Function fb_msg_format

src/common/classes/MsgPrint.cpp:359–399

Lookup and format message. Return as much of formatted string as fits in caller's buffer.

// Lookup and format message.  Return as much of formatted string as fits in caller's buffer.
int fb_msg_format(void* handle, USHORT facility, USHORT number, unsigned int bsize, TEXT* buffer,
	const MsgFormat::SafeArg& arg)
{
	int total_msg = 0;
	char msg[BUFFER_SMALL] = "";
	const int n = gds__msg_lookup(handle, facility, number, sizeof(msg), msg, NULL);

	if (n > 0 && unsigned(n) < sizeof(msg))
	{
		// Shameful bridge, gds__msg_format emulation for old format messages.
		if (strchr(msg, '%'))
		{
			const TEXT* rep[5];
			arg.dump(rep, 5);
			total_msg = fb_utils::snprintf(buffer, bsize, msg, rep[0], rep[1], rep[2], rep[3], rep[4]);
		}
		else
			total_msg = MsgPrint(buffer, bsize, msg, arg);
	}
	else
	{
		Firebird::string s;
		s.printf("can't format message %d:%d -- ", facility, number);
		if (n == -1)
			s += "message text not found";
		else if (n == -2)
		{
			s += "message file ";
			s += fb_utils::getPrefix(Firebird::IConfigManager::DIR_MSG, MSG_FILE).ToString();
			s += " not found";
		}
		else
		{
			fb_utils::snprintf(buffer, bsize, "message system code %d", n);
			s += buffer;
		}
		total_msg = s.copyTo(buffer, bsize);
	}

	return (n > 0 ? total_msg : -total_msg);
}