prompt.c 4.11 KB
Newer Older
unknown's avatar
unknown committed
1
/*	$NetBSD: prompt.c,v 1.11 2003/08/07 16:44:32 agc Exp $	*/
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

/*-
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Christos Zoulas of Cornell University.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
unknown's avatar
unknown committed
18
 * 3. Neither the name of the University nor the names of its contributors
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

35 36 37 38 39 40 41
#include "config.h"
#if !defined(lint) && !defined(SCCSID)
#if 0
static char sccsid[] = "@(#)prompt.c	8.1 (Berkeley) 6/4/93";
#else
#endif
#endif /* not lint && not SCCSID */
42 43 44 45 46 47 48 49 50 51 52 53 54 55 56

/*
 * prompt.c: Prompt printing functions
 */
#include <stdio.h>
#include "el.h"

private char	*prompt_default(EditLine *);
private char	*prompt_default_r(EditLine *);

/* prompt_default():
 *	Just a default prompt, in case the user did not provide one
 */
private char *
/*ARGSUSED*/
unknown's avatar
unknown committed
57
prompt_default(EditLine *el __attribute__((__unused__)))
58 59 60 61 62 63 64 65 66 67 68 69
{
	static char a[3] = {'?', ' ', '\0'};

	return (a);
}


/* prompt_default_r():
 *	Just a default rprompt, in case the user did not provide one
 */
private char *
/*ARGSUSED*/
unknown's avatar
unknown committed
70
prompt_default_r(EditLine *el __attribute__((__unused__)))
71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124
{
	static char a[1] = {'\0'};

	return (a);
}


/* prompt_print():
 *	Print the prompt and update the prompt position.
 *	We use an array of integers in case we want to pass
 * 	literal escape sequences in the prompt and we want a
 *	bit to flag them
 */
protected void
prompt_print(EditLine *el, int op)
{
	el_prompt_t *elp;
	char *p;

	if (op == EL_PROMPT)
		elp = &el->el_prompt;
	else
		elp = &el->el_rprompt;
	p = (elp->p_func) (el);
	while (*p)
		re_putc(el, *p++, 1);

	elp->p_pos.v = el->el_refresh.r_cursor.v;
	elp->p_pos.h = el->el_refresh.r_cursor.h;
}


/* prompt_init():
 *	Initialize the prompt stuff
 */
protected int
prompt_init(EditLine *el)
{

	el->el_prompt.p_func = prompt_default;
	el->el_prompt.p_pos.v = 0;
	el->el_prompt.p_pos.h = 0;
	el->el_rprompt.p_func = prompt_default_r;
	el->el_rprompt.p_pos.v = 0;
	el->el_rprompt.p_pos.h = 0;
	return (0);
}


/* prompt_end():
 *	Clean up the prompt stuff
 */
protected void
/*ARGSUSED*/
unknown's avatar
unknown committed
125
prompt_end(EditLine *el __attribute__((__unused__)))
126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169
{
}


/* prompt_set():
 *	Install a prompt printing function
 */
protected int
prompt_set(EditLine *el, el_pfunc_t prf, int op)
{
	el_prompt_t *p;

	if (op == EL_PROMPT)
		p = &el->el_prompt;
	else
		p = &el->el_rprompt;
	if (prf == NULL) {
		if (op == EL_PROMPT)
			p->p_func = prompt_default;
		else
			p->p_func = prompt_default_r;
	} else
		p->p_func = prf;
	p->p_pos.v = 0;
	p->p_pos.h = 0;
	return (0);
}


/* prompt_get():
 *	Retrieve the prompt printing function
 */
protected int
prompt_get(EditLine *el, el_pfunc_t *prf, int op)
{

	if (prf == NULL)
		return (-1);
	if (op == EL_PROMPT)
		*prf = el->el_prompt.p_func;
	else
		*prf = el->el_rprompt.p_func;
	return (0);
}