Context Navigation

source: Sophya/trunk/SophyaExt/XephemAstroLib/dbfmt.c@ 2928

Visit:

Last change on this file since 2928 was 2818, checked in by cmv, 20 years ago
Update de Xephem 3.7 cmv 21/08/2005
File size: 24.6 KB

Rev	Line
[1457]	1	/* code to convert between .edb format and an Obj */
	2
	3	#include <stdio.h>
	4	#include <ctype.h>
	5	#include <math.h>
	6	#include <stdlib.h>
	7	#include <string.h>
	8
	9	#include "astro.h"
	10	#include "preferences.h"
	11
	12
[2551]	13	int get_fields (char s, int delim, char fields[]);
[1457]	14
	15	#define MAXDBLINE 256 /* longest allowed db line */
	16
	17	#define FLDSEP ',' /* major field separator */
	18	#define SUBFLD '\|' /* subfield separator */
	19	#define MAXFLDS 20 /* must be more than on any expected line */
	20
[2551]	21	static char enm (char flds[MAXFLDS]);
	22	static int crack_f (Obj op, char flds[MAXFLDS], int nf, char whynot[]);
	23	static int crack_e (Obj op, char flds[MAXFLDS], int nf, char whynot[]);
	24	static int crack_h (Obj op, char flds[MAXFLDS], int nf, char whynot[]);
	25	static int crack_p (Obj op, char flds[MAXFLDS], int nf, char whynot[]);
	26	static int crack_E (Obj op, char flds[MAXFLDS], int nf, char whynot[]);
	27	static int crack_P (Obj op, char flds[MAXFLDS], int nf, char whynot[]);
	28	static int crack_B (Obj op, char flds[MAXFLDS], int nf, char whynot[]);
	29	static int crack_name (Obj op, char flds[MAXFLDS], int nf,
	30	char nm[][MAXNM], int nnm);
	31	static void crack_year (char bp, double p);
	32	static void crack_okdates (char fld, float startok, float *endok);
	33	static int get_okdates (char lp, float sp, float *ep);
	34	static int tle_sum (char *l);
	35	static double tle_fld (char *l, int from, int thru);
	36	static double tle_expfld (char *l, int start);
	37	static void write_f (Obj *op, char lp[]);
	38	static void write_e (Obj *op, char lp[]);
	39	static void write_h (Obj *op, char lp[]);
	40	static void write_p (Obj *op, char lp[]);
	41	static void write_E (Obj *op, char lp[]);
	42	static void write_P (Obj *op, char lp[]);
	43	static void write_B (Obj *op, char lp[]);
[1457]	44
	45	/* crack the given .edb database line into op.
	46	* if ok
[2551]	47	* return number of names in nm[], or 1 if nm == NULL
[1457]	48	* else
	49	* if whynot
	50	* if not even a candidate
	51	* set whynot[0] = '\0'
	52	* else
	53	* fill whynot with reason message.
	54	* return -1
[2551]	55	* only the first name is stored in op, all names (up to nnm) are in nm[], or
	56	* ignored if nm == NULL.
[1457]	57	*/
	58	int
[2551]	59	db_crack_line (char s[], Obj *op, char nm[][MAXNM], int nnm, char whynot[])
[1457]	60	{
[2551]	61	char copy[MAXDBLINE]; /* work copy; leave s untouched */
[1457]	62	char flds[MAXFLDS]; / point to each field for easy reference */
[2551]	63	int nf;
[1457]	64	int i;
	65
[2551]	66	/* init no response */
	67	if (whynot)
	68	whynot[0] = '\0';
	69
[1457]	70	/* basic initial check */
[2551]	71	if (dbline_candidate (s) < 0)
[1457]	72	return (-1);
	73
	74	/* do all the parsing on a copy */
	75	(void) strcpy (copy, s);
	76	i = strlen(copy);
	77	if (copy[i-1] == '\n')
	78	copy[i-1] = '\0';
	79
	80	/* parse into main fields */
	81	nf = get_fields (copy, FLDSEP, flds);
	82
	83	/* need at least 2: name and type */
	84	if (nf < 2) {
	85	if (whynot)
[2551]	86	sprintf (whynot, "Bogus: %s", s);
[1457]	87	return (-1);
	88	}
	89
	90	/* switch out on type of object - the second field */
	91	switch (flds[1][0]) {
[2551]	92
	93	case 'f':
	94	if (crack_f (op, flds, nf, whynot) < 0)
[1457]	95	return (-1);
[2551]	96	break;
	97
	98	case 'e':
	99	if (crack_e (op, flds, nf, whynot) < 0)
[1457]	100	return (-1);
	101	break;
	102
[2551]	103	case 'h':
	104	if (crack_h (op, flds, nf, whynot) < 0)
[1457]	105	return (-1);
	106	break;
	107
[2551]	108	case 'p':
	109	if (crack_p (op, flds, nf, whynot) < 0)
[1457]	110	return (-1);
	111	break;
	112
[2551]	113	case 'B':
	114	if (crack_B (op, flds, nf, whynot) < 0)
[1457]	115	return (-1);
	116	break;
	117
[2551]	118	case 'E':
	119	if (crack_E (op, flds, nf, whynot) < 0)
[1457]	120	return (-1);
	121	break;
	122
	123	case 'P':
[2551]	124	if (crack_P (op, flds, nf, whynot) < 0)
	125	return (-1);
	126	break;
[1457]	127
	128	default:
	129	if (whynot)
[2551]	130	sprintf (whynot, "%s: Unknown type %c for %s", enm(flds),
	131	flds[1][0], flds[0]);
[1457]	132	return (-1);
	133	}
	134
[2551]	135	return (crack_name (op, flds, nf, nm, nnm));
[1457]	136	}
	137
[2551]	138	/* write the given Obj in .edb format to lp[].
	139	* we do _not_ include a trailing '\n'.
	140	*/
	141	void
	142	db_write_line (Obj *op, char lp[])
[1457]	143	{
[2551]	144	int priorpref;
[1457]	145
[2551]	146	/* .edb format always uses MDY.
	147	* N.B. must restore old value before returning from here!
	148	*/
	149	priorpref = pref_set (PREF_DATE_FORMAT, PREF_MDY);
[1457]	150
[2551]	151	switch (op->o_type) {
	152	case FIXED:
	153	write_f (op, lp);
	154	break;
[1457]	155
[2551]	156	case BINARYSTAR:
	157	write_B (op, lp);
	158	break;
[1457]	159
[2551]	160	case ELLIPTICAL:
	161	write_e (op, lp);
	162	break;
[1457]	163
[2551]	164	case HYPERBOLIC:
	165	write_h (op, lp);
	166	break;
[1457]	167
[2551]	168	case PARABOLIC:
	169	write_p (op, lp);
	170	break;
	171
	172	case EARTHSAT:
	173	write_E (op, lp);
	174	break;
	175
	176	case PLANET:
	177	write_P (op, lp);
	178	break;
	179
	180	default:
	181	printf ("Unknown type for %s: %d\n", op->o_name, op->o_type);
	182	abort();
	183	}
	184
	185	/* restore date format preference */
	186	(void) pref_set (PREF_DATE_FORMAT, priorpref);
[1457]	187	}
	188
	189	/* given 3 lines, first of which is name and next 2 are TLE, fill op.
	190	* we skip leading whitespace on all lines.
	191	* we do /not/ assume the 2 TLE lines are 0 terminated, but we do reach out into
	192	* each as far as 69 chars.
	193	* we detect nonconformance as efficiently as possible.
	194	* name ends at first '\0', '\r' or '\n'.
	195	* if ok return 0 else return -1
	196	*/
	197	int
[2551]	198	db_tle (char name, char l1, char l2, Obj op)
[1457]	199	{
	200	double ep;
	201	int i;
	202
	203	/* check for correct line numbers, macthing satellite numbers and
	204	* correct checksums.
	205	*/
	206	while (isspace(*l1))
	207	l1++;
	208	if (*l1 != '1')
	209	return (-1);
	210	while (isspace(*l2))
	211	l2++;
	212	if (*l2 != '2')
	213	return (-1);
	214	if (strncmp (l1+2, l2+2, 5))
	215	return (-1);
	216	if (tle_sum (l1) < 0)
	217	return (-1);
	218	if (tle_sum (l2) < 0)
	219	return (-1);
	220
	221	/* assume it's ok from here out */
	222
	223	/* fresh */
	224	zero_mem ((void *)op, sizeof(ObjES));
	225	op->o_type = EARTHSAT;
	226
	227	/* name, sans leading and trailing whitespace */
	228	while (isspace(*name))
	229	name++;
	230	i = strcspn (name, "\r\n");
	231	while (i > 0 && name[i-1] == ' ')
	232	--i;
	233	if (i == 0)
	234	return (-1);
	235	if (i > MAXNM-1)
	236	i = MAXNM-1;
	237	sprintf (op->o_name, "%.*s", i, name);
	238
	239	/* goodies from "line 1" */
	240	op->es_drag = (float) tle_expfld (l1, 54);
[2551]	241	op->es_decay = (float) tle_fld (l1, 34, 43);
[1457]	242	i = (int) tle_fld (l1, 19, 20);
	243	if (i < 57)
	244	i += 100;
	245	cal_mjd (1, tle_fld(l1, 21, 32), i+1900, &ep);
	246	op->es_epoch = ep;
	247
	248	/* goodies from "line 2" */
	249	op->es_n = tle_fld (l2, 53, 63);
	250	op->es_inc = (float)tle_fld (l2, 9, 16);
	251	op->es_raan = (float)tle_fld (l2, 18, 25);
	252	op->es_e = (float)(tle_fld (l2, 27, 33) * 1e-7);
	253	op->es_ap = (float)tle_fld (l2, 35, 42);
	254	op->es_M = (float)tle_fld (l2, 44, 51);
	255	op->es_orbit = (int)tle_fld (l2, 64, 68);
	256
	257	/* yes! */
	258	return (0);
	259	}
	260
[2551]	261	/* return 0 if op has no date range information or what it does have brackets
	262	* now, else -1
[1457]	263	*/
[2551]	264	int
	265	dateRangeOK (Now np, Obj op)
[1457]	266	{
[2551]	267	float sp, ep;
[1457]	268
	269	switch (op->o_type) {
[2551]	270	case ELLIPTICAL:
	271	sp = &op->e_startok;
	272	ep = &op->e_endok;
[1457]	273	break;
[2551]	274	case HYPERBOLIC:
	275	sp = &op->h_startok;
	276	ep = &op->h_endok;
	277	break;
	278	case PARABOLIC:
	279	sp = &op->p_startok;
	280	ep = &op->p_endok;
	281	break;
	282	case EARTHSAT:
	283	sp = &op->es_startok;
	284	ep = &op->es_endok;
	285	break;
	286	default:
	287	return (0);
	288	}
[1457]	289
[2551]	290	if (sp <= mjd && (!ep \|\| mjd <= *ep))
	291	return (0);
	292	return (-1);
	293	}
[1457]	294
[2551]	295	/* given a null-terminated string, fill in fields[] with the starting addresses
	296	* of each field delimited by delim or '\0'.
	297	* N.B. each character matching delim is REPLACED BY '\0' IN PLACE.
	298	* N.B. 0-length fields count, so even if *s=='\0' we return 1.
	299	* return the number of fields.
	300	*/
	301	int
	302	get_fields (char s, int delim, char fields[])
	303	{
	304	int n;
	305	char c;
[1457]	306
[2551]	307	*fields = s;
	308	n = 0;
	309	do {
	310	c = *s++;
	311	if (c == delim \|\| c == '\0') {
	312	s[-1] = '\0';
	313	*++fields = s;
	314	n++;
[1457]	315	}
[2551]	316	} while (c);
[1457]	317
[2551]	318	return (n);
	319	}
[1457]	320
[2551]	321	/* return 0 if buf qualifies as a database line worthy of a cracking
	322	* attempt, else -1.
	323	*/
	324	int
	325	dbline_candidate (char *buf)
	326	{
	327	char c = buf[0];
[1457]	328
[2551]	329	return (c == '#' \|\| c == '!' \|\| isspace(c) ? -1 : 0);
	330	}
[1457]	331
[2551]	332	/* return 0 if TLE checksum is ok, else -1 */
	333	static int
	334	tle_sum (char *l)
	335	{
	336	char *lastl = l + 68;
	337	int sum;
[1457]	338
[2551]	339	for (sum = 0; l < lastl; ) {
	340	char c = *l++;
	341	if (c == '\0')
	342	return (-1);
	343	if (isdigit(c))
	344	sum += c - '0';
	345	else if (c == '-')
	346	sum++;
[1457]	347	}
	348
[2551]	349	return (*l - '0' == (sum%10) ? 0 : -1);
[1457]	350	}
	351
[2551]	352	/* extract the given columns and return value.
	353	* N.B. from and to are 1-based within l
[1457]	354	*/
[2551]	355	static double
	356	tle_fld (char *l, int from, int thru)
[1457]	357	{
[2551]	358	char buf[32];
	359
	360	sprintf (buf, "%.*s", thru-from+1, l+from-1);
	361	return (atod (buf));
	362	}
	363
	364	/* extract the exponential value starting at the given column.
	365	* N.B. start is 1-based within l
	366	*/
	367	static double
	368	tle_expfld (char *l, int start)
	369	{
	370	char buf[32];
	371	double v;
	372
	373	sprintf (buf, ".%.*s", 5, l+start);
	374	v = atod (buf) * pow (10.0, tle_fld(l, start+6, start+7));
	375	if (l[start-1] == '-')
	376	v = -v;
	377	return (v);
	378	}
	379
	380	static int
	381	crack_f (Obj op, char flds[MAXFLDS], int nf, char whynot[])
	382	{
	383	char *sflds[MAXFLDS];
[1457]	384	double tmp;
[2551]	385	int nsf;
[1457]	386
[2551]	387	if (nf < 5 \|\| nf > 7) {
	388	if (whynot)
[2653]	389	sprintf (whynot, "%s: type f needs 5-7 fields, not %d",
	390	enm(flds),nf);
[2551]	391	return (-1);
	392	}
[1457]	393
[2551]	394	zero_mem ((void *)op, sizeof(ObjF));
	395	op->o_type = FIXED;
	396
	397	nsf = get_fields(flds[1], SUBFLD, sflds);
	398	if (nsf > 1) {
	399	switch (sflds[1][0]) {
[1457]	400	case 'A': case 'B': case 'C': case 'D': case 'F': case 'G':
	401	case 'H': case 'K': case 'J': case 'L': case 'M': case 'N':
	402	case 'O': case 'P': case 'Q': case 'R': case 'S': case 'T':
[2551]	403	case 'U': case 'V': case 'Y':
	404	op->f_class = sflds[1][0];
	405	if (op->f_class == 'B')
	406	op->f_class = 'D'; /* merge B and D since BINARYSTAR */
[1457]	407	break;
	408	default:
[2551]	409	if (whynot)
	410	sprintf (whynot, "%s: Bad f class: %c", enm(flds),
	411	sflds[1][0]);
[1457]	412	return (-1);
	413	}
[2653]	414	} else
	415	op->f_class = 'T'; /* default to star-like */
[2551]	416	if (nsf > 2) {
[1457]	417	/* fill f_spect all the way */
[2551]	418	char buf[sizeof(op->f_spect)+1];
	419	memset (buf, 0, sizeof(buf));
	420	sprintf (buf, "%.*s", (int)sizeof(op->f_spect), sflds[2]);
	421	memcpy (op->f_spect, buf, (int)sizeof(op->f_spect));
[1457]	422	}
	423
[2551]	424	nsf = get_fields(flds[2], SUBFLD, sflds);
	425	f_scansexa (sflds[0], &tmp);
	426	op->f_RA = (float) hrrad(tmp);
	427	if (nsf > 1)
	428	op->f_pmRA = (float) 1.327e-11atod(sflds[1]);/mas/yr->rad/dy*/
	429
	430	nsf = get_fields(flds[3], SUBFLD, sflds);
	431	f_scansexa (sflds[0], &tmp);
	432	op->f_dec = (float) degrad(tmp);
	433	if (nsf > 1)
	434	op->f_pmdec = (float)1.327e-11atod(sflds[1]);/mas/yr->rad/dy*/
	435	if (fabs(op->f_dec) < PI/2)
	436	op->f_pmRA /= cos (op->f_dec);
	437
	438	set_fmag (op, atod(flds[4]));
	439
	440	if (nf > 5 && flds[5][0]) {
	441	tmp = op->f_epoch;
	442	crack_year (flds[5], &tmp);
	443	op->f_epoch = (float) tmp;
	444	} else
	445	op->f_epoch = J2000; /* default */
	446
	447	if (nf > 6) {
	448	op->f_size = (float) atod(flds[6]);
	449
	450	/* optional minor axis and position angle subfields */
	451	nsf = get_fields(flds[6], SUBFLD, sflds);
	452	if (nsf == 3) {
	453	set_ratio(op, op->s_size, atod(sflds[1]));
	454	set_pa(op,degrad(atod(sflds[2])));
	455	} else {
	456	set_ratio(op,1,1); /* round */
	457	set_pa(op,0.0);
[1457]	458	}
[2551]	459	}
[1457]	460
[2551]	461	return (0);
	462	}
[1457]	463
[2551]	464	static int
	465	crack_e (Obj op, char flds[MAXFLDS], int nf, char whynot[])
	466	{
	467	if (nf != 13 && nf != 14) {
	468	if (whynot)
[2653]	469	sprintf (whynot, "%s: type e needs 13 or 14 fields, not %d",
[2551]	470	enm(flds), nf);
	471	return (-1);
	472	}
[1457]	473
[2551]	474	zero_mem ((void *)op, sizeof(ObjE));
	475	op->o_type = ELLIPTICAL;
[1457]	476
[2551]	477	op->e_inc = (float) atod (flds[2]);
	478	op->e_Om = (float) atod (flds[3]);
	479	op->e_om = (float) atod (flds[4]);
	480	op->e_a = (float) atod (flds[5]);
	481	/* retired op->e_n = (float) atod (flds[6]); */
	482	op->e_e = atod (flds[7]);
	483	op->e_M = (float) atod (flds[8]);
	484	crack_year (flds[9], &op->e_cepoch);
	485	crack_okdates (flds[9], &op->e_startok, &op->e_endok);
	486	crack_year (flds[10], &op->e_epoch);
	487
	488	/* magnitude model gk or HG(default). allow prefixes in either field */
	489	op->e_mag.whichm = flds[11][0] == 'g' ? MAG_gk : MAG_HG;
	490	if (isdigit(flds[11][0]))
	491	op->e_mag.m1 = (float) atod(&flds[11][0]);
	492	else
	493	op->e_mag.m1 = (float) atod(&flds[11][1]);
	494	if (isdigit(flds[12][0]))
	495	op->e_mag.m2 = (float) atod(&flds[12][0]);
	496	else
	497	op->e_mag.m2 = (float) atod(&flds[12][1]);
	498
	499	if (nf == 14)
	500	op->e_size = (float) atod (flds[13]);
	501
	502	return (0);
	503	}
	504
	505	static int
	506	crack_h (Obj op, char flds[MAXFLDS], int nf, char whynot[])
	507	{
	508	if (nf != 11 && nf != 12) {
	509	if (whynot)
[2653]	510	sprintf (whynot, "%s: type h needs 11 or 12 fields, not %d",
[2551]	511	enm(flds), nf);
	512	return (-1);
[1457]	513	}
	514
[2551]	515	zero_mem ((void *)op, sizeof(ObjH));
	516	op->o_type = HYPERBOLIC;
	517
	518	crack_year (flds[2], &op->h_ep);
	519	crack_okdates (flds[2], &op->h_startok, &op->h_endok);
	520	op->h_inc = (float) atod (flds[3]);
	521	op->h_Om = (float) atod (flds[4]);
	522	op->h_om = (float) atod (flds[5]);
	523	op->h_e = (float) atod (flds[6]);
	524	op->h_qp = (float) atod (flds[7]);
	525	crack_year (flds[8], &op->h_epoch);
	526	op->h_g = (float) atod (flds[9]);
	527	op->h_k = (float) atod (flds[10]);
	528
	529	if (nf == 12)
	530	op->h_size = (float) atod (flds[11]);
	531
[1457]	532	return (0);
	533	}
	534
[2551]	535	static int
	536	crack_p (Obj op, char flds[MAXFLDS], int nf, char whynot[])
[1457]	537	{
[2551]	538	if (nf != 10 && nf != 11) {
	539	if (whynot)
[2653]	540	sprintf (whynot, "%s: type p needs 10 or 11 fields, not %d",
[2551]	541	enm(flds), nf);
	542	return (-1);
	543	}
[1457]	544
[2551]	545	zero_mem ((void *)op, sizeof(ObjP));
	546	op->o_type = PARABOLIC;
[1457]	547
[2551]	548	crack_year (flds[2], &op->p_ep);
	549	crack_okdates (flds[2], &op->p_startok, &op->p_endok);
	550	op->p_inc = (float) atod (flds[3]);
	551	op->p_om = (float) atod (flds[4]);
	552	op->p_qp = (float) atod (flds[5]);
	553	op->p_Om = (float) atod (flds[6]);
	554	crack_year (flds[7], &op->p_epoch);
	555	op->p_g = (float) atod (flds[8]);
	556	op->p_k = (float) atod (flds[9]);
	557
	558	if (nf == 11)
	559	op->p_size = (float) atod (flds[10]);
	560
	561	return (0);
[1457]	562	}
	563
[2551]	564	static int
	565	crack_E (Obj op, char flds[MAXFLDS], int nf, char whynot[])
[1457]	566	{
[2551]	567	if (nf != 11 && nf != 12) {
	568	if (whynot)
[2653]	569	sprintf (whynot, "%s: type E needs 11 or 12 fields, not %d",
[2551]	570	enm(flds), nf);
	571	return (-1);
	572	}
	573
	574	zero_mem ((void *)op, sizeof(ObjES));
	575	op->o_type = EARTHSAT;
	576	crack_year (flds[2], &op->es_epoch);
	577	crack_okdates (flds[2], &op->es_startok, &op->es_endok);
	578	op->es_inc = (float) atod (flds[3]);
	579	op->es_raan = (float) atod (flds[4]);
	580	op->es_e = (float) atod (flds[5]);
	581	op->es_ap = (float) atod (flds[6]);
	582	op->es_M = (float) atod (flds[7]);
	583	op->es_n = atod (flds[8]);
	584	op->es_decay = (float) atod (flds[9]);
	585	op->es_orbit = atoi (flds[10]);
	586	if (nf == 12)
	587	op->es_drag = (float) atod (flds[11]);
	588
	589	return (0);
	590	}
	591
	592	static int
	593	crack_P (Obj op, char flds[MAXFLDS], int nf, char whynot[])
	594	{
	595	Obj *bi;
	596	int nbi;
[1457]	597	int i;
	598
[2551]	599	nbi = getBuiltInObjs (&bi);
[1457]	600
[2551]	601	for (i = 0; i < nbi; i++) {
	602	Obj *bop = bi + i;
	603	if (is_type(bop,PLANETM) && !strcmp (flds[0], bop->o_name)) {
	604	memcpy ((void *)op, bop, sizeof(ObjPl));
[1457]	605	return (0);
	606	}
	607	}
	608
[2551]	609	if (whynot)
	610	sprintf (whynot, "%s: Unknown planet or moon", enm(flds));
[1457]	611	return (-1);
	612	}
	613
	614	static int
[2551]	615	crack_B (Obj op, char flds[MAXFLDS], int nf, char whynot[])
[1457]	616	{
[2551]	617	char *sflds[MAXFLDS];
	618	double tmp;
	619	int nsf;
[1457]	620
[2551]	621	if (nf != 7) {
	622	if (whynot)
	623	sprintf (whynot, "%s: B need 7 fields, not %d", enm(flds), nf);
	624	return (-1);
	625	}
	626
	627	zero_mem ((void *)op, sizeof(ObjB));
	628	op->o_type = BINARYSTAR;
	629
	630	nsf = get_fields(flds[1], SUBFLD, sflds);
	631	if (nsf > 1) {
	632	switch (sflds[1][0]) {
	633	case 'a': case 'c': case 'e': case 'x': case 'y': case 'o':
	634	case 's': case 't': case 'u': case 'v': case 'b': case 'd':
	635	case 'q': case 'r': case 'p': case 'U': case 'V': case 'Y':
	636	op->f_class = sflds[1][0];
	637	break;
	638	default:
	639	if (whynot)
	640	sprintf (whynot, "%s: Bad B class: %c", enm(flds),
	641	sflds[1][0]);
	642	return (-1);
	643	}
	644	}
	645	if (nsf > 2) {
	646	/* fill f_spect all the way */
	647	char buf[sizeof(op->f_spect)+1];
	648	memset (buf, 0, sizeof(buf));
	649	sprintf (buf, "%.*s", (int)sizeof(op->f_spect), sflds[2]);
	650	memcpy (op->f_spect, buf, (int)sizeof(op->f_spect));
	651	}
	652	if (nsf > 3) {
	653	/* fill b_2spect all the way */
	654	char buf[sizeof(op->b_2spect)+1];
	655	memset (buf, 0, sizeof(buf));
	656	sprintf (buf, "%.*s", (int)sizeof(op->b_2spect), sflds[3]);
	657	memcpy (op->b_2spect, buf, (int)sizeof(op->b_2spect));
	658	}
	659
	660	nsf = get_fields(flds[2], SUBFLD, sflds);
	661	f_scansexa (sflds[0], &tmp);
	662	op->f_RA = (float) hrrad(tmp);
	663	if (nsf > 1)
	664	op->f_pmRA = (float) 1.327e-11atod(sflds[1]);/mas/yr->rad/dy*/
	665
	666	nsf = get_fields(flds[3], SUBFLD, sflds);
	667	f_scansexa (sflds[0], &tmp);
	668	op->f_dec = (float) degrad(tmp);
	669	if (nsf > 1)
	670	op->f_pmdec = (float)1.327e-11atod(sflds[1]);/mas/yr->rad/dy*/
	671	if (fabs(op->f_dec) < PI/2)
	672	op->f_pmRA /= cos (op->f_dec);
	673
	674	nsf = get_fields(flds[4], SUBFLD, sflds);
	675	if (nsf > 0)
	676	set_fmag (op, atod(sflds[0]));
	677	if (nsf > 1)
	678	op->b_2mag = (short)floor((atod(sflds[1]))*MAGSCALE + 0.5);
	679
	680	if (flds[5][0]) {
	681	tmp = op->f_epoch;
	682	crack_year (flds[5], &tmp);
	683	op->f_epoch = (float) tmp;
	684	} else
	685	op->f_epoch = J2000; /* default */
	686
	687	nsf = get_fields(flds[6], SUBFLD, sflds);
	688	if (nsf == 7) {
	689	int l;
	690	char c;
	691
	692	op->b_bo.bo_a = atod(sflds[0]);
	693	op->b_bo.bo_i = atod(sflds[1]);
	694	op->b_bo.bo_O = atod(sflds[2]);
	695	op->b_bo.bo_e = atod(sflds[3]);
	696	op->b_bo.bo_T = atod(sflds[4]);
	697	op->b_bo.bo_o = atod(sflds[5]);
	698	op->b_bo.bo_P = atod(sflds[6]);
	699
	700	/* reject some weird entries actually seen in real lists */
	701	if (op->b_bo.bo_a <= 0) {
	702	if (whynot)
	703	sprintf (whynot, "%s: Bogus B semi major axis: %g",
	704	enm(flds), op->b_bo.bo_a);
	705	return (-1);
	706	}
	707	if (op->b_bo.bo_P <= 0) {
	708	if (whynot)
	709	sprintf (whynot, "%s: Bogus B period: %g", enm(flds),
	710	op->b_bo.bo_P);
	711	return (-1);
	712	}
	713
	714	/* scale period */
	715	l = strlen (sflds[6]);
	716	c = sflds[6][l-1];
	717	switch (c) {
	718	case 'y': case 'Y':
	719	break;
	720	case 'h': case 'H':
	721	op->b_bo.bo_P /= (24.0*365.25);
	722	break;
	723	case 'd': case 'D':
	724	op->b_bo.bo_P /= 365.25;
	725	break;
	726	default:
	727	if (c != ' ' && !isdigit(c)) {
	728	if (whynot)
	729	sprintf (whynot,"%s: B period suffix not Y, D or H: %c",
	730	enm(flds), c);
	731	return (-1);
	732	}
	733	}
	734
	735	} else if (nsf==3 \|\| nsf==6 \|\| nsf==9) {
	736	double yr;
	737	int i;
	738
	739	op->b_nbp = nsf/3;
	740	for (i = 0; i < nsf; i += 3) {
	741	tmp = 0;
	742	crack_year (sflds[i+0], &tmp);
	743	mjd_year (tmp, &yr);
	744	op->b_bp[i/3].bp_ep = (float)yr;
	745	op->b_bp[i/3].bp_sep = atod(sflds[i+1]);
	746	op->b_bp[i/3].bp_pa = degrad(atod(sflds[i+2]));
	747	}
	748	} else {
	749	if (whynot)
	750	sprintf (whynot,
[2653]	751	"%s: type B needs 3,6 or 7 subfields in field 7, not %d",
[2551]	752	enm(flds), nsf);
	753	return (-1);
	754	}
	755
	756	return (0);
[1457]	757	}
	758
[2551]	759	/* put all names in nm but load only the first into o_name */
	760	static int
	761	crack_name (Obj op, char flds[MAXFLDS], int nf, char nm[][MAXNM], int nnm)
	762	{
	763	char *sflds[MAXFLDS];
	764	int nsf;
	765	int i;
	766
	767	nsf = get_fields (flds[0], SUBFLD, sflds);
	768	for (i = 0; nm && i < nsf && i < nnm; i++) {
	769	strncpy (nm[i], sflds[i], MAXNM);
	770	nm[i][MAXNM-1] = '\0';
	771	}
	772	strncpy (op->o_name, sflds[0], MAXNM-1);
	773	return (nsf);
	774	}
	775
	776	/* simple name cracker just for error messages */
	777	static char *
	778	enm (char *flds[MAXFLDS])
	779	{
	780	char *sflds[MAXFLDS];
	781	int nsf = get_fields (flds[0], SUBFLD, sflds);
	782	return (nsf > 0 ? sflds[0] : "Unknown");
	783	}
	784
	785	/* given either a decimal year (xxxx[.xxx]) or a calendar (x/x/x) date
	786	* convert it to an mjd and store it at *p.
[1457]	787	*/
	788	static void
[2551]	789	crack_year (char bp, double p)
[1457]	790	{
	791	int m, y;
	792	double d;
	793
	794	mjd_cal (p, &m, &d, &y); / init with current */
[2551]	795	f_sscandate (bp, PREF_MDY, &m, &d, &y);
[1457]	796	cal_mjd (m, d, y, p);
	797	}
	798
[2551]	799	/* crack the startok and endok date fields found in several Obj types.
	800	* set to 0 if blank or any problems.
[1457]	801	*/
[2551]	802	static void
	803	crack_okdates (char fld, float startok, float *endok)
[1457]	804	{
[2551]	805	char *sflds[MAXFLDS];
[1457]	806	double tmp;
[2551]	807	int m, y;
	808	double d;
	809	int nsf;
[1457]	810
[2551]	811	startok = endok = 0;
	812	nsf = get_fields(fld, SUBFLD, sflds);
	813	if (nsf > 1) {
	814	d = m = y = 0;
	815	f_sscandate (sflds[1], PREF_MDY, &m, &d, &y);
	816	cal_mjd (m, d, y, &tmp);
	817	*startok = (float)tmp;
	818	if (nsf > 2) {
	819	d = m = y = 0;
	820	f_sscandate (sflds[2], PREF_MDY, &m, &d, &y);
	821	cal_mjd (m, d, y, &tmp);
	822	*endok = (float)tmp;
[1457]	823	}
[2551]	824	}
	825	}
[1457]	826
[2551]	827	/* add startok and endok to string at lp if non-zero.
	828	* return number of characters added.
	829	*/
	830	static int
	831	get_okdates (char lp, float sp, float *ep)
	832	{
	833	char *lp0 = lp;
	834
	835	if (sp \|\| ep) {
	836	*lp++ = '\|';
	837	if (*sp)
	838	lp += fs_date (lp, *sp);
	839	if (*ep) {
	840	*lp++ = '\|';
	841	lp += fs_date (lp, *ep);
[1457]	842	}
[2551]	843	}
[1457]	844
[2551]	845	return (lp - lp0);
	846	}
[1457]	847
[2551]	848	static void
	849	write_f (Obj *op, char lp[])
	850	{
	851	double tmp;
[1457]	852
[2551]	853	lp += sprintf (lp, "%s,f", op->o_name);
	854	if (op->f_class)
	855	lp += sprintf (lp, "\|%c", op->f_class);
	856	if (op->f_spect[0])
	857	lp += sprintf (lp, "\|%.*s", (int)sizeof(op->f_spect), op->f_spect);
	858	*lp++ = ',';
	859	lp += fs_sexa (lp, radhr(op->f_RA), 2, 36000);
	860	if (op->f_pmRA)
	861	lp += sprintf (lp, "\|%.6g",cos(op->f_dec)*op->f_pmRA/1.327e-11);
	862	*lp++ = ',';
	863	lp += fs_sexa (lp, raddeg(op->f_dec), 3, 3600);
	864	if (op->f_pmdec)
	865	lp += sprintf (lp, "\|%.6g", op->f_pmdec/1.327e-11);
	866	lp += sprintf (lp, ",%.2f", get_mag(op));
	867	mjd_year (op->f_epoch, &tmp);
	868	lp += sprintf (lp, ",%.6g", tmp); /* %.7g gives 2000.001 */
	869	lp += sprintf (lp, ",%.7g", op->f_size);
	870	if (op->f_size && (op->f_ratio \|\| op->f_pa))
	871	lp += sprintf (lp,"\|%g\|%g", op->f_size*get_ratio(op),
	872	raddeg(get_pa(op)));
	873	}
[1457]	874
[2551]	875	static void
	876	write_e (Obj *op, char lp[])
	877	{
	878	lp += sprintf (lp, "%s,e", op->o_name);
	879	lp += sprintf (lp, ",%.7g", op->e_inc);
	880	lp += sprintf (lp, ",%.7g", op->e_Om);
	881	lp += sprintf (lp, ",%.7g", op->e_om);
	882	lp += sprintf (lp, ",%.7g", op->e_a);
	883	lp += sprintf (lp, ",%.7g", 0.0); /* retired op->e_n */
	884	lp += sprintf (lp, ",%.7g", op->e_e);
	885	lp += sprintf (lp, ",%.7g", op->e_M);
	886	*lp++ = ',';
	887	lp += fs_date (lp, op->e_cepoch);
	888	lp += get_okdates (lp, &op->e_startok, &op->e_endok);
	889	*lp++ = ',';
	890	lp += fs_date (lp, op->e_epoch);
	891	if (op->e_mag.whichm == MAG_gk)
	892	lp += sprintf (lp, ",g%.7g", op->e_mag.m1);
	893	else if (op->e_mag.whichm == MAG_HG)
	894	lp += sprintf (lp, ",H%.7g", op->e_mag.m1);
	895	else
	896	lp += sprintf (lp, ",%.7g", op->e_mag.m1);
	897	lp += sprintf (lp, ",%.7g", op->e_mag.m2);
	898	lp += sprintf (lp, ",%.7g", op->e_size);
	899	}
	900
	901	static void
	902	write_h (Obj *op, char lp[])
	903	{
	904	lp += sprintf (lp, "%s,h", op->o_name);
	905	*lp++ = ',';
	906	lp += fs_date (lp, op->h_ep);
	907	lp += get_okdates (lp, &op->h_startok, &op->h_endok);
	908	lp += sprintf (lp, ",%.7g", op->h_inc);
	909	lp += sprintf (lp, ",%.7g", op->h_Om);
	910	lp += sprintf (lp, ",%.7g", op->h_om);
	911	lp += sprintf (lp, ",%.7g", op->h_e);
	912	lp += sprintf (lp, ",%.7g", op->h_qp);
	913	*lp++ = ',';
	914	lp += fs_date (lp, op->h_epoch);
	915	lp += sprintf (lp, ",%.7g", op->h_g);
	916	lp += sprintf (lp, ",%.7g", op->h_k);
	917	lp += sprintf (lp, ",%.7g", op->h_size);
	918	}
	919
	920	static void
	921	write_p (Obj *op, char lp[])
	922	{
	923	lp += sprintf (lp, "%s,p", op->o_name);
	924	*lp++ = ',';
	925	lp += fs_date (lp, op->p_ep);
	926	lp += get_okdates (lp, &op->p_startok, &op->p_endok);
	927	lp += sprintf (lp, ",%.7g", op->p_inc);
	928	lp += sprintf (lp, ",%.7g", op->p_om);
	929	lp += sprintf (lp, ",%.7g", op->p_qp);
	930	lp += sprintf (lp, ",%.7g", op->p_Om);
	931	*lp++ = ',';
	932	lp += fs_date (lp, op->p_epoch);
	933	lp += sprintf (lp, ",%.7g", op->p_g);
	934	lp += sprintf (lp, ",%.7g", op->p_k);
	935	lp += sprintf (lp, ",%.7g", op->p_size);
	936	}
	937
	938	static void
	939	write_E (Obj *op, char lp[])
	940	{
	941	lp += sprintf (lp, "%s,E", op->o_name);
	942	*lp++ = ',';
	943	lp += fs_date (lp, op->es_epoch);
	944	lp += get_okdates (lp, &op->es_startok, &op->es_endok);
	945	lp += sprintf (lp, ",%.7g", op->es_inc);
	946	lp += sprintf (lp, ",%.7g", op->es_raan);
	947	lp += sprintf (lp, ",%.7g", op->es_e);
	948	lp += sprintf (lp, ",%.7g", op->es_ap);
	949	lp += sprintf (lp, ",%.7g", op->es_M);
	950	lp += sprintf (lp, ",%.7g", op->es_n);
	951	lp += sprintf (lp, ",%.7g", op->es_decay);
	952	lp += sprintf (lp, ",%d", op->es_orbit);
	953	lp += sprintf (lp, ",%.7g", op->es_drag);
	954	}
	955
	956	static void
	957	write_B (Obj *op, char lp[])
	958	{
	959	double tmp;
	960
	961	lp += sprintf (lp, "%s,B", op->o_name);
	962	if (op->f_class)
	963	lp += sprintf (lp, "\|%c", op->f_class);
	964	if (op->f_spect[0])
	965	lp += sprintf (lp, "\|%.*s", (int)sizeof(op->f_spect), op->f_spect);
	966	if (op->b_2spect[0])
	967	lp += sprintf (lp, "\|%.*s", (int)sizeof(op->b_2spect),op->b_2spect);
	968	*lp++ = ',';
	969	lp += fs_sexa (lp, radhr(op->f_RA), 2, 36000);
	970	if (op->f_pmRA)
	971	lp += sprintf (lp, "\|%.6g",cos(op->f_dec)*op->f_pmRA/1.327e-11);
	972	*lp++ = ',';
	973	lp += fs_sexa (lp, raddeg(op->f_dec), 3, 3600);
	974	if (op->f_pmdec)
	975	lp += sprintf (lp, "\|%.6g", op->f_pmdec/1.327e-11);
	976	lp += sprintf (lp, ",%.2f", get_mag(op));
	977	lp += sprintf (lp, "\|%.2f", op->b_2mag/MAGSCALE);
	978	mjd_year (op->f_epoch, &tmp);
	979	lp += sprintf (lp, ",%.6g", tmp); /* %.7g gives 2000.001 */
	980	if (op->b_nbp == 0) {
	981	lp += sprintf (lp, ",%.6g", op->b_bo.bo_a);
	982	lp += sprintf (lp, "\|%.6g", op->b_bo.bo_i);
	983	lp += sprintf (lp, "\|%.6g", op->b_bo.bo_O);
	984	lp += sprintf (lp, "\|%.6g", op->b_bo.bo_e);
	985	lp += sprintf (lp, "\|%.6g", op->b_bo.bo_T);
	986	lp += sprintf (lp, "\|%.6g", op->b_bo.bo_o);
	987	lp += sprintf (lp, "\|%.6gy", op->b_bo.bo_P);
	988	} else {
	989	int i;
	990
	991	for (i = 0; i < op->b_nbp; i++) {
	992	BinPos *bp = &op->b_bp[i];
	993	lp += sprintf (lp, "%c%.6g", i==0?',':'\|', bp->bp_ep);
	994	lp += sprintf (lp, "\|%.6g", bp->bp_sep);
	995	lp += sprintf (lp, "\|%.6g", raddeg(bp->bp_pa));
	996	}
[1457]	997	}
[2551]	998	}
[1457]	999
[2551]	1000	static void
	1001	write_P (Obj *op, char lp[])
	1002	{
	1003
	1004	lp += sprintf (lp, "%s,P", op->o_name);
[1457]	1005	}
	1006
	1007	/* For RCS Only -- Do Not Edit */
[2818]	1008	static char rcsid[2] = {(char )rcsid, "@(#) $RCSfile: dbfmt.c,v $ $Date: 2005-08-21 10:02:37 $ $Revision: 1.6 $ $Name: not supported by cvs2svn $"};

Note: See TracBrowser for help on using the repository browser.

Download in other formats: