Implement resource packs

Source/Core/UICommon/ResourcePack/Manager.cpp

@@ -0,0 +1,185 @@
+// Copyright 2018 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include "UICommon/ResourcePack/Manager.h"
+
+#include "Common/CommonTypes.h"
+#include "Common/FileSearch.h"
+#include "Common/FileUtil.h"
+#include "Common/IniFile.h"
+
+#include <algorithm>
+
+namespace
+{
+std::vector<ResourcePack::ResourcePack> packs;
+
+std::string packs_path;
+}  // namespace
+
+namespace ResourcePack
+{
+IniFile GetPackConfig()
+{
+  packs_path = File::GetUserPath(D_RESOURCEPACK_IDX) + "/Packs.ini";
+
+  IniFile file;
+  file.Load(packs_path);
+
+  return file;
+}
+
+bool Init()
+{
+  packs.clear();
+  auto pack_list = Common::DoFileSearch({File::GetUserPath(D_RESOURCEPACK_IDX)}, {".zip"});
+
+  bool error = false;
+
+  IniFile file = GetPackConfig();
+
+  auto* order = file.GetOrCreateSection("Order");
+
+  std::sort(pack_list.begin(), pack_list.end(), [order](std::string& a, std::string& b) {
+    std::string order_a = a, order_b = b;
+
+    order->Get(ResourcePack(a).GetManifest()->GetID(), &order_a);
+    order->Get(ResourcePack(b).GetManifest()->GetID(), &order_b);
+
+    return order_a < order_b;
+  });
+
+  for (size_t i = 0; i < pack_list.size(); i++)
+  {
+    const auto& path = pack_list[i];
+
+    error |= !Add(path);
+
+    order->Set(packs[i].GetManifest()->GetID(), static_cast<u64>(i));
+  }
+
+  file.Save(packs_path);
+
+  return !error;
+}
+
+std::vector<ResourcePack>& GetPacks()
+{
+  return packs;
+}
+
+std::vector<ResourcePack*> GetLowerPriorityPacks(ResourcePack& pack)
+{
+  std::vector<ResourcePack*> list;
+  for (auto it = std::find(packs.begin(), packs.end(), pack) + 1; it != packs.end(); it++)
+  {
+    auto& entry = *it;
+    if (!IsInstalled(pack))
+      continue;
+
+    list.push_back(&entry);
+  }
+
+  return list;
+}
+
+std::vector<ResourcePack*> GetHigherPriorityPacks(ResourcePack& pack)
+{
+  std::vector<ResourcePack*> list;
+  auto end = std::find(packs.begin(), packs.end(), pack);
+
+  for (auto it = packs.begin(); it != end; it++)
+  {
+    auto& entry = *it;
+    if (!IsInstalled(entry))
+      continue;
+    list.push_back(&entry);
+  }
+
+  return list;
+}
+
+bool Add(const std::string& path, int offset)
+{
+  if (offset == -1)
+    offset = static_cast<int>(packs.size());
+
+  ResourcePack pack(path);
+
+  IniFile file = GetPackConfig();
+
+  auto* order = file.GetOrCreateSection("Order");
+
+  order->Set(pack.GetManifest()->GetID(), offset);
+
+  for (int i = offset; i < static_cast<int>(packs.size()); i++)
+    order->Set(packs[i].GetManifest()->GetID(), i + 1);
+
+  file.Save(packs_path);
+
+  packs.insert(packs.begin() + offset, std::move(pack));
+
+  return pack.IsValid();
+}
+
+bool Remove(ResourcePack& pack)
+{
+  const auto result = pack.Uninstall(File::GetUserPath(D_USER_IDX));
+
+  if (!result)
+    return false;
+
+  auto pack_iterator = std::find(packs.begin(), packs.end(), pack);
+
+  if (pack_iterator == packs.end())
+    return false;
+
+  std::string filename;
+
+  IniFile file = GetPackConfig();
+
+  auto* order = file.GetOrCreateSection("Order");
+
+  order->Delete(pack.GetManifest()->GetID());
+
+  int offset = pack_iterator - packs.begin();
+
+  for (int i = offset + 1; i < static_cast<int>(packs.size()); i++)
+    order->Set(packs[i].GetManifest()->GetID(), i - 1);
+
+  file.Save(packs_path);
+
+  packs.erase(pack_iterator);
+
+  return true;
+}
+
+void SetInstalled(const ResourcePack& pack, bool installed)
+{
+  IniFile file = GetPackConfig();
+
+  auto* install = file.GetOrCreateSection("Installed");
+
+  if (installed)
+    install->Set(pack.GetManifest()->GetID(), installed);
+  else
+    install->Delete(pack.GetManifest()->GetID());
+
+  file.Save(packs_path);
+}
+
+bool IsInstalled(const ResourcePack& pack)
+{
+  IniFile file = GetPackConfig();
+
+  auto* install = file.GetOrCreateSection("Installed");
+
+  bool installed;
+
+  install->Get(pack.GetManifest()->GetID(), &installed, false);
+
+  return installed;
+}
+
+}  // namespace ResourcePack