class CSSCompression_Setup in Advanced CSS/JS Aggregation 6
Same name and namespace in other branches
- 7 advagg_css_compress/css-compressor-3.x/src/lib/Setup.inc \CSSCompression_Setup
CSS Compressor [VERSION] [DATE] Corey Hart @ http://www.codenothing.com
Hierarchy
- class \CSSCompression_Setup
Expanded class hierarchy of CSSCompression_Setup
File
- advagg_css_compress/
css-compressor-3.x/ src/ lib/ Setup.inc, line 8
View source
class CSSCompression_Setup {
/**
* Trim Patterns
*
* @class Control: Compression Controller
* @class Individuals: Individuals Instance
* @instance instance: CSSCompression Instance
* @param (string) token: Copy of the injection token
* @param (array) options: Reference to options
* @param (array) stats: Reference to stats
* @param (regex) rsemicolon: Checks for semicolon without an escape '\' character before it
* @param (regex) rcolon: Checks for colon without an escape '\' character before it
* @param (regex) rbang: Checks for '!' without an escape '\' character before it
* @param (regex) rspacebank: Checks for an unescaped space before a bang character
* @param (regex) rliner: Matching known 1-line intros
* @param (regex) rnested: Matching known subsection handlers
* @param (regex) rurl: url wrapper matching
* @param (regex) rsinglequote: Checks for unescaped escaped single quote (mouthfull)
* @param (array) rsetup: Expanding stylesheet for semi-tokenizing
*/
private $Control;
private $Individuals;
private $instance;
private $token = '';
private $options = array();
private $stats = array();
private $rsemicolon = "/(?<!\\\\);/";
private $rcolon = "/(?<!\\\\):/";
private $rbang = "/(?<!\\\\)\\!/";
private $rspacebang = "/(?<!\\\\)\\s\\!/";
private $rliner = "/^@(import|charset|namespace)/i";
private $rmedia = "/^@media/i";
private $rurl = "/url\\((.*?)\\)/";
private $rsinglequote = "/(?<!\\\\)\\\\'/";
private $rsetup = array(
'patterns' => array(
"/(?<!\\\\){/",
"/(?<!\\\\)}/",
"/(?<!\\\\)@/",
"/(@(charset|import)[^;]*(?<!\\\\);)/",
),
'replacements' => array(
"\n{\n",
"\n}\n",
"\n@",
"\$1\n",
),
);
/**
* Stash a reference to the controller on each instantiation
*
* @param (class) control: CSSCompression Controller
*/
public function __construct(CSSCompression_Control $control) {
$this->Control = $control;
$this->Individuals = $control->Individuals;
$this->token = CSSCompression::TOKEN;
$this->options =& $control->Option->options;
$this->stats =& $control->stats;
}
/**
* Setup selector and details arrays for compression methods
*
* @param (string) css: Trimed stylesheet
*/
public function setup($css) {
// Seperate the element from the elements details
$css = explode("\n", preg_replace($this->rsetup['patterns'], $this->rsetup['replacements'], $css));
$newline = $this->options['readability'] > CSSCompression::READ_NONE ? "\n" : '';
$setup = array(
'selectors' => array(),
'details' => array(),
'unknown' => array(),
'introliner' => '',
'namespace' => '',
'import' => '',
'charset' => '',
);
while (count($css)) {
$row = trim(array_shift($css));
if ($row == '') {
continue;
}
else {
if ($row[0] == '@' && $css[0] == '{' && trim($css[1]) != '' && $css[2] == '}') {
// Stash selector
array_push($setup['selectors'], $row);
// Stash details (after the opening brace)
array_push($setup['details'], $this
->details(trim($css[1])));
// drop the details from the stack
$css = array_slice($css, 3);
}
else {
if (preg_match($this->rliner, $row, $match)) {
$setup[$match[1]] .= $this
->liner($row) . $newline;
}
else {
if ($row[0] == '@' && $css[0] == '{') {
// Stash atrule as selector
array_push($setup['selectors'], $this->token . $row);
// Stash details (after the opening brace)
array_push($setup['details'], $this
->nested($css, preg_match($this->rmedia, $row)) . $newline);
}
else {
if ($row[0] == '@' && substr($row, -1) == ';') {
$setup['introliner'] .= $row . $newline;
}
else {
if (count($css) >= 3 && $css[0] == '{' && $css[2] == '}') {
// Stash selector
array_push($setup['selectors'], $row);
// Stash details (after the opening brace)
array_push($setup['details'], $this
->details(trim($css[1])));
// drop the details from the stack
$css = array_slice($css, 3);
}
else {
// Still add to unknown stack, for notification
array_push($setup['unknown'], $row);
// Stash unknown artifacts as selectors with a token
array_push($setup['selectors'], $this->token . $row);
// Give it an empty rule set
array_push($setup['details'], '');
}
}
}
}
}
}
}
return $setup;
}
/**
* Run nested elements through a separate instance of compression
*
* @param (array) css: Reference to the original css array
* @param (bool) organize: Whether or not to organize the subsection (only true for media sections)
*/
private function nested(&$css = array(), $organize = false) {
$options = $this->options;
$left = 0;
$right = 0;
$row = '';
$independent = '';
$content = '';
$spacing = '';
$newline = $this->options['readability'] > CSSCompression::READ_NONE ? "\n" : '';
// Find the end of the nested section
while (count($css) && ($left < 1 || $left > $right)) {
$row = trim(array_shift($css));
if ($row == '') {
continue;
}
else {
if ($row == '{') {
$left++;
}
else {
if ($row == '}') {
$right++;
}
else {
if (count($css) && substr($row, 0, 1) != '@' && substr($css[0], 0, 1) == '@' && substr($row, -1) == ';') {
$independent .= $row;
continue;
}
}
}
}
$content .= $row;
}
// Ensure copy of instance exists
if (!$this->instance) {
$this->instance = new CSSCompression();
}
// Fresh start
$this->instance
->reset();
// Compress the nested section independently after removing the wrapping braces
// Also make sure to only organize media sections
if ($options['organize'] == true && $organize == false) {
$options['organize'] = false;
}
// Independent sections should be prepended to the next compressed section
$content = ($independent == '' ? '' : $independent . $newline) . $this->instance
->compress(substr($content, 1, -1), $options);
// Formatting for anything higher then 0 readability
if ($newline == "\n") {
$content = "\n\t" . str_replace("\n", "\n\t", $content) . "\n";
$spacing = $this->options['readability'] > CSSCompression::READ_MIN ? ' ' : '';
}
// Stash the compressed nested script
return "{$spacing}{" . $content . "}{$newline}";
}
/**
* Converts import/namespace urls into strings
*
* @param (string) row: At-rule
*/
private function liner($row) {
$pos = 0;
while (preg_match($this->rurl, $row, $match, PREG_OFFSET_CAPTURE, $pos)) {
$quote = preg_match($this->rsinglequote, $match[1][0]) ? '"' : "'";
$replace = $quote . $match[1][0] . $quote;
$row = substr_replace($row, $replace, $match[0][1], strlen($match[0][0]));
$pos = $match[0][1] + strlen($replace);
}
return $row;
}
/**
* Run individual compression techniques on each property of a selector
*
* @param (string) row: Selector properties
*/
private function details($row) {
$row = preg_split($this->rsemicolon, $row);
$parts = array();
$details = '';
foreach ($row as $line) {
// Set loopers
$parts = preg_split($this->rcolon, $line, 2);
$prop = '';
$value = '';
// Property
if (isset($parts[0]) && ($parts[0] = trim($parts[0])) != '') {
$prop = $parts[0];
}
// Value
if (isset($parts[1]) && ($parts[1] = trim($parts[1])) != '') {
$value = preg_replace($this->rbang, ' !', $parts[1]);
}
// Fail safe, remove unspecified property/values
if ($prop == '' || $value == '') {
continue;
}
// Run the tag/element through each compression
list($prop, $value) = $this->Individuals
->individuals($prop, $value);
// Add counter to before stats
$this->stats['before']['props']++;
// Store the compressed element
$details .= "{$prop}:" . preg_replace($this->rspacebang, '!', $value) . ";";
}
return $details;
}
/**
* Access to private methods for testing
*
* @param (string) method: Method to be called
* @param (array) args: Array of paramters to be passed in
*/
public function access($method, $args) {
if (method_exists($this, $method)) {
return call_user_func_array(array(
$this,
$method,
), $args);
}
else {
throw new CSSCompression_Exception("Unknown method in Setup Class - " . $method);
}
}
}
Members
Name | Modifiers | Type | Description | Overrides |
---|---|---|---|---|
CSSCompression_Setup:: |
private | property | Trim Patterns | |
CSSCompression_Setup:: |
private | property | ||
CSSCompression_Setup:: |
private | property | ||
CSSCompression_Setup:: |
private | property | ||
CSSCompression_Setup:: |
private | property | ||
CSSCompression_Setup:: |
private | property | ||
CSSCompression_Setup:: |
private | property | ||
CSSCompression_Setup:: |
private | property | ||
CSSCompression_Setup:: |
private | property | ||
CSSCompression_Setup:: |
private | property | ||
CSSCompression_Setup:: |
private | property | ||
CSSCompression_Setup:: |
private | property | ||
CSSCompression_Setup:: |
private | property | ||
CSSCompression_Setup:: |
private | property | ||
CSSCompression_Setup:: |
private | property | ||
CSSCompression_Setup:: |
public | function | Access to private methods for testing | |
CSSCompression_Setup:: |
private | function | Run individual compression techniques on each property of a selector | |
CSSCompression_Setup:: |
private | function | Converts import/namespace urls into strings | |
CSSCompression_Setup:: |
private | function | Run nested elements through a separate instance of compression | |
CSSCompression_Setup:: |
public | function | Setup selector and details arrays for compression methods | |
CSSCompression_Setup:: |
public | function | Stash a reference to the controller on each instantiation |