savewdate

#!/bin/bash
# 2015.02.15
# Usage: savewtime filename

if [[ "x$1" == "x" ||  ! -f $1 ]]
then
 echo "Can't find the file $1."
 exit
fi

d="0"
m="0"
y="0"
i="0"
h="0"

if [ "$1" == "${1/\./}" ]
then
 elej="$1"
 veg=""
else
 veg=.${1##*.}
 elej=${1%.*}
fi

echo "d/D; m/M; y/Y; i/I; h/H: decrease/increase Day, Month, Year, mInute, Hour. r: reset; n: now; t: trigger time; c: coment; x: cancel; [enter]: ok."

ftime=`date -r "$1" +%s`
ntime=`date +%s`
diffs=$(($ftime-$ntime))
#echo $diffs
diffsave=$diffs

# time trigger: 1: date; 2: date+time; 0: none
tt=1

# raw comment string
rcom=""

while true; do


 if [[ $tt -gt 0 ]] ; then
  dstamp=_`date -d "$d days $m months $y years $diffs sec" +%y%m%d`
 else
  dstamp=""
 fi
 if [[ $tt -eq 2 ]] ; then
  tstamp=_`date -d "$i minutes $h hours $diffs sec" +%H%M`
 else
  tstamp=""
 fi
 if [[ "$rcom" == "" ]] ; then
  com=""
 else
  com="_$rcom"
 fi

newfn="$elej""$dstamp""$tstamp""$com""$veg"


echo -e -n "\r\033[KMaking a copy: $newfn"

 #echo "diffs: $diffs"
 #echo "i: $i"
 read -s -n 1 key

 if [[ $key == "" ]] ; then
  if [[ -f "$newfn" ]] ; then
   echo -e "\nFile $newfn exists!"
  else
   break
  fi
 fi

 if [[ $key == "y" ]] ; then
  ((y--))
 fi

 if [[ $key == "Y" ]] ; then
  ((y++))
 fi

 if [[ $key == "m" ]] ; then
  ((m--))
 fi

 if [[ $key == "M" ]] ; then
  ((m++))
 fi

 if [[ $key == "d" ]] ; then
  ((d--))
 fi

 if [[ $key == "D" ]] ; then
  ((d++))
 fi

 if [[ $key == "h" ]] ; then
  ((h--))
 fi

 if [[ $key == "H" ]] ; then
  ((h++))
 fi

 if [[ $key == "i" ]] ; then
  ((i--))
 fi

 if [[ $key == "I" ]] ; then
  ((i++))
 fi

 if [[ $key == "r" ]] ; then
  y=0
  m=0
  d=0
  h=0
  i=0
  diffs=$diffsave
 fi

 if [[ $key == "n" ]] ; then
  y=0
  m=0
  d=0
  h=0
  i=0
  diffs=0
 fi

 if [[ $key == "x" ]] ; then
  echo -e "\nHaven't done anything."
  exit
 fi

 if [[ $key == "c" ]] ; then
  echo $'\nAny more comments?'
  read rcom
 fi

 if [[ $key == "t" ]] ; then
  if [[ $tt -eq 2 ]] ; then
   tt=0
  else
   ((tt++))
  fi
 fi
done

echo -e "\n$1 --> $newfn"
cp "$1" "$newfn"
chmod a-w "$newfn"