v08i017: hint, an unobtrusive messager, part 2 of 2
Brandon S. Allbery - comp.sources.misc
allbery at uunet.UU.NET
Fri Aug 25 11:49:31 AEST 1989
Posting-number: Volume 8, Issue 17
Submitted-by: edf at ROCKY2.ROCKEFELLER.EDU (David MacKenzie)
Archive-name: hint/part02
#! /bin/sh
# This is a shell archive. Remove anything before this line, then unpack
# it by saving it into a file and typing "sh file". To overwrite existing
# files, type "sh file -c". You can also feed this as standard input via
# unshar, or by typing "sh <file", e.g.. If this archive is complete, you
# will see the following message at the end:
# "End of archive 2 (of 2)."
# Contents: tty.c clearhint.c Makefile COPYING
# Wrapped by dave at zedfdc on Thu Aug 24 20:10:06 1989
PATH=/bin:/usr/bin:/usr/ucb ; export PATH
if test -f 'tty.c' -a "${1}" != "-c" ; then
echo shar: Will not clobber existing file \"'tty.c'\"
else
echo shar: Extracting \"'tty.c'\" \(6097 characters\)
sed "s/^X//" >'tty.c' <<'END_OF_FILE'
X/* tty.c -- functions dealing with terminals and termcap
X Copyright (C) 1989 David MacKenzie
X
X This program is free software; you can redistribute it and/or modify
X it under the terms of the GNU General Public License as published by
X the Free Software Foundation; either version 1, or (at your option)
X any later version.
X
X This program is distributed in the hope that it will be useful,
X but WITHOUT ANY WARRANTY; without even the implied warranty of
X MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
X GNU General Public License for more details.
X
X You should have received a copy of the GNU General Public License
X along with this program; if not, write to the Free Software
X Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
X
X#include "hint.h"
X
X/* Termcap codes. */
Xstatic char *tc_ts; /* To status line. */
Xstatic char *tc_fs; /* From status line. */
Xstatic char *tc_ds; /* Disable (clear) status line. */
Xstatic char *tc_bl; /* Bell (possibly visual). */
Xstatic short tc_ws; /* Width (in columns) of status line. */
X
X/* Send the message to `tt->tt_tty'. Use hinttab to determine what the
X status line codes for that terminal are. */
X
Xvoid
Xsendhint (tt)
X struct ttylist *tt;
X{
X int fd;
X
X if (!hintable (tt->tt_tty))
X {
X fprintf (stderr, "%s: %s on %s is no longer accepting hints\n",
X program_name, tt->tt_user, tt->tt_tty);
X return;
X }
X init_buffer ();
X /* We put the beep here because bells sometimes don't work when in the
X status line. */
X tputs (tt->tt_ht.h_bl, 1, buffer_char);
X tputs (tgoto (tt->tt_ht.h_ts, 0, 0), 1, buffer_char);
X if (!name_at_end)
X {
X buffer_string ("(");
X buffer_string (whoami ());
X buffer_string (") ");
X }
X buffer_string (message);
X if (name_at_end)
X {
X buffer_string (" - ");;
X buffer_string (whoami ());
X }
X tputs (tt->tt_ht.h_fs, 1, buffer_char);
X
X fd = open (tt->tt_tty, O_WRONLY);
X if (fd == -1)
X pfatal (tt->tt_tty);
X flush_buffer (fd);
X close (fd);
X}
X
X/* Erase the hint from `tt->tt_tty'. */
X
Xvoid
Xerasehint (tt)
X struct ttylist *tt;
X{
X int fd;
X
X init_buffer ();
X tputs (tt->tt_ht.h_ds, 1, buffer_char);
X
X fd = open (tt->tt_tty, O_WRONLY);
X if (fd == -1)
X pfatal (tt->tt_tty);
X flush_buffer (fd);
X close (fd);
X}
X
X/* Return our username. First try utmp entry; if that fails, use uid.
X Guaranteed to return a string 8 characters or shorter. */
X
Xchar *
Xwhoami ()
X{
X char *me;
X
X me = getlogin ();
X if (me == NULL)
X me = pwname ();
X if (strlen (me) > 8)
X me[8] = 0;
X return me;
X}
X
X/* Return the passwd name based on our uid. */
X
Xchar *
Xpwname ()
X{
X struct passwd *pw;
X
X pw = getpwuid (getuid ());
X if (pw == NULL)
X return "";
X else
X return pw->pw_name;
X}
X
X/* Set the entry in hinttab for tty `tty' (a full path).
X
X First we search for an existing (invalid) entry for `tty', and if
X we find one, we update it.
X
X If we don't find one, we open the file in
X APPEND mode, and add a new entry to the end. Since we're using
X atomic writes, we don't need to use any special file locking to
X prevent competing hint processes from writing scrambled entries to
X the end of the file. */
X
Xvoid
Xupdatetab (tty)
X char *tty;
X{
X static struct hinttab h;
X
X /* Search the hinttab for an old entry for `tty'. */
X sethtent ();
X if (!gethttty (tty))
X {
X /* No previous entry for `tty'. Add one. */
X endhtent ();
X sethtapp ();
X }
X setup_termcap ();
X get_speed ();
X strcpy (h.h_tty, tty);
X strcpy (h.h_ts, tc_ts);
X strcpy (h.h_fs, tc_fs);
X strcpy (h.h_ds, tc_ds);
X strcpy (h.h_bl, tc_bl);
X h.h_ws = tc_ws;
X writehtent (&h);
X endhtent ();
X}
X
X/* These functions do their best to provide atomic writes, since
X we don't want our output getting mixed up with that of foreground
X processes. They don't check for overflows. */
X
Xstatic char output_buffer[300];
Xstatic int buffer_length;
X
Xvoid
Xinit_buffer ()
X{
X buffer_length = 0;
X}
X
Xint
Xbuffer_char (c)
X int c;
X{
X output_buffer[buffer_length++] = c;
X}
X
X/* `s' is a null-terminated string. */
X
Xvoid
Xbuffer_string (s)
X char *s;
X{
X while (*s)
X output_buffer[buffer_length++] = *s++;
X}
X
Xvoid
Xflush_buffer (fd)
X int fd;
X{
X write (fd, output_buffer, buffer_length);
X}
X
X/* Output speed for tputs. */
Xextern short ospeed;
X
X/* Padding character for tputs. */
Xextern char PC;
X
X/* For tgoto. */
Xextern char *BC, *UP;
X
X/* Raw termcap entry. */
Xstatic char entry[1024];
X
X/* Extracted termcap strings. */
Xstatic char strings[1024];
X
X/* Initialize global termcap strings. */
X
Xvoid
Xsetup_termcap ()
X{
X char *tc_pc; /* Padding character string. */
X
X if (term == NULL)
X {
X fprintf (stderr, "%s: TERM environment variable is not defined\n",
X program_name);
X exit (1);
X }
X switch (tgetent (entry, term))
X {
X case 0:
X fprintf (stderr,
X "%s: Terminal type %s is unknown\n", program_name, term);
X exit (1);
X case -1:
X fprintf (stderr,
X "%s: Cannot open terminal description database\n", program_name);
X exit (1);
X }
X
X /* Re-use term to point to space for next extracted string. */
X term = strings;
X tc_pc = tgetstr ("pc", &term);
X PC = tc_pc ? *tc_pc : 0;
X BC = UP = NULL;
X if (tgetflag ("hs"))
X {
X /* tgetstr returns NULL if the capability was not found. */
X tc_ts = tgetstr ("ts", &term);
X tc_fs = tgetstr ("fs", &term);
X tc_ds = tgetstr ("ds", &term);
X tc_ws = tgetnum ("ws");
X if (tc_ws == -1)
X tc_ws = DEF_WS;
X }
X else
X {
X tc_ts = tc_fs = tc_ds = "";
X tc_ws = DEF_WS;
X }
X if (use_vbell)
X tc_bl = tgetstr ("vb", &term);
X else
X tc_bl = NULL;
X if (use_bell && !tc_bl)
X {
X tc_bl = tgetstr ("bl", &term);
X if (!tc_bl)
X tc_bl = "\7";
X }
X else
X tc_bl = "";
X}
X
Xvoid
Xget_speed ()
X{
X#ifdef USG
X struct termio tty_buffer;
X
X if (ioctl (1, TCGETA, &tty_buffer) != -1)
X ospeed = tty_buffer.c_cflag & CBAUD;
X#else
X struct sgttyb tty_buffer;
X
X if (gtty (1, &tty_buffer) != -1)
X ospeed = tty_buffer.sg_ospeed;
X#endif
X else
X ospeed = 0;
X}
END_OF_FILE
if test 6097 -ne `wc -c <'tty.c'`; then
echo shar: \"'tty.c'\" unpacked with wrong size!
fi
# end of 'tty.c'
fi
if test -f 'clearhint.c' -a "${1}" != "-c" ; then
echo shar: Will not clobber existing file \"'clearhint.c'\"
else
echo shar: Extracting \"'clearhint.c'\" \(2958 characters\)
sed "s/^X//" >'clearhint.c' <<'END_OF_FILE'
X/* clearhint.c -- clear terminal status line
X Copyright (C) 1989 David MacKenzie
X
X This program is free software; you can redistribute it and/or modify
X it under the terms of the GNU General Public License as published by
X the Free Software Foundation; either version 1, or (at your option)
X any later version.
X
X This program is distributed in the hope that it will be useful,
X but WITHOUT ANY WARRANTY; without even the implied warranty of
X MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
X GNU General Public License for more details.
X
X You should have received a copy of the GNU General Public License
X along with this program; if not, write to the Free Software
X Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
X
X/* clearhint - clear terminal status line
X
X Usage: clearhint [-T terminal]
X
X David MacKenzie
X Latest revision: 08/15/89 */
X
X#include <stdio.h>
X#ifdef USG
X#include <termio.h>
X#else
X#include <sgtty.h>
X#endif
X
Xchar *getenv ();
Xchar *tgetstr ();
Xvoid exit ();
X
Xint tcputchar ();
Xvoid getspeed ();
Xvoid usage ();
X
Xextern short ospeed; /* Output speed of stdout for tputs. */
Xextern char PC; /* Pad character for tputs. */
X
Xint
Xmain (argc, argv)
X int argc;
X char **argv;
X{
X extern char *optarg;
X extern int optind;
X char entry[1024]; /* Raw termcap entry. */
X char strings[80]; /* Extracted termcap strings. */
X char *term; /* Environment variable TERM. */
X char *next_string; /* Pointer into strings. */
X char *tc_ds; /* Disable status line string. */
X char *tc_pc; /* Pad character string. */
X int c; /* Option character. */
X
X term = getenv ("TERM");
X while ((c = getopt (argc, argv, "T:")) != EOF)
X if (c == 'T')
X term = optarg;
X else
X usage (argv[0]);
X if (optind != argc)
X usage (argv[0]);
X
X if (term == NULL)
X {
X fprintf (stderr,
X "%s: TERM environment variable is not defined\n", argv[0]);
X exit (1);
X }
X
X switch (tgetent (entry, term))
X {
X case 0:
X fprintf (stderr,
X "%s: Terminal type %s is unknown\n", argv[0], term);
X exit (1);
X case -1:
X fprintf (stderr,
X "%s: Cannot open terminal description database\n", argv[0]);
X exit (1);
X }
X
X getspeed ();
X
X next_string = strings;
X tc_pc = tgetstr ("pc", &next_string);
X PC = tc_pc ? *tc_pc : 0;
X tc_ds = tgetstr ("ds", &next_string);
X if (tc_ds)
X {
X tputs (tc_ds, 1, tcputchar);
X exit (0);
X }
X exit (1);
X /* NOTREACHED */
X}
X
Xvoid
Xgetspeed ()
X{
X#ifdef USG
X struct termio tty_buffer;
X
X if (ioctl (1, TCGETA, &tty_buffer) != -1)
X ospeed = tty_buffer.c_cflag & CBAUD;
X#else
X struct sgttyb tty_buffer;
X
X if (gtty (1, &tty_buffer) != -1)
X ospeed = tty_buffer.sg_ospeed;
X#endif
X else
X ospeed = 0;
X}
X
Xint
Xtcputchar (c)
X int c;
X{
X putchar (c & 0x7f);
X return c;
X}
X
Xvoid
Xusage (program)
X char *program;
X{
X fprintf (stderr, "Usage: %s [-T terminal]\n", program);
X exit (1);
X}
END_OF_FILE
if test 2958 -ne `wc -c <'clearhint.c'`; then
echo shar: \"'clearhint.c'\" unpacked with wrong size!
fi
# end of 'clearhint.c'
fi
if test -f 'Makefile' -a "${1}" != "-c" ; then
echo shar: Will not clobber existing file \"'Makefile'\"
else
echo shar: Extracting \"'Makefile'\" \(1704 characters\)
sed "s/^X//" >'Makefile' <<'END_OF_FILE'
X# Makefile for hint
X# David MacKenzie
X# Latest revision: 08/24/89
X
X# Targets:
X# all (default)
X# Make the executables of hint and clearhint in the current directory.
X# install
X# Copy the executables into $(BINDIR) and chmod them (must be root).
X# initialize
X# Create and clear $(DATAFILE).
X# clean
X# Remove executable, object and temporary files from current directory.
X# lint
X# Run lint on hint sources with output in LINT.OUT.
X# tags
X# Run ctags on hint sources.
X# kit
X# Make shell archive.
X
XSHELL = /bin/sh
X
X# Path of the file containing hint y users' termcap strings.
XDATAFILE = /usr/local/lib/hinttab
X
X# Directory for the binaries to go in.
XBINDIR = /usr/new
X
X# DEFS should include -DUSG on System V.
XDEFS = -DHINTTAB=\"$(DATAFILE)\" -DUSG
XCFLAGS = -O $(DEFS)
XLDFLAGS = -s
X# LIBS should include -ltermcap on BSD, -lcurses on System V.
XLIBS = -lcurses
X
XHDRS = hint.h
X# Include str.c and str.o on BSD; comment them out on System V.
XSRCS = main.c hinttab.c stov.c tty.c user.c # str.c
XOBJS = main.o hinttab.o stov.o tty.o user.o # str.o
X
Xall: hint clearhint
X
Xhint: $(OBJS)
X $(CC) -o hint $(LDFLAGS) $(OBJS) $(LIBS)
X chmod 4755 hint
X
X$(OBJS): $(HDRS)
X
X
Xclearhint: clearhint.c
X $(CC) -o clearhint $(CFLAGS) $(LDFLAGS) clearhint.c $(LIBS)
X
Xinstall: hint clearhint hall.sh
X cp hint $(BINDIR)/hint
X chmod 4755 $(BINDIR)/hint
X cp clearhint $(BINDIR)/clearhint
X chmod 755 $(BINDIR)/clearhint
X cp hall.sh $(BINDIR)/hall
X chmod 755 $(BINDIR)/hall
X
Xinitialize:
X cat /dev/null > $(DATAFILE)
X chmod 644 $(DATAFILE)
X
Xclean:
X rm -f $(OBJS) hint clearhint LINT.OUT tags a.out mon.out core RUNLOG
X
Xlint:
X lint $(DEFS) $(SRCS) $(LIBS) > LINT.OUT
X
Xtags: $(SRCS)
X ctags $(SRCS)
X
Xkit:
X makekit -m -p -nHint -s40k
END_OF_FILE
if test 1704 -ne `wc -c <'Makefile'`; then
echo shar: \"'Makefile'\" unpacked with wrong size!
fi
# end of 'Makefile'
fi
if test -f 'COPYING' -a "${1}" != "-c" ; then
echo shar: Will not clobber existing file \"'COPYING'\"
else
echo shar: Extracting \"'COPYING'\" \(12488 characters\)
sed "s/^X//" >'COPYING' <<'END_OF_FILE'
X
X GNU GENERAL PUBLIC LICENSE
X Version 1, February 1989
X
X Copyright (C) 1989 Free Software Foundation, Inc.
X 675 Mass Ave, Cambridge, MA 02139, USA
X Everyone is permitted to copy and distribute verbatim copies
X of this license document, but changing it is not allowed.
X
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X This program is free software; you can redistribute it and/or modify
X it under the terms of the GNU General Public License as published by
X the Free Software Foundation; either version 1, or (at your option)
X any later version.
X
X This program is distributed in the hope that it will be useful,
X but WITHOUT ANY WARRANTY; without even the implied warranty of
X MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
X GNU General Public License for more details.
X
X You should have received a copy of the GNU General Public License
X along with this program; if not, write to the Free Software
X Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
X
XAlso add information on how to contact you by electronic and paper mail.
X
XIf the program is interactive, make it output a short notice like this
Xwhen it starts in an interactive mode:
X
X Gnomovision version 69, Copyright (C) 19xx name of author
X Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
X This is free software, and you are welcome to redistribute it
X under certain conditions; type `show c' for details.
X
XThe hypothetical commands `show w' and `show c' should show the
Xappropriate parts of the General Public License. Of course, the
Xcommands you use may be called something other than `show w' and `show
Xc'; they could even be mouse-clicks or menu items--whatever suits your
Xprogram.
X
XYou should also get your employer (if you work as a programmer) or your
Xschool, if any, to sign a "copyright disclaimer" for the program, if
Xnecessary. Here a sample; alter the names:
X
X Yoyodyne, Inc., hereby disclaims all copyright interest in the
X program `Gnomovision' (a program to direct compilers to make passes
X at assemblers) written by James Hacker.
X
X <signature of Ty Coon>, 1 April 1989
X Ty Coon, President of Vice
X
XThat's all there is to it!
END_OF_FILE
if test 12488 -ne `wc -c <'COPYING'`; then
echo shar: \"'COPYING'\" unpacked with wrong size!
fi
# end of 'COPYING'
fi
echo shar: End of archive 2 \(of 2\).
cp /dev/null ark2isdone
MISSING=""
for I in 1 2 ; do
if test ! -f ark${I}isdone ; then
MISSING="${MISSING} ${I}"
fi
done
if test "${MISSING}" = "" ; then
echo You have unpacked both archives.
rm -f ark[1-9]isdone
else
echo You still need to unpack the following archives:
echo " " ${MISSING}
fi
## End of shell archive.
exit 0
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