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CodeIgniter Minify

Please note this project is no longer maintained.

The goal of this project is to provide a simple way to minify and combine js and css files inside a CodeIgniter application. Currently other systems exists but I wanted the compression to be part of my build process. So on deployments I compress and minify all the js and css. Then push off to s3 but this could also be useful to write them to a single file.

Installation

Upload the Minify folder to your libraries folder. This is built using CI2 packages and you must be using CI2.

Usage

Below is an overview of different usages:

Minify JS file

$this->load->driver('minify');
$file = 'test/js/test1.js';
echo $this->minify->js->min($file);

Minify CSS file

$this->load->driver('minify');
$file = 'test/css/test1.css';
echo $this->minify->css->min($file);

Minify String

$this->load->driver('minify');
$content = 'body{ padding:0; margin: 0}';
echo $this->minify->css->min($content);

Minify and combine an array of files. Useful if you need files to be in a certain order.

$this->load->driver('minify');
$files = array('test/css/test2.css', 'test/css/test1.css');
echo $this->minify->combine_files($files, [optionalParams]);

Minify and save a physical file

$this->load->driver('minify');
$file = 'test/css/test1.css';
$contents = $this->minify->css->min($file);
$this->minify->save_file($contents, 'test/css/all.css');

Minify an entire directory. The second param is an array of ignored files.

$this->load->driver('minify');
echo $this->minify->combine_directory('test/css/, array('all.css'), [optionalParams]);

Optional Params

combine_files($files, [type], [compact], [css_charset]);
combine_directory($directory, [ignore], [type], [compact], [css_charset]);

Common:

[type]: string ('css' or 'js')
[compact] : bool (TRUE, FALSE). TRUE Compact/compress output, FALSE doesn't compress output (only aggregation)
[css_charset] : string (default 'utf-8'). If CSS you can force a starting single charset declaration (when aggregate files)
               due to the charset pre-removal (for stantdars compliance and Webkit bugfix prevention)
               set to null or leave empty if JS.

Combine dir:

[ignore] : array with files to ignore

Credits

fsencinas - (https://github.com/fsencinas) JS-Min - (https://github.com/rgrove/jsmin-php)