1 /* $OpenBSD: prompt.c,v 1.6 2003/06/02 20:18:40 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. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #if !defined(lint) && !defined(SCCSID) 37 #if 0 38 static char sccsid[] = "@(#)prompt.c 8.1 (Berkeley) 6/4/93"; 39 #else 40 static const char rcsid[] = "$OpenBSD: prompt.c,v 1.6 2003/06/02 20:18:40 millert Exp $"; 41 #endif 42 #endif /* not lint && not SCCSID */ 43 44 /* 45 * prompt.c: Prompt printing functions 46 */ 47 #include "sys.h" 48 #include <stdio.h> 49 #include "el.h" 50 51 private char *prompt_default(EditLine *); 52 53 /* prompt_default(): 54 * Just a default prompt, in case the user did not provide one 55 */ 56 private char * 57 /*ARGSUSED*/ 58 prompt_default(el) 59 EditLine *el; 60 { 61 static char a[3] = { '?', ' ', '\0' }; 62 return a; 63 } 64 65 66 /* prompt_print(): 67 * Print the prompt and update the prompt position. 68 * We use an array of integers in case we want to pass 69 * literal escape sequences in the prompt and we want a 70 * bit to flag them 71 */ 72 protected void 73 prompt_print(el) 74 EditLine *el; 75 { 76 char *p = (*el->el_prompt.p_func)(el); 77 while (*p) 78 re_putc(el, *p++); 79 80 el->el_prompt.p_pos.v = el->el_refresh.r_cursor.v; 81 el->el_prompt.p_pos.h = el->el_refresh.r_cursor.h; 82 83 } /* end prompt_print */ 84 85 86 /* prompt_init(): 87 * Initialize the prompt stuff 88 */ 89 protected int 90 prompt_init(el) 91 EditLine *el; 92 { 93 el->el_prompt.p_func = prompt_default; 94 el->el_prompt.p_pos.v = 0; 95 el->el_prompt.p_pos.h = 0; 96 return 0; 97 } /* end prompt_init */ 98 99 100 /* prompt_end(): 101 * Clean up the prompt stuff 102 */ 103 protected void 104 /*ARGSUSED*/ 105 prompt_end(el) 106 EditLine *el; 107 { 108 } /* end prompt_end */ 109 110 111 /* prompt_set(): 112 * Install a prompt printing function 113 */ 114 protected int 115 prompt_set(el, prf) 116 EditLine *el; 117 el_pfunc_t prf; 118 { 119 if (prf == NULL) 120 el->el_prompt.p_func = prompt_default; 121 else 122 el->el_prompt.p_func = prf; 123 el->el_prompt.p_pos.v = 0; 124 el->el_prompt.p_pos.h = 0; 125 return 0; 126 } /* end prompt_set */ 127