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Diffstat (limited to 'lib/libedit/prompt.c')
| -rw-r--r-- | lib/libedit/prompt.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/lib/libedit/prompt.c b/lib/libedit/prompt.c new file mode 100644 index 000000000000..10ba70b2baca --- /dev/null +++ b/lib/libedit/prompt.c @@ -0,0 +1,172 @@ +/*- + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. 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. + * + * $NetBSD: prompt.c,v 1.7 2000/09/04 22:06:31 lukem Exp $ + */ + +#if !defined(lint) && !defined(SCCSID) +static char sccsid[] = "@(#)prompt.c 8.1 (Berkeley) 6/4/93"; +#endif /* not lint && not SCCSID */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * prompt.c: Prompt printing functions + */ +#include "sys.h" +#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) +{ + 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) +{ + static char a[1] = {'\0'}; + + return (a); +} + + +/* prompt_print(): + * Print the prompt and update the prompt position. + * We use an array of integers in case we want to pass + * literal escape sequences in the prompt and we want a + * bit to flag them + */ +protected void +prompt_print(EditLine *el, int op) +{ + el_prompt_t *elp; + char *p; + + if (op == EL_PROMPT) + elp = &el->el_prompt; + else + elp = &el->el_rprompt; + p = (elp->p_func) (el); + while (*p) + 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_rprompt.p_func = prompt_default_r; + el->el_rprompt.p_pos.v = 0; + el->el_rprompt.p_pos.h = 0; + return (0); +} + + +/* prompt_end(): + * Clean up the prompt stuff + */ +protected void +/*ARGSUSED*/ +prompt_end(EditLine *el) +{ +} + + +/* prompt_set(): + * Install a prompt printing function + */ +protected int +prompt_set(EditLine *el, el_pfunc_t prf, int op) +{ + el_prompt_t *p; + + if (op == EL_PROMPT) + p = &el->el_prompt; + else + p = &el->el_rprompt; + if (prf == NULL) { + if (op == EL_PROMPT) + p->p_func = prompt_default; + else + p->p_func = prompt_default_r; + } else + p->p_func = prf; + p->p_pos.v = 0; + p->p_pos.h = 0; + return (0); +} + + +/* prompt_get(): + * Retrieve the prompt printing function + */ +protected int +prompt_get(EditLine *el, el_pfunc_t *prf, int op) +{ + + if (prf == NULL) + return (-1); + if (op == EL_PROMPT) + *prf = el->el_prompt.p_func; + else + *prf = el->el_rprompt.p_func; + return (0); +} |