)})},n.prototype.getINode=function(t,e,n,r){t.get(n,function(t,n){Ot(t,r)&&(void 0===n?r(ke.ENOENT(e)):r(null,_r.fromBuffer(n)))})},n.prototype.getDirListing=function(t,e,n,r){n.isDirectory()?t.get(n.id,function(t,n){if(Ot(t,r))try{r(null,JSON.parse(n.toString()))}catch(t){r(ke.ENOENT(e))}}):r(ke.ENOTDIR(e))},n.prototype.findINodeAndDirListing=function(t,e,n){var r=this;this.findINode(t,e,function(i,o){Ot(i,n)&&r.getDirListing(t,e,o,function(t,e){Ot(t,n)&&n(null,o,e)})})},n.prototype.addNewNode=function(t,e,n){var r,i=0,o=function(){5==++i?n(new ke(we.EIO,"Unable to commit data to key-value store.")):(r=It(),t.put(r,e,!1,function(t,e){t||!e?o():n(null,r)}))};o()},n.prototype.commitNewFile=function(e,n,r,i,o,s){var a=this,c=be.dirname(n),u=be.basename(n),f=(new Date).getTime();if("/"===n)return s(ke.EEXIST(n));this.findINodeAndDirListing(e,c,function(c,h,p){Ft(c,e,s)&&(p[u]?e.abort(function(){s(ke.EEXIST(n))}):a.addNewNode(e,o,function(n,c){if(Ft(n,e,s)){var l=new _r(c,o.length,i|r,f,f,f);a.addNewNode(e,l.toBuffer(),function(n,r){Ft(n,e,s)&&(p[u]=r,e.put(h.id,t.from(JSON.stringify(p)),!0,function(t){Ft(t,e,s)&&e.commit(function(t){Ft(t,e,s)&&s(null,l)})}))})}}))})},n.prototype.removeEntry=function(e,n,r){var i=this,o=this.store.beginTransaction("readwrite"),s=be.dirname(e),a=be.basename(e);this.findINodeAndDirListing(o,s,function(s,c,u){if(Ft(s,o,r))if(u[a]){var f=u[a];delete u[a],i.getINode(o,e,f,function(i,s){Ft(i,o,r)&&(!n&&s.isDirectory()?o.abort(function(){r(ke.EISDIR(e))}):n&&!s.isDirectory()?o.abort(function(){r(ke.ENOTDIR(e))}):o.del(s.id,function(e){Ft(e,o,r)&&o.del(f,function(e){Ft(e,o,r)&&o.put(c.id,t.from(JSON.stringify(u)),!0,function(t){Ft(t,o,r)&&o.commit(r)})})}))})}else o.abort(function(){r(ke.ENOENT(e))})})},n}(ze),kr=function(){this.store={}};kr.prototype.name=function(){return Ir.Name},kr.prototype.clear=function(){this.store={}},kr.prototype.beginTransaction=function(t){return new wr(this)},kr.prototype.get=function(t){return this.store[t]},kr.prototype.put=function(t,e,n){return!(!n&&this.store.hasOwnProperty(t))&&(this.store[t]=e,!0)},kr.prototype.del=function(t){delete this.store[t]};var Ir=function(t){function e(){t.call(this,{store:new kr})}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.Create=function(t,n){n(null,new e)},e}(br);Ir.Name="InMemory",Ir.Options={};var Or=Je.indexedDB||Je.mozIndexedDB||Je.webkitIndexedDB||Je.msIndexedDB,Fr=function(t,e){this.tx=t,this.store=e};Fr.prototype.get=function(t,e){try{var n=this.store.get(t);n.onerror=Rt(e),n.onsuccess=function(t){var n=t.target.result;void 0===n?e(null,n):e(null,b(n))}}catch(t){e(Nt(t))}};var Nr=function(t){function e(e,n){t.call(this,e,n)}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.prototype.put=function(t,e,n,r){try{var i,o=_(e);i=n?this.store.put(o,t):this.store.add(o,t),i.onerror=Rt(r),i.onsuccess=function(t){r(null,!0)}}catch(t){r(Nt(t))}},e.prototype.del=function(t,e){try{var n=this.store.delete(t);n.onerror=Rt(e),n.onsuccess=function(t){e()}}catch(t){e(Nt(t))}},e.prototype.commit=function(t){setTimeout(t,0)},e.prototype.abort=function(t){var e=null;try{this.tx.abort()}catch(t){e=Nt(t)}finally{t(e)}},e}(Fr),Rr=function(t,e){this.db=t,this.storeName=e};Rr.Create=function(t,e){var n=Or.open(t,1);n.onupgradeneeded=function(e){var n=e.target.result;n.objectStoreNames.contains(t)&&n.deleteObjectStore(t),n.createObjectStore(t)},n.onsuccess=function(n){e(null,new Rr(n.target.result,t))},n.onerror=Rt(e,we.EACCES)},Rr.prototype.name=function(){return Tr.Name+" - "+this.storeName},Rr.prototype.clear=function(t){try{var e=this.db.transaction(this.storeName,"readwrite"),n=e.objectStore(this.storeName),r=n.clear();r.onsuccess=function(e){setTimeout(t,0)},r.onerror=Rt(t)}catch(e){t(Nt(e))}},Rr.prototype.beginTransaction=function(t){void 0===t&&(t="readonly");var e=this.db.transaction(this.storeName,t),n=e.objectStore(this.storeName);if("readwrite"===t)return new Nr(e,n);if("readonly"===t)return new Fr(e,n);throw new ke(we.EINVAL,"Invalid transaction type.")};var Tr=function(t){function e(e){t.call(this),this.store=e}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.Create=function(t,n){Rr.Create(t.storeName?t.storeName:"browserfs",function(t,r){r?n(null,new e(r)):n(t)})},e.isAvailable=function(){try{return void 0!==Or&&null!==Or.open("__browserfs_test__")}catch(t){return!1}},e}(Er);Tr.Name="IndexedDB",Tr.Options={storeName:{type:"string",optional:!0,description:"The name of this file system. 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e(){t.call(this,{store:new Dr})}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.Create=function(t,n){n(null,new e)},e.isAvailable=function(){return void 0!==Je.localStorage},e}(br);Ar.Name="LocalStorage",Ar.Options={};var Pr=function(t){function e(e){t.call(this),this.mountList=[],this.mntMap={},this.rootFs=e}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.Create=function(t,n){Ir.Create({},function(r,i){if(i){var o=new e(i);try{Object.keys(t).forEach(function(e){o.mount(e,t[e])})}catch(r){return n(r)}n(null,o)}else n(r)})},e.isAvailable=function(){return!0},e.prototype.mount=function(t,e){if("/"!==t[0]&&(t="/"+t),t=be.resolve(t),this.mntMap[t])throw new ke(we.EINVAL,"Mount point "+t+" is already taken.");g(t,511,this.rootFs),this.mntMap[t]=e,this.mountList.push(t),this.mountList=this.mountList.sort(function(t,e){return e.length-t.length})},e.prototype.umount=function(t){var e=this;if("/"!==t[0]&&(t="/"+t),t=be.resolve(t),!this.mntMap[t])throw new ke(we.EINVAL,"Mount point "+t+" is already unmounted.");for(delete this.mntMap[t],this.mountList.splice(this.mountList.indexOf(t),1);"/"!==t&&0===e.rootFs.readdirSync(t).length;)e.rootFs.rmdirSync(t),t=be.dirname(t)},e.prototype._getFs=function(t){for(var e=this,n=this.mountList,r=n.length,i=0;i1?o.length:0),""===t&&(t="/"),{fs:e.mntMap[o],path:t}}return{fs:this.rootFs,path:t}},e.prototype.getName=function(){return e.Name},e.prototype.diskSpace=function(t,e){e(0,0)},e.prototype.isReadOnly=function(){return!1},e.prototype.supportsLinks=function(){return!1},e.prototype.supportsProps=function(){return!1},e.prototype.supportsSynch=function(){return!0},e.prototype.standardizeError=function(t,e,n){var r=t.message.indexOf(e);return-1!==r&&(t.message=t.message.substr(0,r)+n+t.message.substr(r+e.length),t.path=n),t},e.prototype.rename=function(t,e,n){var r=this,i=this._getFs(t),o=this._getFs(e);return i.fs===o.fs?i.fs.rename(i.path,o.path,function(s){s&&r.standardizeError(r.standardizeError(s,i.path,t),o.path,e),n(s)}):xe.readFile(t,function(r,i){if(r)return n(r);xe.writeFile(e,i,function(e){if(e)return n(e);xe.unlink(t,n)})})},e.prototype.renameSync=function(t,e){var n=this._getFs(t),r=this._getFs(e);if(n.fs===r.fs)try{return n.fs.renameSync(n.path,r.path)}catch(i){throw this.standardizeError(this.standardizeError(i,n.path,t),r.path,e),i}var i=xe.readFileSync(t);return xe.writeFileSync(e,i),xe.unlinkSync(t)},e.prototype.readdirSync=function(t){var e=this._getFs(t),n=null;if(e.fs!==this.rootFs)try{n=this.rootFs.readdirSync(t)}catch(t){}try{var r=e.fs.readdirSync(e.path);return null===n?r:r.concat(n.filter(function(t){return-1===r.indexOf(t)}))}catch(r){if(null===n)throw this.standardizeError(r,e.path,t);return n}},e.prototype.readdir=function(t,e){var n=this,r=this._getFs(t);r.fs.readdir(r.path,function(i,o){if(r.fs!==n.rootFs)try{var s=n.rootFs.readdirSync(t);o=o?o.concat(s.filter(function(t){return-1===o.indexOf(t)})):s}catch(o){if(i)return e(n.standardizeError(i,r.path,t))}else if(i)return e(n.standardizeError(i,r.path,t));e(null,o)})},e.prototype.rmdirSync=function(t){var e=this._getFs(t);if(this._containsMountPt(t))throw ke.ENOTEMPTY(t);try{e.fs.rmdirSync(e.path)}catch(n){throw this.standardizeError(n,e.path,t)}},e.prototype.rmdir=function(t,e){var n=this,r=this._getFs(t);this._containsMountPt(t)?e(ke.ENOTEMPTY(t)):r.fs.rmdir(r.path,function(i){e(i?n.standardizeError(i,r.path,t):null)})},e.prototype._containsMountPt=function(t){for(var e=this.mountList,n=e.length,r=0;r=t.length&&i.slice(0,t.length)===t)return!0}return!1},e}(ze);Pr.Name="MountableFileSystem",Pr.Options={};for(var Cr=[["exists","unlink","readlink"],["stat","mkdir","realpath","truncate"],["open","readFile","chmod","utimes"],["chown"],["writeFile","appendFile"]],Ur=0;Ur"},Vr.prototype.getFSUnlocked=function(){return this._fs},Vr.prototype.diskSpace=function(t,e){this._fs.diskSpace(t,e)},Vr.prototype.isReadOnly=function(){return this._fs.isReadOnly()},Vr.prototype.supportsLinks=function(){return this._fs.supportsLinks()},Vr.prototype.supportsProps=function(){return this._fs.supportsProps()},Vr.prototype.supportsSynch=function(){return this._fs.supportsSynch()},Vr.prototype.rename=function(t,e,n){var r=this;this._mu.lock(function(){r._fs.rename(t,e,function(t){r._mu.unlock(),n(t)})})},Vr.prototype.renameSync=function(t,e){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.renameSync(t,e)},Vr.prototype.stat=function(t,e,n){var r=this;this._mu.lock(function(){r._fs.stat(t,e,function(t,e){r._mu.unlock(),n(t,e)})})},Vr.prototype.statSync=function(t,e){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.statSync(t,e)},Vr.prototype.open=function(t,e,n,r){var i=this;this._mu.lock(function(){i._fs.open(t,e,n,function(t,e){i._mu.unlock(),r(t,e)})})},Vr.prototype.openSync=function(t,e,n){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.openSync(t,e,n)},Vr.prototype.unlink=function(t,e){var n=this;this._mu.lock(function(){n._fs.unlink(t,function(t){n._mu.unlock(),e(t)})})},Vr.prototype.unlinkSync=function(t){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.unlinkSync(t)},Vr.prototype.rmdir=function(t,e){var n=this;this._mu.lock(function(){n._fs.rmdir(t,function(t){n._mu.unlock(),e(t)})})},Vr.prototype.rmdirSync=function(t){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.rmdirSync(t)},Vr.prototype.mkdir=function(t,e,n){var r=this;this._mu.lock(function(){r._fs.mkdir(t,e,function(t){r._mu.unlock(),n(t)})})},Vr.prototype.mkdirSync=function(t,e){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.mkdirSync(t,e)},Vr.prototype.readdir=function(t,e){var n=this;this._mu.lock(function(){n._fs.readdir(t,function(t,r){n._mu.unlock(),e(t,r)})})},Vr.prototype.readdirSync=function(t){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.readdirSync(t)},Vr.prototype.exists=function(t,e){var n=this;this._mu.lock(function(){n._fs.exists(t,function(t){n._mu.unlock(),e(t)})})},Vr.prototype.existsSync=function(t){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.existsSync(t)},Vr.prototype.realpath=function(t,e,n){var r=this;this._mu.lock(function(){r._fs.realpath(t,e,function(t,e){r._mu.unlock(),n(t,e)})})},Vr.prototype.realpathSync=function(t,e){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.realpathSync(t,e)},Vr.prototype.truncate=function(t,e,n){var r=this;this._mu.lock(function(){r._fs.truncate(t,e,function(t){r._mu.unlock(),n(t)})})},Vr.prototype.truncateSync=function(t,e){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.truncateSync(t,e)},Vr.prototype.readFile=function(t,e,n,r){var i=this;this._mu.lock(function(){i._fs.readFile(t,e,n,function(t,e){i._mu.unlock(),r(t,e)})})},Vr.prototype.readFileSync=function(t,e,n){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.readFileSync(t,e,n)},Vr.prototype.writeFile=function(t,e,n,r,i,o){var s=this;this._mu.lock(function(){s._fs.writeFile(t,e,n,r,i,function(t){s._mu.unlock(),o(t)})})},Vr.prototype.writeFileSync=function(t,e,n,r,i){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.writeFileSync(t,e,n,r,i)},Vr.prototype.appendFile=function(t,e,n,r,i,o){var s=this;this._mu.lock(function(){s._fs.appendFile(t,e,n,r,i,function(t){s._mu.unlock(),o(t)})})},Vr.prototype.appendFileSync=function(t,e,n,r,i){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.appendFileSync(t,e,n,r,i)},Vr.prototype.chmod=function(t,e,n,r){var i=this;this._mu.lock(function(){i._fs.chmod(t,e,n,function(t){i._mu.unlock(),r(t)})})},Vr.prototype.chmodSync=function(t,e,n){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.chmodSync(t,e,n)},Vr.prototype.chown=function(t,e,n,r,i){var o=this;this._mu.lock(function(){o._fs.chown(t,e,n,r,function(t){o._mu.unlock(),i(t)})})},Vr.prototype.chownSync=function(t,e,n,r){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.chownSync(t,e,n,r)},Vr.prototype.utimes=function(t,e,n,r){var i=this;this._mu.lock(function(){i._fs.utimes(t,e,n,function(t){i._mu.unlock(),r(t)})})},Vr.prototype.utimesSync=function(t,e,n){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.utimesSync(t,e,n)},Vr.prototype.link=function(t,e,n){var r=this;this._mu.lock(function(){r._fs.link(t,e,function(t){r._mu.unlock(),n(t)})})},Vr.prototype.linkSync=function(t,e){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.linkSync(t,e)},Vr.prototype.symlink=function(t,e,n,r){var i=this;this._mu.lock(function(){i._fs.symlink(t,e,n,function(t){i._mu.unlock(),r(t)})})},Vr.prototype.symlinkSync=function(t,e,n){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.symlinkSync(t,e,n)},Vr.prototype.readlink=function(t,e){var n=this;this._mu.lock(function(){n._fs.readlink(t,function(t,r){n._mu.unlock(),e(t,r)})})},Vr.prototype.readlinkSync=function(t){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.readlinkSync(t)};var Wr="/.deletedFiles.log",Hr=function(t){function e(e,n,r,i,o){t.call(this,e,n,r,i,o)}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.prototype.sync=function(t){var e=this;if(!this.isDirty())return void t(null);this._fs._syncAsync(this,function(n){e.resetDirty(),t(n)})},e.prototype.syncSync=function(){this.isDirty()&&(this._fs._syncSync(this),this.resetDirty())},e.prototype.close=function(t){this.sync(t)},e.prototype.closeSync=function(){this.syncSync()},e}(We),Zr=function(t){function e(e,n){if(t.call(this),this._isInitialized=!1,this._initializeCallbacks=[],this._deletedFiles={},this._deleteLog="",this._deleteLogUpdatePending=!1,this._deleteLogUpdateNeeded=!1,this._deleteLogError=null,this._writable=e,this._readable=n,this._writable.isReadOnly())throw new ke(we.EINVAL,"Writable file system must be writable.")}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.isAvailable=function(){return!0},e.prototype.getOverlayedFileSystems=function(){return{readable:this._readable,writable:this._writable}},e.prototype._syncAsync=function(t,e){var n=this;this.createParentDirectoriesAsync(t.getPath(),function(r){if(r)return e(r);n._writable.writeFile(t.getPath(),t.getBuffer(),null,xt("w"),t.getStats().mode,e)})},e.prototype._syncSync=function(t){this.createParentDirectories(t.getPath()),this._writable.writeFileSync(t.getPath(),t.getBuffer(),null,xt("w"),t.getStats().mode)},e.prototype.getName=function(){return Yr.Name},e.prototype._initialize=function(t){var e=this,n=this._initializeCallbacks,r=function(t){e._isInitialized=!t,e._initializeCallbacks=[],n.forEach(function(e){return e(t)})};if(this._isInitialized)return t();n.push(t),1===n.length&&this._writable.readFile(Wr,"utf8",xt("r"),function(t,n){if(t){if(t.errno!==we.ENOENT)return r(t)}else e._deleteLog=n;e._reparseDeletionLog(),r()})},e.prototype.isReadOnly=function(){return!1},e.prototype.supportsSynch=function(){return this._readable.supportsSynch()&&this._writable.supportsSynch()},e.prototype.supportsLinks=function(){return!1},e.prototype.supportsProps=function(){return this._readable.supportsProps()&&this._writable.supportsProps()},e.prototype.getDeletionLog=function(){return this._deleteLog},e.prototype.restoreDeletionLog=function(t){this._deleteLog=t,this._reparseDeletionLog(),this.updateLog("")},e.prototype.rename=function(t,e,n){var r=this;if(this.checkInitAsync(n)&&!this.checkPathAsync(t,n)&&!this.checkPathAsync(e,n))return t===Wr||e===Wr?n(ke.EPERM("Cannot rename deletion log.")):t===e?n():void this.stat(t,!1,function(i,o){return i?n(i):r.stat(e,!1,function(i,s){function a(r){var i=r.shift();if(!i)return n();var o=be.resolve(t,i),s=be.resolve(e,i);c.rename(o,s,function(t){if(t)return n(t);a(r)})}var c=r,u=511;if(o.isDirectory()){if(i)return i.errno!==we.ENOENT?n(i):r._writable.exists(t,function(i){if(i)return r._writable.rename(t,e,n);r._writable.mkdir(e,u,function(e){if(e)return n(e);r._readable.readdir(t,function(t,e){if(t)return n();a(e)})})});if(u=s.mode,!s.isDirectory())return n(ke.ENOTDIR(e));r.readdir(e,function(i,o){if(o&&o.length)return n(ke.ENOTEMPTY(e));r._readable.readdir(t,function(t,e){if(t)return n();a(e)})})}if(s&&s.isDirectory())return n(ke.EISDIR(e));r.readFile(t,null,xt("r"),function(i,s){return i?n(i):r.writeFile(e,s,null,xt("w"),o.mode,function(e){return e?n(e):r.unlink(t,n)})})})})},e.prototype.renameSync=function(t,e){var n=this;if(this.checkInitialized(),this.checkPath(t),this.checkPath(e),t===Wr||e===Wr)throw ke.EPERM("Cannot rename deletion log.");var r=this.statSync(t,!1);if(r.isDirectory()){if(t===e)return;var i=511;if(this.existsSync(e)){var o=this.statSync(e,!1);if(i=o.mode,!o.isDirectory())throw ke.ENOTDIR(e);if(this.readdirSync(e).length>0)throw ke.ENOTEMPTY(e)}this._writable.existsSync(t)?this._writable.renameSync(t,e):this._writable.existsSync(e)||this._writable.mkdirSync(e,i),this._readable.existsSync(t)&&this._readable.readdirSync(t).forEach(function(r){n.renameSync(be.resolve(t,r),be.resolve(e,r))})}else{if(this.existsSync(e)&&this.statSync(e,!1).isDirectory())throw ke.EISDIR(e);this.writeFileSync(e,this.readFileSync(t,null,xt("r")),null,xt("w"),r.mode)}t!==e&&this.existsSync(t)&&this.unlinkSync(t)},e.prototype.stat=function(t,e,n){var r=this;this.checkInitAsync(n)&&this._writable.stat(t,e,function(i,o){i&&i.errno===we.ENOENT?(r._deletedFiles[t]&&n(ke.ENOENT(t)),r._readable.stat(t,e,function(t,e){e&&(e=Ne.clone(e),e.mode=Lt(e.mode)),n(t,e)})):n(i,o)})},e.prototype.statSync=function(t,e){this.checkInitialized();try{return this._writable.statSync(t,e)}catch(r){if(this._deletedFiles[t])throw ke.ENOENT(t);var n=Ne.clone(this._readable.statSync(t,e));return n.mode=Lt(n.mode),n}},e.prototype.open=function(t,e,n,r){var i=this;this.checkInitAsync(r)&&!this.checkPathAsync(t,r)&&this.stat(t,!1,function(o,s){if(s)switch(e.pathExistsAction()){case Ee.TRUNCATE_FILE:return i.createParentDirectoriesAsync(t,function(o){if(o)return r(o);i._writable.open(t,e,n,r)});case Ee.NOP:return i._writable.exists(t,function(o){o?i._writable.open(t,e,n,r):(s=Ne.clone(s),s.mode=n,i._readable.readFile(t,null,xt("r"),function(n,o){if(n)return r(n);-1===s.size&&(s.size=o.length);var a=new Hr(i,t,e,s,o);r(null,a)}))});default:return r(ke.EEXIST(t))}else switch(e.pathNotExistsAction()){case Ee.CREATE_FILE:return i.createParentDirectoriesAsync(t,function(o){return o?r(o):i._writable.open(t,e,n,r)});default:return r(ke.ENOENT(t))}})},e.prototype.openSync=function(t,e,n){if(this.checkInitialized(),this.checkPath(t),t===Wr)throw ke.EPERM("Cannot open deletion log.");if(this.existsSync(t))switch(e.pathExistsAction()){case Ee.TRUNCATE_FILE:return this.createParentDirectories(t),this._writable.openSync(t,e,n);case Ee.NOP:if(this._writable.existsSync(t))return this._writable.openSync(t,e,n);var r=this._readable.readFileSync(t,null,xt("r")),i=Ne.clone(this._readable.statSync(t,!1));return i.mode=n,new Hr(this,t,e,i,r);default:throw ke.EEXIST(t)}else switch(e.pathNotExistsAction()){case Ee.CREATE_FILE:return this.createParentDirectories(t),this._writable.openSync(t,e,n);default:throw ke.ENOENT(t)}},e.prototype.unlink=function(t,e){var n=this;this.checkInitAsync(e)&&!this.checkPathAsync(t,e)&&this.exists(t,function(r){if(!r)return e(ke.ENOENT(t));n._writable.exists(t,function(r){if(r)return n._writable.unlink(t,function(r){if(r)return e(r);n.exists(t,function(r){r&&n.deletePath(t),e(null)})});n.deletePath(t),e(null)})})},e.prototype.unlinkSync=function(t){if(this.checkInitialized(),this.checkPath(t),!this.existsSync(t))throw ke.ENOENT(t);this._writable.existsSync(t)&&this._writable.unlinkSync(t),this.existsSync(t)&&this.deletePath(t)},e.prototype.rmdir=function(t,e){var n=this;if(this.checkInitAsync(e)){var r=function(){n.readdir(t,function(r,i){return r?e(r):i.length?e(ke.ENOTEMPTY(t)):(n.deletePath(t),void e(null))})};this.exists(t,function(i){if(!i)return e(ke.ENOENT(t));n._writable.exists(t,function(i){i?n._writable.rmdir(t,function(i){if(i)return e(i);n._readable.exists(t,function(t){t?r():e()})}):r()})})}},e.prototype.rmdirSync=function(t){if(this.checkInitialized(),!this.existsSync(t))throw ke.ENOENT(t);if(this._writable.existsSync(t)&&this._writable.rmdirSync(t),this.existsSync(t)){if(this.readdirSync(t).length>0)throw ke.ENOTEMPTY(t);this.deletePath(t)}},e.prototype.mkdir=function(t,e,n){var r=this;this.checkInitAsync(n)&&this.exists(t,function(i){if(i)return n(ke.EEXIST(t));r.createParentDirectoriesAsync(t,function(i){if(i)return n(i);r._writable.mkdir(t,e,n)})})},e.prototype.mkdirSync=function(t,e){if(this.checkInitialized(),this.existsSync(t))throw ke.EEXIST(t);this.createParentDirectories(t),this._writable.mkdirSync(t,e)},e.prototype.readdir=function(t,e){var n=this;this.checkInitAsync(e)&&this.stat(t,!1,function(r,i){return r?e(r):i.isDirectory()?void n._writable.readdir(t,function(r,i){if(r&&"ENOENT"!==r.code)return e(r);!r&&i||(i=[]),n._readable.readdir(t,function(r,o){!r&&o||(o=[]);var s={},a=i.concat(o.filter(function(e){return!n._deletedFiles[t+"/"+e]})).filter(function(t){var e=!s[t];return s[t]=!0,e});e(null,a)})}):e(ke.ENOTDIR(t))})},e.prototype.readdirSync=function(t){var e=this;if(this.checkInitialized(),!this.statSync(t,!1).isDirectory())throw ke.ENOTDIR(t);var n=[];try{n=n.concat(this._writable.readdirSync(t))}catch(t){}try{n=n.concat(this._readable.readdirSync(t).filter(function(n){return!e._deletedFiles[t+"/"+n]}))}catch(t){}var r={};return n.filter(function(t){var e=!r[t];return r[t]=!0,e})},e.prototype.exists=function(t,e){var n=this;this.checkInitialized(),this._writable.exists(t,function(r){if(r)return e(!0);n._readable.exists(t,function(r){e(r&&!0!==n._deletedFiles[t])})})},e.prototype.existsSync=function(t){return this.checkInitialized(),this._writable.existsSync(t)||this._readable.existsSync(t)&&!0!==this._deletedFiles[t]},e.prototype.chmod=function(t,e,n,r){var i=this;this.checkInitAsync(r)&&this.operateOnWritableAsync(t,function(o){if(o)return r(o);i._writable.chmod(t,e,n,r)})},e.prototype.chmodSync=function(t,e,n){var r=this;this.checkInitialized(),this.operateOnWritable(t,function(){r._writable.chmodSync(t,e,n)})},e.prototype.chown=function(t,e,n,r,i){var o=this;this.checkInitAsync(i)&&this.operateOnWritableAsync(t,function(s){if(s)return i(s);o._writable.chown(t,e,n,r,i)})},e.prototype.chownSync=function(t,e,n,r){var i=this;this.checkInitialized(),this.operateOnWritable(t,function(){i._writable.chownSync(t,e,n,r)})},e.prototype.utimes=function(t,e,n,r){var i=this;this.checkInitAsync(r)&&this.operateOnWritableAsync(t,function(o){if(o)return r(o);i._writable.utimes(t,e,n,r)})},e.prototype.utimesSync=function(t,e,n){var r=this;this.checkInitialized(),this.operateOnWritable(t,function(){r._writable.utimesSync(t,e,n)})},e.prototype.deletePath=function(t){this._deletedFiles[t]=!0,this.updateLog("d"+t+"\n")},e.prototype.updateLog=function(t){var e=this;this._deleteLog+=t,this._deleteLogUpdatePending?this._deleteLogUpdateNeeded=!0:(this._deleteLogUpdatePending=!0,this._writable.writeFile(Wr,this._deleteLog,"utf8",Oe.getFileFlag("w"),420,function(t){e._deleteLogUpdatePending=!1,t?e._deleteLogError=t:e._deleteLogUpdateNeeded&&(e._deleteLogUpdateNeeded=!1,e.updateLog(""))}))},e.prototype._reparseDeletionLog=function(){var t=this;this._deletedFiles={},this._deleteLog.split("\n").forEach(function(e){t._deletedFiles[e.slice(1)]="d"===e.slice(0,1)})},e.prototype.checkInitialized=function(){if(!this._isInitialized)throw new ke(we.EPERM,"OverlayFS is not initialized. Please initialize OverlayFS using its initialize() method before using it.");if(null!==this._deleteLogError){var t=this._deleteLogError;throw this._deleteLogError=null,t}},e.prototype.checkInitAsync=function(t){if(!this._isInitialized)return t(new ke(we.EPERM,"OverlayFS is not initialized. Please initialize OverlayFS using its initialize() method before using it.")),!1;if(null!==this._deleteLogError){var e=this._deleteLogError;return this._deleteLogError=null,t(e),!1}return!0},e.prototype.checkPath=function(t){if(t===Wr)throw ke.EPERM(t)},e.prototype.checkPathAsync=function(t,e){return t===Wr&&(e(ke.EPERM(t)),!0)},e.prototype.createParentDirectoriesAsync=function(t,e){function n(t,e){t?(o.push(i),i=be.dirname(i),s._writable.stat(i,!1,n)):r()}function r(){if(!o.length)return e();var t=o.pop();s._readable.stat(t,!1,function(n,i){if(!i)return e();s._writable.mkdir(t,i.mode,function(t){if(t)return e(t);r()})})}var i=be.dirname(t),o=[],s=this;this._writable.stat(i,!1,n)},e.prototype.createParentDirectories=function(t){for(var e=this,n=be.dirname(t),r=[];!this._writable.existsSync(n);)r.push(n),n=be.dirname(n);r=r.reverse(),r.forEach(function(t){e._writable.mkdirSync(t,e.statSync(t,!1).mode)})},e.prototype.operateOnWritable=function(t,e){if(!this.existsSync(t))throw ke.ENOENT(t);this._writable.existsSync(t)||this.copyToWritable(t),e()},e.prototype.operateOnWritableAsync=function(t,e){var n=this;this.exists(t,function(r){if(!r)return e(ke.ENOENT(t));n._writable.exists(t,function(r){if(!r)return n.copyToWritableAsync(t,e);e()})})},e.prototype.copyToWritable=function(t){var e=this.statSync(t,!1);e.isDirectory()?this._writable.mkdirSync(t,e.mode):this.writeFileSync(t,this._readable.readFileSync(t,null,xt("r")),null,xt("w"),this.statSync(t,!1).mode)},e.prototype.copyToWritableAsync=function(t,e){var n=this;this.stat(t,!1,function(r,i){return r?e(r):i.isDirectory()?n._writable.mkdir(t,i.mode,e):void n._readable.readFile(t,null,xt("r"),function(r,o){if(r)return e(r);n.writeFile(t,o,null,xt("w"),i.mode,e)})})},e}(ze),Yr=function(t){function e(e,n){t.call(this,new Zr(e,n))}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.Create=function(t,n){try{var r=new e(t.writable,t.readable);r._initialize(function(t){n(t,r)})}catch(t){n(t)}},e.isAvailable=function(){return Zr.isAvailable()},e.prototype.getOverlayedFileSystems=function(){return t.prototype.getFSUnlocked.call(this).getOverlayedFileSystems()},e.prototype.unwrap=function(){return t.prototype.getFSUnlocked.call(this)},e.prototype._initialize=function(e){t.prototype.getFSUnlocked.call(this)._initialize(e)},e}(Vr);Yr.Name="OverlayFS",Yr.Options={writable:{type:"object",description:"The file system to write modified files to."},readable:{type:"object",description:"The file system that initially populates this file system."}};var Xr;!function(t){t[t.CB=0]="CB",t[t.FD=1]="FD",t[t.API_ERROR=2]="API_ERROR",t[t.STATS=3]="STATS",t[t.PROBE=4]="PROBE",t[t.FILEFLAG=5]="FILEFLAG",t[t.BUFFER=6]="BUFFER",t[t.ERROR=7]="ERROR"}(Xr||(Xr={}));var Jr=function(){this._callbacks={},this._nextId=0};Jr.prototype.toRemoteArg=function(t){var e=this._nextId++;return this._callbacks[e]=t,{type:Xr.CB,id:e}},Jr.prototype.toLocalArg=function(t){var e=this._callbacks[t];return delete this._callbacks[t],e};var Kr=function(){this._fileDescriptors={},this._nextId=0};Kr.prototype.toRemoteArg=function(e,n,r,i){var o,s,a=this._nextId++;this._fileDescriptors[a]=e,e.stat(function(c,u){c?i(c):(s=zt(u.toBuffer()),r.isReadable()?e.read(t.alloc(u.size),0,u.size,0,function(t,e,c){t?i(t):(o=zt(c),i(null,{type:Xr.FD,id:a,data:o,stat:s,path:n,flag:r.getFlagString()}))}):i(null,{type:Xr.FD,id:a,data:new ArrayBuffer(0),stat:s,path:n,flag:r.getFlagString()}))})},Kr.prototype.applyFdAPIRequest=function(t,e){var n=this,r=t.args[0];this._applyFdChanges(r,function(i,o){i?e(i):o[t.method](function(i){"close"===t.method&&delete n._fileDescriptors[r.id],e(i)})})},Kr.prototype._applyFdChanges=function(t,e){var n=this._fileDescriptors[t.id],r=qt(t.data),i=Ne.fromBuffer(qt(t.stat)),o=Oe.getFileFlag(t.flag);o.isWriteable()?n.write(r,0,r.length,o.isAppendable()?n.getPos():0,function(t){function s(){n.stat(function(t,r){t?e(t):r.mode!==i.mode?n.chmod(i.mode,function(t){e(t,n)}):e(t,n)})}t?e(t):o.isAppendable()?s():n.truncate(r.length,function(){s()})}):e(null,n)};var Gr=function(t){function e(e,n,r,i,o,s){t.call(this,e,n,r,i,s),this._remoteFdId=o}return t&&(e.__proto__=t),e.prototype=Object.create(t&&t.prototype),e.prototype.constructor=e,e.prototype.getRemoteFdId=function(){return this._remoteFdId},e.prototype.toRemoteArg=function(){return{type:Xr.FD,id:this._remoteFdId,data:zt(this.getBuffer()),stat:zt(this.getStats().toBuffer()),path:this.getPath(),flag:this.getFlag().getFlagString()}},e.prototype.sync=function(t){this._syncClose("sync",t)},e.prototype.close=function(t){this._syncClose("close",t)},e.prototype._syncClose=function(t,e){var n=this;this.isDirty()?this._fs.syncClose(t,this,function(t){t||n.resetDirty(),e(t)}):e()},e}(We),Qr=function(e){function n(t){var n=this;e.call(this),this._callbackConverter=new Jr,this._isInitialized=!1,this._isReadOnly=!1,this._supportLinks=!1,this._supportProps=!1,this._worker=t,this._worker.addEventListener("message",function(t){var e=t.data;if(Zt(e)){var r,i=e.args,o=new Array(i.length);for(r=0;r0&&(u=-1,s={browserfsMessage:!0,cbId:o,args:[Dt(t)]},e.postMessage(s))}var i,s,a=arguments,c=new Array(arguments.length),u=arguments.length;for(i=0;i0;){var i=void 0,o=r.pop(),s=o[0],a=o[1],c=o[2];for(var u in a)if(a.hasOwnProperty(u)){var f=a[u],h=s+"/"+u;f?(e._index[h]=i=new oi,r.push([h,f,i])):i=new ii(new Ne(Fe.FILE,-1,365)),c&&(c._ls[u]=i)}}return e},ri.prototype.fileIterator=function(t){var e=this;for(var n in e._index)if(e._index.hasOwnProperty(n))for(var 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ci,ui=n(35).inflateRaw,fi={};!function(t){t[t.MSDOS=0]="MSDOS",t[t.AMIGA=1]="AMIGA",t[t.OPENVMS=2]="OPENVMS",t[t.UNIX=3]="UNIX",t[t.VM_CMS=4]="VM_CMS",t[t.ATARI_ST=5]="ATARI_ST",t[t.OS2_HPFS=6]="OS2_HPFS",t[t.MAC=7]="MAC",t[t.Z_SYSTEM=8]="Z_SYSTEM",t[t.CP_M=9]="CP_M",t[t.NTFS=10]="NTFS",t[t.MVS=11]="MVS",t[t.VSE=12]="VSE",t[t.ACORN_RISC=13]="ACORN_RISC",t[t.VFAT=14]="VFAT",t[t.ALT_MVS=15]="ALT_MVS",t[t.BEOS=16]="BEOS",t[t.TANDEM=17]="TANDEM",t[t.OS_400=18]="OS_400",t[t.OSX=19]="OSX"}(ci||(ci={}));var hi;!function(t){t[t.STORED=0]="STORED",t[t.SHRUNK=1]="SHRUNK",t[t.REDUCED_1=2]="REDUCED_1",t[t.REDUCED_2=3]="REDUCED_2",t[t.REDUCED_3=4]="REDUCED_3",t[t.REDUCED_4=5]="REDUCED_4",t[t.IMPLODE=6]="IMPLODE",t[t.DEFLATE=8]="DEFLATE",t[t.DEFLATE64=9]="DEFLATE64",t[t.TERSE_OLD=10]="TERSE_OLD",t[t.BZIP2=12]="BZIP2",t[t.LZMA=14]="LZMA",t[t.TERSE_NEW=18]="TERSE_NEW",t[t.LZ77=19]="LZ77",t[t.WAVPACK=97]="WAVPACK",t[t.PPMD=98]="PPMD"}(hi||(hi={}));var pi=function(t){if(this.data=t,67324752!==t.readUInt32LE(0))throw new ke(we.EINVAL,"Invalid Zip file: Local file header has invalid signature: "+this.data.readUInt32LE(0))};pi.prototype.versionNeeded=function(){return this.data.readUInt16LE(4)},pi.prototype.flags=function(){return this.data.readUInt16LE(6)},pi.prototype.compressionMethod=function(){return this.data.readUInt16LE(8)},pi.prototype.lastModFileTime=function(){return oe(this.data.readUInt16LE(10),this.data.readUInt16LE(12))},pi.prototype.rawLastModFileTime=function(){return this.data.readUInt32LE(10)},pi.prototype.crc32=function(){return this.data.readUInt32LE(14)},pi.prototype.fileNameLength=function(){return this.data.readUInt16LE(26)},pi.prototype.extraFieldLength=function(){return this.data.readUInt16LE(28)},pi.prototype.fileName=function(){return se(this.data,this.useUTF8(),30,this.fileNameLength())},pi.prototype.extraField=function(){var t=30+this.fileNameLength();return this.data.slice(t,t+this.extraFieldLength())},pi.prototype.totalSize=function(){return 30+this.fileNameLength()+this.extraFieldLength()},pi.prototype.useUTF8=function(){return 2048==(2048&this.flags())};var li=function(t,e,n){this.header=t,this.record=e,this.data=n};li.prototype.decompress=function(){var t=this.header.compressionMethod(),e=fi[t];if(e)return e(this.data,this.record.compressedSize(),this.record.uncompressedSize(),this.record.flag());var n=hi[t];throw n||(n="Unknown: "+t),new ke(we.EINVAL,"Invalid compression method on file '"+this.header.fileName()+"': "+n)},li.prototype.getHeader=function(){return this.header},li.prototype.getRecord=function(){return this.record},li.prototype.getRawData=function(){return this.data};var di=function(t){this.data=t};di.prototype.crc32=function(){return this.data.readUInt32LE(0)},di.prototype.compressedSize=function(){return this.data.readUInt32LE(4)},di.prototype.uncompressedSize=function(){return this.data.readUInt32LE(8)};var yi=function(t){if(this.data=t,134630224!==this.data.readUInt32LE(0))throw new ke(we.EINVAL,"Invalid archive extra data record signature: "+this.data.readUInt32LE(0))};yi.prototype.length=function(){return this.data.readUInt32LE(4)},yi.prototype.extraFieldData=function(){return this.data.slice(8,8+this.length())};var gi=function(t){if(this.data=t,84233040!==this.data.readUInt32LE(0))throw new ke(we.EINVAL,"Invalid digital signature signature: "+this.data.readUInt32LE(0))};gi.prototype.size=function(){return this.data.readUInt16LE(4)},gi.prototype.signatureData=function(){return this.data.slice(6,6+this.size())};var _i=function(t,e){if(this.zipData=t,this.data=e,33639248!==this.data.readUInt32LE(0))throw new ke(we.EINVAL,"Invalid Zip file: Central directory record has invalid signature: "+this.data.readUInt32LE(0));this._filename=this.produceFilename()};_i.prototype.versionMadeBy=function(){return this.data.readUInt16LE(4)},_i.prototype.versionNeeded=function(){return this.data.readUInt16LE(6)},_i.prototype.flag=function(){return this.data.readUInt16LE(8)},_i.prototype.compressionMethod=function(){return this.data.readUInt16LE(10)},_i.prototype.lastModFileTime=function(){return oe(this.data.readUInt16LE(12),this.data.readUInt16LE(14))},_i.prototype.rawLastModFileTime=function(){return this.data.readUInt32LE(12)},_i.prototype.crc32=function(){return this.data.readUInt32LE(16)},_i.prototype.compressedSize=function(){return this.data.readUInt32LE(20)},_i.prototype.uncompressedSize=function(){return this.data.readUInt32LE(24)},_i.prototype.fileNameLength=function(){return this.data.readUInt16LE(28)},_i.prototype.extraFieldLength=function(){return this.data.readUInt16LE(30)},_i.prototype.fileCommentLength=function(){return this.data.readUInt16LE(32)},_i.prototype.diskNumberStart=function(){return this.data.readUInt16LE(34)},_i.prototype.internalAttributes=function(){return this.data.readUInt16LE(36)},_i.prototype.externalAttributes=function(){return this.data.readUInt32LE(38)},_i.prototype.headerRelativeOffset=function(){return this.data.readUInt32LE(42)},_i.prototype.produceFilename=function(){return se(this.data,this.useUTF8(),46,this.fileNameLength()).replace(/\\/g,"/")},_i.prototype.fileName=function(){return this._filename},_i.prototype.rawFileName=function(){return this.data.slice(46,46+this.fileNameLength())},_i.prototype.extraField=function(){var t=44+this.fileNameLength();return this.data.slice(t,t+this.extraFieldLength())},_i.prototype.fileComment=function(){var t=46+this.fileNameLength()+this.extraFieldLength();return se(this.data,this.useUTF8(),t,this.fileCommentLength())},_i.prototype.rawFileComment=function(){var t=46+this.fileNameLength()+this.extraFieldLength();return this.data.slice(t,t+this.fileCommentLength())},_i.prototype.totalSize=function(){return 46+this.fileNameLength()+this.extraFieldLength()+this.fileCommentLength()},_i.prototype.isDirectory=function(){var t=this.fileName();return!!(16&this.externalAttributes())||"/"===t.charAt(t.length-1)},_i.prototype.isFile=function(){return!this.isDirectory()},_i.prototype.useUTF8=function(){return 2048==(2048&this.flag())},_i.prototype.isEncrypted=function(){return 1==(1&this.flag())},_i.prototype.getFileData=function(){var t=this.headerRelativeOffset(),e=new pi(this.zipData.slice(t));return new li(e,this,this.zipData.slice(t+e.totalSize()))},_i.prototype.getData=function(){return this.getFileData().decompress()},_i.prototype.getRawData=function(){return this.getFileData().getRawData()},_i.prototype.getStats=function(){return new Ne(Fe.FILE,this.uncompressedSize(),365,new Date,this.lastModFileTime())};var mi=function(t){if(this.data=t,101010256!==this.data.readUInt32LE(0))throw new ke(we.EINVAL,"Invalid Zip file: End of central directory record has invalid signature: "+this.data.readUInt32LE(0))};mi.prototype.diskNumber=function(){return this.data.readUInt16LE(4)},mi.prototype.cdDiskNumber=function(){return this.data.readUInt16LE(6)},mi.prototype.cdDiskEntryCount=function(){return this.data.readUInt16LE(8)},mi.prototype.cdTotalEntryCount=function(){return this.data.readUInt16LE(10)},mi.prototype.cdSize=function(){return this.data.readUInt32LE(12)},mi.prototype.cdOffset=function(){return this.data.readUInt32LE(16)},mi.prototype.cdZipCommentLength=function(){return this.data.readUInt16LE(20)},mi.prototype.cdZipComment=function(){return se(this.data,!0,22,this.cdZipCommentLength())},mi.prototype.rawCdZipComment=function(){return this.data.slice(22,22+this.cdZipCommentLength())};var wi=function(t,e,n,r){this.index=t,this.directoryEntries=e,this.eocd=n,this.data=r},vi=function(t){function e(e,n){void 0===n&&(n=""),t.call(this),this.name=n,this._index=new ri,this._directoryEntries=[],this._eocd=null,this._index=e.index,this._directoryEntries=e.directoryEntries,this._eocd=e.eocd,this.data=e.data}return 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ct:if(0===u)break t;o[a++]=n.length,u--,n.mode=rt;break;case ut:if(n.wrap){for(;l<32;){if(0===c)break t;c--,p|=i[s++]<>>16&65535|0,s=0;0!==n;){s=n>2e3?2e3:n,n-=s;do{i=i+e[r++]|0,o=o+i|0}while(--s);i%=65521,o%=65521}return i|o<<16|0}t.exports=r},function(t,e,n){"use strict";function r(t,e,n,r){var o=i,s=r+n;t^=-1;for(var a=r;a>>8^o[255&(t^e[a])];return-1^t}var i=function(){for(var t,e=[],n=0;n<256;n++){t=n;for(var r=0;r<8;r++)t=1&t?3988292384^t>>>1:t>>>1;e[n]=t}return e}();t.exports=r},function(t,e,n){"use strict";t.exports=function(t,e){var n,r,i,o,s,a,c,u,f,h,p,l,d,y,g,_,m,w,v,b,S,E,k,I,O;n=t.state,r=t.next_in,I=t.input,i=r+(t.avail_in-5),o=t.next_out,O=t.output,s=o-(e-t.avail_out),a=o+(t.avail_out-257),c=n.dmax,u=n.wsize,f=n.whave,h=n.wnext,p=n.window,l=n.hold,d=n.bits,y=n.lencode,g=n.distcode,_=(1<>>24,l>>>=v,d-=v,0===(v=w>>>16&255))O[o++]=65535&w;else{if(!(16&v)){if(0==(64&v)){w=y[(65535&w)+(l&(1<>>=v,d-=v),d<15&&(l+=I[r++]<>>24,l>>>=v,d-=v,!(16&(v=w>>>16&255))){if(0==(64&v)){w=g[(65535&w)+(l&(1<c){t.msg="invalid distance too far back",n.mode=30;break t}if(l>>>=v,d-=v,v=o-s,S>v){if((v=S-v)>f&&n.sane){t.msg="invalid distance too far back",n.mode=30;break t}if(E=0,k=p,0===h){if(E+=u-v,v2;)O[o++]=k[E++],O[o++]=k[E++],O[o++]=k[E++],b-=3;b&&(O[o++]=k[E++],b>1&&(O[o++]=k[E++]))}else{E=o-S;do{O[o++]=O[E++],O[o++]=O[E++],O[o++]=O[E++],b-=3}while(b>2);b&&(O[o++]=O[E++],b>1&&(O[o++]=O[E++]))}break}}break}}while(r>3,r-=b,d-=b<<3,l&=(1<=1&&0===P[O];O--);if(F>O&&(F=O),0===O)return u[f++]=20971520,u[f++]=20971520,p.bits=1,0;for(I=1;I0&&(0===t||1!==O))return-1;for(C[1]=0,E=1;E<15;E++)C[E+1]=C[E]+P[E];for(k=0;k852||2===t&&L>592)return 1;for(;;){w=E-R,h[k]m?(v=U[M+h[k]],b=D[A+h[k]]):(v=96,b=0),l=1<>R)+d]=w<<24|v<<16|b|0}while(0!==d);for(l=1<>=1;if(0!==l?(x&=l-1,x+=l):x=0,k++,0==--P[E]){if(E===O)break;E=e[n+h[k]]}if(E>F&&(x&g)!==y){for(0===R&&(R=F),_+=I,N=E-R,T=1<852||2===t&&L>592)return 1;y=x&g,u[y]=F<<24|N<<16|_-f|0}}return 0!==x&&(u[_+x]=E-R<<24|64<<16|0),p.bits=F,0}},function(t,e,n){"use strict";function r(t,e){if(e<65537&&(t.subarray&&s||!t.subarray&&o))return String.fromCharCode.apply(null,i.shrinkBuf(t,e));for(var n="",r=0;r=252?6:c>=248?5:c>=240?4:c>=224?3:c>=192?2:1;a[254]=a[254]=1,e.string2buf=function(t){var e,n,r,o,s,a=t.length,c=0;for(o=0;o>>6,e[s++]=128|63&n):n<65536?(e[s++]=224|n>>>12,e[s++]=128|n>>>6&63,e[s++]=128|63&n):(e[s++]=240|n>>>18,e[s++]=128|n>>>12&63,e[s++]=128|n>>>6&63,e[s++]=128|63&n);return e},e.buf2binstring=function(t){return r(t,t.length)},e.binstring2buf=function(t){for(var e=new i.Buf8(t.length),n=0,r=e.length;n4)u[i++]=65533,n+=s-1;else{for(o&=2===s?31:3===s?15:7;s>1&&n1?u[i++]=65533:o<65536?u[i++]=o:(o-=65536,u[i++]=55296|o>>10&1023,u[i++]=56320|1023&o)}return r(u,i)},e.utf8border=function(t,e){var n;for(e=e||t.length,e>t.length&&(e=t.length),n=e-1;n>=0&&128==(192&t[n]);)n--;return n<0?e:0===n?e:n+a[t[n]]>e?n:e}},function(t,e,n){"use strict";t.exports={Z_NO_FLUSH:0,Z_PARTIAL_FLUSH:1,Z_SYNC_FLUSH:2,Z_FULL_FLUSH:3,Z_FINISH:4,Z_BLOCK:5,Z_TREES:6,Z_OK:0,Z_STREAM_END:1,Z_NEED_DICT:2,Z_ERRNO:-1,Z_STREAM_ERROR:-2,Z_DATA_ERROR:-3,Z_BUF_ERROR:-5,Z_NO_COMPRESSION:0,Z_BEST_SPEED:1,Z_BEST_COMPRESSION:9,Z_DEFAULT_COMPRESSION:-1,Z_FILTERED:1,Z_HUFFMAN_ONLY:2,Z_RLE:3,Z_FIXED:4,Z_DEFAULT_STRATEGY:0,Z_BINARY:0,Z_TEXT:1,Z_UNKNOWN:2,Z_DEFLATED:8}},function(t,e,n){"use strict";t.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"}},function(t,e,n){"use strict";function r(){this.input=null,this.next_in=0,this.avail_in=0,this.total_in=0,this.output=null,this.next_out=0,this.avail_out=0,this.total_out=0,this.msg="",this.state=null,this.data_type=2,this.adler=0}t.exports=r},function(t,e,n){"use strict";function r(){this.text=0,this.time=0,this.xflags=0,this.os=0,this.extra=null,this.extra_len=0,this.name="",this.comment="",this.hcrc=0,this.done=!1}t.exports=r}])}); +//# sourceMappingURL=browserfs.min.js.map \ No newline at end of file diff --git a/public/wasm/pdfcpu-wrapper.js b/public/wasm/pdfcpu-wrapper.js new file mode 100644 index 00000000..8d53b095 --- /dev/null +++ b/public/wasm/pdfcpu-wrapper.js @@ -0,0 +1,94 @@ +// TODO: Uses the BrowserFS import, needs to be changed for serverside + +let wasmLocation = "/wasm/"; + +let fs; +let Buffer; + +configureFs(); +loadWasm(); + +function configureFs() { + BrowserFS.configure( + { + fs: "InMemory", + }, + function (e) { + if (e) { + // An error happened! + throw e; + } + fs = BrowserFS.BFSRequire("fs"); + Buffer = BrowserFS.BFSRequire("buffer").Buffer; + + // TODO: Find a way to remove these globals: + window.fs = fs; + window.Buffer = Buffer; + } + ); +} + +// TODO: This needs to be changed in order to run on node +function loadWasm() { + const script = document.createElement("script"); + script.src = wasmLocation + "/wasm_exec.js"; + script.async = true; + document.body.appendChild(script); +} + +const runWasm = async (param) => { + if (window.cachedWasmResponse === undefined) { + const response = await fetch(wasmLocation + "/pdfcpu.wasm"); + const buffer = await response.arrayBuffer(); + window.cachedWasmResponse = buffer; + window.go = new Go(); + } + const { instance } = await WebAssembly.instantiate( + window.cachedWasmResponse, + window.go.importObject + ); + window.go.argv = param; + await window.go.run(instance); + return window.go.exitCode; +}; + +async function loadFileAsync(data) { + console.log(`Writing file to MemoryFS`); + await fs.writeFile(`/input.pdf`, data); + let exitCode = await runWasm([ + "pdfcpu.wasm", + "validate", + "-c", + "disable", + `/input.pdf`, + ]); + + if (exitCode !== 0) + throw new Error("There was an error validating your PDFs"); +} + +export async function impose(snapshot, nup, format) { + await loadFileAsync(Buffer.from(snapshot)); + + let exitcode = await runWasm([ + "pdfcpu.wasm", + "nup", + "-c", + "disable", + 'f:' + format, + "output.pdf", + String(nup), + "input.pdf", + ]); + + if (exitcode !== 0) { + console.error("There was an error nuping your PDFs"); + return; + } + + await fs.unlink("input.pdf"); + const contents = fs.readFileSync("output.pdf"); + fs.unlink("output.pdf"); + console.log("Your File ist Ready!"); + return new Uint8Array(contents); +}; \ No newline at end of file diff --git a/public/wasm/pdfcpu.wasm b/public/wasm/pdfcpu.wasm new file mode 100644 index 00000000..fc7855d3 Binary files /dev/null and b/public/wasm/pdfcpu.wasm differ diff --git a/public/wasm/wasm_exec.js b/public/wasm/wasm_exec.js new file mode 100644 index 00000000..0c8a1044 --- /dev/null +++ b/public/wasm/wasm_exec.js @@ -0,0 +1,872 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. +(() => { + // Map multiple JavaScript environments to a single common API, + // preferring web standards over Node.js API. + // + // Environments considered: + // - Browsers + // - Node.js + // - Electron + // - Parcel + // - Webpack + + console.log("imported") + if (typeof global !== "undefined") { + // global already exists + } else if (typeof window !== "undefined") { + window.global = window; + } else if (typeof self !== "undefined") { + self.global = self; + } else { + throw new Error("cannot export Go (neither global, window nor self is defined)"); + } + + let logFS = false + var handler = { + get: function (target, property) { + if (property in target && target[property] instanceof Function) { + return function () { + if (logFS) { + console.log(property, 'called', arguments); + } + // 将callback替换 + if (arguments[arguments.length - 1] instanceof Function) { + var origCB = arguments[arguments.length - 1]; + var newCB = function () { + if (logFS) { + console.log('callback for', property, 'get called with args:', arguments); + } + return Reflect.apply(origCB, arguments.callee, arguments); + } + arguments[arguments.length - 1] = newCB; + } + return Reflect.apply(target[property], target, arguments); + } + } else { + return target[property] + } + } + } + + if (!global.require && typeof require !== "undefined") { + global.require = require; + } + + + if (!global.fs && global.require) { + + //const fs = require("fs"); + if (typeof fs === "object" && fs !== null && Object.keys(fs).length !== 0) { + global.fs = fs; + } + + } + + const enosys = () => { + const err = new Error("not implemented"); + err.code = "ENOSYS"; + return err; + }; + + if (!global.fs) { + let outputBuf = ""; + global.fs = { + constants: { + O_WRONLY: -1, + O_RDWR: -1, + O_CREAT: -1, + O_TRUNC: -1, + O_APPEND: -1, + O_EXCL: -1 + }, // unused + writeSync(fd, buf) { + outputBuf += decoder.decode(buf); + const nl = outputBuf.lastIndexOf("\n"); + if (nl != -1) { + console.log(outputBuf.substr(0, nl)); + outputBuf = outputBuf.substr(nl + 1); + } + return buf.length; + }, + write(fd, buf, offset, length, position, callback) { + if (offset !== 0 || length !== buf.length || position !== null) { + callback(enosys()); + return; + } + const n = this.writeSync(fd, buf); + callback(null, n); + }, + chmod(path, mode, callback) { + callback(enosys()); + }, + chown(path, uid, gid, callback) { + callback(enosys()); + }, + close(fd, callback) { + callback(enosys()); + }, + fchmod(fd, mode, callback) { + callback(enosys()); + }, + fchown(fd, uid, gid, callback) { + callback(enosys()); + }, + fstat(fd, callback) { + callback(enosys()); + }, + fsync(fd, callback) { + callback(null); + }, + ftruncate(fd, length, callback) { + callback(enosys()); + }, + lchown(path, uid, gid, callback) { + callback(enosys()); + }, + link(path, link, callback) { + callback(enosys()); + }, + lstat(path, callback) { + callback(enosys()); + }, + mkdir(path, perm, callback) { + callback(enosys()); + }, + open(path, flags, mode, callback) { + callback(enosys()); + }, + read(fd, buffer, offset, length, position, callback) { + callback(enosys()); + }, + readdir(path, callback) { + callback(enosys()); + }, + readlink(path, callback) { + callback(enosys()); + }, + rename(from, to, callback) { + callback(enosys()); + }, + rmdir(path, callback) { + callback(enosys()); + }, + stat(path, callback) { + callback(enosys()); + }, + symlink(path, link, callback) { + callback(enosys()); + }, + truncate(path, length, callback) { + callback(enosys()); + }, + unlink(path, callback) { + callback(enosys()); + }, + utimes(path, atime, mtime, callback) { + callback(enosys()); + }, + }; + } + + if (!global.process) { + global.process = { + getuid() { + return -1; + }, + getgid() { + return -1; + }, + geteuid() { + return -1; + }, + getegid() { + return -1; + }, + getgroups() { + throw enosys(); + }, + pid: -1, + ppid: -1, + umask() { + throw enosys(); + }, + cwd() { + throw enosys(); + }, + chdir() { + throw enosys(); + }, + } + } + + if (!global.crypto && global.require) { + const nodeCrypto = require("crypto"); + global.crypto = { + getRandomValues(b) { + nodeCrypto.randomFillSync(b); + }, + }; + } + if (!global.crypto) { + throw new Error("global.crypto is not available, polyfill required (getRandomValues only)"); + } + + if (!global.performance) { + global.performance = { + now() { + const [sec, nsec] = process.hrtime(); + return sec * 1000 + nsec / 1000000; + }, + }; + } + + if (!global.TextEncoder && global.require) { + global.TextEncoder = require("util").TextEncoder; + } + if (!global.TextEncoder) { + throw new Error("global.TextEncoder is not available, polyfill required"); + } + + if (!global.TextDecoder && global.require) { + global.TextDecoder = require("util").TextDecoder; + } + if (!global.TextDecoder) { + throw new Error("global.TextDecoder is not available, polyfill required"); + } + + + const isNodeJS = global.process && global.process.title === "node"; + + if (!isNodeJS) { + // console.log("ini browser fs") + // var myfs = global.BrowserFS.BFSRequire('fs'); + // global.Buffer = global.BrowserFS.BFSRequire('buffer').Buffer; + // global.fs = myfs; + + global.fs.constants = { + O_RDONLY: 0, + O_WRONLY: 1, + O_RDWR: 2, + O_CREAT: 64, + O_CREATE: 64, + O_EXCL: 128, + O_NOCTTY: 256, + O_TRUNC: 512, + O_APPEND: 1024, + O_DIRECTORY: 65536, + O_NOATIME: 262144, + O_NOFOLLOW: 131072, + O_SYNC: 1052672, + O_DIRECT: 16384, + O_NONBLOCK: 2048, + }; + + let outputBuf = ""; + + global.fs.writeSyncOriginal = global.fs.writeSync + global.fs.writeSync = function (fd, buf) { + if (fd === 1 || fd === 2) { + outputBuf += decoder.decode(buf); + const nl = outputBuf.lastIndexOf("\n"); + if (nl != -1) { + console.log(outputBuf.substr(0, nl)); + outputBuf = outputBuf.substr(nl + 1); + } + return buf.length; + } else { + return global.fs.writeSyncOriginal(...arguments); + } + }; + + global.fs.writeOriginal = global.fs.write + global.fs.write = function (fd, buf, offset, length, position, callback) { + // (corresponding to STDOUT/STDERR) + if (fd === 1 || fd === 2) { + if (offset !== 0 || length !== buf.length || position !== null) { + throw new Error("not implemented"); + } + const n = this.writeSync(fd, buf); + callback(null, n, buf); + } else { + // buf: read buf first + arguments[1] = global.Buffer.from(arguments[1]); + return global.fs.writeOriginal(...arguments); + } + }; + + + + global.fs.openOriginal = global.fs.open + global.fs.open = function (path, flags, mode, callback) { + var myflags = 'r'; + var O = global.fs.constants; + + // Convert numeric flags to string flags + // FIXME: maybe wrong... + console.log("open dir?", path, 'flag', flags, myflags) + if (flags & O.O_WRONLY) { // 'w' + myflags = 'w'; + if (flags & O.O_EXCL) { + myflags = 'wx'; + } + } else if (flags & O.O_RDWR) { // 'r+' or 'w+' + if (flags & O.O_CREAT && flags & O.O_TRUNC) { // w+ + if (flags & O.O_EXCL) { + myflags = 'wx+'; + } else { + myflags = 'w+'; + } + } else { // r+ + myflags = 'r+'; + } + } else if (flags & O.O_APPEND) { // 'a' + console.log("append error") + throw new Error("Not implmented"); + } else { + // 打开文件 + myflags = 'r+'; + console.log("open dir?", path, 'flag', flags, myflags) + } + + + return global.fs.openOriginal(path, myflags, mode, callback); + }; + + global.fs.fstatOriginal = global.fs.fstat; + global.fs.fstat = function (fd, callback) { + return global.fs.fstatOriginal(fd, function () { + var retStat = arguments[1]; + delete retStat['fileData']; + retStat.atimeMs = retStat.atime.getTime(); + retStat.mtimeMs = retStat.mtime.getTime(); + retStat.ctimeMs = retStat.ctime.getTime(); + retStat.birthtimeMs = retStat.birthtime.getTime(); + return callback(arguments[0], retStat); + + }); + }; + + + + global.fs.closeOriginal = global.fs.close; + global.fs.close = function (fd, callback) { + return global.fs.closeOriginal(fd, function () { + if (typeof arguments[0] === 'undefined') arguments[0] = null; + return callback(...arguments); + }); + } + + // global.fs.renameOriginal = global.fs.rename + // global.fs.rename = function (from, to, callback) { + // console.log("rename a0", arguments[0]) + // global.fs.renameOriginal(from, to); + // callback(arguments[0]) + // } + + // global.fs.renameSyncOriginal = global.fs.renameSync + // global.fs.renameSync = function(fd, options) { + // console.log("Sync") + // } + + + global.fs = new Proxy(global.fs, handler); + } + + // End of polyfills for common API. + + const encoder = new TextEncoder("utf-8"); + const decoder = new TextDecoder("utf-8"); + + global.Go = class { + constructor() { + this.argv = ["js"]; + this.env = {}; + this.exit = (code) => { + this.exitCode = code; + if (code !== 0) { + console.warn("exit code:", code); + } + }; + this._exitPromise = new Promise((resolve) => { + this._resolveExitPromise = resolve; + }); + this._pendingEvent = null; + this._scheduledTimeouts = new Map(); + this._nextCallbackTimeoutID = 1; + + const setInt64 = (addr, v) => { + this.mem.setUint32(addr + 0, v, true); + this.mem.setUint32(addr + 4, Math.floor(v / 4294967296), true); + } + + const getInt64 = (addr) => { + const low = this.mem.getUint32(addr + 0, true); + const high = this.mem.getInt32(addr + 4, true); + return low + high * 4294967296; + } + + const loadValue = (addr) => { + const f = this.mem.getFloat64(addr, true); + if (f === 0) { + return undefined; + } + if (!isNaN(f)) { + return f; + } + + const id = this.mem.getUint32(addr, true); + return this._values[id]; + } + + const storeValue = (addr, v) => { + const nanHead = 0x7FF80000; + + if (typeof v === "number" && v !== 0) { + if (isNaN(v)) { + this.mem.setUint32(addr + 4, nanHead, true); + this.mem.setUint32(addr, 0, true); + return; + } + this.mem.setFloat64(addr, v, true); + return; + } + + if (v === undefined) { + this.mem.setFloat64(addr, 0, true); + return; + } + + let id = this._ids.get(v); + if (id === undefined) { + id = this._idPool.pop(); + if (id === undefined) { + id = this._values.length; + } + this._values[id] = v; + this._goRefCounts[id] = 0; + this._ids.set(v, id); + } + this._goRefCounts[id]++; + let typeFlag = 0; + switch (typeof v) { + case "object": + if (v !== null) { + typeFlag = 1; + } + break; + case "string": + typeFlag = 2; + break; + case "symbol": + typeFlag = 3; + break; + case "function": + typeFlag = 4; + break; + } + this.mem.setUint32(addr + 4, nanHead | typeFlag, true); + this.mem.setUint32(addr, id, true); + } + + const loadSlice = (addr) => { + const array = getInt64(addr + 0); + const len = getInt64(addr + 8); + return new Uint8Array(this._inst.exports.mem.buffer, array, len); + } + + const loadSliceOfValues = (addr) => { + const array = getInt64(addr + 0); + const len = getInt64(addr + 8); + const a = new Array(len); + for (let i = 0; i < len; i++) { + a[i] = loadValue(array + i * 8); + } + return a; + } + + const loadString = (addr) => { + const saddr = getInt64(addr + 0); + const len = getInt64(addr + 8); + return decoder.decode(new DataView(this._inst.exports.mem.buffer, saddr, len)); + } + + const timeOrigin = Date.now() - performance.now(); + this.importObject = { + go: { + // Go's SP does not change as long as no Go code is running. Some operations (e.g. calls, getters and setters) + // may synchronously trigger a Go event handler. This makes Go code get executed in the middle of the imported + // function. A goroutine can switch to a new stack if the current stack is too small (see morestack function). + // This changes the SP, thus we have to update the SP used by the imported function. + + // func wasmExit(code int32) + "runtime.wasmExit": (sp) => { + sp >>>= 0; + const code = this.mem.getInt32(sp + 8, true); + this.exited = true; + delete this._inst; + delete this._values; + delete this._goRefCounts; + delete this._ids; + delete this._idPool; + this.exit(code); + }, + + // func wasmWrite(fd uintptr, p unsafe.Pointer, n int32) + "runtime.wasmWrite": (sp) => { + sp >>>= 0; + const fd = getInt64(sp + 8); + const p = getInt64(sp + 16); + const n = this.mem.getInt32(sp + 24, true); + fs.writeSync(fd, new Uint8Array(this._inst.exports.mem.buffer, p, n)); + }, + + // func resetMemoryDataView() + "runtime.resetMemoryDataView": (sp) => { + sp >>>= 0; + this.mem = new DataView(this._inst.exports.mem.buffer); + }, + + // func nanotime1() int64 + "runtime.nanotime1": (sp) => { + sp >>>= 0; + setInt64(sp + 8, (timeOrigin + performance.now()) * 1000000); + }, + + // func walltime1() (sec int64, nsec int32) + "runtime.walltime1": (sp) => { + sp >>>= 0; + const msec = (new Date).getTime(); + setInt64(sp + 8, msec / 1000); + this.mem.setInt32(sp + 16, (msec % 1000) * 1000000, true); + }, + + // func scheduleTimeoutEvent(delay int64) int32 + "runtime.scheduleTimeoutEvent": (sp) => { + sp >>>= 0; + const id = this._nextCallbackTimeoutID; + this._nextCallbackTimeoutID++; + this._scheduledTimeouts.set(id, setTimeout( + () => { + this._resume(); + while (this._scheduledTimeouts.has(id)) { + // for some reason Go failed to register the timeout event, log and try again + // (temporary workaround for https://github.com/golang/go/issues/28975) + console.warn("scheduleTimeoutEvent: missed timeout event"); + this._resume(); + } + }, + getInt64(sp + 8) + 1, // setTimeout has been seen to fire up to 1 millisecond early + )); + this.mem.setInt32(sp + 16, id, true); + }, + + // func clearTimeoutEvent(id int32) + "runtime.clearTimeoutEvent": (sp) => { + sp >>>= 0; + const id = this.mem.getInt32(sp + 8, true); + clearTimeout(this._scheduledTimeouts.get(id)); + this._scheduledTimeouts.delete(id); + }, + + // func getRandomData(r []byte) + "runtime.getRandomData": (sp) => { + sp >>>= 0; + crypto.getRandomValues(loadSlice(sp + 8)); + }, + + // func finalizeRef(v ref) + "syscall/js.finalizeRef": (sp) => { + sp >>>= 0; + const id = this.mem.getUint32(sp + 8, true); + this._goRefCounts[id]--; + if (this._goRefCounts[id] === 0) { + const v = this._values[id]; + this._values[id] = null; + this._ids.delete(v); + this._idPool.push(id); + } + }, + + // func stringVal(value string) ref + "syscall/js.stringVal": (sp) => { + sp >>>= 0; + storeValue(sp + 24, loadString(sp + 8)); + }, + + // func valueGet(v ref, p string) ref + "syscall/js.valueGet": (sp) => { + sp >>>= 0; + const result = Reflect.get(loadValue(sp + 8), loadString(sp + 16)); + sp = this._inst.exports.getsp() >>> 0; // see comment above + storeValue(sp + 32, result); + }, + + // func valueSet(v ref, p string, x ref) + "syscall/js.valueSet": (sp) => { + sp >>>= 0; + Reflect.set(loadValue(sp + 8), loadString(sp + 16), loadValue(sp + 32)); + }, + + // func valueDelete(v ref, p string) + "syscall/js.valueDelete": (sp) => { + sp >>>= 0; + Reflect.deleteProperty(loadValue(sp + 8), loadString(sp + 16)); + }, + + // func valueIndex(v ref, i int) ref + "syscall/js.valueIndex": (sp) => { + sp >>>= 0; + storeValue(sp + 24, Reflect.get(loadValue(sp + 8), getInt64(sp + 16))); + }, + + // valueSetIndex(v ref, i int, x ref) + "syscall/js.valueSetIndex": (sp) => { + sp >>>= 0; + Reflect.set(loadValue(sp + 8), getInt64(sp + 16), loadValue(sp + 24)); + }, + + // func valueCall(v ref, m string, args []ref) (ref, bool) + "syscall/js.valueCall": (sp) => { + sp >>>= 0; + try { + const v = loadValue(sp + 8); + const m = Reflect.get(v, loadString(sp + 16)); + const args = loadSliceOfValues(sp + 32); + const result = Reflect.apply(m, v, args); + sp = this._inst.exports.getsp() >>> 0; // see comment above + storeValue(sp + 56, result); + this.mem.setUint8(sp + 64, 1); + } catch (err) { + storeValue(sp + 56, err); + this.mem.setUint8(sp + 64, 0); + } + }, + + // func valueInvoke(v ref, args []ref) (ref, bool) + "syscall/js.valueInvoke": (sp) => { + sp >>>= 0; + try { + const v = loadValue(sp + 8); + const args = loadSliceOfValues(sp + 16); + const result = Reflect.apply(v, undefined, args); + sp = this._inst.exports.getsp() >>> 0; // see comment above + storeValue(sp + 40, result); + this.mem.setUint8(sp + 48, 1); + } catch (err) { + storeValue(sp + 40, err); + this.mem.setUint8(sp + 48, 0); + } + }, + + // func valueNew(v ref, args []ref) (ref, bool) + "syscall/js.valueNew": (sp) => { + sp >>>= 0; + try { + const v = loadValue(sp + 8); + const args = loadSliceOfValues(sp + 16); + const result = Reflect.construct(v, args); + sp = this._inst.exports.getsp() >>> 0; // see comment above + storeValue(sp + 40, result); + this.mem.setUint8(sp + 48, 1); + } catch (err) { + storeValue(sp + 40, err); + this.mem.setUint8(sp + 48, 0); + } + }, + + // func valueLength(v ref) int + "syscall/js.valueLength": (sp) => { + sp >>>= 0; + setInt64(sp + 16, parseInt(loadValue(sp + 8).length)); + }, + + // valuePrepareString(v ref) (ref, int) + "syscall/js.valuePrepareString": (sp) => { + sp >>>= 0; + const str = encoder.encode(String(loadValue(sp + 8))); + storeValue(sp + 16, str); + setInt64(sp + 24, str.length); + }, + + // valueLoadString(v ref, b []byte) + "syscall/js.valueLoadString": (sp) => { + sp >>>= 0; + const str = loadValue(sp + 8); + loadSlice(sp + 16).set(str); + }, + + // func valueInstanceOf(v ref, t ref) bool + "syscall/js.valueInstanceOf": (sp) => { + sp >>>= 0; + this.mem.setUint8(sp + 24, (loadValue(sp + 8) instanceof loadValue(sp + 16)) ? 1 : 0); + }, + + // func copyBytesToGo(dst []byte, src ref) (int, bool) + "syscall/js.copyBytesToGo": (sp) => { + sp >>>= 0; + const dst = loadSlice(sp + 8); + const src = loadValue(sp + 32); + if (!(src instanceof Uint8Array || src instanceof Uint8ClampedArray)) { + this.mem.setUint8(sp + 48, 0); + return; + } + const toCopy = src.subarray(0, dst.length); + dst.set(toCopy); + setInt64(sp + 40, toCopy.length); + this.mem.setUint8(sp + 48, 1); + }, + + // func copyBytesToJS(dst ref, src []byte) (int, bool) + "syscall/js.copyBytesToJS": (sp) => { + sp >>>= 0; + const dst = loadValue(sp + 8); + const src = loadSlice(sp + 16); + if (!(dst instanceof Uint8Array || dst instanceof Uint8ClampedArray)) { + this.mem.setUint8(sp + 48, 0); + return; + } + const toCopy = src.subarray(0, dst.length); + dst.set(toCopy); + setInt64(sp + 40, toCopy.length); + this.mem.setUint8(sp + 48, 1); + }, + + "debug": (value) => { + console.log(value); + }, + } + }; + } + + async run(instance) { + if (!(instance instanceof WebAssembly.Instance)) { + throw new Error("Go.run: WebAssembly.Instance expected"); + } + this._inst = instance; + this.mem = new DataView(this._inst.exports.mem.buffer); + this._values = [ // JS values that Go currently has references to, indexed by reference id + NaN, + 0, + null, + true, + false, + global, + this, + ]; + this._goRefCounts = new Array(this._values.length).fill(Infinity); // number of references that Go has to a JS value, indexed by reference id + this._ids = new Map([ // mapping from JS values to reference ids + [0, 1], + [null, 2], + [true, 3], + [false, 4], + [global, 5], + [this, 6], + ]); + this._idPool = []; // unused ids that have been garbage collected + this.exited = false; // whether the Go program has exited + + // Pass command line arguments and environment variables to WebAssembly by writing them to the linear memory. + let offset = 4096; + + const strPtr = (str) => { + const ptr = offset; + const bytes = encoder.encode(str + "\0"); + new Uint8Array(this.mem.buffer, offset, bytes.length).set(bytes); + offset += bytes.length; + if (offset % 8 !== 0) { + offset += 8 - (offset % 8); + } + return ptr; + }; + + const argc = this.argv.length; + + const argvPtrs = []; + this.argv.forEach((arg) => { + argvPtrs.push(strPtr(arg)); + }); + argvPtrs.push(0); + + const keys = Object.keys(this.env).sort(); + keys.forEach((key) => { + argvPtrs.push(strPtr(`${key}=${this.env[key]}`)); + }); + argvPtrs.push(0); + + const argv = offset; + argvPtrs.forEach((ptr) => { + this.mem.setUint32(offset, ptr, true); + this.mem.setUint32(offset + 4, 0, true); + offset += 8; + }); + + this._inst.exports.run(argc, argv); + if (this.exited) { + this._resolveExitPromise(); + } + await this._exitPromise; + } + + _resume() { + if (this.exited) { + throw new Error("Go program has already exited"); + } + this._inst.exports.resume(); + if (this.exited) { + this._resolveExitPromise(); + } + } + + _makeFuncWrapper(id) { + const go = this; + return function () { + const event = { + id: id, + this: this, + args: arguments + }; + go._pendingEvent = event; + go._resume(); + return event.result; + }; + } + } + + if ( + typeof module !== "undefined" && + global.require && + global.require.main === module && + global.process && + global.process.versions && + !global.process.versions.electron + ) { + if (process.argv.length < 3) { + console.error("usage: go_js_wasm_exec [wasm binary] [arguments]"); + process.exit(1); + } + + const go = new Go(); + go.argv = process.argv.slice(2); + go.env = Object.assign({ + TMPDIR: require("os").tmpdir() + }, process.env); + go.exit = process.exit; + WebAssembly.instantiate(fs.readFileSync(process.argv[2]), go.importObject).then((result) => { + process.on("exit", (code) => { // Node.js exits if no event handler is pending + if (code === 0 && !go.exited) { + // deadlock, make Go print error and stack traces + go._pendingEvent = { + id: 0 + }; + go._resume(); + } + }); + return go.run(result.instance); + }).catch((err) => { + console.error(err); + process.exit(1); + }); + } +})(); \ No newline at end of file