all2pdf/all2pdf

#!/usr/bin/env bash

## https://de.wikipedia.org/wiki/Comic-Book-Format
## https://www.din-formate.de/reihe-a-din-groessen-mm-pixel-dpi.html
## https://www.ihre-ideenfabrik.de/sp_faq/din-formate/

title="compress_pdf "$version""
end="Complete :P"

## do not change!
FILE=$*
DPI=0

#===  FUNCTION  ================================================================
#          NAME: chooseDPI
#   DESCRIPTION: 
#===============================================================================

chooseDPI() {

	while [ "$DPI" == 0 ] 
	do	
		#DPI=`zenity --list --title="$title" --text="Choose DPI" --width=680 --height=270 --column="Value" --column="DPI" 72 72 150 "150 (default)" 300 300`
        	DPI=`zenity --list --title="$title" --text="Choose DPI" --width=100 --height=270 --column="DPI" 72 150 300`

		[ $? -ne 0 ] && exit 2
	done

}

#===  FUNCTION  ================================================================
#          NAME: chooseDinSize
#   DESCRIPTION: create ssh tunnel to application server
#===============================================================================

chooseDinSize() {

	while [ ! "$DINNORM" ] 
	do	
		DIN_A3="`echo \"scale=0; \${DPI}*11.693333333/1\" | bc -l`x`echo \"scale=0; \${DPI}*16.536666667/1\" | bc -l`"
		DIN_A4="`echo \"scale=0; \${DPI}*8.266666667/1\" | bc -l`x`echo \"scale=0; \${DPI}*11.693333333/1\" | bc -l`"
		DIN_A5="`echo \"scale=0; \${DPI}*5.826666667/1\" | bc -l`x`echo \"scale=0; \${DPI}*8.266666667/1\" | bc -l`"

		read DINNORM DINSIZE <<< $(zenity --list --print-column=ALL --separator=' ' --title="$title" --text="vdvds" --width=680 --height=270 --column="Din Norm" --column="Format" A3 $DIN_A3 A4 $DIN_A4 A5 $DIN_A5)

		[ $? -ne 0 ] && exit 2
	done

}


#===  FUNCTION  ================================================================
#          NAME: extractFile
#   DESCRIPTION: 
#===============================================================================

function extractFile() {

    mkdir $$

    case $(file --mime-type -b "${FILE}") in
	## PDF
        application/pdf)  
		pdfimages -j "${FILE}" $$/bild
		;;
	## CBR
	application/x-rar)
		unrar e -y "${FILE}" $$/
		;;
	## CBZ
	application/zip)
		unzip -j "${FILE}" -d $$/
        ;;
	## directory
	inode/directory)
        	cp -R "${FILE}"/* $$/
        	## remove trailing /
        	FILE="${FILE%\/}"
		;;
        *)      
		FILETYP="unknown"  
		exit 1
		;;
    esac
}

#===  FUNCTION  ================================================================
#          NAME: RotateAutoPage
#   DESCRIPTION: rotate images

#===============================================================================

RotateAutoPage() {

	while [ $# -gt 0 ]; do
			w=`identify -format "%[fx:w]" "$1"`		
			h=`identify -format "%[fx:h]" "$1"`		
			if [ $w -gt $h ]
			then 
			convert "$1" -rotate 270 "$1"
			fi	
		shift

	done
}

#===  FUNCTION  ================================================================
#          NAME: renameExtFiles
#   DESCRIPTION: rename 01.jpg 001.jpg ... 
#===============================================================================

renameExtFiles() {

	for counter in {01..99}; do 
		## PID=678 -> test -f 678/89.* && mv 678/89.* 678/089.jpg
		test -f $$/${counter}.* \
			&& mv $$/${counter}.* $$/0${counter}.${FILE##*.}
#        find $$ -name "${counter}.*" | xargs
	done

}

#===  FUNCTION  ================================================================
#          NAME: checkCorruptPictures
#   DESCRIPTION: Detect corrupt pictures
#===============================================================================

#checkCorruptPictures() {
# 
#    find . -iname *g" -o -iname "*f" -type f 2>/dev/null | xargs identify -verbose >/dev/null 2>&1; echo $?
#
#}

#===  FUNCTION  ================================================================
#          NAME: createPDF
#   DESCRIPTION:  
#===============================================================================

createPDF() {

#        convert -compress jpeg -resize !874x1240 -density 150x150 -units PixelsPerInch $$/*g $$/*G $$/*/*g $$/*/*G $$/*/*f $$/*/*F "${1%\.pdf}_${compression}.pdf"
        convert -compress jpeg -resize !${DINSIZE} -density ${DPI}x${DPI} -units PixelsPerInch $$/*g $$/*G $$/*/*g $$/*/*G $$/*/*f $$/*/*F "${FILE%\.*}_${DPI}_${DINNORM}.pdf"

}

#===  FUNCTION  ================================================================
#          NAME: cleanup
#   DESCRIPTION: delete tmp files
#===============================================================================

cleanup() {
	
	rm -R $$/

}


#===  Scriptablauf  ================================================================
#
#
#===================================================================================

chooseDPI

## chooseDinSize
chooseDinSize


## extract images from file
extractFile

## rotate images
RotateAutoPage $$/*g $$/*G $$/*/*g $$/*/*G $$/*/*f $$/*/*F
#find $$ -type f -regex '.*[gfGF]$' | while read file; 
#do
#    RotateAutoPage "${file}"
#done 

## rename extracted images
renameExtFiles

## create new PDF
createPDF

## delete tmp files
cleanup