All: Use Lerna to manage monorepo

packages/lib/file-api-driver-memory.js

@@ -0,0 +1,160 @@
+const time = require('./time').default;
+const fs = require('fs-extra');
+const { basicDelta } = require('./file-api');
+
+class FileApiDriverMemory {
+	constructor() {
+		this.items_ = [];
+		this.deletedItems_ = [];
+	}
+
+	encodeContent_(content) {
+		if (content instanceof Buffer) {
+			return content.toString('base64');
+		} else {
+			return Buffer.from(content).toString('base64');
+		}
+	}
+
+	decodeContent_(content) {
+		return Buffer.from(content, 'base64').toString('utf-8');
+	}
+
+	itemIndexByPath(path) {
+		for (let i = 0; i < this.items_.length; i++) {
+			if (this.items_[i].path == path) return i;
+		}
+		return -1;
+	}
+
+	itemByPath(path) {
+		const index = this.itemIndexByPath(path);
+		return index < 0 ? null : this.items_[index];
+	}
+
+	newItem(path, isDir = false) {
+		const now = time.unixMs();
+		return {
+			path: path,
+			isDir: isDir,
+			updated_time: now, // In milliseconds!!
+			// created_time: now, // In milliseconds!!
+			content: '',
+		};
+	}
+
+	stat(path) {
+		const item = this.itemByPath(path);
+		return Promise.resolve(item ? Object.assign({}, item) : null);
+	}
+
+	async setTimestamp(path, timestampMs) {
+		const item = this.itemByPath(path);
+		if (!item) return Promise.reject(new Error(`File not found: ${path}`));
+		item.updated_time = timestampMs;
+	}
+
+	async list(path) {
+		const output = [];
+
+		for (let i = 0; i < this.items_.length; i++) {
+			const item = this.items_[i];
+			if (item.path == path) continue;
+			if (item.path.indexOf(`${path}/`) === 0) {
+				const s = item.path.substr(path.length + 1);
+				if (s.split('/').length === 1) {
+					const it = Object.assign({}, item);
+					it.path = it.path.substr(path.length + 1);
+					output.push(it);
+				}
+			}
+		}
+
+		return Promise.resolve({
+			items: output,
+			hasMore: false,
+			context: null,
+		});
+	}
+
+	async get(path, options) {
+		const item = this.itemByPath(path);
+		if (!item) return Promise.resolve(null);
+		if (item.isDir) return Promise.reject(new Error(`${path} is a directory, not a file`));
+
+		let output = null;
+		if (options.target === 'file') {
+			await fs.writeFile(options.path, Buffer.from(item.content, 'base64'));
+		} else {
+			const content = this.decodeContent_(item.content);
+			output = Promise.resolve(content);
+		}
+
+		return output;
+	}
+
+	async mkdir(path) {
+		const index = this.itemIndexByPath(path);
+		if (index >= 0) return;
+		this.items_.push(this.newItem(path, true));
+	}
+
+	async put(path, content, options = null) {
+		if (!options) options = {};
+
+		if (options.source === 'file') content = await fs.readFile(options.path);
+
+		const index = this.itemIndexByPath(path);
+		if (index < 0) {
+			const item = this.newItem(path, false);
+			item.content = this.encodeContent_(content);
+			this.items_.push(item);
+		} else {
+			this.items_[index].content = this.encodeContent_(content);
+			this.items_[index].updated_time = time.unixMs();
+		}
+	}
+
+	async delete(path) {
+		const index = this.itemIndexByPath(path);
+		if (index >= 0) {
+			const item = Object.assign({}, this.items_[index]);
+			item.isDeleted = true;
+			item.updated_time = time.unixMs();
+			this.deletedItems_.push(item);
+			this.items_.splice(index, 1);
+		}
+	}
+
+	async move(oldPath, newPath) {
+		const sourceItem = this.itemByPath(oldPath);
+		if (!sourceItem) return Promise.reject(new Error(`Path not found: ${oldPath}`));
+		this.delete(newPath); // Overwrite if newPath already exists
+		sourceItem.path = newPath;
+	}
+
+	async format() {
+		this.items_ = [];
+	}
+
+	async delta(path, options = null) {
+		const getStatFn = async path => {
+			const output = this.items_.slice();
+			for (let i = 0; i < output.length; i++) {
+				const item = Object.assign({}, output[i]);
+				item.path = item.path.substr(path.length + 1);
+				output[i] = item;
+			}
+			return output;
+		};
+
+		const output = await basicDelta(path, getStatFn, options);
+		return output;
+	}
+
+	async clearRoot() {
+		this.items_ = [];
+	}
+}
+
+module.exports = { FileApiDriverMemory };