/* $NetBSD: prompt.c,v 1.26.8.1 2017/07/23 14:41:26 snj 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 1.26.8.1 2017/07/23 14:41:26 snj Exp $"); #endif #endif /* not lint && not SCCSID */ /* * prompt.c: Prompt printing functions */ #include #include "el.h" static wchar_t *prompt_default(EditLine *); static wchar_t *prompt_default_r(EditLine *); /* prompt_default(): * Just a default prompt, in case the user did not provide one */ static wchar_t * /*ARGSUSED*/ prompt_default(EditLine *el __attribute__((__unused__))) { static wchar_t a[3] = L"? "; return a; } /* prompt_default_r(): * Just a default rprompt, in case the user did not provide one */ static wchar_t * /*ARGSUSED*/ prompt_default_r(EditLine *el __attribute__((__unused__))) { static wchar_t a[1] = L""; return a; } /* prompt_print(): * Print the prompt and update the prompt position. */ libedit_private void prompt_print(EditLine *el, int op) { el_prompt_t *elp; wchar_t *p; 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) { wchar_t *litstart = ++p; while (*p && *p != elp->p_ignore) p++; if (!*p || !p[1]) { // XXX: We lose the last literal break; } re_putliteral(el, litstart, p++); continue; } 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 */ libedit_private 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 */ libedit_private void /*ARGSUSED*/ prompt_end(EditLine *el __attribute__((__unused__))) { } /* prompt_set(): * Install a prompt printing function */ libedit_private int prompt_set(EditLine *el, el_pfunc_t prf, wchar_t 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 */ libedit_private int prompt_get(EditLine *el, el_pfunc_t *prf, wchar_t *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; }