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Fits kernel notes / unresolved issues
----------------------------------------------------------------------------
Extraneous env variables - put in fkinit
ENV_DEFIMTYPE "imtype"
ENV_FITSCACHE "fitscache"
Rename
minhdrlns
Cache
hard upper limit - is this a restriction?
convert from common to dynamic descriptor
referenced: open delete rename rfits updhdr
Extensions
should not use imtype to set extension (this is copied from STF which
also has the same problem)
Defaults / ksection / fkinit
should overwrite be allowed in fkinit? (fxfopen)
check on file clobber
----------------------------------------------------------------------------
Extension, default image type
imtype
The purpose of imtype is to control the types of images automatically
created by the system if no image extension is specified.
new image - determines default image type
new copy - determines default image type if noinherit
no extn - up to kernel whether this is legal
imtype = [(oif|fxf|plf|qpf|stf) | <any-valid-extn>] [[no]inherit]
save format codes ("oif" etc) in driver descriptors
extensions are mapped to drivers using imextn
imextn
map file extensions to image type (kernel)
default extension for new images of a given type
imextn = "oif:imh stf:hhh,??h fits:,fits,fit
or possibly imextn = "imh:oif hhh,??h:stf fits,fit:fit
kernels: oif fxf plf qpf stf
iki_extninit (imtype, def_imtype, imextn, def_imextn)
iki_validextn (kernel, extn)
status = iki_getextn (kernel, index, extn, maxch)
Initialize extension processing stuff at iki_init time - only once when
the process starts up.
nextn
{ kernel extn patbuf }
sbuf, sbufused
defimtype
inherit
IKI - add kernel arg to:
access
copy
delete
open
rename
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