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funopenp.c
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funopenp.c
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/*
* Copyright (c) 2005 Smithsonian Astrophysical Observatory
*/
#include <funtoolsP.h>
#include <ctype.h>
/*
*
* semi-public routines shared between funopen.c and other open modules
*
*/
/*
*
* _FunNew -- allocate a new fun record
*
*/
#ifdef ANSI_FUNC
Fun
_FunNew(void)
#else
Fun _FunNew()
#endif
{
Fun fun;
fun = (Fun)xcalloc(1, sizeof(FunRec));
/* set the magic value */
fun->magic = FUN_MAGIC;
/* set table binning values to impossible values */
fun->bin[0] = -1;
fun->bin[1] = -1;
/* no value column for binning yet */
fun->vbin = -1;
/* reset header position flag */
fun->headpos = (off_t)-1;
/* no data yet */
fun->datastart = (off_t)-1;
/* init save fd's to impossible values */
fun->lmem = -1;
/* set binsiz values to default value of 1 */
fun->binsiz1 = 1;
fun->binsiz2 = 1;
/* no reaon why we can't filter */
fun->dofilt = 1;
/* convert flags not yet set */
fun->iconvert = -1;
fun->oconvert = -1;
/* assume 2D image */
fun->dims = 2;
return fun;
}
#ifdef ANSI_FUNC
int
_FunSpecialFile(char *fname, char *type,
char *name, char *tail, char *special, int mlen)
#else
int _FunSpecialFile(fname, type, name, tail, special, mlen)
char *fname;
char *type;
char *name;
char *tail;
char *special;
int mlen;
#endif
{
int len, tlen;
char *s, *t;
char tbuf[SZ_LINE];
/* start off pessimistically */
*name = '\0';
*tail = '\0';
*special = '\0';
/* get type string */
strncpy(tbuf, type, SZ_LINE-1);
strncat(tbuf, "(", SZ_LINE-1);
len = strlen(tbuf);
/* look for [TYPE(...) */
if( ((s=strchr(fname, '['))||(s=strchr(fname, ','))) &&
!strncasecmp(s+1, tbuf, len) && (t=strchr(s, ')')) &&
((*(t+1) == ')') || (*(t+1) == ',') || (*(t+1) == ']')) ){
tlen = MIN(mlen-1,s-fname);
strncpy(name, fname, tlen);
name[tlen] = '\0';
while( *(s+len+1) == '(' ) s++;
tlen = MIN(mlen-1,t-(s+len+1));
strncpy(special, s+len+1, tlen);
special[tlen] = '\0';
/* if special specification is blank, try to get it from the environment */
if( !*special && getenv(type) ) strncpy(special, getenv(type), mlen);
special[mlen-1] = '\0';
/* create tail, skipping empty section if necessary */
while( *t == ')' ) t++;
if( *t != ']' ){
strncpy(tail, "[", mlen);
strncat(tail, t, mlen);
}
else{
strncpy(tail, ++t, mlen);
}
tail[mlen-1] = '\0';
return 1;
}
else{
return 0;
}
}
/*
*
* _FunRowNum -- get table/event row limits
*
*/
#ifdef ANSI_FUNC
int
_FunRowNum(Fun fun, char *tail, char *env)
#else
int _FunRowNum(fun, tail, env)
Fun fun;
char *tail;
char *env;
#endif
{
char lobuf[SZ_LINE];
char hibuf[SZ_LINE];
char key[SZ_LINE];
char *k;
int ip=0;
int lo, hi;
int skip;
/* first look in the extension for row range specification */
if( _FunKeyword(tail, "row#", env, key, SZ_LINE) ){
/* use a few command separators (as well as \n) */
newdtable(",:)");
k = key;
/* point past first paren */
if( *k == '(' )
k++;
/* process row specifiers */
if( word(k, lobuf, &ip) ){
/* set lo limit */
if( !strcmp(lobuf, "*") )
lo = 1;
else
lo = atoi(lobuf);
/* set hi limit */
if( word(k, hibuf, &ip) ){
if( !strcmp(hibuf, "*") )
hi = fun->total;
else
hi = atoi(hibuf);
}
/* if no hi limit, use lo (i.e. 1 row) ... or maybe use all rows */
else{
if( !strcmp(lobuf, "*") )
hi = fun->total;
else
hi = lo;
}
/* must be within range */
lo = MAX(1,lo);
hi = MIN(fun->total,hi);
/* skip past initial rows we are not interested in */
if( lo > 1 ){
skip = (lo-1) * fun->rawsize;
gskip(fun->gio, (off_t)skip);
fun->bytes += skip;
}
fun->left -= (lo-1);
fun->left -= (fun->total-hi);
}
freedtable();
return 1;
}
else
return 0;
}
/*
*
* _FunTableBinCols -- get table columns for binning
*
*/
#ifdef ANSI_FUNC
int
_FunTableBinCols(Fun fun, char *tail, char *env)
#else
int _FunTableBinCols(fun, tail, env)
Fun fun;
char *tail;
char *env;
#endif
{
FITSCard card;
int i, j, n;
int got;
int ip=0;
int dims;
int scaled;
double tlmin, tlmax, binsiz, tscale, tzero;
char *s;
char *k;
char key[SZ_LINE];
char tbuf[SZ_LINE];
char tbuf2[SZ_LINE];
char binstr[2][SZ_LINE];
static char *tstr[] = {"X", "Y"};
static char *tstr2[] = {"x", "y"};
/* set keys to impossible values */
fun->bin[0] = -1;
fun->bin[1] = -1;
/* for backward compatibility, we look for binkey as well */
if( !strcmp(env, "FITS_BINCOLS" ) )
strcpy(tbuf2, "FITS_BINKEY");
else if( !strcmp(env, "EVENTS_BINCOLS" ) )
strcpy(tbuf2, "EVENTS_BINKEY");
else if( !strcmp(env, "TEXT_BINCOLS" ) )
strcpy(tbuf2, "TEXT_BINKEY");
else
*tbuf2 = '\0';
/* first look in the extension for binning specification */
if( _FunKeyword(tail, "bincols", env, tbuf, SZ_LINE) ){
strcpy(key, tbuf);
}
else if( _FunKeyword(tail, "bincol", env, tbuf, SZ_LINE) ){
strcpy(key, tbuf);
}
/* backward compatibility */
else if( _FunKeyword(tail, "binkey", tbuf2, tbuf, SZ_LINE) ){
strcpy(key, tbuf);
}
/* look for default binning specifications */
else{
got = 0;
*key = '\0';
/* look for CHANDRA PREFX keyword */
for(j=1; j<=2; j++){
if( (s=ft_headgets(fun->header, "CPREF", j, NULL, &card)) && card){
strcat(key, s);
strcat(key, ",");
got |= j;
if( s ) xfree(s);
}
else if( (s=ft_headgets(fun->header, "PREFX", j, NULL, &card)) && card){
strcat(key, s);
strcat(key, ",");
got |= j;
if( s ) xfree(s);
}
}
/* look specifically for X, Y */
if( got != 3 ){
got = 0;
*key = '\0';
for(j=0; j<=1; j++){
/* first look for X,Y as the default */
for(i=0; i<fun->header->table->tfields; i++){
if( !fun->header->table->col[i].name ) continue;
if( !strcasecmp(fun->header->table->col[i].name, tstr[j]) ){
strcat(key, tstr[j]);
strcat(key, ",");
got |= (j+1);
break;
}
}
}
}
/* if we did not get X (or Y), look for anything containing an X (or Y) */
if( got != 3 ){
got = 0;
*key = '\0';
for(j=0; j<=1; j++){
/* don't look a second time for a bin value we already have */
if( got & (j+1) )
continue;
for(i=0; i<fun->header->table->tfields; i++){
if( !fun->header->table->col[i].name ) continue;
if( strstr(fun->header->table->col[i].name, tstr[j]) != NULL ){
strcat(key, fun->header->table->col[i].name);
strcat(key, ",");
break;
}
/* sigh ... its gotta be case insensitive */
else if( strstr(fun->header->table->col[i].name, tstr2[j]) != NULL ){
strcat(key, fun->header->table->col[i].name);
strcat(key, ",");
break;
}
}
}
}
}
/* seed the dim values */
fun->min1 = 1;
fun->max1 = -1;
fun->min2 = 1;
fun->max2 = -1;
/* prepare to parse the bincol specifier */
newdtable(",)");
k = key;
/* point past first paren */
while( (*k == '(') || (*k == '"') ) k++;
/* separate x and y specifiers */
if( !word(k, binstr[0], &ip) )
goto error;
else
n=1;
if( word(k, binstr[1], &ip) )
n++;
freedtable();
/* make sure columns are in the table, and check for
manually-specified image dimensions and binsize info */
for(got=0, j=0; j<n; j++){
/* look for specifiers after the name */
if( (s = strchr(binstr[j], ':')) ){
strncpy(tbuf, binstr[j], s-binstr[j]);
tbuf[s-binstr[j]] = '\0';
}
else{
strcpy(tbuf, binstr[j]);
}
/* look among columns for this column name */
for(i=0; i<fun->header->table->tfields; i++){
if( !fun->header->table->col[i].name ) continue;
if( !strcasecmp(fun->header->table->col[i].name, tbuf) ){
/* save the column number */
fun->bin[j] = i;
/* if dim/binsize was specified, put it all back into the header */
if( _FunColumnDims(s, fun->header->table->col[i].type,
&tlmin, &tlmax, &binsiz, &dims,
&tscale, &tzero, &scaled)){
switch(fun->header->table->col[i].type){
case 'D':
case 'E':
if( tlmin != tlmax ){
ft_headsetr(fun->header, "TLMIN", i+1, tlmin, 7,
"Min. axis value", 1);
ft_headsetr(fun->header, "TLMAX", i+1, tlmax, 7,
"Max. axis value", 1);
}
if( binsiz > 0 ){
ft_headsetr(fun->header, "TDBIN", i+1, binsiz, 7,
"Binsize", 1);
}
break;
default:
if( tlmin != tlmax ){
ft_headseti(fun->header, "TLMIN", i+1, (int)tlmin,
"Min. axis value", 1);
ft_headseti(fun->header, "TLMAX", i+1, (int)tlmax,
"Max. axis value", 1);
}
if( binsiz > 0 ){
ft_headsetr(fun->header, "TDBIN", i+1, binsiz, 7,
"Binsize", 1);
}
break;
}
}
/* add scaling parameters if necessary */
if( scaled ){
ft_headsetr(fun->header, "TSCAL", i+1, tscale, 7,
"phys_val= tzero + tscale * field_val", 1);
ft_headsetr(fun->header, "TZERO", i+1, tscale, 7,
"phys_val= tzero + tscale * field_val", 1);
}
got |= (j+1);
break;
}
}
}
/* better have at least one column and, if we have only one binning
parameter, it has to be in bin[0] */
if( (got==0) || (got==2) )
return 0;
/* save bincols (string is used in FilterOpen, for example) */
switch(got){
case 1:
snprintf(tbuf, SZ_LINE-1, "bincols=(%s)",
fun->header->table->col[fun->bin[0]].name);
fun->dims = 1;
break;
case 2:
/* this never gets executed because we disallow this case */
snprintf(tbuf, SZ_LINE-1, "bincols=(%s)",
fun->header->table->col[fun->bin[1]].name);
fun->dims = 1;
break;
case 3:
snprintf(tbuf, SZ_LINE-1, "bincols=(%s,%s)",
fun->header->table->col[fun->bin[0]].name,
fun->header->table->col[fun->bin[1]].name);
fun->dims = 2;
break;
}
fun->bincols=xstrdup(tbuf);
/* make sure these keys have valid axis lengths associated with them */
/* first look for TLMAX (and perhaps TLMIN) */
if( got & 1 ){
fun->max1 = ft_headgetr(fun->header, "TLMAX", fun->bin[0]+1, 0.0, &card);
if( !card ) return 0;
fun->min1 = ft_headgetr(fun->header, "TLMIN", fun->bin[0]+1, 1.0, &card);
fun->binsiz1 = ft_headgetr(fun->header, "TDBIN", fun->bin[0]+1, 1.0,&card);
fun->dim1 = tldim(fun->min1, fun->max1, fun->binsiz1,
fun->header->table->col[fun->bin[0]].type);
}
if( got & 2 ){
fun->max2 = ft_headgetr(fun->header, "TLMAX", fun->bin[1]+1, 0.0, &card);
if( !card ) return 0;
fun->min2 = ft_headgetr(fun->header, "TLMIN", fun->bin[1]+1, 1.0, &card);
fun->binsiz2 = ft_headgetr(fun->header, "TDBIN", fun->bin[1]+1, 1.0,&card);
fun->dim2 = tldim(fun->min2, fun->max2, fun->binsiz2,
fun->header->table->col[fun->bin[1]].type);
}
return 1;
error:
freedtable();
return 0;
}
/*
*
* _FunTableValCol -- get value table column for binning
*
*/
#ifdef ANSI_FUNC
int
_FunTableValCol(Fun fun, char *tail, char *env)
#else
int _FunTableValCol(fun, tail, env)
Fun fun;
char *tail;
char *env;
#endif
{
int i;
int got;
int ip=0;
char *k=NULL;
char *v=NULL;
char key[SZ_LINE];
char tbuf[SZ_LINE];
char valstr[SZ_LINE];
/* initialize */
*key = '\0';
/* set to impossible value */
fun->vbin = -1;
/* look in the extension for value column specification */
if( _FunKeyword(tail, "vcol", env, tbuf, SZ_LINE) ) strcpy(key, tbuf);
if( !*key ) return 0;
/* prepare to parse the bincol specifier */
newdtable(",)");
k = key;
/* point past first paren */
while( (*k == '(') || (*k == '"') ) k++;
/* look for vcol specifier */
got=word(k, valstr, &ip);
freedtable();
if( !got ) return 0;
/* look for operator before the name */
v = valstr;
if( *valstr == '/' ){
fun->vop = '/';
v++;
}
/* look among columns for this column name */
for(i=0, got=0; i<fun->header->table->tfields; i++){
if( !fun->header->table->col[i].name ) continue;
if( !strcasecmp(fun->header->table->col[i].name, v) ){
/* save the value column number */
fun->vbin = i;
got++;
break;
}
}
return got;
}
/*
*
* FunRawEvHeader -- read a string that details the structure
* of the event record and generate a fitsy header
*
*/
#ifdef ANSI_FUNC
FITSHead
_FunRawEvHeader(Fun fun, char *iname, char *iext, char *eventdef)
#else
FITSHead _FunRawEvHeader(fun, iname, iext, eventdef)
Fun fun;
char *iname;
char *iext;
char *eventdef;
#endif
{
char tbuf[SZ_LINE];
char *s;
char *neventdef=NULL;
char **names=NULL;
char **types=NULL;
char *extname="EVENTS";
int extver=1;
int width=0;
int ncol=0;
int got;
int i, r;
int total;
int skip;
int type;
int dim, scaled;
int xtype, xoff;
int *dims=NULL;
int *scaleds=NULL;
int *widths=NULL;
double tlmin, tlmax, binsiz, tscale, tzero;
double *tlmins=NULL, *tlmaxs=NULL, *binsizs=NULL;
double *tscales=NULL, *tzeros=NULL;
FITSHead header=NULL;
struct stat buf;
/* make sure we have some columns */
if( !eventdef || !*eventdef ){
gerror(stderr, "Event definition is empty\n");
goto done;
}
/* init the fitsy header */
header = ft_headinit(NULL, 0);
/* get rid of enclosing parens */
if(*eventdef == '('){
neventdef = xstrdup(eventdef+1);
i = strlen(neventdef);
if( neventdef[i-1] == ')' )
neventdef[i-1] = '\0';
}
/* get rid of enclosing quotes */
else if( (*eventdef == '"') || (*eventdef == '\'') ){
neventdef = xstrdup(eventdef+1);
i = strlen(neventdef);
if( neventdef[i-1] == *eventdef )
neventdef[i-1] = '\0';
}
else{
neventdef = xstrdup(eventdef);
}
/* we only deal with upper case in FITS */
cluc(neventdef);
/* count the number of columns, separated by ',' */
for(ncol=0, s=neventdef; *s; s++){
if( *s == ',' ) ncol++;
}
/* last column had a null after it */
ncol++;
/* allocate string space for each column */
names = (char **)xcalloc(ncol, sizeof(char *));
types = (char **)xcalloc(ncol, sizeof(char *));
dims = (int *)xcalloc(ncol, sizeof(int));
scaleds = (int *)xcalloc(ncol, sizeof(int));
tlmins = (double *)xcalloc(ncol, sizeof(double));
tlmaxs = (double *)xcalloc(ncol, sizeof(double));
binsizs = (double *)xcalloc(ncol, sizeof(double));
tscales = (double *)xcalloc(ncol, sizeof(double));
tzeros = (double *)xcalloc(ncol, sizeof(double));
widths = (int *)xcalloc(ncol, sizeof(int));
/* process the string and gather up the information on each column */
s = neventdef;
for(got=0; got<ncol; got++){
/* get name */
for(i=0; (i < SZ_LINE-1) && *s && (*s != ':'); i++, s++){
tbuf[i] = *s;
tbuf[i+1] = '\0';
}
names[got] = xstrdup(tbuf);
/* skip delim */
if( *s == ':' ) s++;
/* make sure we have something */
if( *s == '\0' ) break;
/* get column specification up to next comma */
for(i=0; (i < SZ_LINE-1) && *s && (*s != ','); i++, s++){
tbuf[i] = *s;
tbuf[i+1] = '\0';
}
/* parse values for various column parameters */
_FunColumnType(tbuf, &type, &r, &tlmin, &tlmax, &binsiz, &dim,
&tscale, &tzero, &scaled, &xtype, &xoff);
/* save info for this column */
snprintf(tbuf, SZ_LINE-1, "%d%c", r, type);
types[got] = xstrdup(tbuf);
tlmins[got] = tlmin;
tlmaxs[got] = tlmax;
binsizs[got] = binsiz;
dims[got] = dim;
tscales[got] = tscale;
tzeros[got] = tzero;
scaleds[got] = scaled;
widths[got] = ft_sizeof(type);
/* add to total width */
if( type == 'X' )
width += ((widths[got]*r) + 7 ) / 8;
else
width += widths[got] * r;
/* bump past the comma */
if( *s == ',' ) s++;
}
/* make sure we have some columns */
if( width == 0 ){
gerror(stderr, "Table width is zero\n");
goto done;
}
/* get the size of the file and from this, the number of events */
if( !iname || !*iname ||
!strcasecmp(iname, "stdin") || (stat(iname, &buf) <0) ){
total = -1;
}
else{
if( fun == NULL )
skip = 0;
else
skip = fun->skip;
total = (buf.st_size - skip)/width;
}
/* check for monotonically desceasing widths */
if( _FunKeyword(iext, "align", "EVENTS_ALIGN", tbuf, SZ_LINE) &&
istrue(tbuf) ){
for(i=1; i<got; i++){
if(widths[i] > widths[i-1]){
gwarning(stderr,
"event alignment warning: %s (%d) follows %s (%d)\n",
names[i], widths[i], names[i-1], widths[i-1]);
}
}
}
/* fake the header to a binary table */
ft_headsets(header, "XTENSION", 0, "BINTABLE", "FITS BINARY TABLE", 1);
ft_headseti(header, "BITPIX", 0, 8, "Binary data", 1);
ft_headseti(header, "NAXIS", 0, 2, "Table is a matrix", 1);
ft_headseti(header, "NAXIS", 1, width, "Width of table in bytes", 1);
ft_headseti(header, "NAXIS", 2, total, "Number of entries in table", 1);
ft_headseti(header, "PCOUNT", 0, 0, "Random parameter count", 1);
ft_headseti(header, "GCOUNT", 0, 1, "Group count", 1);
ft_headseti(header, "TFIELDS", 0, got, "Number of fields in each row", 1);
ft_headsets(header, "EXTNAME", 0, extname, "Table name", 1);
ft_headseti(header, "EXTVER", 0, extver, "Version number of table", 1);
/* info for each column */
for(i=0; i<got; i++){
ft_headsets(header, "TFORM", i+1, types[i], "Data type for field", 1);
ft_headsets(header, "TTYPE", i+1, names[i], "Label for field", 1);
if( dims[i] ){
if( (tlmins[i] == (int)tlmins[i]) && (tlmaxs[i] == (int)tlmaxs[i]) ){
ft_headseti(header, "TLMIN", i+1, (int)tlmins[i],
"Min. axis value", 1);
ft_headseti(header, "TLMAX", i+1, (int)tlmaxs[i],
"Max. axis value", 1);
}
else{
ft_headsetr(header, "TLMIN", i+1, tlmins[i], 7, "Min. axis value", 1);
ft_headsetr(header, "TLMAX", i+1, tlmaxs[i], 7, "Max. axis value", 1);
}
}
if( binsizs[i] != 1.0 ){
ft_headsetr(header, "TDBIN", i+1, binsizs[i], 7, "Bin size", 1);
}
if( scaleds[i] ){
ft_headsetr(header, "TSCAL", i+1, tscales[i], 7,
"phys_val = tzero + tscale * field_val", 1);
ft_headsetr(header, "TZERO", i+1, tzeros[i], 7,
"phys_val = tzero + tscale * field_val", 1);
}
}
/* get size of record and number of records */
fun->rawsize = width;
fun->total = total;
fun->left = fun->total;
/* now turn this into a table header */
ft_syncdata(header);
done:
/* free up the column strings */
for(i=0; i<ncol; i++){
if( names[i] ) xfree(names[i]);
if( types[i] ) xfree(types[i]);
}
if( names ) xfree(names);
if( types ) xfree(types);
if( dims ) xfree(dims);
if( tlmins ) xfree(tlmins);
if( tlmaxs ) xfree(tlmaxs);
if( binsizs ) xfree(binsizs);
if( scaleds ) xfree(scaleds);
if( tscales ) xfree(tscales);
if( tzeros ) xfree(tzeros);
if( widths ) xfree(widths);
if( neventdef ) xfree(neventdef);
return header;
}
/*
*
* _FunImageSkip -- caclulcate the number of bytes to skip to get
* to specified image plane of an N-dimensional image
*
*/
#ifdef ANSI_FUNC
off_t
_FunImageSkip(Fun fun, char *tail)
#else
off_t _FunImageSkip(fun, tail)
Fun fun;
char *tail;
#endif
{
int i,j,k;
int naxes;
int plane;
int planes[8];
int skip;
off_t total;
char tbuf[SZ_LINE];
char *s, *t;
/* nothing to skip yet */
total = 0;
/* nothing to do if its not an n-D image */
if( (naxes=ft_naxes(fun->header)) <= 2 )
return total;
/* look for a bracket specification */
if( !_FunKeyword(tail, "plane", NULL, tbuf, SZ_LINE) )
return 0;
else
s = tbuf;
/* skip open parens */
if( *s == '(' )
s++;
planes[1] = ft_naxis(fun->header, 1);
planes[2] = ft_naxis(fun->header, 2);
/* see the other planes */
for(i=3; i<=7; i++)
planes[i] = 1;
/* we look for a plane specification for each axis > 2 */
for(i=3; i<=naxes; i++){
plane = strtol(s, &t, 10);
if( s == t )
plane = 1;
else if( (plane < 1) || (plane > ft_naxis(fun->header, i)) )
return -1;
/* save the image plane desired for this dimension */
planes[i] = plane;
/* point past delimiter */
if( *t == ':' )
t++;
/* see if we ran out of running room */
if( (*t == '\0') || (*t == ']') || (*t == ')') )
break;
/* this is where we look next */
s = t;
}
/* skip n-dimensional cubes of various dimensions until we
get to the desired 2d image */
for(j=naxes; j>2; j--){
for(skip=1,k=1; k<j; k++)
skip *= ft_naxis(fun->header, k);
skip *= (planes[j]-1) * (ABS(fun->dtype));
total += skip;
}
return total;
}
#ifdef ANSI_FUNC
Fun
_FunValid(Fun fun)
#else
Fun _FunValid(fun)
Fun fun;
#endif
{
Fun current;
if( !fun ) return NULL;
/* if a current list member is defined, test that one */
if( fun->current )
current = fun->current;
/* else test this one */
else
current = fun;
if( FUN_VALID(current) )
return current;
else
return NULL;
}
/*
*
* _FunFree -- free up a fun record
*
*/
#ifdef ANSI_FUNC
void
_FunFree(Fun fun, int flag)
#else
void _FunFree(fun, flag)
Fun fun;
int flag;
#endif
{
int i;
SaveBuf cur, tcur;
if( fun ){
_FunColumnFree(fun);
if( fun->filter ){
xfree(fun->filter);
fun->filter = NULL;
}
if( fun->rawbuf ){
xfree(fun->rawbuf);
fun->rawbuf = NULL;
}
if( fun->bincols ){
xfree(fun->bincols);
fun->bincols = NULL;
}
if( fun->activate ){
xfree(fun->activate);
fun->activate = NULL;
}
if( fun->header ){
ft_headfree(fun->header, 1);
fun->header = NULL;
}
if( fun->theader ){
ft_headfree(fun->theader, 1);
fun->theader = NULL;
}
if( fun->primary ){
ft_headfree(fun->primary, 1);
fun->primary = NULL;
}
/* close "save buffer" fds */
if( fun->lefp ){
fclose(fun->lefp);
fun->lefp = NULL;
}
if( fun->lrfp ){
fclose(fun->lrfp);
fun->lrfp = NULL;
}
/* free save buffers */
for(cur=fun->save; cur; ){
tcur = cur->next;
if(cur->ebuf ) xfree(cur->ebuf);
if(cur->rbuf ) xfree(cur->rbuf);
if( cur ) xfree(cur);
cur = tcur;
}
fun->save = NULL;
/* close filters, free masks */
if( fun->filt && (fun->filt != NOFILTER) ){
FilterClose(fun->filt);
fun->filt = NULL;
}
if( fun->masks ){
xfree(fun->masks);
fun->masks = NULL;
}
fun->nmask = 0;
/* free up text parsers */
if( fun->parsers ){
for(i=0; i<fun->nparser; i++){
if( fun->parsers[i] ) ParseFree(fun->parsers[i]);
}
xfree(fun->parsers);
fun->parsers = NULL;
}
/* free up view info */
if( fun->vcols ){
xfree(fun->vcols);
fun->vcols = NULL;
}
if( fun->vfmt ){
xfree(fun->vfmt);
fun->vfmt = NULL;
}
/* if flag is true, we free up all space
otherwise, its assumed we will do some more writing */
if( flag ){
if( fun->fname ) xfree(fun->fname);
if( fun->mode ) xfree(fun->mode);
if( fun->wcs ) wcsfree(fun->wcs);
if( fun->wcs0 ) wcsfree(fun->wcs0);
/* clear the magic flag as a last resort */
fun->magic = 0;
xfree(fun);
}
else{
fun->type = 0;
fun->overflow = 0;
fun->rowsize = 0;
fun->rawsize = 0;
fun->total = 0;
fun->left = 0;
fun->io = 0;
fun->bytes = 0;
fun->rawbufsize = 0;
/* re-init header for temp variables for next extension */
fun->theader = ft_headinit(NULL, 0);
}
}
}
/*
*
* _FunImageSize -- calculate the size of the image, including padding
*
*/
#ifdef ANSI_FUNC
int
_FunImageSize(Fun fun)
#else
int _FunImageSize(fun)
Fun fun;
#endif
{
/* get data type code (which is abs(length)) */
fun->dtype = fun->bitpix / FT_WORDLEN;
/* this is the length of the image, without padding */
fun->dlen = fun->dim1 * fun->dim2 * ABS(fun->dtype);
/* determine the padding */
if( (fun->dpad = FT_BLOCK - (fun->dlen % FT_BLOCK)) == FT_BLOCK )
fun->dpad = 0;
return fun->dlen;
}
/*
*
* _FunMaxBufSize -- calculate the size of the image, including padding
*
*/
#ifdef ANSI_FUNC
int
_FunMaxBufSize(Fun fun, char *tail)
#else
int _FunMaxBufSize(fun, tail)
Fun fun;
char *tail;
#endif
{
char tbuf[SZ_LINE];
fun->maxbufsize = 0;
if( _FunKeyword(tail, "maxbufsize", "FUN_MAXBUFSIZE", tbuf, SZ_LINE) )
fun->maxbufsize = atoi(tbuf);
if( fun->maxbufsize <= 0 )
fun->maxbufsize = FUN_MAXBUFSIZE;
return(fun->maxbufsize);
}
/*
*
* _FunOpenCommon -- common code for different Fun open routines
*
*/
#ifdef ANSI_FUNC