| 1 |
greg |
1.1 |
#ifndef lint
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| 2 |
schorsch |
1.6 |
static const char RCSid[] = "$Id: mgvars.c,v 1.5 2003/11/15 02:13:37 schorsch Exp $";
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| 3 |
greg |
1.1 |
#endif
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| 4 |
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/*
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| 5 |
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* mgvars.c - routines dealing with graph variables.
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| 6 |
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*
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| 7 |
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* 6/23/86
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| 8 |
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*
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| 9 |
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* Greg Ward Larson
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| 10 |
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*/
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| 11 |
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| 12 |
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#include <stdio.h>
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| 13 |
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#include <stdlib.h>
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| 14 |
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#include <math.h>
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| 15 |
schorsch |
1.4 |
#include <string.h>
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| 16 |
greg |
1.1 |
#include <ctype.h>
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| 17 |
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| 18 |
schorsch |
1.3 |
#include "rtprocess.h"
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| 19 |
schorsch |
1.6 |
#include "rtmisc.h"
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| 20 |
schorsch |
1.4 |
#include "rterror.h"
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| 21 |
schorsch |
1.3 |
#include "rtio.h"
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| 22 |
schorsch |
1.4 |
#include "calcomp.h"
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| 23 |
greg |
1.1 |
#include "mgvars.h"
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| 24 |
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| 25 |
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#define MAXLINE 512
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| 26 |
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| 27 |
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#define isnum(c) (isdigit(c)||(c)=='-'||(c)=='+'||(c)=='.'||(c)=='e'||(c)=='E')
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| 28 |
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| 29 |
schorsch |
1.4 |
static void mgprint(register VARIABLE *vp, FILE *fp);
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| 30 |
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static void setivar(char *vname, char *fname, char *definition);
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| 31 |
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static char *findfile(char *fname, register char **pathlist);
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| 32 |
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static void loaddata(char *fname, FILE *fp, register DARRAY *dp);
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| 33 |
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static void undefine(register VARIABLE *vp);
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| 34 |
greg |
1.1 |
|
| 35 |
schorsch |
1.4 |
extern char *progname, *libpath[];
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| 36 |
greg |
1.1 |
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| 37 |
|
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IVAR *ivhead = NULL; /* intermediate variables */
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| 38 |
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| 39 |
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VARIABLE gparam[NVARS] = { /* standard variables */
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| 40 |
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{ "fthick", REAL, "frame thickness" },
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| 41 |
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{ "grid", REAL, "grid on?" },
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| 42 |
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{ "legend", STRING, "legend title" },
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| 43 |
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{ "othick", REAL, "origin thickness" },
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| 44 |
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{ "period", REAL, "period of polar plot" },
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| 45 |
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{ "subtitle", STRING },
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| 46 |
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{ "symfile", STRING, "symbol file" },
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| 47 |
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{ "tstyle", REAL, "tick mark style" },
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| 48 |
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{ "title", STRING },
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| 49 |
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{ "xlabel", STRING },
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| 50 |
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{ "xmap", FUNCTION, "x axis mapping function" },
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| 51 |
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{ "xmax", REAL },
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| 52 |
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{ "xmin", REAL },
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| 53 |
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{ "xstep", REAL },
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| 54 |
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{ "ylabel", STRING },
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| 55 |
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{ "ymap", FUNCTION, "y axis mapping function" },
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| 56 |
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{ "ymax", REAL },
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| 57 |
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{ "ymin", REAL },
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| 58 |
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{ "ystep", REAL },
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| 59 |
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};
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| 60 |
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| 61 |
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VARIABLE cparam[MAXCUR][NCVARS] = { /* curve variables */
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| 62 |
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{
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{ "A", FUNCTION, "function for curve A" },
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| 64 |
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{ "Acolor", REAL, "color for A" },
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| 65 |
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{ "Adata", DATA, "point data for A" },
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| 66 |
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{ "Alabel", STRING },
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| 67 |
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{ "Alintype", REAL, "line type for A" },
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| 68 |
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{ "Anpoints", REAL, "number of points for A" },
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| 69 |
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{ "Asymsize", REAL, "symbol size for A" },
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| 70 |
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{ "Asymtype", STRING, "symbol type for A" },
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| 71 |
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{ "Athick", REAL, "line thickness for A" },
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| 72 |
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}, {
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| 73 |
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{ "B", FUNCTION, "function for curve B" },
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| 74 |
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{ "Bcolor", REAL, "color for B" },
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| 75 |
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{ "Bdata", DATA, "point data for B" },
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| 76 |
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{ "Blabel", STRING },
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| 77 |
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{ "Blintype", REAL, "line type for B" },
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| 78 |
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{ "Bnpoints", REAL, "number of points for B" },
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| 79 |
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{ "Bsymsize", REAL, "symbol size for B" },
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| 80 |
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{ "Bsymtype", STRING, "symbol type for B" },
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| 81 |
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{ "Bthick", REAL, "line thickness for B" },
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| 82 |
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}, {
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| 83 |
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{ "C", FUNCTION, "function for curve C" },
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| 84 |
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{ "Ccolor", REAL, "color for C" },
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| 85 |
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{ "Cdata", DATA, "point data for C" },
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| 86 |
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{ "Clabel", STRING },
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| 87 |
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{ "Clintype", REAL, "line type for C" },
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| 88 |
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{ "Cnpoints", REAL, "number of points for C" },
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| 89 |
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{ "Csymsize", REAL, "symbol size for C" },
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| 90 |
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{ "Csymtype", STRING, "symbol type for C" },
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| 91 |
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{ "Cthick", REAL, "line thickness for C" },
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| 92 |
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}, {
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| 93 |
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{ "D", FUNCTION, "function for curve D" },
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| 94 |
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{ "Dcolor", REAL, "color for D" },
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| 95 |
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{ "Ddata", DATA, "point data for D" },
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| 96 |
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{ "Dlabel", STRING },
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| 97 |
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{ "Dlintype", REAL, "line type for D" },
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| 98 |
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{ "Dnpoints", REAL, "number of points for D" },
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| 99 |
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{ "Dsymsize", REAL, "symbol size for D" },
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| 100 |
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{ "Dsymtype", STRING, "symbol type for D" },
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| 101 |
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{ "Dthick", REAL, "line thickness for D" },
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| 102 |
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}, {
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| 103 |
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{ "E", FUNCTION, "function for curve E" },
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| 104 |
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{ "Ecolor", REAL, "color for E" },
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| 105 |
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{ "Edata", DATA, "point data for E" },
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| 106 |
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{ "Elabel", STRING },
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| 107 |
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{ "Elintype", REAL, "line type for E" },
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| 108 |
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{ "Enpoints", REAL, "number of points for E" },
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| 109 |
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{ "Esymsize", REAL, "symbol size for E" },
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| 110 |
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{ "Esymtype", STRING, "symbol type for E" },
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| 111 |
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{ "Ethick", REAL, "line thickness for E" },
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| 112 |
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}, {
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| 113 |
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{ "F", FUNCTION, "function for curve F" },
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| 114 |
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{ "Fcolor", REAL, "color for F" },
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| 115 |
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{ "Fdata", DATA, "point data for F" },
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| 116 |
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{ "Flabel", STRING },
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| 117 |
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{ "Flintype", REAL, "line type for F" },
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| 118 |
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{ "Fnpoints", REAL, "number of points for F" },
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| 119 |
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{ "Fsymsize", REAL, "symbol size for F" },
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| 120 |
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{ "Fsymtype", STRING, "symbol type for F" },
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| 121 |
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{ "Fthick", REAL, "line thickness for F" },
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| 122 |
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}, {
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| 123 |
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{ "G", FUNCTION, "function for curve G" },
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| 124 |
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{ "Gcolor", REAL, "color for G" },
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| 125 |
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{ "Gdata", DATA, "point data for G" },
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| 126 |
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{ "Glabel", STRING },
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| 127 |
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{ "Glintype", REAL, "line type for G" },
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| 128 |
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{ "Gnpoints", REAL, "number of points for G" },
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| 129 |
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{ "Gsymsize", REAL, "symbol size for G" },
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| 130 |
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{ "Gsymtype", STRING, "symbol type for G" },
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| 131 |
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{ "Gthick", REAL, "line thickness for G" },
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| 132 |
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}, {
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| 133 |
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{ "H", FUNCTION, "function for curve H" },
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| 134 |
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{ "Hcolor", REAL, "color for H" },
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| 135 |
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{ "Hdata", DATA, "point data for H" },
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| 136 |
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{ "Hlabel", STRING },
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| 137 |
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{ "Hlintype", REAL, "line type for H" },
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| 138 |
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{ "Hnpoints", REAL, "number of points for H" },
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| 139 |
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{ "Hsymsize", REAL, "symbol size for H" },
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| 140 |
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{ "Hsymtype", STRING, "symbol type for H" },
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| 141 |
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{ "Hthick", REAL, "line thickness for H" },
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| 142 |
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},
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| 143 |
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};
|
| 144 |
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| 145 |
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| 146 |
schorsch |
1.4 |
void
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| 147 |
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mgclearall(void) /* clear all variable settings */
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| 148 |
greg |
1.1 |
{
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| 149 |
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int j;
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| 150 |
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register IVAR *iv;
|
| 151 |
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register int i;
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| 152 |
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| 153 |
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for (iv = ivhead; iv != NULL; iv = iv->next) {
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| 154 |
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dremove(iv->name);
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| 155 |
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freestr(iv->name);
|
| 156 |
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freestr(iv->dfn);
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| 157 |
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efree((char *)iv);
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| 158 |
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}
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| 159 |
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ivhead = NULL;
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| 160 |
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| 161 |
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for (i = 0; i < NVARS; i++)
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| 162 |
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if (gparam[i].flags & DEFINED)
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| 163 |
|
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undefine(&gparam[i]);
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| 164 |
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| 165 |
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for (j = 0; j < MAXCUR; j++)
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| 166 |
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for (i = 0; i < NCVARS; i++)
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| 167 |
|
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if (cparam[j][i].flags & DEFINED)
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| 168 |
|
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undefine(&cparam[j][i]);
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| 169 |
|
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}
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| 170 |
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| 171 |
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| 172 |
schorsch |
1.4 |
void
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| 173 |
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mgload( /* load a file */
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| 174 |
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char *file
|
| 175 |
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)
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| 176 |
greg |
1.1 |
{
|
| 177 |
|
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FILE *fp;
|
| 178 |
|
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char sbuf[MAXLINE], *fgets();
|
| 179 |
|
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int inquote;
|
| 180 |
|
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register char *cp, *cp2;
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| 181 |
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| 182 |
|
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if (file == NULL) {
|
| 183 |
|
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fp = stdin;
|
| 184 |
|
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file = "<stdin>";
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| 185 |
|
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} else if ((fp = fopen(file, "r")) == NULL) {
|
| 186 |
|
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fprintf(stderr, "%s: Cannot open: %s\n", progname, file);
|
| 187 |
|
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quit(1);
|
| 188 |
|
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}
|
| 189 |
|
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while (fgets(sbuf+1, sizeof(sbuf)-1, fp) != NULL) {
|
| 190 |
|
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inquote = 0;
|
| 191 |
|
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cp2 = sbuf;
|
| 192 |
|
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for (cp = sbuf+1; *cp; cp++) /* condition the input line */
|
| 193 |
|
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switch (*cp) {
|
| 194 |
|
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case '#':
|
| 195 |
|
|
if (!inquote) {
|
| 196 |
|
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cp[0] = '\n';
|
| 197 |
|
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cp[1] = '\0';
|
| 198 |
|
|
break;
|
| 199 |
|
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}
|
| 200 |
|
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*cp2++ = *cp;
|
| 201 |
|
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break;
|
| 202 |
|
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case '"':
|
| 203 |
|
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inquote = !inquote;
|
| 204 |
|
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break;
|
| 205 |
|
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case '\\':
|
| 206 |
|
|
if (!cp[1])
|
| 207 |
|
|
break;
|
| 208 |
|
|
if (cp[1] == '\n') {
|
| 209 |
|
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cp[0] = '\0';
|
| 210 |
|
|
fgets(cp, sizeof(sbuf)-(cp-sbuf), fp);
|
| 211 |
|
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cp--;
|
| 212 |
|
|
break;
|
| 213 |
|
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}
|
| 214 |
|
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*cp2++ = *++cp;
|
| 215 |
|
|
break;
|
| 216 |
|
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case ' ':
|
| 217 |
|
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case '\t':
|
| 218 |
|
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case '\n':
|
| 219 |
|
|
if (!inquote)
|
| 220 |
|
|
break;
|
| 221 |
|
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*cp2++ = *cp;
|
| 222 |
|
|
break;
|
| 223 |
|
|
default:
|
| 224 |
|
|
*cp2++ = *cp;
|
| 225 |
|
|
break;
|
| 226 |
|
|
}
|
| 227 |
|
|
*cp2 = '\0';
|
| 228 |
|
|
if (inquote) {
|
| 229 |
|
|
fputs(sbuf, stderr);
|
| 230 |
|
|
fprintf(stderr, "%s: %s: Missing quote\n",
|
| 231 |
|
|
progname, file);
|
| 232 |
|
|
quit(1);
|
| 233 |
|
|
}
|
| 234 |
|
|
if (sbuf[0])
|
| 235 |
|
|
setmgvar(file, fp, sbuf);
|
| 236 |
|
|
}
|
| 237 |
|
|
if (fp != stdin)
|
| 238 |
|
|
fclose(fp);
|
| 239 |
|
|
}
|
| 240 |
|
|
|
| 241 |
|
|
|
| 242 |
schorsch |
1.4 |
void
|
| 243 |
|
|
mgsave( /* save our variables */
|
| 244 |
|
|
char *file
|
| 245 |
|
|
)
|
| 246 |
greg |
1.1 |
{
|
| 247 |
|
|
FILE *fp;
|
| 248 |
|
|
int j;
|
| 249 |
|
|
register IVAR *iv;
|
| 250 |
|
|
register int i;
|
| 251 |
|
|
|
| 252 |
|
|
if (file == NULL)
|
| 253 |
|
|
fp = stdout;
|
| 254 |
|
|
else if ((fp = fopen(file, "w")) == NULL) {
|
| 255 |
|
|
fprintf(stderr, "%s: Cannot write: %s\n", progname, file);
|
| 256 |
|
|
quit(1);
|
| 257 |
|
|
}
|
| 258 |
|
|
for (iv = ivhead; iv != NULL; iv = iv->next)
|
| 259 |
|
|
fprintf(fp, "%s\n", iv->dfn);
|
| 260 |
|
|
|
| 261 |
|
|
for (i = 0; i < NVARS; i++)
|
| 262 |
|
|
if (gparam[i].flags & DEFINED)
|
| 263 |
|
|
mgprint(&gparam[i], fp);
|
| 264 |
|
|
|
| 265 |
|
|
for (j = 0; j < MAXCUR; j++)
|
| 266 |
|
|
for (i = 0; i < NCVARS; i++)
|
| 267 |
|
|
if (cparam[j][i].flags & DEFINED)
|
| 268 |
|
|
mgprint(&cparam[j][i], fp);
|
| 269 |
|
|
|
| 270 |
|
|
if (fp != stdout)
|
| 271 |
|
|
fclose(fp);
|
| 272 |
|
|
}
|
| 273 |
|
|
|
| 274 |
|
|
|
| 275 |
schorsch |
1.4 |
void
|
| 276 |
|
|
setmgvar( /* set a variable */
|
| 277 |
|
|
char *fname,
|
| 278 |
|
|
FILE *fp,
|
| 279 |
|
|
char *string
|
| 280 |
|
|
)
|
| 281 |
greg |
1.1 |
{
|
| 282 |
|
|
char name[128];
|
| 283 |
|
|
FILE *fp2;
|
| 284 |
|
|
register int i;
|
| 285 |
|
|
register char *s;
|
| 286 |
|
|
register VARIABLE *vp;
|
| 287 |
|
|
|
| 288 |
|
|
if (!strncmp(string, "include=", 8)) { /* include file */
|
| 289 |
|
|
if ((s = findfile(string+8, libpath)) == NULL) {
|
| 290 |
|
|
fprintf(stderr, "%s\n", string);
|
| 291 |
|
|
fprintf(stderr, "%s: %s: File not found: %s\n",
|
| 292 |
|
|
progname, fname, string+8);
|
| 293 |
|
|
quit(1);
|
| 294 |
|
|
}
|
| 295 |
|
|
strcpy(name, s);
|
| 296 |
|
|
mgload(name);
|
| 297 |
|
|
return;
|
| 298 |
|
|
}
|
| 299 |
|
|
s = string;
|
| 300 |
|
|
i = 0;
|
| 301 |
|
|
while (i < sizeof(name)-1 && isid(*s))
|
| 302 |
|
|
name[i++] = *s++;
|
| 303 |
|
|
name[i] = '\0';
|
| 304 |
|
|
vp = vlookup(name);
|
| 305 |
|
|
if (vp != NULL) {
|
| 306 |
|
|
undefine(vp);
|
| 307 |
|
|
switch (vp->type) {
|
| 308 |
|
|
case REAL:
|
| 309 |
|
|
case FUNCTION:
|
| 310 |
|
|
if ((*s == '(') != (vp->type == FUNCTION)) {
|
| 311 |
|
|
fprintf(stderr, "%s\n", string);
|
| 312 |
|
|
fprintf(stderr,
|
| 313 |
|
|
"%s: %s: Bad %s declaration: %s\n",
|
| 314 |
|
|
progname, fname,
|
| 315 |
|
|
vp->type == FUNCTION ?
|
| 316 |
|
|
"function" : "variable",
|
| 317 |
|
|
name);
|
| 318 |
|
|
quit(1);
|
| 319 |
|
|
}
|
| 320 |
|
|
scompile(string, fname, 0);
|
| 321 |
|
|
vp->v.dfn = savestr(string);
|
| 322 |
|
|
break;
|
| 323 |
|
|
case STRING:
|
| 324 |
|
|
if (*s++ != '=') {
|
| 325 |
|
|
fprintf(stderr, "%s\n", string);
|
| 326 |
|
|
fprintf(stderr, "%s: %s: Missing '='\n",
|
| 327 |
|
|
progname, fname);
|
| 328 |
|
|
quit(1);
|
| 329 |
|
|
}
|
| 330 |
|
|
vp->v.s = savestr(s);
|
| 331 |
|
|
break;
|
| 332 |
|
|
case DATA:
|
| 333 |
|
|
if (*s++ != '=') {
|
| 334 |
|
|
fprintf(stderr, "%s\n", string);
|
| 335 |
|
|
fprintf(stderr, "%s: %s: Missing '='\n",
|
| 336 |
|
|
progname, fname);
|
| 337 |
|
|
quit(1);
|
| 338 |
|
|
}
|
| 339 |
|
|
if (!*s) {
|
| 340 |
|
|
loaddata(fname, fp, &vp->v.d);
|
| 341 |
|
|
} else if (*s == '!') {
|
| 342 |
|
|
if ((fp2 = popen(s+1, "r")) == NULL) {
|
| 343 |
|
|
fprintf(stderr, "%s\n", string);
|
| 344 |
|
|
fprintf(stderr,
|
| 345 |
|
|
"%s: %s: Cannot execute: %s\n",
|
| 346 |
|
|
progname, fname, s+1);
|
| 347 |
|
|
quit(1);
|
| 348 |
|
|
}
|
| 349 |
|
|
loaddata(s, fp2, &vp->v.d);
|
| 350 |
|
|
pclose(fp2);
|
| 351 |
|
|
} else {
|
| 352 |
|
|
if ((fp2 = fopen(s, "r")) == NULL) {
|
| 353 |
|
|
fprintf(stderr, "%s\n", string);
|
| 354 |
|
|
fprintf(stderr,
|
| 355 |
|
|
"%s: %s: Data file not found: %s\n",
|
| 356 |
|
|
progname, fname, s);
|
| 357 |
|
|
quit(1);
|
| 358 |
|
|
}
|
| 359 |
|
|
loaddata(s, fp2, &vp->v.d);
|
| 360 |
|
|
fclose(fp2);
|
| 361 |
|
|
}
|
| 362 |
|
|
break;
|
| 363 |
|
|
}
|
| 364 |
|
|
vp->flags |= DEFINED;
|
| 365 |
|
|
} else
|
| 366 |
|
|
setivar(name, fname, string); /* intermediate */
|
| 367 |
|
|
}
|
| 368 |
|
|
|
| 369 |
|
|
|
| 370 |
schorsch |
1.4 |
static void
|
| 371 |
|
|
setivar( /* set an intermediate variable */
|
| 372 |
|
|
char *vname,
|
| 373 |
|
|
char *fname,
|
| 374 |
|
|
char *definition
|
| 375 |
|
|
)
|
| 376 |
greg |
1.1 |
{
|
| 377 |
|
|
IVAR ivbeg;
|
| 378 |
|
|
register IVAR *iv;
|
| 379 |
|
|
|
| 380 |
|
|
scompile(definition, fname, 0); /* compile the string */
|
| 381 |
|
|
|
| 382 |
|
|
ivbeg.next = ivhead;
|
| 383 |
|
|
for (iv = &ivbeg; iv->next != NULL; iv = iv->next)
|
| 384 |
|
|
if (!strcmp(vname, iv->next->name)) {
|
| 385 |
|
|
iv = iv->next;
|
| 386 |
|
|
freestr(iv->dfn);
|
| 387 |
|
|
iv->dfn = savestr(definition);
|
| 388 |
|
|
return;
|
| 389 |
|
|
}
|
| 390 |
|
|
|
| 391 |
|
|
iv->next = (IVAR *)emalloc(sizeof(IVAR));
|
| 392 |
|
|
iv = iv->next;
|
| 393 |
|
|
iv->name = savestr(vname);
|
| 394 |
|
|
iv->dfn = savestr(definition);
|
| 395 |
|
|
iv->next = NULL;
|
| 396 |
|
|
ivhead = ivbeg.next;
|
| 397 |
|
|
}
|
| 398 |
|
|
|
| 399 |
|
|
|
| 400 |
schorsch |
1.4 |
void
|
| 401 |
|
|
mgtoa( /* get a variable's value in ascii form */
|
| 402 |
|
|
register char *s,
|
| 403 |
|
|
VARIABLE *vp
|
| 404 |
|
|
)
|
| 405 |
greg |
1.1 |
{
|
| 406 |
|
|
register char *sv;
|
| 407 |
|
|
|
| 408 |
|
|
if (!(vp->flags & DEFINED)) {
|
| 409 |
|
|
strcpy(s, "UNDEFINED");
|
| 410 |
|
|
return;
|
| 411 |
|
|
}
|
| 412 |
|
|
switch (vp->type) {
|
| 413 |
|
|
case REAL:
|
| 414 |
|
|
case FUNCTION:
|
| 415 |
|
|
sv = vp->v.dfn;
|
| 416 |
|
|
while (*sv != '=' && *sv != ':')
|
| 417 |
|
|
sv++;
|
| 418 |
|
|
while (*++sv && *sv != ';')
|
| 419 |
|
|
*s++ = *sv;
|
| 420 |
|
|
*s = '\0';
|
| 421 |
|
|
break;
|
| 422 |
|
|
case STRING:
|
| 423 |
|
|
strcpy(s, vp->v.s);
|
| 424 |
|
|
break;
|
| 425 |
|
|
case DATA:
|
| 426 |
|
|
strcpy(s, "DATA");
|
| 427 |
|
|
break;
|
| 428 |
|
|
}
|
| 429 |
|
|
}
|
| 430 |
|
|
|
| 431 |
|
|
|
| 432 |
schorsch |
1.4 |
static void
|
| 433 |
|
|
mgprint( /* print a variable definition */
|
| 434 |
|
|
register VARIABLE *vp,
|
| 435 |
|
|
FILE *fp
|
| 436 |
|
|
)
|
| 437 |
greg |
1.1 |
{
|
| 438 |
|
|
register int i;
|
| 439 |
|
|
|
| 440 |
|
|
switch (vp->type) {
|
| 441 |
|
|
case REAL:
|
| 442 |
|
|
case FUNCTION:
|
| 443 |
|
|
fprintf(fp, "%s\n", vp->v.dfn);
|
| 444 |
|
|
break;
|
| 445 |
|
|
case STRING:
|
| 446 |
|
|
fprintf(fp, "%s=\"", vp->name);
|
| 447 |
|
|
for (i = 0; vp->v.s[i]; i++)
|
| 448 |
|
|
switch (vp->v.s[i]) {
|
| 449 |
|
|
case '"':
|
| 450 |
|
|
case '\\':
|
| 451 |
|
|
putc('\\', fp);
|
| 452 |
|
|
/* fall through */
|
| 453 |
|
|
default:
|
| 454 |
|
|
putc(vp->v.s[i], fp);
|
| 455 |
|
|
break;
|
| 456 |
|
|
}
|
| 457 |
|
|
fprintf(fp, "\"\n");
|
| 458 |
|
|
break;
|
| 459 |
|
|
case DATA:
|
| 460 |
|
|
fprintf(fp, "%s=", vp->name);
|
| 461 |
|
|
for (i = 0; i < vp->v.d.size; i++) {
|
| 462 |
|
|
if (i % 4 == 0)
|
| 463 |
|
|
fprintf(fp, "\n");
|
| 464 |
|
|
fprintf(fp, "\t%10e", vp->v.d.data[i]);
|
| 465 |
|
|
}
|
| 466 |
|
|
fprintf(fp, "\n;\n");
|
| 467 |
|
|
break;
|
| 468 |
|
|
}
|
| 469 |
|
|
}
|
| 470 |
|
|
|
| 471 |
|
|
|
| 472 |
schorsch |
1.4 |
static void
|
| 473 |
|
|
undefine( /* undefine a variable */
|
| 474 |
|
|
register VARIABLE *vp
|
| 475 |
|
|
)
|
| 476 |
greg |
1.1 |
{
|
| 477 |
|
|
if (vp == NULL || !(vp->flags & DEFINED))
|
| 478 |
|
|
return;
|
| 479 |
|
|
|
| 480 |
|
|
switch (vp->type) {
|
| 481 |
|
|
case REAL:
|
| 482 |
|
|
case FUNCTION:
|
| 483 |
|
|
dremove(vp->name);
|
| 484 |
|
|
freestr(vp->v.dfn);
|
| 485 |
|
|
break;
|
| 486 |
|
|
case STRING:
|
| 487 |
|
|
freestr(vp->v.s);
|
| 488 |
|
|
break;
|
| 489 |
|
|
case DATA:
|
| 490 |
|
|
efree((char *)vp->v.d.data);
|
| 491 |
|
|
break;
|
| 492 |
|
|
}
|
| 493 |
|
|
vp->flags &= ~DEFINED;
|
| 494 |
|
|
}
|
| 495 |
|
|
|
| 496 |
|
|
|
| 497 |
|
|
VARIABLE *
|
| 498 |
|
|
vlookup(vname) /* look up a variable by its name */
|
| 499 |
|
|
char *vname;
|
| 500 |
|
|
{
|
| 501 |
|
|
register int i;
|
| 502 |
|
|
register VARIABLE *vp;
|
| 503 |
|
|
|
| 504 |
|
|
i = vname[0] - 'A';
|
| 505 |
|
|
if (i >= 0 && i < MAXCUR) /* curve variables */
|
| 506 |
|
|
for (vp = cparam[i], i = 0; i < NCVARS; vp++, i++)
|
| 507 |
|
|
if (!strcmp(vp->name, vname))
|
| 508 |
|
|
return(vp);
|
| 509 |
|
|
/* standard variables */
|
| 510 |
|
|
for (vp = gparam; vp < &gparam[NVARS]; vp++)
|
| 511 |
|
|
if (!strcmp(vp->name, vname))
|
| 512 |
|
|
return(vp);
|
| 513 |
|
|
return(NULL); /* not found */
|
| 514 |
|
|
}
|
| 515 |
|
|
|
| 516 |
|
|
|
| 517 |
schorsch |
1.4 |
static void
|
| 518 |
|
|
loaddata( /* load data from a stream */
|
| 519 |
|
|
char *fname,
|
| 520 |
|
|
FILE *fp,
|
| 521 |
|
|
register DARRAY *dp
|
| 522 |
|
|
)
|
| 523 |
greg |
1.1 |
{
|
| 524 |
|
|
char sbuf[MAXLINE], *fgets();
|
| 525 |
|
|
register char *cp;
|
| 526 |
|
|
|
| 527 |
|
|
dp->size = 0;
|
| 528 |
|
|
dp->data = NULL;
|
| 529 |
|
|
while (fgets(sbuf, sizeof(sbuf), fp) != NULL) {
|
| 530 |
|
|
cp = sbuf;
|
| 531 |
|
|
while (*cp) {
|
| 532 |
|
|
while (isspace(*cp) || *cp == ',')
|
| 533 |
|
|
cp++;
|
| 534 |
|
|
if (isnum(*cp)) {
|
| 535 |
|
|
dp->data = (float *)erealloc((char *)dp->data,
|
| 536 |
|
|
(dp->size+1)*sizeof(float));
|
| 537 |
|
|
dp->data[dp->size++] = atof(cp);
|
| 538 |
|
|
do
|
| 539 |
|
|
cp++;
|
| 540 |
|
|
while (isnum(*cp));
|
| 541 |
|
|
} else if (*cp == ';') {
|
| 542 |
|
|
return;
|
| 543 |
|
|
} else if (*cp) {
|
| 544 |
|
|
fputs(sbuf, stderr);
|
| 545 |
|
|
fprintf(stderr, "%s: %s: Bad data\n",
|
| 546 |
|
|
progname, fname);
|
| 547 |
|
|
quit(1);
|
| 548 |
|
|
}
|
| 549 |
|
|
}
|
| 550 |
|
|
}
|
| 551 |
|
|
}
|
| 552 |
|
|
|
| 553 |
|
|
|
| 554 |
schorsch |
1.4 |
static char *
|
| 555 |
|
|
findfile( /* find the file fname, return full path */
|
| 556 |
|
|
char *fname,
|
| 557 |
|
|
register char **pathlist
|
| 558 |
|
|
)
|
| 559 |
greg |
1.1 |
{
|
| 560 |
|
|
static char ffname[128];
|
| 561 |
|
|
register int fd;
|
| 562 |
|
|
|
| 563 |
|
|
if (fname[0] == '/')
|
| 564 |
|
|
return(fname);
|
| 565 |
|
|
|
| 566 |
|
|
while (*pathlist != NULL) {
|
| 567 |
|
|
strcpy(ffname, *pathlist);
|
| 568 |
|
|
strcat(ffname, fname);
|
| 569 |
|
|
if ((fd = open(ffname, 0)) != -1) {
|
| 570 |
|
|
close(fd);
|
| 571 |
|
|
return(ffname);
|
| 572 |
|
|
}
|
| 573 |
|
|
pathlist++;
|
| 574 |
|
|
}
|
| 575 |
|
|
return(NULL);
|
| 576 |
|
|
}
|
| 577 |
|
|
|
| 578 |
|
|
|
| 579 |
|
|
int
|
| 580 |
schorsch |
1.4 |
mgcurve( /* get a curve's (unmapped) values */
|
| 581 |
schorsch |
1.5 |
int c,
|
| 582 |
|
|
void (*f)(int c, double x, double y)
|
| 583 |
schorsch |
1.4 |
)
|
| 584 |
greg |
1.1 |
{
|
| 585 |
|
|
int nargs;
|
| 586 |
|
|
double x[2], step;
|
| 587 |
|
|
register VARIABLE *cv;
|
| 588 |
|
|
register float *p;
|
| 589 |
schorsch |
1.4 |
register int npts = 0;
|
| 590 |
greg |
1.1 |
|
| 591 |
|
|
if (c < 0 || c >= MAXCUR)
|
| 592 |
|
|
return(-1);
|
| 593 |
|
|
cv = cparam[c];
|
| 594 |
|
|
|
| 595 |
|
|
if (cv[C].flags & DEFINED) { /* function or map */
|
| 596 |
|
|
|
| 597 |
|
|
nargs = fundefined(cv[C].name);
|
| 598 |
|
|
if (nargs < 1 || nargs > 2) {
|
| 599 |
|
|
fprintf(stderr, "%s: bad # of arguments for '%c'\n",
|
| 600 |
|
|
progname, c+'A');
|
| 601 |
|
|
quit(1);
|
| 602 |
|
|
}
|
| 603 |
|
|
|
| 604 |
|
|
if (cv[CDATA].flags & DEFINED) { /* map */
|
| 605 |
|
|
npts = cv[CDATA].v.d.size / nargs;
|
| 606 |
|
|
p = cv[CDATA].v.d.data;
|
| 607 |
|
|
while (npts--) {
|
| 608 |
|
|
x[0] = *p++;
|
| 609 |
|
|
if (nargs == 2)
|
| 610 |
|
|
x[1] = *p++;
|
| 611 |
|
|
(*f)(c, x[0],
|
| 612 |
|
|
funvalue(cv[C].name, nargs, x));
|
| 613 |
|
|
}
|
| 614 |
|
|
npts = cv[CDATA].v.d.size / nargs;
|
| 615 |
|
|
} else if ( nargs == 1 && /* function */
|
| 616 |
|
|
gparam[XMIN].flags & DEFINED &&
|
| 617 |
|
|
gparam[XMAX].flags & DEFINED &&
|
| 618 |
|
|
cv[CNPOINTS].flags & DEFINED ) {
|
| 619 |
|
|
npts = varvalue(cv[CNPOINTS].name);
|
| 620 |
|
|
if (npts > 1)
|
| 621 |
|
|
step = (varvalue(gparam[XMAX].name) -
|
| 622 |
|
|
varvalue(gparam[XMIN].name)) /
|
| 623 |
|
|
(npts - 1);
|
| 624 |
|
|
else
|
| 625 |
|
|
step = 0.0;
|
| 626 |
|
|
for (x[0] = varvalue(gparam[XMIN].name);
|
| 627 |
|
|
npts--; x[0] += step)
|
| 628 |
|
|
(*f)(c, x[0],
|
| 629 |
|
|
funvalue(cv[C].name, 1, x));
|
| 630 |
|
|
npts = varvalue(cv[CNPOINTS].name);
|
| 631 |
|
|
} else {
|
| 632 |
|
|
fprintf(stderr,
|
| 633 |
|
|
"%s: function '%c' needs %cdata or xmin, xmax, %cnpoints\n",
|
| 634 |
|
|
progname, c+'A', c+'A', c+'A');
|
| 635 |
|
|
quit(1);
|
| 636 |
|
|
}
|
| 637 |
|
|
|
| 638 |
|
|
} else if (cv[CDATA].flags & DEFINED) { /* data */
|
| 639 |
|
|
|
| 640 |
|
|
npts = cv[CDATA].v.d.size / 2;
|
| 641 |
|
|
p = cv[CDATA].v.d.data;
|
| 642 |
|
|
while (npts--) {
|
| 643 |
|
|
(*f)(c, p[0], p[1]);
|
| 644 |
|
|
p += 2;
|
| 645 |
|
|
}
|
| 646 |
|
|
npts = cv[CDATA].v.d.size / 2;
|
| 647 |
|
|
|
| 648 |
|
|
} else
|
| 649 |
|
|
|
| 650 |
|
|
npts = 0;
|
| 651 |
|
|
|
| 652 |
|
|
return(npts);
|
| 653 |
|
|
}
|
