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<?php |
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/** |
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* Plus WebP |
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* |
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* @package Plus WebP |
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* @subpackage PlusWebp Main function |
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/* Copyright (c) 2019- Katsushi Kawamori (email : dodesyoswift312@gmail.com) |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; version 2 of the License. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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|
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$pluswebp = new PlusWebp(); |
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|
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/** ================================================== |
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* Class Main function |
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* |
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* @since 1.00 |
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*/ |
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class PlusWebp { |
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|
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/** ================================================== |
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* Dir |
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* |
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* @var $upload_dir DIR. |
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*/ |
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private $upload_dir; |
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/** ================================================== |
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* Dir |
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* |
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* @var $upload_url URL. |
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*/ |
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private $upload_url; |
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/** ================================================== |
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* Dir |
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* |
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* @var $upload_path PATH. |
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*/ |
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private $upload_path; |
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|
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/** ================================================== |
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* Construct |
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* |
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* @since 1.00 |
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*/ |
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public function __construct() { |
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|
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list( $this->upload_dir, $this->upload_url, $this->upload_path ) = $this->upload_dir_url_path(); |
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|
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add_filter( 'wp_generate_attachment_metadata', array( $this, 'generate_webp' ), 10, 2 ); |
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|
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} |
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|
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/** ================================================== |
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* Webp generate |
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* |
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* @param array $metadata metadata. |
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* @param int $attachment_id ID. |
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* @return array $metadata metadata. |
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* @since 1.00 |
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*/ |
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public function generate_webp( $metadata, $attachment_id ) { |
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|
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$pluswebp_settings = get_option( 'pluswebp' ); |
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$replace = $pluswebp_settings['replace']; |
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|
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$mime_type = get_post_mime_type( $attachment_id ); |
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if ( 'image/jpeg' === $mime_type || 'image/png' === $mime_type || 'image/bmp' === $mime_type || 'image/gif' === $mime_type ) { |
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$metadata_webp = $metadata; |
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$file_webp = $this->change_ext( $metadata['file'], 'webp' ); |
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$metadata_webp['file'] = $file_webp; |
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foreach ( (array) $metadata['sizes'] as $key => $value ) { |
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$file_thumb = $value['file']; |
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$file_thumb_webp = $this->change_ext( $file_thumb, 'webp' ); |
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$path = $this->upload_dir . '/' . dirname( $file_webp ) . '/'; |
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$url = $this->upload_url . '/' . dirname( $file_webp ) . '/'; |
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$ret = $this->create_webp( $path . $file_thumb, $mime_type, $path . $file_thumb_webp ); |
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if ( $ret ) { |
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$metadata_webp['sizes'][ $key ]['file'] = $file_thumb_webp; |
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$metadata_webp['sizes'][ $key ]['mime-type'] = 'image/webp'; |
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if ( $replace ) { |
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unlink( $path . $file_thumb ); |
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$this->change_db( $url . $file_thumb, $url . $file_thumb_webp ); |
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} |
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} |
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} |
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|
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$ret = $this->create_webp( $this->upload_dir . '/' . $metadata['file'], $mime_type, $this->upload_dir . '/' . $file_webp ); |
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if ( $ret ) { |
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if ( $replace ) { |
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$up_post = array( |
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'ID' => $attachment_id, |
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'guid' => $this->upload_url . '/' . $file_webp, |
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'post_mime_type' => 'image/webp', |
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); |
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wp_update_post( $up_post ); |
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update_post_meta( $attachment_id, '_wp_attached_file', $file_webp ); |
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/* for bulk generate */ |
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update_post_meta( $attachment_id, '_wp_attachment_metadata', $metadata_webp ); |
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/* delete org file */ |
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unlink( $this->upload_dir . '/' . $metadata['file'] ); |
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/* Replace */ |
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$this->change_db( $this->upload_url . '/' . $metadata['file'], $this->upload_url . '/' . $file_webp ); |
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/* for hook */ |
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$metadata = $metadata_webp; |
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} else { |
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$post = get_post( $attachment_id ); |
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$title = get_the_title( $post ); |
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$attachment = array( |
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'guid' => $this->upload_url . '/' . $file_webp, |
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'post_mime_type' => 'image/webp', |
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'post_title' => $title, |
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'post_content' => '', |
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'post_status' => 'inherit', |
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); |
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$attach_id = wp_insert_attachment( $attachment, $this->upload_dir . '/' . $file_webp ); |
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wp_update_attachment_metadata( $attach_id, $metadata_webp ); |
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|
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$author = get_userdata( $post->post_author ); |
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$userid = $author->ID; |
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$postdate = get_the_date( 'Y-m-d H:i:s', $attachment_id ); |
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$postdategmt = get_gmt_from_date( $postdate ); |
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$up_post = array( |
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'ID' => $attach_id, |
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'post_author' => $userid, |
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'post_date' => $postdate, |
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'post_date_gmt' => $postdategmt, |
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'post_modified' => $postdate, |
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'post_modified_gmt' => $postdategmt, |
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); |
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wp_update_post( $up_post ); |
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} |
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} |
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} |
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|
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return $metadata; |
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|
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} |
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|
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/** ================================================== |
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* Webp create |
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* |
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* @param string $filename input filename for pictures. |
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* @param string $mime_type mimetype. |
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* @param string $filename_webp output filename for webp. |
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* @return bool $ret create bool. |
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* @since 1.00 |
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*/ |
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private function create_webp( $filename, $mime_type, $filename_webp ) { |
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|
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if ( ! file_exists( $filename ) ) { |
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return false; |
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} |
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if ( file_exists( $filename_webp ) ) { |
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return false; |
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} |
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|
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$pluswebp_settings = get_option( 'pluswebp' ); |
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@set_time_limit( 60 ); |
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|
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$ret = false; |
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switch ( $mime_type ) { |
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case 'image/jpeg': |
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$src = imagecreatefromjpeg( $filename ); |
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$img = imagecreatetruecolor( imagesx( $src ), imagesy( $src ) ); |
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imagefill( $img, 0, 0, imagecolorallocate( $img, 255, 255, 255 ) ); |
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imagealphablending( $img, true ); |
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break; |
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case 'image/png': |
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$src = imagecreatefrompng( $filename ); |
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$img = imagecreatetruecolor( imagesx( $src ), imagesy( $src ) ); |
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imagealphablending( $img, false ); |
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imagesavealpha( $img, true ); |
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break; |
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case 'image/bmp': |
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$src = imagecreatefrombmp( $filename ); |
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$img = imagecreatetruecolor( imagesx( $src ), imagesy( $src ) ); |
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break; |
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case 'image/gif': |
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$src = imagecreatefromgif( $filename ); |
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$img = imagecreatetruecolor( imagesx( $src ), imagesy( $src ) ); |
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$bgcolor = imagecolorallocatealpha( $img, 0, 0, 0, 127 ); |
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imagefill( $img, 0, 0, $bgcolor ); |
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imagecolortransparent( $img, $bgcolor ); |
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break; |
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} |
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|
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imagecopy( $img, $src, 0, 0, 0, 0, imagesx( $src ), imagesy( $src ) ); |
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imagedestroy( $src ); |
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$ret = imagewebp( $img, $filename_webp, $pluswebp_settings['quality'] ); |
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imagedestroy( $img ); |
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|
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return $ret; |
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|
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} |
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|
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/** ================================================== |
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* Change ext |
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* |
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* @param string $before_file_name before_file_name. |
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* @param string $ext ext. |
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* @return array $after_file_name after_file_name. |
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* @since 1.00 |
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*/ |
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private function change_ext( $before_file_name, $ext ) { |
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|
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$exts = explode( '.', $before_file_name ); |
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$before_ext = '.' . end( $exts ); |
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$after_ext = '.' . $ext; |
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$after_file_name = str_replace( $before_ext, $after_ext, $before_file_name ); |
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|
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return $after_file_name; |
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|
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} |
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|
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/** ================================================== |
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* Change DB |
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* |
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* @param string $before_url before_url. |
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* @param string $after_url after_url. |
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* @since 1.00 |
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*/ |
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private function change_db( $before_url, $after_url ) { |
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|
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global $wpdb; |
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|
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/* Replace */ |
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$wpdb->query( |
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$wpdb->prepare( |
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"UPDATE `$wpdb->posts` SET post_content = replace(post_content, %s, %s)", |
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$before_url, |
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$after_url |
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) |
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); |
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|
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} |
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|
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/** ================================================== |
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* Upload Path |
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* |
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* @return array $upload_dir,$upload_url,$upload_path uploadpath. |
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* @since 1.00 |
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*/ |
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public function upload_dir_url_path() { |
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|
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$wp_uploads = wp_upload_dir(); |
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|
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$relation_path_true = strpos( $wp_uploads['baseurl'], '../' ); |
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if ( $relation_path_true > 0 ) { |
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$relationalpath = substr( $wp_uploads['baseurl'], $relation_path_true ); |
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$basepath = substr( $wp_uploads['baseurl'], 0, $relation_path_true ); |
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$upload_url = $this->realurl( $basepath, $relationalpath ); |
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$upload_dir = wp_normalize_path( realpath( $wp_uploads['basedir'] ) ); |
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} else { |
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$upload_url = $wp_uploads['baseurl']; |
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$upload_dir = wp_normalize_path( $wp_uploads['basedir'] ); |
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} |
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|
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if ( is_ssl() ) { |
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$upload_url = str_replace( 'http:', 'https:', $upload_url ); |
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} |
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|
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if ( $relation_path_true > 0 ) { |
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$upload_path = $relationalpath; |
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} else { |
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$upload_path = str_replace( site_url( '/' ), '', $upload_url ); |
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} |
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|
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$upload_dir = untrailingslashit( $upload_dir ); |
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$upload_url = untrailingslashit( $upload_url ); |
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$upload_path = untrailingslashit( $upload_path ); |
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|
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return array( $upload_dir, $upload_url, $upload_path ); |
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|
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} |
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|
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} |
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|
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|
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|
