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Some sample code provided by @shaun

	FileStat stat;
	if (playdate->file->stat("pdxinfo", &stat)) {
		playdate->system->logToConsole("%s", playdate->file->geterr());
		return;
	}
	SDFile* f = playdate->file->open("pdxinfo", kFileRead);
	char* buf = playdate->system->realloc(NULL, stat.size+1);
	playdate->file->read(f, buf, stat.size);
	playdate->file->close(f);
	playdate->system->logToConsole("%s", buf);
	playdate->system->realloc(buf, 0);