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'use strict';
function VirtualFileSystem() {
this.fileSystem = {};
this.dataSystem = {};
}
VirtualFileSystem.prototype.existsSync = function (filename) {
filename = fixFilename(filename);
return typeof this.fileSystem[filename] !== 'undefined'
|| typeof this.dataSystem[filename] !== 'undefined';
}
VirtualFileSystem.prototype.readFileSync = function (filename, options) {
filename = fixFilename(filename);
var dataContent = this.dataSystem[filename];
if (typeof dataContent === 'string' && options === 'utf8') {
return dataContent;
}
if (dataContent) {
return new Buffer(dataContent, typeof dataContent === 'string' ? 'base64' : undefined);
}
var content = this.fileSystem[filename];
if (content) {
return content;
}
throw 'File \'' + filename + '\' not found in virtual file system';
};
VirtualFileSystem.prototype.writeFileSync = function (filename, content) {
this.fileSystem[fixFilename(filename)] = content;
};
VirtualFileSystem.prototype.bindFS = function (data) {
this.dataSystem = data || {};
};
function fixFilename(filename) {
if (filename.indexOf(__dirname) === 0) {
filename = filename.substring(__dirname.length);
}
if (filename.indexOf('/') === 0) {
filename = filename.substring(1);
}
return filename;
}
module.exports = new VirtualFileSystem();