Your IP : 18.219.4.174
<?php
/**
* Init
*/
function zem_rp_add_image_sizes() {
$platform_options = zem_rp_get_platform_options();
add_image_size(ZEM_RP_THUMBNAILS_NAME, ZEM_RP_THUMBNAILS_WIDTH, ZEM_RP_THUMBNAILS_HEIGHT, true);
if ($platform_options['theme_name'] == 'pinterest.css') {
add_image_size(ZEM_RP_THUMBNAILS_PROP_NAME, ZEM_RP_THUMBNAILS_WIDTH, 0, false);
}
if ($platform_options['custom_size_thumbnail_enabled']) {
add_image_size(ZEM_RP_THUMBNAILS_NAME, $platform_options['custom_thumbnail_width'], $platform_options['custom_thumbnail_height'], true);
}
}
add_action('init', 'zem_rp_add_image_sizes');
/**
* Settings - replace default thumbnail
*/
function zem_rp_upload_default_thumbnail_file() {
if (empty($_FILES['zem_rp_default_thumbnail'])) {
return new WP_Error('upload_error');
}
$file = $_FILES['zem_rp_default_thumbnail'];
if(isset($file['error']) && $file['error'] === UPLOAD_ERR_NO_FILE) {
return false;
}
if ($image_id = media_handle_upload('zem_rp_default_thumbnail', 0)) {
$image_data = zem_rp_get_image_data($image_id);
$platform_options = zem_rp_get_platform_options();
$img_width = $platform_options['custom_size_thumbnail_enabled'] ? $platform_options['custom_thumbnail_width'] : ZEM_RP_THUMBNAILS_WIDTH;
$img_height = $platform_options['custom_size_thumbnail_enabled'] ? $platform_options['custom_thumbnail_height'] : ZEM_RP_THUMBNAILS_HEIGHT;
if ($image = zem_rp_get_image_with_exact_size($image_data, array($img_width, $img_height))) {
$upload_dir = wp_upload_dir();
return $upload_dir['url'] . '/' . $image['file'];
}
}
return new WP_Error('upload_error');
}
/**
* Cron - Thumbnail extraction
*/
function zem_rp_upload_attachment($url, $post_id) {
/* Parts copied from wp-admin/includes/media.php:media_sideload_image */
include_once(ABSPATH . 'wp-admin/includes/file.php');
include_once(ABSPATH . 'wp-admin/includes/media.php');
include_once(ABSPATH . 'wp-admin/includes/image.php');
$tmp = download_url($url);
preg_match( '/[^\?]+\.(jpe?g|jpe|gif|png)\b/i', $url, $matches);
if(! $matches) return;
$file_array['name'] = sanitize_file_name(urldecode(basename($matches[0])));
$file_array['tmp_name'] = $tmp;
if (is_wp_error($tmp)) {
@unlink($file_array['tmp_name']);
return false;
}
$post_data = array(
'guid' => $url,
'post_title' => 'rp_' . $file_array['name'],
);
$attachment_id = media_handle_sideload($file_array, $post_id, null, $post_data);
if (is_wp_error($attachment_id)) {
@unlink($file_array['tmp_name']);
return false;
}
$attach_data = wp_get_attachment_metadata($attachment_id);
$platform_options = zem_rp_get_platform_options();
$min_width = $platform_options['custom_size_thumbnail_enabled'] ? $platform_options['custom_size_thumbnail_width'] : ZEM_RP_THUMBNAILS_WIDTH;
$min_height = $platform_options['custom_size_thumbnail_enabled'] ? $platform_options['custom_size_thumbnail_height'] : ZEM_RP_THUMBNAILS_HEIGHT;
if (!$attach_data || $attach_data['width'] < $min_width || $attach_data['height'] < $min_height) {
wp_delete_attachment($attachment_id);
return false;
}
return $attachment_id;
}
function zem_rp_get_image_from_img_tag($post_id, $url, $img_tag) {
if (($attachment_id = zem_rp_attachment_url_to_postid($url)) || ($attachment_id = zem_rp_img_html_to_post_id($img_tag))) {
if (zem_rp_update_attachment_id($attachment_id)) {
return $attachment_id;
}
}
return zem_rp_upload_attachment($url, $post_id);
}
function zem_rp_actually_extract_images_from_post_html($post) {
$content = $post->post_content;
if (!preg_match_all('#' . zem_rp_get_tag_regex('img') . '#i', $content, $matches) || empty($matches)) {
return false;
}
$html_tags = $matches[0];
$attachment_id = false;
if(count($html_tags) == 0) {
return false;
}
array_splice($html_tags, 10);
foreach ($html_tags as $html_tag) {
if (preg_match('#src=([\'"])(.+?)\1#is', $html_tag, $matches) && !empty($matches)) {
$url = $matches[2];
if (substr($url, 0, 2) == '//') { $url = "http:$url"; }
$attachment_id = zem_rp_get_image_from_img_tag($post->ID, $url, $html_tag);
if ($attachment_id) {
break;
}
}
}
return $attachment_id;
}
function zem_rp_update_attachment_id($attachment_id) {
include_once(ABSPATH . 'wp-admin/includes/image.php');
$img_path = get_attached_file($attachment_id);
if (!$img_path) { return false; }
$attach_data = wp_generate_attachment_metadata($attachment_id, $img_path);
wp_update_attachment_metadata($attachment_id, $attach_data);
return $attachment_id;
}
function zem_rp_cron_do_extract_images_from_post($post_id, $attachment_id) {
// Prevent multiple thumbnail extractions for a single post
if (get_post_meta($post_id, '_zem_rp_image', true) !== '') { return; }
$post_id = str_replace("in_", "", "$post_id");
$post_id = (int) $post_id;
$attachment_id = (int) $attachment_id;
$post = get_post($post_id);
if ($attachment_id) {
$new_attachment_id = zem_rp_update_attachment_id($attachment_id);
} else {
$new_attachment_id = zem_rp_actually_extract_images_from_post_html($post);
}
if ($new_attachment_id) {
update_post_meta($post_id, '_zem_rp_image', $new_attachment_id);
} else {
update_post_meta($post_id, '_zem_rp_image', 'empty');
}
}
add_action('zem_rp_cron_extract_images_from_post', 'zem_rp_cron_do_extract_images_from_post', 10, 2);
function zem_rp_extract_images_from_post($post, $attachment_id=null) {
//WP quirk: posts can have an image, but still no attachment
//if(empty($post->post_content) && !$attachment_id) { return; }
if(empty($post->post_content) ) { return; }
$post_id = str_replace("in_", "", "$post->ID");
delete_post_meta($post_id, '_zem_rp_image');
wp_schedule_single_event(time(), 'zem_rp_cron_extract_images_from_post', array($post_id, $attachment_id));
}
/**
* Update images on post save
*/
function zem_rp_post_save_update_image($post_id) {
$post = get_post($post_id);
if(empty($post->post_content) || $post->post_status !== 'publish' || $post->post_type === 'page' || $post->post_type === 'attachment' || $post->post_type === 'nav_menu_item') {
return;
}
delete_post_meta($post->ID, '_zem_rp_image');
zem_rp_get_post_thumbnail_img($post);
}
add_action('save_post', 'zem_rp_post_save_update_image');
/**
* Get thumbnails when post is displayed
*/
function zem_rp_get_img_tag($src, $alt, $size=null) {
if (!$size || !is_array($size)) {
$size = array(ZEM_RP_THUMBNAILS_WIDTH, ZEM_RP_THUMBNAILS_HEIGHT);
}
$size_attr = ($size[0] ? ('width="' . $size[0] . '" ') : '');
if ($size[1]) {
$size_attr .= 'height="' . $size[1] . '" ';
}
return '<img src="'. esc_attr($src) . '" alt="' . esc_attr($alt) . '" '.$size_attr.' />';
}
function zem_rp_get_default_thumbnail_url($seed = false, $size = 'thumbnail') {
$options = zem_rp_get_options();
$upload_dir = wp_upload_dir();
$seed = (int)$seed;
if ($options['default_thumbnail_path']) {
return $options['default_thumbnail_path'];
} else {
if ($seed) {
$next_seed = rand();
srand($seed);
}
$file = rand(0, ZEM_RP_THUMBNAILS_DEFAULTS_COUNT - 1) . '.jpg';
if ($seed) {
srand($next_seed);
}
return get_template_directory_uri() . '/plugins/related-posts-by-zemanta/static/thumbs/1.jpg';
}
}
function zem_rp_get_image_with_exact_size($image_data, $size) {
# Partially copied from wp-include/media.php image_get_intermediate_size and image_downsize
if (!$image_data) { return false; }
$platform_options = zem_rp_get_platform_options();
$img_url = wp_get_attachment_url($image_data['id']);
$img_url_basename = wp_basename($img_url);
$pinterest = $size[1] === 0;
// Calculate exact dimensions for proportional images
if (!$size[0]) { $size[0] = (int) ($image_data['data']['width'] / $image_data['data']['height'] * $size[1]); }
if (!$size[1]) { $size[1] = (int) ($image_data['data']['height'] / $image_data['data']['width'] * $size[0]); }
if (!$image_data['data']['sizes']) {
$w = $image_data['data']['width'];
$h = $image_data['data']['height'];
$thumb_width = $platform_options['custom_size_thumbnail_enabled'] ? $platform_options['custom_thumbnail_width'] : ZEM_RP_THUMBNAILS_WIDTH;
$thumb_height = $platform_options['custom_size_thumbnail_enabled'] ? $platform_options['custom_thumbnail_height'] : ZEM_RP_THUMBNAILS_HEIGHT;
if ($w == $thumb_width && $h == $thumb_height) {
$file = explode("/", $image_data['data']['file']);
$file = $file[count($file) - 1];
$img_url = str_replace($img_url_basename, wp_basename($file), $img_url);
return array(
'url' => $img_url,
'file' => $file,
'width' => $w,
'height' => $h
);
}
}
foreach ($image_data['data']['sizes'] as $_size => $data) {
// width and height can be both string and integers. WordPress..
$width_ok = ($size[0] == $data['width']);
// Pinterest fix (don't match exact sizes, we could be wrong
if ($pinterest) {
$height_ok = ($size[1] < $data['height'] + 5) && ($size[1] > $data['height'] - 5);
} else {
$height_ok = ($size[1] == $data['height']);
}
if ($width_ok && $height_ok) {
$file = $data['file'];
$img_url = str_replace($img_url_basename, wp_basename($file), $img_url);
return array(
'url' => $img_url,
'file' => $data['file'],
'width' => $data['width'],
'height' => $data['height']
);
}
}
return false;
}
function zem_rp_get_image_data($image_id) {
if (!$image_id || is_wp_error($image_id)) { return false; }
$imagedata = wp_get_attachment_metadata($image_id);
if (!$imagedata || !is_array($imagedata) || !isset($imagedata['sizes']) || !is_array($imagedata['sizes'])) {
return false;
}
return array(
'id' => $image_id,
'data' => $imagedata
);
}
function zem_rp_get_attached_img_url($related_post, $size) {
$post_id = str_replace("in_", "", "$related_post->ID");
$extracted_image = get_post_meta($post_id, '_zem_rp_image', true);
if ($extracted_image === 'empty') {
return false;
}
$image_data = zem_rp_get_image_data((int)$extracted_image);
if (!$image_data && $extracted_image) {
// image_id in the db is incorrect
delete_post_meta($post_id, '_zem_rp_image');
}
if (!$image_data && has_post_thumbnail($post_id)) {
$image_data = zem_rp_get_image_data(get_post_thumbnail_id($post_id));
}
if (!$image_data && function_exists('get_post_format_meta') && function_exists('img_html_to_post_id')) {
// WP 3.6 Image post format. Check wp-includes/media.php:get_the_post_format_image for the reference.
$meta = get_post_format_meta($post_id);
if (!empty($meta['image'])) {
if (is_numeric($meta['image'])) {
$image_id = absint($meta['image']);
} else {
$image_id = img_html_to_post_id($meta['image']);
}
$image_data = zem_rp_get_image_data($image_id);
}
}
if (!$image_data) {
zem_rp_extract_images_from_post($related_post);
return false;
}
if ($img_src = zem_rp_get_image_with_exact_size($image_data, $size)) {
return $img_src['url'];
}
zem_rp_extract_images_from_post($related_post, $image_data['id']);
return false;
}
function zem_rp_get_thumbnail_size_array($size) {
$platform_options = zem_rp_get_platform_options();
if (!$size || $size === 'thumbnail') {
if ($platform_options['custom_size_thumbnail_enabled']) {
return array($platform_options['custom_thumbnail_width'], $platform_options['custom_thumbnail_height']);
}
return array(ZEM_RP_THUMBNAILS_WIDTH, ZEM_RP_THUMBNAILS_HEIGHT);
}
if ($size == 'full') {
return array(ZEM_RP_THUMBNAILS_WIDTH, 0);
}
if (is_array($size)) {
return $size;
}
return false;
}
function zem_rp_get_post_thumbnail_img($related_post, $size = null, $force = false) {
$options = zem_rp_get_options();
$platform_options = zem_rp_get_platform_options();
if (!($platform_options["display_thumbnail"] || $force)) {
return false;
}
$post_id = str_replace("in_", "", "$related_post->ID");
$post_title = wptexturize($related_post->post_title);
$size = zem_rp_get_thumbnail_size_array($size);
if (!$size) { return false; }
if ($options['thumbnail_use_custom']) {
$thumbnail_src = get_post_meta($post_id, $options["thumbnail_custom_field"], true);
if ($thumbnail_src) {
return zem_rp_get_img_tag($thumbnail_src, $post_title, $size);
}
}
$featured_image = get_post_thumbnail_id($post_id);
if ($featured_image) {
$featured_image_data = zem_rp_get_image_data($featured_image);
$featured_image_thumb = zem_rp_get_image_with_exact_size($featured_image_data, $size);
if ($featured_image_thumb) {
return zem_rp_get_img_tag($featured_image_thumb["url"],
$post_title, $size);
} else {
return get_the_post_thumbnail($post_id, $size);
}
}
$attached_img_url = zem_rp_get_attached_img_url($related_post, $size);
if ($attached_img_url) {
return zem_rp_get_img_tag($attached_img_url, $post_title, $size);
}
return zem_rp_get_img_tag(zem_rp_get_default_thumbnail_url($related_post->ID, $size), $post_title, $size);
}
function zem_rp_process_latest_post_thumbnails() {
$latest_posts = get_posts(array('numberposts' => ZEM_RP_THUMBNAILS_NUM_PREGENERATED_POSTS));
foreach ($latest_posts as $post) {
zem_rp_get_post_thumbnail_img($post);
}
}
/**
* Helpers
* Mostly! copied from WordPress 3.6 wp-includes/media.php and functions.php
*/
function zem_rp_get_tag_regex( $tag ) {
if ( empty( $tag ) )
return;
return sprintf( '<%1$s[^<]*(?:>[\s\S]*<\/%1$s>|\s*\/?>)', tag_escape( $tag ) ); // Added the last ?
}
function zem_rp_img_html_to_post_id( $html, &$matched_html = null ) {
$attachment_id = 0;
// Look for an <img /> tag
if ( ! preg_match( '#' . zem_rp_get_tag_regex( 'img' ) . '#i', $html, $matches ) || empty( $matches ) )
return $attachment_id;
$matched_html = $matches[0];
// Look for attributes.
if ( ! preg_match_all( '#class=([\'"])(.+?)\1#is', $matched_html, $matches ) || empty( $matches ) )
return $attachment_id;
$img_class = $matches[2][0];
if ( ! $attachment_id && ! empty( $img_class ) && false !== strpos( $img_class, 'wp-image-' ) )
if ( preg_match( '#wp-image-([0-9]+)#i', $img_class, $matches ) )
$attachment_id = absint( $matches[1] );
return $attachment_id;
}
function zem_rp_attachment_url_to_postid( $url ) {
global $wpdb;
if ( preg_match( '#\.[a-zA-Z0-9]+$#', $url ) ) {
$id = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_type = 'attachment' " .
"AND guid = %s", $url ) );
if ( ! empty( $id ) )
return (int) $id;
}
return 0;
}