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#include "steamutils.h"
#include <QDir>
#include <QFile>
#include <QRegularExpression>
#include <QStandardPaths>
#include <QTextStream>
static QStringList findSteamPaths()
{
QStringList paths;
QString home = QDir::homePath();
QStringList candidates = {
home + "/.local/share/Steam",
home + "/.steam/debian-installation",
home + "/.steam/steam",
home + "/.var/app/com.valvesoftware.Steam/data/Steam",
home + "/.var/app/com.valvesoftware.Steam/.local/share/Steam",
home + "/snap/steam/common/.local/share/Steam",
};
for (const auto& candidate : candidates) {
QDir dir(candidate);
if (dir.exists("steamapps") || QFile::exists(candidate + "/steam.pid")) {
// Resolve symlinks to avoid duplicates
QString canonical = QFileInfo(candidate).canonicalFilePath();
if (!canonical.isEmpty() && !paths.contains(canonical)) {
paths.append(canonical);
}
}
}
return paths;
}
static QStringList parseLibraryFolders(const QString& vdfPath)
{
QStringList folders;
QFile file(vdfPath);
if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
return folders;
QTextStream in(&file);
QString content = in.readAll();
// Match "path" entries in VDF format: "path" "/path/to/library"
static QRegularExpression re(R"--("path"\s+"([^"]+)")--");
auto it = re.globalMatch(content);
while (it.hasNext()) {
auto match = it.next();
QString path = match.captured(1);
if (QDir(path).exists()) {
folders.append(path);
}
}
return folders;
}
static QStringList getAllLibraryFolders(const QString& steamPath)
{
QStringList folders;
folders.append(steamPath);
// Parse libraryfolders.vdf
for (const auto& vdfName :
{"steamapps/libraryfolders.vdf", "config/libraryfolders.vdf"}) {
QString vdfPath = steamPath + "/" + vdfName;
for (const auto& path : parseLibraryFolders(vdfPath)) {
if (!folders.contains(path)) {
folders.append(path);
}
}
}
return folders;
}
struct AppManifest {
int appId = 0;
QString name;
QString installDir;
int stateFlags = 0;
bool isInstalled() const { return (stateFlags & 4) != 0; }
};
static AppManifest parseAppManifest(const QString& path)
{
AppManifest manifest;
QFile file(path);
if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
return manifest;
QTextStream in(&file);
QString content = in.readAll();
static QRegularExpression reAppId(R"--("appid"\s+"(\d+)")--");
static QRegularExpression reName(R"--("name"\s+"([^"]+)")--");
static QRegularExpression reInstallDir(R"--("installdir"\s+"([^"]+)")--");
static QRegularExpression reState(R"--("StateFlags"\s+"(\d+)")--");
auto m = reAppId.match(content);
if (m.hasMatch())
manifest.appId = m.captured(1).toInt();
m = reName.match(content);
if (m.hasMatch())
manifest.name = m.captured(1);
m = reInstallDir.match(content);
if (m.hasMatch())
manifest.installDir = m.captured(1);
m = reState.match(content);
if (m.hasMatch())
manifest.stateFlags = m.captured(1).toInt();
return manifest;
}
QHash<int, QString> findSteamGames()
{
QHash<int, QString> games;
for (const auto& steamPath : findSteamPaths()) {
for (const auto& libraryPath : getAllLibraryFolders(steamPath)) {
QDir steamapps(libraryPath + "/steamapps");
if (!steamapps.exists())
continue;
QStringList manifests =
steamapps.entryList({"appmanifest_*.acf"}, QDir::Files);
for (const auto& manifestFile : manifests) {
auto manifest = parseAppManifest(steamapps.filePath(manifestFile));
if (manifest.appId > 0 && manifest.isInstalled() &&
!manifest.installDir.isEmpty()) {
QString installPath =
steamapps.filePath("common/" + manifest.installDir);
if (QDir(installPath).exists()) {
games.insert(manifest.appId, installPath);
}
}
}
}
}
return games;
}
QString findSteamGamePath(int appId)
{
auto games = findSteamGames();
return games.value(appId);
}
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