h/fish-shell
1
Fork 0
mirror of https://github.com/fish-shell/fish-shell.git synced 2026-06-06 00:41:15 -03:00
Code Issues Packages Projects Releases Wiki Activity

functions/seq: use early return

Browse Source 
(cherry picked from commit 425a166111)
This commit is contained in:
Johannes Altmanninger
2025-09-29 11:57:41 +02:00
parent 57753474e4
commit 97dc8f69d9
1 changed files with 56 additions and 54 deletions
Download Patch File Download Diff File Expand all files Collapse all files

110
share/functions/seq.fish
View File

@@ -1,64 +1,66 @@
# If seq is not installed, then define a function that invokes __fish_fallback_seq
# We can't call type here because that also calls seq
if not command -sq seq
if command -sq gseq
# No seq provided by the OS, but GNU coreutils was apparently installed, fantastic
function seq --description "Print sequences of numbers (gseq)"
gseq $argv
end
exit
else
# No seq command
function seq --description "Print sequences of numbers"
__fish_fallback_seq $argv
if command -sq seq
exit
end
if command -sq gseq
# No seq provided by the OS, but GNU coreutils was apparently installed, fantastic
function seq --description "Print sequences of numbers (gseq)"
gseq $argv
end
exit
end
# No seq command
function seq --description "Print sequences of numbers"
__fish_fallback_seq $argv
end
function __fish_fallback_seq --description "Fallback implementation of the seq command"
set -l from 1
set -l step 1
set -l to 1
# Remove a "--" argument if it happens first.
if test "x$argv[1]" = x--
set -e argv[1]
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) >&2
return 1
end
for i in $from $step $to
if not string match -rq -- '^-?[0-9]*([0-9]*|\.[0-9]+)$' $i
printf (_ "%s: '%s' is not a number\n") seq $i >&2
return 1
end
end
function __fish_fallback_seq --description "Fallback implementation of the seq command"
set -l from 1
set -l step 1
set -l to 1
# Remove a "--" argument if it happens first.
if test "x$argv[1]" = x--
set -e argv[1]
if test $step -ge 0
set -l i $from
while test $i -le $to
echo $i
set i (math -- $i + $step)
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) >&2
return 1
end
for i in $from $step $to
if not string match -rq -- '^-?[0-9]*([0-9]*|\.[0-9]+)$' $i
printf (_ "%s: '%s' is not a number\n") seq $i >&2
return 1
end
end
if test $step -ge 0
set -l i $from
while test $i -le $to
echo $i
set i (math -- $i + $step)
end
else
set -l i $from
while test $i -ge $to
echo $i
set i (math -- $i + $step)
end
else
set -l i $from
while test $i -ge $to
echo $i
set i (math -- $i + $step)
end
end
end