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80 lines
2.7 KiB
Text
80 lines
2.7 KiB
Text
#compdef units
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local curcontext="$curcontext" state line expl
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integer ret=1
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typeset -A opt_args
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# Command line completion for Solaris units isn't very useful; this
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# may be standard old-fashioned behaviour. However, it does let you
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# find out the units that are available before running units
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# interactively.
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# GNU options, but these aren't very intrusive for other versions.
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_arguments -C -s -S \
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'(-c --check --check-verbose)'{-c,--check}'[check units are reducible]' \
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'(-c --check)--check-verbose[verbosely check units are reducible]' \
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'(-o --output-format)'{-o,--output-format}'[specify output format]:printf format' \
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'(-f --file)'{-f,--file}'[specify file with units]:units file:_files' \
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'(-m --minus)'{-m,--minus}'[- is subtraction]' \
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'(-p --product)'{-p,--product}'[binary - is product]' \
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'(-q --quiet --silent)'{-q,--quiet,--silent}'[suppress prompts and statistics]' \
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'(-s --strict)'{-s,--strict}'[suppress conversion to reciprocal units]' \
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'(-t --terse)'{-t,--terse}'[make conversion output briefer]' \
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'(-v --verbose)'{-v,--verbose}'[make output more verbose]' \
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'(- *)'{-h,--help}'[show help information and exit]' \
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'(- *)'{-V,--version}'[show version information and exit]' \
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'*:unit expression:->expr' && return 0
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[[ $state = expr ]] || return 1
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# It's very likely there's a quoted expression, since things like '2 seconds'
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# need to be a single argument. Units themselves don't have special
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# characters, so it's safe to take just the characters around the
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# cursor.
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compset -P '*[^[:alnum:]]'
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compset -S '[^[:alnum:]]*'
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# Find the units data.
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local datfile
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local -a testfiles
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testfiles=(
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/usr/share/units.dat # GNU on Fedora
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/usr/share/units/units.dat # on gentoo
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/usr/share/misc/units.dat # on Debian
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/usr/local/share/units.dat # GNU DIY install
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/usr/share/lib/unittab # Solaris
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/usr/share/misc/units.lib # BSD
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)
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datfile=${opt_args[-f]:-${opt_args[--file]}}
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if [[ -z $datfile ]]; then
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for datfile in $testfiles; do
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[[ -f $datfile ]] && break
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done
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fi
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if [[ ! -f $datfile ]]; then
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_message "Data file for units not found."
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return
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fi
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local -a all units pfxs
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# Solaris uses / to start a comment, else #.
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# could cache this, but it's not that big a deal...
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all=($(awk '$1 !~ /^[\/#]/ { print $1 }' $datfile))
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# prefixes end in a -
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pfxs=(${${all:#^[[:alnum:]]##-}%%-})
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# units may include regular or piecewise linear functions
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units=(${${all:#^[[:alnum:]]##([\(\]]*|)}%%\(*})
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if (( ${#units} )); then
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_alternative 'unitprefixes:unit prefix:compadd -S "" -a pfxs' \
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'units:unit:compadd -a units' && ret=0
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# attempt to skip a prefix
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if (( ${#pfxs} )) && compset -P "(${(j.|.)pfxs})"; then
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_wanted units expl unit compadd -a units && ret=0
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fi
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return ret
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else
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_message "No unit definitions found."
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fi
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