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function abbr --description "Manage abbreviations"
# parse arguments
set -l mode
set -l mode_flag # the flag that was specified, for better errors
set -l mode_arg
set -l needs_arg no
while set -q argv[1]
if test $needs_arg = single
set mode_arg $argv[1]
set needs_arg no
else if test $needs_arg = coalesce
set mode_arg "$argv"
set needs_arg no
set -e argv
else
set -l new_mode
switch $argv[1]
case '-h' '--help'
__fish_print_help abbr
return 0
case '-a' '--add'
set new_mode add
set needs_arg coalesce
case '-e' '--erase'
set new_mode erase
set needs_arg single
case '-l' '--list'
set new_mode list
case '-s' '--show'
set new_mode show
case '--'
set -e argv[1]
break
case '-*'
printf ( _ "%s: invalid option -- %s\n" ) abbr $argv[1] >&2
return 1
case '*'
break
end
if test -n "$mode" -a -n "$new_mode"
# we're trying to set two different modes
printf ( _ "%s: %s cannot be specified along with %s\n" ) abbr $argv[1] $mode_flag >&2
return 1
end
set mode $new_mode
set mode_flag $argv[1]
end
set -e argv[1]
end
if test $needs_arg != no
printf ( _ "%s: option requires an argument -- %s\n" ) abbr $mode_flag >&2
return 1
end
# If run with no options, treat it like --add if we have an argument, or
# --show if we do not have an argument
if test -z "$mode"
if set -q argv[1]
set mode 'add'
set mode_arg "$argv"
set -e argv
else
set mode 'show'
end
end
# none of our modes want any excess arguments
if set -q argv[1]
printf ( _ "%s: Unexpected argument -- %s\n" ) abbr $argv[1] >&2
return 1
end
switch $mode
case 'add'
# Bail out early if the exact abbr is already in
# This depends on the separator staying the same, but that's the common case (config.fish)
contains -- $mode_arg $fish_user_abbreviations; and return 0
set -l key
set -l value
set -l kv (__fish_abbr_split $mode_arg)
set key $kv[1]
set value $kv[2]
# ensure the key contains at least one non-space character
if not string match -qr "\w" -- $key
printf ( _ "%s: abbreviation must have a non-empty key\n" ) abbr >&2
return 1
end
if not string match -qr "\w" -- $value
printf ( _ "%s: abbreviation must have a value\n" ) abbr >&2
return 1
end
if set -l idx (__fish_abbr_get_by_key $key)
# erase the existing abbreviation
set -e fish_user_abbreviations[$idx]
end
if not set -q fish_user_abbreviations
# initialize as a universal variable, so we can skip the -U later
# and therefore work properly if someone sets this as a global variable
set -U fish_user_abbreviations
end
set fish_user_abbreviations $fish_user_abbreviations $mode_arg
return 0
case 'erase'
set -l key (__fish_abbr_split $mode_arg)[1]
if set -l idx (__fish_abbr_get_by_key $key)
set -e fish_user_abbreviations[$idx]
return 0
else
printf ( _ "%s: no such abbreviation '%s'\n" ) abbr $key >&2
return 2
end
case 'show'
for i in $fish_user_abbreviations
set -l kv (__fish_abbr_split $i)
set -l key $kv[1]
set -l value $kv[2]
# Check to see if either key or value has a leading dash
# If so, we need to write --
string match -q -- '-*' $key $value; and set -l opt_double_dash '--'
echo abbr $opt_double_dash (string escape -- $key $value)
end
return 0
case 'list'
for i in $fish_user_abbreviations
set -l key (__fish_abbr_split $i)[1]
printf "%s\n" $key
end
return 0
end
end
function __fish_abbr_get_by_key
if not set -q argv[1]
echo "__fish_abbr_get_by_key: expected one argument, got none" >&2
return 2
end
# Going through all entries is still quicker than calling `seq`
set -l keys
for kv in $fish_user_abbreviations
if string match -qr '^[^ ]+=' -- $kv
# No need for bounds-checking because we already matched before
set keys $keys (string split "=" -m 1 -- $kv)[1]
else if string match -qr '^[^ ]+ .*' -- $kv
set keys $keys (string split " " -m 1 -- $kv)[1]
end
end
if set -l idx (contains -i -- $argv[1] $keys)
echo $idx
return 0
end
return 1
end
function __fish_abbr_split -a input
if string match -qr '^[^ ]+=' -- $input
string split "=" -m 1 -- $input
else if string match -qr '^[^ ]+ .*' -- $input
string split " " -m 1 -- $input
else
echo $input
end
end
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