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