#!/bin/bash -norc # Create thumb-nail jpeg images for all jpeg files in a directory. # Also a .html template file is created with the references, proper # thumb-nail pixel sizes and original file size and date for each image. # Use the -h switch to avoid writing the html header, the -t switch # to not write the trailer and the -n switch for neither. # Find the path to the current directory (no trailing /) CURPATH=`pwd` # Pick out the fragment of the path that is needed in a URL. We assume here # that the directory is somewhere in the G0 ftp area specified either # in absolute terms or using a link (ftp) from the codagz home directory. HTMLPATH=`echo $CURPATH | sed "s#/home/codagz/ftp/##g"` HTMLPATH=`echo $HTMLPATH | sed "s#/pub/ftp/pub/G0/##g"` # Make sure that the "thumbs" directory exists. mkdir thumbs # Create a blank html file rm README.html if [ ${1:-NOARG} != -h -a ${1:-NOARG} != -n ]; then # Add a header to the html file. echo 'Generating HTML header.' cat <<-endhtml >README.html -title-

-title-

endhtml else echo 'No HTML header generated.' fi # Begin the table cat <<-endhtml >>README.html
endhtml # Create an index to keep track of when to start a new line declare -i FILENO declare -i ITEMNO FILENO=0 # For each jpeg file, generate a thumb-nail and add a line # to the html file. for FILE in `ls *.jpg`; do echo 'Processing ' $FILE # Generate a name for the intermediate file PNMNAME=/tmp/`basename $FILE .pnm` # Convert the input file to a thumb-nail file pnm format # file that fits in a 100X100 pixel box. djpeg -pnm $FILE | pnmscale -xysize 100 100 > $PNMNAME # Find the width and height of the resulting file. STATS=(`pnmfile $PNMNAME`) # Now convert the pnm thumb-nail file to a jpeg file # in the thumbs sub-directory and get rid of the intermediate # file. cjpeg -optimize $PNMNAME >./thumbs/thumb_$FILE rm $PNMNAME # Get the file size in kbytes (0'th element of this array) DISKSIZE=(`du -k $FILE`) # Get the file creation date DATE=(`ls -l $FILE`) # Start a new table row if necessary ITEMNO=$FILENO%6 if [ $ITEMNO -eq 0 ]; then cat <<-endhtml >>README.html endhtml fi # Add an entry to the html file for this picture. cat <<-endhtml >>README.html endhtml # Update the file counter FILENO=$FILENO+1 # Finish table row if necessary ITEMNO=$FILENO%6 if [ $ITEMNO -eq 0 ]; then cat <<-endhtml >>README.html endhtml fi done # Finish the table row if that hasn't already happened if [ $ITEMNO -ne 0 ]; then cat <<-endhtml >>README.html endhtml fi # Finish the table. cat <<-endhtml >>README.html

${DATE[5]} ${DATE[6]} ${DATE[7]}
${DISKSIZE[0]} kb

endhtml if [ ${1:-NOARG} != -t -a ${1:-NOARG} != -n ]; then # Add the trailer to the file. echo 'Generating HTML trailer.' cat <<-endhtml >>README.html
Go to G0 homepage

Send additions and corrections to
Steven Williamson.
endhtml else echo 'No HTML trailer generated.' fi