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|
#!/usr/bin/env bash
___ARGS=$@
___FILE=""
___FIRST_PAGE=0
___LAST_PAGE=0
___SANITY=1
___SCALE=250
___HAS_OPTIPNG=1
function ___help () {
echo "Convert a range of pages into pngs."
echo "USAGE:"
echo " pdf2images.sh <file>.pdf <first page> <last page>"
echo ""
}
function ___silent () {
$@ >> /dev/null 2>&1
return $?
}
function ___sanity_check () {
# Check that we have the tools needed.
___silent which pdftoppm
if [ $? -gt 0 ]; then
echo " Can't find tool \"pdftoppm\" (Required)."
___SANITY=0
fi
___silent which optipng
if [ $? -gt 0 ]; then
echo " Can't find tool \"optpng\" (Not required)."
___HAS_OPTIPNG=0
fi
if [ $___SANITY -eq 0 ]; then
echo "Please install the missing tools."
echo ""
exit 1
fi
}
function ___process () {
pdftoppm -f $___FIRST\
-l $___LAST\
-r $___SCALE\
-gray\
-png\
-progress\
$___FILE\
${___FILE%%.*}
if [ $___HAS_OPTIPNG -eq 1 ]; then
optipng ${___FILE%%.*}*.png
fi
}
function ___parse_args () {
if [ $# -eq 0 ]; then
___help
exit 1
fi
___FILE=$1
shift
___FIRST=$1
shift
___LAST=$1
shift
if [ $# -ne 0 ]; then
echo "Nummber of arguments missmatch."
echo ""
___help
exit 1
fi
}
function ___main () {
___sanity_check
___parse_args $___ARGS
___process
exit 0
}
___main
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