raw-thumb-index-gen

#!/bin/bash
#
# Author: Ariel Kanterewicz <ariel@aknt.com.ar>
#
# Why this exists: 
# Because I had an archive of RAW files of old pictures (all of them CR2 files),
# and the host was complaining (rightly so) that it was just a bunch of files 
# dumped there instead of a proper web page.
#
# What this does:
# 1) loop over the .CR2 files in the current directory, and for every file:
#  a) extract the JPEG preview using exiftool, save it to a file
#  b) resize the JPEG to 400 pixels on the longer side
#  c) print an <a> tag linking to the CR2 file, with an <img> tag inside 
#     showing the JPEG (a lot of these make a thumbnail gallery that your 
#     browser WILL read as I intend, even if it's technically not correct HTML)
#
# This is a quick and dirty hack but it works and shows examples of:
# - bash loops
# - exiftool usage
# - imagemagick usage
# - basic HTML tags
# - some nifty string manipulation stuff in bash that I don't recall the name of
#
# And that's why I'm sharing this with the world :-D

for i in *CR2; do 
	exiftool -b -PreviewImage $i > ${i%.*}.JPG
	convert ${i%.*}.JPG -resize 400x400 ${i%.*}.JPG
	echo '<a href="'$i$'"><img src="'${i%.*}.JPG'"></a>' >> index.html
	echo $i "->" ${i%.*}.JPG 
done