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prompt_pwd: Allow keeping components full length

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And allow passing the parameters as options.
This commit is contained in:
Fabian Homborg 2021-04-11 21:31:45 +02:00
parent afef67b4e8
commit 7a8feb4656
2 changed files with 35 additions and 6 deletions
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14
doc_src/cmds/prompt_pwd.rst
View file

@ -17,7 +17,16 @@ Description
``prompt_pwd`` is a function to print the current working directory in a way suitable for prompts. It will replace the home directory with "~" and shorten every path component but the last to a default of one character.
To change the number of characters per path component, set ``$fish_prompt_pwd_dir_length`` to the number of characters. Setting it to 0 or an invalid value will disable shortening entirely.
To change the number of characters per path component, pass ``--dir-length=`` or set ``$fish_prompt_pwd_dir_length`` to the number of characters. Setting it to 0 or an invalid value will disable shortening entirely.
To keep some components unshortened, pass ``--full-length-dirs=`` or set ``$fish_prompt_pwd_full_dirs`` to the number of components.
Options
-------
- ``-h`` or ``--help`` displays the help and exits
- ``-d`` or ``--dir-length=MAX`` causes the components to be shortened to MAX characters each. This overrides $fish_prompt_pwd_dir_length.
- ``-D`` or ``--full-length-dirs=NUM`` keeps NUM components (counted from the right) as full length without shortening. This overrides $fish_prompt_pwd_full_dirs.
Examples
--------
@ -38,3 +47,6 @@ Examples
>_ set -g fish_prompt_pwd_dir_length 3
>_ prompt_pwd
/tmp/ban/sau/wit/mustard
>_ prompt_pwd --full-length-dirs=2 --dir-length=1
/t/b/s/with/mustard

27
share/functions/prompt_pwd.fish
View file

@ -1,5 +1,5 @@
function prompt_pwd --description "Print the current working directory, shortened to fit the prompt"
set -l options h/help
function prompt_pwd --description 'Print the current working directory, shortened to fit the prompt'
set -l options h/help d/dir-length= D/full-length-dirs=
argparse -n prompt_pwd --max-args=0 $options -- $argv
or return
@ -8,18 +8,35 @@ function prompt_pwd --description "Print the current working directory, shortene
return 0
end
# This allows overriding fish_prompt_pwd_dir_length from the outside (global or universal) without leaking it
set -ql _flag_d
and set -l fish_prompt_pwd_dir_length $_flag_d
set -q fish_prompt_pwd_dir_length
or set -l fish_prompt_pwd_dir_length 1
set -l fulldirs 0
set -ql _flag_D
and set fish_prompt_pwd_full_dirs $_flag_D
set -q fish_prompt_pwd_full_dirs
or set -l fish_prompt_pwd_full_dirs 0
# Replace $HOME with "~"
set -l realhome ~
set -l tmp (string replace -r '^'"$realhome"'($|/)' '~$1' $PWD)
if [ $fish_prompt_pwd_dir_length -eq 0 ]
if test "$fish_prompt_pwd_dir_length" -eq 0
echo $tmp
else
# Shorten to at most $fish_prompt_pwd_dir_length characters per directory
string replace -ar '(\.?[^/]{'"$fish_prompt_pwd_dir_length"'})[^/]*/' '$1/' $tmp
# with full-length-dirs components left at full length.
set -l full
if test $fish_prompt_pwd_full_dirs -gt 0
set -l all (string split -m (math $fish_prompt_pwd_full_dirs - 1) -r / $tmp)
set tmp $all[1]
set full $all[2..]
end
string join / (string replace -ar '(\.?[^/]{'"$fish_prompt_pwd_dir_length"'})[^/]*/' '$1/' $tmp) $full
end
end