ref: bf645afaac246967b9590ae7463f243c11d97480
dir: /sys/src/cmd/scat/scat.c/
#include <u.h>
#include <libc.h>
#include <bio.h>
#include <draw.h>
#include <event.h>
#include "sky.h"
#include "strings.c"
enum
{
NNGC=7840, /* number of NGC numbers [1..NNGC] */
NIC = 5386, /* number of IC numbers */
NNGCrec=NNGC+NIC, /* number of records in the NGC catalog (including IC's, starting at NNGC */
NMrec=122, /* number of M records */
NM=110, /* number of M numbers */
NAbell=2712, /* number of records in the Abell catalog */
NName=1000, /* number of prose names; estimated maximum (read from editable text file) */
NBayer=1517, /* number of bayer entries */
NSAO=258998, /* number of SAO stars */
MAXcon=1932, /* maximum number of patches in a constellation */
Ncon=88, /* number of constellations */
Npatch=92053, /* highest patch number */
};
char ngctype[NNGCrec];
Mindexrec mindex[NMrec];
Namerec name[NName];
Bayerec bayer[NBayer];
long con[MAXcon];
ushort conindex[Ncon+1];
long patchaddr[Npatch+1];
Record *rec;
Record *orec;
Record *cur;
char *dir=DIR;
int saodb;
int ngcdb;
int abelldb;
int ngctypedb;
int mindexdb;
int namedb;
int bayerdb;
int condb;
int conindexdb;
int patchdb;
char parsed[3];
long nrec;
long nreca;
long norec;
long noreca;
Biobuf bin;
Biobuf bout;
main(int argc, char *argv[])
{
char *line;
Binit(&bin, 0, OREAD);
Binit(&bout, 1, OWRITE);
if(argc != 1)
dir = argv[1];
astro("", 1);
while(line = Brdline(&bin, '\n')){
line[Blinelen(&bin)-1] = 0;
lookup(line, 1);
Bflush(&bout);
}
if(display != nil){
closedisplay(display);
/* automatic refresh of rio window is triggered by mouse */
close(open("/dev/mouse", OREAD));
}
return 0;
}
void
reset(void)
{
nrec = 0;
cur = rec;
}
void
grow(void)
{
nrec++;
if(nreca < nrec){
nreca = nrec+50;
rec = realloc(rec, nreca*sizeof(Record));
if(rec == 0){
fprint(2, "scat: realloc fails\n");
exits("realloc");
}
}
cur = rec+nrec-1;
}
void
copy(void)
{
if(noreca < nreca){
noreca = nreca;
orec = realloc(orec, nreca*sizeof(Record));
if(orec == 0){
fprint(2, "scat: realloc fails\n");
exits("realloc");
}
}
memmove(orec, rec, nrec*sizeof(Record));
norec = nrec;
}
int
eopen(char *s)
{
char buf[128];
int f;
sprint(buf, "%s/%s.scat", dir, s);
f = open(buf, 0);
if(f<0){
fprint(2, "scat: can't open %s\n", buf);
exits("open");
}
return f;
}
void
Eread(int f, char *name, void *addr, long n)
{
if(read(f, addr, n) != n){ /* BUG! */
fprint(2, "scat: read error on %s\n", name);
exits("read");
}
}
char*
skipbl(char *s)
{
while(*s!=0 && (*s==' ' || *s=='\t'))
s++;
return s;
}
char*
skipstr(char *s, char *t)
{
while(*s && *s==*t)
s++, t++;
return skipbl(s);
}
/* produce little-endian long at address l */
long
Long(long *l)
{
uchar *p;
p = (uchar*)l;
return (long)p[0]|((long)p[1]<<8)|((long)p[2]<<16)|((long)p[3]<<24);
}
/* produce little-endian long at address l */
int
Short(short *s)
{
uchar *p;
p = (uchar*)s;
return p[0]|(p[1]<<8);
}
void
nameopen(void)
{
Biobuf b;
int i;
char *l, *p;
if(namedb == 0){
namedb = eopen("name");
Binit(&b, namedb, OREAD);
for(i=0; i<NName; i++){
l = Brdline(&b, '\n');
if(l == 0)
break;
p = strchr(l, '\t');
if(p == 0){
Badformat:
Bprint(&bout, "warning: name.scat bad format; line %d\n", i+1);
break;
}
*p++ = 0;
strcpy(name[i].name, l);
if(strncmp(p, "ngc", 3) == 0)
name[i].ngc = atoi(p+3);
else if(strncmp(p, "ic", 2) == 0)
name[i].ngc = atoi(p+2)+NNGC;
else if(strncmp(p, "sao", 3) == 0)
name[i].sao = atoi(p+3);
else if(strncmp(p, "abell", 5) == 0)
name[i].abell = atoi(p+5);
else
goto Badformat;
}
if(i == NName)
Bprint(&bout, "warning: too many names in name.scat (max %d); extra ignored\n", NName);
close(namedb);
bayerdb = eopen("bayer");
Eread(bayerdb, "bayer", bayer, sizeof bayer);
close(bayerdb);
for(i=0; i<NBayer; i++)
bayer[i].sao = Long(&bayer[i].sao);
}
}
void
saoopen(void)
{
if(saodb == 0){
nameopen();
saodb = eopen("sao");
}
}
void
ngcopen(void)
{
if(ngcdb == 0){
nameopen();
ngcdb = eopen("ngc2000");
ngctypedb = eopen("ngc2000type");
Eread(ngctypedb, "ngctype", ngctype, sizeof ngctype);
close(ngctypedb);
}
}
void
abellopen(void)
{
/* nothing extra to do with abell: it's directly indexed by number */
if(abelldb == 0)
abelldb = eopen("abell");
}
void
patchopen(void)
{
Biobuf *b;
long l, m;
char buf[100];
if(patchdb == 0){
patchdb = eopen("patch");
sprint(buf, "%s/patchindex.scat", dir);
b = Bopen(buf, OREAD);
if(b == 0){
fprint(2, "can't open %s\n", buf);
exits("open");
}
for(m=0,l=0; l<=Npatch; l++)
patchaddr[l] = m += Bgetc(b)*4;
Bterm(b);
}
}
void
mopen(void)
{
int i;
if(mindexdb == 0){
mindexdb = eopen("mindex");
Eread(mindexdb, "mindex", mindex, sizeof mindex);
close(mindexdb);
for(i=0; i<NMrec; i++)
mindex[i].ngc = Short(&mindex[i].ngc);
}
}
void
constelopen(void)
{
int i;
if(condb == 0){
condb = eopen("con");
conindexdb = eopen("conindex");
Eread(conindexdb, "conindex", conindex, sizeof conindex);
close(conindexdb);
for(i=0; i<Ncon+1; i++)
conindex[i] = Short((short*)&conindex[i]);
}
}
void
lowercase(char *s)
{
for(; *s; s++)
if('A'<=*s && *s<='Z')
*s += 'a'-'A';
}
int
loadngc(long index)
{
static int failed;
long j;
ngcopen();
j = (index-1)*sizeof(NGCrec);
grow();
cur->type = NGC;
cur->index = index;
seek(ngcdb, j, 0);
/* special case: NGC data may not be available */
if(read(ngcdb, &cur->ngc, sizeof(NGCrec)) != sizeof(NGCrec)){
if(!failed){
fprint(2, "scat: NGC database not available\n");
failed++;
}
cur->type = NONGC;
cur->ngc.ngc = 0;
cur->ngc.ra = 0;
cur->ngc.dec = 0;
cur->ngc.diam = 0;
cur->ngc.mag = 0;
return 0;
}
cur->ngc.ngc = Short(&cur->ngc.ngc);
cur->ngc.ra = Long(&cur->ngc.ra);
cur->ngc.dec = Long(&cur->ngc.dec);
cur->ngc.diam = Long(&cur->ngc.diam);
cur->ngc.mag = Short(&cur->ngc.mag);
return 1;
}
int
loadabell(long index)
{
long j;
abellopen();
j = index-1;
grow();
cur->type = Abell;
cur->index = index;
seek(abelldb, j*sizeof(Abellrec), 0);
Eread(abelldb, "abell", &cur->abell, sizeof(Abellrec));
cur->abell.abell = Short(&cur->abell.abell);
if(cur->abell.abell != index){
fprint(2, "bad format in abell catalog\n");
exits("abell");
}
cur->abell.ra = Long(&cur->abell.ra);
cur->abell.dec = Long(&cur->abell.dec);
cur->abell.glat = Long(&cur->abell.glat);
cur->abell.glong = Long(&cur->abell.glong);
cur->abell.rad = Long(&cur->abell.rad);
cur->abell.mag10 = Short(&cur->abell.mag10);
cur->abell.pop = Short(&cur->abell.pop);
cur->abell.dist = Short(&cur->abell.dist);
return 1;
}
int
loadsao(int index)
{
if(index<=0 || index>NSAO)
return 0;
saoopen();
grow();
cur->type = SAO;
cur->index = index;
seek(saodb, (index-1)*sizeof(SAOrec), 0);
Eread(saodb, "sao", &cur->sao, sizeof(SAOrec));
cur->sao.ra = Long(&cur->sao.ra);
cur->sao.dec = Long(&cur->sao.dec);
cur->sao.dra = Long(&cur->sao.dra);
cur->sao.ddec = Long(&cur->sao.ddec);
cur->sao.mag = Short(&cur->sao.mag);
cur->sao.mpg = Short(&cur->sao.mpg);
cur->sao.hd = Long(&cur->sao.hd);
return 1;
}
int
loadplanet(int index, Record *r)
{
if(index<0 || index>NPlanet || planet[index].name[0]=='\0')
return 0;
grow();
cur->type = Planet;
cur->index = index;
/* check whether to take new or existing record */
if(r == nil)
memmove(&cur->planet, &planet[index], sizeof(Planetrec));
else
memmove(&cur->planet, &r->planet, sizeof(Planetrec));
return 1;
}
int
loadpatch(long index)
{
int i;
patchopen();
if(index<=0 || index>Npatch)
return 0;
grow();
cur->type = Patch;
cur->index = index;
seek(patchdb, patchaddr[index-1], 0);
cur->patch.nkey = (patchaddr[index]-patchaddr[index-1])/4;
Eread(patchdb, "patch", cur->patch.key, cur->patch.nkey*4);
for(i=0; i<cur->patch.nkey; i++)
cur->patch.key[i] = Long(&cur->patch.key[i]);
return 1;
}
int
loadtype(int t)
{
int i;
ngcopen();
for(i=0; i<NNGCrec; i++)
if(t == (ngctype[i])){
grow();
cur->type = NGCN;
cur->index = i+1;
}
return 1;
}
void
flatten(void)
{
int i, j, notflat;
Record *or;
long key;
loop:
copy();
reset();
notflat = 0;
for(i=0,or=orec; i<norec; i++,or++){
switch(or->type){
default:
fprint(2, "bad type %d in flatten\n", or->type);
break;
case NONGC:
break;
case Planet:
case Abell:
case NGC:
case SAO:
grow();
memmove(cur, or, sizeof(Record));
break;
case NGCN:
if(loadngc(or->index))
notflat = 1;
break;
case NamedSAO:
loadsao(or->index);
notflat = 1;
break;
case NamedNGC:
if(loadngc(or->index))
notflat = 1;
break;
case NamedAbell:
loadabell(or->index);
notflat = 1;
break;
case PatchC:
loadpatch(or->index);
notflat = 1;
break;
case Patch:
for(j=1; j<or->patch.nkey; j++){
key = or->patch.key[j];
if((key&0x3F) == SAO)
loadsao((key>>8)&0xFFFFFF);
else if((key&0x3F) == Abell)
loadabell((key>>8)&0xFFFFFF);
else
loadngc((key>>16)&0xFFFF);
}
break;
}
}
if(notflat)
goto loop;
}
int
ism(int index)
{
int i;
for(i=0; i<NMrec; i++)
if(mindex[i].ngc == index)
return 1;
return 0;
}
char*
alpha(char *s, char *t)
{
int n;
n = strlen(t);
if(strncmp(s, t, n)==0 && (s[n]<'a' || 'z'<s[n]))
return skipbl(s+n);
return 0;
}
char*
text(char *s, char *t)
{
int n;
n = strlen(t);
if(strncmp(s, t, n)==0 && (s[n]==0 || s[n]==' ' || s[n]=='\t'))
return skipbl(s+n);
return 0;
}
int
cull(char *s, int keep, int dobbox)
{
int i, j, nobj, keepthis;
Record *or;
char *t;
int dogrtr, doless, dom, dosao, dongc, doabell;
int mgrtr, mless;
char obj[100];
memset(obj, 0, sizeof(obj));
nobj = 0;
dogrtr = 0;
doless = 0;
dom = 0;
dongc = 0;
dosao = 0;
doabell = 0;
mgrtr = mless= 0;
if(dobbox)
goto Cull;
for(;;){
if(s[0] == '>'){
dogrtr = 1;
mgrtr = 10 * strtod(s+1, &t);
if(mgrtr==0 && t==s+1){
fprint(2, "bad magnitude\n");
return 0;
}
s = skipbl(t);
continue;
}
if(s[0] == '<'){
doless = 1;
mless = 10 * strtod(s+1, &t);
if(mless==0 && t==s+1){
fprint(2, "bad magnitude\n");
return 0;
}
s = skipbl(t);
continue;
}
if(t = text(s, "m")){
dom = 1;
s = t;
continue;
}
if(t = text(s, "sao")){
dosao = 1;
s = t;
continue;
}
if(t = text(s, "ngc")){
dongc = 1;
s = t;
continue;
}
if(t = text(s, "abell")){
doabell = 1;
s = t;
continue;
}
for(i=0; names[i].name; i++)
if(t = alpha(s, names[i].name)){
if(nobj > 100){
fprint(2, "too many object types\n");
return 0;
}
obj[nobj++] = names[i].type;
s = t;
goto Continue;
}
break;
Continue:;
}
if(*s){
fprint(2, "syntax error in object list\n");
return 0;
}
Cull:
flatten();
copy();
reset();
if(dom)
mopen();
if(dosao)
saoopen();
if(dongc || nobj)
ngcopen();
if(doabell)
abellopen();
for(i=0,or=orec; i<norec; i++,or++){
keepthis = !keep;
if(dobbox && inbbox(or->ngc.ra, or->ngc.dec))
keepthis = keep;
if(doless && or->ngc.mag <= mless)
keepthis = keep;
if(dogrtr && or->ngc.mag >= mgrtr)
keepthis = keep;
if(dom && (or->type==NGC && ism(or->ngc.ngc)))
keepthis = keep;
if(dongc && or->type==NGC)
keepthis = keep;
if(doabell && or->type==Abell)
keepthis = keep;
if(dosao && or->type==SAO)
keepthis = keep;
for(j=0; j<nobj; j++)
if(or->type==NGC && or->ngc.type==obj[j])
keepthis = keep;
if(keepthis){
grow();
memmove(cur, or, sizeof(Record));
}
}
return 1;
}
int
compar(void *va, void *vb)
{
Record *a=va, *b=vb;
if(a->type == b->type)
return a->index - b->index;
return a->type - b->type;
}
void
sort(void)
{
int i;
Record *r, *s;
if(nrec == 0)
return;
qsort(rec, nrec, sizeof(Record), compar);
r = rec+1;
s = rec;
for(i=1; i<nrec; i++,r++){
/* may have multiple instances of a planet in the scene */
if(r->type==s->type && r->index==s->index && r->type!=Planet)
continue;
memmove(++s, r, sizeof(Record));
}
nrec = (s+1)-rec;
}
char greekbuf[128];
char*
togreek(char *s)
{
char *t;
int i, n;
Rune r;
t = greekbuf;
while(*s){
for(i=1; i<=24; i++){
n = strlen(greek[i]);
if(strncmp(s, greek[i], n)==0 && (s[n]==' ' || s[n]=='\t')){
s += n;
t += runetochar(t, &greeklet[i]);
goto Cont;
}
}
n = chartorune(&r, s);
for(i=0; i<n; i++)
*t++ = *s++;
Cont:;
}
*t = 0;
return greekbuf;
}
char*
fromgreek(char *s)
{
char *t;
int i, n;
Rune r;
t = greekbuf;
while(*s){
n = chartorune(&r, s);
for(i=1; i<=24; i++){
if(r == greeklet[i]){
strcpy(t, greek[i]);
t += strlen(greek[i]);
s += n;
goto Cont;
}
}
for(i=0; i<n; i++)
*t++ = *s++;
Cont:;
}
*t = 0;
return greekbuf;
}
#ifdef OLD
/*
* Old version
*/
int
coords(int deg)
{
int i;
int x, y;
Record *or;
long dec, ra, ndec, nra;
int rdeg;
flatten();
copy();
reset();
deg *= 2;
for(i=0,or=orec; i<norec; i++,or++){
if(or->type == Planet) /* must keep it here */
loadplanet(or->index, or);
dec = or->ngc.dec/MILLIARCSEC;
ra = or->ngc.ra/MILLIARCSEC;
rdeg = deg/cos((dec*PI)/180);
for(y=-deg; y<=+deg; y++){
ndec = dec*2+y;
if(ndec/2>=90 || ndec/2<=-90)
continue;
/* fp errors hurt here, so we round 1' to the pole */
if(ndec >= 0)
ndec = ndec*500*60*60 + 60000;
else
ndec = ndec*500*60*60 - 60000;
for(x=-rdeg; x<=+rdeg; x++){
nra = ra*2+x;
if(nra/2 < 0)
nra += 360*2;
if(nra/2 >= 360)
nra -= 360*2;
/* fp errors hurt here, so we round up 1' */
nra = nra/2*MILLIARCSEC + 60000;
loadpatch(patcha(angle(nra), angle(ndec)));
}
}
}
sort();
return 1;
}
#endif
/*
* New version attempts to match the boundaries of the plot better.
*/
int
coords(int deg)
{
int i;
int x, y, xx;
Record *or;
long min, circle;
double factor;
flatten();
circle = 360*MILLIARCSEC;
deg *= MILLIARCSEC;
/* find center */
folded = 0;
bbox(0, 0, 0);
/* now expand */
factor = cos(angle((decmax+decmin)/2));
if(factor < .2)
factor = .2;
factor = floor(1/factor);
folded = 0;
bbox(factor*deg, deg, 1);
Bprint(&bout, "%s to ", hms(angle(ramin)));
Bprint(&bout, "%s\n", hms(angle(ramax)));
Bprint(&bout, "%s to ", dms(angle(decmin)));
Bprint(&bout, "%s\n", dms(angle(decmax)));
copy();
reset();
for(i=0,or=orec; i<norec; i++,or++)
if(or->type == Planet) /* must keep it here */
loadplanet(or->index, or);
min = ramin;
if(ramin > ramax)
min -= circle;
for(x=min; x<=ramax; x+=250*60*60){
xx = x;
if(xx < 0)
xx += circle;
for(y=decmin; y<=decmax; y+=250*60*60)
if(-circle/4 < y && y < circle/4)
loadpatch(patcha(angle(xx), angle(y)));
}
sort();
cull(nil, 1, 1);
return 1;
}
void
pplate(char *flags)
{
int i;
long c;
int na, rah, ram, d1, d2;
double r0;
int ra, dec;
long ramin, ramax, decmin, decmax; /* all in degrees */
Record *r;
int folded;
Angle racenter, deccenter, rasize, decsize, a[4];
Picture *pic;
rasize = -1.0;
decsize = -1.0;
na = 0;
for(;;){
while(*flags==' ')
flags++;
if(('0'<=*flags && *flags<='9') || *flags=='+' || *flags=='-'){
if(na >= 3)
goto err;
a[na++] = getra(flags);
while(*flags && *flags!=' ')
flags++;
continue;
}
if(*flags){
err:
Bprint(&bout, "syntax error in plate\n");
return;
}
break;
}
switch(na){
case 0:
break;
case 1:
rasize = a[0];
decsize = rasize;
break;
case 2:
rasize = a[0];
decsize = a[1];
break;
case 3:
case 4:
racenter = a[0];
deccenter = a[1];
rasize = a[2];
if(na == 4)
decsize = a[3];
else
decsize = rasize;
if(rasize<0.0 || decsize<0.0){
Bprint(&bout, "negative sizes\n");
return;
}
goto done;
}
folded = 0;
/* convert to milliarcsec */
c = 1000*60*60;
Again:
if(nrec == 0){
Bprint(&bout, "empty\n");
return;
}
ramin = 0x7FFFFFFF;
ramax = -0x7FFFFFFF;
decmin = 0x7FFFFFFF;
decmax = -0x7FFFFFFF;
for(r=rec,i=0; i<nrec; i++,r++){
if(r->type == Patch){
radec(r->index, &rah, &ram, &dec);
ra = 15*rah+ram/4;
r0 = c/cos(RAD(dec));
ra *= c;
dec *= c;
if(dec == 0)
d1 = c, d2 = c;
else if(dec < 0)
d1 = c, d2 = 0;
else
d1 = 0, d2 = c;
}else if(r->type==SAO || r->type==NGC || r->type==Abell){
ra = r->ngc.ra;
dec = r->ngc.dec;
d1 = 0, d2 = 0, r0 = 0;
}else if(r->type==NGCN){
loadngc(r->index);
continue;
}else if(r->type==NamedSAO){
loadsao(r->index);
continue;
}else if(r->type==NamedNGC){
loadngc(r->index);
continue;
}else if(r->type==NamedAbell){
loadabell(r->index);
continue;
}else
continue;
if(dec+d2 > decmax)
decmax = dec+d2;
if(dec-d1 < decmin)
decmin = dec-d1;
if(folded){
ra -= 180*c;
if(ra < 0)
ra += 360*c;
}
if(ra+r0 > ramax)
ramax = ra+r0;
if(ra < ramin)
ramin = ra;
}
if(!folded && ramax-ramin>270*c){
folded = 1;
goto Again;
}
racenter = angle(ramin+(ramax-ramin)/2);
deccenter = angle(decmin+(decmax-decmin)/2);
if(rasize<0 || decsize<0){
rasize = angle(ramax-ramin)*cos(deccenter);
decsize = angle(decmax-decmin);
}
done:
if(DEG(rasize)>1.1 || DEG(decsize)>1.1){
Bprint(&bout, "plate too big: %s", ms(rasize));
Bprint(&bout, " x %s\n", ms(decsize));
Bprint(&bout, "trimming to 30'x30'\n");
rasize = RAD(0.5);
decsize = RAD(0.5);
}
Bprint(&bout, "%s %s ", hms(racenter), dms(deccenter));
Bprint(&bout, "%s", ms(rasize));
Bprint(&bout, " x %s\n", ms(decsize));
Bflush(&bout);
flatten();
pic = image(racenter, deccenter, rasize, decsize);
if(pic == 0)
return;
Bprint(&bout, "plate %s locn %d %d %d %d\n", pic->name, pic->minx, pic->miny, pic->maxx, pic->maxy);
Bflush(&bout);
displaypic(pic);
}
void
lookup(char *s, int doreset)
{
int i, j, k;
int rah, ram, deg;
char *starts, *inputline=s, *t, *u;
Record *r;
long n;
double x;
Angle ra;
lowercase(s);
s = skipbl(s);
if(*s == 0)
goto Print;
if(t = alpha(s, "flat")){
if(*t){
fprint(2, "flat takes no arguments\n");
return;
}
if(nrec == 0){
fprint(2, "no records\n");
return;
}
flatten();
goto Print;
}
if(t = alpha(s, "print")){
if(*t){
fprint(2, "print takes no arguments\n");
return;
}
for(i=0,r=rec; i<nrec; i++,r++)
prrec(r);
return;
}
if(t = alpha(s, "add")){
lookup(t, 0);
return;
}
if(t = alpha(s, "sao")){
n = strtoul(t, &u, 10);
if(n<=0 || n>NSAO)
goto NotFound;
t = skipbl(u);
if(*t){
fprint(2, "syntax error in sao\n");
return;
}
if(doreset)
reset();
if(!loadsao(n))
goto NotFound;
goto Print;
}
if(t = alpha(s, "ngc")){
n = strtoul(t, &u, 10);
if(n<=0 || n>NNGC)
goto NotFound;
t = skipbl(u);
if(*t){
fprint(2, "syntax error in ngc\n");
return;
}
if(doreset)
reset();
if(!loadngc(n))
goto NotFound;
goto Print;
}
if(t = alpha(s, "ic")){
n = strtoul(t, &u, 10);
if(n<=0 || n>NIC)
goto NotFound;
t = skipbl(u);
if(*t){
fprint(2, "syntax error in ic\n");
return;
}
if(doreset)
reset();
if(!loadngc(n+NNGC))
goto NotFound;
goto Print;
}
if(t = alpha(s, "abell")){
n = strtoul(t, &u, 10);
if(n<=0 || n>NAbell)
goto NotFound;
if(doreset)
reset();
if(!loadabell(n))
goto NotFound;
goto Print;
}
if(t = alpha(s, "m")){
n = strtoul(t, &u, 10);
if(n<=0 || n>NM)
goto NotFound;
mopen();
for(j=n-1; mindex[j].m<n; j++)
;
if(doreset)
reset();
while(mindex[j].m == n){
if(mindex[j].ngc){
grow();
cur->type = NGCN;
cur->index = mindex[j].ngc;
}
j++;
}
goto Print;
}
for(i=1; i<=Ncon; i++)
if(t = alpha(s, constel[i])){
if(*t){
fprint(2, "syntax error in constellation\n");
return;
}
constelopen();
seek(condb, 4L*conindex[i-1], 0);
j = conindex[i]-conindex[i-1];
Eread(condb, "con", con, 4*j);
if(doreset)
reset();
for(k=0; k<j; k++){
grow();
cur->type = PatchC;
cur->index = Long(&con[k]);
}
goto Print;
}
if(t = alpha(s, "expand")){
n = 0;
if(*t){
if(*t<'0' && '9'<*t){
Expanderr:
fprint(2, "syntax error in expand\n");
return;
}
n = strtoul(t, &u, 10);
t = skipbl(u);
if(*t)
goto Expanderr;
}
coords(n);
goto Print;
}
if(t = alpha(s, "plot")){
if(nrec == 0){
Bprint(&bout, "empty\n");
return;
}
plot(t);
return;
}
if(t = alpha(s, "astro")){
astro(t, 0);
return;
}
if(t = alpha(s, "plate")){
pplate(t);
return;
}
if(t = alpha(s, "gamma")){
while(*t==' ')
t++;
u = t;
x = strtod(t, &u);
if(u > t)
gam.gamma = x;
Bprint(&bout, "%.2f\n", gam.gamma);
return;
}
if(t = alpha(s, "keep")){
if(!cull(t, 1, 0))
return;
goto Print;
}
if(t = alpha(s, "drop")){
if(!cull(t, 0, 0))
return;
goto Print;
}
for(i=0; planet[i].name[0]; i++){
if(t = alpha(s, planet[i].name)){
if(doreset)
reset();
loadplanet(i, nil);
goto Print;
}
}
for(i=0; names[i].name; i++){
if(t = alpha(s, names[i].name)){
if(*t){
fprint(2, "syntax error in type\n");
return;
}
if(doreset)
reset();
loadtype(names[i].type);
goto Print;
}
}
switch(s[0]){
case '"':
starts = ++s;
while(*s != '"')
if(*s++ == 0){
fprint(2, "bad star name\n");
return;
}
*s = 0;
if(doreset)
reset();
j = nrec;
saoopen();
starts = fromgreek(starts);
for(i=0; i<NName; i++)
if(equal(starts, name[i].name)){
grow();
if(name[i].sao){
rec[j].type = NamedSAO;
rec[j].index = name[i].sao;
}
if(name[i].ngc){
rec[j].type = NamedNGC;
rec[j].index = name[i].ngc;
}
if(name[i].abell){
rec[j].type = NamedAbell;
rec[j].index = name[i].abell;
}
strcpy(rec[j].named.name, name[i].name);
j++;
}
if(parsename(starts))
for(i=0; i<NBayer; i++)
if(bayer[i].name[0]==parsed[0] &&
(bayer[i].name[1]==parsed[1] || parsed[1]==0) &&
bayer[i].name[2]==parsed[2]){
grow();
rec[j].type = NamedSAO;
rec[j].index = bayer[i].sao;
strncpy(rec[j].named.name, starts, sizeof(rec[j].named.name));
j++;
}
if(j == 0){
*s = '"';
goto NotFound;
}
break;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
strtoul(s, &t, 10);
if(*t != 'h'){
BadCoords:
fprint(2, "bad coordinates %s\n", inputline);
break;
}
ra = DEG(getra(s));
while(*s && *s!=' ' && *s!='\t')
s++;
rah = ra/15;
ra = ra-rah*15;
ram = ra*4;
deg = strtol(s, &t, 10);
if(t == s)
goto BadCoords;
/* degree sign etc. is optional */
if((uchar)*t == L'°')
deg = DEG(getra(s));
if(doreset)
reset();
if(abs(deg)>=90 || rah>=24)
goto BadCoords;
if(!loadpatch(patch(rah, ram, deg)))
goto NotFound;
break;
default:
fprint(2, "unknown command %s\n", inputline);
return;
}
Print:
if(nrec == 0)
Bprint(&bout, "empty\n");
else if(nrec <= 2)
for(i=0; i<nrec; i++)
prrec(rec+i);
else
Bprint(&bout, "%ld items\n", nrec);
return;
NotFound:
fprint(2, "%s not found\n", inputline);
return;
}
char *ngctypes[] =
{
[Galaxy] "Gx",
[PlanetaryN] "Pl",
[OpenCl] "OC",
[GlobularCl] "Gb",
[DiffuseN] "Nb",
[NebularCl] "C+N",
[Asterism] "Ast",
[Knot] "Kt",
[Triple] "***",
[Double] "D*",
[Single] "*",
[Uncertain] "?",
[Nonexistent] "-",
[Unknown] " ",
[PlateDefect] "PD",
};
char*
ngcstring(int d)
{
if(d<Galaxy || d>PlateDefect)
return "can't happen";
return ngctypes[d];
}
short descindex[NINDEX];
void
printnames(Record *r)
{
int i, ok, done;
done = 0;
for(i=0; i<NName; i++){ /* stupid linear search! */
ok = 0;
if(r->type==SAO && r->index==name[i].sao)
ok = 1;
if(r->type==NGC && r->ngc.ngc==name[i].ngc)
ok = 1;
if(r->type==Abell && r->abell.abell==name[i].abell)
ok = 1;
if(ok){
if(done++ == 0)
Bprint(&bout, "\t");
Bprint(&bout, " \"%s\"", togreek(name[i].name));
}
}
if(done)
Bprint(&bout, "\n");
}
int
equal(char *s1, char *s2)
{
int c;
while(*s1){
if(*s1==' '){
while(*s1==' ')
s1++;
continue;
}
while(*s2==' ')
s2++;
c=*s2;
if('A'<=*s2 && *s2<='Z')
c^=' ';
if(*s1!=c)
return 0;
s1++, s2++;
}
return 1;
}
int
parsename(char *s)
{
char *blank;
int i;
blank = strchr(s, ' ');
if(blank==0 || strchr(blank+1, ' ') || strlen(blank+1)!=3)
return 0;
blank++;
parsed[0] = parsed[1] = parsed[2] = 0;
if('0'<=s[0] && s[0]<='9'){
i = atoi(s);
parsed[0] = i;
if(i > 100)
return 0;
}else{
for(i=1; i<=24; i++)
if(strncmp(greek[i], s, strlen(greek[i]))==0){
parsed[0]=100+i;
goto out;
}
return 0;
out:
if('0'<=s[strlen(greek[i])] && s[strlen(greek[i])]<='9')
parsed[1]=s[strlen(greek[i])]-'0';
}
for(i=1; i<=88; i++)
if(strcmp(constel[i], blank)==0){
parsed[2] = i;
return 1;
}
return 0;
}
char*
dist_grp(int dg)
{
switch(dg){
default:
return "unknown";
case 1:
return "13.3-14.0";
case 2:
return "14.1-14.8";
case 3:
return "14.9-15.6";
case 4:
return "15.7-16.4";
case 5:
return "16.5-17.2";
case 6:
return "17.3-18.0";
case 7:
return ">18.0";
}
}
char*
rich_grp(int dg)
{
switch(dg){
default:
return "unknown";
case 0:
return "30-40";
case 1:
return "50-79";
case 2:
return "80-129";
case 3:
return "130-199";
case 4:
return "200-299";
case 5:
return ">=300";
}
}
char*
nameof(Record *r)
{
NGCrec *n;
SAOrec *s;
Abellrec *a;
static char buf[128];
int i;
switch(r->type){
default:
return nil;
case SAO:
s = &r->sao;
if(s->name[0] == 0)
return nil;
if(s->name[0] >= 100){
i = snprint(buf, sizeof buf, "%C", greeklet[s->name[0]-100]);
if(s->name[1])
i += snprint(buf+i, sizeof buf-i, "%d", s->name[1]);
}else
i = snprint(buf, sizeof buf, " %d", s->name[0]);
snprint(buf+i, sizeof buf-i, " %s", constel[s->name[2]]);
break;
case NGC:
n = &r->ngc;
if(n->type >= Uncertain)
return nil;
if(n->ngc <= NNGC)
snprint(buf, sizeof buf, "NGC%4d ", n->ngc);
else
snprint(buf, sizeof buf, "IC%4d ", n->ngc-NNGC);
break;
case Abell:
a = &r->abell;
snprint(buf, sizeof buf, "Abell%4d", a->abell);
break;
}
return buf;
}
void
prrec(Record *r)
{
NGCrec *n;
SAOrec *s;
Abellrec *a;
Planetrec *p;
int i, rah, ram, dec, nn;
long key;
if(r) switch(r->type){
default:
fprint(2, "can't prrec type %d\n", r->type);
exits("type");
case Planet:
p = &r->planet;
Bprint(&bout, "%s", p->name);
Bprint(&bout, "\t%s %s",
hms(angle(p->ra)),
dms(angle(p->dec)));
Bprint(&bout, " %3.2f° %3.2f°",
p->az/(double)MILLIARCSEC, p->alt/(double)MILLIARCSEC);
Bprint(&bout, " %s",
ms(angle(p->semidiam)));
if(r->index <= 1)
Bprint(&bout, " %g", p->phase);
Bprint(&bout, "\n");
break;
case NGC:
n = &r->ngc;
if(n->ngc <= NNGC)
Bprint(&bout, "NGC%4d ", n->ngc);
else
Bprint(&bout, "IC%4d ", n->ngc-NNGC);
Bprint(&bout, "%s ", ngcstring(n->type));
if(n->mag == UNKNOWNMAG)
Bprint(&bout, "----");
else
Bprint(&bout, "%.1f%c", n->mag/10.0, n->magtype);
Bprint(&bout, "\t%s %s\t%c%.1f'\n",
hm(angle(n->ra)),
dm(angle(n->dec)),
n->diamlim,
DEG(angle(n->diam))*60.);
prdesc(n->desc, desctab, descindex);
printnames(r);
break;
case Abell:
a = &r->abell;
Bprint(&bout, "Abell%4d %.1f %.2f° %dMpc", a->abell, a->mag10/10.0,
DEG(angle(a->rad)), a->dist);
Bprint(&bout, "\t%s %s\t%.2f %.2f\n",
hm(angle(a->ra)),
dm(angle(a->dec)),
DEG(angle(a->glat)),
DEG(angle(a->glong)));
Bprint(&bout, "\tdist grp: %s rich grp: %s %d galaxies/°²\n",
dist_grp(a->distgrp),
rich_grp(a->richgrp),
a->pop);
printnames(r);
break;
case SAO:
s = &r->sao;
Bprint(&bout, "SAO%6ld ", r->index);
if(s->mag==UNKNOWNMAG)
Bprint(&bout, "---");
else
Bprint(&bout, "%.1f", s->mag/10.0);
if(s->mpg==UNKNOWNMAG)
Bprint(&bout, ",---");
else
Bprint(&bout, ",%.1f", s->mpg/10.0);
Bprint(&bout, " %s %s %.4fs %.3f\"",
hms(angle(s->ra)),
dms(angle(s->dec)),
DEG(angle(s->dra))*(4*60),
DEG(angle(s->ddec))*(60*60));
Bprint(&bout, " %.3s %c %.2s %ld %d",
s->spec, s->code, s->compid, s->hd, s->hdcode);
if(s->name[0])
Bprint(&bout, " \"%s\"", nameof(r));
Bprint(&bout, "\n");
printnames(r);
break;
case Patch:
radec(r->index, &rah, &ram, &dec);
Bprint(&bout, "%dh%dm %d°", rah, ram, dec);
key = r->patch.key[0];
Bprint(&bout, " %s", constel[key&0xFF]);
if((key>>=8) & 0xFF)
Bprint(&bout, " %s", constel[key&0xFF]);
if((key>>=8) & 0xFF)
Bprint(&bout, " %s", constel[key&0xFF]);
if((key>>=8) & 0xFF)
Bprint(&bout, " %s", constel[key&0xFF]);
for(i=1; i<r->patch.nkey; i++){
key = r->patch.key[i];
switch(key&0x3F){
case SAO:
Bprint(&bout, " SAO%ld", (key>>8)&0xFFFFFF);
break;
case Abell:
Bprint(&bout, " Abell%ld", (key>>8)&0xFFFFFF);
break;
default: /* NGC */
nn = (key>>16)&0xFFFF;
if(nn > NNGC)
Bprint(&bout, " IC%d", nn-NNGC);
else
Bprint(&bout, " NGC%d", nn);
Bprint(&bout, "(%s)", ngcstring(key&0x3F));
break;
}
}
Bprint(&bout, "\n");
break;
case NGCN:
if(r->index <= NNGC)
Bprint(&bout, "NGC%ld\n", r->index);
else
Bprint(&bout, "IC%ld\n", r->index-NNGC);
break;
case NamedSAO:
Bprint(&bout, "SAO%ld \"%s\"\n", r->index, togreek(r->named.name));
break;
case NamedNGC:
if(r->index <= NNGC)
Bprint(&bout, "NGC%ld \"%s\"\n", r->index, togreek(r->named.name));
else
Bprint(&bout, "IC%ld \"%s\"\n", r->index-NNGC, togreek(r->named.name));
break;
case NamedAbell:
Bprint(&bout, "Abell%ld \"%s\"\n", r->index, togreek(r->named.name));
break;
case PatchC:
radec(r->index, &rah, &ram, &dec);
Bprint(&bout, "%dh%dm %d\n", rah, ram, dec);
break;
}
}