diff options
Diffstat (limited to 'src/prompt.c')
| -rw-r--r-- | src/prompt.c | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/src/prompt.c b/src/prompt.c new file mode 100644 index 0000000..48b2d27 --- /dev/null +++ b/src/prompt.c @@ -0,0 +1,199 @@ +/* $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; +} |