├── .gitignore ├── .nowignore ├── LICENSE ├── README.md ├── api ├── data │ └── index.js ├── server.js └── upload │ └── index.js ├── now.json ├── package-lock.json ├── package.json ├── public └── index.html └── src └── util.js /.gitignore: -------------------------------------------------------------------------------- 1 | .now 2 | node_modules 3 | 4 | # Environment Variables 5 | .env 6 | .env.build 7 | .vercel -------------------------------------------------------------------------------- /.nowignore: -------------------------------------------------------------------------------- 1 | README.md 2 | yarn.lock -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright {yyyy} {name of copyright owner} 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # sheetaki 2 | 3 | Spreadsheet CSV conversion function. Deployed on 4 | 5 | Examples: 6 | 7 | - [https://obamawhitehouse.archives.gov/sites/default/files/omb/budget/fy2014/assets/receipts.xls](https://sheetaki.now.sh/api/data/?url=https://obamawhitehouse.archives.gov/sites/default/files/omb/budget/fy2014/assets/receipts.xls) 8 | 9 | -------------------------------------------------------------------------------- /api/data/index.js: -------------------------------------------------------------------------------- 1 | const URL = require('url'); 2 | const do_wb = require('../../src/util'); 3 | const request = require('request'); 4 | 5 | module.exports = function (req, res) { 6 | res.setHeader('Access-Control-Allow-Origin', '*'); 7 | const url = URL.parse(req.url, true); 8 | 9 | /* request url and process */ 10 | if (!url.query.url) return res.status(400).send("Must specify url"); 11 | request(url.query.url, { encoding: null }, function (err, response, body) { 12 | if (err) return res.status(502).send(err.toString()); 13 | 14 | /* response.statusCode is expected to be 200 */ 15 | switch (response.statusCode) { 16 | case 200: break; 17 | case 404: return res.status(404).send(`Cannot find ${url.query.url}`); 18 | default: return res.status(500).send(`Unrecognized status code ${response.statusCode}`); 19 | } 20 | 21 | do_wb(req, body, url, res); 22 | }); 23 | }; -------------------------------------------------------------------------------- /api/server.js: -------------------------------------------------------------------------------- 1 | const express = require('express'); 2 | const app = express(); 3 | const data = require('./data/index'); 4 | const upload = require('./upload/index'); 5 | const bodyParser = require('body-parser'); 6 | const port = 3000; 7 | 8 | app.use(bodyParser.urlencoded({ extended: true })); 9 | app.use(bodyParser.json()); 10 | 11 | app.use(express.static('public')); 12 | 13 | app.use('/api/data', data); 14 | app.use('/api/upload', upload); 15 | 16 | app.listen(port, () => { 17 | console.log(`Listening on port: ${port}`); 18 | }); -------------------------------------------------------------------------------- /api/upload/index.js: -------------------------------------------------------------------------------- 1 | const URL = require('url'), fs = require('fs'); 2 | const do_wb = require('../../src/util'); 3 | const formidable = require('formidable-serverless'); 4 | 5 | module.exports = function(req, res) { 6 | res.setHeader('Access-Control-Allow-Origin', '*'); 7 | const url = URL.parse(req.url, true); 8 | 9 | /* parse form data */ 10 | const form = formidable({multiples: true, maxFileSize: 2*1024*1024}); 11 | form.parse(req, (err, fields, files) => { 12 | if(err) return res.status(400).send(err.message || err); 13 | if(!url.query) url.query = fields; 14 | ["N", "t"].forEach(k => { if(!url.query[k] && fields[k] != null) url.query[k] = fields[k]; }); 15 | 16 | /* look for first uploaded file entry */ 17 | if(!files) return res.status(400).send("Missing file"); 18 | const fentries = Object.entries(files); 19 | if(fentries.length == 0) return res.status(400).send("Missing file"); 20 | 21 | /* read file */ 22 | const file = fentries[0][1]; 23 | fs.readFile(file.path, (err, body) => { 24 | if(err) return res.status(500).send(err.message || err); 25 | do_wb(req, body, url, res); 26 | }); 27 | }); 28 | }; 29 | -------------------------------------------------------------------------------- /now.json: -------------------------------------------------------------------------------- 1 | { 2 | "version": 2 3 | } 4 | -------------------------------------------------------------------------------- /package-lock.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "sheetaki", 3 | "version": "0.0.1", 4 | "lockfileVersion": 1, 5 | "requires": true, 6 | "dependencies": { 7 | "accepts": { 8 | "version": "1.3.7", 9 | "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz", 10 | "integrity": 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797 | "word": { 798 | "version": "0.3.0", 799 | "resolved": "https://registry.npmjs.org/word/-/word-0.3.0.tgz", 800 | "integrity": "sha512-OELeY0Q61OXpdUfTp+oweA/vtLVg5VDOXh+3he3PNzLGG/y0oylSOC1xRVj0+l4vQ3tj/bB1HVHv1ocXkQceFA==" 801 | }, 802 | "xlsx": { 803 | "version": "0.16.9", 804 | "resolved": "https://registry.npmjs.org/xlsx/-/xlsx-0.16.9.tgz", 805 | "integrity": "sha512-gxi1I3EasYvgCX1vN9pGyq920Ron4NO8PNfhuoA3Hpq6Y8f0ECXiy4OLrK4QZBnj1jx3QD+8Fq5YZ/3mPZ5iXw==", 806 | "requires": { 807 | "adler-32": "~1.2.0", 808 | "cfb": "^1.1.4", 809 | "codepage": "~1.14.0", 810 | "commander": "~2.17.1", 811 | "crc-32": "~1.2.0", 812 | "exit-on-epipe": "~1.0.1", 813 | "fflate": "^0.3.8", 814 | "ssf": "~0.11.2", 815 | "wmf": "~1.0.1", 816 | "word": "~0.3.0" 817 | } 818 | } 819 | } 820 | } 821 | -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "sheetaki", 3 | "version": "0.0.1", 4 | "author": "sheetjs", 5 | "description": "Spreadsheet CSV conversion microservice", 6 | "keywords": [ 7 | "csv", 8 | "spreadsheet", 9 | "data", 10 | "conversion", 11 | "excel" 12 | ], 13 | "dependencies": { 14 | "body-parser": "^1.19.0", 15 | "express": "^4.17.1", 16 | "formidable-serverless": "", 17 | "request": "", 18 | "xlsx": "" 19 | }, 20 | "scripts": { 21 | "build": "echo hai", 22 | "start": "node api/server.js" 23 | }, 24 | "homepage": "https://sheetaki.now.sh", 25 | "license": "Apache-2.0" 26 | } 27 | -------------------------------------------------------------------------------- /public/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | SheetJS Spreadsheet Conversion Service 4 | 5 | 6 | 7 | 8 | 
 9 | SheetJS Spreadsheet Conversion Service
10 | 
11 | Proxy: send a request to /api/data to convert the spreadsheet at `url` to a simpler format
12 | 
13 | parameters:
14 | - url=<url>      the url to request
15 | - N=<idx>        the sheet index to use (-1 returns a list of sheet names in the workbook)
16 | - t=<type>       export type: "json" for json, "html" for html, default is CSV
17 | 
18 | examples:
19 |
20 | 

21 | 
47 | 
48 | 
49 | Upload: upload a file to /api/upload to convert the spreadsheet at `url` to a simpler format
50 | 
51 | parameters:
52 | - N=<idx>        the sheet index to use (-1 returns a list of sheet names in the workbook)
53 | - t=<type>       export type: "json" for json, "html" for html, default is CSV
54 | 
55 | example:
56 | 

57 | 
58 | 
59 | 
60 | 
61 | 
66 | 
67 | 
68 | 

69 | 
70 | This service is powered by SheetJS
71 | 
72 | Source Code:
73 | 
74 | - Source code for this service
75 | 
76 | - Source code for the SheetJS spreadsheet library
77 | 

78 | 
91 | 
92 | 
93 | 


--------------------------------------------------------------------------------
/src/util.js:
--------------------------------------------------------------------------------
 1 | const XLSX = require('xlsx');
 2 | 
 3 | module.exports = function(req, body, url, res) {
 4 | 	/* try to read the buffer */
 5 | 	let wb;
 6 | 	try {
 7 | 		wb = XLSX.read(body, {type:'buffer'});
 8 | 	} catch(e) { return res.status(500).send(e.message || e); }
 9 | 
10 | 	/* N parameter specifies worksheet index */
11 | 	const N = url.query.N ? parseInt(url.query.N,10) : 0;
12 | 
13 | 	/* -1 -> return sheet names */
14 | 	if(N < 0) switch(url.query.t || "csv") {
15 | 		case "json": return res.status(200).send(JSON.stringify(wb.SheetNames.join("\n")));
16 | 		default: return res.status(200).send(wb.SheetNames.join("\n"));
17 | 	}
18 | 
19 | 	/* find worksheet */
20 | 	if(N >= wb.SheetNames.length) return res.status(500).send(`Cannot find sheet ${N}`);
21 | 	const ws = wb.Sheets[wb.SheetNames[N]];
22 | 
23 | 	/* result depends on "t" parameter:
24 | 	 * - json: AOA (sheet_to_json with header:1, raw: true)
25 | 	 * - html: HTML (using stream.to_html)
26 | 	 * default: CSV (using stream.to_csv)
27 | 	 */
28 | 	switch(url.query.t) {
29 | 		case "json": return res.status(200).json(XLSX.utils.sheet_to_json(ws, {header:1, raw:true}));
30 | 		case "html": return XLSX.stream.to_html(ws).pipe(res);
31 | 		default: return XLSX.stream.to_csv(ws).pipe(res);
32 | 	}
33 | };
34 | 


--------------------------------------------------------------------------------