/**
* Transforms CSS into XML
*
* @return string $css
*/
public static function to_xml($css)
{
# Convert comments
self::$comments = array();
$xml = preg_replace_callback('/\\/\\*(.*?)\\*\\//sx', array('NestedSelectors', 'encode_comment'), $css);
# Convert imports
$xml = preg_replace('/
@import\\s+
(?:url\\(\\s*)? # maybe url(
[\'"]? # maybe quote
(.*?) # 1 = URI
[\'"]? # maybe end quote
(?:\\s*\\))? # maybe )
([a-zA-Z,\\s]*)? # 2 = media list
; # end token
/x', "<import url=\"\$1\" media=\"\$2\" />", $xml);
# Add semi-colons to the ends of property lists which don't have them
$xml = preg_replace('/((\\:|\\+)[^;])*?\\}/', "\$1;}", $xml);
# Transform properties
$xml = preg_replace('/([-_A-Za-z*]+)\\s*:\\s*([^;}{]+)(?:;)/ie', "'<property name=\"'.trim('\$1').'\" value=\"'.trim('\$2').'\" />\n'", $xml);
# Transform selectors
$xml = preg_replace('/(\\s*)([_@#.0-9A-Za-z\\/\\+~*\\|\\(\\)\\[\\]^\\"\'=\\$:,\\s-]*?)\\{/me', "'\$1\n<rule selector=\"'.preg_replace('/\\s+/', ' ', trim('\$2')).'\">\n'", $xml);
# Close rules
$xml = preg_replace('/\\;?\\s*\\}/', "\n</rule>", $xml);
# Indent everything one tab
$xml = preg_replace('/\\n/', "\r\t", $xml);
# Tie it up with a bow
$xml = '<?xml version="1.0" ?' . ">\r<css>\r\t{$xml}\r</css>\r";
return simplexml_load_string($xml);
}
/**
* Parse the CSS
*
* @return string - The processes css file as a string
* @author Anthony Short
**/
public static function parse_css()
{
# If the cache is stale or doesn't exist
if (self::config('core.cache.mod_time') <= self::config('core.request.mod_time')) {
# Start the timer
Benchmark::start("parse_css");
# Compress it before parsing
CSS::compress(CSS::$css);
# Import CSS files
Import::parse();
if (self::config('core.auto_include_mixins') === true) {
# Import the mixins in the plugin/module folders
Mixins::import_mixins('framework/mixins');
}
# Parse our css through the plugins
foreach (self::$plugins as $plugin) {
call_user_func(array($plugin, 'import_process'));
}
# Compress it before parsing
CSS::compress(CSS::$css);
# Parse the constants
Constants::parse();
foreach (self::$plugins as $plugin) {
call_user_func(array($plugin, 'pre_process'));
}
# Parse the @grid
Layout::parse_grid();
# Replace the constants
Constants::replace();
# Parse @for loops
Iteration::parse();
foreach (self::$plugins as $plugin) {
call_user_func(array($plugin, 'process'));
}
# Compress it before parsing
CSS::compress(CSS::$css);
# Parse the mixins
Mixins::parse();
# Find missing constants
Constants::replace();
# Compress it before parsing
CSS::compress(CSS::$css);
foreach (self::$plugins as $plugin) {
call_user_func(array($plugin, 'post_process'));
}
# Parse the expressions
Expression::parse();
# Parse the nested selectors
NestedSelectors::parse();
# Convert all url()'s to absolute paths if required
if (self::config('core.absolute_urls') === true) {
CSS::convert_to_absolute_urls();
}
# Replaces url()'s that start with ~ to lead to the CSS directory
CSS::replace_css_urls();
# Add the extra string we've been storing
CSS::$css .= CSS::$append;
# If they want to minify it
if (self::config('core.minify_css') === true) {
Minify::compress();
} else {
CSS::pretty();
}
# Formatting hook
foreach (self::$plugins as $plugin) {
call_user_func(array($plugin, 'formatting_process'));
}
# Validate the CSS
if (self::config('core.validate') === true) {
Validate::check();
}
# Stop the timer...
Benchmark::stop("parse_css");
if (self::config('core.show_header') === TRUE) {
CSS::$css = "/* Processed by CSScaffold on " . gmdate('r') . " in " . Benchmark::get("parse_css", "time") . " seconds */\n\n" . CSS::$css;
}
# Write the css file to the cache
self::cache_write(CSS::$css);
# Output process hook for plugins to display views.
# Doesn't run in production mode.
if (!IN_PRODUCTION) {
foreach (array_merge(self::$plugins, self::$modules) as $plugin) {
call_user_func(array($plugin, 'output'));
}
}
}
}
