Implement multiLinePasteWarning in VSCode terminal，fix the #122683

src/vs/platform/terminal/common/terminal.ts

@@ -49,6 +49,7 @@ export const enum TerminalSettingId {
 	MacOptionClickForcesSelection = 'terminal.integrated.macOptionClickForcesSelection',
 	AltClickMovesCursor = 'terminal.integrated.altClickMovesCursor',
 	CopyOnSelection = 'terminal.integrated.copyOnSelection',
+	EnableMultiLinePasteWarning = 'terminal.integrated.enableMultiLinePasteWarning',
 	DrawBoldTextInBrightColors = 'terminal.integrated.drawBoldTextInBrightColors',
 	FontFamily = 'terminal.integrated.fontFamily',
 	FontSize = 'terminal.integrated.fontSize',

src/vs/workbench/contrib/terminal/browser/terminalInstance.ts

@@ -73,6 +73,7 @@ import { TerminalCapability } from 'vs/workbench/contrib/terminal/common/capabil
 import { ITextModel } from 'vs/editor/common/model';
 import { IModelService } from 'vs/editor/common/services/model';
 import { ITextModelContentProvider, ITextModelService } from 'vs/editor/common/services/resolverService';
+import { IDialogService, IConfirmationResult } from 'vs/platform/dialogs/common/dialogs';
 
 const enum Constants {
 	/**
@@ -343,6 +344,7 @@ export class TerminalInstance extends Disposable implements ITerminalInstance {
 		@IThemeService private readonly _themeService: IThemeService,
 		@IConfigurationService private readonly _configurationService: IConfigurationService,
 		@ILogService private readonly _logService: ILogService,
+		@IDialogService private readonly _dialogService: IDialogService,
 		@IStorageService private readonly _storageService: IStorageService,
 		@IAccessibilityService private readonly _accessibilityService: IAccessibilityService,
 		@IProductService private readonly _productService: IProductService,
@@ -1058,6 +1060,47 @@ export class TerminalInstance extends Disposable implements ITerminalInstance {
 		this._terminalAltBufferActiveContextKey.set(!!(this.xterm && this.xterm.raw.buffer.active === this.xterm.raw.buffer.alternate));
 	}
 
+	private async _shouldPasteText(text: string): Promise<boolean> {
+		const textForLines = text.split(/(\r?\n)/);
+		let confirmation: IConfirmationResult;
+
+		// If the clipboard has only one line, no prompt will be triggered
+		if (textForLines.length === 1 || !this._configurationService.getValue<boolean>(TerminalSettingId.EnableMultiLinePasteWarning)) {
+			return true;
+		} else {
+			const message = nls.localize('confirmMoveTrashMessageFilesAndDirectories', "Are you sure you want to paste the following {0} lines to the terminal?", text.split(/\r\n|\n|\r/).length);
+
+			const displayItemsCount = 3;
+			const ellipsis = '…';
+
+			let detail = textForLines
+				.slice(0, displayItemsCount)
+				.map(s => s.length >= 30 ? s.slice(0, 30) + ellipsis : s)
+				.join('');
+			if (textForLines.length > displayItemsCount && !detail.endsWith(ellipsis)) {
+				detail += ellipsis;
+			}
+			const primaryButton = nls.localize({ key: 'multiLinePasteButton', comment: ['&& denotes a mnemonic'] }, "&&Paste");
+
+			confirmation = await this._dialogService.confirm({
+				type: 'question',
+				message: message,
+				detail: detail,
+				primaryButton: primaryButton,
+				checkbox: {
+					label: nls.localize('doNotAskAgain', "Do not ask me again")
+				}
+			});
+		}
+
+		if (confirmation.confirmed && confirmation.checkboxChecked) {
+			await this._configurationService.updateValue(TerminalSettingId.EnableMultiLinePasteWarning, false);
+		}
+
+		return confirmation.confirmed;
+	}
+
+
 	override dispose(immediate?: boolean): void {
 		this._logService.trace(`terminalInstance#dispose (instanceId: ${this.instanceId})`);
 		dispose(this._linkManager);
@@ -1136,8 +1179,14 @@ export class TerminalInstance extends Disposable implements ITerminalInstance {
 		if (!this.xterm) {
 			return;
 		}
+
+		let currentText: string = await this._clipboardService.readText();
+		if (!await this._shouldPasteText(currentText)) {
+			return;
+		}
+
 		this.focus();
-		this.xterm.raw.paste(await this._clipboardService.readText());
+		this.xterm.raw.paste(currentText);
 	}
 
 	async pasteSelection(): Promise<void> {

src/vs/workbench/contrib/terminal/common/terminalConfiguration.ts

@@ -133,6 +133,11 @@ const terminalConfiguration: IConfigurationNode = {
 			type: 'boolean',
 			default: false
 		},
+		[TerminalSettingId.EnableMultiLinePasteWarning]: {
+			description: localize('terminal.integrated.enableMultiLinePasteWarning', "Show a warning dialog when pasting multiple lines into the terminal."),
+			type: 'boolean',
+			default: true
+		},
 		[TerminalSettingId.DrawBoldTextInBrightColors]: {
 			description: localize('terminal.integrated.drawBoldTextInBrightColors', "Controls whether bold text in the terminal will always use the \"bright\" ANSI color variant."),
 			type: 'boolean',