Convert PDF presentations to PowerPoint PPT

pdf2ppt.sh

#!/bin/bash -e

D=$(mktemp -d)

mkdir -p "$D/o/Pictures" "$D/o/META-INF"
echo -n 'application/vnd.oasis.opendocument.presentation' > "$D/mimetype"
gs -sDEVICE=png16m -dSAFER -dBATCH -dNOPAUSE -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sOutputFile="$D/o/Pictures/%03d.png" -r254 "$1"

pushd "$D/o"

echo '<?xml version="1.0" encoding="UTF-8"?><manifest:manifest xmlns:manifest="urn:oasis:names:tc:opendocument:xmlns:manifest:1.0" manifest:version="1.2"><manifest:file-entry manifest:full-path="/" manifest:version="1.2" manifest:media-type="application/vnd.oasis.opendocument.presentation"/><manifest:file-entry manifest:full-path="content.xml" manifest:media-type="text/xml"/>' > "META-INF/manifest.xml"
for i in Pictures/*.png; do
    echo "<manifest:file-entry manifest:full-path='$i' manifest:media-type='image/png'/>" >> "META-INF/manifest.xml"
done
echo '</manifest:manifest>' >> "META-INF/manifest.xml"

echo '<?xml version="1.0" encoding="UTF-8"?><office:document-content xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0" xmlns:draw="urn:oasis:names:tc:opendocument:xmlns:drawing:1.0" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0" office:version="1.2"><office:body><office:presentation>' > "content.xml"
for i in Pictures/*.png; do
    echo "<draw:page><draw:frame svg:width='28cm' svg:height='21cm'><draw:image xlink:href='$i'></draw:image></draw:frame></draw:page>" >> "content.xml"
done
echo '</office:presentation></office:body></office:document-content>' >> "content.xml"

zip "../out.odp" -r .

soffice "-env:UserInstallation=file://$D" --headless --invisible --convert-to ppt --outdir "$D" "$D/out.odp"

popd

cp "$D/out.ppt" "${1%.pdf}.ppt"
rm -rf "$D"
echo "Complete: $1 -> ${1%.pdf}.ppt"