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#autoload
# Offer a list of baud-rates. Usage:
#
# _baudrate [OPTION(s)...]
#
# Available options:
#
# -u LIMIT Upper limit. LIMIT is the maximum value the offered list
# will contain, if the complete list includes LIMIT exactly.
#
# -l LIMIT Lower limit. Like -u but for the lower boundary.
#
# -f FUNCTION If given FUNCION is used as a predicate to filter the
# value in the complete list to generate an arbitrary
# sub-set.
#
# -t TAG Use TAG as the tag value in _wanted call.
#
# -d DESC Use DESC as the description value in _wanted call.
#
# The default complete list of available baud rates is also configurable via
# the 'baud-rates' style:
#
# zstyle ':completion:*' baud-rates 23 42 666
#
# It is also possible to override the arguments to -f, -u and -l via styles in
# a similar fashion:
#
# zstyle ':completion:*:*:screen:*' max-baud-rate 9600
# zstyle ':completion:*:*:screen:*' min-baud-rate 1200
# zstyle ':completion:*:*:screen:*' baud-rate-filter some_function_name
local -A opts
local expl tag desc tmp
local -a rates
zparseopts -E -A opts u: l: f: d: t:
# The following uses a generated list; first find out where the B* macros are
# defined:
#
# grep -r B115200 /usr/include
#
# Then generate the actual list:
#
# sed -ne '/^[ \t]*#define[ \t]*B[0-9][0-9]*/s,^.*B\([0-9][0-9]*\).*,\1,p' \
# < /usr/include/asm-generic/termbits.h
#
# This one was generated on a Debian Stretch system, leaving out the "0" rate,
# which is synonymous to "hang-up".
zstyle -a ":completion:${curcontext}:" baud-rates rates ||
rates=( 50 75 110 134 150 200 300 600
1200 1800 2400 4800 9600
19200 38400 57600
115200 230400 460800 500000 576000 921600
1000000 1152000 1500000 2000000 2500000 3000000 3500000 4000000 )
zstyle -s ":completion:${curcontext}:" max-baud-rate tmp && opts[-u]=$tmp
zstyle -s ":completion:${curcontext}:" min-baud-rate tmp && opts[-l]=$tmp
zstyle -s ":completion:${curcontext}:" baud-rate-filter tmp && opts[-f]=$tmp
if (( ${+opts[-u]} )) || (( ${+opts[-l]} )); then
local -i min max
min=${opts[-l]:-0}
max=${opts[-u]:-${${(On)rates}[1]}}
rates=( ${(M)rates:#${~:-<$min-$max>}} )
fi
if (( ${+opts[-f]} )); then
set -- $rates
rates=( )
for item; do
${opts[-f]} $item && rates+=( $item )
done
fi
tag=${opts[-t]:-baud-rate}
desc=${opts[-d]:-baud rate}
# -1V removes dupes (which there shouldn't be) and otherwise leaves the
# order in the $rates array intact.
_wanted -1V $tag expl $desc compadd -a $expl -- rates
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