1 /* $OpenBSD: prompt.c,v 1.3 1997/03/14 05:12:57 millert Exp $ */ 2 /* $NetBSD: prompt.c,v 1.2 1997/01/11 06:48:04 lukem Exp $ */ 3 4 /*- 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Christos Zoulas of Cornell University. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 */ 39 40 #if !defined(lint) && !defined(SCCSID) 41 #if 0 42 static char sccsid[] = "@(#)prompt.c 8.1 (Berkeley) 6/4/93"; 43 #else 44 static char rcsid[] = "$OpenBSD: prompt.c,v 1.3 1997/03/14 05:12:57 millert Exp $"; 45 #endif 46 #endif /* not lint && not SCCSID */ 47 48 /* 49 * prompt.c: Prompt printing functions 50 */ 51 #include "sys.h" 52 #include <stdio.h> 53 #include "el.h" 54 55 private char *prompt_default __P((EditLine *)); 56 57 /* prompt_default(): 58 * Just a default prompt, in case the user did not provide one 59 */ 60 private char * 61 /*ARGSUSED*/ 62 prompt_default(el) 63 EditLine *el; 64 { 65 static char a[3] = { '?', ' ', '\0' }; 66 return a; 67 } 68 69 70 /* prompt_print(): 71 * Print the prompt and update the prompt position. 72 * We use an array of integers in case we want to pass 73 * literal escape sequences in the prompt and we want a 74 * bit to flag them 75 */ 76 protected void 77 prompt_print(el) 78 EditLine *el; 79 { 80 char *p = (*el->el_prompt.p_func)(el); 81 while (*p) 82 re_putc(el, *p++); 83 84 el->el_prompt.p_pos.v = el->el_refresh.r_cursor.v; 85 el->el_prompt.p_pos.h = el->el_refresh.r_cursor.h; 86 87 } /* end prompt_print */ 88 89 90 /* prompt_init(): 91 * Initialize the prompt stuff 92 */ 93 protected int 94 prompt_init(el) 95 EditLine *el; 96 { 97 el->el_prompt.p_func = prompt_default; 98 el->el_prompt.p_pos.v = 0; 99 el->el_prompt.p_pos.h = 0; 100 return 0; 101 } /* end prompt_init */ 102 103 104 /* prompt_end(): 105 * Clean up the prompt stuff 106 */ 107 protected void 108 /*ARGSUSED*/ 109 prompt_end(el) 110 EditLine *el; 111 { 112 } /* end prompt_end */ 113 114 115 /* prompt_set(): 116 * Install a prompt printing function 117 */ 118 protected int 119 prompt_set(el, prf) 120 EditLine *el; 121 el_pfunc_t prf; 122 { 123 if (prf == NULL) 124 el->el_prompt.p_func = prompt_default; 125 else 126 el->el_prompt.p_func = prf; 127 el->el_prompt.p_pos.v = 0; 128 el->el_prompt.p_pos.h = 0; 129 return 0; 130 } /* end prompt_set */ 131