prompt.c revision 148834
11573Srgrimes/*- 21573Srgrimes * Copyright (c) 1992, 1993 31573Srgrimes * The Regents of the University of California. All rights reserved. 41573Srgrimes * 51573Srgrimes * This code is derived from software contributed to Berkeley by 61573Srgrimes * Christos Zoulas of Cornell University. 71573Srgrimes * 81573Srgrimes * Redistribution and use in source and binary forms, with or without 91573Srgrimes * modification, are permitted provided that the following conditions 101573Srgrimes * are met: 111573Srgrimes * 1. Redistributions of source code must retain the above copyright 121573Srgrimes * notice, this list of conditions and the following disclaimer. 131573Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141573Srgrimes * notice, this list of conditions and the following disclaimer in the 151573Srgrimes * documentation and/or other materials provided with the distribution. 16148834Sstefanf * 3. Neither the name of the University nor the names of its contributors 171573Srgrimes * may be used to endorse or promote products derived from this software 181573Srgrimes * without specific prior written permission. 191573Srgrimes * 201573Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 211573Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 221573Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 231573Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 241573Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 251573Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 261573Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 271573Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 281573Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 291573Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 301573Srgrimes * SUCH DAMAGE. 3184260Sobrien * 32148834Sstefanf * $NetBSD: prompt.c,v 1.11 2003/08/07 16:44:32 agc Exp $ 331573Srgrimes */ 341573Srgrimes 351573Srgrimes#if !defined(lint) && !defined(SCCSID) 361573Srgrimesstatic char sccsid[] = "@(#)prompt.c 8.1 (Berkeley) 6/4/93"; 371573Srgrimes#endif /* not lint && not SCCSID */ 3884260Sobrien#include <sys/cdefs.h> 3984260Sobrien__FBSDID("$FreeBSD: head/lib/libedit/prompt.c 148834 2005-08-07 20:55:59Z stefanf $"); 401573Srgrimes 411573Srgrimes/* 421573Srgrimes * prompt.c: Prompt printing functions 431573Srgrimes */ 441573Srgrimes#include "sys.h" 451573Srgrimes#include <stdio.h> 461573Srgrimes#include "el.h" 471573Srgrimes 4884260Sobrienprivate char *prompt_default(EditLine *); 4984260Sobrienprivate char *prompt_default_r(EditLine *); 501573Srgrimes 511573Srgrimes/* prompt_default(): 521573Srgrimes * Just a default prompt, in case the user did not provide one 531573Srgrimes */ 541573Srgrimesprivate char * 551573Srgrimes/*ARGSUSED*/ 56148834Sstefanfprompt_default(EditLine *el __unused) 571573Srgrimes{ 5884260Sobrien static char a[3] = {'?', ' ', '\0'}; 5984260Sobrien 6084260Sobrien return (a); 611573Srgrimes} 621573Srgrimes 631573Srgrimes 6484260Sobrien/* prompt_default_r(): 6584260Sobrien * Just a default rprompt, in case the user did not provide one 6684260Sobrien */ 6784260Sobrienprivate char * 6884260Sobrien/*ARGSUSED*/ 69148834Sstefanfprompt_default_r(EditLine *el __unused) 7084260Sobrien{ 7184260Sobrien static char a[1] = {'\0'}; 7284260Sobrien 7384260Sobrien return (a); 7484260Sobrien} 7584260Sobrien 7684260Sobrien 771573Srgrimes/* prompt_print(): 781573Srgrimes * Print the prompt and update the prompt position. 791573Srgrimes * We use an array of integers in case we want to pass 801573Srgrimes * literal escape sequences in the prompt and we want a 811573Srgrimes * bit to flag them 821573Srgrimes */ 831573Srgrimesprotected void 8484260Sobrienprompt_print(EditLine *el, int op) 851573Srgrimes{ 8684260Sobrien el_prompt_t *elp; 8784260Sobrien char *p; 881573Srgrimes 8984260Sobrien if (op == EL_PROMPT) 9084260Sobrien elp = &el->el_prompt; 9184260Sobrien else 9284260Sobrien elp = &el->el_rprompt; 9384260Sobrien p = (elp->p_func) (el); 9484260Sobrien while (*p) 9584260Sobrien re_putc(el, *p++, 1); 961573Srgrimes 9784260Sobrien elp->p_pos.v = el->el_refresh.r_cursor.v; 9884260Sobrien elp->p_pos.h = el->el_refresh.r_cursor.h; 9984260Sobrien} 1001573Srgrimes 1011573Srgrimes 1021573Srgrimes/* prompt_init(): 1031573Srgrimes * Initialize the prompt stuff 1041573Srgrimes */ 1058870Srgrimesprotected int 10684260Sobrienprompt_init(EditLine *el) 1071573Srgrimes{ 1081573Srgrimes 10984260Sobrien el->el_prompt.p_func = prompt_default; 11084260Sobrien el->el_prompt.p_pos.v = 0; 11184260Sobrien el->el_prompt.p_pos.h = 0; 11284260Sobrien el->el_rprompt.p_func = prompt_default_r; 11384260Sobrien el->el_rprompt.p_pos.v = 0; 11484260Sobrien el->el_rprompt.p_pos.h = 0; 11584260Sobrien return (0); 11684260Sobrien} 1171573Srgrimes 11884260Sobrien 1191573Srgrimes/* prompt_end(): 1201573Srgrimes * Clean up the prompt stuff 1211573Srgrimes */ 1221573Srgrimesprotected void 1238870Srgrimes/*ARGSUSED*/ 124148834Sstefanfprompt_end(EditLine *el __unused) 1251573Srgrimes{ 12684260Sobrien} 1271573Srgrimes 1281573Srgrimes 1291573Srgrimes/* prompt_set(): 1301573Srgrimes * Install a prompt printing function 1311573Srgrimes */ 1328870Srgrimesprotected int 13384260Sobrienprompt_set(EditLine *el, el_pfunc_t prf, int op) 1341573Srgrimes{ 13584260Sobrien el_prompt_t *p; 13684260Sobrien 13784260Sobrien if (op == EL_PROMPT) 13884260Sobrien p = &el->el_prompt; 13984260Sobrien else 14084260Sobrien p = &el->el_rprompt; 14184260Sobrien if (prf == NULL) { 14284260Sobrien if (op == EL_PROMPT) 14384260Sobrien p->p_func = prompt_default; 14484260Sobrien else 14584260Sobrien p->p_func = prompt_default_r; 14684260Sobrien } else 14784260Sobrien p->p_func = prf; 14884260Sobrien p->p_pos.v = 0; 14984260Sobrien p->p_pos.h = 0; 15084260Sobrien return (0); 15184260Sobrien} 15284260Sobrien 15384260Sobrien 15484260Sobrien/* prompt_get(): 15584260Sobrien * Retrieve the prompt printing function 15684260Sobrien */ 15784260Sobrienprotected int 15884260Sobrienprompt_get(EditLine *el, el_pfunc_t *prf, int op) 15984260Sobrien{ 16084260Sobrien 16184260Sobrien if (prf == NULL) 16284260Sobrien return (-1); 16384260Sobrien if (op == EL_PROMPT) 16484260Sobrien *prf = el->el_prompt.p_func; 16584260Sobrien else 16684260Sobrien *prf = el->el_rprompt.p_func; 16784260Sobrien return (0); 16884260Sobrien} 169