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#ifndef lint
static char *RCSid = "$Id: plot.c,v 1.85 1997/07/22 23:20:47 drd Exp $";
#endif
/* GNUPLOT - plot.c */
/*
* Copyright (C) 1986 - 1993, 1997 Thomas Williams, Colin Kelley
*
* Permission to use, copy, and distribute this software and its
* documentation for any purpose with or without fee is hereby granted,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation.
*
* Permission to modify the software is granted, but not the right to
* distribute the modified code. Modifications are to be distributed
* as patches to released version.
*
* This software is provided "as is" without express or implied warranty.
*
*
* AUTHORS
*
* Original Software:
* Thomas Williams, Colin Kelley.
*
* Gnuplot 2.0 additions:
* Russell Lang, Dave Kotz, John Campbell.
*
* Gnuplot 3.0 additions:
* Gershon Elber and many others.
*
* There is a mailing list for gnuplot users. Note, however, that the
* newsgroup
* comp.graphics.apps.gnuplot
* is identical to the mailing list (they
* both carry the same set of messages). We prefer that you read the
* messages through that newsgroup, to subscribing to the mailing list.
* (If you can read that newsgroup, and are already on the mailing list,
* please send a message to majordomo@dartmouth.edu, asking to be
* removed from the mailing list.)
*
* The address for mailing to list members is
* info-gnuplot@dartmouth.edu
* and for mailing administrative requests is
* majordomo@dartmouth.edu
* The mailing list for bug reports is
* bug-gnuplot@dartmouth.edu
* The list of those interested in beta-test versions is
* info-gnuplot-beta@dartmouth.edu
*/
#include <signal.h>
#include "plot.h"
#include "fit.h"
#include "setshow.h"
#include "fnproto.h"
#include <setjmp.h>
#if defined(MSDOS) || defined(DOS386)
#include <io.h>
#endif
/* HBB: for the control87 function, if used with DJGPP V1: */
#if defined(DJGPP) && (DJGPP!=2)
#include "ctrl87.h"
#endif
/* HBB: for isatty() */
#if (DJGPP==2)
#include <unistd.h>
#endif
#ifdef vms
#ifndef __GNUC__
#include <unixio.h>
#endif
#include <smgdef.h>
extern int vms_vkid;
extern smg$create_virtual_keyboard();
#endif
#ifdef AMIGA_SC_6_1
#include <proto/dos.h>
#endif
#ifdef _Windows
#include <windows.h>
#ifndef SIGINT
#define SIGINT 2 /* for MSC */
#endif
#endif
extern FILE *outfile;
TBOOLEAN interactive = TRUE; /* FALSE if stdin not a terminal */
TBOOLEAN noinputfiles = TRUE; /* FALSE if there are script files */
/* these 2 could be in misc.c, but are here with all the other globals */
TBOOLEAN do_load_arg_substitution = FALSE;
char *call_args[10] = {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL};
char *infile_name = NULL; /* name of command file; NULL if terminal */
#ifdef GNU_READLINE
extern char* rl_readline_name;
extern int rl_complete_with_tilde_expansion;
#endif
#if defined(__TURBOC__) && (defined(MSDOS) || defined(DOS386)) /* patch to get home dir, see command.c */
#include <string.h>
char HelpFile[80] ;
#endif /* - DJL */
#ifndef STDOUT
#define STDOUT 1
#endif
/* a longjmp buffer to get back to the command line */
#ifdef _Windows
static jmp_buf far command_line_env;
#else
static jmp_buf command_line_env;
#endif
int main __PROTO((int argc, char **argv));
static void load_rcfile __PROTO((void));
RETSIGTYPE inter __PROTO((int anint));
struct ft_entry GPFAR ft[] = { /* built-in function table */
/* internal functions: */
{"push", (FUNC_PTR)f_push}, {"pushc", (FUNC_PTR)f_pushc},
{"pushd1", (FUNC_PTR)f_pushd1}, {"pushd2", (FUNC_PTR)f_pushd2},
{"pushd", (FUNC_PTR)f_pushd}, {"call", (FUNC_PTR)f_call},
{"calln", (FUNC_PTR)f_calln}, {"lnot", (FUNC_PTR)f_lnot},
{"bnot", (FUNC_PTR)f_bnot}, {"uminus", (FUNC_PTR)f_uminus},
{"lor", (FUNC_PTR)f_lor}, {"land", (FUNC_PTR)f_land},
{"bor", (FUNC_PTR)f_bor}, {"xor", (FUNC_PTR)f_xor},
{"band", (FUNC_PTR)f_band}, {"eq", (FUNC_PTR)f_eq},
{"ne", (FUNC_PTR)f_ne}, {"gt", (FUNC_PTR)f_gt},
{"lt", (FUNC_PTR)f_lt}, {"ge", (FUNC_PTR)f_ge},
{"le", (FUNC_PTR)f_le}, {"plus", (FUNC_PTR)f_plus},
{"minus", (FUNC_PTR)f_minus}, {"mult", (FUNC_PTR)f_mult},
{"div", (FUNC_PTR)f_div}, {"mod", (FUNC_PTR)f_mod},
{"power", (FUNC_PTR)f_power}, {"factorial", (FUNC_PTR)f_factorial},
{"bool", (FUNC_PTR)f_bool},
{"dollars", (FUNC_PTR)f_dollars}, /* for using extension */
{"jump", (FUNC_PTR) f_jump}, {"jumpz", (FUNC_PTR) f_jumpz},
{"jumpnz",(FUNC_PTR) f_jumpnz}, {"jtern", (FUNC_PTR) f_jtern},
/* standard functions: */
{"real", (FUNC_PTR)f_real}, {"imag", (FUNC_PTR)f_imag},
{"arg", (FUNC_PTR)f_arg}, {"conjg", (FUNC_PTR)f_conjg},
{"sin", (FUNC_PTR)f_sin}, {"cos", (FUNC_PTR)f_cos},
{"tan", (FUNC_PTR)f_tan}, {"asin", (FUNC_PTR)f_asin},
{"acos", (FUNC_PTR)f_acos}, {"atan", (FUNC_PTR)f_atan},
{"atan2", (FUNC_PTR)f_atan2}, {"sinh", (FUNC_PTR)f_sinh},
{"cosh", (FUNC_PTR)f_cosh}, {"tanh", (FUNC_PTR)f_tanh},
{"int", (FUNC_PTR)f_int}, {"abs", (FUNC_PTR)f_abs},
{"sgn", (FUNC_PTR)f_sgn}, {"sqrt", (FUNC_PTR)f_sqrt},
{"exp", (FUNC_PTR)f_exp}, {"log10", (FUNC_PTR)f_log10},
{"log", (FUNC_PTR)f_log}, {"besj0", (FUNC_PTR)f_besj0},
{"besj1", (FUNC_PTR)f_besj1}, {"besy0", (FUNC_PTR)f_besy0},
{"besy1", (FUNC_PTR)f_besy1}, {"erf", (FUNC_PTR)f_erf},
{"erfc", (FUNC_PTR)f_erfc}, {"gamma", (FUNC_PTR)f_gamma},
{"lgamma", (FUNC_PTR)f_lgamma}, {"ibeta", (FUNC_PTR)f_ibeta},
{"igamma", (FUNC_PTR)f_igamma}, {"rand", (FUNC_PTR)f_rand},
{"floor", (FUNC_PTR)f_floor}, {"ceil", (FUNC_PTR)f_ceil},
{"norm", (FUNC_PTR)f_normal}, /* XXX-JG */
{"inverf", (FUNC_PTR)f_inverse_erf}, /* XXX-JG */
{"invnorm", (FUNC_PTR)f_inverse_normal}, /* XXX-JG */
{"asinh", (FUNC_PTR)f_asinh},
{"acosh", (FUNC_PTR)f_acosh},
{"atanh", (FUNC_PTR)f_atanh},
{"column", (FUNC_PTR)f_column}, /* for using */
{"valid", (FUNC_PTR)f_valid}, /* for using */
{"timecolumn", (FUNC_PTR)f_timecolumn}, /* for using */
{"tm_sec", (FUNC_PTR) f_tmsec}, /* for timeseries */
{"tm_min", (FUNC_PTR) f_tmmin}, /* for timeseries */
{"tm_hour", (FUNC_PTR) f_tmhour}, /* for timeseries */
{"tm_mday", (FUNC_PTR) f_tmmday}, /* for timeseries */
{"tm_mon", (FUNC_PTR) f_tmmon}, /* for timeseries */
{"tm_year", (FUNC_PTR) f_tmyear}, /* for timeseries */
{"tm_wday", (FUNC_PTR) f_tmwday}, /* for timeseries */
{"tm_yday", (FUNC_PTR) f_tmyday}, /* for timeseries */
{NULL, NULL}
};
static struct udvt_entry udv_pi = {NULL, "pi",FALSE};
/* first in linked list */
struct udvt_entry *first_udv = &udv_pi;
struct udft_entry *first_udf = NULL;
#ifdef vms
#define HOME "sys$login:"
#else /* vms */
#if defined(MSDOS) || defined(AMIGA_AC_5) || defined(AMIGA_SC_6_1) || defined(ATARI) || defined(OS2) || defined(_Windows) || defined(DOS386)
#define HOME "GNUPLOT"
#else /* MSDOS || AMIGA || ATARI || OS2 || _Windows || defined(DOS386)*/
#define HOME "HOME"
#endif /* MSDOS || AMIGA || ATARI || OS2 || _Windows || defined(DOS386)*/
#endif /* vms */
#ifdef OS2
#define INCL_DOS
#define INCL_REXXSAA
#include <stdlib.h>
#include <os2.h>
#include <process.h>
ULONG RexxInterface( PRXSTRING, PUSHORT, PRXSTRING ) ;
int ExecuteMacro( char* , int) ;
#endif
#if defined(unix) || defined(AMIGA_AC_5) || defined(AMIGA_SC_6_1) || defined(__amigaos__) || defined(OSK)
#define PLOTRC ".gnuplot"
#else /* AMIGA || unix */
#define PLOTRC "gnuplot.ini"
#endif /* AMIGA || unix */
#if defined(ATARI) || defined(MTOS)
void appl_exit(void);
void MTOS_open_pipe(void);
extern int aesid;
#endif
RETSIGTYPE inter (anint)
int anint;
{
#ifdef OS2
(void) signal(anint, SIG_ACK);
#else
(void) signal(SIGINT, (sigfunc)inter);
#endif
#ifndef DOSX286
(void) signal(SIGFPE, SIG_DFL); /* turn off FPE trapping */
#endif
#ifdef OS2
PM_intc_cleanup() ;
#else
term_reset();
(void) putc('\n',stderr);
longjmp(command_line_env, TRUE); /* return to prompt */
#endif
}
/* a wrapper for longjmp so we can keep everything local */
void bail_to_command_line()
{
longjmp(command_line_env, TRUE);
}
#if defined(_Windows) || defined(_Macintosh)
int gnu_main(argc, argv)
#else
int main(argc, argv)
#endif
int argc;
char **argv;
{
#ifdef LINUXVGA
LINUX_setup();
#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 */
#if defined(DJGPP) /* HBB: disable all floating point exceptions, just keep running... */
_control87(MCW_EM, MCW_EM);
#endif
#if defined(OS2)
if (_osmode==OS2_MODE) {
PM_setup() ;
RexxRegisterSubcomExe( "GNUPLOT", (PFN) RexxInterface, NULL ) ;
}
#endif
#ifdef OSK /* malloc large blocks, otherwise problems with fragmented mem */
_mallocmin (102400);
#endif
#ifdef MALLOCDEBUG
malloc_debug(7);
#endif
#ifndef DOSX286
#ifndef _Windows
#if defined (__TURBOC__) && (defined (MSDOS) || defined(DOS386))
strcpy (HelpFile,argv[0]) ; /* got helpfile from */
strcpy (strrchr(HelpFile,'\\'),"\\gnuplot.gih") ; /* home directory */
/* - DJL */
#endif
#endif
#endif
#ifdef VMS
unsigned int status[2] = {1, 0};
#endif
#ifdef GNU_READLINE
rl_readline_name = argv[0];
rl_complete_with_tilde_expansion = 1;
#endif
#ifdef X11
{ extern int X11_args __PROTO((int argc, char *argv[]));
int n = X11_args(argc, argv);
argv += n;
argc -= n;
}
#endif
#ifdef apollo
apollo_pfm_catch();
#endif
/* moved to ATARI_init in atariaes.trm */
/* #ifdef ATARI
void application_init(void);
application_init();
#endif */
#ifdef MTOS
MTOS_open_pipe();
#endif
setbuf(stderr,(char *)NULL);
#ifndef NO_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.
* 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)
fprintf (stderr, "Could not linebuffer stdout\n");
#endif
outfile = stdout;
(void) Gcomplex(&udv_pi.udv_value, Pi, 0.0);
init_memory();
interactive = FALSE;
init_terminal(); /* can set term type if it likes */
#ifdef AMIGA_SC_6_1
if (IsInteractive(Input()) == DOSTRUE) interactive = TRUE;
else interactive = FALSE;
#else
#if (defined(__MSC__) && defined(_Windows)) || defined(__WIN32__)
interactive = TRUE;
#else
interactive = isatty(fileno(stdin));
#endif
#endif
if (argc > 1)
interactive = noinputfiles = FALSE;
else
noinputfiles = TRUE;
if (interactive)
show_version();
#ifdef vms /* initialise screen management routines for command recall */
if (status[1] = smg$create_virtual_keyboard(&vms_vkid) != SS$_NORMAL)
done(status[1]);
#endif
if (!setjmp(command_line_env)) {
/* first time */
interrupt_setup();
load_rcfile();
init_fit (); /* Initialization of fitting module */
if (interactive && term != 0) /* not unknown */
fprintf(stderr, "\nTerminal type set to '%s'\n",
term->name);
} else {
/* come back here from int_error() */
#ifdef AMIGA_SC_6_1
(void) rawcon(0);
#endif
load_file_error(); /* if we were in load_file(), cleanup */
#ifdef _Windows
SetCursor(LoadCursor((HINSTANCE)NULL, IDC_ARROW));
#endif
#ifdef vms
/* after catching interrupt */
/* VAX stuffs up stdout on SIGINT while writing to stdout,
so reopen stdout. */
if (outfile == stdout) {
if ( (stdout = freopen("SYS$OUTPUT","w",stdout)) == NULL) {
/* couldn't reopen it so try opening it instead */
if ( (stdout = fopen("SYS$OUTPUT","w")) == NULL) {
/* don't use int_error here - causes infinite loop! */
fprintf(stderr,"Error opening SYS$OUTPUT as stdout\n");
}
}
outfile = stdout;
}
#endif /* VMS */
if (!interactive && !noinputfiles) {
term_reset();
#if defined(ATARI) || defined(MTOS)
if (aesid > -1) atexit(appl_exit);
#endif
return(IO_ERROR); /* exit on non-interactive error */
}
}
if (argc > 1) {
#ifdef _Windows
int noend=0;
#endif
/* load filenames given as arguments */
while (--argc > 0) {
++argv;
c_token = NO_CARET; /* in case of file not found */
#ifdef _Windows
if (stricmp(*argv,"-noend")==0 || stricmp(*argv,"/noend")==0)
noend=1;
else
#endif
load_file(fopen(*argv,"r"), *argv, FALSE);
}
#ifdef _Windows
if (noend)
{
interactive = TRUE;
while(!com_line());
}
#endif
} else {
/* take commands from stdin */
while(!com_line());
}
term_reset();
#ifdef OS2
if (_osmode==OS2_MODE)
RexxDeregisterSubcom( "GNUPLOT", NULL ) ;
#endif
#if defined(ATARI) || defined(MTOS)
if (aesid > -1) atexit(appl_exit);
#endif
return(IO_SUCCESS);
}
#if (defined(ATARI) && defined(__PUREC__)) || (defined(MTOS) && defined(__PUREC__))
#include <math.h>
int purec_matherr(struct exception *e)
{ char *c;
switch (e->type) {
case DOMAIN: c = "domain error"; break;
case SING : c = "argument singularity"; break;
case OVERFLOW: c = "overflow range"; break;
case UNDERFLOW: c = "underflow range"; break;
default: c = "(unknown error"; break;
}
fprintf(stderr, "math exception : %s\n", c);
fprintf(stderr, " name : %s\n", e->name);
fprintf(stderr, " arg 1: %e\n", e->arg1);
fprintf(stderr, " arg 2: %e\n", e->arg2);
fprintf(stderr, " ret : %e\n", e->retval);
return 1;
}
#endif
/* Set up to catch interrupts */
void interrupt_setup()
{
#ifdef __PUREC__
setmatherr(purec_matherr);
#endif
(void) signal(SIGINT, (sigfunc)inter);
/* ignore pipe errors, this might happen with set output "|head" */
#ifdef SIGPIPE
(void) signal(SIGPIPE, SIG_IGN);
#endif /* SIGPIPE */
}
/* Look for a gnuplot start-up file */
static void load_rcfile()
{
register FILE *plotrc;
char home[80];
char rcfile[sizeof(PLOTRC)+80];
#if defined(ATARI) || defined(MTOS)
#include <support.h>
char *ini_ptr;
char const *const ext[] = {NULL};
#endif
/* Look for a gnuplot init file in . or home directory */
#ifdef vms
(void) strcpy(home,HOME);
#else /* vms */
char *tmp_home=getenv(HOME);
char *p; /* points to last char in home path, or to \0, if none */
char c='\0';/* character that should be added, or \0, if none */
if(tmp_home) {
strcpy(home,tmp_home);
if( strlen(home) ) p = &home[strlen(home)-1];
else p = home;
#if defined(MSDOS) || defined(ATARI) || defined( OS2 ) || defined(_Windows) || defined(DOS386)
if( *p!='\\' && *p!='\0' ) c='\\';
#else
#if defined(MTOS)
if( *p!='\\' && *p!='/' && *p!='\0' ) c='\\';
#else
#if defined(AMIGA_AC_5)
if( *p!='/' && *p!=':' && *p!='\0' ) c='/';
#else /* that leaves unix and OSK */
c='/';
#endif
#endif
#endif
if(c) {
if(*p) p++;
*p++=c;
*p='\0';
}
}
#endif /* vms */
#ifdef NOCWDRC
/* inhibit check of init file in current directory for security reasons */
{
#else
(void) strcpy(rcfile, PLOTRC);
plotrc = fopen(rcfile,"r");
if (plotrc == (FILE *)NULL) {
#endif
#ifndef vms
if( tmp_home ) {
#endif
(void) sprintf(rcfile, "%s%s", home, PLOTRC);
plotrc = fopen(rcfile,"r");
#if defined(ATARI) || defined(MTOS)
}
if (plotrc == (FILE *)NULL) {
ini_ptr = findfile(PLOTRC,getenv("GNUPLOTPATH"),ext);
if (ini_ptr) plotrc = fopen(ini_ptr,"r");
}
#endif
#if !defined(vms) && !defined(ATARI) && !defined(MTOS)
} else
plotrc=NULL;
#endif
}
if (plotrc)
load_file(plotrc, rcfile, FALSE);
}
#ifdef OS2
int ExecuteMacro( char *argv, int namelength )
{
RXSTRING rxRc ;
RXSTRING rxArg ;
char pszRc[256] ;
char pszName[256] ;
short sRc ;
HAB hab ;
int rc ;
strncpy( pszName, argv, namelength ) ;
pszName[namelength]='\0';
MAKERXSTRING( rxRc, pszRc, 256 ) ;
MAKERXSTRING( rxArg, argv, strlen(argv) ) ;
rc = RexxStart( 1,
&rxArg,
pszName,
NULL,
"GNUPLOT",
RXCOMMAND,
NULL,
&sRc,
&rxRc ) ;
if(rc==-4)rc=0; /*run was cancelled-don't give error message*/
return rc ;
}
ULONG RexxInterface( PRXSTRING rxCmd, PUSHORT pusErr, PRXSTRING rxRc )
/*
** Rexx command line interface
*/
{
int iCmd ;
int rc ;
static jmp_buf keepenv;
memcpy( keepenv, env, sizeof(jmp_buf)) ;
if (!setjmp(command_line_env)) {
set_input_line( rxCmd->strptr, rxCmd->strlength ) ;
rc = do_line() ;
*pusErr = RXSUBCOM_OK ;
rxRc->strptr[0] = rc + '0' ;
rxRc->strptr[1] = '\0' ;
rxRc->strlength = strlen( rxRc->strptr ) ;
} else {
*pusErr = RXSUBCOM_ERROR ;
RexxSetHalt( getpid(), 1 ) ;
}
memcpy( env, keepenv, sizeof(jmp_buf)) ;
return 0 ;
}
#endif
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