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SheetJS 2022-09-10 04:19:56 -04:00
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@ -7,6 +7,10 @@ docs.sheetjs.com
TabItem
DocCardList
# frontmatter noise
api
csf
# Excel-related terms
A1-Style
AutoFilter
@ -111,6 +115,7 @@ Auth
BOM
Base64
Base64-encoded
Big5
Booleans
Browserify
Bundlers
@ -139,11 +144,13 @@ ES5
ES6
ESM
ETH
Endian
Ethercalc
ExpressJS
ExtendScript
Fastify
FileReader
GBK
GatsbyJS
Goja
HTML
@ -222,6 +229,7 @@ SWF
Schemas
Serverless
SessionStorage
Shift-JIS
SlimerJS
Snowpack
SuiteScript
@ -321,7 +329,3 @@ vscode-data-preview
webpack
weex
wkhtmltopdf
# frontmatter noise
api
csf

331
docz/docs/03-demos/03-desktop.md
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@ -1124,7 +1124,7 @@ the `ItemGroup` that contains `ReactPackageProvider.cs`:
</TabItem>
<TabItem value="cpp" label="C++">
2) Create the file `windows\SheetJSWin\DocumentPicker.h` with the following:
4) Create the file `windows\SheetJSWin\DocumentPicker.h` with the following:
```cpp title="windows\SheetJSWin\DocumentPicker.h"
#pragma once
@ -1174,7 +1174,7 @@ namespace SheetJSWin {
}
```
3) Add the highlighted line to `windows\SheetJSWin\ReactPackageProvider.cpp`:
5) Add the highlighted line to `windows\SheetJSWin\ReactPackageProvider.cpp`:
```cpp title="windows\SheetJSWin\ReactPackageProvider.cpp"
#include "ReactPackageProvider.h"
@ -1188,7 +1188,7 @@ namespace SheetJSWin {
Now the native module will be added to the app.
4) Remove `App.js` and save the following to `App.tsx`:
6) Remove `App.js` and save the following to `App.tsx`:
```tsx title="App.tsx"
import React, { useState, type Node } from 'react';
@ -1234,7 +1234,7 @@ const styles = StyleSheet.create({
export default App;
```
5) Test the app again:
7) Test the app again:
```powershell
npx react-native run-windows --no-telemetry
@ -1350,6 +1350,329 @@ import { getEnforcing } from 'react-native/Libraries/TurboModule/TurboModuleRegi
const DocumentPicker = getEnforcing('DocumentPicker');
/* ... in some event handler ... */
async() => {
const b64 = await DocumentPicker.PickAndRead();
const wb = read(b64);
// DO SOMETHING WITH `wb` HERE
}
```
## React Native MacOS
The [NodeJS Module](../getting-started/installation/nodejs) can be imported
from the main app script. File operations must be written in native code.
This demo was tested against `v0.64.30` on 2022 September 10 in MacOS 12.4
:::note
At the time of writing, the latest supported React Native version was `v0.64.3`
:::
<details><summary><b>Complete Example</b> (click to show)</summary>
0) Follow the [React Native](https://reactnative.dev/docs/environment-setup)
guide for React Native CLI on MacOS.
:::caution
NodeJS `v16` is required. There are OS-specific tools for downgrading:
- [`nvm-windows`](https://github.com/coreybutler/nvm-windows/releases) Windows
- [`nvm`](https://github.com/nvm-sh/nvm/) Linux, MacOS, WSL, etc.
:::
1) Create a new project using React Native `0.64`:
```bash
npx react-native init SheetJSmacOS --template react-native@^0.64.0
cd SheetJSmacOS
```
Create the MacOS part of the application:
```bash
npx react-native-macos-init --no-telemetry
```
Install Library:
```
npm i --save https://cdn.sheetjs.com/xlsx-latest/xlsx-latest.tgz
```
To ensure that the app works, launch the app:
```powershell
npx react-native run-macos
```
Close the running app from the dock and close the Metro terminal window.
2) Create the file `macos/SheetJSmacOS-macOS/RCTDocumentPicker.h`:
```objc title="macos/SheetJSmacOS-macOS/RCTDocumentPicker.h"
#import <React/RCTBridgeModule.h>
@interface RCTDocumentPicker : NSObject <RCTBridgeModule>
@end
```
Create the file `macos/SheetJSmacOS-macOS/RCTDocumentPicker.m`:
```objc title="macos/SheetJSmacOS-macOS/RCTDocumentPicker.m"
#import <Foundation/Foundation.h>
#import <React/RCTUtils.h>
#import "RCTDocumentPicker.h"
@implementation RCTDocumentPicker
RCT_EXPORT_MODULE();
RCT_EXPORT_METHOD(PickAndRead:(RCTPromiseResolveBlock)resolve rejecter:(RCTPromiseRejectBlock)reject)
{
RCTExecuteOnMainQueue(^{
NSOpenPanel *panel = [NSOpenPanel openPanel];
[panel setCanChooseDirectories:NO];
[panel setAllowsMultipleSelection:NO];
[panel setMessage:@"Select a spreadsheet to read"];
[panel beginWithCompletionHandler:^(NSInteger result){
if (result == NSModalResponseOK) {
NSURL *selected = [[panel URLs] objectAtIndex:0];
NSFileHandle *hFile = [NSFileHandle fileHandleForReadingFromURL:selected error:nil];
if(hFile) {
NSData *data = [hFile readDataToEndOfFile];
resolve([data base64EncodedStringWithOptions:0]);
} else reject(@"read_failure", @"Could not read selected file!", nil);
} else reject(@"select_failure", @"No file selected!", nil);
}];
});
}
@end
```
3) Edit the project file `macos/SheetJSmacOS.xcodeproj/project.pbxproj`.
There are four places where lines must be added:
A) Immediately after `/* Begin PBXBuildFile section */`
```plist
/* Begin PBXBuildFile section */
// highlight-next-line
4717DC6A28CC499A00A9BE56 /* RCTDocumentPicker.m in Sources */ = {isa = PBXBuildFile; fileRef = 4717DC6928CC499A00A9BE56 /* RCTDocumentPicker.m */; };
13B07FBC1A68108700A75B9A /* AppDelegate.m in Sources */ = {isa = PBXBuildFile; fileRef = 13B07FB01A68108700A75B9A /* AppDelegate.m */; };
```
B) Immediately after `/* Begin PBXFileReference section */`
```plist
/* Begin PBXFileReference section */
// highlight-start
4717DC6828CC495400A9BE56 /* RCTDocumentPicker.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = RCTDocumentPicker.h; path = "SheetJSMacOS-macOS/RCTDocumentPicker.h"; sourceTree = "<group>"; };
4717DC6928CC499A00A9BE56 /* RCTDocumentPicker.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; name = RCTDocumentPicker.m; path = "SheetJSMacOS-macOS/RCTDocumentPicker.m"; sourceTree = "<group>"; };
// highlight-end
008F07F21AC5B25A0029DE68 /* main.jsbundle */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = main.jsbundle; sourceTree = "<group>"; };
```
C) The goal is to add a reference to the `PBXSourcesBuildPhase` block for the
`macOS` target. To determine this, look in the `PBXNativeTarget section` for
a block with the comment `SheetJSmacOS-macOS`:
```plist
/* Begin PBXNativeTarget section */
...
productType = "com.apple.product-type.application";
};
// highlight-next-line
514201482437B4B30078DB4F /* SheetJSmacOS-macOS */ = {
isa = PBXNativeTarget;
...
/* End PBXNativeTarget section */
```
Within the block, look for `buildPhases` and find the hex string for `Sources`:
```plist
buildPhases = (
1A938104A937498D81B3BD3B /* [CP] Check Pods Manifest.lock */,
381D8A6F24576A6C00465D17 /* Start Packager */,
// highlight-next-line
514201452437B4B30078DB4F /* Sources */,
514201462437B4B30078DB4F /* Frameworks */,
514201472437B4B30078DB4F /* Resources */,
381D8A6E24576A4E00465D17 /* Bundle React Native code and images */,
3689826CA944E2EF44FCBC17 /* [CP] Copy Pods Resources */,
);
```
Search for that hex string (`514201452437B4B30078DB4F` in our example) in the
file and it should show up in a `PBXSourcesBuildPhase` section. Within `files`,
add the highlighted line:
```plist
514201452437B4B30078DB4F /* Sources */ = {
isa = PBXSourcesBuildPhase;
buildActionMask = 2147483647;
files = (
// highlight-next-line
4717DC6A28CC499A00A9BE56 /* RCTDocumentPicker.m in Sources */,
514201502437B4B30078DB4F /* ViewController.m in Sources */,
514201582437B4B40078DB4F /* main.m in Sources */,
5142014D2437B4B30078DB4F /* AppDelegate.m in Sources */,
);
runOnlyForDeploymentPostprocessing = 0;
};
```
D) The goal is to add file references to the "main group". Search for
`/* Begin PBXProject section */` and there should be one Project object.
Within the project object, look for `mainGroup`:
```plist
/* Begin PBXProject section */
83CBB9F71A601CBA00E9B192 /* Project object */ = {
isa = PBXProject;
...
Base,
);
// highlight-next-line
mainGroup = 83CBB9F61A601CBA00E9B192;
productRefGroup = 83CBBA001A601CBA00E9B192 /* Products */;
...
/* End PBXProject section */
```
Search for that hex string (`83CBB9F61A601CBA00E9B192` in our example) in the
file and it should show up in a `PBXGroup` section. Within `children`, add the
highlighted lines:
```plist
83CBB9F61A601CBA00E9B192 = {
isa = PBXGroup;
children = (
// highlight-start
4717DC6828CC495400A9BE56 /* RCTDocumentPicker.h */,
4717DC6928CC499A00A9BE56 /* RCTDocumentPicker.m */,
// highlight-end
5142014A2437B4B30078DB4F /* SheetJSmacOS-macOS */,
13B07FAE1A68108700A75B9A /* SheetJSmacOS-iOS */,
```
4) Replace `App.js` with the following:
```tsx title="App.js"
import React, { useState, type Node } from 'react';
import { SafeAreaView, ScrollView, StyleSheet, Text, TouchableHighlight, View } from 'react-native';
import { read, utils, version } from 'xlsx';
import { getEnforcing } from 'react-native/Libraries/TurboModule/TurboModuleRegistry';
const DocumentPicker = getEnforcing('DocumentPicker');
const App: () => Node = () => {
const [ aoa, setAoA ] = useState(["SheetJS".split(""), "5433795".split("")]);
return (
<SafeAreaView style={styles.outer}>
<Text style={styles.title}>SheetJS × React Native MacOS {version}</Text>
<TouchableHighlight onPress={async() => {
try {
const b64 = await DocumentPicker.PickAndRead();
const wb = read(b64);
setAoA(utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]], { header: 1 } ));
} catch(err) { alert(`Error: ${err.message}`); }
}}><Text style={styles.button}>Click here to Open File!</Text></TouchableHighlight>
<ScrollView contentInsetAdjustmentBehavior="automatic">
<View style={styles.table}>{aoa.map((row,R) => (
<View style={styles.row} key={R}>{row.map((cell,C) => (
<View style={styles.cell} key={C}><Text>{cell}</Text></View>
))}</View>
))}</View>
</ScrollView>
</SafeAreaView>
);
};
const styles = StyleSheet.create({
cell: { flex: 4 },
row: { flexDirection: 'row', justifyContent: 'space-evenly', padding: 10, backgroundColor: 'white', },
table: { display: 'flex', flexDirection: 'column', alignItems: 'center', justifyContent: 'center', },
outer: { marginTop: 32, paddingHorizontal: 24, },
title: { fontSize: 24, fontWeight: '600', },
button: { marginTop: 8, fontSize: 18, fontWeight: '400', },
});
export default App;
```
5) Test the app:
```bash
npx react-native run-macos
```
Download <https://sheetjs.com/pres.xlsx>, then click on "open file". Use the
file picker to select the `pres.xlsx` file and the app will show the data.
6) Make a release build:
```bash
xcodebuild -workspace macos/SheetJSmacOS.xcworkspace -scheme SheetJSmacOS-macOS -config Release
```
</details>
### Reading Files
Only the main UI thread can show file pickers. This is similar to Web Worker
DOM access limitations in the Web platform.
This example defines a `PickAndRead` function that will show the file picker,
read the file contents, and return a Base64 string.
```objc
/* the resolve/reject is projected on the JS side as a Promise */
RCT_EXPORT_METHOD(PickAndRead:(RCTPromiseResolveBlock)resolve rejecter:(RCTPromiseRejectBlock)reject)
{
/* perform file picker action in the UI thread */
// highlight-next-line
RCTExecuteOnMainQueue(^{
/* create file picker */
NSOpenPanel *panel = [NSOpenPanel openPanel];
[panel setCanChooseDirectories:NO];
[panel setAllowsMultipleSelection:NO];
[panel setMessage:@"Select a spreadsheet to read"];
/* show file picker */
// highlight-next-line
[panel beginWithCompletionHandler:^(NSInteger result){
if (result == NSModalResponseOK) {
/* read data and return base64 string */
NSURL *selected = [[panel URLs] objectAtIndex:0];
NSFileHandle *hFile = [NSFileHandle fileHandleForReadingFromURL:selected error:nil];
if(hFile) {
NSData *data = [hFile readDataToEndOfFile];
// highlight-next-line
resolve([data base64EncodedStringWithOptions:0]);
} else reject(@"read_failure", @"Could not read selected file!", nil);
} else reject(@"select_failure", @"No file selected!", nil);
}];
});
}
```
This module is referenced in the same way as the React Native Windows example:
```js
import { read } from 'xlsx';
import { getEnforcing } from 'react-native/Libraries/TurboModule/TurboModuleRegistry';
const DocumentPicker = getEnforcing('DocumentPicker');
/* ... in some event handler ... */
async() => {
const b64 = await DocumentPicker.PickAndRead();