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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <syserr.h>
include <ctype.h>
include <pkg/mef.h>
# MEFGETB -- Get an image header parameter of type boolean. False is returned
# if the parameter cannot be found or if the value is not true.
bool procedure mefgetb (mef, key)
pointer mef # image descriptor
char key[ARB] # parameter to be returned
pointer sp, kv, line
int strlen()
bool bval
errchk mef_findkw
begin
call smark (sp)
call salloc (kv, LEN_CARD, TY_CHAR)
call salloc (line, LEN_CARD, TY_CHAR)
call mef_findkw (MEF_HDRP(mef), key, Memc[kv])
if (strlen(Memc[kv]) != 1) {
call sprintf(Memc[line], LEN_CARD, "Invalid boolean value: '%s'")
call pargstr (Memc[kv])
call error (0,Memc[line])
}else
bval = Memc[kv] == 'T'
call sfree (sp)
return (bval)
end
# MEFGETC -- Get an image header parameter of type char.
char procedure mefgetc (mef, key)
pointer mef # image descriptor
char key[ARB] # parameter to be returned
long mefgetl()
begin
return (mefgetl (mef, key))
end
# MEFGETD -- Get an image header parameter of type double floating. If the
# named parameter is a standard parameter return the value directly,
# else scan the user area for the named parameter and decode the value.
double procedure mefgetd (mef, key)
pointer mef # image descriptor
char key[ARB] # parameter to be returned
int ip
double dval
pointer sp, sval
int ctod()
errchk syserrs, mefgstr
begin
call smark (sp)
call salloc (sval, SZ_LINE, TY_CHAR)
ip = 1
call mefgstr (mef, key, Memc[sval], SZ_LINE)
if(Memc[sval]==EOS)
call syserrs (SYS_IDBKEYNF, key)
if (ctod (Memc[sval], ip, dval) == 0)
call syserrs (SYS_IDBTYPE, key)
call sfree (sp)
return (dval)
end
# MEFGETI -- Get an image header parameter of type integer.
int procedure mefgeti (mef, key)
pointer mef # image descriptor
char key[ARB] # parameter to be returned
long lval, mefgetl()
errchk mefgetl
begin
lval = mefgetl (mef, key)
if (IS_INDEFL(lval))
return (INDEFI)
else
return (lval)
end
# MEFGETL -- Get an image header parameter of type long integer.
long procedure mefgetl (mef, key)
pointer mef # image descriptor
char key[ARB] # parameter to be returned
double dval, mefgetd()
errchk mefgetd
begin
dval = mefgetd (mef, key)
if (IS_INDEFD(dval))
return (INDEFL)
else
return (nint (dval))
end
# MEFGETR -- Get an image header parameter of type real.
real procedure mefgetr (mef, key)
pointer mef # image descriptor
char key[ARB] # parameter to be returned
double dval, mefgetd()
errchk mefgetd
begin
dval = mefgetd (mef, key)
if (IS_INDEFD(dval))
return (INDEFR)
else
return (dval)
end
# MEFGETS -- Get an image header parameter of type short integer.
short procedure mefgets (mef, key)
pointer mef # image descriptor
char key[ARB] # parameter to be returned
long lval, mefgetl()
errchk mefgetl
begin
lval = mefgetl (mef, key)
if (IS_INDEFL(lval))
return (INDEFS)
else
return (lval)
end
# MEFGSTR -- Get an image header parameter of type string. If the named
# parameter is a standard parameter return the value directly, else scan
# the user area for the named parameter and decode the value.
procedure mefgstr (mef, key, outstr, maxch)
pointer mef # image descriptor
char key[ARB] # parameter to be returned
char outstr[ARB] # output string to receive parameter value
int maxch
pointer sp, kv
begin
call smark (sp)
call salloc (kv, LEN_CARD, TY_CHAR)
# Find the record.
iferr (call mef_findkw (MEF_HDRP(mef), key, Memc[kv]))
Memc[kv] = EOS
call strcpy (Memc[kv], outstr, min (maxch, LEN_CARD))
call sfree (sp)
end
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