calebboyd
55 lines
1.4 KiB
TypeScript
55 lines
1.4 KiB
TypeScript
const fs = require('fs'),
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fd = fs.openSync(process.execPath, 'r'),
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stat = fs.statSync(process.execPath),
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footer = Buffer.alloc(32, 0)
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fs.readSync(fd, footer, 0, 32, stat.size - 32)
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if (!footer.slice(0, 16).equals(Buffer.from('<nexe~~sentinel>'))) {
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throw 'Invalid Nexe binary'
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}
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const contentSize = footer.readDoubleLE(16),
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resourceSize = footer.readDoubleLE(24),
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contentStart = stat.size - 32 - resourceSize - contentSize,
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resourceStart = contentStart + contentSize
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Object.defineProperty(
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process,
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'__nexe',
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(function() {
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let nexeHeader: any = null
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return {
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get: function() {
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return nexeHeader
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},
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set: function(value: any) {
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if (nexeHeader) {
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throw new Error('This property is readonly')
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}
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nexeHeader = Object.assign({}, value, {
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blobPath: process.execPath,
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layout: {
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stat,
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contentSize,
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contentStart,
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resourceSize,
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resourceStart
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}
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})
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Object.freeze(nexeHeader)
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},
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enumerable: false,
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configurable: false
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}
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})()
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)
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const contentBuffer = Buffer.from(Array(contentSize)),
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Module = require('module')
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fs.readSync(fd, contentBuffer, 0, contentSize, contentStart)
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fs.closeSync(fd)
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new Module(process.execPath, null)._compile(contentBuffer.toString(), process.execPath)
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