history keys

hk.c

static void _cli_history_up(void* a_ctx) {

	t_cli_ctx *ctx = (t_cli_ctx *)a_ctx;
	char prompt[12] = {0x00};

	if ((ctx->hhead != ctx->htail) && 
			strlen(ctx->history[ctx->hpos])) {
		memset(ctx->cmd, 0x00, CLI_CMD_BUFFER_SIZE);
		
		strcpy(ctx->cmd, ctx->history[ctx->hpos]);
		ctx->pos = strlen(ctx->cmd);

		if (!ctx->hpos)
			ctx->hpos = CLI_CMD_HISTORY_LEN - 1;
		else
			ctx->hpos--;

		snprintf(prompt, sizeof(prompt), "\r\n(%d/%d)",
			   	ctx->hpos, CLI_CMD_HISTORY_LEN);
	
		CLI_IO_OUTPUT(prompt, strlen(prompt));
		CLI_IO_OUTPUT(ctx->cmd, strlen(ctx->cmd));
	}
}

static void _cli_history_down(void* a_ctx) {
	t_cli_ctx *ctx = (t_cli_ctx *)a_ctx;
	char prompt[12] = {0x00};

	if ((ctx->hhead != ctx->htail) &&
			strlen(ctx->history[ctx->hpos])) {
		memset(ctx->cmd, 0x00, CLI_CMD_BUFFER_SIZE);
		
		ctx->hpos++;
		ctx->hpos %= CLI_CMD_HISTORY_LEN;

		strcpy(ctx->cmd, ctx->history[ctx->hpos]);
		ctx->pos = strlen(ctx->cmd);

		snprintf(prompt, sizeof(prompt), "\r\n(%d/%d)",
			   	ctx->hpos, CLI_CMD_HISTORY_LEN);
	
		CLI_IO_OUTPUT(prompt, strlen(prompt));
		CLI_IO_OUTPUT(ctx->cmd, strlen(ctx->cmd));
	}
}