advagg_js_compress.php53.inc

<?php


/**
 * @file
 * Advanced CSS/JS aggregation js compression php 5.3+ functions.
 */
use JShrink\Minifier;
use Patchwork\JSqueeze;

/**
 * Compress a JS string using jshrink.
 *
 * @param string $contents
 *   Javascript string.
 * @param bool $log_errors
 *   FALSE to disable logging to watchdog on failure.
 */
function advagg_js_compress_jshrink(&$contents, $log_errors = TRUE) {
    $no_errors = TRUE;
    $contents_before = $contents;
    // Set max nesting level.
    if (!class_exists('JShrink\\Minifier')) {
        $nesting_level = ini_get('xdebug.max_nesting_level');
        if (!empty($nesting_level) && $nesting_level < 200) {
            ini_set('xdebug.max_nesting_level', 200);
        }
    }
    // Try libraries for JShrink.
    if (is_callable('libraries_load')) {
        libraries_load('JShrink');
    }
    // Only include jshrink.inc if the JShrink\Minifier class doesn't exist.
    if (!class_exists('JShrink\\Minifier')) {
        include drupal_get_path('module', 'advagg_js_compress') . '/jshrink.inc';
    }
    ob_start();
    try {
        // JShrink the contents of the aggregated file.
        $contents = Minifier::minify($contents, array(
            'flaggedComments' => FALSE,
        ));
        // Capture any output from JShrink.
        $error = trim(ob_get_contents());
        if (!empty($error)) {
            $no_errors = FALSE;
            throw new Exception($error);
        }
    } catch (Exception $e) {
        $no_errors = FALSE;
        // Log the JShrink exception and rollback to uncompressed content.
        if ($log_errors) {
            watchdog('advagg_js_compress', '@message <pre> @contents </pre>', array(
                '@message' => $e->getMessage(),
                '@contents' => $contents_before,
            ), WATCHDOG_WARNING);
        }
        $contents = $contents_before;
    }
    ob_end_clean();
    return $no_errors;
}

/**
 * Compress a JS string using jsqueeze.
 *
 * @param string $contents
 *   Javascript string.
 * @param bool $log_errors
 *   FALSE to disable logging to watchdog on failure.
 * @param array $aggregate_settings
 *   The aggregate_settings array.
 */
function advagg_js_compress_jsqueeze(&$contents, $log_errors = TRUE, array $aggregate_settings = array()) {
    $no_errors = TRUE;
    $contents_before = $contents;
    // Set max nesting level.
    if (!class_exists('Patchwork\\JSqueeze')) {
        $nesting_level = ini_get('xdebug.max_nesting_level');
        if (!empty($nesting_level) && $nesting_level < 200) {
            ini_set('xdebug.max_nesting_level', 200);
        }
    }
    // Try libraries for jsqueeze.
    if (is_callable('libraries_load')) {
        libraries_load('jsqueeze');
    }
    if (!class_exists('Patchwork\\JSqueeze')) {
        // Only include jshrink.inc if the Patchwork\JSqueeze class doesn't exist.
        include drupal_get_path('module', 'advagg_js_compress') . '/jsqueeze.inc';
    }
    ob_start();
    try {
        $add_license_setting = isset($aggregate_settings['variables']['advagg_js_compress_add_license']) ? $aggregate_settings['variables']['advagg_js_compress_add_license'] : variable_get('advagg_js_compress_add_license', ADVAGG_JS_COMPRESS_ADD_LICENSE);
        $keep_important_comments = FALSE;
        if ($add_license_setting == 2 || $add_license_setting == 3) {
            $keep_important_comments = TRUE;
        }
        // Minify the contents of the aggregated file.
        $jz = new JSqueeze();
        $contents = $jz->squeeze($contents, TRUE, $keep_important_comments, FALSE);
        // Capture any output from JSqueeze.
        $error = trim(ob_get_contents());
        if (!empty($error)) {
            $no_errors = FALSE;
            throw new Exception($error);
        }
    } catch (Exception $e) {
        $no_errors = FALSE;
        // Log the JSqueeze exception and rollback to uncompressed content.
        if ($log_errors) {
            watchdog('advagg_js_compress', '@message <pre> @contents </pre>', array(
                '@message' => $e->getMessage(),
                '@contents' => $contents_before,
            ), WATCHDOG_WARNING);
        }
        $contents = $contents_before;
    }
    ob_end_clean();
    return $no_errors;
}