From 4c2a94fa94e0192402c816c74f5a09061e3df520 Mon Sep 17 00:00:00 2001
From: Zach Hilman <zachhilman@gmail.com>
Date: Sat, 29 Sep 2018 22:14:01 -0400
Subject: [PATCH] patch_manager: Use strings for patch type instead of enum

---
 src/core/file_sys/patch_manager.cpp | 50 ++++++++++++++++++-----------
 src/core/file_sys/patch_manager.h   | 12 ++-----
 src/yuzu/game_list_worker.cpp       |  7 ++--
 3 files changed, 36 insertions(+), 33 deletions(-)

diff --git a/src/core/file_sys/patch_manager.cpp b/src/core/file_sys/patch_manager.cpp
index 57b7741f8..10b4acc92 100644
--- a/src/core/file_sys/patch_manager.cpp
+++ b/src/core/file_sys/patch_manager.cpp
@@ -34,16 +34,6 @@ std::string FormatTitleVersion(u32 version, TitleVersionFormat format) {
     return fmt::format("v{}.{}.{}", bytes[3], bytes[2], bytes[1]);
 }
 
-constexpr std::array<const char*, 3> PATCH_TYPE_NAMES{
-    "Update",
-    "LayeredFS",
-    "DLC",
-};
-
-std::string FormatPatchTypeName(PatchType type) {
-    return PATCH_TYPE_NAMES.at(static_cast<std::size_t>(type));
-}
-
 PatchManager::PatchManager(u64 title_id) : title_id(title_id) {}
 
 PatchManager::~PatchManager() = default;
@@ -138,8 +128,19 @@ VirtualFile PatchManager::PatchRomFS(VirtualFile romfs, u64 ivfc_offset,
     return romfs;
 }
 
-std::map<PatchType, std::string> PatchManager::GetPatchVersionNames() const {
-    std::map<PatchType, std::string> out;
+void AppendCommaIfNotEmpty(std::string& to, const std::string& with) {
+    if (to.empty())
+        to += with;
+    else
+        to += ", " + with;
+}
+
+static bool IsDirValidAndNonEmpty(const VirtualDir& dir) {
+    return dir != nullptr && (!dir->GetFiles().empty() || !dir->GetSubdirectories().empty());
+}
+
+std::map<std::string, std::string> PatchManager::GetPatchVersionNames() const {
+    std::map<std::string, std::string> out;
     const auto installed = Service::FileSystem::GetUnionContents();
 
     // Game Updates
@@ -148,23 +149,34 @@ std::map<PatchType, std::string> PatchManager::GetPatchVersionNames() const {
     auto [nacp, discard_icon_file] = update.GetControlMetadata();
 
     if (nacp != nullptr) {
-        out[PatchType::Update] = nacp->GetVersionString();
+        out["Update"] = nacp->GetVersionString();
     } else {
         if (installed->HasEntry(update_tid, ContentRecordType::Program)) {
             const auto meta_ver = installed->GetEntryVersion(update_tid);
             if (meta_ver == boost::none || meta_ver.get() == 0) {
-                out[PatchType::Update] = "";
+                out["Update"] = "";
             } else {
-                out[PatchType::Update] =
+                out["Update"] =
                     FormatTitleVersion(meta_ver.get(), TitleVersionFormat::ThreeElements);
             }
         }
     }
 
-    // LayeredFS
-    const auto lfs_dir = Service::FileSystem::GetModificationLoadRoot(title_id);
-    if (lfs_dir != nullptr && lfs_dir->GetSize() > 0)
-        out.insert_or_assign(PatchType::LayeredFS, "");
+    const auto mod_dir = Service::FileSystem::GetModificationLoadRoot(title_id);
+    if (mod_dir != nullptr && mod_dir->GetSize() > 0) {
+        for (const auto& mod : mod_dir->GetSubdirectories()) {
+            std::string types;
+            if (IsDirValidAndNonEmpty(mod->GetSubdirectory("exefs")))
+                AppendCommaIfNotEmpty(types, "IPS");
+            if (IsDirValidAndNonEmpty(mod->GetSubdirectory("romfs")))
+                AppendCommaIfNotEmpty(types, "LayeredFS");
+
+            if (types.empty())
+                continue;
+
+            out.insert_or_assign(mod->GetName(), types);
+        }
+    }
 
     // DLC
     const auto dlc_entries = installed->ListEntriesFilter(TitleType::AOC, ContentRecordType::Data);
diff --git a/src/core/file_sys/patch_manager.h b/src/core/file_sys/patch_manager.h
index 3a2a9d212..7807515f9 100644
--- a/src/core/file_sys/patch_manager.h
+++ b/src/core/file_sys/patch_manager.h
@@ -24,14 +24,6 @@ enum class TitleVersionFormat : u8 {
 std::string FormatTitleVersion(u32 version,
                                TitleVersionFormat format = TitleVersionFormat::ThreeElements);
 
-enum class PatchType {
-    Update,
-    LayeredFS,
-    DLC,
-};
-
-std::string FormatPatchTypeName(PatchType type);
-
 // A centralized class to manage patches to games.
 class PatchManager {
 public:
@@ -49,8 +41,8 @@ public:
                            ContentRecordType type = ContentRecordType::Program) const;
 
     // Returns a vector of pairs between patch names and patch versions.
-    // i.e. Update v80 will return {Update, 80}
-    std::map<PatchType, std::string> GetPatchVersionNames() const;
+    // i.e. Update 3.2.2 will return {"Update", "3.2.2"}
+    std::map<std::string, std::string> GetPatchVersionNames() const;
 
     // Given title_id of the program, attempts to get the control data of the update and parse it,
     // falling back to the base control data.
diff --git a/src/yuzu/game_list_worker.cpp b/src/yuzu/game_list_worker.cpp
index e228d61bd..1947bdb93 100644
--- a/src/yuzu/game_list_worker.cpp
+++ b/src/yuzu/game_list_worker.cpp
@@ -60,14 +60,13 @@ QString FormatGameName(const std::string& physical_name) {
 QString FormatPatchNameVersions(const FileSys::PatchManager& patch_manager, bool updatable = true) {
     QString out;
     for (const auto& kv : patch_manager.GetPatchVersionNames()) {
-        if (!updatable && kv.first == FileSys::PatchType::Update)
+        if (!updatable && kv.first == "Update")
             continue;
 
         if (kv.second.empty()) {
-            out.append(fmt::format("{}\n", FileSys::FormatPatchTypeName(kv.first)).c_str());
+            out.append(fmt::format("{}\n", kv.first).c_str());
         } else {
-            out.append(fmt::format("{} ({})\n", FileSys::FormatPatchTypeName(kv.first), kv.second)
-                           .c_str());
+            out.append(fmt::format("{} ({})\n", kv.first, kv.second).c_str());
         }
     }