node-gamedig/lib/GameResolver.js

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2019-01-12 11:43:36 +01:00
const Path = require('path'),
fs = require('fs');
class GameResolver {
constructor() {
this.games = this._readGames();
}
lookup(type) {
if(!type) throw Error('No game specified');
if(type.substr(0,9) === 'protocol-') {
return {
protocol: type.substr(9)
};
}
const game = this.games.get(type);
if(!game) throw Error('Invalid game: '+type);
return game.options;
}
printReadme() {
let out = '';
for(const [key,game] of this.games.entries()) {
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if (!game.pretty) {
continue;
}
out += "* "+game.pretty+" ("+key+")";
if(game.extra.doc_notes)
out += " [[Additional Notes](#"+game.extra.doc_notes+")]";
out += "\n";
}
return out;
}
_readGames() {
const gamesFile = Path.normalize(__dirname+'/../games.txt');
const lines = fs.readFileSync(gamesFile,'utf8').split('\n');
const games = new Map();
for (let line of lines) {
// strip comments
const comment = line.indexOf('#');
if(comment !== -1) line = line.substr(0,comment);
line = line.trim();
if(!line) continue;
const split = line.split('|');
const gameId = split[0].trim();
const options = this._parseList(split[3]);
options.protocol = split[2].trim();
games.set(gameId, {
pretty: split[1].trim(),
options: options,
extra: this._parseList(split[4])
});
}
return games;
}
_parseList(str) {
if(!str) return {};
const out = {};
for (const one of str.split(',')) {
const equals = one.indexOf('=');
const key = equals === -1 ? one : one.substr(0,equals);
let value = equals === -1 ? '' : one.substr(equals+1);
if(value === 'true' || value === '') value = true;
else if(value === 'false') value = false;
else if(!isNaN(parseInt(value))) value = parseInt(value);
out[key] = value;
}
return out;
}
}
module.exports = GameResolver;