#!/bin/bash
# ==============================================================================
# - This script performs a backup of the PDA files to the local PC.
# - To backup the PIM files, perform first a manual backup of the PIM to
#   the built-in storage using the Windows CE utility.
# - You can call it from hotplug to perform an automatic backup each time you
#   connect the PDA.
#
# by Michel Acuna (quickcoder at users dot sourceforge dot net) - June 2005
# ==============================================================================
# Set up your parameters first :
#
# umask of created files, if you don't know what this is then don't change it
UMASK=077
# Target : PC dir - a folder with today's date will be created there for the 
#          first backup of the day and a folder named current with the last one
BACKUP_TARGET="/opt/backup/"
# Source : PDA directories - specify as many as you want in the array
BACKUP_SOURCE[1]="/My Documents/"
# ==============================================================================
# recursive function
# $1 = PDA directory 
# $2 = PC directory 
function copy-contents {
  synce-pls -a "$1" | while read i; do
    # i=last part + / if dir
    i=`echo "$i" | cut -b$POSSTRING-`

    if [ `echo "$i" | grep -cE "/$"` = 1 ] ; then
      # directory
      echo "making directory : $2$i"
      mkdir "$2$i"
      copy-contents "$1$i" "$2$i"
    else
      # file
      echo "copying file : $1$i"
      synce-pcp ":$1$i" "$2$i"
    fi
  done
}
# ==============================================================================
# pda connection validation
if [ `synce-pls / 2>&1 | grep -c "Unable to initialize RAPI"` = 1 ] ; then
  echo "ERROR : PDA can't be contacted"
  exit
fi
# local directory validation
if [ -d "$BACKUP_TARGET" ] ; then
  true
else
  echo "ERROR : \"$BACKUP_TARGET\" doesn't exist"
  exit
fi
# pda dirs don't require validation, if they don't exist then nothing is listed
# ==============================================================================
# begin main block
umask $UMASK
# calculate position of files in column
longstring=`synce-pls /Windows | sed "s/ /*/g"`
POSSTRING=`expr length "$longstring"`
POSSTRING=$[$POSSTRING-7]
# create current dir
rm -r "${BACKUP_TARGET}current/" 2>/dev/null
mkdir "${BACKUP_TARGET}current/"
# main loop
i=1
ilimit=${#BACKUP_SOURCE[@]}
while (( i <= ilimit )) ; do
  # create dir tree code
  newdir="${BACKUP_TARGET}current/"
  changed=`echo "${BACKUP_SOURCE[$i]}" | sed "s/ /*/g"`
  changed=`echo "$changed" | sed "s/\// /g"`
  for j in $changed ; do
    jchanged=`echo "$j" | sed "s/*/ /g"`
    newdir="$newdir$jchanged/"
    echo "making directory : $newdir"
    mkdir "$newdir"
  done 
  # copy call
  copy-contents "${BACKUP_SOURCE[$i]}" "${BACKUP_TARGET}current${BACKUP_SOURCE[$i]}"
  let "i+=1"
done
# create date dir
BACKUP_TARGET_2="${BACKUP_TARGET}`date +%F`/"
if [ -d "$BACKUP_TARGET_2" ] ; then
  echo "directory $BACKUP_TARGET_2 already exists, it won't be touched"
else
  echo "copying ${BACKUP_TARGET}current/ to $BACKUP_TARGET_2"
  mkdir "$BACKUP_TARGET_2"
  cp -r "${BACKUP_TARGET}current/" "$BACKUP_TARGET_2"
fi