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#!/usr/bin/env kjscmd
//
// Script to create an image gallery for a set of images.
//
var default_title = 'Image Gallery';
var default_intro = 'Here are some images, the larger ones have been scaled down to '
+ 'ensure this page loads quickly. Click on an image or filename '
+ 'to see it full size.';
var default_width = 250;
var default_height = 160;
function write_header( title, intro )
{
println( '<html>' );
println( '<head>' );
println( '<title>'+title+'</title>' );
println( '</head>' );
println( '<body>' );
println( '<h1 align="center">'+title+'</h1>' );
println( '<hr>' );
println( '<p>'+intro+'</p>' );
println( '<table border=0 width="90%" cellpadding="12" cellspacing="1">' );
}
function write_footer()
{
println( '</table>' );
println( '</body></html>' );
}
function write_image( name, w, h, thumb, tw, th, desc )
{
println( '<tr>' );
print( '<td align="center">' );
print( '<a href="'+name+'">' );
print( '<img border=0 width='+tw+' height='+th+' src="'+thumb+'">' );
print( '</a>' );
println( '</td>' );
print( '<td width="60%" valign="top" align="justify">' );
print( '<b><a href="'+name+'">'+name+'</a></b>'+' ('+w+'x'+h+')' );
// println( '<hr>' );
println( '<p>'+desc+'</p>' );
println( '</td>' );
println( '</tr>' );
}
// Create a thumbnail and write the img tag.
function process_image( name, desc )
{
var img = new Image();
img.load( name );
if ( !img.isOk() ) {
warn( 'Failed to load image '+name);
return null;
}
var w = img.width();
var h = img.height();
if ( (w > default_width) || (h > default_height) ) {
img.smoothScaleMin( default_width, default_height );
}
var tw = img.width();
var th = img.height();
var thumb = 'thumb-'+name;
img.save( thumb );
if ( !img.isOk() ) {
warn( 'Failed to save thumbnail '+thumb);
return null;
}
write_image( name, w, h, thumb, tw, th, desc );
}
if ( application.args.length == 0 ) {
System.stderr.println( 'Usage:' );
System.stderr.println( '\timagegallery imgfile ...' );
}
else {
write_header( default_title, default_intro );
for ( var i = 0 ; i < application.args.length ; i++ ) {
var name = application.args[i];
if ( name.match( /^thumb-/ ) ) {
// Ignore thumbnails
}
else {
var desc_file = name.replace( /\.[^\.]+$/, '.htm' );
var desc;
try {
desc = System.readFile( desc_file );
}
catch(x) {
desc = '<i>No Description</i>';
}
process_image( name, desc );
}
}
write_footer();
}
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