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utility.js
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utility.js
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const findup = require('findup-sync');
const HOME_DIR = process.env['HOME'];
const DEFAULT_DESKTOP_FILE_LOCATIONS = [
'{home}/.local/share/applications',
'{home}/.gnome/apps/',
'/usr/share/applications',
'/usr/local/share/applications',
'/usr/share/app-install',
];
let CFG;
module.exports = {
mkdirSync,
mkfileSync,
copySync,
withCfg: (passedCFG) => {
CFG = passedCFG;
return { findDesktopFile };
}
};
function catchGenericErr(err) {
console.error('util: Generic Error', err, err.stack);
console.log('util:', arguments);
}
function findDesktopFile(fileName) {
return new Promise((fulfill, reject) => {
const desktopFileLocations = CFG.DESKTOP_FILE_LOCATIONS || DEFAULT_DESKTOP_FILE_LOCATIONS;
const patterns = [];
desktopFileLocations.forEach((parentDir) => {
const parDirWithHome = parentDir.replace('{home}', HOME_DIR);
patterns.push(parDirWithHome + '/' + fileName);
patterns.push(parDirWithHome + '/**/' + fileName);
});
const firstFile = findup(patterns);
if (!firstFile) {
const err = 'findDesktopFile cant find file; searched patterns';
console.error(err, patterns);
reject(err);
} else {
fulfill(firstFile);
}
}).catch(catchGenericErr);
}
function mkdirSync(dirPath) {
try {
fs.mkdirSync(dirPath);
} catch (err) {
if (err.code !== 'EEXIST') {
throw err;
}
}
}
function mkfileSync(filePath) {
try {
fs.writeFileSync(filePath, { flag: 'wx' });
} catch (err) {
if (err.code !== 'EEXIST') {
throw err;
}
}
}
function copySync(src, dest) {
if (!fs.existsSync(src)) {
return false;
}
const data = fs.readFileSync(src, 'utf-8');
fs.writeFileSync(dest, data);
}