eureka/thumbnailer.sh
2021-05-17 22:03:18 -06:00

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#!/bin/sh
ROOT=../www
SRC=../www/img
SIZE=500
# transform path to /img/*/.thumb/
pathtrans() {
filename=$(echo $1 | awk -F/ '{print $NF}')
filename=$(echo ${filename} | awk 'BEGIN{FS=OFS="."}{NF--; print $0}')
transform=$(echo $1 | awk 'BEGIN{FS=OFS="/"}{NF--; print $0}')
if [ ! -d ${transform}/.thumb ]; then
mkdir ${transform}/.thumb/
fi
transform=${transform}/.thumb/${filename}.png
echo ${transform}
}
# generate thumbnails in /img/*/.thumb/
resize() {
output=$(pathtrans $1)
if [ ! -f ${output} ]; then
convert $1 -strip -auto-orient -resize ${SIZE} -dither FloydSteinberg -colors 16 ${output}
fi
replace $1 ${output}
}
# crawl through html and replace src='/img/*/*' with src='/img/*/.thumb/*'
replace() {
src=$(echo $1 | sed s#\.\./www##)
dest=$(echo $2 | sed s#\.\./www##)
src=$(echo "src='${src}'")
dest=$(echo "src='${dest}'")
for f in $(find ${ROOT}/*.html); do
if grep ${src} ${f}; then
sed -i s#${src}#${dest}# $f
fi
done
}
echo "creating new thumbnails"
for x in $(find ${SRC}/*/*); do resize $x exit; done
echo "done"