#! /bin/sh
### clf,cls,clf2,cls2 - compressed "ls" and "ls -F" directory listings
### Usage: cmd [dirs]

# To install the program, put it in an executable file named \fIcls\fP.
# Then make three links to it:
#
# % chmod 755 cls
# % ln cls clf
# % ln cls cls2
# % ln cls clf2

# UNCOMMENT THE RIGHT ONE FOR YOUR SYSTEM:
ls='/bin/ls -1'     # BSD
#ls='/bin/ls'       # Sys V

temp=/tmp/CLS$$     # TEMP FILE
umask 077           # MAKE TEMP FILE PRIVATE

# pr PROGRAM: MAKE 5 COLUMNS, NO HEADING, 78 COLUMNS WIDE:
pr='pr -5 -t -w78'

# sed SCRIPT:  IF LINE IS OVER 14 CHARACTERS AND ENDS WITH SYMBOL
# "*", "/", "@", OR "=", TRUNCATE AFTER 12 AND REPLACE WITH >SYMBOL...
# OTHERWISE, IF NAME IS OVER 14 CHARACTERS, TRUNCATE AFTER 13; ADD A >
sed='/[/@*=]$/s/^\(............\)...*\([/@*=][/@*=]*\)$/\1>\2/
s/^\(.............\)...*/\1>/'

case "$0" in
*clf2)  $ls -F ${1+"$@"} | sed -e "$sed" | $pr -l1; exit ;;
*cls2)  $ls ${1+"$@"} | sed -e "$sed" | $pr -l1; exit ;;
*clf)   $ls -F ${1+"$@"} | sed -e "$sed" > $temp ;;
*cls)   $ls ${1+"$@"} | sed -e "$sed" > $temp ;;
*)  echo "$0: Help!  Shouldn't get here!"; exit 1 ;;
esac

# (THESE COMMANDS ONLY DONE BY cls AND clf.)
# LENGTH OF LISTING = ( number of files / 5 ) + 1
$pr -l`expr \( \`wc -l < $temp\` / 5 \) + 1` $temp
rm -f $temp