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joplin/packages/lib/fs-driver-base.ts
2021-01-27 17:42:58 +00:00

130 lines
3.6 KiB
TypeScript

import time from './time';
import Setting from './models/Setting';
import { filename, fileExtension } from './path-utils';
const md5 = require('md5');
export interface Stat {
birthtime: number;
mtime: number;
isDirectory(): boolean;
path: string;
size: number;
}
export interface ReadDirStatsOptions {
recursive: boolean;
}
export default class FsDriverBase {
public async stat(_path: string): Promise<Stat> {
throw new Error('Not implemented');
}
public async readDirStats(_path: string, _options: ReadDirStatsOptions = null): Promise<Stat[]> {
throw new Error('Not implemented');
}
public async exists(_path: string): Promise<boolean> {
throw new Error('Not implemented');
}
public async remove(_path: string): Promise<void> {
throw new Error('Not implemented');
}
public async isDirectory(path: string) {
const stat = await this.stat(path);
return !stat ? false : stat.isDirectory();
}
public async writeFile(_path: string, _content: string, _encoding: string = 'base64'): Promise<void> {
throw new Error('Not implemented');
}
protected async readDirStatsHandleRecursion_(basePath: string, stat: Stat, output: Stat[], options: ReadDirStatsOptions): Promise<Stat[]> {
if (options.recursive && stat.isDirectory()) {
const subPath = `${basePath}/${stat.path}`;
const subStats = await this.readDirStats(subPath, options);
for (let j = 0; j < subStats.length; j++) {
const subStat = subStats[j];
subStat.path = `${stat.path}/${subStat.path}`;
output.push(subStat);
}
}
return output;
}
public async findUniqueFilename(name: string, reservedNames: string[] = null): Promise<string> {
if (reservedNames === null) {
reservedNames = [];
}
let counter = 1;
const nameNoExt = filename(name, true);
let extension = fileExtension(name);
if (extension) extension = `.${extension}`;
let nameToTry = nameNoExt + extension;
while (true) {
// Check if the filename does not exist in the filesystem and is not reserved
const exists = await this.exists(nameToTry) || reservedNames.includes(nameToTry);
if (!exists) return nameToTry;
nameToTry = `${nameNoExt} (${counter})${extension}`;
counter++;
if (counter >= 1000) {
nameToTry = `${nameNoExt} (${new Date().getTime()})${extension}`;
await time.msleep(10);
}
if (counter >= 1100) throw new Error('Cannot find unique filename');
}
}
public async removeAllThatStartWith(dirPath: string, filenameStart: string) {
if (!filenameStart || !dirPath) throw new Error('dirPath and filenameStart cannot be empty');
const stats = await this.readDirStats(dirPath);
for (const stat of stats) {
if (stat.path.indexOf(filenameStart) === 0) {
await this.remove(`${dirPath}/${stat.path}`);
}
}
}
public async waitTillExists(path: string, timeout: number = 10000) {
const startTime = Date.now();
while (true) {
const e = await this.exists(path);
if (e) return true;
if (Date.now() - startTime > timeout) return false;
await time.msleep(100);
}
}
// TODO: move out of here and make it part of joplin-renderer
// or assign to option using .bind(fsDriver())
public async cacheCssToFile(cssStrings: string[]) {
const cssString = Array.isArray(cssStrings) ? cssStrings.join('\n') : cssStrings;
const cssFilePath = `${Setting.value('tempDir')}/${md5(escape(cssString))}.css`;
if (!(await this.exists(cssFilePath))) {
await this.writeFile(cssFilePath, cssString, 'utf8');
}
return {
path: cssFilePath,
mime: 'text/css',
};
}
public async tarExtract(_options: any) {
throw new Error('Not implemented');
}
public async tarCreate(_options: any, _filePaths: string[]) {
throw new Error('Not implemented');
}
}