epson-scanner-automation-program.bash

#!/bin/bash
# TYPE: Bash Shell script.
# PURPOSE: Scan documents on Epson scanner to PDF file. Can unite multiple PDF files in work directory, automatically send united PDF to your Email account, and then automatically archive them.
# REQUIRES: Ubuntu 16.04 LTS 64-bit or newer
# REQUIRES: ksh sane-utils tesseract-ocr tesseract-ocr-eng tesseract-ocr-nld tesseract-ocr-fra
# tesseract-ocr-deu msmtp heirloom-mailx imagemagick pdfunite
# REVISED: 2017/05/25
# AUTHOR: Mark Rijckenberg

# First execute these Terminal commands to install prerequisites:
# sudo apt update
# sudo apt install tesseract-ocr tesseract-ocr-eng tesseract-ocr-nld tesseract-ocr-fra tesseract-ocr-deu msmtp heirloom-mailx sane-utils

 function cleanup {
  rm -rf /tmp/*
  }
  

function setdefaultvalues {
LANGUAGESETTING="eng"
RESOLUTIONSETTING="300"
EMAIL=""
COLORSETTING="Gray"
}

# 2017/5/25: scan2email function currently not working correctly...
function scan2email {

        if  [[ $pdfquantity -gt 1 ]];then
		    pdfunite *.pdf  `echo $dateunitedpdf``echo $pdfname`	           
		    # First create and configure the files ~/.msmtprc  and ~/.mailrc
		    # The file ~/.msmtprc should contain the line   set sendmail=/usr/bin/msmtp
		    # Replace emailaddress@somewhere.com with the correct destination Email address
		    echo "Hi, here are my scanned files from `echo $dateunitedpdf`" | mail -s `echo $dateunitedpdf``echo $pdfname` -a `echo $dateunitedpdf``echo $pdfname` $EMAIL
		    mkdir `echo $dateunitedpdf`
		    mv *.pdf `echo $dateunitedpdf`
        fi
	           
        if  [[ $pdfquantity -eq 1 ]];then
	           
		    # First create and configure the files ~/.msmtprc  and ~/.mailrc
		    # The file ~/.msmtprc should contain the line   set sendmail=/usr/bin/msmtp
		    # Replace emailaddress@somewhere.com with the correct destination Email address
		    mv *.pdf  `echo $dateunitedpdf``echo $pdfname`
		    echo "Hi, here are my scanned files from `echo $dateunitedpdf`" | mail -s `echo $dateunitedpdf``echo $pdfname` -a `echo $dateunitedpdf``echo $pdfname` $EMAIL
		    mkdir `echo $dateunitedpdf`
		    mv *.pdf `echo $dateunitedpdf`
        fi

}

function setlanguage {

  echo "Press 1 to scan English document"
  echo "Press 2 to scan Dutch document"
  echo "Press 3 to scan French document"
  echo "Press 4 to scan German document"
  read LANG
  
  if [ $LANG -eq 1 ];then
    echo "English chosen"
    LANGUAGESETTING="eng"
    mainmenu
  fi
 
  if [ $LANG -eq 2 ];then
    echo "Dutch chosen"
    LANGUAGESETTING="nld"
    mainmenu
  fi
 
  if [ $LANG -eq 3 ];then
    echo "French chosen"
    LANGUAGESETTING="fra"
    mainmenu
  fi
 
  if [ $LANG -eq 4 ];then
     echo "German chosen"
     LANGUAGESETTING="deu"
     mainmenu
  fi
 } 
 
 function setresolution {
   
  echo "Press 1 to scan at 300 dpi"
  echo "Press 2 to scan at 600 dpi"
  echo "Press 3 to scan at 1200 dpi"
  read RES
  
  if [ $RES -eq 1 ]
    then
    echo "300 dpi chosen"
    RESOLUTIONSETTING="300"
    mainmenu
  fi
 
  if [ $RES -eq 2 ]
    then
    echo "600 dpi chosen"
    RESOLUTIONSETTING="600"
    mainmenu
  fi
 
  if [ $RES -eq 3 ]
    then
    echo "1200 dpi chosen"
    RESOLUTIONSETTING="1200"
    mainmenu
  fi
 }
 
 function setemail {

 echo "Which Email address should the scanned document(s) be sent to?"
 read EMAIL
 mainmenu
 }
 
  function setcolor {
   
  echo "Press 1 to scan document in Gray only"
  echo "Press 2 to scan document in Color"
  read COLOR
  
  if [ $COLOR -eq 1 ]
    then
    echo "Gray chosen"
    COLORSETTING="Gray"
    mainmenu
  fi
 
  if [ $COLOR -eq 2 ]
    then
    echo "Color chosen"
    COLORSETTING="Color"
    mainmenu
  fi
 } 

function mainmenu {
  
  WORKDIR=/tmp
  tiffname=scannedfile.tiff
  pdfname=scannedfile.pdf
  datepdf=$(date +"%Y_%m_%d_%H_%M_%S")
  dateunitedpdf=$(date +"%Y_%m_%d")
  pdfquantity=$(ls $WORKDIR|grep pdf|wc -l)
  cd $WORKDIR
  echo "Language selected: $LANGUAGESETTING"
  echo "Resolution selected: $RESOLUTIONSETTING"
  echo "Email address selected: $EMAIL"
  echo "Color selected: $COLORSETTING"
  echo "Press 1 to scan single document and save it in your work directory as a PDF"
  echo "Press 2 to unite multiple PDF files in your work directory, send united PDF to your Email account, and then archive them"
  echo "Press 3 to exit shell program"  
  echo "Press 4 to set language" 
  echo "Press 5 to set resolution"   
  echo "Press 6 to set email"   
  echo "Press 7 to set color" 
  read ACTION

  
if [[ $ACTION -eq 1 ]]; then   
      
SOURCE=""
 
if [ $# -gt 1 ]
then
 
SOURCE="--source ADF -l 3"
outname=temp
pbreak=$1
 
echo "$pbreak" | egrep "[^0-9,]+"
if [ $? -ne 1 ]
then
echo "Check Sequence List !"
exit 1
fi
else
 
pbreak=99
outname=$1
SOURCE="--batch-count=1"
 
fi
 
startdir=$(pwd)
tmpdir=scan-$RANDOM
 
cd /tmp
mkdir $tmpdir
cd $tmpdir
echo "################## Scanning ###################"
scanimage -x 210 -y 297 --batch=out%02d.tif --format=tiff --mode $COLORSETTING --resolution $RESOLUTIONSETTING $SOURCE
 
start=1
cnt=1
sc=$(echo "$pbreak" | cut -d"," -f1-99 --output-delimiter=" " | wc -w)
for pb in $(echo "$pbreak" | cut -d "," -f1-99 --output-delimiter=" "); do
ende=$(expr $start + $pb - 1)
pnr=0
i=1
echo "############ Page-Sequence ($cnt), Pages: $pb, Start: $start, End: $ende ############"
tpages=""
for page in $(ls out*.tif); do
pnr=$(expr $pnr + 1)
if [ $pnr -ge $start -a $pnr -le $ende ]
then
echo "... Converting"
# increase contrast and reduce colordepth
convert $page -level 15%,85% -depth 2 "b$page"
echo "... OCRing"
tpages="$tpages b$page"
i=$(expr $i + 1)
echo -n " "
tesseract $page $page -l $LANGUAGESETTING
if [ $sc -gt 1 ]
then
cnts=`printf %02d $cnt`
cat $page.txt >> $outname.$cnts.txt
else
cat $page.txt >> $outname.txt
fi
 
fi
done
 
echo "... Converting to PDF"
#Use tiffcp to combine output tiffs to a single multipage tiff
tiffcp $tpages output.tif
#Convert the tiff to PDF
if [ $sc -gt 1 ]
then
cnts=`printf %02d $cnt`
tiff2pdf -z output.tif > $startdir/$outname.$cnts.pdf
mv $outname.$cnts.txt $startdir
else
tiff2pdf -z output.tif > $startdir/$outname.pdf
mv $outname.txt $startdir
fi
 
start=$(expr $start + $pb)
cnt=$(expr $cnt + 1)

done

cd ..
echo "################ Cleaning Up ################"
rm -rf $tmpdir
cd $startdir
mv  \.pdf `echo $datepdf``echo $pdfname`
rm \.txt
fi

if [[ $ACTION -eq 2 ]]; then
 scan2email
fi

if [[ $ACTION -eq 4 ]]; then
 setlanguage
fi

if [[ $ACTION -eq 5 ]]; then
 setresolution
fi

if [[ $ACTION -eq 6 ]]; then
 setemail
fi  

if [[ $ACTION -eq 7 ]]; then
 setcolor
fi


           
}

cleanup
setdefaultvalues
mainmenu