54 lines
1.3 KiB
JavaScript
54 lines
1.3 KiB
JavaScript
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const util = require('util');
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const Stream = require('stream');
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const DataStore = require('./datastore');
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const fs = {};
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const FILESYSTEM = new DataStore();
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fs.createWriteStream = function createWriteStream(path) {
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return new WriteStream(path);
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};
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fs.createReadStream = function createReadStream(path) {
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return new ReadStream(path);
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};
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fs.rename = FILESYSTEM.rename.bind(FILESYSTEM);
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fs.writeFile = FILESYSTEM.writeFile.bind(FILESYSTEM);
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fs.readFile = FILESYSTEM.writeFile.bind(FILESYSTEM);
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fs.readdir = FILESYSTEM.readdir.bind(FILESYSTEM);
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fs.unlink = FILESYSTEM.unlink.bind(FILESYSTEM);
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function WriteStream(path) {
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this._buffer = '';
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this.path = path;
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this.writable = true;
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this.bytesWritten = 0;
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};
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util.inherits(WriteStream, Stream);
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WriteStream.prototype.write = function write(data) {
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this._buffer += data;
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this.bytesWritten += data.length;
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};
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WriteStream.prototype.end = function end() {
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FILESYSTEM.writeFile(this.path, this._buffer, function (err) {
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this.emit('close');
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}.bind(this));
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};
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function ReadStream(path) {
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this.readable = true;
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this.path = path;
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};
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util.inherits(ReadStream, Stream);
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ReadStream.prototype.pipe = function pipe(dest) {
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console.log('path', this.path);
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FILESYSTEM.readFile(this.path, function (err, dataObj) {
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dest.write(dataObj.data);
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});
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return dest;
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};
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module.exports = fs;
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