function advagg_js_compress_do_it

Compress a JS string.

Paramètres

string $contents: Javascript string.

array $info: Info about the js file.

int $compressor: Use a particular compressor.

bool $force_run: TRUE to skip cache and force the compression test.

array $aggregate_settings: The aggregate_settings array.

bool $log_errors: FALSE to disable logging to watchdog on failure.

Return value

bool FALSE if there was an error.

1 call to advagg_js_compress_do_it()

advagg_js_compress_prep dans advagg_js_compress/advagg_js_compress.advagg.inc

Compress a JS string.

Fichier

advagg_js_compress/advagg_js_compress.advagg.inc, line 291

Code

function advagg_js_compress_do_it(&$contents, array $info, $compressor, $force_run, array $aggregate_settings, $log_errors) {
    $no_errors = TRUE;
    // Try cache.
    $content_hash = !empty($info['content_hash']) ? ":{$info['content_hash']}" : '';
    $cache_id = "advagg:js_compress:{$compressor}:{$info['filename_hash']}:{$content_hash}";
    $cache = cache_get($cache_id, 'cache_advagg_aggregates');
    $force_run = variable_get('advagg_js_compress_force_run', $force_run);
    if (!$force_run && !empty($cache->data)) {
        $contents = $cache->data;
    }
    else {
        // Strip Byte Order Marks (BOM's), preg_* cannot parse these well.
        $contents = str_replace(pack("CCC", 0xef, 0xbb, 0xbf), "", $contents);
        // Jsmin may have errors (incorrectly determining EOLs) with mixed tabs
        // and spaces. An example: jQuery.Cycle 3.0.3 - http://jquery.malsup.com/
        if ($compressor == 3) {
            $contents = str_replace("\t", " ", $contents);
        }
        // Add end string to get true end of file.
        // Generate random variable contents and add to end of js string.
        $random = dechex(mt_rand());
        $end_string = "var advagg_end=\"{$random}\";";
        $contents .= "\n{$end_string}";
        // Use the compressor.
        list(, , , $functions) = advagg_js_compress_configuration();
        if (isset($functions[$compressor])) {
            $run = $functions[$compressor];
            if (function_exists($run)) {
                $no_errors = $run($contents, $log_errors, $aggregate_settings);
            }
        }
        else {
            return FALSE;
        }
        // Get location of random variable.
        $end_string = substr($end_string, 0, -1);
        $pos = strrpos($contents, $end_string);
        if ($pos === FALSE) {
            $end_string = str_replace('"', "'", $end_string);
            $pos = strrpos($contents, $end_string);
        }
        if ($pos !== FALSE) {
            // Cut everything after random variable out of string.
            $contents = substr($contents, 0, $pos);
        }
        // Under some unknown/rare circumstances, JSMin and JSqueeze can add 2-3
        // extraneous/wrong chars at the end of the string. This work-around will
        // remove these chars if necessary. See https://www.drupal.org/node/2627468.
        // Also see https://github.com/sqmk/pecl-jsmin/issues/46.
        if ($compressor == 3 || $compressor == 5) {
            $a = strrpos($contents, ';');
            $b = strrpos($contents, '}');
            $c = strrpos($contents, ')');
            // Simple scripts can just end, check to make sure there's a
            // match before cutting.
            if ($a !== FALSE || $b !== FALSE || $c !== FALSE) {
                $contents = substr($contents, 0, 1 + max($a, $b, $c));
            }
        }
        // Ensure that $contents ends with ; or }.
        if (strpbrk(substr(trim($contents), -1), ';}') === FALSE) {
            // ; or } not found, add in ; to the end of $contents.
            $contents = trim($contents) . ';';
        }
        if (empty($info['#no_cache'])) {
            // Cache minified data for 1 week.
            cache_set($cache_id, $contents, 'cache_advagg_aggregates', REQUEST_TIME + 86400 * 7);
        }
        else {
            // Cache minified inline data for 1 hour.
            cache_set($cache_id, $contents, 'cache_advagg_aggregates', REQUEST_TIME + 3600);
        }
    }
    return $no_errors;
}