static void
create_and_set_var( double val, char *prefix, char *base, char *suffix )
{
int len;
char *varname;
struct udvt_entry *udv_ptr;
t_value data;
Gcomplex( &data, val, 0.0 ); /* data is complex, real=val, imag=0.0 */
/* In case prefix (or suffix) is NULL - make them empty strings */
prefix = prefix ? prefix : "";
suffix = suffix ? suffix : "";
len = strlen(prefix) + strlen(base) + strlen(suffix) + 1;
varname = (char *)gp_alloc( len, "create_and_set_var" );
sprintf( varname, "%s%s%s", prefix, base, suffix );
/* Note that add_udv_by_name() checks if the name already exists, and
* returns the existing ptr if found. It also allocates memory for
* its own copy of the varname.
*/
udv_ptr = add_udv_by_name(varname);
udv_ptr->udv_value = data;
udv_ptr->udv_undef = FALSE;
free( varname );
}
/* execute a system call and return stream from STDOUT */
void
f_system(union argument *arg)
{
struct value val, result;
struct udvt_entry *errno_var;
char *output;
int output_len, ierr;
/* Retrieve parameters from top of stack */
pop(&val);
/* Make sure parameters are of the correct type */
if (val.type != STRING)
int_error(NO_CARET, "non-string argument to system()");
FPRINTF((stderr," f_system input = \"%s\"\n", val.v.string_val));
ierr = do_system_func(val.v.string_val, &output);
if ((errno_var = add_udv_by_name("ERRNO"))) {
errno_var->udv_undef = FALSE;
Ginteger(&errno_var->udv_value, ierr);
}
output_len = strlen(output);
/* chomp result */
if ( output_len > 0 && output[output_len-1] == '\n' )
output[output_len-1] = NUL;
FPRINTF((stderr," f_system result = \"%s\"\n", output));
push(Gstring(&result, output));
gpfree_string(&result); /* free output */
gpfree_string(&val); /* free command string */
}
/* find or add value and return pointer */
struct udvt_entry *
add_udv(int t_num)
{
char varname[MAX_ID_LEN+1];
copy_str(varname, t_num, MAX_ID_LEN);
return add_udv_by_name(varname);
}
/*
* In-line data blocks are implemented as a here-document:
* $FOO << EOD
* data line 1
* data line 2
* ...
* EOD
*
* The data block name must begin with $ followed by a letter.
* The string EOD is arbitrary; lines of data will be read from the input stream
* until the leading characters on the line match the given character string.
* No attempt is made to parse the data at the time it is read in.
*/
void
datablock_command()
{
FILE *fin;
char *name, *eod;
int nlines;
int nsize = 4;
struct udvt_entry *datablock;
char dataline[MAX_LINE_LEN+1];
if (!isletter(c_token+1))
int_error(c_token, "illegal datablock name");
/* Create or recycle a datablock with the requested name */
name = parse_datablock_name();
datablock = add_udv_by_name(name);
if (!datablock->udv_undef)
gpfree_datablock(&datablock->udv_value);
datablock->udv_undef = FALSE;
datablock->udv_value.type = DATABLOCK;
datablock->udv_value.v.data_array = NULL;
if (!equals(c_token, "<<") || !isletter(c_token+1))
int_error(c_token, "data block name must be followed by << EODmarker");
c_token++;
eod = gp_alloc(token[c_token].length +2, "datablock");
copy_str(&eod[0], c_token, token[c_token].length + 2);
c_token++;
/* Read in and store data lines until EOD */
fin = (lf_head == NULL) ? stdin : lf_head->fp;
if (!fin)
int_error(NO_CARET,"attempt to define data block from invalid context");
for (nlines = 0; fgets(dataline, MAX_LINE_LEN, fin); nlines++) {
int n;
if (!strncmp(eod, dataline, strlen(eod)))
break;
/* Allocate space for data lines plus at least 2 empty lines at the end. */
if (nlines >= nsize-4) {
nsize *= 2;
datablock->udv_value.v.data_array =
gp_realloc( datablock->udv_value.v.data_array,
nsize * sizeof(char *), "datablock");
memset(&datablock->udv_value.v.data_array[nlines], 0,
(nsize - nlines) * sizeof(char *));
}
/* Strip trailing newline character */
n = strlen(dataline);
if (n > 0 && dataline[n - 1] == '\n')
dataline[n - 1] = NUL;
datablock->udv_value.v.data_array[nlines] = gp_strdup(dataline);
}
inline_num += nlines + 1; /* Update position in input file */
free(eod);
return;
}
/* Variable assignment operator */
void
f_assign(union argument *arg)
{
struct value a, b;
(void) arg;
(void) pop(&b); /* new value */
(void) pop(&a); /* name of variable */
if (a.type == STRING) {
struct udvt_entry *udv;
if (!strncmp(a.v.string_val,"GPVAL_",6) || !strncmp(a.v.string_val,"MOUSE_",6))
int_error(NO_CARET,"Attempt to assign to a read-only variable");
udv = add_udv_by_name(a.v.string_val);
gpfree_string(&a);
if (!udv->udv_undef)
gpfree_string(&(udv->udv_value));
udv->udv_value = b;
udv->udv_undef = FALSE;
push(&b);
} else {
int_error(NO_CARET, "attempt to assign to something other than a named variable");
}
}
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;
}
/* pop from load_file state stack
FALSE if stack was empty
called by load_file and load_file_error */
TBOOLEAN
lf_pop()
{
LFS *lf;
int argindex;
struct udvt_entry *udv;
if (lf_head == NULL)
return (FALSE);
lf = lf_head;
if (lf->fp == NULL || lf->fp == stdin)
/* Do not close stdin in the case that "-" is named as a load file */
;
#if defined(PIPES)
else if (lf->name != NULL && lf->name[0] == '<')
pclose(lf->fp);
#endif
else
fclose(lf->fp);
/* call arguments are not relevant when invoked from do_string_and_free */
if (lf->cmdline == NULL) {
for (argindex = 0; argindex < 10; argindex++) {
if (call_args[argindex])
free(call_args[argindex]);
call_args[argindex] = lf->call_args[argindex];
}
call_argc = lf->call_argc;
/* Restore ARGC and ARG0 ... ARG9 */
if ((udv = get_udv_by_name("ARGC"))) {
Ginteger(&(udv->udv_value), call_argc);
}
if ((udv = get_udv_by_name("ARG0"))) {
gpfree_string(&(udv->udv_value));
Gstring(&(udv->udv_value),
(lf->prev && lf->prev->name) ? gp_strdup(lf->prev->name) : gp_strdup(""));
}
for (argindex = 1; argindex <= 9; argindex++) {
if ((udv = get_udv_by_name(argname[argindex]))) {
gpfree_string(&(udv->udv_value));
Gstring(&(udv->udv_value), gp_strdup(call_args[argindex-1]));
if (!call_args[argindex-1])
udv->udv_undef = TRUE;
}
}
}
interactive = lf->interactive;
inline_num = lf->inline_num;
add_udv_by_name("GPVAL_LINENO")->udv_value.v.int_val = inline_num;
if_depth = lf->if_depth;
if_condition = lf->if_condition;
if_open_for_else = lf->if_open_for_else;
/* Restore saved input state and free the copy */
if (lf->tokens) {
num_tokens = lf->num_tokens;
c_token = lf->c_token;
assert(token_table_size >= lf->num_tokens+1);
memcpy(token, lf->tokens,
(lf->num_tokens+1) * sizeof(struct lexical_unit));
free(lf->tokens);
}
if (lf->input_line) {
strcpy(gp_input_line, lf->input_line);
free(lf->input_line);
}
free(lf->name);
free(lf->cmdline);
lf_head = lf->prev;
free(lf);
return (TRUE);
}
/*
* load_file() is called from
* (1) the "load" command, no arguments substitution is done
* (2) the "call" command, arguments are substituted for $0, $1, etc.
* (3) on program entry to load initialization files (acts like "load")
* (4) to execute script files given on the command line (acts like "load")
* (5) to execute a single script file given with -c (acts like "call")
*/
void
load_file(FILE *fp, char *name, int calltype)
{
int len;
int start, left;
int more;
int stop = FALSE;
/* Provide a user-visible copy of the current line number in the input file */
udvt_entry *gpval_lineno = add_udv_by_name("GPVAL_LINENO");
Ginteger(&gpval_lineno->udv_value, 0);
gpval_lineno->udv_undef = FALSE;
lf_push(fp, name, NULL); /* save state for errors and recursion */
if (fp == (FILE *) NULL) {
int_error(NO_CARET, "Cannot open script file '%s'", name);
return; /* won't actually reach here */
}
if (fp == stdin) {
/* DBT 10-6-98 go interactive if "-" named as load file */
interactive = TRUE;
while (!com_line());
(void) lf_pop();
return;
}
/* We actually will read from a file */
prepare_call(calltype);
/* things to do after lf_push */
inline_num = 0;
/* go into non-interactive mode during load */
/* will be undone below, or in load_file_error */
interactive = FALSE;
while (!stop) { /* read all lines in file */
left = gp_input_line_len;
start = 0;
more = TRUE;
/* read one logical line */
while (more) {
if (fgets(&(gp_input_line[start]), left, fp) == (char *) NULL) {
stop = TRUE; /* EOF in file */
gp_input_line[start] = '\0';
more = FALSE;
} else {
inline_num++;
gpval_lineno->udv_value.v.int_val = inline_num; /* User visible copy */
len = strlen(gp_input_line) - 1;
if (gp_input_line[len] == '\n') { /* remove any newline */
gp_input_line[len] = '\0';
/* Look, len was 1-1 = 0 before, take care here! */
if (len > 0)
--len;
if (gp_input_line[len] == '\r') { /* remove any carriage return */
gp_input_line[len] = NUL;
if (len > 0)
--len;
}
} else if (len + 2 >= left) {
extend_input_line();
left = gp_input_line_len - len - 1;
start = len + 1;
continue; /* don't check for '\' */
}
if (gp_input_line[len] == '\\') {
/* line continuation */
start = len;
left = gp_input_line_len - start;
} else {
/* EAM May 2011 - handle multi-line bracketed clauses {...}.
* Introduces a requirement for scanner.c and scanner.h
* This code is redundant with part of do_line(),
* but do_line() assumes continuation lines come from stdin.
*/
/* macros in a clause are problematic, as they are */
/* only expanded once even if the clause is replayed */
string_expand_macros();
/* Strip off trailing comment and count curly braces */
num_tokens = scanner(&gp_input_line, &gp_input_line_len);
if (gp_input_line[token[num_tokens].start_index] == '#') {
gp_input_line[token[num_tokens].start_index] = NUL;
start = token[num_tokens].start_index;
left = gp_input_line_len - start;
}
/* Read additional lines if necessary to complete a
* bracketed clause {...}
*/
if (curly_brace_count < 0)
int_error(NO_CARET, "Unexpected }");
if (curly_brace_count > 0) {
if ((len + 4) > gp_input_line_len)
extend_input_line();
strcat(gp_input_line,";\n");
start = strlen(gp_input_line);
left = gp_input_line_len - start;
continue;
}
more = FALSE;
}
}
}
/* process line */
if (strlen(gp_input_line) > 0) {
#ifdef OLD_STYLE_CALL_ARGS
if (calltype == 2 || calltype == 5)
expand_call_args();
#endif
screen_ok = FALSE; /* make sure command line is echoed on error */
if (do_line())
stop = TRUE;
}
}
/* pop state */
(void) lf_pop(); /* also closes file fp */
}
static void
prepare_call(int calltype)
{
struct udvt_entry *udv;
int argindex;
if (calltype == 2) {
call_argc = 0;
while (!END_OF_COMMAND && call_argc <= 9) {
call_args[call_argc] = try_to_get_string();
if (!call_args[call_argc]) {
int save_token = c_token;
/* This catches call "file" STRINGVAR (expression) */
if (type_udv(c_token) == STRING) {
call_args[call_argc] = gp_strdup(add_udv(c_token)->udv_value.v.string_val);
c_token++;
/* Evaluates a parenthesized expression and store the result in a string */
} else if (equals(c_token, "(")) {
char val_as_string[32];
struct value a;
const_express(&a);
switch(a.type) {
case CMPLX: /* FIXME: More precision? Some way to provide a format? */
sprintf(val_as_string, "%g", a.v.cmplx_val.real);
call_args[call_argc] = gp_strdup(val_as_string);
break;
default:
int_error(save_token, "Unrecognized argument type");
break;
case INTGR:
sprintf(val_as_string, "%d", a.v.int_val);
call_args[call_argc] = gp_strdup(val_as_string);
break;
}
/* old (pre version 5) style wrapping of bare tokens as strings */
/* is still useful for passing unquoted numbers */
} else {
m_capture(&call_args[call_argc], c_token, c_token);
c_token++;
}
}
call_argc++;
}
lf_head->c_token = c_token;
if (!END_OF_COMMAND)
int_error(++c_token, "too many arguments for 'call <file>'");
} else if (calltype == 5) {
/* lf_push() moved our call arguments from call_args[] to lf->call_args[] */
/* call_argc was determined at program entry */
for (argindex = 0; argindex < 10; argindex++) {
call_args[argindex] = lf_head->call_args[argindex];
lf_head->call_args[argindex] = NULL; /* just to be safe */
}
} else {
/* "load" command has no arguments */
call_argc = 0;
}
/* Old-style "call" arguments were referenced as $0 ... $9 and $# */
/* New-style has ARG0 = script-name, ARG1 ... ARG9 and ARGC */
/* FIXME: If we defined these on entry, we could use get_udv* here */
udv = add_udv_by_name("ARGC");
Ginteger(&(udv->udv_value), call_argc);
udv->udv_undef = FALSE;
udv = add_udv_by_name("ARG0");
gpfree_string(&(udv->udv_value));
Gstring(&(udv->udv_value), gp_strdup(lf_head->name));
udv->udv_undef = FALSE;
for (argindex = 1; argindex <= 9; argindex++) {
char *arg = gp_strdup(call_args[argindex-1]);
udv = add_udv_by_name(argname[argindex]);
gpfree_string(&(udv->udv_value));
Gstring(&(udv->udv_value), arg ? arg : gp_strdup(""));
udv->udv_undef = FALSE;
}
}
int
main(int argc_orig, char **argv)
#endif
{
int i;
/* We want the current value of argc to persist across a LONGJMP from int_error().
* Without this the compiler may put it on the stack, which LONGJMP clobbers.
* Here we try make it a volatile variable that optimization will not affect.
* Why do we not have to do the same for argv? I don't know.
* But the test cases that broke with generic argc seem fine with generic argv.
*/
static volatile int argc;
argc = argc_orig;
#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__
if (setuid(getuid()) != 0) {
fprintf(stderr,"gnuplot: refusing to run at elevated privilege\n");
exit(EXIT_FAILURE);
}
#endif
/* 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
/* init progpath and get helpfile from executable directory */
#if defined(MSDOS) || defined(OS2)
{
char *s;
#ifdef __EMX__
_execname(progpath, sizeof(progpath));
#else
safe_strncpy(progpath, argv[0], sizeof(progpath));
#endif
/* convert '/' to '\\' */
for (s = progpath; *s != NUL; s++)
if (*s == DIRSEP2)
*s = DIRSEP1;
/* cut program name */
s = strrchr(progpath, DIRSEP1);
if (s != NULL)
s++;
else
s = progpath;
*s = NUL;
/* init HelpFile */
strcpy(HelpFile, progpath);
strcat(HelpFile, "gnuplot.gih");
/* remove trailing "bin/" from progpath */
if ((s != NULL) && (s - progpath >= 4)) {
s -= 4;
if (strncasecmp(s, "bin", 3) == 0)
*s = NUL;
}
}
#endif /* DJGPP */
#if (defined(PIPE_IPC) || defined(_WIN32)) && (defined(HAVE_LIBREADLINE) || (defined(HAVE_LIBEDITLINE) && defined(X11)))
/* Editline needs this to be set before the very first call to readline(). */
/* Support for rl_getc_function is broken for utf-8 in editline. Since it is only
really required for X11, disable this section when building without X11. */
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");
#if defined(HAVE_LIBREADLINE)
using_history();
#else
history_init();
#endif
#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"
" -s --slow\n"
" -d --default-settings\n"
" -c scriptfile ARG1 ARG2 ... \n"
" -e \"command1; command2; ...\"\n"
"gnuplot %s patchlevel %s\n",
gnuplot_version, gnuplot_patchlevel);
#ifdef DEVELOPMENT_VERSION
printf(
#ifdef DIST_CONTACT
"Report bugs to "DIST_CONTACT"\n"
" or %s\n",
#else
"Report bugs to %s\n",
#endif
bug_email);
#endif
return 0;
} else if (!strncmp(argv[i], "-persist", 2) || !strcmp(argv[i], "--persist")
#ifdef _WIN32
|| !stricmp(argv[i], "-noend") || !stricmp(argv[i], "/noend")
#endif
) {
persist_cl = TRUE;
} else if (!strncmp(argv[i], "-slow", 2) || !strcmp(argv[i], "--slow")) {
slow_font_startup = TRUE;
} else if (!strncmp(argv[i], "-d", 2) || !strcmp(argv[i], "--default-settings")) {
/* Skip local customization read from ~/.gnuplot */
skip_gnuplotrc = 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]
*/
if (setvbuf(stdout, (char *) NULL, _IOLBF, (size_t) 1024) != 0)
(void) fputs("Could not linebuffer stdout\n", stderr);
/* 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.
* Do any non-X platforms suffer from this problem?
* EAM - Jan 2013 YES.
*/
setvbuf(stdin, (char *) NULL, _IONBF, 0);
#endif
gpoutfile = stdout;
/* Initialize pre-loaded user variables */
/* "pi" is hard-wired as the first variable */
(void) add_udv_by_name("GNUTERM");
(void) add_udv_by_name("NaN");
init_constants();
udv_user_head = &(udv_NaN->next_udv);
init_memory();
interactive = FALSE;
/* April 2017: We used to call init_terminal() here, but now */
/* We defer initialization until error handling has been set up. */
# if defined(_WIN32) && !defined(WGP_CONSOLE)
interactive = TRUE;
# else
interactive = isatty(fileno(stdin));
# endif
/* Note: we want to know whether this is an interactive session so that we can
* decide whether or not to write status information to stderr. The old test
* for this was to see if (argc > 1) but the addition of optional command line
* switches broke this. What we really wanted to know was whether any of the
* command line arguments are file names or an explicit in-line "-e command".
*/
for (i = 1; i < argc; i++) {
# ifdef _WIN32
if (!stricmp(argv[i], "/noend"))
continue;
# endif
if ((argv[i][0] != '-') || (argv[i][1] == 'e') || (argv[i][1] == 'c') ) {
interactive = FALSE;
break;
}
}
/* Need this before show_version is called for the first time */
if (interactive)
show_version(stderr);
else
show_version(NULL); /* Only load GPVAL_COMPILE_OPTIONS */
update_gpval_variables(3); /* update GPVAL_ variables available to user */
#ifdef VMS
/* initialise screen management routines for command recall */
{
unsigned int ierror;
if (ierror = smg$create_virtual_keyboard(&vms_vkid) != SS$_NORMAL)
done(ierror);
if (ierror = smg$create_key_table(&vms_ktid) != SS$_NORMAL)
done(ierror);
}
#endif /* VMS */
if (!SETJMP(command_line_env, 1)) {
/* first time */
interrupt_setup();
get_user_env();
init_loadpath();
init_locale();
memset(&sm_palette, 0, sizeof(sm_palette));
init_fit(); /* Initialization of fitting module */
#ifdef READLINE
/* When using the built-in readline, we set the initial
encoding according to the locale as this is required
to properly handle keyboard input. */
init_encoding();
#endif
init_gadgets();
/* April 2017: Now that error handling is in place, it is safe parse
* GNUTERM during terminal initialization.
* atexit processing is done in reverse order. We want
* the generic terminal shutdown in term_reset to be executed before
* any terminal specific cleanup requested by individual terminals.
*/
init_terminal();
push_terminal(0); /* remember the initial terminal */
gp_atexit(term_reset);
/* Execute commands in ~/.gnuplot */
init_session();
if (interactive && term != 0) { /* not unknown */
#ifdef GNUPLOT_HISTORY
#if (defined(HAVE_LIBREADLINE) || defined(HAVE_LIBEDITLINE)) && !defined(_WIN32)
expanded_history_filename = tilde_expand(GNUPLOT_HISTORY_FILE);
#else
expanded_history_filename = gp_strdup(GNUPLOT_HISTORY_FILE);
gp_expand_tilde(&expanded_history_filename);
#endif
read_history(expanded_history_filename);
/*
* 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.
*/
gp_atexit(wrapper_for_write_history);
#endif /* GNUPLOT_HISTORY */
#if defined(READLINE) && defined(WGP_CONSOLE)
fprintf(stderr, "Encoding set to '%s'.\n", encoding_names[encoding]);
#endif
} /* if (interactive && term != 0) */
} else {
/* come back here from int_error() */
if (!successful_initialization) {
/* Only print the warning once */
successful_initialization = TRUE;
fprintf(stderr,"WARNING: Error during initialization\n\n");
}
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 */
/* Why a goto? Because we exited the loop below via int_error */
/* using LONGJMP. The compiler was not expecting this, and */
/* "optimized" the handling of argc and argv such that simply */
/* entering the loop again from the top finds them messed up. */
/* If we reenter the loop via a goto then there is some hope */
/* that code reordering does not hurt us. */
if (reading_from_dash && interactive)
goto RECOVER_FROM_ERROR_IN_DASH;
reading_from_dash = FALSE;
if (!interactive && !noinputfiles) {
term_reset();
gp_exit(EXIT_FAILURE); /* exit on non-interactive error */
}
}
/* load filenames given as arguments */
while (--argc > 0) {
++argv;
c_token = 0;
if (!strncmp(*argv, "-persist", 2) || !strcmp(*argv, "--persist")
#ifdef _WIN32
|| !stricmp(*argv, "-noend") || !stricmp(*argv, "/noend")
#endif
) {
FPRINTF((stderr,"'persist' command line option recognized\n"));
} else if (strcmp(*argv, "-") == 0) {
#if defined(_WIN32) && !defined(WGP_CONSOLE)
TextShow(&textwin);
interactive = TRUE;
#else
interactive = isatty(fileno(stdin));
#endif
RECOVER_FROM_ERROR_IN_DASH:
reading_from_dash = TRUE;
while (!com_line());
reading_from_dash = FALSE;
interactive = FALSE;
noinputfiles = FALSE;
} else if (strcmp(*argv, "-e") == 0) {
int save_state = interactive;
--argc; ++argv;
if (argc <= 0) {
fprintf(stderr, "syntax: gnuplot -e \"commands\"\n");
return 0;
}
interactive = FALSE;
noinputfiles = FALSE;
do_string(*argv);
interactive = save_state;
} else if (!strncmp(*argv, "-slow", 2) || !strcmp(*argv, "--slow")) {
slow_font_startup = TRUE;
} else if (!strncmp(*argv, "-d", 2) || !strcmp(*argv, "--default-settings")) {
/* Ignore this; it already had its effect */
FPRINTF((stderr, "ignoring -d\n"));
} else if (strcmp(*argv, "-c") == 0) {
/* Pass command line arguments to the gnuplot script in the next
* argument. This consumes the remainder of the command line
*/
interactive = FALSE;
noinputfiles = FALSE;
--argc; ++argv;
if (argc <= 0) {
fprintf(stderr, "syntax: gnuplot -c scriptname args\n");
gp_exit(EXIT_FAILURE);
}
call_argc = GPMIN(9, argc - 1);
for (i=0; i<=call_argc; i++) {
/* Need to stash argv[i] somewhere visible to load_file() */
call_args[i] = gp_strdup(argv[i+1]);
}
load_file(loadpath_fopen(*argv, "r"), gp_strdup(*argv), 5);
gp_exit(EXIT_SUCCESS);
} else if (*argv[0] == '-') {
fprintf(stderr, "unrecognized option %s\n", *argv);
} else {
interactive = FALSE;
noinputfiles = FALSE;
load_file(loadpath_fopen(*argv, "r"), gp_strdup(*argv), 4);
}
}
/* take commands from stdin */
if (noinputfiles) {
while (!com_line())
ctrlc_flag = FALSE; /* reset asynchronous Ctrl-C flag */
}
#ifdef _WIN32
/* On Windows, handle 'persist' by keeping the main input loop running (windows/wxt), */
/* but only if there are any windows open. Note that qt handles this properly. */
if (persist_cl) {
if (WinAnyWindowOpen()) {
#ifdef WGP_CONSOLE
if (!interactive) {
/* no further input from pipe */
while (WinAnyWindowOpen())
win_sleep(100);
} else
#endif
{
interactive = TRUE;
while (!com_line())
ctrlc_flag = FALSE; /* reset asynchronous Ctrl-C flag */
interactive = FALSE;
}
}
}
#endif
#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); */
#if ! defined(_WIN32)
/* Windows does the cleanup later */
gp_exit_cleanup();
#endif
return exit_status;
}