52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
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/* MSPDebug - debugging tool for MSP430 MCUs
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* Copyright (C) 2009-2012 Daniel Beer
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef INPUT_H_
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#define INPUT_H_
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/* This defines the interface to an input module. The input module is
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* responsible for providing a way of fetching commands to be executed,
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* and a way of presenting yes/no questions to the user ("are you sure
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* you want to ...?").
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*/
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struct input_interface {
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/* Initialize/tear down the input subsystem. */
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int (*init)(void);
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void (*exit)(void);
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/* Read a command from the user into the supplied buffer. This
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* function returns 0 on success, -1 if an error occurs, and 1
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* if the end of input has been reached.
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*/
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int (*read_command)(char *buf, int max_len);
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/* Prompt the user before performing a destructive operation.
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* The question should be phrased so that "yes" confirms that
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* the operation should proceed.
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*
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* Returns 1 for no (abort), 0 for yes (continue), and -1 if an
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* error occurs.
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*/
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int (*prompt_abort)(const char *message);
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};
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/* Variable which holds a reference to the selected input module. */
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extern const struct input_interface *input_module;
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#endif
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