Method execute

src/core/tools/WriteToFileTool.ts:29–194

(params: WriteToFileParams, task: Task, callbacks: ToolCallbacks)

	readonly name = "write_to_file" as const

	async execute(params: WriteToFileParams, task: Task, callbacks: ToolCallbacks): Promise<void> {
		const { pushToolResult, handleError, askApproval } = callbacks
		const relPath = params.path
		let newContent = params.content

		if (!relPath) {
			task.consecutiveMistakeCount++
			task.recordToolError("write_to_file")
			pushToolResult(await task.sayAndCreateMissingParamError("write_to_file", "path"))
			await task.diffViewProvider.reset()
			return
		}

		if (newContent === undefined) {
			task.consecutiveMistakeCount++
			task.recordToolError("write_to_file")
			pushToolResult(await task.sayAndCreateMissingParamError("write_to_file", "content"))
			await task.diffViewProvider.reset()
			return
		}

		const accessAllowed = task.rooIgnoreController?.validateAccess(relPath)

		if (!accessAllowed) {
			await task.say("rooignore_error", relPath)
			pushToolResult(formatResponse.rooIgnoreError(relPath))
			return
		}

		const isWriteProtected = task.rooProtectedController?.isWriteProtected(relPath) || false

		let fileExists: boolean
		const absolutePath = path.resolve(task.cwd, relPath)

		if (task.diffViewProvider.editType !== undefined) {
			fileExists = task.diffViewProvider.editType === "modify"
		} else {
			fileExists = await fileExistsAtPath(absolutePath)
			task.diffViewProvider.editType = fileExists ? "modify" : "create"
		}

		// Create parent directories early for new files to prevent ENOENT errors
		// in subsequent operations (e.g., diffViewProvider.open, fs.readFile)
		if (!fileExists) {
			await createDirectoriesForFile(absolutePath)
		}

		if (newContent.startsWith("```")) {
			newContent = newContent.split("\n").slice(1).join("\n")
		}

		if (newContent.endsWith("```")) {
			newContent = newContent.split("\n").slice(0, -1).join("\n")
		}

		if (!task.api.getModel().id.includes("claude")) {
			newContent = unescapeHtmlEntities(newContent)
		}