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#!/bin/bash
#
# This script can extract recipes from the PDFs mailed to customers of
# kochabo.at.
# Recipes from 2013 need extra processing for the file name in get_name().
# Recipes before 2014-18 (that's week 18) also need less processing (no obstbox recipe)
#
set -e
TMPDIR="$(mktemp -d "/tmp/${0##*/}.XXXXXX")"
trap "rm -rf '${TMPDIR}'" EXIT TERM
extract_pages() {
local first=$1
local last=$2
local output=$3
shift 3
gs -dNOPAUSE -dQUIET -dBATCH -dFirstPage=$first -dLastPage=$last -sOutputFile="$output" -sDEVICE=pdfwrite "$@"
}
get_obstbox_name() {
pdftotext "$1" /dev/stdout | sed -n '3p' | paste -sd " "
}
get_name() {
pdftotext "$1" /dev/stdout | grep -B10 "Nährwertangaben pro Person" | sed '/[1-5]$/d; $d' | paste -sd " "
# needed for older files with all uppercase names
#| awk '{print tolower($0)}' sed 's/\b\(.\)/\u\1/g; s#\bMit\b#mit#g; s#\bUnd\b#und#g; s#\bAuf\b#auf#g; s#\s\+$##;'
}
extract_obstbox() {
local tmpfile="$TMPDIR/rezept-obstbox.pdf"
extract_pages 4 4 "$tmpfile" "$file"
local name="$(get_obstbox_name "$tmpfile")"
if [[ -z $name ]]; then
rm "$tmpfile"
continue
fi
mv "$tmpfile" "extracted/$name.pdf"
pdfimages -j "extracted/$name.pdf" "$TMPDIR/$name"
local biggest_size=0
local biggest_path=""
local file
for file in "$TMPDIR/$name"-*.jpg; do
local size=$(stat -c%s "$file")
if ((size>biggest_size)); then
biggest_path="$file"
biggest_size=$size
fi
done
mv "$biggest_path" "extracted/$name.jpg"
rm -f "$TMPDIR"/*.{jpg,ppm}
}
extract_recipe() {
local i=$1
local tmpfile="$TMPDIR/rezept-$i.pdf"
# extract 2 pages for each $i starting on page 5
extract_pages $((skip_pages+((i-1)*2)+1)) $((skip_pages+((i-1)*2)+2)) "$tmpfile" "$file"
name="$(get_name "$tmpfile")"
if [[ -z $name ]]; then
rm "$tmpfile"
continue
fi
mv "$tmpfile" "extracted/$name.pdf"
pdfimages -j "extracted/$name.pdf" "$TMPDIR/$name"
mv "$TMPDIR/$name-000.jpg" "extracted/$name.jpg"
rm -f $TMPDIR/*.{jpg,ppm}
}
mkdir -p extracted
skip_pages=4
for file; do
extract_obstbox
# extract normal recipes
for i in 1 2 3 4 5; do
extract_recipe $i
done
done
output="index.html"
cat <<EOF >"$output"
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
html {
min-height: 100%;
background-color: #fff;
}
* {
margin: 0;
padding: 0;
}
a {
text-decoration: none;
color: #048;
}
a:hover {
color: #06C;
}
img {
border:0;
width: 220px;
}
.thumbnail {
line-height: 0;
}
div.thumbnail {
display: inline-block;
text-align: center;
vertical-align: middle;
width: 232px;
padding: 20px 0;
}
div.thumbnail p {
line-height: 1em;
padding-top: 10px;
}
img.thumbnail {
margin:2px;
border: 1px solid #fff;
}
body {
color: #444;
font-family: "Bitstream Vera Sans", Monospace;
margin-top: 30px;
text-align: center;
}
</style>
</head>
<body>
<a href="../">Übersicht</a><br />
EOF
for i in extracted/*.jpg; do
n=${i%.jpg}
bn=${n##*/}
echo "<div class='thumbnail'><a href='$n.pdf'><img src='$n.jpg'></a><p>$bn</p></div>" >> "$output"
done
cat <<EOF >>"$output"
<br /><a href="../">Übersicht</a><br />
</body>
</html>
EOF
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