1 files changed, 117 insertions, 0 deletions
diff --git a/NorthstarDLL/pdef.cpp b/NorthstarDLL/pdef.cpp
new file mode 100644
index 00000000..05fba710
--- /dev/null
+++ b/NorthstarDLL/pdef.cpp
@@ -0,0 +1,117 @@
+#include "pch.h"
+#include "modmanager.h"
+#include "filesystem.h"
+#include "pdef.h"
+
+#include <map>
+#include <sstream>
+#include <fstream>
+
+void ModManager::BuildPdef()
+{
+	spdlog::info("Building persistent_player_data_version_231.pdef...");
+
+	fs::path MOD_PDEF_PATH = fs::path(GetCompiledAssetsPath() / MOD_PDEF_SUFFIX);
+
+	fs::remove(MOD_PDEF_PATH);
+	std::string pdef = R2::ReadVPKOriginalFile(VPK_PDEF_PATH);
+
+	for (Mod& mod : m_LoadedMods)
+	{
+		if (!mod.m_bEnabled || !mod.Pdiff.size())
+			continue;
+
+		// this code probably isn't going to be pretty lol
+		// refer to shared/pjson.js for an actual okish parser of the pdiff format
+		// but pretty much, $ENUM_ADD blocks define members added to preexisting enums
+		// $PROP_START ends the custom stuff, and from there it's just normal props we append to the pdef
+
+		std::map<std::string, std::vector<std::string>> enumAdds;
+
+		// read pdiff
+		bool inEnum = false;
+		bool inProp = false;
+		std::string currentEnum;
+		std::string currentLine;
+		std::istringstream pdiffStream(mod.Pdiff);
+
+		while (std::getline(pdiffStream, currentLine))
+		{
+			if (inProp)
+			{
+				// just append to pdef here
+				pdef += currentLine;
+				pdef += '\n';
+				continue;
+			}
+
+			// trim leading whitespace
+			size_t start = currentLine.find_first_not_of(" \n\r\t\f\v");
+			size_t end = currentLine.find("//");
+			if (end == std::string::npos)
+				end = currentLine.size() - 1; // last char
+
+			if (!currentLine.size() || !currentLine.compare(start, 2, "//"))
+				continue;
+
+			if (inEnum)
+			{
+				if (!currentLine.compare(start, 9, "$ENUM_END"))
+					inEnum = false;
+				else
+					enumAdds[currentEnum].push_back(currentLine); // only need to push_back current line, if there's syntax errors then game
+																  // pdef parser will handle them
+			}
+			else if (!currentLine.compare(start, 9, "$ENUM_ADD"))
+			{
+				inEnum = true;
+				currentEnum = currentLine.substr(start + 10 /*$ENUM_ADD + 1*/, currentLine.size() - end - (start + 10));
+				enumAdds.insert(std::make_pair(currentEnum, std::vector<std::string>()));
+			}
+			else if (!currentLine.compare(start, 11, "$PROP_START"))
+			{
+				inProp = true;
+				pdef += "\n// $PROP_START ";
+				pdef += mod.Name;
+				pdef += "\n";
+			}
+		}
+
+		// add new members to preexisting enums
+		// note: this code could 100% be messed up if people put //$ENUM_START comments and the like
+		// could make it protect against this, but honestly not worth atm
+		for (auto enumAdd : enumAdds)
+		{
+			std::string addStr;
+			for (std::string enumMember : enumAdd.second)
+			{
+				addStr += enumMember;
+				addStr += '\n';
+			}
+
+			// start of enum we're adding to
+			std::string startStr = "$ENUM_START ";
+			startStr += enumAdd.first;
+
+			// insert enum values into enum
+			size_t insertIdx = pdef.find("$ENUM_END", pdef.find(startStr));
+			pdef.reserve(addStr.size());
+			pdef.insert(insertIdx, addStr);
+		}
+	}
+
+	fs::create_directories(MOD_PDEF_PATH.parent_path());
+
+	std::ofstream writeStream(MOD_PDEF_PATH, std::ios::binary);
+	writeStream << pdef;
+	writeStream.close();
+
+	ModOverrideFile overrideFile;
+	overrideFile.m_pOwningMod = nullptr;
+	overrideFile.m_Path = VPK_PDEF_PATH;
+
+	if (m_ModFiles.find(VPK_PDEF_PATH) == m_ModFiles.end())
+		m_ModFiles.insert(std::make_pair(VPK_PDEF_PATH, overrideFile));
+	else
+		m_ModFiles[VPK_PDEF_PATH] = overrideFile;
+}