Annotate LectureNotes PDFs

update_annotations.sh

#!/bin/bash

mkdir /tmp/magick_tmp
MAGICK_TMPDIR=/tmp/magick_tmp
export MAGICK_TMPDIR

LECTURENOTESDIR=/home/ec2-user/Dropbox/LectureNotes/
cd $LECTURENOTESDIR

process_directory() {
    BASE_NAME="$@"
#    echo "$BASE_NAME"
    PDF_NAME="$BASE_NAME"".original.pdf"
    # echo "$PDF_NAME"
    if [ -f "$PDF_NAME" ];
    then
 #       echo "File $PDF_NAME exists."
        if [ ! -f "$BASE_NAME"".annotated.pdf" ]; then
        rm -f "$BASE_NAME"".annotated.pdf"
        rm -f lclayer2.pdf
        rm -f lclayer3.pdf
        rm -f lclayer4.pdf
        rm -f lclayer12.pdf
        rm -f lclayer123.pdf
        rm -f lclayer1234.pdf
        convert *_2.png lclayer2.pdf
        if [ $? -ne 0 ]; then
            # echo "layer 2 does not exist"
            cp "$PDF_NAME" "$BASE_NAME"".annotated.pdf"
        else
            pdftk "$PDF_NAME" multistamp lclayer2.pdf output lclayer12.pdf
            rm -f lclayer2.pdf
            convert *_3.png lclayer3.pdf
            if [ $? -ne 0 ]; then
                # echo "layer 3 does not exist"
                mv lclayer12.pdf "$BASE_NAME"".annotated.pdf"
            else
                pdftk lclayer12.pdf multistamp lclayer3.pdf output lclayer123.pdf
                rm -f lclayer3.pdf
                rm -f lclayer12.pdf
                convert *_4.png lclayer4.pdf
                if [ $? -ne 0 ]; then
                    # echo "layer 4 does not exist"
                    mv lclayer123.pdf "$BASE_NAME"".annotated.pdf"
                else
                    pdftk lclayer123.pdf multistamp lclayer4.pdf output lclayer1234.pdf
                    rm -f lclayer4.pdf
                    rm -f lclayer123.pdf
                    mv lclayer1234.pdf "$BASE_NAME"".annotated.pdf"
                fi
            fi
        fi
        fi
  #  else
   #     echo "File $PDF_NAME does not exist."
    fi
}

recurse_subdir(){
    if [ "$#" -eq 1 ]; then
        process_directory $1
    fi
    for i in *; do
        if [ -d "$i" ]; then
#            echo "$i"
            cd "$i"
            recurse_subdir "$i"
            cd ../
        fi
    done
}

recurse_subdir
rm -rf /tmp/magick_tmpdir/*