function CSSCompression_Combine_Background::combine

Combines multiple background props into single definition

Parameters

(string) val: Rule Set:

File

advagg_css_compress/css-compressor-3.x/src/lib/Combine/Background.inc, line 58

Class

CSSCompression_Combine_Background

CSS Compressor [VERSION] [DATE] Corey Hart @ http://www.codenothing.com

Code

public function combine($val) {
    $storage = array();
    // Find all possible occurences and build the replacement
    $pos = 0;
    while (preg_match($this->rbackground, $val, $match, PREG_OFFSET_CAPTURE, $pos)) {
        $storage[$match[2][0]] = $match[3][0];
        $pos = $match[0][1] + strlen($match[0][0]) - 1;
    }
    // Run background checks and get replacement str
    foreach ($this->groupings as $props) {
        if ($replace = $this->Combine
            ->searchDefinitions('background', $storage, $props)) {
            break;
        }
    }
    // If replacement string found, run it on all declarations
    if ($replace) {
        $pos = 0;
        while (preg_match($this->rbackground, $val, $match, PREG_OFFSET_CAPTURE, $pos)) {
            $colon = strlen($match[1][0]);
            $val = substr_replace($val, $replace, $match[0][1] + $colon, strlen($match[0][0]) - $colon);
            $pos = $match[0][1] + strlen($replace) - $colon - 1;
            $replace = '';
        }
    }
    // Return converted val
    return $val;
}