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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <syserr.h>
include <ctype.h>
include "idb.h"
# IMGATR -- Get the attribute fields (type code and comment) of a header
# keyword. A separate, normally typed, call is required to get the keyword
# value.
procedure imgatr (im, key, dtype, comm, maxch)
pointer im # image descriptor
char key[ARB] # parameter to be returned
int dtype # receives datatype code
char comm[ARB] # output string to comment field
int maxch
int op
pointer rp, ip
int idb_getstring(), idb_findrecord(), imgftype()
errchk syserrs, imgftype
begin
# Get the field datatype.
dtype = imgftype (im, key)
# Check for a standard header parameter first.
if (idb_getstring (im, key, comm, maxch) != ERR) {
comm[1] = EOS
return
}
# Find the record.
if (idb_findrecord (im, key, rp) == 0)
call syserrs (SYS_IDBKEYNF, key)
# Extract the comment field.
for (ip=rp+IDB_ENDVALUE; Memc[ip] != '/' && Memc[ip] != '\n'; ip=ip+1)
;
if (Memc[ip] == '/') {
for (ip=ip+1; IS_WHITE(Memc[ip]); ip=ip+1)
;
for (op=1; Memc[ip] != '\n'; ip=ip+1) {
comm[op] = Memc[ip]
op = op + 1
}
comm[op] = EOS
} else
comm[1] = EOS
end
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