forked from gnuplot/gnuplot-old
/
command.c
1608 lines (1433 loc) · 41.5 KB
/
command.c
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#ifndef lint
static char *RCSid = "$Id: command.c,v 1.1.1.2 1998/04/15 19:22:10 lhecking Exp $";
#endif
/* GNUPLOT - command.c */
/*[
* Copyright 1986 - 1993, 1998 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 complete modified source code. Modifications are to
* be distributed as patches to the released version. Permission to
* distribute binaries produced by compiling modified sources is granted,
* provided you
* 1. distribute the corresponding source modifications from the
* released version in the form of a patch file along with the binaries,
* 2. add special version identification to distinguish your version
* in addition to the base release version number,
* 3. provide your name and address as the primary contact for the
* support of your modified version, and
* 4. retain our contact information in regard to use of the base
* software.
* Permission to distribute the released version of the source code along
* with corresponding source modifications in the form of a patch file is
* granted with same provisions 2 through 4 for binary distributions.
*
* This software is provided "as is" without express or implied warranty
* to the extent permitted by applicable law.
]*/
/*
* Changes:
*
* Feb 5, 1992 Jack Veenstra (veenstra@cs.rochester.edu) Added support to
* filter data values read from a file through a user-defined function before
* plotting. The keyword "thru" was added to the "plot" command. Example
* syntax: f(x) = x / 100 plot "test.data" thru f(x) This example divides all
* the y values by 100 before plotting. The filter function processes the
* data before any log-scaling occurs. This capability should be generalized
* to filter x values as well and a similar feature should be added to the
* "splot" command.
*
* 19 September 1992 Lawrence Crowl (crowl@cs.orst.edu)
* Added user-specified bases for log scaling.
*/
#include <math.h>
#include <ctype.h>
#include <assert.h>
#ifdef VMS
#include <signal.h> /* for sleep() */
#endif
#if defined(MSDOS) || defined(DOS386)
#ifdef DJGPP
#include <dos.h>
#include <dir.h> /* HBB: for setdisk() */
#else
#include <process.h>
#endif
#ifdef __ZTC__
#define HAVE_SLEEP 1
#define P_WAIT 0
#else
#ifdef __TURBOC__
#ifndef _Windows
#define HAVE_SLEEP 1
#include <conio.h>
#include <dir.h> /* setdisk() */
extern unsigned _stklen = 16394;/* increase stack size */
extern char HelpFile[80] ; /* patch for do_help - DJL */
#endif
#else /* must be MSC */
#if !defined(__EMX__) && !defined(DJGPP)
#ifdef __MSC__
#include <direct.h> /* for _chdrive() */
#endif /* __MSC__ */
#endif /* !__EMX__ && !DJGPP */
#endif /* TURBOC */
#endif /* ZTC */
#endif /* MSDOS */
#ifdef _Windows
#ifdef __MSC__
#include <direct.h> /* for _chdrive() */
#endif
#endif /* _Windows */
#ifndef GP_SLEEP
# ifdef __ZTC__
# define GP_SLEEP(delay) usleep ((unsigned long) (delay))
# else
# define GP_SLEEP(delay) sleep ((unsigned int) (delay))
# endif
#endif
#include "plot.h"
#include "setshow.h"
#include "fit.h"
#include "binary.h"
#ifndef _Windows
#include "help.h"
#else
#define MAXSTR 255
#endif
#if defined(ATARI) || defined(MTOS)
#ifdef __PUREC__
#include <ext.h>
#include <tos.h>
#include <aes.h>
/* #include <float.h> - already in plot.h */
#else
#include <osbind.h>
#include <aesbind.h>
#include <support.h>
#endif /* __PUREC__ */
#endif /* ATARI || MTOS */
#ifndef HAVE_SLEEP
/* POSIX.1 synopsis */
unsigned int sleep __PROTO((unsigned int));
#endif
#ifndef STDOUT
#define STDOUT 1
#endif
#ifndef HELPFILE
#if defined( MSDOS ) || defined( OS2 ) || defined(DOS386)
#define HELPFILE "gnuplot.gih"
#else
#ifdef AMIGA_SC_6_1
#define HELPFILE "S:gnuplot.gih"
#else
#define HELPFILE "docs/gnuplot.gih" /* changed by makefile */
#endif /* AMIGA_SC_6_1 */
#endif
#endif /* HELPFILE */
#ifdef _Windows
#include <windows.h>
#ifdef __MSC__
#include <malloc.h>
#else
#include <alloc.h>
#include <dir.h> /* setdisk() */
#endif
#include "win/wgnuplib.h"
extern TW textwin;
extern LPSTR winhelpname;
extern void screen_dump(void); /* in term/win.trm */
extern int Pause(LPSTR mess); /* in winmain.c */
#endif
#define inrange(z,min,max) ((min<max) ? ((z>=min)&&(z<=max)) : ((z>=max)&&(z<=min)) )
/* purec_sscanf is now in datafile.c */
#ifdef __PUREC__
# define sscanf purec_sscanf
#endif
#ifdef OS2
/* emx has getcwd, chdir that can handle drive names */
#define chdir _chdir2
#endif /* OS2 */
#ifdef vms
int vms_vkid; /* Virtual keyboard id */
#endif
/* static prototypes */
static void replotrequest __PROTO((void));
static int command __PROTO((void));
static int read_line __PROTO((char *prompt));
static void do_shell __PROTO((void));
static void do_help __PROTO((int toplevel));
static void do_system __PROTO((void));
static int changedir __PROTO((char *path));
/* input data, parsing variables */
#ifdef AMIGA_SC_6_1
__far int num_tokens, c_token;
#else
int num_tokens, c_token;
#endif
extern TBOOLEAN do_load_arg_substitution;
struct lexical_unit *token=NULL;
int token_table_size=0;
char *input_line=NULL;
int input_line_len=0;
int inline_num = 0; /* input line number */
/* things shared by plot2d.c and plot3d.c are here, for historical reasons */
double min_array[AXIS_ARRAY_SIZE], max_array[AXIS_ARRAY_SIZE];
int auto_array[AXIS_ARRAY_SIZE];
TBOOLEAN log_array[AXIS_ARRAY_SIZE];
double base_array[AXIS_ARRAY_SIZE];
double log_base_array[AXIS_ARRAY_SIZE];
struct udft_entry *dummy_func=NULL; /* NULL means no dummy vars active */
char c_dummy_var[MAX_NUM_VAR][MAX_ID_LEN + 1]; /* current dummy vars */
/* support for replot command */
char *replot_line=NULL;
int plot_token; /* start of 'plot' command */
/* If last plot was a 3d one. */
TBOOLEAN is_3d_plot = FALSE;
#define Inc_c_token if (++c_token >= num_tokens) \
int_error ("Syntax error", c_token);
/* support for dynamic size of input line */
void extend_input_line()
{
if(input_line_len==0) {
/* first time */
input_line=gp_alloc(MAX_LINE_LEN, "input_line");
input_line_len=MAX_LINE_LEN;
input_line[0]='\0';
} else {
input_line=gp_realloc(input_line, input_line_len+MAX_LINE_LEN, "extend input line");
input_line_len+=MAX_LINE_LEN;
#ifdef DEBUG_STR
fprintf(stderr, "extending input line to %d chars\n", input_line_len);
#endif
}
}
void extend_token_table()
{
if(token_table_size==0) {
/* first time */
token=(struct lexical_unit *)gp_alloc(MAX_TOKENS*sizeof(struct lexical_unit), "token table");
token_table_size=MAX_TOKENS;
} else {
token=gp_realloc(token, (token_table_size+MAX_TOKENS)*sizeof(struct lexical_unit), "extend token table");
token_table_size+=MAX_TOKENS;
#ifdef DEBUG_STR
fprintf(stderr, "extending token table to %d elements\n", token_table_size);
#endif
}
}
void init_memory()
{
extend_input_line();
extend_token_table();
replot_line=gp_alloc(1, "string");
*replot_line='\0';
}
int com_line()
{
if (multiplot) {
/* calls int_error() if it is not happy */
term_check_multiplot_okay(interactive);
if (read_line("multiplot> "))
return(1);
} else {
if (read_line(PROMPT))
return(1);
}
/* So we can flag any new output: if false at time of error, */
/* we reprint the command line before printing caret. */
/* TRUE for interactive terminals, since the command line is typed. */
/* FALSE for non-terminal stdin, so command line is printed anyway. */
/* (DFK 11/89) */
screen_ok = interactive;
if (do_line())
return(1);
else
return(0);
}
#ifdef OS2
int set_input_line( char *line, int nchar )
{
strncpy( input_line, line, nchar ) ;
input_line[nchar]='\0';
}
#endif
int do_line()
{ /* also used in load_file */
if (is_system(input_line[0])) {
do_system();
if (interactive) /* 3.5 did it unconditionally */
(void) fputs("!\n", stderr); /* why do we need this ? */
return(0);
}
num_tokens = scanner(input_line);
c_token = 0;
while (c_token < num_tokens) {
if (command())
return(1);
if (c_token < num_tokens) /* something after command */
if (equals(c_token, ";"))
c_token++;
else
int_error("';' expected", c_token);
}
return(0);
}
void define()
{
register int start_token;/* the 1st token in the function definition */
register struct udvt_entry *udv;
register struct udft_entry *udf;
if (equals(c_token + 1, "(")) {
/* function ! */
int dummy_num = 0;
char save_dummy[MAX_NUM_VAR][MAX_ID_LEN+1];
memcpy(save_dummy, c_dummy_var, sizeof(save_dummy));
start_token = c_token;
do {
c_token += 2; /* skip to the next dummy */
copy_str(c_dummy_var[dummy_num++], c_token, MAX_ID_LEN);
} while (equals(c_token + 1, ",") && (dummy_num < MAX_NUM_VAR));
if (equals(c_token + 1, ","))
int_error("function contains too many parameters", c_token + 2);
c_token += 3; /* skip (, dummy, ) and = */
if (END_OF_COMMAND)
int_error("function definition expected", c_token);
udf = dummy_func = add_udf(start_token);
if (udf->at) /* already a dynamic a.t. there */
free((char *) udf->at); /* so free it first */
if ((udf->at = perm_at()) == (struct at_type *) NULL)
int_error("not enough memory for function", start_token);
memcpy(c_dummy_var, save_dummy, sizeof(save_dummy));
m_capture(&(udf->definition), start_token, c_token - 1);
dummy_func=NULL; /* dont let anyone else use our workspace */
} else {
/* variable ! */
start_token = c_token;
c_token += 2;
udv = add_udv(start_token);
(void) const_express(&(udv->udv_value));
udv->udv_undef = FALSE;
}
}
static int command()
{
FILE *fp;
int i;
char sv_file[MAX_LINE_LEN + 1];
/* string holding name of save or load file */
for (i = 0; i < MAX_NUM_VAR; i++)
c_dummy_var[i][0] = '\0'; /* no dummy variables */
if (is_definition(c_token))
define();
else if (almost_equals(c_token, "h$elp") || equals(c_token, "?")) {
c_token++;
do_help(1);
} else if (equals(c_token, "testtime")) {
/* given a format and a time string, exercise the time code */
char format[160], string[160];
struct tm tm;
double secs;
if (isstring(++c_token))
{
quote_str(format, c_token, 159);
if (isstring(++c_token))
{
quote_str(string, c_token++, 159);
memset(&tm, 0, sizeof(tm));
gstrptime(string, format, &tm);
secs = gtimegm(&tm);
fprintf(stderr, "internal = %f - %d/%d/%d::%d:%d:%d , wday=%d, yday=%d\n",
secs, tm.tm_mday, tm.tm_mon+1, tm.tm_year, tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday, tm.tm_yday);
memset(&tm, 0, sizeof(tm));
ggmtime(&tm, secs);
gstrftime(string, 159, format, secs);
fprintf(stderr, "convert back \"%s\" - %d/%d/%d::%d:%d:%d , wday=%d, yday=%d\n",
string, tm.tm_mday, tm.tm_mon+1, tm.tm_year, tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday, tm.tm_yday);
}
}
} else if (almost_equals(c_token, "test")) {
c_token++;
test_term();
} else if (almost_equals(c_token, "scr$eendump")) {
c_token++;
#ifdef _Windows
screen_dump();
#else
fputs("screendump not implemented\n",stderr);
#endif
} else if (almost_equals(c_token, "pa$use")) {
struct value a;
int sleep_time, text = 0;
char buf[MAX_LINE_LEN + 1];
c_token++;
sleep_time = (int) real(const_express(&a));
buf[0]='\0';
if (!(END_OF_COMMAND)) {
if (!isstring(c_token))
int_error("expecting string", c_token);
else {
quote_str(buf, c_token, MAX_LINE_LEN);
++c_token;
#ifdef _Windows
if (sleep_time>=0)
#endif
#ifdef OS2
if( strcmp(term->name, "pm" )!=0 || sleep_time >=0 )
#endif
#ifdef MTOS
if( strcmp(term->name, "mtos" )!=0 || sleep_time >=0 )
#endif
(void) fprintf(stderr, "%s", buf);
text = 1;
}
}
if (sleep_time < 0)
#ifdef _Windows
{
if (!Pause(buf))
bail_to_command_line();
}
#else
#ifdef OS2
if( strcmp(term->name, "pm" )==0 && sleep_time < 0 )
{
int rc ;
if( (rc=PM_pause( buf ))==0 ) bail_to_command_line();
else if( rc==2 ) {
(void) fprintf(stderr, "%s", buf);
text = 1;
(void) fgets(buf, MAX_LINE_LEN, stdin);
}
}
#else
#ifdef _Macintosh
if ( strcmp(term->name, "macintosh" )==0 && sleep_time < 0)
{
Pause(sleep_time);
}
#else
#ifdef MTOS
{
if( strcmp(term->name, "mtos" )==0) {
int MTOS_pause(char *buf);
int rc;
if ((rc = MTOS_pause(buf)) == 0)
bail_to_command_line();
else if (rc == 2) {
(void) fprintf(stderr, "%s", buf);
text = 1;
(void) fgets(buf, MAX_LINE_LEN, stdin);
}
}
else if( strcmp(term->name, "atari" )==0) {
char *readline(char *);
char *line=readline("");
if(line) free(line);
}
else
(void) fgets(buf, MAX_LINE_LEN, stdin);
}
#else
#ifdef ATARI
{
else if( strcmp(term->name, "atari" )==0) {
char *readline(char *);
char *line=readline("");
if(line) free(line);
}
else
(void) fgets(buf, MAX_LINE_LEN, stdin);
}
#else /* ATARI */
(void) fgets(buf, MAX_LINE_LEN, stdin);
/* Hold until CR hit. */
#endif /* MTOS */
#endif /* ATARI */
#endif
#endif /*OS2*/
#endif
if (sleep_time > 0)
GP_SLEEP(sleep_time);
if (text != 0 && sleep_time >= 0)
(void) fprintf(stderr, "\n");
screen_ok = FALSE;
}
else if (almost_equals(c_token, "pr$int")) {
int need_space=0; /* space printed between two expressions only*/
screen_ok = FALSE;
do {
++c_token;
if (isstring(c_token)) {
char s[MAX_LINE_LEN];
quote_str(s, c_token, MAX_LINE_LEN);
fputs(s, stderr);
need_space=0;
++c_token;
} else {
struct value a;
(void) const_express(&a);
if (need_space)
putc(' ', stderr);
need_space = 1;
disp_value(stderr, &a);
}
} while (!END_OF_COMMAND && equals(c_token, ","));
(void) putc('\n', stderr);
} else if (almost_equals(c_token,"fit")) {
++c_token;
do_fit();
}
else if (almost_equals(c_token,"up$date")) {
char tmps[80];
char tmps2[80];
/* Have to initialise tmps2, otherwise
* update() cannot decide whether a valid
* filename was given. lh
*/
tmps2[0] = '\0';
if ( !isstring(++c_token) )
int_error ("Parameter filename expected", c_token);
quote_str (tmps, c_token++, 80);
if (!(END_OF_COMMAND)) {
if ( !isstring(c_token) )
int_error ("New parameter filename expected", c_token);
else
quote_str (tmps2, c_token++, 80);
}
update (tmps, tmps2);
}
else if (almost_equals(c_token, "p$lot")) {
plot_token = c_token++;
#ifdef _Windows
SetCursor(LoadCursor((HINSTANCE)NULL, IDC_WAIT));
#endif
plotrequest();
#ifdef _Windows
SetCursor(LoadCursor((HINSTANCE)NULL, IDC_ARROW));
#endif
} else if (almost_equals(c_token, "sp$lot")) {
plot_token = c_token++;
#ifdef _Windows
SetCursor(LoadCursor((HINSTANCE)NULL, IDC_WAIT));
#endif
plot3drequest();
#ifdef _Windows
SetCursor(LoadCursor((HINSTANCE)NULL, IDC_ARROW));
#endif
} else if (almost_equals(c_token, "rep$lot")) {
if (replot_line[0] == '\0')
int_error("no previous plot", c_token);
c_token++;
#ifdef _Windows
SetCursor(LoadCursor((HINSTANCE)NULL, IDC_WAIT));
#endif
replotrequest();
#ifdef _Windows
SetCursor(LoadCursor((HINSTANCE)NULL, IDC_ARROW));
#endif
} else if (almost_equals(c_token, "se$t"))
set_command();
else if (almost_equals(c_token, "res$et"))
reset_command();
else if (almost_equals(c_token, "sh$ow"))
show_command();
else if (almost_equals(c_token, "cl$ear")) {
term_start_plot();
if (multiplot && term->fillbox) {
unsigned int x1 = (unsigned int)(xoffset * term->xmax);
unsigned int y1 = (unsigned int)(yoffset * term->ymax);
unsigned int width = (unsigned int)(xsize * term->xmax);
unsigned int height = (unsigned int)(ysize * term->ymax);
(*term->fillbox)(0,x1,y1,width,height);
}
term_end_plot();
screen_ok = FALSE;
c_token++;
} else if (almost_equals(c_token, "she$ll")) {
do_shell();
screen_ok = FALSE;
c_token++;
} else if (almost_equals(c_token, "sa$ve")) {
if (almost_equals(++c_token, "f$unctions")) {
if (!isstring(++c_token))
int_error("expecting filename", c_token);
else {
quote_str(sv_file, c_token, MAX_LINE_LEN);
save_functions(fopen(sv_file, "w"));
}
} else if (almost_equals(c_token, "v$ariables")) {
if (!isstring(++c_token))
int_error("expecting filename", c_token);
else {
quote_str(sv_file, c_token, MAX_LINE_LEN);
save_variables(fopen(sv_file, "w"));
}
} else if (almost_equals(c_token, "s$et")) {
if (!isstring(++c_token))
int_error("expecting filename", c_token);
else {
quote_str(sv_file, c_token, MAX_LINE_LEN);
save_set(fopen(sv_file, "w"));
}
} else if (isstring(c_token)) {
quote_str(sv_file, c_token, MAX_LINE_LEN);
save_all(fopen(sv_file, "w"));
} else {
int_error(
"filename or keyword 'functions', 'variables', or 'set' expected",
c_token);
}
c_token++;
} else if (almost_equals(c_token, "l$oad")) {
if (!isstring(++c_token))
int_error("expecting filename", c_token);
else {
quote_str(sv_file, c_token, MAX_LINE_LEN);
load_file(fp=fopen(sv_file, "r"), sv_file, FALSE);
/* input_line[] and token[] now destroyed! */
c_token = num_tokens = 0;
}
} else if (almost_equals(c_token,"ca$ll")) {
if (!isstring(++c_token))
int_error("expecting filename",c_token);
else {
quote_str(sv_file,c_token, MAX_LINE_LEN);
load_file(fopen(sv_file,"r"), sv_file, TRUE); /* Argument list follows filename */
/* input_line[] and token[] now destroyed! */
c_token = num_tokens = 0;
}
} else if (almost_equals(c_token,"if")) {
double exprval;
struct value t;
if (!equals(++c_token, "(")) /* no expression */
int_error("expecting (expression)", c_token);
exprval = real(const_express(&t));
if (exprval != 0.0) {
/* fake the condition of a ';' between commands */
int eolpos = token[num_tokens-1].start_index+token[num_tokens-1].length;
--c_token;
token[c_token].length = 1;
token[c_token].start_index = eolpos+2;
input_line[eolpos+2] = ';';
input_line[eolpos+3] = '\0';
} else
c_token = num_tokens = 0;
} else if (almost_equals(c_token,"rer$ead")) {
fp = lf_top();
if (fp != (FILE *)NULL) rewind(fp);
c_token++;
} else if (almost_equals(c_token, "cd")) {
if (!isstring(++c_token))
int_error("expecting directory name", c_token);
else {
quote_str(sv_file, c_token, MAX_LINE_LEN);
if (changedir(sv_file)) {
int_error("Can't change to this directory", c_token);
}
c_token++;
}
} else if (almost_equals(c_token, "pwd")) {
GP_GETCWD(sv_file, sizeof(sv_file) );
fprintf(stderr, "%s\n", sv_file);
c_token++;
} else if (almost_equals(c_token, "ex$it") ||
almost_equals(c_token, "q$uit")) {
/* graphics will be tidied up in main */
return(1);
} else if (!equals(c_token, ";")) { /* null statement */
#ifdef OS2
if (_osmode==OS2_MODE) {
if( token[c_token].is_token ) {
int rc ;
rc=ExecuteMacro(input_line+token[c_token].start_index,
token[c_token].length);
if(rc==0){
c_token=num_tokens=0;
return(0);
}
}
}
#endif
int_error("invalid command", c_token);
}
return(0);
}
void done(status)
int status;
{
term_reset();
exit(status);
}
static int changedir(path)
char *path;
{
#if defined(MSDOS) || defined(_Windows) || defined(ATARI) || defined(DOS386)
#if defined(__ZTC__)
unsigned dummy; /* it's a parameter needed for dos_setdrive */
#endif
/* first deal with drive letter */
if (isalpha(path[0]) && (path[1]==':')) {
int driveno=toupper(path[0])-'A'; /* 0=A, 1=B, ... */
#if defined(ATARI)
(void)Dsetdrv(driveno);
#endif
#if defined(__ZTC__)
(void)dos_setdrive(driveno + 1, &dummy);
#endif
#if defined(MSDOS) && defined(__EMX__)
(void)_chdrive(driveno + 1);
#endif
#if defined(__MSC__)
(void)_chdrive(driveno+1);
#endif
/* HBB: recent versions of DJGPP also have setdisk():, so I del'ed the special code */
#if ((defined(MSDOS) || defined(_Windows)) && defined(__TURBOC__)) || defined(DJGPP)
(void) setdisk(driveno);
#endif
path += 2; /* move past drive letter */
}
/* then change to actual directory */
if (*path)
if (chdir(path))
return 1;
return 0; /* should report error with setdrive also */
#else /* MSDOS, ATARI etc. */
return chdir(path);
#endif /* MSDOS, ATARI etc. */
}
static void replotrequest()
{
if (equals(c_token, "["))
int_error("cannot set range with replot", c_token);
/* do not store directly into the replot_line string, until the
* new plot line has been successfully plotted. This way,
* if user makes a typo in a replot line, they do not have
* to start from scratch. The replot_line will be committed
* after do_plot has returned, whence we know all is well
*/
if (END_OF_COMMAND)
{
/* it must already be long enough, but lets make sure */
int len = strlen(replot_line) + 1;
while (input_line_len < len)
extend_input_line();
strcpy(input_line, replot_line);
}
else
{
char *replot_args=NULL; /* else m_capture will free it */
int last_token = num_tokens - 1;
/* length = length of old part + length of new part + ',' + \0 */
int newlen=strlen(replot_line)+token[last_token].start_index+token[last_token].length-token[c_token].start_index+2;
m_capture(&replot_args, c_token, last_token); /* might be empty */
while (input_line_len < newlen)
extend_input_line();
strcpy(input_line, replot_line);
strcat(input_line, ",");
strcat(input_line, replot_args);
free(replot_args);
}
plot_token=0; /* whole line to be saved as replot line */
screen_ok = FALSE;
num_tokens = scanner(input_line);
c_token = 1; /* skip the 'plot' part */
if(is_3d_plot)
plot3drequest();
else plotrequest();
}
#ifndef HAVE_SLEEP
/* The implementations below do not even come close
to what is required by POSIX, but I suppose
it doesn't really matter on these systems. lh
*/
#ifdef AMIGA_SC_6_1
#include <proto/dos.h>
unsigned int
sleep(delay)
unsigned int delay;
{
Delay(50 * delay);
return (unsigned int)0;
}
#endif /* AMIGA_SC_6_1 */
#ifdef WIN32
/* the WIN32 API has a Sleep function that does not consume CPU cycles */
#include <windows.h>
unsigned int
sleep(delay)
unsigned int delay;
{
Sleep( (DWORD) delay*1000 );
return (unsigned int)0;
}
#else
#if defined(MSDOS) || defined(_Windows) || defined(DOS386) || defined(AMIGA_AC_5)
#if (!defined(__TURBOC__) && !defined(__EMX__) && !defined(DJGPP)) || defined(_Windows) /* Turbo C already has sleep() */
/* kludge to provide sleep() for msc 5.1 */
unsigned int
sleep(delay)
unsigned int delay;
{
unsigned long time_is_up;
time_is_up = time(NULL) + (unsigned long) delay;
while (time(NULL) < time_is_up)
/* wait */ ;
return (unsigned int)0;
}
#endif /* (!TURBOC && !__EMX__ && !DJGPP) or _Windows */
#endif /* MSDOS || _Windows || AMIGA_AC_5 */
#endif /* WIN32 */
#endif /* HAVE_SLEEP */
/* Support for input, shell, and help for various systems */
#ifdef vms
#include <descrip.h>
#include <rmsdef.h>
#include <smgdef.h>
#include <smgmsg.h>
extern lib$get_input(), lib$put_output();
extern smg$read_composed_line();
extern sys$putmsg();
extern lbr$output_help();
extern lib$spawn();
int vms_len;
unsigned int status[2] =
{1, 0};
static char Help[MAX_LINE_LEN + 1] = "gnuplot";
$DESCRIPTOR(prompt_desc, PROMPT);
/* temporary fix until change to variable length */
struct dsc$descriptor_s line_desc = { 0, DSC$K_DTYPE_T, DSC$K_CLASS_S, NULL };
$DESCRIPTOR(help_desc, Help);
$DESCRIPTOR(helpfile_desc, "GNUPLOT$HELP");
/* please note that the vms version of read_line doesn't support variable line
length (yet) */
static int read_line(prompt)
char *prompt;
{
int more, start = 0;
char expand_prompt[40];
prompt_desc.dsc$w_length = strlen(prompt);
prompt_desc.dsc$a_pointer = prompt;
(void) strcpy(expand_prompt, "_");
(void) strncat(expand_prompt, prompt, 38);
do {
line_desc.dsc$w_length = MAX_LINE_LEN - start;
line_desc.dsc$a_pointer = &input_line[start];
switch (status[1] = smg$read_composed_line(&vms_vkid, 0, &line_desc, &prompt_desc, &vms_len)) {
case SMG$_EOF:
done(IO_SUCCESS); /* ^Z isn't really an error */
break;
case RMS$_TNS: /* didn't press return in time */
vms_len--; /* skip the last character */
break; /* and parse anyway */
case RMS$_BES: /* Bad Escape Sequence */
case RMS$_PES: /* Partial Escape Sequence */
sys$putmsg(status);
vms_len = 0; /* ignore the line */
break;
case SS$_NORMAL:
break; /* everything's fine */
default:
done(status[1]); /* give the error message */
}
start += vms_len;
input_line[start] = '\0';
inline_num++;
if (input_line[start - 1] == '\\') {
/* Allow for a continuation line. */
prompt_desc.dsc$w_length = strlen(expand_prompt);
prompt_desc.dsc$a_pointer = expand_prompt;
more = 1;
--start;
} else {
line_desc.dsc$w_length = strlen(input_line);
line_desc.dsc$a_pointer = input_line;
more = 0;
}
} while (more);
return 0;
}
static void do_help(toplevel)
int toplevel; /* not used for VMS version */
{
int first=c_token;
while (!END_OF_COMMAND)
++c_token;
strcpy(Help, "GNUPLOT ");
capture(Help+8, first, c_token-1, sizeof(Help)-9);
help_desc.dsc$w_length = strlen(Help);
if ((vaxc$errno = lbr$output_help(lib$put_output, 0, &help_desc,
&helpfile_desc, 0, lib$get_input)) != SS$_NORMAL)
os_error("can't open GNUPLOT$HELP", NO_CARET);
}
static void do_shell()
{
if ((vaxc$errno = lib$spawn()) != SS$_NORMAL) {
os_error("spawn error", NO_CARET);
}
}
static void do_system()
{
input_line[0] = ' '; /* an embarrassment, but... */
if ((vaxc$errno = lib$spawn(&line_desc)) != SS$_NORMAL)
os_error("spawn error", NO_CARET);
(void) putc('\n', stderr);
}
#else /* vms */
#ifdef _Windows
static void do_help(toplevel)
int toplevel; /* not used for windows */
{
if (END_OF_COMMAND)
WinHelp(textwin.hWndParent,(LPSTR)winhelpname,HELP_INDEX,(DWORD)NULL);
else {
char buf[128];
int start = c_token++;
while (!(END_OF_COMMAND))
c_token++;
capture(buf, start, c_token-1, 128);