Autogenerate cache files if they don't exist

No longer required to have the activemods.cache and modspriority.cache files prepared in directory for ptr2plus mod loading to work. It'll make them if they don't exist.

Author: pips3

pcsx2/mods/ActiveMods.cpp

@@ -8,6 +8,18 @@ static std::string ActiveMods::GetFilename()
 {
 	return Path::Combine(EmuFolders::Cache, "activemods.cache");
 }
+
+static bool ActiveMods::CacheFileValidation()
+{
+	const std::string activemods_filename(GetFilename());
+	if (FileSystem::FileExists(activemods_filename.c_str()))
+		return true;
+	else
+	{
+		u16 data = 0;
+		return FileSystem::WriteBinaryFile(activemods_filename.c_str(), &data, 2);
+	}
+}
 	/* This would be quicker
 bool ActiveMods::ContainsMod(const std::string mod)
 {
@@ -43,6 +55,9 @@ bool ActiveMods::ContainsMod(const std::string mod)
 }
 bool ActiveMods::GetPaths(const std::string mod, std::vector<std::string>& paths)
 {
+	if (!CacheFileValidation())
+		return false;
+
 	const std::string activemods_filename(GetFilename());
 
 	const auto fp = FileSystem::OpenManagedCFile(activemods_filename.c_str(), "rb");
@@ -65,6 +80,9 @@ bool ActiveMods::GetPaths(const std::string mod, std::vector<std::string>& paths
 
 bool ActiveMods::GetMod(const std::string path, std::string& mod)
 {
+	if (!CacheFileValidation())
+		return false;
+
 	const std::string activemods_filename(GetFilename());
 
 	const auto fp = FileSystem::OpenManagedCFile(activemods_filename.c_str(), "rb");
@@ -88,6 +106,7 @@ bool ActiveMods::GetMod(const std::string path, std::string& mod)
 
 std::vector<std::pair<std::string, std::string>> ActiveMods::GetAll()
 {
+	CacheFileValidation(); //todo: error handling
 	const std::string activemods_filename(GetFilename());
 	auto fp = FileSystem::OpenManagedCFile(activemods_filename.c_str(), "rb+");
 	auto stream = fp.get();
@@ -215,6 +234,8 @@ bool ActiveMods::ReadOne(FILE* stream, std::pair<std::string, std::string>& entr
 //path, modname
 bool ActiveMods::Save(std::vector<std::pair<std::string, std::string>> activeModCache)
 {
+	if (!CacheFileValidation())
+		return false;
 	const std::string activemods_filename(GetFilename());
 
 	FileSystem::DeleteFilePath(activemods_filename.c_str());

pcsx2/mods/ActiveMods.h

@@ -4,6 +4,8 @@ namespace ActiveMods
 {
 	static std::string GetFilename();
 
+	static bool CacheFileValidation();
+
 	bool ReadOne(FILE* stream, std::pair<std::string, std::string>& entry);
 
 	bool ContainsMod(const std::string mod);

pcsx2/mods/PriorityList.cpp

@@ -10,9 +10,23 @@ static std::string PriorityList::GetFilename()
 	return Path::Combine(EmuFolders::Cache, "modpriority.cache");
 }
 
+static bool PriorityList::CacheFileValidation()
+{
+	const std::string modspriority_filename(GetFilename());
+	if (FileSystem::FileExists(modspriority_filename.c_str()))
+		return true;
+	else
+	{
+		u16 data = 0;
+		return FileSystem::WriteBinaryFile(modspriority_filename.c_str(), &data, 2);
+	}
+}
+
 //returns list of modnames in order from highest to lowest priority (0 first
 std::vector<std::string> PriorityList::Get()
 {
+	CacheFileValidation(); //todo: error handling
+
 	const std::string modspriority_filename(GetFilename());
 
 	auto fp = FileSystem::OpenManagedCFile(modspriority_filename.c_str(), "rb+");
@@ -45,6 +59,9 @@ std::vector<std::string> PriorityList::Get()
 }
 bool PriorityList::GetPriority(std::string modname, int& priority)
 {
+	if (!CacheFileValidation())
+		return false;
+
 	const std::string modspriority_filename(GetFilename());
 
 	auto fp = FileSystem::OpenManagedCFile(modspriority_filename.c_str(), "rb+");
@@ -77,6 +94,9 @@ bool PriorityList::GetPriority(std::string modname, int& priority)
 }
 bool PriorityList::GetModName(int priority, std::string& modname)
 {
+	if (!CacheFileValidation())
+		return false;
+
 	const std::string modspriority_filename(GetFilename());
 
 	auto fp = FileSystem::OpenManagedCFile(modspriority_filename.c_str(), "rb+");
@@ -109,6 +129,9 @@ bool PriorityList::GetModName(int priority, std::string& modname)
 }
 bool PriorityList::Save(std::vector<std::string> priority_list)
 {
+	if (!CacheFileValidation())
+		return false;
+
 	const std::string modspriority_filename(GetFilename());
 	FileSystem::DeleteFilePath(modspriority_filename.c_str());
 

pcsx2/mods/PriorityList.h

@@ -2,6 +2,7 @@
 namespace PriorityList
 {
 	static std::string GetFilename();
+	static bool CacheFileValidation();
 	std::vector<std::string> Get();
 	bool GetPriority(std::string modname, int& priority);
 	bool GetModName(int priority, std::string& modname);