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121 lines
3.6 KiB
C
121 lines
3.6 KiB
C
/**
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* \file
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* <!--
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* This file is part of BeRTOS.
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*
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* Bertos 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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* As a special exception, you may use this file as part of a free software
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* library without restriction. Specifically, if other files instantiate
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* templates or use macros or inline functions from this file, or you compile
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* this file and link it with other files to produce an executable, this
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* file does not by itself cause the resulting executable to be covered by
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* the GNU General Public License. This exception does not however
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* invalidate any other reasons why the executable file might be covered by
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* the GNU General Public License.
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*
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* Copyright (C) 2004 Giovanni Bajo
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* Copyright (C) 2004 Develer S.r.l. (http://www.develer.com/)
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* All Rights Reserved.
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* -->
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*
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* \brief Line editing support with history
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*
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* This file implements a kernel for line editing through a terminal, with history of the typed lines.
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* Basic feature of this module:
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*
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* \li Abstracted from I/O. The user must provide hooks for getc and putc functions.
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* \li Basic support for ANSI escape sequences for input of special codes.
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* \li Support for command name completion (through a hook).
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*
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*
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* \author Giovanni Bajo <rasky@develer.com>
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*
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* $WIZ$ module_name = "readline"
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* $WIZ$ module_depends = "sprintf"
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*/
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#ifndef MWARE_READLINE_H
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#define MWARE_READLINE_H
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#include <cfg/compiler.h>
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#include <string.h>
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#define HISTORY_SIZE 32
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typedef int (*getc_hook)(void* user_data);
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typedef void (*putc_hook)(char ch, void* user_data);
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typedef const char* (*match_hook)(void* user_data, const char* word, int word_len);
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typedef void (*clear_hook)(void* user_data);
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struct RLContext
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{
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getc_hook get;
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void* get_param;
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putc_hook put;
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void* put_param;
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match_hook match;
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void* match_param;
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clear_hook clear;
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void* clear_param;
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const char* prompt;
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char real_history[HISTORY_SIZE];
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char* history;
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size_t history_pos;
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size_t line_pos;
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};
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INLINE void rl_init_ctx(struct RLContext *ctx)
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{
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memset(ctx, 0, sizeof(*ctx));
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ctx->history = ctx->real_history;
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}
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INLINE void rl_clear_history(struct RLContext *ctx)
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{
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memset(ctx->real_history, 0, sizeof(ctx->real_history));
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ctx->history_pos = 0;
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ctx->line_pos = ctx->history_pos;
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ctx->history = ctx->real_history;
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}
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INLINE void rl_sethook_get(struct RLContext* ctx, getc_hook get, void* get_param)
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{ ctx->get = get; ctx->get_param = get_param; }
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INLINE void rl_sethook_put(struct RLContext* ctx, putc_hook put, void* put_param)
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{ ctx->put = put; ctx->put_param = put_param; }
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INLINE void rl_sethook_match(struct RLContext* ctx, match_hook match, void* match_param)
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{ ctx->match = match; ctx->match_param = match_param; }
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INLINE void rl_sethook_clear(struct RLContext* ctx, clear_hook clear, void* clear_param)
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{ ctx->clear = clear; ctx->clear_param = clear_param; }
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INLINE void rl_setprompt(struct RLContext* ctx, const char* prompt)
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{ ctx->prompt = prompt; }
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const char* rl_readline(struct RLContext* ctx);
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void rl_refresh(struct RLContext* ctx);
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#endif /* MWARE_READLINE_H */
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