Added system path stuff on Windows

Fixed typo in image loading

code/os/impl/windows/filesystem.c

@@ -132,3 +132,78 @@ FS_List FS_PathList(M_Arena *arena, Str8 path) {
 
 	return result;
 }
+
+Str8 FS_SystemPath(M_Arena *arena, FS_SystemPathType path) {
+	Str8 result = { 0 };
+
+	M_TempScope(1, &arena) {
+		switch (path) {
+			case FS_SYSTEM_PATH_EXE: {
+				U64 offset = M_ArenaOffset(temp.arena);
+
+				DWORD err, nchars;
+
+				DWORD  nSize      = 1024;
+				LPWSTR lpFilename = M_ArenaPush(temp.arena, WCHAR, .count = nSize, .flags = M_ARENA_NO_ZERO);
+
+				for (;;) {
+					nchars = GetModuleFileNameW(0, lpFilename, nSize);
+
+					err = GetLastError();
+					if (err != ERROR_INSUFFICIENT_BUFFER) {
+						break;
+					}
+
+					M_ArenaPop(temp.arena, offset);
+
+					nSize      *= 2;
+					lpFilename  = M_ArenaPush(temp.arena, WCHAR, .count = nSize, .flags = M_ARENA_NO_ZERO);
+				}
+
+				if (err == ERROR_SUCCESS) {
+					while (lpFilename[nchars] != '\\') { nchars -= 1; }
+					lpFilename[nchars] = 0;
+
+					result = Win32_MultiByteStr(arena, lpFilename);
+				}
+			}
+			break;
+
+			case FS_SYSTEM_PATH_WORKING: {
+				DWORD nSize = GetCurrentDirectoryW(0, 0);
+
+				if (nSize != 0) {
+					LPWSTR lpBuffer = M_ArenaPush(temp.arena, WCHAR, .count = nSize, .flags = M_ARENA_NO_ZERO);
+					GetCurrentDirectoryW(nSize, lpBuffer);
+
+					result = Win32_MultiByteStr(arena, lpBuffer);
+				}
+			}
+			break;
+
+			case FS_SYSTEM_PATH_USER: {
+				LPWSTR wpath;
+				HRESULT hResult = SHGetKnownFolderPath(&FOLDERID_RoamingAppData, 0, 0, &wpath);
+				if (hResult == S_OK) {
+					result = Win32_MultiByteStr(arena, wpath);
+					CoTaskMemFree(wpath);
+				}
+			}
+			break;
+
+			case FS_SYSTEM_PATH_TEMP: {
+				DWORD nSize     = MAX_PATH + 1;
+				LPWSTR lpBuffer = M_ArenaPush(temp.arena, WCHAR, .count = nSize);
+
+				DWORD nchars = GetTempPathW(nSize, lpBuffer);
+				if (nchars != 0) {
+					lpBuffer[nchars - 1] = 0; // Strip trailing backslash
+					result = Win32_MultiByteStr(arena, lpBuffer);
+				}
+			}
+			break;
+		}
+	}
+
+	return result;
+}