Commit inicial - WordPress Análisis de Precios Unitarios

- WordPress core y plugins
- Tema Twenty Twenty-Four configurado
- Plugin allow-unfiltered-html.php simplificado
- .gitignore configurado para excluir wp-config.php y uploads

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

wp-content/plugins/perfmatters/inc/classes/Preload.php

@@ -0,0 +1,359 @@
+<?php
+namespace Perfmatters;
+
+class Preload
+{
+    private static $fetch_priority;
+    private static $preloads;
+    private static $critical_images;
+    private static $preloads_ready = array();
+    private static $used_srcs = array();
+
+    //initialize preload functions
+    public static function init() 
+    {
+       add_action('wp', array('Perfmatters\Preload', 'queue'));
+    }
+
+    //queue functions
+    public static function queue() 
+    {
+        //fetch priority
+        self::$fetch_priority = apply_filters('perfmatters_fetch_priority', Config::$options['preload']['fetch_priority'] ?? array());
+
+        if(!empty(self::$fetch_priority)) {
+            add_action('perfmatters_output_buffer_template_redirect', array('Perfmatters\Preload', 'add_fetch_priority'));
+        }
+
+        //preloads
+        self::$preloads = apply_filters('perfmatters_preloads', Config::$options['preload']['preload'] ?? array());
+        self::$critical_images = apply_filters('perfmatters_preload_critical_images', Config::$options['preload']['critical_images'] ?? 0);
+
+        if(!empty(self::$preloads) || !empty(self::$critical_images)) {
+            add_action('perfmatters_output_buffer_template_redirect', array('Perfmatters\Preload', 'add_preloads'));
+        }
+    }
+
+    //add fetch priority
+    public static function add_fetch_priority($html) {
+
+        $selectors = array();
+        $parent_selectors = array();
+
+        foreach(self::$fetch_priority as $line) {
+
+            //device type check
+            if(!empty($line['device'])) {
+                $device_type = wp_is_mobile() ? 'mobile' : 'desktop';
+                if($line['device'] != $device_type) {
+                    continue;
+                }
+            }
+
+            //location check
+            if(!empty($line['locations'])) {
+                if(!self::location_check($line['locations'])) {
+                    continue;
+                }
+            }
+
+            //add selector
+            if(!empty($line['parent'])) {
+                $parent_selectors[] = $line['selector'];
+            }
+            else {
+                $selectors[] = $line['selector'];
+            }
+        }
+
+        //parent selectors
+        if(!empty($parent_selectors)) {
+
+            //match all selectors
+            preg_match_all('#<(div|section|figure)(\s[^>]*?(' . implode('|', $parent_selectors) . ').*?)>.*?<(link|img|script).*?<\/\g1>#is', $html, $parents, PREG_SET_ORDER);
+
+            if(!empty($parents)) {
+
+                foreach($parents as $parent) {
+
+                    //match all tags
+                    preg_match_all('#<(?>link|img|script)(\s[^>]*?)>#is', $parent[0], $tags, PREG_SET_ORDER);
+
+                    if(!empty($tags)) {
+
+                        //loop through images
+                        foreach($tags as $tag) {
+
+                            $tag_atts = Utilities::get_atts_array($tag[1]);
+
+                            $key = array_search($parent[2], array_column(self::$fetch_priority, 'selector'));
+
+                            $tag_atts['fetchpriority'] = self::$fetch_priority[$key]['priority'];;
+
+                            //replace video attributes string
+                            $new_tag = str_replace($tag[1], ' ' . Utilities::get_atts_string($tag_atts), $tag[0]);
+
+                            //replace video with placeholder
+                            $html = str_replace($tag[0], $new_tag, $html);
+
+                            unset($new_tag);
+                        }
+                    }
+                }
+            }
+        }
+
+        //selectors
+        if(!empty($selectors)) {
+
+            preg_match_all('#<(?>link|img|script)(\s[^>]*?(' . implode('|', $selectors) . ').*?)>#is', $html, $matches, PREG_SET_ORDER);
+
+            if(!empty($matches)) {
+
+                foreach($matches as $tag) {
+
+                    $atts = Utilities::get_atts_array($tag[1]);
+
+                    $key = array_search($tag[2], array_column(self::$fetch_priority, 'selector'));
+
+                    $atts['fetchpriority'] = self::$fetch_priority[$key]['priority'];;
+
+                    //replace video attributes string
+                    $new_tag = str_replace($tag[1], ' ' . Utilities::get_atts_string($atts), $tag[0]);
+
+                    //replace video with placeholder
+                    $html = str_replace($tag[0], $new_tag, $html);
+                }
+            }
+        }
+
+        return $html;
+    }
+
+    //add preloads to html
+    public static function add_preloads($html) {
+
+        if(!empty(self::$critical_images)) {
+            self::add_critical_image_preloads($html, Utilities::clean_html($html));
+        }
+
+        if(!empty(self::$preloads)) {
+
+            $mime_types = array(
+                'svg'   => 'image/svg+xml',
+                'ttf'   => 'font/ttf',
+                'otf'   => 'font/otf',
+                'woff'  => 'font/woff',
+                'woff2' => 'font/woff2',
+                'eot'   => 'application/vnd.ms-fontobject',
+                'sfnt'  => 'font/sfnt'
+            );
+
+            foreach(self::$preloads as $line) {
+
+                //device type check
+                if(!empty($line['device'])) {
+                    $device_type = wp_is_mobile() ? 'mobile' : 'desktop';
+                    if($line['device'] != $device_type) {
+                        continue;
+                    }
+                }
+
+                //location check
+                if(!empty($line['locations'])) {
+
+                    if(!self::location_check($line['locations'])) {
+                        continue;
+                    }
+                }
+
+                $mime_type = "";
+
+                if(!empty($line['as']) && $line['as'] == 'font') {
+                    $path_info = pathinfo($line['url']);
+                    $mime_type = !empty($path_info['extension']) && isset($mime_types[$path_info['extension']]) ? $mime_types[$path_info['extension']] : "";
+                }
+
+                //print script/style handle as preload
+                if(!empty($line['as']) && in_array($line['as'], array('script', 'style'))) {
+                    if(strpos($line['url'], '.') === false) {
+
+                        global $wp_scripts;
+                        global $wp_styles;
+
+                        $scripts_arr = $line['as'] == 'script' ? $wp_scripts : $wp_styles;
+
+                        if(!empty($scripts_arr)) {
+                            $scripts_arr = $scripts_arr->registered;
+
+                            if(array_key_exists($line['url'], $scripts_arr)) {
+
+                                $url = $scripts_arr[$line['url']]->src;
+
+                                $parsed_url = parse_url($scripts_arr[$line['url']]->src);
+                                if(empty($parsed_url['host'])) {
+                                    $url = site_url($url);
+                                }
+
+                                if(strpos($url, '?') === false) {
+
+                                    $ver = $scripts_arr[$line['url']]->ver;
+
+                                    if(empty($ver)) {
+                                        $ver = get_bloginfo('version');
+                                    }
+                                }
+
+                                $line['url'] = $url . (!empty($ver) ? '?ver=' . $ver : '');
+                            }
+                            else {
+                                continue;
+                            }
+                        }
+                        else {
+                            continue;
+                        }
+                    }
+                }
+
+                $preload = "<link rel='preload' href='" . $line['url'] . "'" . (!empty($line['as']) ? " as='" . $line['as'] . "'" : "") . (!empty($mime_type) ? " type='" . $mime_type . "'" : "") . (!empty($line['crossorigin']) ? " crossorigin" : "") . (!empty($line['as']) && $line['as'] == 'style' ? " onload=\"this.rel='stylesheet';this.removeAttribute('onload');\"" : "") . ">";
+
+                if($line['as'] == 'image') {
+                    array_unshift(self::$preloads_ready, $preload);
+                }
+                else {
+                    self::$preloads_ready[] = $preload;
+                }
+            }
+        }
+
+        if(!empty(self::$preloads_ready)) {
+            $preloads_string = "";
+            foreach(apply_filters('perfmatters_preloads_ready', self::$preloads_ready) as $preload) {
+                $preloads_string.= $preload;
+            }
+            $pos = strpos($html, '</title>');
+            if($pos !== false) {
+                $html = substr_replace($html, '</title>' . $preloads_string, $pos, 8);
+            }
+        }
+        
+        return $html;
+    }
+
+    //add critical image preloads
+    public static function add_critical_image_preloads(&$html, $clean_html) {
+
+        //match all image formats
+        preg_match_all('#(<picture.*?)?<img([^>]+?)\/?>(?><\/picture>)?#is', $clean_html, $matches, PREG_SET_ORDER);
+
+        if(!empty($matches)) {
+
+            $exclusions = apply_filters('perfmatters_critical_image_exclusions', array(
+                ';base64',
+                'w3.org'
+            ));
+
+            $count = 0;
+            
+            foreach($matches as $match) {
+
+                if($count >= self::$critical_images) {
+                    break;
+                }
+
+                if(strpos($match[0], 'secure.gravatar.com') !== false) {
+                    continue;
+                }
+
+                if(!empty($exclusions) && is_array($exclusions)) {
+                    foreach($exclusions as $exclusion) {
+                        if(strpos($match[0], $exclusion) !== false) {
+                            continue 2;
+                        }
+                    }
+                }
+
+                //picture tag
+                if(!empty($match[1])) {
+                    preg_match('#<source([^>]+?image\/(webp|avif)[^>]+?)\/?>#is', $match[0], $source);
+
+                    if(!empty($source)) {
+                        if(self::generate_critical_image_preload($source[1])) {
+                            $new_picture = str_replace('<picture', '<picture data-perfmatters-preload', $match[0]);
+                            $new_picture = str_replace('<img', '<img data-perfmatters-preload', $new_picture);
+                            $html = str_replace($match[0], $new_picture, $html);
+                            $count++;
+                        }
+                        continue;
+                    }
+                }
+
+                //img tag
+                if(!empty($match[2])) {
+                    if(self::generate_critical_image_preload($match[2])) {
+                        $new_image = str_replace('<img', '<img data-perfmatters-preload', $match[0]);
+                        $html = str_replace($match[0], $new_image, $html);
+                        $count++;
+                    }
+                }
+            }
+        }
+
+        if(!empty(self::$preloads_ready)) {
+            ksort(self::$preloads_ready);
+        }
+    }
+
+    //generate preload link from att string
+    private static function generate_critical_image_preload($att_string) {
+        if(!empty($att_string)) {
+            $atts = Utilities::get_atts_array($att_string);
+            $src = $atts['data-src'] ?? $atts['src'] ?? '';
+
+            //dont add if src was already used
+            if(in_array($src, self::$used_srcs)) {
+                return false;
+            }
+
+            //generate preload
+            self::$preloads_ready[] = '<link rel="preload" href="' . $src . '" as="image"' . (!empty($atts['srcset']) ? ' imagesrcset="' . $atts['srcset'] . '"' : '') . (!empty($atts['sizes']) ? ' imagesizes="' . $atts['sizes'] . '"' : '') . ' />';
+
+            //mark src used and return
+            if(!empty($src)) {
+                self::$used_srcs[] = $src;
+            }
+            return true;
+        }
+    }
+
+    private static function location_check($locations) {
+
+        $location_match = false;
+
+        $exploded_locations = explode(',', $locations);
+        $trimmed_locations = array_map('trim', $exploded_locations);
+
+        //single post exclusion
+        if(is_singular()) {
+            global $post;
+            if(in_array($post->ID, $trimmed_locations)) {
+                $location_match = true;
+            }
+        }
+        //posts page exclusion
+        elseif(is_home() && in_array('blog', $trimmed_locations)) {
+            $location_match = true;
+        }
+        elseif(is_archive()) {
+            //woocommerce shop check
+            if(function_exists('is_shop') && is_shop()) {
+                if(in_array(wc_get_page_id('shop'), $trimmed_locations)) {
+                    $location_match = true;
+                }
+            }
+        }
+
+        return $location_match;
+    }
+}