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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <ctype.h>
include <imhdr.h>
include "idb.h"
define TY_STRING (-1)
# IDB_GETSTRING -- Get the string value of a standard header parameter. If the
# actual type of the parameter is not string the value is encoded as a string.
# The length of the string is returned as the function value. ERR is returned
# if the string cannot be found.
int procedure idb_getstring (im, key, outstr, maxch)
pointer im # image descriptor
char key[ARB] # parameter to be returned
char outstr[ARB] # output string to receive parameter value
int maxch
long lval
double dval
int dtype, axis
int gstrcpy(), idb_kwlookup(), idb_naxis(), ltoc(), dtoc()
define encode_ 91
begin
# The keywords "naxis1", "naxis2", etc. are treated as a special case.
if (idb_naxis (key, axis) == YES)
if (axis > 0) {
dtype = TY_LONG
lval = IM_LEN(im,axis)
goto encode_
}
switch (idb_kwlookup (key)) {
case I_CTIME:
dtype = TY_LONG
lval = IM_CTIME(im)
case I_LIMTIME:
dtype = TY_LONG
lval = IM_LIMTIME(im)
case I_MAXPIXVAL:
dtype = TY_REAL
if (IS_INDEFR (IM_MAX(im)))
dval = INDEFD
else
dval = IM_MAX(im)
case I_MINPIXVAL:
dtype = TY_REAL
if (IS_INDEFR (IM_MIN(im)))
dval = INDEFD
else
dval = IM_MIN(im)
case I_MTIME:
dtype = TY_LONG
lval = IM_MTIME(im)
case I_NAXIS:
dtype = TY_LONG
lval = IM_NDIM(im)
case I_PIXFILE:
return (gstrcpy (IM_PIXFILE(im), outstr, maxch))
case I_PIXTYPE:
dtype = TY_LONG
lval = IM_PIXTYPE(im)
case I_TITLE:
return (gstrcpy (IM_TITLE(im), outstr, maxch))
default:
outstr[1] = EOS
return (ERR)
}
encode_
if (dtype == TY_LONG)
return (ltoc (lval, outstr, maxch))
else
return (dtoc (dval, outstr, maxch, 15, 'g', maxch))
end
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