// Called before first plot after a set term command.
void qt_init()
{
if (qt_initialized)
return;
// If we are not connecting to an existing QtGnuplotWidget, start a QtGnuplotApplication
if (qt_optionWidget.isEmpty())
execGnuplotQt();
// Create a QApplication without event loop for QObject's that need it, namely font handling
// A better strategy would be to transfer the font handling to the QtGnuplotWidget, but it would require
// some synchronization between the widget and the gnuplot process.
int argc = 0;
QApplication* application = new QApplication(argc, (char**)( NULL));
#ifdef Q_WS_MAC
// Don't display this application in the MAC OS X dock
ProcessSerialNumber psn;
if (GetCurrentProcess(&psn) == noErr)
TransformProcessType(&psn, kProcessTransformToBackgroundApplication);
#endif
// The creation of a QApplication mangled our locale settings
#ifdef HAVE_LOCALE_H
setlocale(LC_NUMERIC, "C");
setlocale(LC_TIME, current_locale);
#endif
qt_out.setVersion(QDataStream::Qt_4_4);
qt_initialized = true;
term_interlock = (void *)qt_init;
GP_ATEXIT(qt_atexit);
}
// Called before first plot after a set term command.
void qt_init()
{
// Start the QtGnuplotApplication if not already started
if (qt_initialized)
return;
// Fork the GUI if necessary
int argc = 0;
pid_t pid = 0;
pid = fork();
if (pid < 0)
fprintf(stderr, "Forking error\n");
else if (pid == 0) // Child: start the GUI
{
signal(SIGINT, SIG_IGN); // Do not listen to SIGINT signals anymore
QtGnuplotApplication application(argc, (char**)( NULL));
application.exec();
exit(0);
}
// Parent: create a QApplication without event loop for QObject's that need it
QApplication* application = new QApplication(argc, (char**)( NULL));
// Init state variables
qt_localServerName = "qtgnuplot" + QString::number(pid);
qt_out.setVersion(QDataStream::Qt_4_4);
qt_initialized = true;
GP_ATEXIT(qt_atexit);
// The creation of a QApplication mangled our locale settings
#ifdef HAVE_LOCALE_H
setlocale(LC_NUMERIC, "C");
setlocale(LC_TIME, current_locale);
#endif
}
/* Gnuplot replacement for atexit(3) */
void gp_atexit(void (*function)(void))
{
/* Register new handler */
static bool debug_exit_handler_registered = false;
struct EXIT_HANDLER* new_handler = (struct EXIT_HANDLER*) malloc(sizeof(struct EXIT_HANDLER));
new_handler->function = function;
new_handler->next = exit_handlers;
exit_handlers = new_handler;
if (!debug_exit_handler_registered) {
GP_ATEXIT(debug_exit_handler);
debug_exit_handler_registered = true;
}
}
int
main(int argc, char **argv)
#endif
{
int i;
#ifdef LINUXVGA
LINUX_setup(); /* setup VGA before dropping privilege DBT 4/5/99 */
drop_privilege();
#endif
/* make sure that we really have revoked root access, this might happen if
gnuplot is compiled without vga support but is installed suid by mistake */
#ifdef __linux__
setuid(getuid());
#endif
#if defined(MSDOS) && !defined(_Windows) && !defined(__GNUC__)
PC_setup();
#endif /* MSDOS !Windows */
/* HBB: Seems this isn't needed any more for DJGPP V2? */
/* HBB: disable all floating point exceptions, just keep running... */
#if defined(DJGPP) && (DJGPP!=2)
_control87(MCW_EM, MCW_EM);
#endif
#if defined(OS2)
int rc;
#ifdef OS2_IPC
char semInputReadyName[40];
sprintf( semInputReadyName, "\\SEM32\\GP%i_Input_Ready", getpid() );
rc = DosCreateEventSem(semInputReadyName,&semInputReady,0,0);
if (rc != 0)
fputs("DosCreateEventSem error\n",stderr);
#endif
rc = RexxRegisterSubcomExe("GNUPLOT", (PFN) RexxInterface, NULL);
#endif
/* malloc large blocks, otherwise problems with fragmented mem */
#ifdef MALLOCDEBUG
malloc_debug(7);
#endif
/* get helpfile from home directory */
#ifdef __DJGPP__
{
char *s;
strcpy(HelpFile, argv[0]);
for (s = HelpFile; *s; s++)
if (*s == DIRSEP1)
*s = DIRSEP2; /* '\\' to '/' */
strcpy(strrchr(HelpFile, DIRSEP2), "/gnuplot.gih");
} /* Add also some "paranoid" tests for '\\': AP */
#endif /* DJGPP */
#ifdef VMS
unsigned int status[2] = { 1, 0 };
#endif
#if defined(HAVE_LIBEDITLINE)
rl_getc_function = getc_wrapper;
#endif
#if defined(HAVE_LIBREADLINE) || defined(HAVE_LIBEDITLINE)
/* T.Walter 1999-06-24: 'rl_readline_name' must be this fix name.
* It is used to parse a 'gnuplot' specific section in '~/.inputrc'
* or gnuplot specific commands in '.editrc' (when using editline
* instead of readline) */
rl_readline_name = "Gnuplot";
rl_terminal_name = getenv("TERM");
using_history();
#endif
#if defined(HAVE_LIBREADLINE) && !defined(MISSING_RL_TILDE_EXPANSION)
rl_complete_with_tilde_expansion = 1;
#endif
for (i = 1; i < argc; i++) {
if (!argv[i])
continue;
if (!strcmp(argv[i], "-V") || !strcmp(argv[i], "--version")) {
printf("gnuplot %s patchlevel %s\n",
gnuplot_version, gnuplot_patchlevel);
return 0;
} else if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "--help")) {
printf( "Usage: gnuplot [OPTION]... [FILE]\n"
#ifdef X11
"for X11 options see 'help X11->command-line-options'\n"
#endif
" -V, --version\n"
" -h, --help\n"
" -p --persist\n"
" -e \"command1; command2; ...\"\n"
"gnuplot %s patchlevel %s\n"
#ifdef DIST_CONTACT
"Report bugs to "DIST_CONTACT"\n"
" or %s\n",
#else
"Report bugs to %s\n",
#endif
gnuplot_version, gnuplot_patchlevel, bug_email);
return 0;
} else if (!strncmp(argv[i], "-persist", 2) || !strcmp(argv[i], "--persist")) {
persist_cl = TRUE;
}
}
#ifdef X11
/* the X11 terminal removes tokens that it recognizes from argv. */
{
int n = X11_args(argc, argv);
argv += n;
argc -= n;
}
#endif
setbuf(stderr, (char *) NULL);
#ifdef HAVE_SETVBUF
/* this was once setlinebuf(). Docs say this is
* identical to setvbuf(,NULL,_IOLBF,0), but MS C
* faults this (size out of range), so we try with
* size of 1024 instead. [SAS/C does that, too. -lh]
* Failing this, I propose we just make the call and
* ignore the return : its probably not a big deal
*/
if (setvbuf(stdout, (char *) NULL, _IOLBF, (size_t) 1024) != 0)
(void) fputs("Could not linebuffer stdout\n", stderr);
#ifdef X11
/* This call used to be in x11.trm, with the following comment:
* Multi-character inputs like escape sequences but also mouse-pasted
* text got buffered and therefore didn't trigger the select() function
* in X11_waitforinput(). Switching to unbuffered input solved this.
* 23 Jan 2002 (joze)
* But switching to unbuffered mode causes all characters in the input
* buffer to be lost. So the only safe time to do it is on program entry.
* The #ifdef X11 is probably unnecessary, but makes the change minimal.
* Do any non-X platforms suffer from the same problem?
* EAM - Jan 2004.
*/
setvbuf(stdin, (char *) NULL, _IONBF, 0);
#endif
#endif
gpoutfile = stdout;
/* Initialize pre-loaded user variables */
(void) Gcomplex(&udv_pi.udv_value, M_PI, 0.0);
udv_NaN = add_udv_by_name("NaN");
(void) Gcomplex(&(udv_NaN->udv_value), not_a_number(), 0.0);
udv_NaN->udv_undef = FALSE;
init_memory();
interactive = FALSE;
init_terminal(); /* can set term type if it likes */
push_terminal(0); /* remember the default terminal */
/* reset the terminal when exiting */
/* this is done through gp_atexit so that other terminal functions
* can be registered to be executed before the terminal is reset. */
GP_ATEXIT(term_reset);
# if defined(_Windows) && ! defined(WGP_CONSOLE)
interactive = TRUE;
# else
interactive = isatty(fileno(stdin));
# endif
if (argc > 1)
interactive = noinputfiles = FALSE;
else
noinputfiles = TRUE;
/* Need this before show_version is called for the first time */
#ifdef HAVE_SYS_UTSNAME_H
{
struct utsname uts;
/* something is fundamentally wrong if this fails ... */
if (uname(&uts) > -1) {
# ifdef _AIX
strcpy(os_name, uts.sysname);
sprintf(os_name, "%s.%s", uts.version, uts.release);
# elif defined(SCO)
strcpy(os_name, "SCO");
strcpy(os_rel, uts.release);
# elif defined(DJGPP)
if (!strncmp(uts.sysname, "??Un", 4)) /* don't print ??Unknow" */
strcpy(os_name, "Unknown");
else {
strcpy(os_name, uts.sysname);
strcpy(os_rel, uts.release);
}
# else
strcpy(os_name, uts.sysname);
strcpy(os_rel, uts.release);
# ifdef OS2
if (!strchr(os_rel,'.'))
/* write either "2.40" or "4.0", or empty -- don't print "OS/2 1" */
strcpy(os_rel, "");
# endif
# endif
}
}
#else /* ! HAVE_SYS_UTSNAME_H */
strcpy(os_name, OS);
strcpy(os_rel, "");
#endif /* HAVE_SYS_UTSNAME_H */
if (interactive)
show_version(stderr);
else
show_version(NULL); /* Only load GPVAL_COMPILE_OPTIONS */
#ifdef WGP_CONSOLE
#ifdef CONSOLE_SWITCH_CP
if (cp_changed && interactive) {
fprintf(stderr,
"\ngnuplot changed the codepage of this console from %i to %i to\n" \
"match the graph window. Some characters might only display correctly\n" \
"if you change the font to a non-raster type.\n",
cp_input, GetConsoleCP());
}
#else
if ((GetConsoleCP() != GetACP()) && interactive) {
fprintf(stderr,
"\nWarning: The codepage of the graph window (%i) and that of the\n" \
"console (%i) differ. Use `set encoding` or `!chcp` if extended\n" \
"characters don't display correctly.\n",
GetACP(), GetConsoleCP());
}
#endif
#endif
update_gpval_variables(3); /* update GPVAL_ variables available to user */
#ifdef VMS
/* initialise screen management routines for command recall */
if (status[1] = smg$create_virtual_keyboard(&vms_vkid) != SS$_NORMAL)
done(status[1]);
if (status[1] = smg$create_key_table(&vms_ktid) != SS$_NORMAL)
done(status[1]);
#endif /* VMS */
if (!SETJMP(command_line_env, 1)) {
/* first time */
interrupt_setup();
/* should move this stuff another initialisation routine,
* something like init_set() maybe */
get_user_env();
init_loadpath();
init_locale();
/* HBB: make sure all variables start in the same mode 'reset'
* would set them to. Since the axis variables aren't in
* initialized arrays any more, this is now necessary... */
reset_command();
init_color(); /* Initialization of color */
load_rcfile();
init_fit(); /* Initialization of fitting module */
if (interactive && term != 0) { /* not unknown */
#ifdef GNUPLOT_HISTORY
FPRINTF((stderr, "Before read_history\n"));
#if defined(HAVE_LIBREADLINE) || defined(HAVE_LIBEDITLINE)
expanded_history_filename = tilde_expand(GNUPLOT_HISTORY_FILE);
#else
expanded_history_filename = gp_strdup(GNUPLOT_HISTORY_FILE);
gp_expand_tilde(&expanded_history_filename);
#endif
FPRINTF((stderr, "expanded_history_filename = %s\n", expanded_history_filename));
read_history(expanded_history_filename);
{
/* BEGIN: Go local to get environment variable */
const char *temp_env = getenv ("GNUPLOT_HISTORY_SIZE");
if (temp_env)
gnuplot_history_size = strtol (temp_env, (char **) NULL, 10);
} /* END: Go local to get environment variable */
/*
* It is safe to ignore the return values of 'atexit()' and
* 'on_exit()'. In the worst case, there is no history of your
* currrent session and you have to type all again in your next
* session.
* This is the default behaviour (traditional reasons), too.
* In case you don't have one of these functions, or you don't
* want to use them, 'write_history()' is called directly.
*/
GP_ATEXIT(wrapper_for_write_history);
#endif /* GNUPLOT_HISTORY */
fprintf(stderr, "\nTerminal type set to '%s'\n", term->name);
} /* if (interactive && term != 0) */
} else {
/* come back here from int_error() */
if (interactive == FALSE)
exit_status = EXIT_FAILURE;
#ifdef HAVE_READLINE_RESET
else
{
/* reset properly readline after a SIGINT+longjmp */
rl_reset_after_signal ();
}
#endif
load_file_error(); /* if we were in load_file(), cleanup */
SET_CURSOR_ARROW;
#ifdef VMS
/* after catching interrupt */
/* VAX stuffs up stdout on SIGINT while writing to stdout,
so reopen stdout. */
if (gpoutfile == stdout) {
if ((stdout = freopen("SYS$OUTPUT", "w", stdout)) == NULL) {
/* couldn't reopen it so try opening it instead */
if ((stdout = fopen("SYS$OUTPUT", "w")) == NULL) {
/* don't use int_error here - causes infinite loop! */
fputs("Error opening SYS$OUTPUT as stdout\n", stderr);
}
}
gpoutfile = stdout;
}
#endif /* VMS */
if (!interactive && !noinputfiles) {
term_reset();
exit(EXIT_FAILURE); /* exit on non-interactive error */
}
}
if (argc > 1) {
#ifdef _Windows
TBOOLEAN noend = persist_cl;
#endif
/* load filenames given as arguments */
while (--argc > 0) {
++argv;
c_token = 0;
#ifdef _Windows
if (stricmp(*argv, "-noend") == 0 || stricmp(*argv, "/noend") == 0
|| stricmp(*argv, "-persist") == 0)
noend = TRUE;
else
#endif
if (!strncmp(*argv, "-persist", 2) || !strcmp(*argv, "--persist")) {
FPRINTF((stderr,"'persist' command line option recognized\n"));
} else if (strcmp(*argv, "-") == 0) {
interactive = TRUE;
while (!com_line());
interactive = FALSE;
} else if (strcmp(*argv, "-e") == 0) {
--argc; ++argv;
if (argc <= 0) {
fprintf(stderr, "syntax: gnuplot -e \"commands\"\n");
return 0;
}
do_string(*argv);
} else {
load_file(loadpath_fopen(*argv, "r"), gp_strdup(*argv), FALSE);
}
}
#ifdef _Windows
if (noend) {
interactive = TRUE;
while (!com_line());
}
#endif
} else {
/* take commands from stdin */
while (!com_line());
}
#if (defined(HAVE_LIBREADLINE) || defined(HAVE_LIBEDITLINE)) && defined(GNUPLOT_HISTORY)
#if !defined(HAVE_ATEXIT) && !defined(HAVE_ON_EXIT)
/* You should be here if you neither have 'atexit()' nor 'on_exit()' */
wrapper_for_write_history();
#endif /* !HAVE_ATEXIT && !HAVE_ON_EXIT */
#endif /* (HAVE_LIBREADLINE || HAVE_LIBEDITLINE) && GNUPLOT_HISTORY */
#ifdef OS2
RexxDeregisterSubcom("GNUPLOT", NULL);
#endif
/* HBB 20040223: Not all compilers like exit() to end main() */
/* exit(exit_status); */
return exit_status;
}
