fish-shell/seq.in

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#!/usr/bin/env fish
2010-09-18 02:18:26 +00:00
#
# Fallback implementation of the seq command
#
# @configure_input@
set -l from 1
set -l step 1
set -l to 1
function _ -d "Alias for the gettext command"
printf "%s" $argv
end
if test 1 = "@HAVE_GETTEXT@"
if which gettext ^/dev/null >/dev/null
function _ -d "Alias for the gettext command"
gettext fish $argv
end
end
end
switch (count $argv)
case 1
set to $argv[1]
case 2
set from $argv[1]
set to $argv[2]
case 3
set from $argv[1]
set step $argv[2]
set to $argv[3]
case '*'
printf (_ "%s: Expected 1, 2 or 3 arguments, got %d\n") seq (count $argv)
exit 1
end
for i in $from $step $to
if not echo $i | grep -E '^-?[0-9]*([0-9]*|\.[0-9]+)$' >/dev/null
printf (_ "%s: '%s' is not a number\n") seq $i
exit 1
end
end
if [ $step -ge 0 ]
echo "for( i=$from; i<=$to ; i+=$step ) i;" | bc
else
echo "for( i=$from; i>=$to ; i+=$step ) i;" | bc
end