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 #if !defined(lint) && !defined(SCCSID)
38 static char sccsid[] = "@(#)prompt.c 8.1 (Berkeley) 6/4/93";
39 #endif /* not lint && not SCCSID */
40
41 /*
42 * prompt.c: Prompt printing functions
43 */
44 #include "sys.h"
45 #include <stdio.h>
46 #include "el.h"
47
48 private char *prompt_default __P((EditLine *));
49
50 /* prompt_default():
51 * Just a default prompt, in case the user did not provide one
52 */
53 private char *
54 /*ARGSUSED*/
prompt_default(el)55 prompt_default(el)
56 EditLine *el;
57 {
58 static char a[3] = { '?', ' ', '\0' };
59 return a;
60 }
61
62
63 /* prompt_print():
64 * Print the prompt and update the prompt position.
65 * We use an array of integers in case we want to pass
66 * literal escape sequences in the prompt and we want a
67 * bit to flag them
68 */
69 protected void
prompt_print(el)70 prompt_print(el)
71 EditLine *el;
72 {
73 char *p = (*el->el_prompt.p_func)(el);
74 while (*p)
75 re_putc(el, *p++);
76
77 el->el_prompt.p_pos.v = el->el_refresh.r_cursor.v;
78 el->el_prompt.p_pos.h = el->el_refresh.r_cursor.h;
79
80 } /* end prompt_print */
81
82
83 /* prompt_init():
84 * Initialize the prompt stuff
85 */
86 protected int
prompt_init(el)87 prompt_init(el)
88 EditLine *el;
89 {
90 el->el_prompt.p_func = prompt_default;
91 el->el_prompt.p_pos.v = 0;
92 el->el_prompt.p_pos.h = 0;
93 return 0;
94 } /* end prompt_init */
95
96
97 /* prompt_end():
98 * Clean up the prompt stuff
99 */
100 protected void
101 /*ARGSUSED*/
prompt_end(el)102 prompt_end(el)
103 EditLine *el;
104 {
105 } /* end prompt_end */
106
107
108 /* prompt_set():
109 * Install a prompt printing function
110 */
111 protected int
prompt_set(el,prf)112 prompt_set(el, prf)
113 EditLine *el;
114 el_pfunc_t prf;
115 {
116 if (prf == NULL)
117 el->el_prompt.p_func = prompt_default;
118 else
119 el->el_prompt.p_func = prf;
120 el->el_prompt.p_pos.v = 0;
121 el->el_prompt.p_pos.h = 0;
122 return 0;
123 } /* end prompt_set */
124