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1,getStream:function(r){return ro.streams[r]},createStream:function(r,e,t){ro.FSStream||(ro.FSStream=function(){},ro.FSStream.prototype={object:{get:function(){return this.node},set:function(r){this.node=r}},isRead:{get:function(){return(2097155&this.flags)!=1}},isWrite:{get:function(){return(2097155&this.flags)!=0}},isAppend:{get:function(){return 1024&this.flags}}});var n=new ro.FSStream;for(var o in r)n[o]=r[o];r=n;var i=ro.nextfd(e,t);return r.fd=i,ro.streams[i]=r,r},closeStream:function(r){ro.streams[r]=null},chrdev_stream_ops:{open:function(r){var e=ro.getDevice(r.node.rdev);r.stream_ops=e.stream_ops,r.stream_ops.open&&r.stream_ops.open(r)},llseek:function(){throw new ro.ErrnoError(70)}},major:function(r){return r>>8},minor:function(r){return 255&r},makedev:function(r,e){return r<<8|e},registerDevice:function(r,e){ro.devices[r]={stream_ops:e}},getDevice:function(r){return ro.devices[r]},getMounts:function(r){for(var e=[],t=[r];t.length;){var n=t.pop();e.push(n),t.push.apply(t,n.mounts)}return e},syncfs:function(r,e){"function"==typeof r&&(e=r,r=!1),ro.syncFSRequests++,ro.syncFSRequests>1&&R("warning: "+ro.syncFSRequests+" FS.syncfs operations in flight at once, probably just doing extra work");var t=ro.getMounts(ro.root.mount),n=0;function doCallback(r){return ro.syncFSRequests--,e(r)}function done(r){if(r)return done.errored?void 0:(done.errored=!0,doCallback(r));++n>=t.length&&doCallback(null)}t.forEach(function(e){if(!e.type.syncfs)return done(null);e.type.syncfs(e,r,done)})},mount:function(r,e,t){var n,o="/"===t,i=!t;if(o&&ro.root)throw new ro.ErrnoError(10);if(!o&&!i){var a=ro.lookupPath(t,{follow_mount:!1});if(t=a.path,n=a.node,ro.isMountpoint(n))throw new ro.ErrnoError(10);if(!ro.isDir(n.mode))throw new ro.ErrnoError(54)}var u={type:r,opts:e,mountpoint:t,mounts:[]},s=r.mount(u);return s.mount=u,u.root=s,o?ro.root=s:n&&(n.mounted=u,n.mount&&n.mount.mounts.push(u)),s},unmount:function(r){var e=ro.lookupPath(r,{follow_mount:!1});if(!ro.isMountpoint(e.node))throw new ro.ErrnoError(28);var t=e.node,n=t.mounted,o=ro.getMounts(n);Object.keys(ro.nameTable).forEach(function(r){for(var e=ro.nameTable[r];e;){var t=e.name_next;o.includes(e.mount)&&ro.destroyNode(e),e=t}}),t.mounted=null;var i=t.mount.mounts.indexOf(n);t.mount.mounts.splice(i,1)},lookup:function(r,e){return r.node_ops.lookup(r,e)},mknod:function(r,e,t){var n=ro.lookupPath(r,{parent:!0}).node,o=rr.basename(r);if(!o||"."===o||".."===o)throw new ro.ErrnoError(28);var i=ro.mayCreate(n,o);if(i)throw new ro.ErrnoError(i);if(!n.node_ops.mknod)throw new ro.ErrnoError(63);return n.node_ops.mknod(n,o,e,t)},create:function(r,e){return e=(void 0!==e?e:438)&4095|32768,ro.mknod(r,e,0)},mkdir:function(r,e){return e=(void 0!==e?e:511)&1023|16384,ro.mknod(r,e,0)},mkdirTree:function(r,e){for(var t=r.split("/"),n="",o=0;o<t.length;++o)if(t[o]){n+="/"+t[o];try{ro.mkdir(n,e)}catch(r){if(20!=r.errno)throw r}}},mkdev:function(r,e,t){return void 0===t&&(t=e,e=438),e|=8192,ro.mknod(r,e,t)},symlink:function(r,e){if(!re.resolve(r))throw new ro.ErrnoError(44);var t=ro.lookupPath(e,{parent:!0}).node;if(!t)throw new ro.ErrnoError(44);var n=rr.basename(e),o=ro.mayCreate(t,n);if(o)throw new ro.ErrnoError(o);if(!t.node_ops.symlink)throw new ro.ErrnoError(63);return t.node_ops.symlink(t,n,r)},rename:function(r,e){var t,n,o,i=rr.dirname(r),a=rr.dirname(e),u=rr.basename(r),s=rr.basename(e);if(t=ro.lookupPath(r,{parent:!0}).node,n=ro.lookupPath(e,{parent:!0}).node,!t||!n)throw new ro.ErrnoError(44);if(t.mount!==n.mount)throw new ro.ErrnoError(75);var c=ro.lookupNode(t,u),f=re.relative(r,a);if("."!==f.charAt(0))throw new ro.ErrnoError(28);if("."!==(f=re.relative(e,i)).charAt(0))throw new ro.ErrnoError(55);try{o=ro.lookupNode(n,s)}catch(r){}if(c!==o){var l=ro.isDir(c.mode),d=ro.mayDelete(t,u,l);if(d||(d=o?ro.mayDelete(n,s,l):ro.mayCreate(n,s)))throw new ro.ErrnoError(d);if(!t.node_ops.rename)throw new ro.ErrnoError(63);if(ro.isMountpoint(c)||o&&ro.isMountpoint(o))throw new ro.ErrnoError(10);if(n!==t&&(d=ro.nodePermissions(t,"w")))throw new ro.ErrnoError(d);ro.hashRemoveNode(c);try{t.node_ops.rename(c,n,s)}catch(r){throw r}finally{ro.hashAddNode(c)}}},rmdir:function(r){var e=ro.lookupPath(r,{parent:!0}).node,t=rr.basename(r),n=ro.lookupNode(e,t),o=ro.mayDelete(e,t,!0);if(o)throw new ro.ErrnoError(o);if(!e.node_ops.rmdir)throw new ro.ErrnoError(63);if(ro.isMountpoint(n))throw new ro.ErrnoError(10);e.node_ops.rmdir(e,t),ro.destroyNode(n)},readdir:function(r){var e=ro.lookupPath(r,{follow:!0}).node;if(!e.node_ops.readdir)throw new ro.ErrnoError(54);
1return e.node_ops.readdir(e)},unlink:function(r){var e=ro.lookupPath(r,{parent:!0}).node,t=rr.basename(r),n=ro.lookupNode(e,t),o=ro.mayDelete(e,t,!1);if(o)throw new ro.ErrnoError(o);if(!e.node_ops.unlink)throw new ro.ErrnoError(63);if(ro.isMountpoint(n))throw new ro.ErrnoError(10);e.node_ops.unlink(e,t),ro.destroyNode(n)},readlink:function(r){var e=ro.lookupPath(r).node;if(!e)throw new ro.ErrnoError(44);if(!e.node_ops.readlink)throw new ro.ErrnoError(28);return re.resolve(ro.getPath(e.parent),e.node_ops.readlink(e))},stat:function(r,e){var t=ro.lookupPath(r,{follow:!e}).node;if(!t)throw new ro.ErrnoError(44);if(!t.node_ops.getattr)throw new ro.ErrnoError(63);return t.node_ops.getattr(t)},lstat:function(r){return ro.stat(r,!0)},chmod:function(r,e,t){var n;if(!(n="string"==typeof r?ro.lookupPath(r,{follow:!t}).node:r).node_ops.setattr)throw new ro.ErrnoError(63);n.node_ops.setattr(n,{mode:4095&e|-4096&n.mode,timestamp:Date.now()})},lchmod:function(r,e){ro.chmod(r,e,!0)},fchmod:function(r,e){var t=ro.getStream(r);if(!t)throw new ro.ErrnoError(8);ro.chmod(t.node,e)},chown:function(r,e,t,n){var o;if(!(o="string"==typeof r?ro.lookupPath(r,{follow:!n}).node:r).node_ops.setattr)throw new ro.ErrnoError(63);o.node_ops.setattr(o,{timestamp:Date.now()})},lchown:function(r,e,t){ro.chown(r,e,t,!0)},fchown:function(r,e,t){var n=ro.getStream(r);if(!n)throw new ro.ErrnoError(8);ro.chown(n.node,e,t)},truncate:function(r,e){if(e<0)throw new ro.ErrnoError(28);if("string"==typeof r){var t;t=ro.lookupPath(r,{follow:!0}).node}else t=r;if(!t.node_ops.setattr)throw new ro.ErrnoError(63);if(ro.isDir(t.mode))throw new ro.ErrnoError(31);if(!ro.isFile(t.mode))throw new ro.ErrnoError(28);var n=ro.nodePermissions(t,"w");if(n)throw new ro.ErrnoError(n);t.node_ops.setattr(t,{size:e,timestamp:Date.now()})},ftruncate:function(r,e){var t=ro.getStream(r);if(!t)throw new ro.ErrnoError(8);if((2097155&t.flags)==0)throw new ro.ErrnoError(28);ro.truncate(t.node,e)},utime:function(r,e,t){var n=ro.lookupPath(r,{follow:!0}).node;n.node_ops.setattr(n,{timestamp:Math.max(e,t)})},open:function(e,t,n,o,i){if(""===e)throw new ro.ErrnoError(44);if(t="string"==typeof t?ro.modeStringToFlags(t):t,n=void 0===n?438:n,n=64&t?4095&n|32768:0,"object"==typeof e)a=e;else{e=rr.normalize(e);try{var a;a=ro.lookupPath(e,{follow:!(131072&t)}).node}catch(r){}}var u=!1;if(64&t){if(a){if(128&t)throw new ro.ErrnoError(20)}else a=ro.mknod(e,n,0),u=!0}if(!a)throw new ro.ErrnoError(44);if(ro.isChrdev(a.mode)&&(t&=-513),65536&t&&!ro.isDir(a.mode))throw new ro.ErrnoError(54);if(!u){var s=ro.mayOpen(a,t);if(s)throw new ro.ErrnoError(s)}512&t&&ro.truncate(a,0),t&=-131713;var c=ro.createStream({node:a,path:ro.getPath(a),id:a.id,flags:t,mode:a.mode,seekable:!0,position:0,stream_ops:a.stream_ops,node_ops:a.node_ops,ungotten:[],error:!1},o,i);return c.stream_ops.open&&c.stream_ops.open(c),!r.logReadFiles||1&t||(ro.readFiles||(ro.readFiles={}),e in ro.readFiles||(ro.readFiles[e]=1)),c},close:function(r){if(ro.isClosed(r))throw new ro.ErrnoError(8);r.getdents&&(r.getdents=null);try{r.stream_ops.close&&r.stream_ops.close(r)}catch(r){throw r}finally{ro.closeStream(r.fd)}r.fd=null},isClosed:function(r){return null===r.fd},llseek:function(r,e,t){if(ro.isClosed(r))throw new ro.ErrnoError(8);if(!r.seekable||!r.stream_ops.llseek)throw new ro.ErrnoError(70);if(0!=t&&1!=t&&2!=t)throw new ro.ErrnoError(28);return r.position=r.stream_ops.llseek(r,e,t),r.ungotten=[],r.position},read:function(r,e,t,n,o){if(n<0||o<0)throw new ro.ErrnoError(28);if(ro.isClosed(r)||(2097155&r.flags)==1)throw new ro.ErrnoError(8);if(ro.isDir(r.node.mode))throw new ro.ErrnoError(31);if(!r.stream_ops.read)throw new ro.ErrnoError(28);var i=void 0!==o;if(i){if(!r.seekable)throw new ro.ErrnoError(70)}else o=r.position;var a=r.stream_ops.read(r,e,t,n,o);return 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r.stream_ops.mmap(r,e,t,n,o,i)},msync:function(r,e,t,n,o){return r&&r.stream_ops.msync?r.stream_ops.msync(r,e,t,n,o):0},munmap:function(r){return 0},ioctl:function(r,e,t){if(!r.stream_ops.ioctl)throw new ro.ErrnoError(59);return r.stream_ops.ioctl(r,e,t)},readFile:function(r,e){if((e=e||{}).flags=e.flags||0,e.encoding=e.encoding||"binary","utf8"!==e.encoding&&"binary"!==e.encoding)throw Error('Invalid encoding type "'+e.encoding+'"');var t,n=ro.open(r,e.flags),o=ro.stat(r).size,i=new Uint8Array(o);return ro.read(n,i,0,o,0),"utf8"===e.encoding?t=UTF8ArrayToString(i,0):"binary"===e.encoding&&(t=i),ro.close(n),t},writeFile:function(r,e,t){(t=t||{}).flags=t.flags||577;var n=ro.open(r,t.flags,t.mode);if("string"==typeof e){var o=new Uint8Array(lengthBytesUTF8(e)+1),i=stringToUTF8Array(e,o,0,o.length);ro.write(n,o,0,i,void 0,t.canOwn)}else if(ArrayBuffer.isView(e))ro.write(n,e,0,e.byteLength,void 0,t.canOwn);else throw Error("Unsupported data type");ro.close(n)}
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