UI: Resolve symlinks when adding things to recent.

See #11131.  This also normalizes paths, captialization, etc. as
necessary.

Common/FileUtil.cpp

@@ -100,6 +100,28 @@ bool OpenCPPFile(std::fstream & stream, const std::string &filename, std::ios::o
 	return stream.is_open();
 }
 
+std::string ResolvePath(const std::string &path) {
+#ifdef _WIN32
+	HANDLE hFile = CreateFile(ConvertUTF8ToWString(path).c_str(), GENERIC_READ, FILE_SHARE_READ, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
+	if (hFile == INVALID_HANDLE_VALUE)
+		return path;
+
+	wchar_t buf[1024] = {0};
+	int result = GetFinalPathNameByHandle(hFile, buf, (int)ARRAY_SIZE(buf) - 1, FILE_NAME_NORMALIZED | VOLUME_NAME_DOS);
+	if (result >= ARRAY_SIZE(buf))
+		return path;
+
+	// Undo the \\?\C:\ syntax that's normally returned.
+	if (buf[0] == '\\' && buf[1] == '\\' && buf[2] == '?' && buf[3] == '\\' && isalpha(buf[4]) && buf[5] == ':')
+		return ConvertWStringToUTF8(buf).substr(4);
+	return ConvertWStringToUTF8(buf);
+#else
+	char buf[PATH_MAX + 1];
+	if (realpath(path.c_str(), buf) == nullptr)
+		return path;
+	return buf;
+#endif
+}
 
 // Remove any ending forward slashes from directory paths
 // Modifies argument.

Common/FileUtil.h

@@ -58,6 +58,9 @@ struct FileDetails {
 FILE *OpenCFile(const std::string &filename, const char *mode);
 bool OpenCPPFile(std::fstream & stream, const std::string &filename, std::ios::openmode mode);
 
+// Resolves symlinks and similar.
+std::string ResolvePath(const std::string &path);
+
 // Returns true if file filename exists
 bool Exists(const std::string &filename);
 

Core/Config.cpp

@@ -1209,28 +1209,32 @@ void Config::AddRecent(const std::string &file) {
 	if (iMaxRecent <= 0)
 		return;
 
-#ifdef _WIN32
-	std::string filename = ReplaceAll(file, "\\", "/");
-#else
-	std::string filename = file;
-#endif
-
+	const std::string filename = File::ResolvePath(file);
 	for (auto str = recentIsos.begin(); str != recentIsos.end(); ++str) {
-#ifdef _WIN32
-		if (!strcmpIgnore((*str).c_str(), filename.c_str(), "\\", "/")) {
-#else
-		if (!strcmp((*str).c_str(), filename.c_str())) {
-#endif
+		const std::string recent = File::ResolvePath(*str);
+		if (filename == recent) {
 			recentIsos.erase(str);
+			// We'll add it back below.
+		}
+	}
+
 	recentIsos.insert(recentIsos.begin(), filename);
 	if ((int)recentIsos.size() > iMaxRecent)
 		recentIsos.resize(iMaxRecent);
+}
+
+void Config::RemoveRecent(const std::string &file) {
+	// Don't bother with this if the user disabled recents (it's -1).
+	if (iMaxRecent <= 0)
 		return;
+
+	const std::string filename = File::ResolvePath(file);
+	for (auto str = recentIsos.begin(); str != recentIsos.end(); ++str) {
+		const std::string recent = File::ResolvePath(*str);
+		if (filename == recent) {
+			recentIsos.erase(str);
 		}
 	}
-	recentIsos.insert(recentIsos.begin(), filename);
-	if ((int)recentIsos.size() > iMaxRecent)
-		recentIsos.resize(iMaxRecent);
 }
 
 void Config::CleanRecent() {

Core/Config.h

@@ -428,6 +428,7 @@ public:
 
 	// Utility functions for "recent" management
 	void AddRecent(const std::string &file);
+	void RemoveRecent(const std::string &file);
 	void CleanRecent();
 
 	static void DownloadCompletedCallback(http::Download &download);

Core/FileSystems/VirtualDiscFileSystem.cpp

@@ -44,7 +44,7 @@ VirtualDiscFileSystem::VirtualDiscFileSystem(IHandleAllocator *_hAlloc, std::str
 	: basePath(_basePath),currentBlockIndex(0) {
 
 #ifdef _WIN32
-		if (!endsWith(basePath, "\\"))
+		if (!endsWith(basePath, "\\") && !endsWith(basePath, "/"))
 			basePath = basePath + "\\";
 #else
 		if (!endsWith(basePath, "/"))

UI/GameInfoCache.cpp

@@ -66,10 +66,7 @@ bool GameInfo::Delete() {
 			// Just delete the one file (TODO: handle two-disk games as well somehow).
 			const char *fileToRemove = filePath_.c_str();
 			File::Delete(fileToRemove);
-			auto i = std::find(g_Config.recentIsos.begin(), g_Config.recentIsos.end(), fileToRemove);
-			if (i != g_Config.recentIsos.end()) {
-				g_Config.recentIsos.erase(i);
-			}
+			g_Config.RemoveRecent(filePath_);
 			return true;
 		}
 	case IdentifiedFileType::PSP_PBP_DIRECTORY:

UI/GameScreen.cpp

@@ -354,33 +354,20 @@ bool GameScreen::isRecentGame(const std::string &gamePath) {
 	if (g_Config.iMaxRecent <= 0)
 		return false;
 
+	const std::string resolved = File::ResolvePath(gamePath);
 	for (auto it = g_Config.recentIsos.begin(); it != g_Config.recentIsos.end(); ++it) {
-#ifdef _WIN32
-		if (!strcmpIgnore((*it).c_str(), gamePath.c_str(), "\\","/"))
-#else
-		if (!strcmp((*it).c_str(), gamePath.c_str()))
-#endif
+		const std::string recent = File::ResolvePath(*it);
+		if (resolved == recent)
 			return true;
 	}
 	return false;
 }
 
 UI::EventReturn GameScreen::OnRemoveFromRecent(UI::EventParams &e) {
-	if (g_Config.iMaxRecent <= 0)
-		return UI::EVENT_DONE;
-	for (auto it = g_Config.recentIsos.begin(); it != g_Config.recentIsos.end(); ++it) {
-#ifdef _WIN32
-		if (!strcmpIgnore((*it).c_str(), gamePath_.c_str(), "\\","/")) {
-#else
-		if (!strcmp((*it).c_str(), gamePath_.c_str())) {
-#endif
-			g_Config.recentIsos.erase(it);
+	g_Config.RemoveRecent(gamePath_);
 	screenManager()->switchScreen(new MainScreen());
 	return UI::EVENT_DONE;
 }
-	}
-	return UI::EVENT_DONE;
-}
 
 class SetBackgroundPopupScreen : public PopupScreen {
 public: