From e1fbc1a86d39bdf445b360c7cb41f4946de73203 Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Sat, 29 Jun 2024 01:02:05 +0300
Subject: [PATCH] standalone: some ppf loading

mostly for testing, like game.chd.ppf would load game.chd and apply
game.chd.ppf patch
---
 frontend/menu.c    | 19 +++++++++++++++++--
 libpcsxcore/misc.c |  2 +-
 libpcsxcore/ppf.c  | 43 +++++++++++++++++++++++--------------------
 libpcsxcore/ppf.h  |  2 +-
 4 files changed, 42 insertions(+), 24 deletions(-)

diff --git a/frontend/menu.c b/frontend/menu.c
index 39f0a697..eb3237e3 100644
--- a/frontend/menu.c
+++ b/frontend/menu.c
@@ -40,6 +40,7 @@
 #include "../libpcsxcore/cdrom.h"
 #include "../libpcsxcore/cdriso.h"
 #include "../libpcsxcore/cheat.h"
+#include "../libpcsxcore/ppf.h"
 #include "../libpcsxcore/new_dynarec/new_dynarec.h"
 #include "../plugins/dfsound/spu_config.h"
 #include "psemu_plugin_defs.h"
@@ -740,7 +741,7 @@ static const char *filter_exts[] = {
 	#ifdef HAVE_CHD
 	"chd",
 	#endif
-	"bz",  "znx", "pbp", "cbn", NULL
+	"bz",  "znx", "pbp", "cbn", "ppf", NULL
 };
 
 // rrrr rggg gggb bbbb
@@ -2157,6 +2158,18 @@ static int run_exe(void)
 static int run_cd_image(const char *fname)
 {
 	int autoload_state = g_autostateld_opt;
+	size_t fname_len = strlen(fname);
+	const char *ppfname = NULL;
+	char fname2[256];
+
+	// simle ppf handling, like game.chd.ppf
+	if (4 < fname_len && fname_len < sizeof(fname2)
+	    && strcasecmp(fname + fname_len - 4, ".ppf") == 0) {
+		memcpy(fname2, fname, fname_len - 4);
+		fname2[fname_len - 4] = 0;
+		ppfname = fname;
+		fname = fname2;
+	}
 
 	ready_to_go = 0;
 	reload_plugins(fname);
@@ -2170,6 +2183,8 @@ static int run_cd_image(const char *fname)
 		menu_update_msg("unsupported/invalid CD image");
 		return -1;
 	}
+	if (ppfname)
+		BuildPPFCache(ppfname);
 
 	SysReset();
 
@@ -2185,7 +2200,7 @@ static int run_cd_image(const char *fname)
 
 	if (autoload_state) {
 		unsigned int newest = 0;
-		int time, slot, newest_slot = -1;
+		int time = 0, slot, newest_slot = -1;
 
 		for (slot = 0; slot < 10; slot++) {
 			if (emu_check_save_file(slot, &time)) {
diff --git a/libpcsxcore/misc.c b/libpcsxcore/misc.c
index 47a32cce..aafe5221 100644
--- a/libpcsxcore/misc.c
+++ b/libpcsxcore/misc.c
@@ -466,7 +466,7 @@ int CheckCdrom() {
 	
 	Apply_Hacks_Cdrom();
 
-	BuildPPFCache();
+	BuildPPFCache(NULL);
 
 	return 0;
 }
diff --git a/libpcsxcore/ppf.c b/libpcsxcore/ppf.c
index f37687cc..6a88e053 100644
--- a/libpcsxcore/ppf.c
+++ b/libpcsxcore/ppf.c
@@ -181,7 +181,7 @@ static void AddToPPF(s32 ladr, s32 pos, s32 anz, unsigned char *ppfmem) {
 	}
 }
 
-void BuildPPFCache() {
+void BuildPPFCache(const char *fname) {
 	FILE			*ppffile;
 	char			buffer[12];
 	char			method, undo = 0, blockcheck = 0;
@@ -196,23 +196,25 @@ void BuildPPFCache() {
 
 	if (CdromId[0] == '\0') return;
 
-	// Generate filename in the format of SLUS_123.45
-	buffer[0] = toupper(CdromId[0]);
-	buffer[1] = toupper(CdromId[1]);
-	buffer[2] = toupper(CdromId[2]);
-	buffer[3] = toupper(CdromId[3]);
-	buffer[4] = '_';
-	buffer[5] = CdromId[4];
-	buffer[6] = CdromId[5];
-	buffer[7] = CdromId[6];
-	buffer[8] = '.';
-	buffer[9] = CdromId[7];
-	buffer[10] = CdromId[8];
-	buffer[11] = '\0';
-
-	sprintf(szPPF, "%s%s", Config.PatchesDir, buffer);
-
-	ppffile = fopen(szPPF, "rb");
+	if (!fname) {
+		// Generate filename in the format of SLUS_123.45
+		buffer[0] = toupper(CdromId[0]);
+		buffer[1] = toupper(CdromId[1]);
+		buffer[2] = toupper(CdromId[2]);
+		buffer[3] = toupper(CdromId[3]);
+		buffer[4] = '_';
+		buffer[5] = CdromId[4];
+		buffer[6] = CdromId[5];
+		buffer[7] = CdromId[6];
+		buffer[8] = '.';
+		buffer[9] = CdromId[7];
+		buffer[10] = CdromId[8];
+		buffer[11] = '\0';
+
+		sprintf(szPPF, "%s%s", Config.PatchesDir, buffer);
+		fname = szPPF;
+	}
+	ppffile = fopen(fname, "rb");
 	if (ppffile == NULL) return;
 
 	memset(buffer, 0, 5);
@@ -220,7 +222,7 @@ void BuildPPFCache() {
 		goto fail_io;
 
 	if (strcmp(buffer, "PPF") != 0) {
-		SysPrintf(_("Invalid PPF patch: %s.\n"), szPPF);
+		SysPrintf(_("Invalid PPF patch: %s.\n"), fname);
 		fclose(ppffile);
 		return;
 	}
@@ -346,7 +348,8 @@ void BuildPPFCache() {
 
 	FillPPFCache(); // build address array
 
-	SysPrintf(_("Loaded PPF %d.0 patch: %s.\n"), method + 1, szPPF);
+	SysPrintf(_("Loaded PPF %d.0 patch: %s.\n"), method + 1, fname);
+	return;
 
 fail_io:
 #ifndef NDEBUG
diff --git a/libpcsxcore/ppf.h b/libpcsxcore/ppf.h
index a1b14751..e646e554 100644
--- a/libpcsxcore/ppf.h
+++ b/libpcsxcore/ppf.h
@@ -23,7 +23,7 @@
 extern "C" {
 #endif
 
-void BuildPPFCache();
+void BuildPPFCache(const char *fname);
 void FreePPFCache();
 void CheckPPFCache(unsigned char *pB, unsigned char m, unsigned char s, unsigned char f);
 
-- 
2.39.5