yPass.net

Thanks Eric and Igor, you guys are my hero! This is much better than jsmin-php. Your install instructions worked perfectly under Gentoo Linux without any tweaks.

You have inspired me too create a small PHP script to quickly minify javascript files on the commandline:

#!/usr/bin/php
<?php
/**
 * jsmin for the commandline
 *
 * Feel free to use and distribute as you wish.
 * Don't blame me for any damage this script might produce
 */
$instructions = "Usage: jsmin SOURCE [TARGET]
Remove comments and unnecessary whitespace from JavaScript files.
Example: jsmin test.js test.min.js";
try {
   if (empty($argv[1])) {
       throw new Exception('Missing SOURCE argument!');
   }
   if (empty($argv[2])) {
       // no TARGET file specified, minify to STDOUT
       fwrite(STDOUT, trim(jsmin(file_get_contents($argv[1]))));
   }
   else if (!file_exists($argv[2])) {
       // TARGET file does not exist, minify to new file
       jsminPutContents();
   }
   else {
       // TARGET file exists, ask to overwrite existing file
       fwrite(STDOUT, "Overwrite '{$argv[2]}'? [Y/N]: ");
       if (strtoupper(trim(fgets(STDIN))) === 'Y') {
           jsminPutContents();
       }
       else {
           exit(fwrite(STDOUT, "user aborted!\n"));
       }
   }
}
catch (Exception $e) {
   fwrite(STDOUT, 'ERROR: ' . $e->getMessage() .
      "\n{$instructions}\n");
}
function jsminPutContents() {
   global $argv;
   file_put_contents($argv[2],
      trim(jsmin(file_get_contents($argv[1]))));
   fwrite(STDOUT, "done!\n");
}
// EOF

This code presumes that you are running PHP5, that PHP-CLI is located at /usr/bin/php, that the above script is named ‘jsmin’ and is executable and resides in your system PATH. The only thing I noticed is that jsmin outputs content with leading newlines, that is why I have wrapped the output with a trim(). Feel free to use this script at your own risk (of overwriting existing files) in any way you wish.

thanks for this module, Igor.

I’m wondering where I need to run make / make install from:

I’m on Ubuntu 9.04 and have got apache modules here:

/usr/lib/apache2/modules

and php modules here:

/usr/lib/php5/20060613/

From the directory that was created when you untared the file. You should be able to issue each one of those commands exactly as shown in that order.

thanks – I untarred the file in my home dir.

should i untar it from elsewhere?

(i am not seeing jsmin as a module in phpinfo after an apache restart, so I’m presuming untarring / make / make install from my home dir didn’t place the req’d files in the correct place[s])

update: i didn’t have php5-cli installed. I installed that, re-ran through Igor’s instructions above and ran a test. It’s working.

The output from make was less-than clear to me w/r/t where the libs we’re being placed. I had to run make install as su. (apologies if these are Duh!, but …)

there’s still no sign of jsmin in phpinfo, so I ran a test to confirm i can minify. Confirmed.

Very much looking forward to using this. Many thanks

I would recommend wrapping this in a function so you can include some caching. This will help you run minify only once an hour, max.

function minify($file)
{
$cache = ‘cache-’.$file;

if(!file_exists($cache) || filemtime($cache) > 3600)
{
$content = jsmin(file_get_contents($file));
file_put_contents($cache, $content);
}

return file_get_contents($cache);
}

Usage:

if (!extension_loaded(’jsmin’))
{
dl(’jsmin.so’);
}
header(’Content-Type: text/javascript’);

echo minify(’my.js’);

@smcnally
The extension gets installed to wherever your PHP extensions are kept. It varies for every installation. If you want to load jsmin in apache automatically, you need to edit your php.ini file and add the extension line.

JSMin by default strips conditional compilation. This can be avoided by a simple patch (but this modification isn’t spreaded through the web). Web Optimizer ( http://code.google.com/p/web-optimizator/ ) has JSMin included (among YUI Compressor and Packer) and can help in automation of minify and merging you client side logic.