#!/bin/sh
#
# A shell script to get image sizes, and return a well-formed html IMG
# tag. It requires basename, awk and the identify program from the
# ImageMagick suite.
#
# Author: R.F. Smith <rsmith@xs4all.nl>
# Time-stamp: <2010-08-29 14:06:37 rsmith>
#
# To the extent possible under law, Roland Smith has waived all copyright and
# related or neighboring rights to imgsize. This work is published from the
# Netherlands. See http://creativecommons.org/publicdomain/zero/1.0/

# Check for arguments
if [ $# -eq 0 ]; then
    echo "Usage: $(basename $0) filename  [\"alt text\"]"
    exit 1
fi

if [ ! -f $1 ]; then
  echo $ID
  echo 'The file "'$1'" does not exist in this directory.'
  exit 1
fi

# Check for special programs that are used in this script.
PROGS="identify"
for P in $PROGS; do
    which $P >/dev/null 2>&1
    if [ $? -ne 0 ]; then
	echo "$(basename $0): The program \"$P\" cannot be found."
	exit 1
    fi
done

echo -n '<img src="'$1'" '
if [ -z "$2" ]; then
    echo -n 'alt="'$(basename $1)
    du $1|awk '{printf(" [%d kb]\" ", $1);}'
else
    echo -n 'alt="'$2'" '
fi
echo -n 'border=0 '
identify $1 2>/dev/null |awk '{print($3);}'|\
awk -F "x" '{printf("width=%d height=%d />\n",$1,$2);}'