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/*-
* Copyright (c) 1993, 1994
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1993, 1994, 1995, 1996
* Keith Bostic. All rights reserved.
*
* See the LICENSE file for redistribution information.
*/
#include "config.h"
#ifndef lint
static const char sccsid[] = "@(#)tk_main.c 8.17 (Berkeley) 5/9/96";
#endif /* not lint */
#include <sys/types.h>
#include <sys/queue.h>
#include <bitstring.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include "../common/common.h"
#include "tki.h"
#include "pathnames.h"
GS *__global_list; /* GLOBAL: List of screens. */
sigset_t __sigblockset; /* GLOBAL: Blocked signals. */
static GS *gs_init __P((char *));
static void killsig __P((SCR *));
static void perr __P((char *, char *));
static void sig_end __P((GS *));
static int sig_init __P((GS *));
static int tcl_init __P((GS *));
static void tcl_err __P((TK_PRIVATE *));
/*
* main --
* This is the main loop for the standalone Tcl/Tk editor.
*/
int
main(argc, argv)
int argc;
char *argv[];
{
static int reenter;
GS *gp;
TK_PRIVATE *tkp;
size_t rows, cols;
int rval;
char **p_av, **t_av, *script;
/* If loaded at 0 and jumping through a NULL pointer, stop. */
if (reenter++)
abort();
/* Create and initialize the global structure. */
__global_list = gp = gs_init(argv[0]);
/* Initialize Tk/Tcl. */
if (tcl_init(gp))
exit (1);
/*
* Strip out any arguments that the common editor doesn't understand
* (i.e. the Tk/Tcl arguments). Search for -i first, it's the Tk/Tcl
* startup script and needs to be run first.
*
* XXX
* There's no way to portably call getopt twice.
*/
script = "init.tcl";
for (p_av = t_av = argv;;) {
if (*t_av == NULL) {
*p_av = NULL;
break;
}
if (!strcmp(*t_av, "--")) {
while ((*p_av++ = *t_av++) != NULL);
break;
}
if (!memcmp(*t_av, "-i", sizeof("-i") - 1)) {
if (t_av[0][2] != '\0') {
script = t_av[0] + 2;
++t_av;
--argc;
continue;
}
if (t_av[1] != NULL) {
script = t_av[1];
t_av += 2;
argc -= 2;
continue;
}
}
*p_av++ = *t_av++;
}
for (p_av = t_av = argv;;) {
if (*t_av == NULL) {
*p_av = NULL;
break;
}
if (!strcmp(*t_av, "--")) {
while ((*p_av++ = *t_av++) != NULL);
break;
}
if (t_av[1] != NULL &&
(!memcmp(*t_av, "-background", sizeof("-background") - 1) ||
!memcmp(*t_av, "-bg", sizeof("-bg") - 1) ||
!memcmp(*t_av, "-borderwidth", sizeof("-borderwidth") - 1)||
!memcmp(*t_av, "-bd", sizeof("-bd") - 1) ||
!memcmp(*t_av, "-foreground", sizeof("-foreground") - 1) ||
!memcmp(*t_av, "-fg", sizeof("-fg") - 1) ||
!memcmp(*t_av, "-font", sizeof("-font") - 1))) {
if (Tcl_VarEval(tkp->interp, ".t configure ",
t_av[0], " ", t_av[1], NULL) == TCL_ERROR)
tcl_err(tkp);
t_av += 2;
argc -= 2;
continue;
}
if (!memcmp(*t_av, "-geometry", sizeof("-geometry") - 1)) {
if (Tcl_VarEval(tkp->interp, "wm geometry . ",
*t_av + sizeof("-geometry") - 1, NULL) == TCL_ERROR)
tcl_err(tkp);
++t_av;
--argc;
continue;
}
*p_av++ = *t_av++;
}
/* Load the initial Tcl/Tk script. */
tkp = GTKP(gp);
if (Tcl_EvalFile(tkp->interp, script) == TCL_ERROR)
tcl_err(tkp);
/* Add the terminal type to the global structure. */
if ((OG_D_STR(gp, GO_TERM) =
OG_STR(gp, GO_TERM) = strdup("tkterm")) == NULL)
perr(gp->progname, NULL);
/* Figure out how big the screen is. */
if (tk_ssize(NULL, 0, &rows, &cols, NULL))
exit (1);
/* Add the rows and columns to the global structure. */
OG_VAL(gp, GO_LINES) = OG_D_VAL(gp, GO_LINES) = rows;
OG_VAL(gp, GO_COLUMNS) = OG_D_VAL(gp, GO_COLUMNS) = cols;
/* Start catching signals. */
if (sig_init(gp))
exit (1);
/* Run ex/vi. */
rval = editor(gp, argc, argv);
/* Clean up signals. */
sig_end(gp);
/* Clean up the terminal. */
(void)tk_quit(gp);
/* If a killer signal arrived, pretend we just got it. */
if (tkp->killersig) {
(void)signal(tkp->killersig, SIG_DFL);
(void)kill(getpid(), tkp->killersig);
/* NOTREACHED */
}
/* Free the global and TK private areas. */
#if defined(DEBUG) || defined(PURIFY) || defined(LIBRARY)
free(tkp);
free(gp);
#endif
exit (rval);
}
/*
* gs_init --
* Create and partially initialize the GS structure.
*/
static GS *
gs_init(name)
char *name;
{
TK_PRIVATE *tkp;
GS *gp;
int fd;
char *p;
/* Figure out what our name is. */
if ((p = strrchr(name, '/')) != NULL)
name = p + 1;
/* Allocate the global structure. */
CALLOC_NOMSG(NULL, gp, GS *, 1, sizeof(GS));
/* Allocate the CL private structure. */
if (gp != NULL)
CALLOC_NOMSG(NULL, tkp, TK_PRIVATE *, 1, sizeof(TK_PRIVATE));
if (gp == NULL || tkp == NULL)
perr(name, NULL);
gp->tk_private = tkp;
TAILQ_INIT(&tkp->evq);
/* Initialize the list of curses functions. */
gp->scr_addstr = tk_addstr;
gp->scr_attr = tk_attr;
gp->scr_baud = tk_baud;
gp->scr_bell = tk_bell;
gp->scr_busy = NULL;
gp->scr_clrtoeol = tk_clrtoeol;
gp->scr_cursor = tk_cursor;
gp->scr_deleteln = tk_deleteln;
gp->scr_event = tk_event;
gp->scr_ex_adjust = tk_ex_adjust;
gp->scr_fmap = tk_fmap;
gp->scr_insertln = tk_insertln;
gp->scr_keyval = tk_keyval;
gp->scr_move = tk_move;
gp->scr_msg = NULL;
gp->scr_optchange = tk_optchange;
gp->scr_refresh = tk_refresh;
gp->scr_rename = tk_rename;
gp->scr_screen = tk_screen;
gp->scr_suspend = tk_suspend;
gp->scr_usage = tk_usage;
/*
* Set the G_STDIN_TTY flag. It's purpose is to avoid setting and
* resetting the tty if the input isn't from there.
*/
if (isatty(STDIN_FILENO))
F_SET(gp, G_STDIN_TTY);
/*
* We expect that if we've lost our controlling terminal that the
* open() (but not the tcgetattr()) will fail.
*/
if (F_ISSET(gp, G_STDIN_TTY)) {
if (tcgetattr(STDIN_FILENO, &tkp->orig) == -1)
goto tcfail;
} else if ((fd = open(_PATH_TTY, O_RDONLY, 0)) != -1) {
if (tcgetattr(fd, &tkp->orig) == -1)
tcfail: perr(name, "tcgetattr");
(void)close(fd);
}
gp->progname = name;
return (gp);
}
/*
* tcl_init --
* Get Tcl/Tk up and running.
*/
static int
tcl_init(gp)
GS *gp;
{
TK_PRIVATE *tkp;
tkp = GTKP(gp);
if ((tkp->interp = Tcl_CreateInterp()) == NULL)
tcl_err(tkp);
/* XXX: Tk 4.1 has an incompatible change. */
#if (TK_MAJOR_VERSION == 4) && (TK_MINOR_VERSION == 0)
if (Tk_CreateMainWindow(tkp->interp, NULL, "vi", "Vi") == NULL)
tcl_err(tkp);
#endif
if (Tcl_Init(tkp->interp) == TCL_ERROR)
tcl_err(tkp);
if (Tk_Init(tkp->interp) == TCL_ERROR)
tcl_err(tkp);
/* Shared variables. */
(void)Tcl_LinkVar(tkp->interp,
"tk_cursor_row", (char *)&tkp->tk_cursor_row, TCL_LINK_INT);
(void)Tcl_LinkVar(tkp->interp,
"tk_cursor_col", (char *)&tkp->tk_cursor_col, TCL_LINK_INT);
(void)Tcl_LinkVar(tkp->interp,
"tk_ssize_row", (char *)&tkp->tk_ssize_row, TCL_LINK_INT);
(void)Tcl_LinkVar(tkp->interp,
"tk_ssize_col", (char *)&tkp->tk_ssize_col, TCL_LINK_INT);
/* Functions called by Tcl script. */
Tcl_CreateCommand(tkp->interp, "tk_key", tk_key, tkp, NULL);
Tcl_CreateCommand(tkp->interp, "tk_op", tk_op, tkp, NULL);
Tcl_CreateCommand(tkp->interp, "tk_opt_init", tk_opt_init, tkp, NULL);
Tcl_CreateCommand(tkp->interp, "tk_opt_set", tk_opt_set, tkp, NULL);
Tcl_CreateCommand(tkp->interp, "tk_version", tk_version, tkp, NULL);
/* Other initialization. */
if (Tcl_Eval(tkp->interp, "wm geometry . =80x28+0+0") == TCL_ERROR)
tcl_err(tkp);
return (0);
}
/*
* tcl_err --
* Tcl/Tk error message during initialization.
*/
static void
tcl_err(tkp)
TK_PRIVATE *tkp;
{
(void)fprintf(stderr, "%s\n", tkp->interp->result != NULL ?
tkp->interp->result : "Tcl/Tk: initialization error");
(void)tk_usage();
exit (1);
}
#define GLOBAL_TKP \
TK_PRIVATE *tkp = GTKP(__global_list);
static void
h_hup(signo)
int signo;
{
GLOBAL_TKP;
F_SET(tkp, TK_SIGHUP);
tkp->killersig = SIGHUP;
}
static void
h_int(signo)
int signo;
{
GLOBAL_TKP;
F_SET(tkp, TK_SIGINT);
}
static void
h_term(signo)
int signo;
{
GLOBAL_TKP;
F_SET(tkp, TK_SIGTERM);
tkp->killersig = SIGTERM;
}
static void
h_winch(signo)
int signo;
{
GLOBAL_TKP;
F_SET(tkp, TK_SIGWINCH);
}
#undef GLOBAL_TKP
/*
* sig_init --
* Initialize signals.
*/
static int
sig_init(gp)
GS *gp;
{
TK_PRIVATE *tkp;
struct sigaction act;
tkp = GTKP(gp);
(void)sigemptyset(&__sigblockset);
/*
* Use sigaction(2), not signal(3), since we don't always want to
* restart system calls. The example is when waiting for a command
* mode keystroke and SIGWINCH arrives. Besides, you can't portably
* restart system calls (thanks, POSIX!).
*/
#define SETSIG(signal, handler, off) { \
if (sigaddset(&__sigblockset, signal)) \
goto err; \
act.sa_handler = handler; \
sigemptyset(&act.sa_mask); \
act.sa_flags = 0; \
if (sigaction(signal, &act, &tkp->oact[off])) \
goto err; \
}
#undef SETSIG
return (0);
err: perr(gp->progname, NULL);
return (1);
}
/*
* sig_end --
* End signal setup.
*/
static void
sig_end(gp)
GS *gp;
{
TK_PRIVATE *tkp;
tkp = GTKP(gp);
(void)sigaction(SIGHUP, NULL, &tkp->oact[INDX_HUP]);
(void)sigaction(SIGINT, NULL, &tkp->oact[INDX_INT]);
(void)sigaction(SIGTERM, NULL, &tkp->oact[INDX_TERM]);
(void)sigaction(SIGWINCH, NULL, &tkp->oact[INDX_WINCH]);
}
/*
* perr --
* Print system error.
*/
static void
perr(name, msg)
char *name, *msg;
{
(void)fprintf(stderr, "%s:", name);
if (msg != NULL)
(void)fprintf(stderr, "%s:", msg);
(void)fprintf(stderr, "%s\n", strerror(errno));
exit(1);
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.