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ModScanner.js
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ModScanner.js
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/**
* ModScanner
* Created at 28.01.17
*/
import fs from 'fs';
import path from 'path';
import { armaRootStandardFolders } from '../constants';
import { fromJS } from 'immutable';
/*
const
strArmaDir = process.argv[2]; // "${HOME}/.local/share/Steam/SteamApps/common/Arma 3";
const
strWsDir = process.argv[3]; // "${HOME}/.local/share/Steam/SteamApps/workshop/content/107410";
megaScan(strArmaDir, strWsDir);
*/
export default class ModScanner {
/**
* File parser to extract mod name
* @param {string} flnm filename to read and search name = ... line in it
* @param {string} encoding name string (or null if not found or in case of error)
* @return {string} mod name
*/
static parseFileForName(flnm, encoding = "utf8") {
const nmRegEx = /^\s*name\s*=\s*\"(.+)\"\s*;\s*$/m;
const unesc = /\\(.)/g;
try {
const fileContents = fs.readFileSync(flnm, encoding);
const nmMatches = fileContents.match(nmRegEx);
if (nmMatches && nmMatches.length > 1) {
return nmMatches[1].replace(unesc, "$1");
}
} catch (e) {
}
return null;
}
/**
* Dir access check
* @param {string} drnm directory path to check
* @param {int} mode see access mode of fs.accessSync
* @param {bool} deref dereference symlinks
* @return {boolean}
* !side effect: symlinks dereferenced
*/
static checkDirAccessible(drnm, mode = fs.constants.R_OK | fs.constants.X_OK, deref = true) {
try {
var subStat;
if (deref) {
subStat = fs.statSync(drnm);
} else {
subStat = fs.lstatSync(drnm);
}
if (subStat.isDirectory()) {
fs.accessSync(drnm, mode);
return true;
}
} catch (e) {
}
return false;
}
static normalizeLinkName(lnkName) {
let replLink = /[\s():]+/g;
let linkName = lnkName.replace(replLink, "_");
replLink = /_+$/g;
linkName = linkName.replace(replLink, "");
if (linkName[0] != '@') {
linkName = "@" + linkName;
}
return linkName;
}
static isAllNumbers(str) {
return str.search(/^[0-9]+$/) != -1;
}
/**
* Mods scanner
* @param {string} scanPath path to scan for mods
* @param {Array} ignore array of names to ignore
* @return {Map} string to array: "real location" to array: ["directory entry, relative path", "", "real location", "mod name if any", "meta name if any", "suggested symlink name"]
*/
static scanForMods(scanPath, ignore = []) {
const mapMods = fromJS({}).asMutable();
var arrEntries = fs.readdirSync(scanPath);
var i = 0;
for (; i < arrEntries.length; ++i) {
var dirEntry = arrEntries[i];
if (-1 != ignore.indexOf(dirEntry))
continue;
var linkName = dirEntry;
var realBaseName = dirEntry;
var realLoc = scanPath + path.sep + dirEntry;
var entryStat = fs.lstatSync(realLoc);
if (entryStat.isSymbolicLink()) {
realLoc = fs.realpathSync(realLoc);
entryStat = fs.statSync(realLoc);
realBaseName = realLoc.split(/[\\/]/).pop();
}
if (entryStat.isDirectory()) {
var modEntry = fromJS([]).asMutable();
var isMod = false;
// check if it's a mod
var modName = this.parseFileForName(realLoc + path.sep + "mod.cpp");
var metaName = this.parseFileForName(realLoc + path.sep + "meta.cpp");
if (!modName && !metaName) {
// last try: check for addons directory
if (this.checkDirAccessible(realLoc + path.sep + "addons") || this.checkDirAccessible(realLoc + path.sep + "Addons")) {
isMod = true;
modName = metaName = ""; //dirEntry;
if (this.isAllNumbers(dirEntry) && !this.isAllNumbers(realBaseName)) {
linkName = realBaseName;
}
} else {
console.log("Failed entry: " + dirEntry + ": no .cpp files, no addons directory");
}
} else {
isMod = true;
if (!!modName && !!metaName) {
if (modName.length < metaName.length) {
linkName = modName;
} else {
linkName = metaName;
}
} else {
if (!metaName) {
metaName = "";
linkName = modName;
}
if (!modName) {
modName = "";
linkName = metaName;
}
}
}
if (isMod) {
linkName = this.normalizeLinkName(linkName);
modEntry.push(dirEntry);
modEntry.push(realLoc);
modEntry.push(modName);
modEntry.push(metaName);
modEntry.push(linkName);
mapMods.set(realLoc, fromJS(modEntry));
}
}
}
return mapMods;
}
/**
* mods scanner
* @param {string} armaDir directory where arma installed
* @param {string} workshopDir workshop content directory
* @param {function} logger custom log tool
* @return {Array} of strings: use them as arma's -mod= args
*/
static megaScan(armaDir, workshopDir, logger = (m) => console.warn(m)) {
const modNames = [];
const armaMods = this.scanForMods(armaDir, armaRootStandardFolders);
armaMods.forEach((value, realPath) => {
modNames.push(armaMods.getIn([realPath, 0]))
});
const workshopMods = this.scanForMods(workshopDir, []);
workshopMods.forEach((value, realPath) => {
logger("Processing WS mod: " + realPath);
if (armaMods.has(realPath)) {
logger(`Not creating link: Mod already present: ${armaMods.getIn([realPath, 0])}; effectively ${armaMods.getIn([realPath, 1])}`);
} else {
// first check if name is taken
if (fs.existsSync(armaDir + path.sep + workshopMods.getIn([realPath, 4]))) {
logger(`Not creating link '${realPath} -> ${workshopMods.getIn([realPath, 4])}': link name exists`);
} else {
logger(`Creating symlink: ${armaDir}${path.sep}${workshopMods.getIn([realPath, 4])} -> ${workshopDir}${path.sep}${workshopMods.getIn([realPath, 0])}`);
try {
fs.symlinkSync(workshopDir + path.sep + workshopMods.getIn([realPath, 0]), armaDir + path.sep + workshopMods.getIn([realPath, 4]), "dir");
logger(`Created symlink: ${armaDir}${path.sep}${workshopMods.getIn([realPath, 4])} -> ${workshopDir}${path.sep}${workshopMods.getIn([realPath, 0])}`);
modNames.push(workshopMods.getIn([realPath, 4]));
} catch (e) {}
}
}
});
return modNames;
}
}