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nodebb/src/file.js

106 lines
2.6 KiB
JavaScript

"use strict";
var fs = require('fs');
var nconf = require('nconf');
var path = require('path');
var winston = require('winston');
var jimp = require('jimp');
var utils = require('../public/src/utils');
var file = {};
file.saveFileToLocal = function (filename, folder, tempPath, callback) {
/*
* remarkable doesn't allow spaces in hyperlinks, once that's fixed, remove this.
*/
filename = filename.split('.');
filename.forEach(function (name, idx) {
filename[idx] = utils.slugify(name);
});
filename = filename.join('.');
var uploadPath = path.join(nconf.get('base_dir'), nconf.get('upload_path'), folder, filename);
winston.verbose('Saving file ' + filename + ' to : ' + uploadPath);
var is = fs.createReadStream(tempPath);
var os = fs.createWriteStream(uploadPath);
is.on('end', function () {
callback(null, {
url: nconf.get('upload_url') + '/' + folder + '/' + filename,
path: uploadPath
});
});
os.on('error', callback);
is.pipe(os);
};
file.base64ToLocal = function (imageData, uploadPath, callback) {
var buffer = new Buffer(imageData.slice(imageData.indexOf('base64') + 7), 'base64');
uploadPath = path.join(nconf.get('base_dir'), nconf.get('upload_path'), uploadPath);
fs.writeFile(uploadPath, buffer, {
encoding: 'base64'
}, function (err) {
callback(err, uploadPath);
});
};
file.isFileTypeAllowed = function (path, callback) {
var plugins = require('./plugins');
if (plugins.hasListeners('filter:file.isFileTypeAllowed')) {
return plugins.fireHook('filter:file.isFileTypeAllowed', path, function (err) {
callback(err);
});
}
// Attempt to read the file, if it passes, file type is allowed
jimp.read(path, function (err) {
callback(err);
});
};
file.allowedExtensions = function () {
var meta = require('./meta');
var allowedExtensions = (meta.config.allowedFileExtensions || '').trim();
if (!allowedExtensions) {
return [];
}
allowedExtensions = allowedExtensions.split(',');
allowedExtensions = allowedExtensions.filter(Boolean).map(function (extension) {
extension = extension.trim();
if (!extension.startsWith('.')) {
extension = '.' + extension;
}
return extension;
});
if (allowedExtensions.indexOf('.jpg') !== -1 && allowedExtensions.indexOf('.jpeg') === -1) {
allowedExtensions.push('.jpeg');
}
return allowedExtensions;
};
file.exists = function (path, callback) {
fs.stat(path, function (err, stat) {
callback(!err && stat);
});
};
file.existsSync = function (path) {
var exists = false;
try {
exists = fs.statSync(path);
} catch(err) {
exists = false;
}
return !!exists;
};
module.exports = file;