mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-15 10:17:20 +00:00
96331b7705
The contrib/top code is no longer maintained upstream (last pulled 16 years ago). The K&R-style followed by the code spews -Wimplicit-int and -Wreturn-type warnings, amongst others. This silences 131 warnings with as little modification as possible by adding necessary return types, definitions, headers, and header guards, and missing header includes. The 5 warnings that remain are due to undeclared ncurses references. I didn't include curses.h and term.h because there are several local functions and macros that conflict with those definitions. MFC after: 3 weeks Reviewed by: cem, ngie Submitted by: Randy Westlund <rwestlun@gmail.com> Differential Revision: https://reviews.freebsd.org/D6468
508 lines
9.6 KiB
C
508 lines
9.6 KiB
C
/*
|
|
* Top users/processes display for Unix
|
|
* Version 3
|
|
*
|
|
* This program may be freely redistributed,
|
|
* but this entire comment MUST remain intact.
|
|
*
|
|
* Copyright (c) 1984, 1989, William LeFebvre, Rice University
|
|
* Copyright (c) 1989, 1990, 1992, William LeFebvre, Northwestern University
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/* This file contains the routines that interface to termcap and stty/gtty.
|
|
*
|
|
* Paul Vixie, February 1987: converted to use ioctl() instead of stty/gtty.
|
|
*
|
|
* I put in code to turn on the TOSTOP bit while top was running, but I
|
|
* didn't really like the results. If you desire it, turn on the
|
|
* preprocessor variable "TOStop". --wnl
|
|
*/
|
|
|
|
#include "os.h"
|
|
#include "top.h"
|
|
|
|
#include <sys/ioctl.h>
|
|
#ifdef CBREAK
|
|
# include <sgtty.h>
|
|
# define SGTTY
|
|
#else
|
|
# ifdef TCGETA
|
|
# define TERMIO
|
|
# include <termio.h>
|
|
# else
|
|
# define TERMIOS
|
|
# include <termios.h>
|
|
# endif
|
|
#endif
|
|
#if defined(TERMIO) || defined(TERMIOS)
|
|
# ifndef TAB3
|
|
# ifdef OXTABS
|
|
# define TAB3 OXTABS
|
|
# else
|
|
# define TAB3 0
|
|
# endif
|
|
# endif
|
|
#endif
|
|
#include "screen.h"
|
|
#include "boolean.h"
|
|
|
|
extern char *myname;
|
|
|
|
|
|
int overstrike;
|
|
int screen_length;
|
|
int screen_width;
|
|
char ch_erase;
|
|
char ch_kill;
|
|
char smart_terminal;
|
|
char PC;
|
|
char *tgetstr();
|
|
char *tgoto();
|
|
char termcap_buf[1024];
|
|
char string_buffer[1024];
|
|
char home[15];
|
|
char lower_left[15];
|
|
char *clear_line;
|
|
char *clear_screen;
|
|
char *clear_to_end;
|
|
char *cursor_motion;
|
|
char *start_standout;
|
|
char *end_standout;
|
|
char *terminal_init;
|
|
char *terminal_end;
|
|
|
|
#ifdef SGTTY
|
|
static struct sgttyb old_settings;
|
|
static struct sgttyb new_settings;
|
|
#endif
|
|
#ifdef TERMIO
|
|
static struct termio old_settings;
|
|
static struct termio new_settings;
|
|
#endif
|
|
#ifdef TERMIOS
|
|
static struct termios old_settings;
|
|
static struct termios new_settings;
|
|
#endif
|
|
static char is_a_terminal = No;
|
|
#ifdef TOStop
|
|
static int old_lword;
|
|
static int new_lword;
|
|
#endif
|
|
|
|
#define STDIN 0
|
|
#define STDOUT 1
|
|
#define STDERR 2
|
|
|
|
void
|
|
init_termcap(interactive)
|
|
|
|
int interactive;
|
|
|
|
{
|
|
char *bufptr;
|
|
char *PCptr;
|
|
char *term_name;
|
|
char *getenv();
|
|
int status;
|
|
|
|
/* set defaults in case we aren't smart */
|
|
screen_width = MAX_COLS;
|
|
screen_length = 0;
|
|
|
|
if (!interactive)
|
|
{
|
|
/* pretend we have a dumb terminal */
|
|
smart_terminal = No;
|
|
return;
|
|
}
|
|
|
|
/* assume we have a smart terminal until proven otherwise */
|
|
smart_terminal = Yes;
|
|
|
|
/* get the terminal name */
|
|
term_name = getenv("TERM");
|
|
|
|
/* if there is no TERM, assume it's a dumb terminal */
|
|
/* patch courtesy of Sam Horrocks at telegraph.ics.uci.edu */
|
|
if (term_name == NULL)
|
|
{
|
|
smart_terminal = No;
|
|
return;
|
|
}
|
|
|
|
/* now get the termcap entry */
|
|
if ((status = tgetent(termcap_buf, term_name)) != 1)
|
|
{
|
|
if (status == -1)
|
|
{
|
|
fprintf(stderr, "%s: can't open termcap file\n", myname);
|
|
}
|
|
else
|
|
{
|
|
fprintf(stderr, "%s: no termcap entry for a `%s' terminal\n",
|
|
myname, term_name);
|
|
}
|
|
|
|
/* pretend it's dumb and proceed */
|
|
smart_terminal = No;
|
|
return;
|
|
}
|
|
|
|
/* "hardcopy" immediately indicates a very stupid terminal */
|
|
if (tgetflag("hc"))
|
|
{
|
|
smart_terminal = No;
|
|
return;
|
|
}
|
|
|
|
/* set up common terminal capabilities */
|
|
if ((screen_length = tgetnum("li")) <= 0)
|
|
{
|
|
screen_length = smart_terminal = 0;
|
|
return;
|
|
}
|
|
|
|
/* screen_width is a little different */
|
|
if ((screen_width = tgetnum("co")) == -1)
|
|
{
|
|
screen_width = 79;
|
|
}
|
|
else
|
|
{
|
|
screen_width -= 1;
|
|
}
|
|
|
|
/* terminals that overstrike need special attention */
|
|
overstrike = tgetflag("os");
|
|
|
|
/* initialize the pointer into the termcap string buffer */
|
|
bufptr = string_buffer;
|
|
|
|
/* get "ce", clear to end */
|
|
if (!overstrike)
|
|
{
|
|
clear_line = tgetstr("ce", &bufptr);
|
|
}
|
|
|
|
/* get necessary capabilities */
|
|
if ((clear_screen = tgetstr("cl", &bufptr)) == NULL ||
|
|
(cursor_motion = tgetstr("cm", &bufptr)) == NULL)
|
|
{
|
|
smart_terminal = No;
|
|
return;
|
|
}
|
|
|
|
/* get some more sophisticated stuff -- these are optional */
|
|
clear_to_end = tgetstr("cd", &bufptr);
|
|
terminal_init = tgetstr("ti", &bufptr);
|
|
terminal_end = tgetstr("te", &bufptr);
|
|
start_standout = tgetstr("so", &bufptr);
|
|
end_standout = tgetstr("se", &bufptr);
|
|
|
|
/* pad character */
|
|
PC = (PCptr = tgetstr("pc", &bufptr)) ? *PCptr : 0;
|
|
|
|
/* set convenience strings */
|
|
(void) strncpy(home, tgoto(cursor_motion, 0, 0), sizeof(home) - 1);
|
|
home[sizeof(home) - 1] = '\0';
|
|
/* (lower_left is set in get_screensize) */
|
|
|
|
/* get the actual screen size with an ioctl, if needed */
|
|
/* This may change screen_width and screen_length, and it always
|
|
sets lower_left. */
|
|
get_screensize();
|
|
|
|
/* if stdout is not a terminal, pretend we are a dumb terminal */
|
|
#ifdef SGTTY
|
|
if (ioctl(STDOUT, TIOCGETP, &old_settings) == -1)
|
|
{
|
|
smart_terminal = No;
|
|
}
|
|
#endif
|
|
#ifdef TERMIO
|
|
if (ioctl(STDOUT, TCGETA, &old_settings) == -1)
|
|
{
|
|
smart_terminal = No;
|
|
}
|
|
#endif
|
|
#ifdef TERMIOS
|
|
if (tcgetattr(STDOUT, &old_settings) == -1)
|
|
{
|
|
smart_terminal = No;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void
|
|
init_screen()
|
|
|
|
{
|
|
/* get the old settings for safe keeping */
|
|
#ifdef SGTTY
|
|
if (ioctl(STDOUT, TIOCGETP, &old_settings) != -1)
|
|
{
|
|
/* copy the settings so we can modify them */
|
|
new_settings = old_settings;
|
|
|
|
/* turn on CBREAK and turn off character echo and tab expansion */
|
|
new_settings.sg_flags |= CBREAK;
|
|
new_settings.sg_flags &= ~(ECHO|XTABS);
|
|
(void) ioctl(STDOUT, TIOCSETP, &new_settings);
|
|
|
|
/* remember the erase and kill characters */
|
|
ch_erase = old_settings.sg_erase;
|
|
ch_kill = old_settings.sg_kill;
|
|
|
|
#ifdef TOStop
|
|
/* get the local mode word */
|
|
(void) ioctl(STDOUT, TIOCLGET, &old_lword);
|
|
|
|
/* modify it */
|
|
new_lword = old_lword | LTOSTOP;
|
|
(void) ioctl(STDOUT, TIOCLSET, &new_lword);
|
|
#endif
|
|
/* remember that it really is a terminal */
|
|
is_a_terminal = Yes;
|
|
|
|
/* send the termcap initialization string */
|
|
putcap(terminal_init);
|
|
}
|
|
#endif
|
|
#ifdef TERMIO
|
|
if (ioctl(STDOUT, TCGETA, &old_settings) != -1)
|
|
{
|
|
/* copy the settings so we can modify them */
|
|
new_settings = old_settings;
|
|
|
|
/* turn off ICANON, character echo and tab expansion */
|
|
new_settings.c_lflag &= ~(ICANON|ECHO);
|
|
new_settings.c_oflag &= ~(TAB3);
|
|
new_settings.c_cc[VMIN] = 1;
|
|
new_settings.c_cc[VTIME] = 0;
|
|
(void) ioctl(STDOUT, TCSETA, &new_settings);
|
|
|
|
/* remember the erase and kill characters */
|
|
ch_erase = old_settings.c_cc[VERASE];
|
|
ch_kill = old_settings.c_cc[VKILL];
|
|
|
|
/* remember that it really is a terminal */
|
|
is_a_terminal = Yes;
|
|
|
|
/* send the termcap initialization string */
|
|
putcap(terminal_init);
|
|
}
|
|
#endif
|
|
#ifdef TERMIOS
|
|
if (tcgetattr(STDOUT, &old_settings) != -1)
|
|
{
|
|
/* copy the settings so we can modify them */
|
|
new_settings = old_settings;
|
|
|
|
/* turn off ICANON, character echo and tab expansion */
|
|
new_settings.c_lflag &= ~(ICANON|ECHO);
|
|
new_settings.c_oflag &= ~(TAB3);
|
|
new_settings.c_cc[VMIN] = 1;
|
|
new_settings.c_cc[VTIME] = 0;
|
|
(void) tcsetattr(STDOUT, TCSADRAIN, &new_settings);
|
|
|
|
/* remember the erase and kill characters */
|
|
ch_erase = old_settings.c_cc[VERASE];
|
|
ch_kill = old_settings.c_cc[VKILL];
|
|
|
|
/* remember that it really is a terminal */
|
|
is_a_terminal = Yes;
|
|
|
|
/* send the termcap initialization string */
|
|
putcap(terminal_init);
|
|
}
|
|
#endif
|
|
|
|
if (!is_a_terminal)
|
|
{
|
|
/* not a terminal at all---consider it dumb */
|
|
smart_terminal = No;
|
|
}
|
|
}
|
|
|
|
void
|
|
end_screen()
|
|
|
|
{
|
|
/* move to the lower left, clear the line and send "te" */
|
|
if (smart_terminal)
|
|
{
|
|
putcap(lower_left);
|
|
putcap(clear_line);
|
|
fflush(stdout);
|
|
putcap(terminal_end);
|
|
}
|
|
|
|
/* if we have settings to reset, then do so */
|
|
if (is_a_terminal)
|
|
{
|
|
#ifdef SGTTY
|
|
(void) ioctl(STDOUT, TIOCSETP, &old_settings);
|
|
#ifdef TOStop
|
|
(void) ioctl(STDOUT, TIOCLSET, &old_lword);
|
|
#endif
|
|
#endif
|
|
#ifdef TERMIO
|
|
(void) ioctl(STDOUT, TCSETA, &old_settings);
|
|
#endif
|
|
#ifdef TERMIOS
|
|
(void) tcsetattr(STDOUT, TCSADRAIN, &old_settings);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void
|
|
reinit_screen()
|
|
|
|
{
|
|
/* install our settings if it is a terminal */
|
|
if (is_a_terminal)
|
|
{
|
|
#ifdef SGTTY
|
|
(void) ioctl(STDOUT, TIOCSETP, &new_settings);
|
|
#ifdef TOStop
|
|
(void) ioctl(STDOUT, TIOCLSET, &new_lword);
|
|
#endif
|
|
#endif
|
|
#ifdef TERMIO
|
|
(void) ioctl(STDOUT, TCSETA, &new_settings);
|
|
#endif
|
|
#ifdef TERMIOS
|
|
(void) tcsetattr(STDOUT, TCSADRAIN, &new_settings);
|
|
#endif
|
|
}
|
|
|
|
/* send init string */
|
|
if (smart_terminal)
|
|
{
|
|
putcap(terminal_init);
|
|
}
|
|
}
|
|
|
|
void
|
|
get_screensize()
|
|
|
|
{
|
|
|
|
#ifdef TIOCGWINSZ
|
|
|
|
struct winsize ws;
|
|
|
|
if (ioctl (1, TIOCGWINSZ, &ws) != -1)
|
|
{
|
|
if (ws.ws_row != 0)
|
|
{
|
|
screen_length = ws.ws_row;
|
|
}
|
|
if (ws.ws_col != 0)
|
|
{
|
|
screen_width = ws.ws_col - 1;
|
|
}
|
|
}
|
|
|
|
#else
|
|
#ifdef TIOCGSIZE
|
|
|
|
struct ttysize ts;
|
|
|
|
if (ioctl (1, TIOCGSIZE, &ts) != -1)
|
|
{
|
|
if (ts.ts_lines != 0)
|
|
{
|
|
screen_length = ts.ts_lines;
|
|
}
|
|
if (ts.ts_cols != 0)
|
|
{
|
|
screen_width = ts.ts_cols - 1;
|
|
}
|
|
}
|
|
|
|
#endif /* TIOCGSIZE */
|
|
#endif /* TIOCGWINSZ */
|
|
|
|
(void) strncpy(lower_left, tgoto(cursor_motion, 0, screen_length - 1),
|
|
sizeof(lower_left) - 1);
|
|
lower_left[sizeof(lower_left) - 1] = '\0';
|
|
}
|
|
|
|
void
|
|
standout(msg)
|
|
|
|
char *msg;
|
|
|
|
{
|
|
if (smart_terminal)
|
|
{
|
|
putcap(start_standout);
|
|
fputs(msg, stdout);
|
|
putcap(end_standout);
|
|
}
|
|
else
|
|
{
|
|
fputs(msg, stdout);
|
|
}
|
|
}
|
|
|
|
void
|
|
clear()
|
|
|
|
{
|
|
if (smart_terminal)
|
|
{
|
|
putcap(clear_screen);
|
|
}
|
|
}
|
|
|
|
int
|
|
clear_eol(len)
|
|
|
|
int len;
|
|
|
|
{
|
|
if (smart_terminal && !overstrike && len > 0)
|
|
{
|
|
if (clear_line)
|
|
{
|
|
putcap(clear_line);
|
|
return(0);
|
|
}
|
|
else
|
|
{
|
|
while (len-- > 0)
|
|
{
|
|
putchar(' ');
|
|
}
|
|
return(1);
|
|
}
|
|
}
|
|
return(-1);
|
|
}
|
|
|
|
void
|
|
go_home()
|
|
|
|
{
|
|
if (smart_terminal)
|
|
{
|
|
putcap(home);
|
|
}
|
|
}
|
|
|
|
/* This has to be defined as a subroutine for tputs (instead of a macro) */
|
|
|
|
void
|
|
putstdout(ch)
|
|
|
|
char ch;
|
|
|
|
{
|
|
putchar(ch);
|
|
}
|
|
|