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/*
* cook - file construction tool
* Copyright (C) 1997, 2001, 2003, 2004, 2006, 2007 Peter Miller;
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
*
* MANIFEST: functions to manipulate stars
*/
#include <common/ac/stdio.h>
#include <common/ac/string.h>
#include <common/ac/time.h>
#include <common/fflush_slow.h>
#include <common/page.h>
#include <common/progname.h>
#include <common/quit.h>
#include <common/star.h>
#include <common/trace.h> /* for assert */
static int previous;
static int star_flag;
static int star_col;
static time_t star_time;
/*
* NAME
* star
*
* SYNOPSIS
* void star(void);
*
* DESCRIPTION
* The star function is used to emit a progress star, if they are
* enabled.
*/
void
star(void)
{
star_as_specified('*');
}
/*
* NAME
* star_as_specified
*
* SYNOPSIS
* void star_as_specified(int);
*
* DESCRIPTION
* The star_as_specified function is used to emit the given
* character as a progress star, if they are enabled.
*/
void
star_as_specified(int c)
{
int immediate;
time_t now;
static int page_width;
if (!star_flag)
return;
if (!page_width)
page_width = page_width_get() - 1;
if (c & STAR_IMMEDIATE)
{
c &= ~STAR_IMMEDIATE;
immediate = 1;
}
else
immediate = 0;
immediate |= (c != previous);
time(&now);
if (now < star_time && !immediate)
return;
previous = c;
if (!star_col)
{
char *progname;
progname = progname_get();
fprintf(stderr, "%s: ", progname);
star_col = strlen(progname) + 2;
}
fputc(c, stderr);
star_col++;
if (star_col >= page_width)
{
fputc('\n', stderr);
star_col = 0;
}
fflush_slowly(stderr);
star_time = now + 1;
}
/*
* NAME
* star_eoln
*
* SYNOPSIS
* void star_eoln(void);
*
* DESCRIPTION
* The star_eoln function is used to end a line of progress stars,
* if any have been issued. This should be done prior to any
* output.
*/
void
star_eoln(void)
{
time_t now;
if (!star_flag)
return;
if (star_col)
{
fputc('\n', stderr);
star_col = 0;
fflush_slowly(stderr);
}
time(&now);
star_time = now + 1;
}
/*
* NAME
* star_sync
*
* SYNOPSIS
* void star_sync(void);
*
* DESCRIPTION
* The star_eoln function is used to end a line of progress stars,
* if any have been issued. It also introduces a delay of 5
* seconds, rather than the defalt 1 second. This should be done
* prior to any echoed command.
*/
void
star_sync(void)
{
time_t when;
if (!star_flag)
return;
if (star_col)
{
fputc('\n', stderr);
star_col = 0;
fflush(stderr);
}
time(&when);
when += 5;
if (when > star_time)
star_time = when;
}
/*
* NAME
* star_quit_handler
*
* SYNOPSIS
* void star_quit_handler(void);
*
* DESCRIPTION
* The star_quit_handler function is used to clean up any trailing
* lines of stars at quit() time.
*
* RETURNS
*/
static void
star_quit_handler(void)
{
star_flag = 0;
if (star_col)
{
fputc('\n', stderr);
star_col = 0;
}
}
/*
* NAME
* star_enable
*
* SYNOPSIS
* void star_enable(void);
*
* DESCRIPTION
* The star_enable function is used to turn on the emitting of
* progress stars. The default it silence.
*/
void
star_enable(void)
{
if (star_flag)
return;
star_flag = 1;
quit_handler(star_quit_handler);
trace(("enabled\n"));
}
/*
* NAME
* star_bang
*
* SYNOPSIS
* void star_bang(void);
*
* DESCRIPTION
* The star function is used to emit a iminus as a progress star,
* if they are enabled. (Silent command execution indicator.)
*/
void
star_bang(void)
{
star_as_specified('-');
}
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