You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
|
|
|
#!/bin/sh
|
|
|
|
|
|
|
|
|
|
# Initialize variables
|
|
|
|
|
input="$1"
|
|
|
|
|
inputMul4="/tmp/${input%.pdf}-Mul4.pdf"
|
|
|
|
|
outputImpaginato="${input%.pdf}-Impaginato.pdf"
|
|
|
|
|
empty="/tmp/empty.pdf"
|
|
|
|
|
n="$(pdftk "$input" dump_data | grep NumberOfPages | cut -d' ' -f2)"
|
|
|
|
|
|
|
|
|
|
# Add empty pages
|
|
|
|
|
echo .bp | groff -T pdf > "$empty"
|
|
|
|
|
|
|
|
|
|
pdftk F="$input" E="$empty" cat F1-$n $(for x in $(seq 1 $((4-n%4))); do printf 'E1 '; done) output "$inputMul4"
|
|
|
|
|
|
|
|
|
|
# Generate alternating page ranges
|
|
|
|
|
n=$((n+(4-n%4)))
|
|
|
|
|
range=
|
|
|
|
|
k=1
|
|
|
|
|
while [ "$k" -lt $((n/2)) ]; do
|
|
|
|
|
range="$range$k $((n/2+k)) $((n/2+k+1)) $((k+1)) "
|
|
|
|
|
k=$((k+2))
|
|
|
|
|
done
|
|
|
|
|
|
|
|
|
|
# Output final pdf
|
|
|
|
|
pdftk "$inputMul4" cat $range output "$outputImpaginato"
|
|
|
|
|
|
|
|
|
|
rm "$empty" "$inputMul4"
|
