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