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

222 lines
6.1 KiB
TypeScript

import { resolve as nodeResolve } from 'path';
import FsDriverBase, { Stat } from './fs-driver-base';
import time from './time';
const md5File = require('md5-file/promise');
const fs = require('fs-extra');
export default class FsDriverNode extends FsDriverBase {
private fsErrorToJsError_(error: any, path: string = null) {
let msg = error.toString();
if (path !== null) msg += `. Path: ${path}`;
const output: any = new Error(msg);
if (error.code) output.code = error.code;
return output;
}
public appendFileSync(path: string, string: string) {
return fs.appendFileSync(path, string);
}
public async appendFile(path: string, string: string, encoding: string = 'base64') {
try {
return await fs.appendFile(path, string, { encoding: encoding });
} catch (error) {
throw this.fsErrorToJsError_(error, path);
}
}
public async writeBinaryFile(path: string, content: any) {
try {
// let buffer = new Buffer(content);
const buffer = Buffer.from(content);
return await fs.writeFile(path, buffer);
} catch (error) {
throw this.fsErrorToJsError_(error, path);
}
}
public async writeFile(path: string, string: string, encoding: string = 'base64') {
try {
if (encoding === 'buffer') {
return await fs.writeFile(path, string);
} else {
return await fs.writeFile(path, string, { encoding: encoding });
}
} catch (error) {
throw this.fsErrorToJsError_(error, path);
}
}
// same as rm -rf
public async remove(path: string) {
try {
const r = await fs.remove(path);
return r;
} catch (error) {
throw this.fsErrorToJsError_(error, path);
}
}
public async move(source: string, dest: string) {
let lastError = null;
for (let i = 0; i < 5; i++) {
try {
const output = await fs.move(source, dest, { overwrite: true });
return output;
} catch (error) {
lastError = error;
// Normally cannot happen with the `overwrite` flag but sometime it still does.
// In this case, retry.
if (error.code == 'EEXIST') {
await time.sleep(1);
continue;
}
throw this.fsErrorToJsError_(error);
}
}
throw lastError;
}
public exists(path: string) {
return fs.pathExists(path);
}
public async mkdir(path: string) {
// Note that mkdirp() does not throw an error if the directory
// could not be created. This would make the synchroniser to
// incorrectly try to sync with a non-existing dir:
// https://github.com/laurent22/joplin/issues/2117
const r = await fs.mkdirp(path);
if (!(await this.exists(path))) throw new Error(`Could not create directory: ${path}`);
return r;
}
public async stat(path: string) {
try {
const stat = await fs.stat(path);
return {
birthtime: stat.birthtime,
mtime: stat.mtime,
isDirectory: () => stat.isDirectory(),
path: path,
size: stat.size,
};
} catch (error) {
if (error.code == 'ENOENT') return null;
throw error;
}
}
public async setTimestamp(path: string, timestampDate: any) {
return fs.utimes(path, timestampDate, timestampDate);
}
public async readDirStats(path: string, options: any = null) {
if (!options) options = {};
if (!('recursive' in options)) options.recursive = false;
let items = [];
try {
items = await fs.readdir(path);
} catch (error) {
throw this.fsErrorToJsError_(error);
}
let output: Stat[] = [];
for (let i = 0; i < items.length; i++) {
const item = items[i];
const stat = await this.stat(`${path}/${item}`);
if (!stat) continue; // Has been deleted between the readdir() call and now
stat.path = stat.path.substr(path.length + 1);
output.push(stat);
output = await this.readDirStatsHandleRecursion_(path, stat, output, options);
}
return output;
}
public async open(path: string, mode: any) {
try {
return await fs.open(path, mode);
} catch (error) {
throw this.fsErrorToJsError_(error, path);
}
}
public async close(handle: any) {
try {
return await fs.close(handle);
} catch (error) {
throw this.fsErrorToJsError_(error, '');
}
}
public async readFile(path: string, encoding: string = 'utf8') {
try {
if (encoding === 'Buffer') return await fs.readFile(path); // Returns the raw buffer
return await fs.readFile(path, encoding);
} catch (error) {
throw this.fsErrorToJsError_(error, path);
}
}
// Always overwrite destination
public async copy(source: string, dest: string) {
try {
return await fs.copy(source, dest, { overwrite: true });
} catch (error) {
throw this.fsErrorToJsError_(error, source);
}
}
public async unlink(path: string) {
try {
await fs.unlink(path);
} catch (error) {
if (error.code === 'ENOENT') return; // Don't throw if the file does not exist
throw error;
}
}
public async readFileChunk(handle: any, length: number, encoding: string = 'base64') {
// let buffer = new Buffer(length);
let buffer = Buffer.alloc(length);
const result = await fs.read(handle, buffer, 0, length, null);
if (!result.bytesRead) return null;
buffer = buffer.slice(0, result.bytesRead);
if (encoding === 'base64') return buffer.toString('base64');
if (encoding === 'ascii') return buffer.toString('ascii');
throw new Error(`Unsupported encoding: ${encoding}`);
}
public resolve(path: string) {
return require('path').resolve(path);
}
// Resolves the provided relative path to an absolute path within baseDir. The function
// also checks that the absolute path is within baseDir, to avoid security issues.
// It is expected that baseDir is a safe path (not user-provided).
public resolveRelativePathWithinDir(baseDir: string, relativePath: string) {
const resolvedBaseDir = nodeResolve(baseDir);
const resolvedPath = nodeResolve(baseDir, relativePath);
if (resolvedPath.indexOf(resolvedBaseDir) !== 0) throw new Error(`Resolved path for relative path "${relativePath}" is not within base directory "${baseDir}" (Was resolved to ${resolvedPath})`);
return resolvedPath;
}
public async md5File(path: string): Promise<string> {
return md5File(path);
}
public async tarExtract(options: any) {
await require('tar').extract(options);
}
public async tarCreate(options: any, filePaths: string[]) {
await require('tar').create(options, filePaths);
}
}