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add some doc, tweak command names

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This commit is contained in:
Johannes Rieken
2019-07-23 09:59:41 +02:00
parent 31062c4634
commit 1740bcdbdb
3 changed files with 48 additions and 23 deletions
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34
fsconsumer-sample/src/extension.ts
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@ -1,15 +1,18 @@
/*---------------------------------------------------------
* Copyright (C) Microsoft Corporation. All rights reserved.
*--------------------------------------------------------*/
'use strict';
import * as vscode from 'vscode';
import { posix } from 'path';
import { StringDecoder } from 'string_decoder';
export function activate(context: vscode.ExtensionContext) {
// Sample 1 - Check if for a TypeScript file a JavaScript files exists
// * use `uri.with` to derive a new uri without loosing things like scheme, authority, query, or fragment
// * use `path.posix` because uris use slashes to separate paths, e.g. backslash is a valid file name character
vscode.commands.registerCommand('fsConsume/findJS', async function () {
// Command #1 - Check if for a TypeScript-file a JavaScript-file exists
// * shows how to derive a new uri from an existing uri
// * shows how to check for existence of a file
vscode.commands.registerCommand('fs/findJS', async function () {
if (!vscode.window.activeTextEditor ||
posix.extname(vscode.window.activeTextEditor.document.uri.path) !== '.ts'
) {
@ -27,8 +30,10 @@ export function activate(context: vscode.ExtensionContext) {
}
});
// Sample 2 - Sum up the size of all files inside a folder (none recursive)
vscode.commands.registerCommand('fsConsume/sumSizes', async function () {
// Command #2 - Compute total size of files in a folder
// * shows how to read a directory
// * shows how retrieve metadata for a file
vscode.commands.registerCommand('fs/sumSizes', async function () {
async function sizeOfAllFilesInFolder(folder: vscode.Uri) {
let sum = 0;
@ -52,22 +57,25 @@ export function activate(context: vscode.ExtensionContext) {
}
});
// Sample 3 - Create a Uint8Array from a string and reverse
vscode.commands.registerCommand('fsConsume/readWriteFile', async function () {
// Command #3 - Write and read a file
// * shows how to derive a new file-uri from a folder-uri
// * shows how to convert a string into a typed array and back
vscode.commands.registerCommand('fs/readWriteFile', async function () {
if (!vscode.workspace.workspaceFolders) {
return vscode.window.showInformationMessage('No folder or workspace opened');
}
const writeStr = '1€ is 1.12$ is 0.9£';
const writeData = Buffer.from(writeStr);
const writeData = Buffer.from(writeStr, 'utf8');
const folderUri = vscode.workspace.workspaceFolders[0].uri;
const fileUri = folderUri.with({ path: posix.join(folderUri.path, 'test.txt') });
const folder = vscode.workspace.workspaceFolders[0].uri;
const fileUri = folder.with({ path: posix.join(folder.path, 'test.txt') });
await vscode.workspace.fs.writeFile(fileUri, writeData);
const readData = await vscode.workspace.fs.readFile(fileUri);
const readStr = new StringDecoder().end(Buffer.from(readData));
const readStr = Buffer.from(readData).toString('utf8');
vscode.window.showInformationMessage(readStr);
});