subcommand: Improve formatting of command list.

[gsu.git] / subcommand

diff --git a/subcommand b/subcommand
index e5c0001e4903299e8e9e4f430a03373fd18b0e5a..817486dba0c43564701095b49f2069498da9ee6b 100644 (file)
--- a/subcommand
+++ b/subcommand
@@ -168,20 +168,25 @@ gsu_getopts()
 _gsu_print_available_commands()
 {
        local cmd cmds
-       local -i count=0
+       local -i maxlen=0 cols width=80 count=0
 
+       result=$(stty size 2>/dev/null)
+       if (($? == 0)); then
+               gsu_is_a_number "${result#* }"
+               ((ret >= 0)) && ((result > 0)) && width=$result
+       fi
        _gsu_available_commands
-       cmds="$result"
-       printf 'Available commands:\n'
+       cmds=$result
+       for cmd in $cmds; do
+               ((${#cmd} > maxlen)) && maxlen=${#cmd}
+       done
+       let maxlen++
+       ((width < maxlen)) && cols=1 || cols=$((width / maxlen))
+       printf 'Available commands:'
        for cmd in $cmds; do
-               printf '%s' "$cmd"
+               ((count % cols == 0)) && printf '\n'
+               printf '%-*s' $maxlen $cmd
                let ++count
-               if ((count % 4)); then
-                       printf '\t'
-                       ((${#cmd} < 8)) && printf '\t'
-               else
-                       printf '\n'
-               fi
        done
        printf '\n'
 }