prompt.c revision 84201 
1/*-
2 * Copyright (c) 1992, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Christos Zoulas of Cornell University.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#include <sys/cdefs.h>
38__FBSDID("$FreeBSD: head/lib/libedit/prompt.c 84201 2001-09-30 21:21:36Z dillon $");
39#if !defined(lint) && !defined(SCCSID)
40static char sccsid[] = "@(#)prompt.c	8.1 (Berkeley) 6/4/93";
41#endif /* not lint && not SCCSID */
42
43/*
44 * prompt.c: Prompt printing functions
45 */
46#include "sys.h"
47#include <stdio.h>
48#include "el.h"
49
50private char *prompt_default	__P((EditLine *));
51
52/* prompt_default():
53 *	Just a default prompt, in case the user did not provide one
54 */
55private char *
56/*ARGSUSED*/
57prompt_default(el)
58    EditLine *el;
59{
60    static char a[3] = { '?', ' ', '\0' };
61    return a;
62}
63
64
65/* prompt_print():
66 *	Print the prompt and update the prompt position.
67 *	We use an array of integers in case we want to pass
68 * 	literal escape sequences in the prompt and we want a
69 *	bit to flag them
70 */
71protected void
72prompt_print(el)
73    EditLine *el;
74{
75    char *p = (*el->el_prompt.p_func)(el);
76    while (*p)
77	re_putc(el, *p++);
78
79    el->el_prompt.p_pos.v = el->el_refresh.r_cursor.v;
80    el->el_prompt.p_pos.h = el->el_refresh.r_cursor.h;
81
82} /* end prompt_print */
83
84
85/* prompt_init():
86 *	Initialize the prompt stuff
87 */
88protected int
89prompt_init(el)
90    EditLine *el;
91{
92    el->el_prompt.p_func = prompt_default;
93    el->el_prompt.p_pos.v = 0;
94    el->el_prompt.p_pos.h = 0;
95    return 0;
96} /* end prompt_init */
97
98
99/* prompt_end():
100 *	Clean up the prompt stuff
101 */
102protected void
103/*ARGSUSED*/
104prompt_end(el)
105    EditLine *el;
106{
107} /* end prompt_end */
108
109
110/* prompt_set():
111 *	Install a prompt printing function
112 */
113protected int
114prompt_set(el, prf)
115    EditLine *el;
116    el_pfunc_t prf;
117{
118    if (prf == NULL)
119	el->el_prompt.p_func = prompt_default;
120    else
121	el->el_prompt.p_func = prf;
122    el->el_prompt.p_pos.v = 0;
123    el->el_prompt.p_pos.h = 0;
124    return 0;
125} /* end prompt_set */
126