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misc.c
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C/C++ Source or Header
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1996-01-26
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1,249 lines
#ifndef lint
static char *RCSid = "$Id: misc.c,v 1.51 1995/12/18 22:41:09 drd Exp $";
#endif
/* GNUPLOT - misc.c */
/*
* Copyright (C) 1986 - 1993 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.
*
*/
#include <math.h>
#ifdef AMIGA_AC_5
#include <exec/types.h>
#endif /* AMIGA_AC_5 */
#include "plot.h"
#include "setshow.h"
extern int key_vpos, key_hpos, key_just;
extern int datatype[];
extern char timefmt[];
static void save_range __P((FILE *fp, int axis, double min, double max, int autosc, char *text));
static void save_tics __P((FILE *fp, int where, int axis, struct ticdef *tdef, char *text));
static void save_position __P((FILE *fp, struct position *pos));
static int lf_pop __P((void));
static void lf_push __P((FILE *fp));
static int find_maxl_cntr __P((struct gnuplot_contours *contours, int *count));
/* State information for load_file(), to recover from errors
* and properly handle recursive load_file calls
*/
typedef struct lf_state_struct LFS;
struct lf_state_struct {
FILE *fp; /* file pointer for load file */
char *name; /* name of file */
TBOOLEAN interactive; /* value of interactive flag on entry */
TBOOLEAN do_load_arg_substitution; /* likewise ... */
int inline_num; /* inline_num on entry */
LFS *prev; /* defines a stack */
char *call_args[10]; /* args when file is 'call'ed instead of 'load'ed */
} *lf_head = NULL; /* NULL if not in load_file */
/* these two could be in load_file, except for error recovery */
extern TBOOLEAN do_load_arg_substitution;
extern char *call_args[10];
/*
* cp_alloc() allocates a curve_points structure that can hold 'num'
* points.
*/
struct curve_points *
cp_alloc(num)
int num;
{
struct curve_points *cp;
cp = (struct curve_points *) alloc((unsigned long)sizeof(struct curve_points), "curve");
cp->p_max = (num >= 0 ? num : 0);
if (num > 0) {
cp->points = (struct coordinate GPHUGE *)
alloc((unsigned long)num * sizeof(struct coordinate), "curve points");
} else
cp->points = (struct coordinate GPHUGE *) NULL;
cp->next_cp = NULL;
cp->title = NULL;
return(cp);
}
/*
* cp_extend() reallocates a curve_points structure to hold "num"
* points. This will either expand or shrink the storage.
*/
void cp_extend(cp, num)
struct curve_points *cp;
int num;
{
#if (defined(MSDOS) || defined(_Windows)) && !defined(WIN32)
/* Make sure we do not allocate more than 64k points in msdos since
* indexing is done with 16-bit int
* Leave some bytes for malloc maintainance.
*/
if (num > 32700)
int_error("Array index must be less than 32k in msdos", NO_CARET);
#endif /* MSDOS */
if (num == cp->p_max) return;
if (num > 0) {
if (cp->points == NULL) {
cp->points = (struct coordinate GPHUGE *)
alloc((unsigned long)num * sizeof(struct coordinate), "curve points");
} else {
cp->points = (struct coordinate GPHUGE *)
ralloc(cp->points, (unsigned long)num * sizeof(struct coordinate), "expanding curve points");
}
cp->p_max = num;
} else {
if (cp->points != (struct coordinate GPHUGE *) NULL)
free(cp->points);
cp->points = (struct coordinate GPHUGE *) NULL;
cp->p_max = 0;
}
}
/*
* cp_free() releases any memory which was previously malloc()'d to hold
* curve points (and recursively down the linked list).
*/
void cp_free(cp)
struct curve_points *cp;
{
if (cp) {
cp_free(cp->next_cp);
if (cp->title)
free((char *)cp->title);
if (cp->points)
free((char *)cp->points);
free((char *)cp);
}
}
/*
* iso_alloc() allocates a iso_curve structure that can hold 'num'
* points.
*/
struct iso_curve *
iso_alloc(num)
int num;
{
struct iso_curve *ip;
ip = (struct iso_curve *) alloc((unsigned long)sizeof(struct iso_curve), "iso curve");
ip->p_max = (num >= 0 ? num : 0);
if (num > 0) {
ip->points = (struct coordinate GPHUGE *)
alloc((unsigned long)num * sizeof(struct coordinate), "iso curve points");
} else
ip->points = (struct coordinate GPHUGE *) NULL;
ip->next = NULL;
return(ip);
}
/*
* iso_extend() reallocates a iso_curve structure to hold "num"
* points. This will either expand or shrink the storage.
*/
void iso_extend(ip, num)
struct iso_curve *ip;
int num;
{
if (num == ip->p_max) return;
#if (defined(MSDOS) || defined(_Windows)) && !defined(WIN32)
/* Make sure we do not allocate more than 64k points in msdos since
* indexing is done with 16-bit int
* Leave some bytes for malloc maintainance.
*/
if (num > 32700)
int_error("Array index must be less than 32k in msdos", NO_CARET);
#endif /* MSDOS */
if (num > 0) {
if (ip->points == NULL) {
ip->points = (struct coordinate GPHUGE *)
alloc((unsigned long)num * sizeof(struct coordinate), "iso curve points");
} else {
ip->points = (struct coordinate GPHUGE *)
ralloc(ip->points, (unsigned long)num * sizeof(struct coordinate), "expanding curve points");
}
ip->p_max = num;
} else {
if (ip->points != (struct coordinate GPHUGE *) NULL)
free(ip->points);
ip->points = (struct coordinate GPHUGE *) NULL;
ip->p_max = 0;
}
}
/*
* iso_free() releases any memory which was previously malloc()'d to hold
* iso curve points.
*/
void iso_free(ip)
struct iso_curve *ip;
{
if (ip) {
if (ip->points)
free((char *)ip->points);
free((char *)ip);
}
}
/*
* sp_alloc() allocates a surface_points structure that can hold 'num_iso_1'
* iso-curves with 'num_samp_2' samples and 'num_iso_2' iso-curves with
* 'num_samp_1' samples.
* If, however num_iso_2 or num_samp_1 is zero no iso curves are allocated.
*/
struct surface_points *
sp_alloc(num_samp_1,num_iso_1,num_samp_2,num_iso_2)
int num_samp_1,num_iso_1,num_samp_2,num_iso_2;
{
struct surface_points *sp;
sp = (struct surface_points *) alloc((unsigned long)sizeof(struct surface_points), "surface");
sp->next_sp = NULL;
sp->title = NULL;
sp->contours = NULL;
sp->iso_crvs = NULL;
sp->num_iso_read = 0;
if (num_iso_2 > 0 && num_samp_1 > 0) {
int i;
struct iso_curve *icrv;
for (i = 0; i < num_iso_1; i++) {
icrv = iso_alloc(num_samp_2);
icrv->next = sp->iso_crvs;
sp->iso_crvs = icrv;
}
for (i = 0; i < num_iso_2; i++) {
icrv = iso_alloc(num_samp_1);
icrv->next = sp->iso_crvs;
sp->iso_crvs = icrv;
}
} else
sp->iso_crvs = (struct iso_curve *) NULL;
return(sp);
}
/*
* sp_replace() updates a surface_points structure so it can hold 'num_iso_1'
* iso-curves with 'num_samp_2' samples and 'num_iso_2' iso-curves with
* 'num_samp_1' samples.
* If, however num_iso_2 or num_samp_1 is zero no iso curves are allocated.
*/
void sp_replace(sp,num_samp_1,num_iso_1,num_samp_2,num_iso_2)
struct surface_points *sp;
int num_samp_1,num_iso_1,num_samp_2,num_iso_2;
{
int i;
struct iso_curve *icrv, *icrvs = sp->iso_crvs;
while ( icrvs ) {
icrv = icrvs;
icrvs = icrvs->next;
iso_free( icrv );
}
sp->iso_crvs = NULL;
if (num_iso_2 > 0 && num_samp_1 > 0) {
for (i = 0; i < num_iso_1; i++) {
icrv = iso_alloc(num_samp_2);
icrv->next = sp->iso_crvs;
sp->iso_crvs = icrv;
}
for (i = 0; i < num_iso_2; i++) {
icrv = iso_alloc(num_samp_1);
icrv->next = sp->iso_crvs;
sp->iso_crvs = icrv;
}
} else
sp->iso_crvs = (struct iso_curve *) NULL;
}
/*
* sp_free() releases any memory which was previously malloc()'d to hold
* surface points.
*/
void sp_free(sp)
struct surface_points *sp;
{
if (sp) {
sp_free(sp->next_sp);
if (sp->title)
free((char *)sp->title);
if (sp->contours) {
struct gnuplot_contours *cntr, *cntrs = sp->contours;
while (cntrs) {
cntr = cntrs;
cntrs = cntrs->next;
free(cntr->coords);
free(cntr);
}
}
if (sp->iso_crvs) {
struct iso_curve *icrv, *icrvs = sp->iso_crvs;
while (icrvs) {
icrv = icrvs;
icrvs = icrvs->next;
iso_free(icrv);
}
}
free((char *)sp);
}
}
void save_functions(fp)
FILE *fp;
{
register struct udft_entry *udf = first_udf;
if (fp) {
while (udf) {
if (udf->definition)
fprintf(fp,"%s\n",udf->definition);
udf = udf->next_udf;
}
(void) fclose(fp);
} else
os_error("Cannot open save file",c_token);
}
void save_variables(fp)
FILE *fp;
{
register struct udvt_entry *udv = first_udv->next_udv; /* skip pi */
if (fp) {
while (udv) {
if (!udv->udv_undef) {
fprintf(fp,"%s = ",udv->udv_name);
disp_value(fp,&(udv->udv_value));
(void) putc('\n',fp);
}
udv = udv->next_udv;
}
(void) fclose(fp);
} else
os_error("Cannot open save file",c_token);
}
void save_all(fp)
FILE *fp;
{
register struct udft_entry *udf = first_udf;
register struct udvt_entry *udv = first_udv->next_udv; /* skip pi */
if (fp) {
save_set_all(fp);
while (udf) {
if (udf->definition)
fprintf(fp,"%s\n",udf->definition);
udf = udf->next_udf;
}
while (udv) {
if (!udv->udv_undef) {
fprintf(fp,"%s = ",udv->udv_name);
disp_value(fp,&(udv->udv_value));
(void) putc('\n',fp);
}
udv = udv->next_udv;
}
fprintf(fp,"%s\n",replot_line);
(void) fclose(fp);
} else
os_error("Cannot open save file",c_token);
}
void save_set(fp)
FILE *fp;
{
if (fp) {
save_set_all(fp);
(void) fclose(fp);
} else
os_error("Cannot open save file",c_token);
}
void save_set_all(fp)
FILE *fp;
{
struct text_label *this_label;
struct arrow_def *this_arrow;
char str[MAX_LINE_LEN+1];
if (term)
fprintf(fp,"set terminal %s %s\n", term->name, term_options);
else
fputs("set terminal unknown\n", fp);
fprintf(fp,"set output %s\n",strcmp(outstr,"STDOUT")? outstr : "" );
fprintf(fp,"set %sclip points\n", (clip_points)? "" : "no");
fprintf(fp,"set %sclip one\n", (clip_lines1)? "" : "no");
fprintf(fp,"set %sclip two\n", (clip_lines2)? "" : "no");
fprintf(fp,"set bar %f\n", bar_size);
fprintf(fp,"set %sborder\n",draw_border ? "" : "no");
if ( datatype[0] == TIME )
fprintf(fp,"set xdata time\n");
if ( datatype[1] == TIME )
fprintf(fp,"set ydata time\n");
if ( datatype[2] == TIME )
fprintf(fp,"set zdata time\n");
if (boxwidth<0.0)
fprintf(fp,"set boxwidth\n");
else
fprintf(fp,"set boxwidth %g\n",boxwidth);
if (dgrid3d)
fprintf(fp,"set dgrid3d %d,%d, %d\n",
dgrid3d_row_fineness,
dgrid3d_col_fineness,
dgrid3d_norm_value);
fprintf(fp,"set dummy %s,%s\n",dummy_var[0], dummy_var[1]);
fprintf(fp,"set format x \"%s\"\n", conv_text(str,xformat));
fprintf(fp,"set format y \"%s\"\n", conv_text(str,yformat));
fprintf(fp,"set format x2 \"%s\"\n", conv_text(str,x2format));
fprintf(fp,"set format y2 \"%s\"\n", conv_text(str,y2format));
fprintf(fp,"set format z \"%s\"\n", conv_text(str,zformat));
if (grid==0)
fputs("set nogrid\n", fp);
else {
if (polar_grid_angle) /* set angle already output */
fprintf(fp, "set grid polar %f\n", polar_grid_angle/ang2rad);
else
fputs("set grid nopolar\n", fp);
fprintf(fp,"set grid %sxtics %sytics %sztics %sx2tics %sy2tics %smxtics %smytics %smztics %smx2tics %smy2tics %d %d\n",
grid&GRID_X ? "" : "no",
grid&GRID_Y ? "" : "no",
grid&GRID_Z ? "" : "no",
grid&GRID_X2 ? "" : "no",
grid&GRID_Y2 ? "" : "no",
grid&GRID_MX ? "" : "no",
grid&GRID_MY ? "" : "no",
grid&GRID_MZ ? "" : "no",
grid&GRID_MX2 ? "" : "no",
grid&GRID_MY2 ? "" : "no",
grid_linetype+1,
mgrid_linetype+1);
}
fprintf(fp,"set key title \"%s\"\n", conv_text(str,key_title));
switch (key) {
case -1 : {
fprintf(fp,"set key");
switch(key_hpos) {
case TRIGHT:
fprintf(fp," right");
break;
case TLEFT:
fprintf(fp," left");
break;
case TOUT:
fprintf(fp," out");
break;
}
switch(key_vpos) {
case TTOP:
fprintf(fp," top");
break;
case TBOTTOM:
fprintf(fp," bottom");
break;
case TUNDER:
fprintf(fp," below");
break;
}
break;
}
case 0 :
fprintf(fp,"set nokey\n");
break;
case 1 :
fprintf(fp,"set key ");
save_position(fp, &key_user_pos);
break;
}
if (key) {
fprintf(fp, " %s %sreverse box %d\n",
key_just==JLEFT ? "Left" : "Right",
key_reverse ? "" : "no",
key_box+1);
}
fprintf(fp,"set nolabel\n");
for (this_label = first_label; this_label != NULL;
this_label = this_label->next) {
fprintf(fp,"set label %d \"%s\" at ",
this_label->tag,
conv_text(str,this_label->text));
save_position(fp, &this_label->place);
switch(this_label->pos) {
case LEFT :
fprintf(fp," left");
break;
case CENTRE :
fprintf(fp," centre");
break;
case RIGHT :
fprintf(fp," right");
break;
}
if ((this_label->font)[0]!='\0')
fprintf(fp," font \"%s\"",this_label->font);
/* Entry font added by DJL */
fputc('\n',fp);
}
fprintf(fp,"set noarrow\n");
for (this_arrow = first_arrow; this_arrow != NULL;
this_arrow = this_arrow->next) {
fprintf(fp,"set arrow %d from ", this_arrow->tag);
save_position(fp, &this_arrow->start);
fputs(" to ", fp);
save_position(fp, &this_arrow->end);
fprintf(fp, " %s %d\n",
this_arrow->head ? "" : " nohead",
this_arrow->line);
}
fprintf(fp,"set nologscale\n");
if (is_log_x) fprintf(fp,"set logscale x %g\n", base_log_x);
if (is_log_y) fprintf(fp,"set logscale y %g\n", base_log_y);
if (is_log_z) fprintf(fp,"set logscale z %g\n", base_log_z);
if (is_log_x2) fprintf(fp,"set logscale x2 %g\n", base_log_x2);
if (is_log_y2) fprintf(fp,"set logscale y2 %g\n", base_log_y2);
fprintf(fp,"set offsets %g, %g, %g, %g\n",loff,roff,toff,boff);
fprintf(fp,"set pointsize %g\n", pointsize);
fprintf(fp,"set encoding %s\n",encoding_names[encoding]);
fprintf(fp,"set %spolar\n", (polar)? "" : "no");
fprintf(fp,"set angles %s\n", (angles_format == ANGLES_RADIANS)?
"radians" : "degrees");
fprintf(fp,"set %sparametric\n", (parametric)? "" : "no");
fprintf(fp,"set view %g, %g, %g, %g\n",
surface_rot_x, surface_rot_z, surface_scale, surface_zscale);
fprintf(fp,"set samples %d, %d\n",samples_1,samples_2);
fprintf(fp,"set isosamples %d, %d\n",iso_samples_1,iso_samples_2);
fprintf(fp,"set %ssurface\n",(draw_surface) ? "" : "no");
fprintf(fp,"set %scontour",(draw_contour) ? "" : "no");
switch (draw_contour) {
case CONTOUR_NONE: fprintf(fp, "\n"); break;
case CONTOUR_BASE: fprintf(fp, " base\n"); break;
case CONTOUR_SRF: fprintf(fp, " surface\n"); break;
case CONTOUR_BOTH: fprintf(fp, " both\n"); break;
}
if (label_contours)
fprintf(fp,"set clabel '%s'\n",contour_format);
else
fprintf(fp,"set noclabel\n");
fprintf(fp,"set %shidden3d\n",(hidden3d) ? "" : "no");
fprintf(fp,"set cntrparam order %d\n", contour_order);
fprintf(fp,"set cntrparam ");
switch (contour_kind) {
case CONTOUR_KIND_LINEAR: fprintf(fp, "linear\n"); break;
case CONTOUR_KIND_CUBIC_SPL: fprintf(fp, "cubicspline\n"); break;
case CONTOUR_KIND_BSPLINE: fprintf(fp, "bspline\n"); break;
}
fprintf(fp,"set cntrparam levels ");
switch (levels_kind) {
case LEVELS_AUTO:
fprintf(fp, "auto %d\n", contour_levels);
break;
case LEVELS_INCREMENTAL:
fprintf(fp, "incremental %g,%g,%g\n",
levels_list[0], levels_list[1],
levels_list[0]+levels_list[1]*contour_levels);
break;
case LEVELS_DISCRETE:
{ int i;
fprintf(fp, "discrete %g", levels_list[0]);
for(i = 1; i < contour_levels; i++)
fprintf(fp, ",%g ", levels_list[i]);
fprintf(fp, "\n");
}
}
fprintf(fp,"set cntrparam points %d\n", contour_pts);
fprintf(fp,"set size %ssquare %g,%g\n",square?"":"no",xsize,ysize);
fprintf(fp,"set origin %g,%g\n",xoffset,yoffset);
fprintf(fp,"set data style ");
switch (data_style) {
case LINES: fprintf(fp,"lines\n"); break;
case POINTSTYLE: fprintf(fp,"points\n"); break;
case IMPULSES: fprintf(fp,"impulses\n"); break;
case LINESPOINTS: fprintf(fp,"linespoints\n"); break;
case DOTS: fprintf(fp,"dots\n"); break;
case YERRORBARS: fprintf(fp,"yerrorbars\n"); break;
case XERRORBARS: fprintf(fp,"xerrorbars\n"); break;
case XYERRORBARS: fprintf(fp,"xyerrorbars\n"); break;
case BOXES: fprintf(fp,"boxes\n"); break;
case BOXERROR: fprintf(fp,"boxerrorbars\n"); break;
case BOXXYERROR: fprintf(fp,"boxxyerrorbars\n"); break;
case STEPS: fprintf(fp,"steps\n"); break; /* JG */
case FSTEPS: fprintf(fp,"fsteps\n"); break; /* HOE */
case VECTOR : fprintf(fp, "vector\n"); break;
}
fprintf(fp,"set function style ");
switch (func_style) {
case LINES: fprintf(fp,"lines\n"); break;
case POINTSTYLE: fprintf(fp,"points\n"); break;
case IMPULSES: fprintf(fp,"impulses\n"); break;
case LINESPOINTS: fprintf(fp,"linespoints\n"); break;
case DOTS: fprintf(fp,"dots\n"); break;
case YERRORBARS: fprintf(fp,"yerrorbars\n"); break;
case XERRORBARS: fprintf(fp,"xerrorbars\n"); break;
case XYERRORBARS: fprintf(fp,"xyerrorbars\n"); break;
case BOXXYERROR: fprintf(fp,"boxxyerrorbars\n"); break;
case BOXES: fprintf(fp,"boxes\n"); break;
case BOXERROR: fprintf(fp,"boxerrorbars\n"); break;
case STEPS: fprintf(fp,"steps\n"); break; /* JG */
case FSTEPS: fprintf(fp,"fsteps\n"); break; /* HOE */
case VECTOR: fprintf(fp,"vector\n"); break;
}
fprintf(fp,"set xzeroaxis %d\n", xzeroaxis+1);
fprintf(fp,"set x2zeroaxis %d\n", x2zeroaxis+1);
fprintf(fp,"set yzeroaxis %d\n", yzeroaxis+1);
fprintf(fp,"set y2zeroaxis %d\n", y2zeroaxis+1);
fprintf(fp,"set tics %s\n", (tic_in)? "in" : "out");
fprintf(fp,"set ticslevel %g\n", ticslevel);
fprintf(fp,"set ticscale %g %g\n", ticscale, miniticscale);
#define SAVE_XYZLABEL(name,lab) { \
fprintf(fp, "set %s \"%s\" %f,%f ", \
name, conv_text(str,lab.text),lab.xoffset,lab.yoffset); \
fprintf(fp, " \"%s\"\n", conv_text(str, lab.font)); \
}
#define SAVE_MINI(name,m,freq) switch(m&TICS_MASK) { \
case 0: fprintf(fp, "set no %s\n", name); break; \
case MINI_AUTO: fprintf(fp, "set %s\n",name); break; \
case MINI_DEFAULT: fprintf(fp, "set %s default\n",name); break; \
case MINI_USER: fprintf(fp, "set %s %f\n", name, freq); break; \
}
SAVE_MINI("mxtics", mxtics, mxtfreq)
SAVE_MINI("mytics", mytics, mytfreq)
SAVE_MINI("mx2tics", mx2tics, mx2tfreq)
SAVE_MINI("my2tics", my2tics, my2tfreq)
save_tics(fp, xtics, FIRST_X_AXIS, &xticdef, "x");
save_tics(fp, ytics, FIRST_Y_AXIS, &yticdef, "y");
save_tics(fp, ztics, FIRST_Z_AXIS, &zticdef, "z");
save_tics(fp, x2tics, SECOND_X_AXIS, &x2ticdef, "x2");
save_tics(fp, y2tics, SECOND_Y_AXIS, &y2ticdef, "y2");
SAVE_XYZLABEL("title", title);
SAVE_XYZLABEL("timestamp", timelabel);
save_range(fp,R_AXIS,rmin,rmax,autoscale_r, "r");
save_range(fp,T_AXIS,tmin,tmax,autoscale_t, "t");
save_range(fp,U_AXIS,umin,umax,autoscale_u, "u");
save_range(fp,V_AXIS,vmin,vmax,autoscale_v, "v");
SAVE_XYZLABEL("xlabel", xlabel);
SAVE_XYZLABEL("x2label", x2label);
if (strlen(timefmt)) {
fprintf(fp,"set timefmt \"%s\"\n", conv_text(str,timefmt));
}
save_range(fp,FIRST_X_AXIS,xmin,xmax,autoscale_x, "x");
save_range(fp,SECOND_X_AXIS,x2min,x2max,autoscale_x2, "x2");
SAVE_XYZLABEL("ylabel", ylabel);
SAVE_XYZLABEL("y2label", y2label);
save_range(fp,FIRST_Y_AXIS,ymin,ymax,autoscale_y, "y");
save_range(fp,SECOND_Y_AXIS,y2min,y2max,autoscale_y2, "y2");
SAVE_XYZLABEL("zlabel", zlabel);
save_range(fp,FIRST_Z_AXIS,zmin,zmax,autoscale_z, "z");
fprintf(fp,"set zero %g\n",zero);
fprintf(fp,"set lmargin %d\nset bmargin %d\nset rmargin %d\nset tmargin %d\n",
lmargin, bmargin, rmargin, tmargin);
fprintf(fp,"set locale \"%s\"\n", cur_locale);
}
static void save_tics(fp, where, axis, tdef, text)
FILE *fp;
int where;
int axis;
struct ticdef *tdef;
char *text;
{
if (where==NO_TICS) {
fprintf(fp, "set no%stics\n", text);
return;
}
fprintf(fp,"set %stics %s %smirror", text, (where&TICS_MASK)==TICS_ON_AXIS ? "axis" : "border", (where&TICS_MIRROR) ? "" : "no");
switch(tdef->type) {
case TIC_COMPUTED: {
break;
}
case TIC_MONTH:{
fprintf(fp,"\nset %smtics",text);
break;
}
case TIC_DAY:{
fprintf(fp,"\nset %cdtics",axis);
break;
}
case TIC_SERIES:
if ( datatype[axis] == TIME ) {
if (tdef->def.series.start != -VERYLARGE) {
char fd[26];
gstrftime(fd,24,timefmt,(double)tdef->def.series.start);
fprintf(fp, "\"%s\",", fd);
}
fprintf(fp,"%g",tdef->def.series.incr);
if (tdef->def.series.end != VERYLARGE) {
char td[26];
gstrftime(td,24,timefmt,(double)tdef->def.series.end);
fprintf(fp,",\"%s\"",td);
}
} else { /* !TIME */
if (tdef->def.series.start != -VERYLARGE)
fprintf(fp, "%g,", tdef->def.series.start);
fprintf(fp, "%g", tdef->def.series.incr);
if (tdef->def.series.end != VERYLARGE)
fprintf(fp, ",%g", tdef->def.series.end);
}
break;
case TIC_USER: {
register struct ticmark *t;
int time;
time = (datatype[axis] == TIME);
fprintf(fp, " (");
for (t = tdef->def.user; t != NULL; t=t->next) {
if (t->label)
fprintf(fp, "\"%s\" ", t->label);
if (time) {
char td[26];
gstrftime(td,24,timefmt,(double)t->position);
fprintf(fp,"\"%s\"",td);
} else {
fprintf(fp, "%g", t->position);
}
if (t->next) {
fprintf(fp, ", ");
}
}
fprintf(fp, ")");
break;
}
}
putc('\n', fp);
}
static void save_position(fp, pos)
FILE *fp;
struct position *pos;
{
static char *msg[]={"first_axes ","second axes ", "graph ", "screen "};
assert(first_axes==0 && second_axes==1 && graph==2 && screen==3);
fprintf(fp, "%s%g, %s%g, %s%g",
pos->scalex == first_axes ? "" : msg[pos->scalex], pos->x,
pos->scaley == pos->scalex ? "" : msg[pos->scaley], pos->y,
pos->scalez == pos->scaley ? "" : msg[pos->scalez], pos->z);
}
void load_file(fp, name, can_do_args)
FILE *fp;
char *name;
TBOOLEAN can_do_args;
{
register int len;
int start, left;
int more;
int stop = FALSE;
lf_push(fp); /* save state for errors and recursion */
do_load_arg_substitution = can_do_args;
if (fp == (FILE *)NULL) {
char errbuf[BUFSIZ];
(void) sprintf(errbuf, "Cannot open %s file '%s'",
can_do_args ? "call" : "load", name);
os_error(errbuf, c_token);
} else {
/* go into non-interactive mode during load */
/* will be undone below, or in load_file_error */
interactive = FALSE;
inline_num = 0;
infile_name = name;
if (can_do_args) {
int aix = 0;
while (++c_token < num_tokens && aix <= 9) {
if (isstring(c_token))
m_quote_capture(&call_args[aix++], c_token, c_token);
else
m_capture(&call_args[aix++], c_token, c_token);
}
if (c_token >= num_tokens && aix > 9)
int_error("too many arguments for CALL <file>", ++c_token);
}
while (!stop) { /* read all commands in file */
/* read one command */
left = input_line_len;
start = 0;
more = TRUE;
while (more) {
if (fgets(&(input_line[start]), left, fp) == (char *)NULL) {
stop = TRUE; /* EOF in file */
input_line[start] = '\0';
more = FALSE;
} else {
inline_num++;
len = strlen(input_line) - 1;
if (input_line[len] == '\n') { /* remove any newline */
input_line[len] = '\0';
/* Look, len was 1-1 = 0 before, take care here! */
if (len > 0) --len;
} else if (len+2 >= left) {
extend_input_line();
left=input_line_len-len-1;
start=len+1;
continue; /* don't check for '\' */
}
if (input_line[len] == '\\') {
/* line continuation */
start = len;
left = input_line_len - start;
} else
more = FALSE;
}
}
if (strlen(input_line) > 0) {
if (can_do_args) {
register int il = 0;
register char *rl;
char *raw_line=rl=alloc((unsigned long)strlen(input_line)+1, "string");
strcpy(raw_line, input_line);
*input_line='\0';
while( *rl ) {
register int aix;
if (*rl == '$' &&
(aix = *(++rl)) && aix >= '0' && aix <= '9') {
if (call_args[aix -= '0']) {
len = strlen(call_args[aix]);
while(input_line_len-il<len+1) {
extend_input_line();
}
strcpy(input_line+il, call_args[aix]);
il += len;
}
} else {
/* substitute for $<n> here */
if(il+1>input_line_len) {
extend_input_line();
}
input_line[il++] = *rl;
}
rl++;
}
if(il+1>input_line_len) {
extend_input_line();
}
input_line[il] = '\0';
free(raw_line);
}
screen_ok = FALSE; /* make sure command line is
echoed on error */
do_line();
}
}
}
/* pop state */
(void) lf_pop(); /* also closes file fp */
}
/* pop from load_file state stack */
static TBOOLEAN /* FALSE if stack was empty */
lf_pop() /* called by load_file and load_file_error */
{
LFS *lf;
if (lf_head == NULL)
return(FALSE);
else {
int argindex;
lf = lf_head;
if (lf->fp != (FILE *)NULL)
(void) fclose(lf->fp);
for (argindex = 0; argindex < 10; argindex++) {
if (call_args[argindex]) {
free(call_args[argindex]);
}
call_args[argindex] = lf->call_args[argindex];
}
do_load_arg_substitution = lf->do_load_arg_substitution;
interactive = lf->interactive;
inline_num = lf->inline_num;
infile_name = lf->name;
lf_head = lf->prev;
free((char *)lf);
return(TRUE);
}
}
/* push onto load_file state stack */
/* essentially, we save information needed to undo the load_file changes */
static void
lf_push(fp) /* called by load_file */
FILE *fp;
{
LFS *lf;
int argindex;
lf = (LFS *)alloc((unsigned long)sizeof(LFS), (char *)NULL);
if (lf == (LFS *)NULL) {
if (fp != (FILE *)NULL)
(void) fclose(fp); /* it won't be otherwise */
int_error("not enough memory to load file", c_token);
}
lf->fp = fp; /* save this file pointer */
lf->name = infile_name; /* save current name */
lf->interactive = interactive; /* save current state */
lf->inline_num = inline_num; /* save current line number */
lf->do_load_arg_substitution = do_load_arg_substitution;
for (argindex = 0; argindex < 10; argindex++) {
lf->call_args[argindex] = call_args[argindex];
call_args[argindex] = NULL; /* initially no args */
}
lf->prev = lf_head; /* link to stack */
lf_head = lf;
}
FILE *lf_top() /* used for reread vsnyder@math.jpl.nasa.gov */
{ if (lf_head == (LFS *) NULL) return((FILE *)NULL);
return(lf_head->fp);
}
void load_file_error() /* called from main */
{
/* clean up from error in load_file */
/* pop off everything on stack */
while(lf_pop())
;
}
/* find char c in string str; return p such that str[p]==c;
* if c not in str then p=strlen(str)
*/
#ifdef ANSI_C
int instring(char *str,char c)
#else
int
instring(str, c)
char *str;
char c;
#endif
{
int pos = 0;
while (str != NULL && *str != '\0' && c != *str) {
str++;
pos++;
}
return (pos);
}
void show_functions()
{
register struct udft_entry *udf = first_udf;
fprintf(stderr,"\n\tUser-Defined Functions:\n");
while (udf) {
if (udf->definition)
fprintf(stderr,"\t%s\n",udf->definition);
else
fprintf(stderr,"\t%s is undefined\n",udf->udf_name);
udf = udf->next_udf;
}
}
void show_at()
{
(void) putc('\n',stderr);
disp_at(temp_at(),0);
}
void disp_at(curr_at, level)
struct at_type *curr_at;
int level;
{
register int i, j;
register union argument *arg;
for (i = 0; i < curr_at->a_count; i++) {
(void) putc('\t',stderr);
for (j = 0; j < level; j++)
(void) putc(' ',stderr); /* indent */
/* print name of instruction */
fputs(ft[(int)(curr_at->actions[i].index)].f_name,stderr);
arg = &(curr_at->actions[i].arg);
/* now print optional argument */
switch(curr_at->actions[i].index) {
case PUSH: fprintf(stderr," %s\n", arg->udv_arg->udv_name);
break;
case PUSHC: (void) putc(' ',stderr);
disp_value(stderr,&(arg->v_arg));
(void) putc('\n',stderr);
break;
case PUSHD1: fprintf(stderr," %c dummy\n",
arg->udf_arg->udf_name[0]);
break;
case PUSHD2: fprintf(stderr," %c dummy\n",
arg->udf_arg->udf_name[1]);
break;
case CALL: fprintf(stderr," %s", arg->udf_arg->udf_name);
if(level < 6) {
if (arg->udf_arg->at) {
(void) putc('\n',stderr);
disp_at(arg->udf_arg->at,level+2); /* recurse! */
} else
fputs(" (undefined)\n",stderr);
} else
(void) putc('\n',stderr);
break;
case CALLN: fprintf(stderr," %s", arg->udf_arg->udf_name);
if(level < 6) {
if (arg->udf_arg->at) {
(void) putc('\n',stderr);
disp_at(arg->udf_arg->at,level+2); /* recurse! */
} else
fputs(" (undefined)\n",stderr);
} else
(void) putc('\n',stderr);
break;
case JUMP:
case JUMPZ:
case JUMPNZ:
case JTERN:
fprintf(stderr," +%d\n",arg->j_arg);
break;
default:
(void) putc('\n',stderr);
}
}
}
/* find max len of keys and count keys with len > 0 */
int
find_maxl_keys(plots,count,kcnt)
struct curve_points *plots;
int count, *kcnt;
{
int mlen, len, curve, cnt;
register struct curve_points *this_plot;
mlen = cnt = 0;
this_plot = plots;
for (curve = 0; curve < count; this_plot = this_plot->next_cp, curve++)
if (this_plot->title && (len = /*assign*/ strlen(this_plot->title))) {
cnt++;
if (len > mlen)
mlen = strlen(this_plot->title);
}
if ( kcnt != NULL ) *kcnt = cnt;
return(mlen);
}
int
find_maxl_keys3d(plots,count,kcnt)
struct surface_points *plots;
int count, *kcnt;
{
int mlen, len, surf, cnt;
struct surface_points *this_plot;
mlen = cnt = 0;
this_plot = plots;
for (surf = 0; surf < count; this_plot = this_plot->next_sp, surf++) {
if (this_plot->title && *this_plot->title &&
(draw_surface || (draw_contour && !label_contours))) {
++cnt;
len = strlen(this_plot->title);
if (len > mlen)
mlen = len;
}
if (draw_contour && label_contours && this_plot->contours != NULL) {
len = find_maxl_cntr(this_plot->contours,&cnt);
if ( len > mlen )
mlen = len;
}
}
if ( kcnt != NULL ) *kcnt = cnt;
return(mlen);
}
static int
find_maxl_cntr(contours,count)
struct gnuplot_contours *contours;
int *count;
{
register int cnt;
register int mlen, len;
register struct gnuplot_contours *cntrs = contours;
mlen = cnt = 0;
while (cntrs) {
if(label_contours && cntrs->isNewLevel) {
len = strlen(cntrs->label);
if (len)
cnt++;
if (len > mlen)
mlen = len;
}
cntrs = cntrs->next;
}
*count += cnt;
return(mlen);
}
static void
save_range(fp,axis,min,max,autosc,text)
FILE *fp;
int axis;
double min,max;
TBOOLEAN autosc;
char *text;
{
char s[25];
int i;
i = axis;
fprintf(fp,"set %srange [ ",text);
if ( autosc & 1 ) {
fprintf(fp,"*");
} else {
if ( datatype[axis] == TIME ) {
fprintf(fp,"\"");
gstrftime(s,24,timefmt,(double)min);
for(i=0;i<strlen(s);i++) {
if ( s[i] == '\t' )
fprintf(fp,"\\t");
else if ( s[i] > 126 || s[i] < 32 )
fprintf(fp,"\\%o",s[i]);
else
fprintf(fp,"%c",s[i]);
}
fprintf(fp,"\"");
} else
fprintf(fp,"%g",min);
}
fprintf(fp," : ");
if ( autosc & 2 ) {
fprintf(fp,"*");
} else {
if ( datatype[axis] == TIME ) {
fprintf(fp,"\"");
gstrftime(s,24,timefmt,(double)max);
for(i=0;i<strlen(s);i++) {
if ( s[i] == '\t' )
fprintf(fp,"\\t");
else if ( (s[i] & 0177) < 127 && (s[i] & 0177) > 31 )
fprintf(fp,"%c",s[i]);
else
fprintf(fp,"\\%o",s[i]);
}
fprintf(fp,"\"");
} else
fprintf(fp,"%g",max);
}
fprintf(fp," ] %sreverse %swriteback\n",
range_flags[axis] & RANGE_REVERSE ? "" : "no",
range_flags[axis] & RANGE_WRITEBACK ? "" : "no");
}
/* check user defined format strings for valid double conversions */
#ifdef ANSI_C
TBOOLEAN valid_format( const char *format)
#else
TBOOLEAN valid_format( format)
const char *format;
#endif
{
for (;;) {
if (!(format = strchr( format, '%'))) /* look for format spec */
return TRUE; /* passed Test */
do { /* scan format statement */
format++;
} while (strchr( "+-#0123456789.", *format));
switch (*format) { /* Now at format modifier */
case '*' : /* Ignore '*' statements */
case '%' : /* Char '%' itself */
format++;
continue;
break;
case 'l' : /* Now we found it !!! */
if (!strchr( "fFeEgG", format[1])) /* looking for a valid format */
return FALSE;
format++;
break;
default :
return FALSE;
}
}
}