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- #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;
- }
- }
- }
-