kopia lustrzana https://github.com/c9/core
444 wiersze
16 KiB
JavaScript
444 wiersze
16 KiB
JavaScript
/*global localStorage*/
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define(function(require, exports, module) {
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"use strict";
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main.consumes = ["Plugin"];
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main.provides = ["vfs", "vfs.ping", "vfs.log", "vfs.endpoint"];
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return main;
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function main(options, imports, register) {
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var Plugin = imports.Plugin;
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var plugin = new Plugin("Ajax.org", main.consumes);
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var id;
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var vfsBaseUrl;
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var serviceUrl;
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var fsData = {};
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var pathLib = require("path");
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var Stream = require("stream").Stream;
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var basename = require("path").basename;
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var EventEmitter = require("events").EventEmitter;
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var noop = function() { console.error("not implemented"); };
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var silent = function() {};
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var connection = {};
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function load() {
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// initialize mock fsData
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findNode("/README.md", true, [
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"# Welcome to Cloud9 offline demo!",
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"",
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"This is a demo of Cloud9 ui, with a mock vfs server working with localStorage",
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"Some features that need a real server have been disabled",
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"So be sure to try the real thing at https://c9.io!"
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].join("\n"));
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findNode("~", true);
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if (options.storage != false) {
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// Try loading data from localStorage
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try {
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fsData = JSON.parse(localStorage.fsData);
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} catch (e) {}
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window.addEventListener("beforeunload", function(e) {
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localStorage.fsData = JSON.stringify(fsData);
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});
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}
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}
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function unload() {
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fsData = {};
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}
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function findNode(path, create, val) {
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if (!path) path = "/";
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var parts = path.split("/");
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if (!parts[parts.length - 1])
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parts.pop();
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var data = fsData;
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var prev = null;
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for (var i = 0; i < parts.length; i++) {
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prev = data;
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data = data["!" + parts[i]];
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if (data == null) {
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if (create && !isFile(prev))
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data = prev["!" + parts[i]] = {};
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else
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return;
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}
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}
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if (val != null)
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data = prev["!" + parts[parts.length - 1]] = { v: val, t: Date.now() };
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return data;
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}
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function ENOENT() {
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var err = new Error("ENOENT");
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err.code = "ENOENT";
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return err;
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}
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function isFile(node) {
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return typeof node == "string" || node && node.v != null;
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}
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function fileConets(node) {
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return typeof node == "string" ? node : node && node.v;
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}
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function sendStream(data, callback) {
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var stream = new Stream();
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stream.readable = true;
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callback(null, { stream: stream });
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if (Array.isArray(data)) {
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data.forEach(function(x) {
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stream.emit("data", x);
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});
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} else {
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stream.emit("data", data);
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}
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stream.emit("end");
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}
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function readStream(callback) {
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return function(err, meta) {
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if (err) return callback(err);
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var buffer = [];
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meta.stream.on("data", function(data) {
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if (typeof data == "string")
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buffer += data;
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else
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buffer = buffer.concat(data);
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});
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meta.stream.on("end", function() {
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callback(null, buffer);
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});
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};
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}
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function readBlob(blob, callback) {
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var reader = new FileReader();
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reader.onload = function() {
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callback(null, reader.result);
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};
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reader.onerror = function(e) {
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callback(e);
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};
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reader.readAsText(blob);
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}
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var watcher = new EventEmitter();
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watcher.addChange = function(path) {
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plugin.stat(path, {}, function(err, stat) {
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var dir = pathLib.dirname(path);
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var name = pathLib.basename(path);
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plugin.readdir(dir, {}, readStream(function(e, stats) {
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watcher.emit(dir, "directory", name, stat, stats);
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}));
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watcher.emit(path, err ? "delete" : "change", name, stat);
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});
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};
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watcher.watch = function(path, options, callback) {
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if (!callback) callback = options;
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setTimeout(function() {
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var w = new EventEmitter();
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var sendEvent = function(event, filename, stat, files) {
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w.emit("change", event, filename, stat, files);
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};
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watcher.on(path, sendEvent);
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w.close = function() {
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watcher.off(path, sendEvent);
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};
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callback(null, { watcher: w });
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});
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};
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watcher.unwatch = function(path, options, callback) {
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if (!callback) callback = options;
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watcher.removeAllListeners(path);
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};
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plugin.on("load", load);
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plugin.on("unload", unload);
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plugin.freezePublicAPI({
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on: function() {},
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once: function() {},
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get connection() { return connection; },
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get connecting() { return false; },
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get connected() { return true },
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get previewUrl() { throw new Error("gone"); },
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get serviceUrl() { return serviceUrl; },
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get id() { return id; },
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get baseUrl() { return vfsBaseUrl; },
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get region() { return ""; },
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rest: function(path, options, callback) {
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if (options.method == "PUT") {
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if (typeof options.body == "object") {
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return readBlob(options.body, function(e, value) {
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if (e) return callback(e);
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plugin.rest(path, {
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method: "PUT",
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body: value,
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}, callback);
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});
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}
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sendStream(options.body, function(err, stream) {
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if (err) return callback(err);
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plugin.mkfile(path, stream, callback);
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});
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} else if (options.method == "GET") {
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var result = findNode(path);
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setTimeout(function() {
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callback(null, result);
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}, 20);
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}
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},
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download: function(path, filename, isfile) {
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// TODO use jszip for folders
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if (Array.isArray(path) && path.length > 1) {
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return path.map(function(x) {
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plugin.download(x);
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});
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}
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var data = findNode(path);
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if (!isFile(data))
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return console.error("not implemented");
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var a = document.createElement('a');
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a.href = URL.createObjectURL(new Blob([fileConets(data)], { type: "text/plain" }));
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a.download = filename || basename(path);
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document.body.appendChild(a);
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a.click();
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document.body.removeChild(a);
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},
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url: noop,
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reconnect: noop,
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vfsUrl: noop,
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// File management
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resolve: noop,
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stat: function(path, options, callback) {
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var data = findNode(path);
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var name = path.split("/").pop();
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setTimeout(function() {
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if (data == null)
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return callback(ENOENT());
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var value = fileConets(data);
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var isFileNode = value != null;
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var stat = {
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name: name,
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size: isFileNode ? value.length : 1,
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mtime: data.t || 0,
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ctime: data.ct || data.t || 0,
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mime: isFileNode ? "" : "folder"
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};
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callback(null, stat);
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}, 20);
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},
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readfile: function(path, options, callback) {
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var data = findNode(path);
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setTimeout(function() {
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var value = fileConets(data);
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if (value == null)
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return callback(ENOENT());
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sendStream(value, callback);
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}, 20);
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},
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readdir: function(path, options, callback) {
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var data = findNode(path);
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setTimeout(function() {
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if (!data || isFile(data))
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return callback(ENOENT());
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var stats = Object.keys(data).map(function(n) {
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var value = fileConets(data[n]);
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var isFile = value != null;
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return {
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name: n.substr(1),
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size: isFile ? value.length : 1,
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mtime: data[n].t || 0,
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ctime: data[n].ct || data[n].t,
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mime: isFile ? "" : "folder"
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};
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});
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sendStream(stats, callback);
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});
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},
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mkfile: function(path, options, callback) {
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var parts = path.split("/");
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var name = "!" + parts.pop();
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var parent = findNode(parts.join("/"), true);
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var val = "";
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options.stream.on("data", function(e) {
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if (e) val += e;
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});
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options.stream.on("end", function(e) {
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if (e) val += e;
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setTimeout(function() {
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if (!parent)
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return callback(ENOENT());
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if (parent[name] && !isFile(parent[name]))
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return callback(new Error("EISDIR"));
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parent[name] = { v: val, t: Date.now() };
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watcher.addChange(path);
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callback(null);
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});
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});
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},
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mkdir: function(path, options, callback) {
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var data = findNode(path, true);
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setTimeout(function() {
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if (!data)
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return callback(ENOENT());
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watcher.addChange(path);
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callback();
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});
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},
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mkdirP: function(path, options, callback) {
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var data = findNode(path, true);
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setTimeout(function() {
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if (!data)
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return callback(ENOENT());
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watcher.addChange(path);
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callback();
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});
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},
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appendfile: noop,
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rmfile: function(path, options, callback) {
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var parts = path.split("/");
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var name = "!" + parts.pop();
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setTimeout(function() {
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var parent = findNode(parts.join("/"));
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if (!parent || !parent[name])
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return callback(ENOENT());
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if (!isFile(parent[name]))
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return callback(new Error("EISDIR"));
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delete parent[name];
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watcher.addChange(path);
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callback();
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});
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},
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rmdir: function(path, options, callback) {
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var parts = path.split("/");
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var name = "!" + parts.pop();
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setTimeout(function() {
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var parent = findNode(parts.join("/"));
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if (!parent || !parent[name])
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return callback(ENOENT());
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if (isFile(parent[name]))
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return callback(new Error("EISFILE"));
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delete parent[name];
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watcher.addChange(path);
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callback();
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});
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},
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rename: function(to, options, callback) {
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setTimeout(function() {
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var from = options.from;
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var overwrite = options.overwrite;
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var parts = to.split("/");
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var toName = "!" + parts.pop();
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var toParent = findNode(parts.join("/"), true);
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parts = from.split("/");
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var fromName = "!" + parts.pop();
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var fromParent = findNode(parts.join("/"));
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if (toParent[toName] != null && !overwrite)
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return callback(ENOENT());
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toParent[toName] = fromParent[fromName];
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delete fromParent[fromName];
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watcher.addChange(from);
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watcher.addChange(to);
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callback(null);
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});
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},
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copy: function(from, options, callback) {
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setTimeout(function() {
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var to = options.to;
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var overwrite = options.overwrite;
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var toParts = to.split("/");
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var toName = "!" + toParts.pop();
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var toParent = findNode(toParts.join("/"));
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var parts = from.split("/");
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var fromName = "!" + parts.pop();
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var fromParent = findNode(parts.join("/"));
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var counter = 0;
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var name = toName;
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while (toParent[toName] != null && !options.overwrite)
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toName = name + "." + (++counter);
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toParent[toName] = fromParent[fromName];
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toParts.push(toName.substr(1));
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watcher.addChange(to);
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callback(null, { to: toParts.join("/") });
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});
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},
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chmod: noop,
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symlink: noop,
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// Save and retrieve Metadata
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metadata: function(path, value, sync, callback) {
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var parts = ("/.c9/metadata" + path).split("/");
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var name = "!" + parts.pop();
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var parent = findNode(parts.join("/"), true);
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if (sync) {
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parent[name] = JSON.stringify(value);
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return callback();
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}
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setTimeout(function() {
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parent[name] = JSON.stringify(value);
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callback();
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});
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},
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readFileWithMetadata: function(path, options, callback) {
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var data = findNode(path);
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var metadata = findNode("/.c9/metadata" + path);
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var timer = setTimeout(function() {
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if (!isFile(data))
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return callback(ENOENT());
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callback(null, fileConets(data), fileConets(metadata));
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});
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return { abort: function() { clearTimeout(timer); } };
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},
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// Wrapper around fs.watch or fs.watchFile
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watch: watcher.watch,
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unwatch: watcher.unwatch,
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// Network connection
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connect: noop,
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// Process Management
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spawn: silent,
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pty: silent,
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tmux: silent,
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execFile: silent,
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killtree: silent,
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// Extending the API
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use: silent,
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extend: silent,
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unextend: silent,
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isIdle: function() { return true },
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});
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register(null, {
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"vfs": plugin,
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"vfs.ping": {},
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"vfs.log": {
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log: function() {}
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},
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"vfs.endpoint": {
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clearCache: function() {}
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}
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});
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}
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});
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