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/* $OpenBSD: prompt.c,v 1.13 2016/04/11 21:17:29 schwarze Exp $ */ |
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/* $NetBSD: prompt.c,v 1.25 2016/04/11 18:56:31 christos 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. 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 "config.h" |
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/* |
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* prompt.c: Prompt printing functions |
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*/ |
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#include <stdio.h> |
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#include "el.h" |
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static wchar_t *prompt_default(EditLine *); |
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static wchar_t *prompt_default_r(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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static wchar_t * |
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/*ARGSUSED*/ |
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prompt_default(EditLine *el __attribute__((__unused__))) |
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{ |
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static wchar_t a[3] = L"? "; |
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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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static wchar_t * |
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/*ARGSUSED*/ |
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prompt_default_r(EditLine *el __attribute__((__unused__))) |
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{ |
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static wchar_t a[1] = L""; |
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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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*/ |
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protected void |
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prompt_print(EditLine *el, int op) |
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{ |
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el_prompt_t *elp; |
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wchar_t *p; |
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int ignore = 0; |
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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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if (elp->p_wide) |
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p = (*elp->p_func)(el); |
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else |
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p = ct_decode_string((char *)(void *)(*elp->p_func)(el), |
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&el->el_scratch); |
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for (; *p; p++) { |
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if (elp->p_ignore == *p) { |
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ignore = !ignore; |
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continue; |
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} |
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if (ignore) |
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terminal__putc(el, *p); |
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else |
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re_putc(el, *p, 1); |
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} |
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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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} |
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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(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_prompt.p_ignore = '\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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el->el_rprompt.p_ignore = '\0'; |
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return 0; |
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} |
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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(EditLine *el __attribute__((__unused__))) |
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{ |
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} |
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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(EditLine *el, el_pfunc_t prf, wchar_t c, int op, int wide) |
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{ |
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el_prompt_t *p; |
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✓✗ |
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if (op == EL_PROMPT || op == EL_PROMPT_ESC) |
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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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✗✓ |
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if (prf == NULL) { |
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if (op == EL_PROMPT || op == EL_PROMPT_ESC) |
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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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} |
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p->p_ignore = c; |
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p->p_pos.v = 0; |
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p->p_pos.h = 0; |
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p->p_wide = wide; |
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return 0; |
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} |
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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(EditLine *el, el_pfunc_t *prf, wchar_t *c, int op) |
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{ |
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el_prompt_t *p; |
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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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p = &el->el_prompt; |
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else |
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p = &el->el_rprompt; |
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if (prf) |
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*prf = p->p_func; |
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if (c) |
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*c = p->p_ignore; |
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return 0; |
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} |