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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <imhdr.h>
include <imio.h>
include "fxf.h"
# FXF_GETHDREXTN -- Get the default header file extension.
procedure fxf_gethdrextn (im, o_im, acmode, outstr, maxch)
pointer im, o_im #I image descriptors
int acmode #I image access mode
char outstr[ARB] #O receives header extension
int maxch #I max chars out
bool inherit
int kernel, old_kernel
int fnextn(), iki_getextn(), iki_getpar()
begin
# Use the same extension as the input file if this is a new copy
# image of the same type as the input and inherit is enabled.
# If we have to get the extension using iki_getextn, the default
# extension for a new image is the first extension defined (index=1).
kernel = IM_KERNEL(im)
old_kernel = 0
if (acmode == NEW_COPY && o_im != NULL)
old_kernel = IM_KERNEL(o_im)
inherit = (iki_getpar ("inherit") == YES)
if (inherit && acmode == NEW_COPY && kernel == old_kernel) {
if (fnextn (IM_HDRFILE(im), outstr, maxch) <= 0)
call strcpy (DEF_HDREXTN, outstr, maxch)
} else if (iki_getextn (kernel, 1, outstr, maxch) < 0)
call strcpy (DEF_HDREXTN, outstr, maxch)
end
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