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# Shrink directory paths, e.g. /home/me/foo/bar/quux -> ~/f/b/quux.## For a fish-style working directory in your command prompt, add the following# to your theme or zshrc:## setopt prompt_subst# PS1='%n@%m $(shrink_path -f)>'## The following options are available:## -f, --fish fish simulation, equivalent to -l -s -t.# -g, --glob Add asterisk to allow globbing of shrunk path (equivalent to -e "*")# -l, --last Print the last directory's full name.# -s, --short Truncate directory names to the number of characters given by -#. Without# -s, names are truncated without making them ambiguous.# -t, --tilde Substitute ~ for the home directory.# -T, --nameddirs Substitute named directories as well.# -# Truncate each directly to at least this many characters inclusive of the# ellipsis character(s) (defaulting to 1).# -e SYMBOL Postfix symbol(s) to indicate that a directory name had been truncated.# -q, --quote Quote special characters in the shrunk path## The long options can also be set via zstyle, like# zstyle :prompt:shrink_path fish yes## Note: Directory names containing two or more consecutive spaces are not yet# supported.## Keywords: prompt directory truncate shrink collapse fish## Copyright (C) 2008 by Daniel Friesel <derf@xxxxxxxxxxxxxxxxxx># License: WTFPL <http://www.wtfpl.net>## Ref: https://www.zsh.org/mla/workers/2009/msg00415.html# https://www.zsh.org/mla/workers/2009/msg00419.html
shrink_path () { setopt localoptions setopt rc_quotes null_glob
typeset -i lastfull=0 typeset -i short=0 typeset -i tilde=0 typeset -i named=0 typeset -i length=1 typeset ellipsis="" typeset -i quote=0 typeset -i expand=0
if zstyle -t ':prompt:shrink_path' fish; then lastfull=1 short=1 tilde=1 fi if zstyle -t ':prompt:shrink_path' nameddirs; then tilde=1 named=1 fi zstyle -t ':prompt:shrink_path' last && lastfull=1 zstyle -t ':prompt:shrink_path' short && short=1 zstyle -t ':prompt:shrink_path' tilde && tilde=1 zstyle -t ':prompt:shrink_path' glob && ellipsis='*' zstyle -t ':prompt:shrink_path' quote && quote=1 zstyle -t ':prompt:shrink_path' expand && expand=1
while [[ $1 == -* ]]; do case $1 in --) shift break ;; -f|--fish) lastfull=1 short=1 tilde=1 ;; -h|--help) print 'Usage: shrink_path [-f -l -s -t] [directory]' print ' -f, --fish fish-simulation, like -l -s -t' print ' -g, --glob Add asterisk to allow globbing of shrunk path (equivalent to -e "*")' print ' -l, --last Print the last directory''s full name' print ' -s, --short Truncate directory names to the number of characters given by -#. Without' print ' -s, names are truncated without making them ambiguous.' print ' -t, --tilde Substitute ~ for the home directory' print ' -T, --nameddirs Substitute named directories as well' print ' -# Truncate each directly to at least this many characters inclusive of the' print ' ellipsis character(s) (defaulting to 1).' print ' -e SYMBOL Postfix symbol(s) to indicate that a directory name had been truncated.' print ' -q, --quote Quote special characters in the shrunk path' print ' -x, --expand Print the full path. This takes precedence over the other options' print '' print 'The long options can also be set via zstyle, like' print ' zstyle :prompt:shrink_path fish yes' return 0 ;; -l|--last) lastfull=1 ;; -s|--short) short=1 ;; -t|--tilde) tilde=1 ;; -T|--nameddirs) tilde=1 named=1 ;; -[0-9]|-[0-9][0-9]) length=${1/-/} ;; -e) shift ellipsis="$1" ;; -g|--glob) ellipsis='*' ;; -q|--quote) quote=1 ;; -x|--expand) expand=1 ;; esac shift done
typeset -i elllen=${#ellipsis} typeset -a tree expn typeset result part dir=${1-$PWD} typeset -i i
[[ -d $dir ]] || return 0
if (( expand )) { echo "$dir" return 0 }
if (( named )) { for part in ${(k)nameddirs}; { [[ $dir == ${nameddirs[$part]}(/*|) ]] && dir=${dir/#${nameddirs[$part]}/\~$part} } } (( tilde )) && dir=${dir/#$HOME/\~} tree=(${(s:/:)dir}) ( if [[ $tree[1] == \~* ]] { cd -q ${~tree[1]} result=$tree[1] shift tree } else { cd -q / } for dir in $tree; { if (( lastfull && $#tree == 1 )) { result+="/$tree" break } expn=(a b) part='' i=0 until [[ $i -gt 99 || ( $i -ge $((length - ellen)) || $dir == $part ) && ( (( ${#expn} == 1 )) || $dir = $expn ) ]]; do (( i++ )) part+=$dir[$i] expn=($(echo ${part}*(-/))) (( short )) && [[ $i -ge $((length - ellen)) ]] && break done
typeset -i dif=$(( ${#dir} - ${#part} - ellen )) if [[ $dif -gt 0 ]] then (( quote )) && part=${(q)part} part+="$ellipsis" else part="$dir" (( quote )) && part=${(q)part} fi result+="/$part" cd -q $dir shift tree } echo ${result:-/} )}
## vim:ft=zsh
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