<?php
class CSSMin {
private $original_css;
private $compressed_css;
private $files;
/* Constructor for CSSMin class */
public function __construct() {
$this->original_css = "";
$this->compressed_css = "";
$this->files = array();
}
/* Add file as string (path and filename) */
public function addFile($file = null) {
if ($file != null && $file != "" &&
substr(strrchr($file, '.'), 1) == "css" && is_file($file)) {
$this->files[] = $file;
return true;
}
else {
return false;
}
}
/* Add multiple files array */
public function addFiles($files = null) {
if ($files != null && is_array($files)) {
$ok = true;
foreach ($files as $file) {
$ok = $this->addFile($file);
}
return $ok;
}
else {
return false;
}
}
/* Print original css files concatenated */
public function printOriginalCSS($header = false) {
if ($header) {
header('Content-type: text/css');
}
return $this->original_css;
}
/* Print compressed css files concatenated */
public function printCompressedCSS($header = false) {
if ($header) {
header('Content-type: text/css');
}
return $this->compressed_css;
}
/* Sets original css loop thru all added files */
public function setOriginalCSS() {
foreach ($this->files as $file) {
$fh = fopen($file, 'r');
$this->original_css .= fread($fh, filesize($file));
fclose($fh);
}
}
/* Make simple compression with regexp. */
public function compressCSS() {
$patterns = array();
$replacements = array();
/* remove multiline comments */
$patterns[] = '/\/\*.*?\*\//s';
$replacements[] = '';
/* remove tabs, spaces, newlines, etc. */
$patterns[] = '/\r\n|\r|\n|\t|\s\s+/';
$replacements[] = '';
/* remove whitespace on both sides of colons :*/
$patterns[] = '/\s?\:\s?/';
$replacements[] = ':';
/* remove whitespace on both sides of curly brackets {} */
$patterns[] = '/\s?\{\s?/';
$replacements[] = '{';
$patterns[] = '/\s?\}\s?/';
$replacements[] = '}';
/* remove whitespace on both sides of commas , */
$patterns[] = '/\s?\,\s?/';
$replacements[] = ',';
/* compress */
$this->compressed_css = preg_replace($patterns, $replacements, $this->original_css);
}
}
?> |