Nouvelle version...

... beaucoup plus rapide !
Merci à tous :)

#!/bin/bash
## Up is a bash function to simplify vertical file system navigation.
## 
## Copyright (C) 2013 Serge Smeesters
## 
## This program is free software: you can redistribute it
## and/or modify it under the terms of the GNU General Public License
## as published by the Free Software Foundation, either version 3
## of the License, or (at your option) any later version.
## 
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
## See the GNU General Public License for more details.
## 
## You should have received a copy of the GNU General Public License
## along with this program. If not, see http://www.gnu.org/licenses/.
mydir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
[ -d $mydir ] || exit 4
configfile="$mydir/spm_namelength_config.sh"
if [ -f "$configfile" ]
then
 . "$configfile"
else
 echo "No config file find :("
 exit 4
fi
trunc_directory ()
{
 local shortsize
 (( shortsize = sizemax - HASH_SIZE ))
 local PATTERN="" ; for i in `seq 1 $sizemax`; do PATTERN="${PATTERN}?"; done; PATTERN="${PATTERN}*"
 local filefullpathname
 find "$root" -depth -name "$PATTERN" | \
 while read filefullpathname ; do
 local filefullname=$(basename "$filefullpathname")
 local filepath=$(dirname "$filefullpathname")
 local filename=${filefullname%.*}
 local filextension=${filefullname##*.}
 local hashvalue="$(echo "$filename" | md5sum | cut -c1-$HASH_SIZE)"
 echo "--------------------------------"
 echo "↓ $filefullname"
 local filextensionsize=${#filextension}
 if [ $filextensionsize -gt $EXTENTION_MAX_SIZE ] ; then
 local fileshortfullname="$(echo "$filefullname" | cut -c1-$shortsize)$hashvalue"
 else
 local newsize
 (( newsize = shortsize - ( filextensionsize + 1 ) ))
 local fileshortname="$(echo "$filename" | cut -c1-$newsize)$hashvalue"
 local fileshortfullname="$fileshortname.$filextension"
 fi
 echo "→ $fileshortfullname"
 local fileshortfullpathname="$filepath/$fileshortfullname"
 if [ -e "$fileshortfullpathname" ] ; then
 echo "Waw... the shorten file seam to yet exists ! :("
 exit 4
 fi
 pushd "$filepath" >/dev/null
 echo "mv \"$fileshortfullname\" \"$filefullname\"" >> .namelengthrestore
 mv "$filefullname" "$fileshortfullname"
 popd >/dev/null
 done
}
restore_directory ()
{
 local filefullpathname
 find "$root" -depth -type f -name ".namelengthrestore" | \
 while read filefullpathname ; do
 local filepath=$(dirname "$filefullpathname")
 pushd "$filepath" >/dev/null
 cat .namelengthrestore
 . .namelengthrestore
 rm .namelengthrestore
 popd >/dev/null
 done
}
main ()
{
 if [ $# -lt 2 ] ; then
 echo "Less than 2 arguments :("
 exit 1
 fi
 # echo "\2ドル : \"2ドル\""
 local root="$(readlink -f "2ドル")"
 # echo "root : \"$root\""
 if [ ! -d "$root" ] ; then
 echo "\"$root\" don't appear to be a directory :("
 exit 1
 fi
 case "1ドル" in
 trunc)
 if [ $# -lt 3 ] ; then
 echo "Trunc need 2 arguments..."
 exit 2
 fi
 local sizemax="3ドル"
 if [ ! "$sizemax" ] ; then exit 1 ; fi
 local minsizemax
 (( minsizemax = 5 * HASH_SIZE + EXTENTION_MAX_SIZE ))
 # echo "A reasonable sizemax should be $minsizemax"
 if [ "$sizemax" -lt "$minsizemax" ] ; then
 echo "sizemax, $sizemax less then minsizemax, $minsizemax :("
 exit 1
 fi
 trunc_directory
 ;;
 restore)
 restore_directory
 ;;
 *)
 echo "Usage: 0ドル {trunc <DIR> <MAXLENGTH> |restore <DIR>} " >&2
 exit 1
 ;;
 esac
}
main "$@"