mirror of https://github.com/keeweb/keeweb.git
182 lines
5.5 KiB
JavaScript
182 lines
5.5 KiB
JavaScript
import { Launcher } from 'comp/launcher';
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import { StorageBase } from 'storage/storage-base';
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const fileWatchers = {};
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const StorageFile = StorageBase.extend({
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name: 'file',
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icon: 'hdd-o',
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enabled: !!Launcher,
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system: true,
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backup: true,
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load(path, opts, callback) {
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this.logger.debug('Load', path);
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const ts = this.logger.ts();
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const onError = e => {
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this.logger.error('Error reading local file', path, e);
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if (callback) {
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callback(e, null);
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}
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};
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Launcher.readFile(path, undefined, (data, err) => {
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if (err) {
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return onError(err);
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}
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Launcher.statFile(path, (stat, err) => {
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if (err) {
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return onError(err);
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}
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const rev = stat.mtime.getTime().toString();
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this.logger.debug('Loaded', path, rev, this.logger.ts(ts));
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if (callback) {
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callback(null, data.buffer, { rev });
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}
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});
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});
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},
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stat(path, opts, callback) {
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this.logger.debug('Stat', path);
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const ts = this.logger.ts();
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Launcher.statFile(path, (stat, err) => {
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if (err) {
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this.logger.error('Error stat local file', path, err);
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if (err.code === 'ENOENT') {
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err.notFound = true;
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}
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return callback && callback(err, null);
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}
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this.logger.debug('Stat done', path, this.logger.ts(ts));
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if (callback) {
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const fileRev = stat.mtime.getTime().toString();
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callback(null, { rev: fileRev });
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}
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});
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},
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save(path, opts, data, callback, rev) {
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this.logger.debug('Save', path, rev);
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const ts = this.logger.ts();
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const onError = e => {
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if (Object.prototype.hasOwnProperty.call(e, 'code') && e.code === 'EISDIR') {
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e.isDir = true;
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}
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this.logger.error('Error writing local file', path, e);
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if (callback) {
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callback(e);
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}
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};
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const write = () => {
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Launcher.writeFile(path, data, err => {
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if (err) {
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return onError(err);
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}
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Launcher.statFile(path, (stat, err) => {
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if (err) {
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return onError(err);
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}
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const newRev = stat.mtime.getTime().toString();
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this.logger.debug('Saved', path, this.logger.ts(ts));
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if (callback) {
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callback(undefined, { rev: newRev });
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}
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});
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});
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};
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if (rev) {
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Launcher.statFile(path, (stat, err) => {
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if (err) {
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return write();
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}
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const fileRev = stat.mtime.getTime().toString();
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if (fileRev !== rev) {
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this.logger.debug('Save mtime differs', rev, fileRev);
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return callback && callback({ revConflict: true }, { rev: fileRev });
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}
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write();
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});
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} else {
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write();
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}
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},
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mkdir(path, callback) {
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this.logger.debug('Make dir', path);
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const ts = this.logger.ts();
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Launcher.mkdir(path, err => {
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if (err) {
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this.logger.error('Error making local dir', path, err);
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if (callback) {
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callback('Error making local dir');
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}
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} else {
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this.logger.debug('Made dir', path, this.logger.ts(ts));
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if (callback) {
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callback();
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}
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}
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});
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},
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watch(path, callback) {
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const names = Launcher.parsePath(path);
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if (!fileWatchers[names.dir]) {
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this.logger.debug('Watch dir', names.dir);
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const fsWatcher = Launcher.createFsWatcher(names.dir);
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if (fsWatcher) {
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fsWatcher.on('change', this.fsWatcherChange.bind(this, names.dir));
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fileWatchers[names.dir] = {
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fsWatcher,
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callbacks: []
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};
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}
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}
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const fsWatcher = fileWatchers[names.dir];
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if (fsWatcher) {
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fsWatcher.callbacks.push({
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file: names.file,
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callback
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});
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}
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},
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unwatch(path) {
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const names = Launcher.parsePath(path);
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const watcher = fileWatchers[names.dir];
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if (watcher) {
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const ix = watcher.callbacks.findIndex(cb => cb.file === names.file);
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if (ix >= 0) {
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watcher.callbacks.splice(ix, 1);
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}
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if (!watcher.callbacks.length) {
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this.logger.debug('Stop watch dir', names.dir);
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watcher.fsWatcher.close();
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delete fileWatchers[names.dir];
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}
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}
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},
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fsWatcherChange(dirname, evt, fileName) {
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const watcher = fileWatchers[dirname];
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if (watcher) {
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watcher.callbacks.forEach(cb => {
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if (cb.file === fileName && typeof cb.callback === 'function') {
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this.logger.debug('File changed', dirname, evt, fileName);
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cb.callback();
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}
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});
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}
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}
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});
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export { StorageFile };
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