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SheetJS 2022-08-21 20:39:07 -04:00
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2
docz/docs/02-getting-started/02-example.mdx
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@ -18,7 +18,7 @@ and birthdays. [Click here](#live-demo) to jump to the live demo
### Raw Data
[The raw data is available in JSON form](https://theunitedstates.io/congress-legislators/data/executive.json).
[The raw data is available in JSON form](https://theunitedstates.io/congress-legislators/executive.json).
For convenience, it has been [mirrored here](https://sheetjs.com/data/executive.json)
The data result is an Array of objects. This is the data for John Adams:

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docz/docs/03-demos/03-database.md
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@ -545,8 +545,7 @@ function SheetJStorage() {
### IndexedDB
[`localForage`](https://localforage.github.io/localForage/) is a lightweight
IndexedDB wrapper that presents an async Storage interface.
`localForage` is a IndexedDB wrapper that presents an async Storage interface.
Arrays of objects can be stored using `JSON.stringify` using row index as key:

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docz/docs/03-demos/25-azure.md
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@ -16,6 +16,12 @@ will be available in the future.
This demo focuses on two key offerings: cloud storage ("Azure Blob Storage")
and the "Serverless Function" platform ("Azure Functions").
:::note
This was tested on 2022 August 21.
:::
## Azure Functions
This discussion focuses on the "HTTP Trigger" function type.
@ -210,12 +216,6 @@ Get the function url and test using the same sequence as in step 5.
## Azure Blob Storage
:::note
This was tested on 2022 August 21.
:::
The main module for Azure Blob Storage is `@azure/storage-blob`. This example
was tested using the "Connection String" authentication method. The strings
are found in the Azure Portal under "Access Keys" for the storage account.

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docz/docs/03-demos/26-aws.md Normal file
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@ -0,0 +1,266 @@
---
sidebar_position: 26
title: Amazon Web Services
---
AWS is a Cloud Services platform which includes traditional virtual machine
support, "Serverless Functions", cloud storage and much more.
:::caution
AWS iterates quickly and there is no guarantee that the referenced services
will be available in the future.
:::
This demo focuses on two key offerings: cloud storage ("S3") and the
"Serverless Function" platform ("Lambda").
:::note
This was tested on 2022 August 21.
:::
## AWS Lambda Functions
In this demo, the "Function URL" (automatic API Gateway management) features
are used. Older deployments required special "Binary Media Types" to handle
formats like XLSX. At the time of testing, the configuration was not required.
### Reading Data
In the Lambda handler method, the `event.body` attribute is a Base64-encoded
string. The `busboy` body parser can accept a decoded body.
<details><summary><b>Code Sample</b> (click to show)</summary>
```js
const XLSX = require('xlsx');
var Busboy = require('busboy');
exports.handler = function(event, context, callback) {
/* set up busboy */
var ctype = event.headers['Content-Type']||event.headers['content-type'];
var bb = Busboy({headers:{'content-type':ctype}});
/* busboy is evented; accumulate the fields and files manually */
var fields = {}, files = {};
bb.on('error', function(err) { callback(null, { body: err.message }); });
bb.on('field', function(fieldname, val) {fields[fieldname] = val });
// highlight-start
bb.on('file', function(fieldname, file, filename) {
/* concatenate the individual data buffers */
var buffers = [];
file.on('data', function(data) { buffers.push(data); });
file.on('end', function() { files[fieldname] = [Buffer.concat(buffers), filename]; });
});
// highlight-end
/* on the finish event, all of the fields and files are ready */
bb.on('finish', function() {
/* grab the first file */
var f = files["upload"];
if(!f) callback(new Error("Must submit a file for processing!"));
/* f[0] is a buffer */
// highlight-next-line
var wb = XLSX.read(f[0]);
/* grab first worksheet and convert to CSV */
var ws = wb.Sheets[wb.SheetNames[0]];
callback(null, { statusCode: 200, body: XLSX.utils.sheet_to_csv(ws) });
});
/* start the processing */
// highlight-next-line
bb.end(Buffer.from(event.body, "base64"));
};
```
</details>
### Writing Data
For safely transmitting binary data, the `base64` type should be used. Lambda
callback response `isBase64Encoded` property forces a binary download:
<details><summary><b>Code Sample</b> (click to show)</summary>
```js
var XLSX = require('xlsx');
exports.handler = function(event, context, callback) {
/* make workbook */
var wb = XLSX.read("S,h,e,e,t,J,S\n5,4,3,3,7,9,5", {type: "binary"});
/* write to XLSX file in base64 encoding */
// highlight-next-line
var body = XLSX.write(wb, {type:"base64", bookType: "xlsx"});
/* mark as attached file */
var headers = { "Content-Disposition": 'attachment; filename="SheetJSLambda.xlsx"'};
/* Send back data */
callback(null, {
statusCode: 200,
// highlight-next-line
isBase64Encoded: true,
body: body,
headers: headers
});
};
```
</details>
### Demo
<details><summary><b>Complete Example</b> (click to show)</summary>
0) Review the quick start for JavaScript on AWS
1) Create a new folder and download [`index.js`](pathname:///aws/index.js):
```bash
mkdir SheetJSLambda
cd SheetJSLambda
curl -LO https://docs.sheetjs.com/aws/index.js
```
2) Install dependencies to the current directory;
```bash
mkdir node_modules
npm install https://cdn.sheetjs.com/xlsx-latest/xlsx-latest.tgz busboy
```
3) Create a .zip package of the contents of the folder:
```bash
yes | zip -c ../SheetJSLambda.zip -r .
```
4) In the web interface for AWS Lambda, create a new Function with the options:
- Select "Author from scratch" (default choice when last verified)
- "Function Name": SheetJSLambda
- "Runtime": "Node.js" (select the version in the "Latest supported" block)
- Advanced Settings:
+ check "Enable function URL"
+ Auth type: NONE
+ Check "Configure CORS"
5) In the Interface, click "Upload from" and select ".zip file". Click the
"Upload" button in the modal, select SheetJSLambda.zip, and click "Save".
At the time of writing, the ZIP is small enough that the Lambda code editor
will load the package.
6) Enable external access to the function.
Under Configuration > Function URL, click "Edit" and ensure that Auth type is
set to NONE. If it is not, select NONE and hit Save.
Under Configuration > Permissions, scroll down to "Resource-based policy".
If no policy statements are defined, select "Add Permission" with the options:
- Select "Function URL" at the top
- Auth type: NONE
- Ensure that Statement ID is set to `FunctionURLAllowPublicAccess`
- Ensure that Principal is set to `*`
- Ensure that Action is set to `lambda:InvokeFunctionUrl`
Click "Save" and a new Policy statement should be created.
7) Find the Function URL (It is in the "Function Overview" section).
Try to access that URL in a web browser and the site will try to download
`SheetJSLambda.xlsx`. Save and open the file to confirm it is valid.
To test parsing, download <https://sheetjs.com/pres.numbers> and run
```bash
curl -X POST -F "upload=@pres.numbers" FUNCTION_URL
```
The result should be a CSV output of the first sheet.
</details>
## S3 Storage
The main module for S3 and all AWS services is `aws-sdk`.
### Reading Data
The `s3#getObject` method returns an object with a `createReadStream` method.
Buffers can be concatenated and passed to `XLSX.read`:
<details><summary><b>Code Sample</b> (click to show)</summary>
```js title="SheetJSReadFromS3.mjs"
var XLSX = require("xlsx");
var AWS = require('aws-sdk');
/* replace these constants */
var accessKeyId = "<REPLACE WITH ACCESS KEY ID>";
var secretAccessKey = "<REPLACE WITH SECRET ACCESS KEY>";
var Bucket = "<REPLACE WITH BUCKET NAME>";
var Key = "<REPLACE WITH KEY>";
/* Get stream */
var s3 = new AWS.S3({
apiVersion: '2006-03-01',
credentials: {
accessKeyId: accessKeyId,
secretAccessKey: secretAccessKey
}
});
var f = s3.getObject({ Bucket: Bucket, Key: Key }).createReadStream();
/* collect data */
var bufs = [];
f.on('data', function(data) { bufs.push(data); });
f.on('end', function() {
/* concatenate and parse */
var wb = XLSX.read(Buffer.concat(bufs));
console.log(XLSX.utils.sheet_to_csv(wb.Sheets[wb.SheetNames[0]]));
});
```
</details>
### Writing Data
`S3#upload` directly accepts a Buffer:
<details><summary><b>Code Sample</b> (click to show)</summary>
```js title="SheetJSWriteToS3.js"
var XLSX = require("xlsx");
var AWS = require('aws-sdk');
/* replace these constants */
var accessKeyId = "<REPLACE WITH ACCESS KEY ID>";
var secretAccessKey = "<REPLACE WITH SECRET ACCESS KEY>";
var Bucket = "<REPLACE WITH BUCKET NAME>";
var Key = "<REPLACE WITH KEY>";
/* Create a simple workbook and write XLSX to buffer */
var ws = XLSX.utils.aoa_to_sheet(["SheetJS".split(""), [5,4,3,3,7,9,5]]);
var wb = XLSX.utils.book_new(); XLSX.utils.book_append_sheet(wb, ws, "Sheet1");
var Body = XLSX.write(wb, {type: "buffer", bookType: "xlsx"});
/* upload buffer */
var s3 = new AWS.S3({
apiVersion: '2006-03-01',
credentials: {
accessKeyId: accessKeyId,
secretAccessKey: secretAccessKey
}
});
s3.upload({ Bucket: Bucket, Key: Key, Body: Body }, function(err, data) {
if(err) throw err;
console.log("Uploaded to " + data.Location);
});
```
</details>

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docz/docs/03-demos/index.md
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@ -51,6 +51,7 @@ The demo projects include small runnable examples and short explainers.
- [`Headless Automation`](./headless)
- [`Other JavaScript Engines`](./engines)
- [`Azure Functions and Storage`](./azure)
- [`Amazon Web Services`](./aws)
- [`Databases and Structured Data Stores`](./database)
- [`NoSQL and Unstructured Data Stores`](./nosql)
- [`Legacy Internet Explorer`](./legacy#internet-explorer)

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docz/docs/06-solutions/01-input.md
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@ -321,7 +321,7 @@ const server = http.createServer((req, res) => {
}).listen(process.env.PORT || 7262);
```
The [`server` demo](https://github.com/SheetJS/SheetJS/tree/master/demos/server) has more advanced examples.
The [`server` demo](../demos/server) has more advanced examples.
</TabItem>
<TabItem value="deno" label="Deno">

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docz/static/angularjs/index.html
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@ -17,7 +17,7 @@
The core library can be used as-is in AngularJS applications.
The <a href="https://docs.sheetjs.com">Community Edition README</a> details some common use cases.
We also have some <a href="http://sheetjs.com/demos/">more public demos</a>
We also have some <a href="https://docs.sheetjs.com/docs/demos/">more public demos</a>
This demo shows:
- $http request for XLSX file and scope update with data

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docz/static/angularjs/ui-grid.html
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@ -29,7 +29,7 @@
The core library can be used as-is in AngularJS applications.
The <a href="https://docs.sheetjs.com">Community Edition README</a> details some common use cases.
We also have some <a href="http://sheetjs.com/demos/">more public demos</a>
We also have some <a href="https://docs.sheetjs.com/docs/demos/">more public demos</a>
This demo shows:
- SheetJSExportService: a service for exporting data from a ui-grid

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docz/static/aws/index.js Normal file
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@ -0,0 +1,54 @@
/* sheetjs (C) 2013-present SheetJS -- http://sheetjs.com */
'use strict';
var XLSX = require('xlsx');
var Busboy = require('busboy');
exports.handler = function(event, context, callback) {
if(event.requestContext.http.method == "GET") {
/* make workbook */
var wb = XLSX.read("S,h,e,e,t,J,S\n5,4,3,3,7,9,5", {type: "binary"});
/* write to XLSX file in base64 encoding */
var body = XLSX.write(wb, {type:"base64", bookType: "xlsx"});
/* mark as attached file */
var headers = { "Content-Disposition": 'attachment; filename="SheetJSLambda.xlsx"'};
/* Send back data */
callback(null, {
statusCode: 200,
isBase64Encoded: true,
body: body,
headers: headers
});
return;
}
/* set up busboy */
var ctype = event.headers['Content-Type']||event.headers['content-type'];
var bb = Busboy({headers:{'content-type':ctype}});
/* busboy is evented; accumulate the fields and files manually */
var fields = {}, files = {};
bb.on('error', function(err) { callback(null, { body: err.message }); });
bb.on('field', function(fieldname, val) {fields[fieldname] = val });
bb.on('file', function(fieldname, file, filename) {
/* concatenate the individual data buffers */
var buffers = [];
file.on('data', function(data) { buffers.push(data); });
file.on('end', function() { files[fieldname] = [Buffer.concat(buffers), filename]; });
});
/* on the finish event, all of the fields and files are ready */
bb.on('finish', function() {
/* grab the first file */
var f = files["upload"];
if(!f) callback(new Error("Must submit a file for processing!"));
/* f[0] is a buffer */
var wb = XLSX.read(f[0]);
/* grab first worksheet and convert to CSV */
var ws = wb.Sheets[wb.SheetNames[0]];
callback(null, { statusCode: 200, body: XLSX.utils.sheet_to_csv(ws) });
});
bb.end(Buffer.from(event.body, "base64"));
};