From: misomosi <misomosispi@gmail.com>
Date: Tue, 7 May 2024 00:53:35 +0000 (-0400)
Subject: Add basic logging
X-Git-Url: http://git.misomosispi.com/?a=commitdiff_plain;h=dbfcf27a1fd6a7e385c4ea9c3aed4bdf034b0934;p=pldh.git

Add basic logging
---

diff --git a/pld.h b/pld.h
index 0d597ba..bd4fa0e 100644
--- a/pld.h
+++ b/pld.h
@@ -7,32 +7,81 @@
 #define PLDTYPEOF(x) typeof(x)
 #endif
 
+static int PLD_Private_strlen(const char *s)
+{
+	int len = 0;
+	while (s[len++])
+		;
+	return len - 1;
+}
+
+static void PLD_Private_Log(const char *, const char *, int);
+
 #ifdef _WIN32
+
 #include <windows.h>
-static HMODULE PLD_LoadLibrary_wrapper(LPCSTR lpLibFileName)
+
+static void PLD_Private_WriteString(const char *s)
+{
+	DWORD dummy;
+	WriteFile(GetStdHandle(STD_ERROR_HANDLE), s, PLD_Private_strlen(s), &dummy, NULL);
+}
+
+static HMODULE PLD_Private_LoadLibrary_wrapper(LPCSTR lpLibFileName)
 {
 	HMODULE hModule = GetModuleHandleA(lpLibFileName);
 	if (hModule != NULL)
 		hModule = LoadLibraryA(lpLibFileName);
+	if (hModule == NULL)
+		PLD_Private_Log("Failed to load library!", lpLibFileName, GetLastError());
 	return hModule;
 }
-static FARPROC PLD_GetProcAddress_wrapper(HMODULE hModule, LPCSTR lpProcName)
+static FARPROC PLD_Private_GetProcAddress_wrapper(HMODULE hModule, LPCSTR lpProcName)
 {
 	FARPROC lpProc = GetProcAddress(hModule, lpProcName);
+	if (lpProc == NULL)
+		PLD_Private_Log("Failed to load procedure!", lpProcName, GetLastError());
 	return lpProc;
 }
 
 #define PLD(name) \
 	static HMODULE PLDH(void) { \
 		static HMODULE hModule = NULL; \
-		if (hModule == NULL) hModule =  PLD_LoadLibrary_wrapper(#name); \
+		if (hModule == NULL) hModule =  PLD_Private_LoadLibrary_wrapper(#name); \
 		return hModule; \
 	} \
 
-#define PFN(name) ((PLDTYPEOF(name))PLD_GetProcAddress_wrapper(PLDH(), #name))
+#define PFN(name) ((PLDTYPEOF(name))PLD_Private_GetProcAddress_wrapper(PLDH(), #name))
 
 #else
 #error POSIX Unimplemented!
 #endif
 
+static void PLD_Private_Log(const char *message, const char *name, int err)
+{
+	PLD_Private_WriteString(message);
+	PLD_Private_WriteString(" (");
+	PLD_Private_WriteString(name);
+	PLD_Private_WriteString(", err = ");
+
+	char itoastr[8 + 1];
+	char *iter = &itoastr[sizeof(itoastr) - 1];
+	*iter-- = 0;
+	for (int i = 0; i < sizeof(itoastr) - 1; i++) {
+		int digit = err & 0xf;
+		if (digit >= 9)
+			digit = 'A' + (digit - 10);
+		else
+			digit = '0' + digit;
+		*iter-- = digit;
+		err >>= 4;
+	}
+	PLD_Private_WriteString(++iter);
+	PLD_Private_WriteString(")\n");
+}
+
+#ifndef PLDLOG
+#define PLDLOG(message, name, err) PLD_Private_Log(message, name, err)
+#endif
+
 #endif // COOL_PLD_H