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