509864fa8f
I wrote for tcsh(1) three years ago.
- implement EL_RPROMPT, which allows a setting/getting of a function which
returns a string to be used as the right-side prompt.
- improve HISTORY and AUTHORS sections in editline(3).
- bump shlib minor version for EL_RPROMPT.
XXX: due to an implementation issue, the rprompt has a 1 space gap before the
edge of the logical screen. editline's logical screen is 1 space less
than the full screen width, so there's a 2 space gap between the rprompt
and the right end of the physical screen. i'm not concerned about this.
183 lines
4.6 KiB
C
183 lines
4.6 KiB
C
/* $NetBSD: prompt.c,v 1.6 1999/11/12 01:05:07 lukem Exp $ */
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/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Christos Zoulas of Cornell University.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if !defined(lint) && !defined(SCCSID)
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#if 0
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static char sccsid[] = "@(#)prompt.c 8.1 (Berkeley) 6/4/93";
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#else
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__RCSID("$NetBSD: prompt.c,v 1.6 1999/11/12 01:05:07 lukem Exp $");
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#endif
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#endif /* not lint && not SCCSID */
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/*
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* prompt.c: Prompt printing functions
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*/
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#include "sys.h"
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#include <stdio.h>
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#include "el.h"
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private char *prompt_default __P((EditLine *));
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private char *prompt_default_r __P((EditLine *));
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/* prompt_default():
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* Just a default prompt, in case the user did not provide one
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*/
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private char *
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/*ARGSUSED*/
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prompt_default(el)
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EditLine *el;
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{
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static char a[3] = { '?', ' ', '\0' };
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return a;
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}
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/* prompt_default_r():
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* Just a default rprompt, in case the user did not provide one
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*/
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private char *
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/*ARGSUSED*/
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prompt_default_r(el)
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EditLine *el;
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{
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static char a[1] = { '\0' };
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return a;
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}
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/* prompt_print():
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* Print the prompt and update the prompt position.
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* We use an array of integers in case we want to pass
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* literal escape sequences in the prompt and we want a
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* bit to flag them
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*/
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protected void
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prompt_print(el, op)
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EditLine *el;
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int op;
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{
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el_prompt_t *elp;
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char *p;
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if (op == EL_PROMPT)
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elp = &el->el_prompt;
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else
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elp = &el->el_rprompt;
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p = (elp->p_func)(el);
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while (*p)
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re_putc(el, *p++);
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elp->p_pos.v = el->el_refresh.r_cursor.v;
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elp->p_pos.h = el->el_refresh.r_cursor.h;
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} /* end prompt_print */
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/* prompt_init():
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* Initialize the prompt stuff
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*/
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protected int
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prompt_init(el)
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EditLine *el;
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{
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el->el_prompt.p_func = prompt_default;
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el->el_prompt.p_pos.v = 0;
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el->el_prompt.p_pos.h = 0;
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el->el_rprompt.p_func = prompt_default_r;
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el->el_rprompt.p_pos.v = 0;
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el->el_rprompt.p_pos.h = 0;
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return 0;
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} /* end prompt_init */
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/* prompt_end():
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* Clean up the prompt stuff
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*/
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protected void
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/*ARGSUSED*/
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prompt_end(el)
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EditLine *el;
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{
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} /* end prompt_end */
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/* prompt_set():
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* Install a prompt printing function
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*/
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protected int
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prompt_set(el, prf, op)
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EditLine *el;
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el_pfunc_t prf;
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int op;
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{
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el_prompt_t *p;
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if (op == EL_PROMPT)
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p = &el->el_prompt;
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else
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p = &el->el_rprompt;
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if (prf == NULL) {
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if (op == EL_PROMPT)
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p->p_func = prompt_default;
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else
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p->p_func = prompt_default_r;
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} else
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p->p_func = prf;
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p->p_pos.v = 0;
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p->p_pos.h = 0;
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return 0;
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} /* end prompt_set */
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/* prompt_get():
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* Retrieve the prompt printing function
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*/
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protected int
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prompt_get(el, prf, op)
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EditLine *el;
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el_pfunc_t *prf;
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int op;
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{
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if (prf == NULL)
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return -1;
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if (op == EL_PROMPT)
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*prf = el->el_prompt.p_func;
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else
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*prf = el->el_rprompt.p_func;
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return 0;
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} /* end prompt_get */
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