const fs = require('fs');

const path = require('path');

module.exports = {

parseVersion,

root,

isExternalLib

};

const parseString = require('xml2js').parseString;

// return the version number from `pom.xml` file

function parseVersion() {

let version = null;

const pomXml = fs.readFileSync('pom.xml', 'utf8');

parseString(pomXml, (err, result) => {

if (result.project.version && result.project.version[0]) {

version = result.project.version[0];

} else if (result.project.parent && result.project.parent[0] && result.project.parent[0].version && result.project.parent[0].version[0]) {

version = result.project.parent[0].version[0];

}

});

if (version === null) {

throw new Error('pom.xml is malformed. No version is defined');

}

return version;

}

const _root = path.resolve(__dirname, '..');

function root(args) {

args = Array.prototype.slice.call(arguments, 0);

return path.join.apply(path, [_root].concat(args));

}

function isExternalLib(module, check = /node_modules/) {

const req = module.userRequest;

if (typeof req !== 'string') {

return false;

}

return req.search(check) >= 0;

}