prompt.c revision 8870
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. 161573Srgrimes * 3. All advertising materials mentioning features or use of this software 171573Srgrimes * must display the following acknowledgement: 181573Srgrimes * This product includes software developed by the University of 191573Srgrimes * California, Berkeley and its contributors. 201573Srgrimes * 4. Neither the name of the University nor the names of its contributors 211573Srgrimes * may be used to endorse or promote products derived from this software 221573Srgrimes * without specific prior written permission. 231573Srgrimes * 241573Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 251573Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 261573Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 271573Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 281573Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 291573Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 301573Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 311573Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 321573Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 331573Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 341573Srgrimes * SUCH DAMAGE. 351573Srgrimes */ 361573Srgrimes 371573Srgrimes#if !defined(lint) && !defined(SCCSID) 381573Srgrimesstatic char sccsid[] = "@(#)prompt.c 8.1 (Berkeley) 6/4/93"; 391573Srgrimes#endif /* not lint && not SCCSID */ 401573Srgrimes 411573Srgrimes/* 421573Srgrimes * prompt.c: Prompt printing functions 431573Srgrimes */ 441573Srgrimes#include "sys.h" 451573Srgrimes#include <stdio.h> 461573Srgrimes#include "el.h" 471573Srgrimes 481573Srgrimesprivate char *prompt_default __P((EditLine *)); 491573Srgrimes 501573Srgrimes/* prompt_default(): 511573Srgrimes * Just a default prompt, in case the user did not provide one 521573Srgrimes */ 531573Srgrimesprivate char * 541573Srgrimes/*ARGSUSED*/ 551573Srgrimesprompt_default(el) 561573Srgrimes EditLine *el; 571573Srgrimes{ 581573Srgrimes static char a[3] = { '?', ' ', '\0' }; 591573Srgrimes return a; 601573Srgrimes} 611573Srgrimes 621573Srgrimes 631573Srgrimes/* prompt_print(): 641573Srgrimes * Print the prompt and update the prompt position. 651573Srgrimes * We use an array of integers in case we want to pass 661573Srgrimes * literal escape sequences in the prompt and we want a 671573Srgrimes * bit to flag them 681573Srgrimes */ 691573Srgrimesprotected void 701573Srgrimesprompt_print(el) 711573Srgrimes EditLine *el; 721573Srgrimes{ 731573Srgrimes char *p = (*el->el_prompt.p_func)(el); 741573Srgrimes while (*p) 751573Srgrimes re_putc(el, *p++); 761573Srgrimes 771573Srgrimes el->el_prompt.p_pos.v = el->el_refresh.r_cursor.v; 781573Srgrimes el->el_prompt.p_pos.h = el->el_refresh.r_cursor.h; 791573Srgrimes 801573Srgrimes} /* end prompt_print */ 811573Srgrimes 821573Srgrimes 831573Srgrimes/* prompt_init(): 841573Srgrimes * Initialize the prompt stuff 851573Srgrimes */ 868870Srgrimesprotected int 871573Srgrimesprompt_init(el) 881573Srgrimes EditLine *el; 891573Srgrimes{ 901573Srgrimes el->el_prompt.p_func = prompt_default; 911573Srgrimes el->el_prompt.p_pos.v = 0; 921573Srgrimes el->el_prompt.p_pos.h = 0; 931573Srgrimes return 0; 941573Srgrimes} /* end prompt_init */ 951573Srgrimes 961573Srgrimes 971573Srgrimes/* prompt_end(): 981573Srgrimes * Clean up the prompt stuff 991573Srgrimes */ 1001573Srgrimesprotected void 1018870Srgrimes/*ARGSUSED*/ 1021573Srgrimesprompt_end(el) 1031573Srgrimes EditLine *el; 1041573Srgrimes{ 1051573Srgrimes} /* end prompt_end */ 1061573Srgrimes 1071573Srgrimes 1081573Srgrimes/* prompt_set(): 1091573Srgrimes * Install a prompt printing function 1101573Srgrimes */ 1118870Srgrimesprotected int 1121573Srgrimesprompt_set(el, prf) 1131573Srgrimes EditLine *el; 1141573Srgrimes el_pfunc_t prf; 1151573Srgrimes{ 1161573Srgrimes if (prf == NULL) 1171573Srgrimes el->el_prompt.p_func = prompt_default; 1181573Srgrimes else 1191573Srgrimes el->el_prompt.p_func = prf; 1201573Srgrimes el->el_prompt.p_pos.v = 0; 1211573Srgrimes el->el_prompt.p_pos.h = 0; 1221573Srgrimes return 0; 1231573Srgrimes} /* end prompt_set */ 124