basic steamDiscovery

include/beatsaber/beatsaber.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include <string>
+
+namespace Beatsaber {
+
+const uint32_t STEAMGAMEID = 620980;
+std::string findBeatsaberInstallation();
+
+
+}

src/beatlevel.cpp

@@ -94,6 +94,7 @@ void BeatLevelImpl::printDebug() const {
 		<< "\n    Filename: " << getFilename()
 		<< "\n    njs: " << getNoteJumpSpeed() << " nso: " << getNoteStartOffset()
 		<< "\n    noteCount: " << notes.size() << " wallCount: " << walls.size()
+		<< "\n    CustomData: " << getCustomData()
 		<< std::endl;
 }
 

src/beatsaber.cpp

@@ -0,0 +1,73 @@
+#include "beatsaber.h"
+
+#if __unix__
+#include <unistd.h>
+#include <sys/types.h>
+#include <pwd.h>
+#endif
+
+#include <fstream>
+#include <iostream> //debug print
+#include <list>
+
+namespace Beatsaber {
+
+#if __unix__
+static std::string getSteamDefault() {
+	//get the user process
+	uid_t user = getuid();
+	struct passwd pwd;
+	struct passwd* res;
+	char buf[4096];
+	getpwuid_r(user, &pwd, buf, sizeof(buf), &res);
+
+	char* userdirc = pwd.pw_dir;
+	std::string userdir(userdirc);
+
+	return userdir + "/.steam/steam";
+}
+#endif
+
+std::string findBeatsaberInstallation() {
+	//get all steamfolders
+	const std::string defaultSteam = getSteamDefault() + "/steamapps/";
+	std::ifstream libinfo(defaultSteam + "libraryfolders.vdf");
+	std::string firstline;
+	libinfo >> firstline; //remove first line, should contain: "\"LibraryFolders\""
+	
+	std::list<std::string> paths;
+	paths.push_back(defaultSteam);
+
+	std::string line;
+	while(std::getline(libinfo, line)) {
+		if(!line.empty() && line[0] == '\t') {
+			int num;
+			char pathbuffer[512];
+			int res = sscanf(line.c_str(), "\t\"%d\" \t\"%s\"", &num, pathbuffer);
+			if(res == 2) {
+				std::string path(pathbuffer);
+				paths.push_back(path + "/steamapps/");
+			}
+		}
+	}
+	libinfo.close();
+
+	std::cout << paths.size() << " steam libs found" << std::endl;
+
+	//search in libs for beatsaber
+	for(const std::string& it : paths) {
+		std::ifstream appmanifest(it + "appmanifest_" + std::to_string(STEAMGAMEID) + ".acf");
+		if(appmanifest.is_open()) {
+			//found it!
+			//do stuff with the manifest???
+			
+			appmanifest.close();
+
+			return it + "common/Beat Saber/";
+		}
+	}
+
+	return ""; //not found
+}
+
+}

tests/main.cpp

@@ -2,6 +2,7 @@
 #include "test.h"
 
 #include "beatmap.h"
+#include "beatsaber.h"
 
 //tests
 int difficulties_test();
@@ -29,6 +30,10 @@ int main(int argc, char** argv) {
 
 	printf("\033[1;93m%d\033[0;1m/%d failed\n", failcount, testcount);
 
+	//beatsaber installation dir discovery test
+	std::string installdir = Beatsaber::findBeatsaberInstallation();
+	std::cout << "Beatsaber installation directory: " << installdir << std::endl;
+
 	//simple read test
 	std::shared_ptr<Beatsaber::BeatMap> bmap = Beatsaber::BeatMap::loadFromFolder("/home/yannis/Nextcloud/yannis/Beatsaber/BeatSaverLevel/1dd (Portal - Still Alive (Uppermost Remix) - kryptikos)");
 	if(!bmap) std::cout << "Could not load File" << std::endl;