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Slideshare Downloader
#!/bin/bash
#-----------------------------------------------
# Modify 4/08/2018 by giudinvx
# Email giudinvx[at]gmail[dot]com
#-----------------------------------------------
# Author: Andrea Lazzarotto
# http://andrealazzarotto.com
# andrea.lazzarotto@gmail.com
# Slideshare Downloader
# This script takes a slideshare presentation URL as an argument and
# carves all the slides in flash format, then they are converted to
# and finally merged as a PDF
# License:
# Copyright 2010-2011 Andrea Lazzarotto
# This script is licensed under the Gnu General Public License v3.0.
# You can obtain a copy of this license here: http://www.gnu.org/licenses/gpl.html
# Usage:
# slideshare-downloader.sh URL -s [NUMBER OF SLIDES TO DOWNLOAD] -q [QUALTY OF IMAGES 320,1024]
check_dependencies() {
# Verifies if all binaries are present
DEP="wget sed seq convert"
ERROR="0"
for i in $DEP; do
WHICH="`which $i`"
if [[ "x$WHICH" == "x" ]];
then
echo "Error: $i not found."
ERROR="1"
fi
done
if [ "$ERROR" -eq "1" ];
then
echo "You need to install some packages."
echo "Remember: this script requires Wget and Convert."
exit 1
fi
}
validate_input() {
# Performs a very basic check to see if the url is in the correct form
URL=`echo "$1" | cut -d "#" -f 1 | cut -d "/" -f 3`
q=638
DOMAIN=`echo "$URL" | cut -d "/" -f 3`
CORRECT='www.slideshare.net'
myArray=("$@")
if [ "$DOMAIN" != "$CORRECT" ]
then
echo "Provided URL is not valid." >&2
exit 1
fi
for i in "$@"
do
l=$((l + 1))
case $i in
-s)
s=${myArray[$l]}
;;
-q)
q=${myArray[$l]}
;;
-h)
echo "Use -s (total number of slides) | -q (quality of slides, default is 638px) [320,1024,728]" >&2
exit 1
;;
esac
done
#check if the number of slides is setted
if echo -n "$s" | grep "^[0-9]*$">/dev/null
then SIZE=$s
else
SIZE=10
echo "Size of total nomber of slides not defined... trying to extracting it, or defaulting is 10."
fi
#check if the quality of slides to download is setted
if [ $q -eq 320 ] || [ $q -eq 1024 ] || [ $q -eq 728 ]
then QUALITY=$q
else
QUALITY=638
echo "Quality of images not defined... defaulting to 638."
fi
}
build_params() {
# Gathers required information
DOCSHORT=`echo "$1" | cut -d "/" -f 5`
echo "Download of $DOCSHORT started."
echo "Fetching information..."
INFOPAGE=`wget -q -O - "$1"`
#trying to capture the url of the first slide .jpg
IMGURL=`echo "$INFOPAGE" | grep "data-normal" | head -n 1 | grep -oP "(?<=data-normal=\")[^\"]+(?=\")" | cut -d "?" -f1`
#try to extract the total number of slides
#SIZE=`echo "$INFOPAGE" | grep "totalSlides" | head -n 1 | sed -s "s/.*total-slides//g" | sed s/[^0-9]//g`
#if [[ "$SIZE" =~ ([0-9]+)$ ]]
# then
# echo "Number of slide found - $SIZE"
#fi
}
create_env() {
# Finds a suitable name for the destination directory and creates it
DIR=$DOCSHORT
if [ -e "$DIR" ];
then
I="-1"
OLD=$DIR
while [ -e "$DIR" ]
do
I=$(( $I + 1 ))
DIR="$OLD.$I"
done
fi
mkdir "$DIR"
}
fetch_slides() {
#clean the string from the dynamic param
NURL=`echo $IMGURL | sed "s/[0-9]-[0-9]*\.jpg$//g"`
#download all slides in jpg format
for i in $( seq 1 $SIZE ); do
echo "Downloading slide $i"
echo $NURL`echo $i`-`echo $QUALITY`.jpg
wget "$NURL`echo $i`-`echo $QUALITY`.jpg" -q -O "$DIR/slide-`echo $i`.jpg"
done
echo "All slides downloaded."
}
build_pdf() {
IMAGES=`ls $DIR/*.jpg | sort -V`
echo "Generating PDF..."
convert $IMAGES $DIR/$DOCSHORT.pdf
echo "The PDF has been generated."
echo "Find your presentation in: \"`pwd`/$DIR/$DOCSHORT.pdf\""
}
clean() {
rm -rf $DIR/slide-*.jpg
}
check_dependencies
validate_input $@
build_params $@
create_env
fetch_slides
build_pdf
clean
@lupo49

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@lupo49 lupo49 commented Dec 27, 2012

Hi, the downloaded *.swf file are all empty. Could you provide a small fix for it?

When using debian the swfdec-thumbnailer isn't available anymore. Therefore, I replaced it with "gnash".

gnash --screenshot last --screenshot-file $DIR/slide-$i.png -1 -r1 $DIR/slide-$i.swf
@Mte90

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@Mte90 Mte90 commented Apr 16, 2013

same problem with swf file emplty...

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