| /* $NetBSD: prompt.c,v 1.20 2011/07/29 15:16:33 christos Exp $ */ |
| |
| /*- |
| * Copyright (c) 1992, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * This code is derived from software contributed to Berkeley by |
| * Christos Zoulas of Cornell University. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #if !defined(lint) && !defined(SCCSID) |
| #if 0 |
| static char sccsid[] = "@(#)prompt.c 8.1 (Berkeley) 6/4/93"; |
| #else |
| __RCSID("$NetBSD: prompt.c,v 1.20 2011/07/29 15:16:33 christos Exp $"); |
| #endif |
| #endif /* not lint && not SCCSID */ |
| |
| /* |
| * prompt.c: Prompt printing functions |
| */ |
| #include <stdio.h> |
| #include "el.h" |
| |
| private Char *prompt_default(EditLine *); |
| private Char *prompt_default_r(EditLine *); |
| |
| /* prompt_default(): |
| * Just a default prompt, in case the user did not provide one |
| */ |
| private Char * |
| /*ARGSUSED*/ |
| prompt_default(EditLine *el __attribute__((__unused__))) |
| { |
| static Char a[3] = {'?', ' ', '\0'}; |
| |
| return a; |
| } |
| |
| |
| /* prompt_default_r(): |
| * Just a default rprompt, in case the user did not provide one |
| */ |
| private Char * |
| /*ARGSUSED*/ |
| prompt_default_r(EditLine *el __attribute__((__unused__))) |
| { |
| static Char a[1] = {'\0'}; |
| |
| return a; |
| } |
| |
| |
| /* prompt_print(): |
| * Print the prompt and update the prompt position. |
| */ |
| protected void |
| prompt_print(EditLine *el, int op) |
| { |
| el_prompt_t *elp; |
| Char *p; |
| int ignore = 0; |
| |
| if (op == EL_PROMPT) |
| elp = &el->el_prompt; |
| else |
| elp = &el->el_rprompt; |
| |
| if (elp->p_wide) |
| p = (*elp->p_func)(el); |
| else |
| p = ct_decode_string((char *)(void *)(*elp->p_func)(el), |
| &el->el_scratch); |
| |
| for (; *p; p++) { |
| if (elp->p_ignore == *p) { |
| ignore = !ignore; |
| continue; |
| } |
| if (ignore) |
| terminal__putc(el, *p); |
| else |
| re_putc(el, *p, 1); |
| } |
| |
| elp->p_pos.v = el->el_refresh.r_cursor.v; |
| elp->p_pos.h = el->el_refresh.r_cursor.h; |
| } |
| |
| |
| /* prompt_init(): |
| * Initialize the prompt stuff |
| */ |
| protected int |
| prompt_init(EditLine *el) |
| { |
| |
| el->el_prompt.p_func = prompt_default; |
| el->el_prompt.p_pos.v = 0; |
| el->el_prompt.p_pos.h = 0; |
| el->el_prompt.p_ignore = '\0'; |
| el->el_rprompt.p_func = prompt_default_r; |
| el->el_rprompt.p_pos.v = 0; |
| el->el_rprompt.p_pos.h = 0; |
| el->el_rprompt.p_ignore = '\0'; |
| return 0; |
| } |
| |
| |
| /* prompt_end(): |
| * Clean up the prompt stuff |
| */ |
| protected void |
| /*ARGSUSED*/ |
| prompt_end(EditLine *el __attribute__((__unused__))) |
| { |
| } |
| |
| |
| /* prompt_set(): |
| * Install a prompt printing function |
| */ |
| protected int |
| prompt_set(EditLine *el, el_pfunc_t prf, Char c, int op, int wide) |
| { |
| el_prompt_t *p; |
| |
| if (op == EL_PROMPT || op == EL_PROMPT_ESC) |
| p = &el->el_prompt; |
| else |
| p = &el->el_rprompt; |
| |
| if (prf == NULL) { |
| if (op == EL_PROMPT || op == EL_PROMPT_ESC) |
| p->p_func = prompt_default; |
| else |
| p->p_func = prompt_default_r; |
| } else { |
| p->p_func = prf; |
| } |
| |
| p->p_ignore = c; |
| |
| p->p_pos.v = 0; |
| p->p_pos.h = 0; |
| p->p_wide = wide; |
| |
| return 0; |
| } |
| |
| |
| /* prompt_get(): |
| * Retrieve the prompt printing function |
| */ |
| protected int |
| prompt_get(EditLine *el, el_pfunc_t *prf, Char *c, int op) |
| { |
| el_prompt_t *p; |
| |
| if (prf == NULL) |
| return -1; |
| |
| if (op == EL_PROMPT) |
| p = &el->el_prompt; |
| else |
| p = &el->el_rprompt; |
| |
| if (prf) |
| *prf = p->p_func; |
| if (c) |
| *c = p->p_ignore; |
| |
| return 0; |
| } |