112 lines
3.3 KiB
C
112 lines
3.3 KiB
C
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/*-
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* Copyright (c) 2013-2014 Devin Teske <dteske@FreeBSD.org>
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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__FBSDID("$FreeBSD$");
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#include <curses.h>
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#include <dialog.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include "dialog_util.h"
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#include "status.h"
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/* static globals */
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static char *status_buf = NULL;
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static int status_bufsize = -1;
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static int status_row;
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static int status_width;
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/*
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* Print a `one-liner' status message at the bottom of the screen. Messages are
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* trimmed to fit within the console length (ANSI coloring not accounted for).
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*/
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void
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status_printf(const char *fmt, ...)
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{
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int n, attrs;
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chtype color = dlg_color_pair(dlg_color_table[BUTTON_ACTIVE_ATTR].fg,
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dlg_color_table[SCREEN_ATTR].bg) | A_BOLD;
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va_list args;
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status_row = tty_maxrows() - 1;
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status_width = tty_maxcols();
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/* NULL is a special convention meaning "erase the old stuff" */
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if (fmt == NULL) {
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move(status_row, 0);
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clrtoeol();
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return;
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}
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/* Resize buffer if terminal width is greater */
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if ((status_width + 1) > status_bufsize) {
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status_buf = realloc(status_buf, status_width + 1);
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if (status_buf == NULL) {
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status_bufsize = -1;
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return;
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}
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status_bufsize = status_width + 1;
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}
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/* Print the message within a space-filled buffer */
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memset(status_buf, ' ', status_width);
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va_start(args, fmt);
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n = vsnprintf(status_buf, status_width + 1, fmt, args);
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va_end(args);
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/* If vsnprintf(3) produced less bytes than the maximum, change the
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* implicitly-added NUL-terminator into a space and terminate at max */
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if (n < status_width) {
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status_buf[n] = ' ';
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status_buf[status_width] = '\0';
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}
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/* Print text in screen bg, button active fg, and bold */
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attrs = getattrs(stdscr);
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attrset(color);
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mvaddstr(status_row, 0, status_buf);
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attrset(attrs);
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/* Seat the cursor over the last character at absolute lower-right */
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move(status_row, status_width - 1);
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refresh();
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}
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/*
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* Free allocated items initialized by status_printf()
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*/
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void
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status_free(void)
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{
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if (status_buf != NULL) {
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free(status_buf);
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status_buf = NULL;
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}
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}
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