forked from sheetjs/sheetjs
52 lines
2.0 KiB
JavaScript
52 lines
2.0 KiB
JavaScript
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#!/usr/bin/env node
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/* xlsx.js (C) 2013-present SheetJS -- http://sheetjs.com */
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const puppeteer = require("puppeteer");
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const path = require("path");
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const fs = require("fs");
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/* inf is the path to the html file -> url is a file URL */
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let inf = process.argv[2] || "test.html";
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let htmlpath = path.join(__dirname, inf);
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if(!fs.existsSync(htmlpath)) htmlpath = path.join(process.cwd(), inf);
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if(!fs.existsSync(htmlpath)) htmlpath = path.resolve(inf);
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if(!fs.existsSync(htmlpath)) { console.error(`Could not find a valid file for \`${inf}\``); process.exit(4); }
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console.error(`Reading from ${htmlpath}`);
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const url = `file://${htmlpath}`;
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/* get the standalone build source (e.g. node_modules/xlsx/dist/xlsx.full.min.js) */
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// const websrc = fs.readFileSync(require.resolve("xlsx/dist/xlsx.full.min.js"), "utf8");
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const get_lib = (jspath) => fs.readFileSync(path.resolve(__dirname, jspath)).toString();
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const websrc = get_lib("xlsx.full.min.js");
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(async() => {
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/* start browser and go to web page */
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const browser = await puppeteer.launch();
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const page = await browser.newPage();
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page.on("console", msg => console.log("PAGE LOG:", msg.text()));
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await page.setViewport({width: 1920, height: 1080});
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await page.goto(url, {waitUntil: "networkidle2"});
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/* inject library */
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await page.addScriptTag({content: websrc});
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/* this function `s5s` will be called by the script below, receiving the Base64-encoded file */
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await page.exposeFunction("s5s", async(b64) => {
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fs.writeFileSync("output.xlsb", b64, {encoding: "base64"});
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});
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/* generate XLSB file in webpage context and send back a Base64-encoded string */
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await page.addScriptTag({content: `
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/* call table_to_book on first table */
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var wb = XLSX.utils.table_to_book(document.getElementsByTagName("TABLE")[0]);
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/* generate XLSB file */
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var b64 = XLSX.write(wb, {type: "base64", bookType: "xlsb"});
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/* call "s5s" hook exposed from the node process */
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window.s5s(b64);
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`});
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/* cleanup */
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await browser.close();
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})();
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