From fa7fc343a0e444da72938fad58d219cf52228976 Mon Sep 17 00:00:00 2001
From: Jonathan Bradley <jcb@pikum.xyz>
Date: Thu, 21 Dec 2023 17:44:03 -0500
Subject: plugin checkpoint - multiple plugins and collision callbacks

---
 src/plugins.cpp | 74 ++++++++++++++++++++++++++++++++++++++-------------------
 1 file changed, 50 insertions(+), 24 deletions(-)

(limited to 'src/plugins.cpp')

diff --git a/src/plugins.cpp b/src/plugins.cpp
index bfd2e9b..5b0b817 100644
--- a/src/plugins.cpp
+++ b/src/plugins.cpp
@@ -1,22 +1,24 @@
 
-#include "macros.hpp"
 #include "plugins.hpp"
 
-#include <cstdio>
-#include <dlfcn.h>
+#include "array.hpp"
+#include "macros.hpp"
 
-PKEPluginInterface pkePlugin{};
+#include <cassert>
+#include <cstdio>
+#include <cstring>
 
-void *loadedPlugin = nullptr;
+#ifdef WIN32
+	// TODO
+#else
+	#include <dlfcn.h>
+#endif
 
-void Pke_UpdatePlugin(const PKEPluginInterface &plugin) {
-	pkePlugin.OnInit = plugin.OnInit;
-	pkePlugin.OnTick = plugin.OnTick;
-	pkePlugin.OnTeardown = plugin.OnTeardown;
-	pkePlugin.OnImGuiRender = plugin.OnImGuiRender;
-}
+DynArray<PKEPluginInterface> LoadedPkePlugins;
+PkeArray<PkeCallback> pkePluginCallbacks;
+PkeArray<CallbackSignature> sortedSignatures;
 
-void Pke_LoadPlugin(const char *path) {
+void PkePlugin_Load(const char *path) {
 	if (path == nullptr || path == CAFE_BABE(void)) {
 		return;
 	}
@@ -33,19 +35,43 @@ void Pke_LoadPlugin(const char *path) {
 		dlclose(extension);
 		return;
 	}
-	Pke_UpdatePlugin(*interface);
-	loadedPlugin = interface;
+	interface->pluginHandle = extension;
+	LoadedPkePlugins.Push(*interface);
+}
+
+PkeCallback *PkePlugin_FindSignature(const CallbackSignature &sig) {
+	for (long i = 0; i < pkePluginCallbacks.next; ++i) {
+		if (strncmp(sig, pkePluginCallbacks.data[i].name, 16) == 0) {
+			return &pkePluginCallbacks.data[i];
+		}
+	}
+	return nullptr;
 }
 
-void Pke_UnloadPlugin() {
-	pkePlugin = {
-		.OnInit = nullptr,
-		.OnTick= nullptr,
-		.OnTeardown= nullptr,
-		.OnImGuiRender= nullptr,
-	};
-	if (loadedPlugin != nullptr && loadedPlugin != CAFE_BABE(void)) {
-		dlclose(loadedPlugin);
-		loadedPlugin = CAFE_BABE(void);
+void PkePlugin_SetSignatureFunc(PkeCallback *sig) {
+	assert(sig != nullptr);
+	if (sig->name[0] == '\0') {
+		return;
+	}
+	auto *registeredSig = PkePlugin_FindSignature(sig->name);
+	if (registeredSig == nullptr) {
+		fprintf(stdout, "[WARN] [PkePlugin_SetSignatureFunc] Failed to find configured signature: '%s'\n", sig->name);
+		return;
+	}
+	sig->func = registeredSig->func;
+}
+
+int pstrncmp(const void* a, const void* b)
+{
+	return strncmp(static_cast<const CallbackSignature *>(a)[0], static_cast<const CallbackSignature *>(b)[0], 16);
+}
+CallbackSignature *PkePlugin_GetSortedSignatures(long &count) {
+	if (sortedSignatures.next != pkePluginCallbacks.next) {
+		while (sortedSignatures.next != pkePluginCallbacks.next) {
+			PkeArray_Add(&sortedSignatures, pkePluginCallbacks.data[sortedSignatures.next].name);
+		}
+		qsort(sortedSignatures.data, sortedSignatures.next, sizeof(CallbackSignature), pstrncmp);
 	}
+	count = sortedSignatures.next;
+	return sortedSignatures.data;
 }
-- 
cgit v1.2.3