DolphinWX: Only read titles.txt once

titles.txt is read into a map and passed to the GameListItem
constructor, making game list scanning a bit more efficient.

ISOPropreties's constructor is changed to take a GameListItem as an
argument instead of creating one on its own, because ISOPropreties
doesn't have the titles.txt map that the GameListItem constructor wants.

6 files changed, 57 insertions, 53 deletions

diff --git a/Source/Core/DolphinWX/Cheats/CreateCodeDialog.cpp b/Source/Core/DolphinWX/Cheats/CreateCodeDialog.cpp
index 5239a1817a..60c600702b 100644
--- a/Source/Core/DolphinWX/Cheats/CreateCodeDialog.cpp
+++ b/Source/Core/DolphinWX/Cheats/CreateCodeDialog.cpp
@@ -87,7 +87,7 @@ void CreateCodeDialog::PressOK(wxCommandEvent& ev)
 
 	// pretty hacky - add the code to the gameini
 	{
-	CISOProperties isoprops(SConfig::GetInstance().m_LastFilename, this);
+	CISOProperties isoprops(GameListItem(SConfig::GetInstance().m_LastFilename, std::unordered_map<std::string, std::string>()), this);
 	// add the code to the isoproperties arcode list
 	arCodes->push_back(new_cheat);
 	// save the gameini
diff --git a/Source/Core/DolphinWX/GameListCtrl.cpp b/Source/Core/DolphinWX/GameListCtrl.cpp
index 01aa4afa18..8d5ed1d61a 100644
--- a/Source/Core/DolphinWX/GameListCtrl.cpp
+++ b/Source/Core/DolphinWX/GameListCtrl.cpp
@@ -9,6 +9,7 @@
 #include <cstring>
 #include <memory>
 #include <string>
+#include <unordered_map>
 #include <vector>
 #include <wx/bitmap.h>
 #include <wx/buffer.h>
@@ -439,6 +440,28 @@ void CGameListCtrl::ScanForISOs()
 {
 	ClearIsoFiles();
 
+	// Load custom game titles from titles.txt
+	// http://www.gametdb.com/Wii/Downloads
+	std::unordered_map<std::string, std::string> custom_title_map;
+	std::ifstream titlestxt;
+	OpenFStream(titlestxt, File::GetUserPath(D_LOAD_IDX) + "titles.txt", std::ios::in);
+
+	if (!titlestxt.is_open())
+		OpenFStream(titlestxt, File::GetUserPath(D_LOAD_IDX) + "wiitdb.txt", std::ios::in);
+
+	if (titlestxt.is_open())
+	{
+		std::string line;
+		while (!titlestxt.eof() && std::getline(titlestxt, line))
+		{
+			const size_t equals_index = line.find('=');
+			if (equals_index != std::string::npos)
+				custom_title_map.emplace(StripSpaces(line.substr(0, equals_index)),
+			                             StripSpaces(line.substr(equals_index + 1)));
+		}
+		titlestxt.close();
+	}
+
 	std::vector<std::string> Extensions;
 
 	if (SConfig::GetInstance().m_ListGC)
@@ -485,7 +508,7 @@ void CGameListCtrl::ScanForISOs()
 			if (dialog.WasCancelled())
 				break;
 
-			auto iso_file = std::make_unique<GameListItem>(rFilenames[i]);
+			auto iso_file = std::make_unique<GameListItem>(rFilenames[i], custom_title_map);
 
 			if (iso_file->IsValid())
 			{
@@ -580,7 +603,7 @@ void CGameListCtrl::ScanForISOs()
 
 		for (const auto& drive : drives)
 		{
-			auto gli = std::make_unique<GameListItem>(drive);
+			auto gli = std::make_unique<GameListItem>(drive, custom_title_map);
 
 			if (gli->IsValid())
 				m_ISOFiles.push_back(gli.release());
@@ -991,7 +1014,7 @@ void CGameListCtrl::OnProperties(wxCommandEvent& WXUNUSED (event))
 	if (!iso)
 		return;
 
-	CISOProperties* ISOProperties = new CISOProperties(iso->GetFileName(), this);
+	CISOProperties* ISOProperties = new CISOProperties(*iso, this);
 	ISOProperties->Show();
 }
 
diff --git a/Source/Core/DolphinWX/ISOFile.cpp b/Source/Core/DolphinWX/ISOFile.cpp
index 00f707529b..28051d0fb0 100644
--- a/Source/Core/DolphinWX/ISOFile.cpp
+++ b/Source/Core/DolphinWX/ISOFile.cpp
@@ -8,6 +8,7 @@
 #include <cstring>
 #include <memory>
 #include <string>
+#include <unordered_map>
 #include <utility>
 #include <vector>
 #include <wx/app.h>
@@ -62,7 +63,7 @@ static std::string GetLanguageString(DiscIO::IVolume::ELanguage language, std::m
 	return "";
 }
 
-GameListItem::GameListItem(const std::string& _rFileName)
+GameListItem::GameListItem(const std::string& _rFileName, const std::unordered_map<std::string, std::string>& custom_titles)
 	: m_FileName(_rFileName)
 	, m_emu_state(0)
 	, m_FileSize(0)
@@ -135,38 +136,18 @@ GameListItem::GameListItem(const std::string& _rFileName)
 
 		if (!m_has_custom_name)
 		{
-			// Attempt to load game titles from titles.txt
-			// http://www.gametdb.com/Wii/Downloads
-			std::ifstream titlestxt;
-			OpenFStream(titlestxt, File::GetUserPath(D_LOAD_IDX) + "titles.txt", std::ios::in);
+			std::string game_id = m_UniqueID;
 
-			if (!titlestxt.is_open())
-				OpenFStream(titlestxt, File::GetUserPath(D_LOAD_IDX) + "wiitdb.txt", std::ios::in);
+			// Ignore publisher ID for WAD files
+			if (m_Platform == DiscIO::IVolume::WII_WAD)
+				game_id.erase(game_id.size() - 2);
 
-			if (titlestxt.is_open() && GetUniqueID().size() >= 4)
+			auto end = custom_titles.end();
+			auto it = custom_titles.find(game_id);
+			if (it != end)
 			{
-				while (!titlestxt.eof())
-				{
-					std::string line;
-
-					if (!std::getline(titlestxt, line) && titlestxt.eof())
-						break;
-
-					const size_t equals_index = line.find('=');
-					std::string game_id = m_UniqueID;
-
-					// Ignore publisher ID for WAD files
-					if (m_Platform == DiscIO::IVolume::WII_WAD)
-						game_id.erase(game_id.size() - 2);
-
-					if (line.substr(0, equals_index - 1) == game_id)
-					{
-						m_custom_name = StripSpaces(line.substr(equals_index + 1));
-						m_has_custom_name = true;
-						break;
-					}
-				}
-				titlestxt.close();
+				m_custom_name = it->second;
+				m_has_custom_name = true;
 			}
 		}
 	}
diff --git a/Source/Core/DolphinWX/ISOFile.h b/Source/Core/DolphinWX/ISOFile.h
index da5c80a300..d0e89e7a7e 100644
--- a/Source/Core/DolphinWX/ISOFile.h
+++ b/Source/Core/DolphinWX/ISOFile.h
@@ -5,6 +5,7 @@
 #pragma once
 
 #include <string>
+#include <unordered_map>
 #include <utility>
 #include <vector>
 
@@ -17,10 +18,10 @@
 #endif
 
 class PointerWrap;
-class GameListItem : NonCopyable
+class GameListItem
 {
 public:
-	GameListItem(const std::string& _rFileName);
+	GameListItem(const std::string& _rFileName, const std::unordered_map<std::string, std::string>& custom_titles);
 	~GameListItem();
 
 	bool IsValid() const {return m_Valid;}
diff --git a/Source/Core/DolphinWX/ISOProperties.cpp b/Source/Core/DolphinWX/ISOProperties.cpp
index 3f98d301a6..38487227b6 100644
--- a/Source/Core/DolphinWX/ISOProperties.cpp
+++ b/Source/Core/DolphinWX/ISOProperties.cpp
@@ -99,11 +99,12 @@ BEGIN_EVENT_TABLE(CISOProperties, wxDialog)
 	EVT_CHOICE(ID_LANG, CISOProperties::OnChangeBannerLang)
 END_EVENT_TABLE()
 
-CISOProperties::CISOProperties(const std::string& fileName, wxWindow* parent, wxWindowID id, const wxString& title, const wxPoint& position, const wxSize& size, long style)
+CISOProperties::CISOProperties(const GameListItem& game_list_item, wxWindow* parent, wxWindowID id, const wxString& title, const wxPoint& position, const wxSize& size, long style)
 	: wxDialog(parent, id, title, position, size, style)
+	, OpenGameListItem(game_list_item)
 {
 	// Load ISO data
-	OpenISO = DiscIO::CreateVolumeFromFilename(fileName);
+	OpenISO = DiscIO::CreateVolumeFromFilename(OpenGameListItem.GetFileName());
 
 	// Is it really necessary to use GetTitleID if GetUniqueID fails?
 	game_id = OpenISO->GetUniqueID();
@@ -122,8 +123,6 @@ CISOProperties::CISOProperties(const std::string& fileName, wxWindow* parent, wx
 	GameIniLocal = SConfig::LoadLocalGameIni(game_id, OpenISO->GetRevision());
 
 	// Setup GUI
-	OpenGameListItem = new GameListItem(fileName);
-
 	bRefreshList = false;
 
 	CreateGUIControls();
@@ -191,7 +190,7 @@ CISOProperties::CISOProperties(const std::string& fileName, wxWindow* parent, wx
 	bool wii = OpenISO->GetVolumeType() != DiscIO::IVolume::GAMECUBE_DISC;
 	ChangeBannerDetails(SConfig::GetInstance().GetCurrentLanguage(wii));
 
-	m_Banner->SetBitmap(OpenGameListItem->GetBitmap());
+	m_Banner->SetBitmap(OpenGameListItem.GetBitmap());
 	m_Banner->Bind(wxEVT_RIGHT_DOWN, &CISOProperties::RightClickOnBanner, this);
 
 	// Filesystem browser/dumper
@@ -205,7 +204,7 @@ CISOProperties::CISOProperties(const std::string& fileName, wxWindow* parent, wx
 			{
 				for (u32 i = 0; i < 0xFFFFFFFF; i++) // yes, technically there can be OVER NINE THOUSAND partitions...
 				{
-					std::unique_ptr<DiscIO::IVolume> volume(DiscIO::CreateVolumeFromFilename(fileName, group, i));
+					std::unique_ptr<DiscIO::IVolume> volume(DiscIO::CreateVolumeFromFilename(OpenGameListItem.GetFileName(), group, i));
 					if (volume != nullptr)
 					{
 						std::unique_ptr<DiscIO::IFileSystem> file_system(DiscIO::CreateFileSystem(volume.get()));
@@ -247,7 +246,6 @@ CISOProperties::~CISOProperties()
 {
 	if (OpenISO->GetVolumeType() == DiscIO::IVolume::GAMECUBE_DISC && pFileSystem)
 		delete pFileSystem;
-	delete OpenGameListItem;
 	delete OpenISO;
 }
 
@@ -497,7 +495,7 @@ void CISOProperties::CreateGUIControls()
 	bool wii = OpenISO->GetVolumeType() != DiscIO::IVolume::GAMECUBE_DISC;
 	DiscIO::IVolume::ELanguage preferred_language = SConfig::GetInstance().GetCurrentLanguage(wii);
 
-	std::vector<DiscIO::IVolume::ELanguage> languages = OpenGameListItem->GetLanguages();
+	std::vector<DiscIO::IVolume::ELanguage> languages = OpenGameListItem.GetLanguages();
 	int preferred_language_index = 0;
 	for (size_t i = 0; i < languages.size(); ++i)
 	{
@@ -1248,7 +1246,7 @@ void CISOProperties::OnComputeMD5Sum(wxCommandEvent& WXUNUSED (event))
 	u64 read_offset = 0;
 	md5_context ctx;
 
-	File::IOFile file(OpenGameListItem->GetFileName(), "rb");
+	File::IOFile file(OpenGameListItem.GetFileName(), "rb");
 	u64 game_size = file.GetSize();
 
 	wxProgressDialog progressDialog(
@@ -1497,14 +1495,14 @@ void CISOProperties::ActionReplayButtonClicked(wxCommandEvent& event)
 
 void CISOProperties::OnChangeBannerLang(wxCommandEvent& event)
 {
-	ChangeBannerDetails(OpenGameListItem->GetLanguages()[event.GetSelection()]);
+	ChangeBannerDetails(OpenGameListItem.GetLanguages()[event.GetSelection()]);
 }
 
 void CISOProperties::ChangeBannerDetails(DiscIO::IVolume::ELanguage language)
 {
-	wxString const name = StrToWxStr(OpenGameListItem->GetName(language));
-	wxString const comment = StrToWxStr(OpenGameListItem->GetDescription(language));
-	wxString const maker = StrToWxStr(OpenGameListItem->GetCompany());
+	wxString const name = StrToWxStr(OpenGameListItem.GetName(language));
+	wxString const comment = StrToWxStr(OpenGameListItem.GetDescription(language));
+	wxString const maker = StrToWxStr(OpenGameListItem.GetCompany());
 
 	// Updates the information shown in the window
 	m_Name->SetValue(name);
@@ -1512,8 +1510,8 @@ void CISOProperties::ChangeBannerDetails(DiscIO::IVolume::ELanguage language)
 	m_Maker->SetValue(maker);//dev too
 
 	std::string filename, extension;
-	SplitPath(OpenGameListItem->GetFileName(), nullptr, &filename, &extension);
+	SplitPath(OpenGameListItem.GetFileName(), nullptr, &filename, &extension);
 	// Also sets the window's title
 	SetTitle(StrToWxStr(StringFromFormat("%s%s: %s - ", filename.c_str(),
-		extension.c_str(), OpenGameListItem->GetUniqueID().c_str())) + name);
+		extension.c_str(), OpenGameListItem.GetUniqueID().c_str())) + name);
 }
diff --git a/Source/Core/DolphinWX/ISOProperties.h b/Source/Core/DolphinWX/ISOProperties.h
index c325c44572..fd1735830a 100644
--- a/Source/Core/DolphinWX/ISOProperties.h
+++ b/Source/Core/DolphinWX/ISOProperties.h
@@ -19,6 +19,7 @@
 #include "DiscIO/Volume.h"
 #include "DiscIO/VolumeCreator.h"
 #include "DolphinWX/ARCodeAddEdit.h"
+#include "DolphinWX/ISOFile.h"
 #include "DolphinWX/PatchAddEdit.h"
 
 class GameListItem;
@@ -58,7 +59,7 @@ struct PHackData
 class CISOProperties : public wxDialog
 {
 public:
-	CISOProperties(const std::string& fileName,
+	CISOProperties(const GameListItem& game_list_item,
 			wxWindow* parent,
 			wxWindowID id = wxID_ANY,
 			const wxString& title = _("Properties"),
@@ -215,7 +216,7 @@ private:
 	void SetRefresh(wxCommandEvent& event);
 	void OnChangeBannerLang(wxCommandEvent& event);
 
-	GameListItem* OpenGameListItem;
+	const GameListItem OpenGameListItem;
 
 	typedef std::vector<const DiscIO::SFileInfo*>::iterator fileIter;