Exemplo n.º 1
0
/*ARGSUSED*/
void
db_examine_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif)
{
	if (modif[0] != '\0')
		db_strlcpy(db_examine_format, modif, sizeof(db_examine_format));

	if (count == -1)
		count = 1;

	db_examine((db_addr_t)addr, db_examine_format, count);
}
Exemplo n.º 2
0
void
db_command(struct db_command **last_cmdp, struct db_command *cmd_table)
{
	struct db_command	*cmd;
	int		t;
	char		modif[TOK_STRING_SIZE];
	db_expr_t	addr, count;
	boolean_t	have_addr = FALSE;
	int		result;

	t = db_read_token();
	if (t == tEOL) {
	    /* empty line repeats last command, at 'next' */
	    cmd = *last_cmdp;
	    addr = (db_expr_t)db_next;
	    have_addr = FALSE;
	    count = 1;
	    modif[0] = '\0';
	}
	else if (t == tEXCL) {
	    db_fncall(0, 0, 0, NULL);
	    return;
	}
	else if (t != tIDENT) {
	    db_printf("?\n");
	    db_flush_lex();
	    return;
	}
	else {
	    /*
	     * Search for command
	     */
	    while (cmd_table) {
		result = db_cmd_search(db_tok_string,
				       cmd_table,
				       &cmd);
		switch (result) {
		    case CMD_NONE:
			db_printf("No such command\n");
			db_flush_lex();
			return;
		    case CMD_AMBIGUOUS:
			db_printf("Ambiguous\n");
			db_flush_lex();
			return;
		    default:
			break;
		}
		if ((cmd_table = cmd->more) != 0) {
		    t = db_read_token();
		    if (t != tIDENT) {
			db_cmd_list(cmd_table);
			db_flush_lex();
			return;
		    }
		}
	    }

	    if ((cmd->flag & CS_OWN) == 0) {
		/*
		 * Standard syntax:
		 * command [/modifier] [addr] [,count]
		 */
		t = db_read_token();
		if (t == tSLASH) {
		    t = db_read_token();
		    if (t != tIDENT) {
			db_printf("Bad modifier\n");
			db_flush_lex();
			return;
		    }
		    db_strlcpy(modif, db_tok_string, sizeof(modif));
		}
		else {
		    db_unread_token(t);
		    modif[0] = '\0';
		}

		if (db_expression(&addr)) {
		    db_dot = (db_addr_t) addr;
		    db_last_addr = db_dot;
		    have_addr = TRUE;
		}
		else {
		    addr = (db_expr_t) db_dot;
		    have_addr = FALSE;
		}
		t = db_read_token();
		if (t == tCOMMA) {
		    if (!db_expression(&count)) {
			db_printf("Count missing\n");
			db_flush_lex();
			return;
		    }
		}
		else {
		    db_unread_token(t);
		    count = -1;
		}
		if ((cmd->flag & CS_MORE) == 0) {
		    db_skip_to_eol();
		}
	    }
	}
	*last_cmdp = cmd;
	if (cmd != 0) {
	    /*
	     * Execute the command.
	     */
	    (*cmd->fcn)(addr, have_addr, count, modif);

	    if (cmd->flag & CS_SET_DOT) {
		/*
		 * If command changes dot, set dot to
		 * previous address displayed (if 'ed' style).
		 */
		if (db_ed_style) {
		    db_dot = db_prev;
		}
		else {
		    db_dot = db_next;
		}
	    }
	    else {
		/*
		 * If command does not change dot,
		 * set 'next' location to be the same.
		 */
		db_next = db_dot;
	    }
	}
}