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git://git.code.sf.net/p/zsh/code
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77 lines
2.1 KiB
Plaintext
77 lines
2.1 KiB
Plaintext
#autoload
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# This builds a display-list for the `-y' option of `compadd' and
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# `compgen' out of the arguments it gets. The first argument is
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# taken as the name of a parameter and the string built is stored
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# into it.
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# The second argument is the name of an array whose elements each
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# contains a string to complete, optionally followed by a colon
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# and a description. The display list created will contain one
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# line per string with the description after it, all nicely
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# aligned. Strings without descriptions are put at the end in a
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# column-oriented fashion.
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# All arguments after the second one are given as arguments to
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# `compadd'.
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# This function will also do the matching required to find out
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# which strings will be included in the list. All elements that
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# don't match will be removed from the array. This means that the
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# special parameters `PREFI' and `SUFFIX' have to be set up
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# correctly before this function is called.
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local _param="$1" _arr _len _i _tmp _simple
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# Remove all descriptions not matched by the string on the line.
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if [[ "${2[1]}" = \( ]]; then
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_arr=( ${(o)=2[2,-2]} )
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else
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_arr=( "${(@Po)2}" )
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fi
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compadd -D _arr "${(@)argv[3,-1]}" - "${(@)_arr%%:*}"
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[[ "${2[1]}" != \( ]] && eval "${2}=( \"\$_arr[@]\" )"
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if (( $#_arr )); then
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# There are strings left, first get the length of the longest of
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# them (to be able to align them) and collect all strings without
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# descriptions.
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_simple=()
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_len=1
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for _i in "$_arr[@]"; do
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_tmp="${#_i%%:*}"
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if [[ "$_i" = *:?* ]]; then
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[[ _tmp -gt _len ]] && _len="$_tmp"
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else
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_simple=( "$_simple[@]" "${_i%:}" )
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fi
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done
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# Now we build the list in `_tmp', adding one line per string.
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_tmp=''
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for _i in "$_arr[@]"; do
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[[ "$_i" = *:?* ]] && _tmp="$_tmp
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${(r:_len:: :)_i%%:*} -- ${_i#*:}"
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done
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# If there were strings without descriptions, we just add them by
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# calling `print -c'.
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(( $#_simple )) && _tmp="${_tmp}
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$(print -c - $_simple)"
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eval "${_param}=${(q)_tmp[2,-1]}"
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return 0
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else
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# None of the strings matches what's on the line, signal this by
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# setting the parameter to an empty string and by the return value.
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eval "${_param}=''"
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return 1
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fi
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