history handling

history.c

static void _cli_history_add(t_cli_ctx *a_ctx) {	

	if (a_ctx->hhead == CLI_CMD_HISTORY_LEN &&
			a_ctx->htail == CLI_CMD_HISTORY_LEN) {
		a_ctx->hhead = 0;
		a_ctx->htail = 0;
	}
	else {
		a_ctx->hhead++;
		a_ctx->hhead %= CLI_CMD_HISTORY_LEN;
		a_ctx->hpos = a_ctx->hhead;

		if (a_ctx->htail >= a_ctx->hhead) {
			a_ctx->htail = (a_ctx->hhead + 1) % CLI_CMD_HISTORY_LEN;
		}
	}

	memset(a_ctx->history[a_ctx->hhead], 0x00, CLI_CMD_BUFFER_SIZE);
	strcpy(a_ctx->history[a_ctx->hhead], a_ctx->cmd);
}


static void _cli_reinterpret_cmd(t_cli_ctx *a_ctx, unsigned char a_response) {
	switch(a_response) {
		case E_CMD_NOT_FOUND: {
				char str[] = "\r\nCommand not found";
				CLI_IO_OUTPUT(str, strlen(str));
				_cli_history_add(a_ctx);
			}
			break;

		case E_CMD_TOO_SHORT: {
				char str[] = "\r\nCommand too short";
				CLI_IO_OUTPUT(str, strlen(str));
			}
			break;

		default:
			_cli_history_add(a_ctx);
			break;
	} // switch
}