kupshop/class/smarty_plugins/block.asset_compile.php

<?php

global $cfg;

// define('SACY_TRANSFORMER_SASS', 1);
define('SACY_DEBUG_TOGGLE', 'SMARTY_DEBUG');
define('SACY_QUERY_STRINGS', 'force-handle');
define('SACY_WRITE_HEADERS', false);
define('SACY_TRANSFORMER_FONTICONS', '/usr/local/bin/fontcustom');

define('ASSET_COMPILE_OUTPUT_DIR', $cfg['Path']['data'].'tmp/cache/');
define('ASSET_COMPILE_URL_ROOT', '/'.$cfg['Path']['data'].'tmp/cache/');

$_SERVER['DOCUMENT_ROOT'] = './';

if (!defined('____SACY_BUNDLED')) {
    include_once $cfg['Path']['shared_class'].'sacy/sacy.php';
    include_once $cfg['Path']['shared_class'].'sacy/phpsass.php';
    include_once $cfg['Path']['shared_class'].'sacy/fragment-cache.php';
}

if (!(defined('ASSET_COMPILE_OUTPUT_DIR') && defined('ASSET_COMPILE_URL_ROOT'))) {
    throw new sacy\Exception('Failed to initialize because path configuration is not set (ASSET_COMPILE_OUTPUT_DIR and ASSET_COMPILE_URL_ROOT)');
}

function smarty_block_asset_compile($params, $content, &$template, &$repeat)
{
    if (!$repeat) {
        // don't shoot me, but all tried using the dom-parser and removing elements
        // ended up with problems due to the annoying DOM API and braindead stuff
        // like no getDocumentElement() or getElementByID() not working even though
        // loadHTML clearly knows that the content is in fact HTML.
        //
        // So, let's go back to good old regexps :-)

        $cfg = new sacy\Config($params);
        if ($cfg->getDebugMode() == 1) {
            return $content;
        }

        // Cache whole compile output
        $cache_key = 'sacy-cache-'.md5($content);
        if ($cfg->getDebugMode() == 0) {
            $patched_content = getCache($cache_key);

            if ($patched_content) {
                return $patched_content;
            }
        }

        $tag_pattern = '#\s*<\s*T(?:\s+(.*))?\s*(?:/>|>(.*)</T>)\s*#Uims';
        $tags = [];

        $aindex = 0;

        // first assembling all work. The idea is that, if sorted by descending
        // location offset, we can selectively remove tags.
        //
        // We'll need that to conditionally handle tags (like jTemplate's
        // <script type="text/html" that should remain)
        foreach (['link', 'style', 'script'] as $tag) {
            $p = str_replace('T', preg_quote($tag), $tag_pattern);
            if (preg_match_all($p, $content, $ms, PREG_OFFSET_CAPTURE)) {
                foreach ($ms[1] as $i => $m) {
                    $tags[] = [
                        'tag' => $tag,
                        'attrdata' => $m[0],
                        'index' => $ms[0][$i][1],
                        'tagdata' => $ms[0][$i][0],
                        'content' => $ms[2][$i][0] ?? null,
                        'page_order' => $aindex++,
                    ];
                }
            }
        }

        // now sort task list by descending location offset
        usort($tags, function ($a, $b) {
            if ($a['index'] == $b['index']) {
                return 0;
            }

            return ($a['index'] < $b['index']) ? 1 : -1;
        });
        $ex = new sacy\WorkUnitExtractor($cfg);
        $work_units = $ex->getAcceptedWorkUnits($tags);

        $renderer = new sacy\CacheRenderer($cfg, $_SERVER['SCRIPT_FILENAME']);
        $patched_content = $content;

        $render = [];
        $category = function ($work_unit) {
            return implode('', [$work_unit['group'], $work_unit['tag'], (bool) $work_unit['file']]);
        };
        $curr_cat = $work_units ? $category($work_units[0]) : null;

        $entry = null;
        foreach ($work_units as $i => $entry) {
            $cg = $category($entry);

            // the moment the category changes, render all we have so far
            // this makes it IMPERATIVE to keep links of the same category
            // together.
            if ($curr_cat != $cg || ($cfg->getDebugMode() == 3 && $i > 0 && $renderer->allowMergedTransformOnly($work_units[$i - 1]['tag']) && count($render))) {
                $render_order = array_reverse($render);
                $res = $renderer->renderWorkUnits($work_units[$i - 1]['tag'], $work_units[$i - 1]['group'], $render_order);
                if ($res === false) {
                    // rendering failed.
                    // because we don't know which one, we just enter emergency mode
                    // and return the initial content unharmed:
                    return $content;
                }
                // add rendered stuff to patched content
                $m = null;
                foreach ($render as $r) {
                    if ($m == null) {
                        $m = $r['position'];
                    }
                    if ($r['position'] < $m) {
                        $m = $r['position'];
                    }
                    // remove tag
                    $patched_content = substr_replace($patched_content, '', $r['position'], $r['length']);
                }
                // splice in replacement
                $patched_content = substr_replace($patched_content, $res, $m, 0);
                $curr_cat = $cg;
                $render = [$entry];
            } else {
                $render[] = $entry;
            }
        }
        $render_order = array_reverse($render);
        $res = '';
        if ($work_units) {
            $res = $renderer->renderWorkUnits($entry['tag'], $entry['group'], $render_order);
            if ($res === false) {
                // see last comment
                return $content;
            }
        }
        $m = 0;
        foreach ($render as $r) {
            if ($m == null) {
                $m = $r['position'];
            }
            if ($r['position'] < $m) {
                $m = $r['position'];
            }
            // remove tag
            $patched_content = substr_replace($patched_content, '', $r['position'], $r['length']);
        }
        $patched_content = substr_replace($patched_content, $res, $m, 0);

        if ($block_ref = $cfg->get('block_ref')) {
            $sacy = $template->smarty->getTemplateVars('sacy') ?: [];
            $rendered_assets = $sacy['rendered_assets'] ?: [];
            $rendered_assets[$block_ref] = array_merge(
                $rendered_assets[$block_ref] ?: [],
                $renderer->getRenderedAssets()
            );
            $sacy['rendered_assets'] = $rendered_assets;
            $template->smarty->assign('sacy', $sacy);
        }

        // Save content to cache
        setCache($cache_key, $patched_content);

        return $patched_content;
    }
}