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. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $NetBSD: prompt.c,v 1.11 2003/08/07 16:44:32 agc Exp $ 33 */ 34 35#if !defined(lint) && !defined(SCCSID) 36static char sccsid[] = "@(#)prompt.c 8.1 (Berkeley) 6/4/93"; 37#endif /* not lint && not SCCSID */ 38#include <sys/cdefs.h> 39__FBSDID("$FreeBSD$"); 40 41/* 42 * prompt.c: Prompt printing functions 43 */ 44#include "sys.h" 45#include <stdio.h> 46#include "el.h" 47 48private char *prompt_default(EditLine *); 49private char *prompt_default_r(EditLine *); 50 51/* prompt_default(): 52 * Just a default prompt, in case the user did not provide one 53 */ 54private char * 55/*ARGSUSED*/ 56prompt_default(EditLine *el __unused) 57{ 58 static char a[3] = {'?', ' ', '\0'}; 59 60 return (a); 61} 62 63 64/* prompt_default_r(): 65 * Just a default rprompt, in case the user did not provide one 66 */ 67private char * 68/*ARGSUSED*/ 69prompt_default_r(EditLine *el __unused) 70{ 71 static char a[1] = {'\0'}; 72 73 return (a); 74} 75 76 77/* prompt_print(): 78 * Print the prompt and update the prompt position. 79 * We use an array of integers in case we want to pass 80 * literal escape sequences in the prompt and we want a 81 * bit to flag them 82 */ 83protected void 84prompt_print(EditLine *el, int op) 85{ 86 el_prompt_t *elp; 87 char *p; 88 int ignore = 0; 89 90 if (op == EL_PROMPT) 91 elp = &el->el_prompt; 92 else 93 elp = &el->el_rprompt; 94 95 for (p = (*elp->p_func)(el); *p; p++) { 96 if (elp->p_ignore == *p) { 97 ignore = !ignore; 98 continue; 99 } 100 if (ignore) 101 term__putc(el, *p); 102 else 103 re_putc(el, *p, 1); 104 } 105 106 elp->p_pos.v = el->el_refresh.r_cursor.v; 107 elp->p_pos.h = el->el_refresh.r_cursor.h; 108} 109 110 111/* prompt_init(): 112 * Initialize the prompt stuff 113 */ 114protected int 115prompt_init(EditLine *el) 116{ 117 118 el->el_prompt.p_func = prompt_default; 119 el->el_prompt.p_pos.v = 0; 120 el->el_prompt.p_pos.h = 0; 121 el->el_prompt.p_ignore = '\0'; 122 el->el_rprompt.p_func = prompt_default_r; 123 el->el_rprompt.p_pos.v = 0; 124 el->el_rprompt.p_pos.h = 0; 125 el->el_rprompt.p_ignore = '\0'; 126 return 0; 127} 128 129 130/* prompt_end(): 131 * Clean up the prompt stuff 132 */ 133protected void 134/*ARGSUSED*/ 135prompt_end(EditLine *el __unused) 136{ 137} 138 139 140/* prompt_set(): 141 * Install a prompt printing function 142 */ 143protected int 144prompt_set(EditLine *el, el_pfunc_t prf, char c, int op) 145{ 146 el_prompt_t *p; 147 148 if (op == EL_PROMPT || op == EL_PROMPT_ESC) 149 p = &el->el_prompt; 150 else 151 p = &el->el_rprompt; 152 153 if (prf == NULL) { 154 if (op == EL_PROMPT || op == EL_PROMPT_ESC) 155 p->p_func = prompt_default; 156 else 157 p->p_func = prompt_default_r; 158 } else 159 p->p_func = prf; 160 161 p->p_ignore = c; 162 163 p->p_pos.v = 0; 164 p->p_pos.h = 0; 165 166 return 0; 167} 168 169 170/* prompt_get(): 171 * Retrieve the prompt printing function 172 */ 173protected int 174prompt_get(EditLine *el, el_pfunc_t *prf, char *c, int op) 175{ 176 el_prompt_t *p; 177 178 if (prf == NULL) 179 return -1; 180 181 if (op == EL_PROMPT) 182 p = &el->el_prompt; 183 else 184 p = &el->el_rprompt; 185 186 *prf = el->el_rprompt.p_func; 187 188 if (c) 189 *c = p->p_ignore; 190 191 return 0; 192} 193