+global\autoptimizeBase::inject_minified_callback()

Complexity

Conditions	14
Paths	250

Size

Total Lines

75

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
    public function inject_minified_callback( $matches )
    {
        static $conf = null;
        if ( null === $conf ) {
            $conf = autoptimizeConfig::instance();
        }

        /**
         * $matches[1] holds the whole match caught by regex in self::inject_minified(),
         * so we take that and split the string on `|`.
         * First element is the filepath, second is the md5 hash of contents
         * the filepath had when it was being processed.
         * If we don't have those, we'll bail out early.
        */
        $filepath = null;
        $filehash = null;

        // Grab the parts we need.
        $parts = explode( $matches[1], '|' );
        if ( ! empty( $parts ) ) {
            $filepath = isset( $parts[0] ) ? $parts[0] : null;
            $filehash = isset( $parts[1] ) ? $parts[1] : null;
        }

        // Bail early if something's not right...
        if ( ! $filepath || ! $filehash ) {
            return "\n";
        }

        $filecontent = file_get_contents( $filepath );

        // Some things are differently handled for css/js...
        $is_js_file = ( '.js' === substr( $filepath, -3, 3 ) );

        $is_css_file = false;
        if ( ! $is_js_file ) {
            $is_css_file = ( '.css' === substr( $filepath, -4, 4 ) );
        }

        // BOMs being nuked here unconditionally (regardless of where they are)!
        $filecontent = preg_replace( "#\x{EF}\x{BB}\x{BF}#", '', $filecontent );

        // Remove comments and blank lines.
        if ( $is_js_file ) {
            $filecontent = preg_replace( '#^\s*\/\/.*$#Um', '', $filecontent );
        }

        // Nuke un-important comments.
        $filecontent = preg_replace( '#^\s*\/\*[^!].*\*\/\s?#Um', '', $filecontent );

        // Normalize newlines.
        $filecontent = preg_replace( '#(^[\r\n]*|[\r\n]+)[\s\t]*[\r\n]+#', "\n", $filecontent );

        // JS specifics.
        if ( $is_js_file ) {
            // Append a semicolon at the end of js files if it's missing.
            $last_char = substr( $filecontent, -1, 1 );
            if ( ';' !== $last_char && '}' !== $last_char ) {
                $filecontent .= ';';
            }
            // Check if try/catch should be used.
            $opt_js_try_catch = $conf->get( 'autoptimize_js_trycatch' );
            if ( 'on' === $opt_js_try_catch ) {
                // It should, wrap in try/catch.
                $filecontent = 'try{' . $filecontent . '}catch(e){}';
            }
        } elseif ( $is_css_file ) {
            $filecontent = autoptimizeStyles::fixurls( $filepath, $filecontent );
        } else {
            $filecontent = '';
        }

        // Return modified (or empty!) code/content.
        return "\n" . $filecontent;
    }