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<?php
namespace Imagify\Optimization;
use Imagify_Requirements;
/**
* A generic optimization class focussed on the file itself.
*
* @since 1.9
* @author Grégory Viguier
*/
class File {
/**
* Absolute path to the file.
*
* @var string
* @since 1.9
* @author Grégory Viguier
*/
protected $path;
/**
* Tell if the file is an image.
*
* @var bool
* @since 1.9
* @see $this->is_image()
* @author Grégory Viguier
*/
protected $is_image;
/**
* Store the file mime type + file extension (if the file is supported).
*
* @var array
* @since 1.9
* @see $this->get_file_type()
* @author Grégory Viguier
*/
protected $file_type;
/**
* Filesystem object.
*
* @var \Imagify_Filesystem
* @since 1.9
* @author Grégory Viguier
*/
protected $filesystem;
/**
* The editor instance used to resize the file.
*
* @var \WP_Image_Editor_Imagick|\WP_Image_Editor_GD|WP_Error.
* @since 1.9
* @author Grégory Viguier
*/
protected $editor;
/**
* Used to cache the plugin’s options.
*
* @var array
* @since 1.9
* @author Grégory Viguier
*/
protected $options = [];
/**
* The constructor.
*
* @since 1.9
* @author Grégory Viguier
*
* @param string $file_path Absolute path to the file.
*/
public function __construct( $file_path ) {
$this->path = $file_path;
$this->filesystem = \Imagify_Filesystem::get_instance();
}
/**
* Tell if the file is valid.
*
* @since 1.9
* @author Grégory Viguier
*
* @return bool
*/
public function is_valid() {
return (bool) $this->path;
}
/**
* Tell if the file can be processed.
*
* @since 1.9
* @author Grégory Viguier
*
* @return bool|WP_Error
*/
public function can_be_processed() {
if ( ! $this->path ) {
return new \WP_Error( 'empty_path', __( 'File path is empty.', 'imagify' ) );
}
if ( ! empty( $this->filesystem->errors->errors ) ) {
return new \WP_Error( 'filesystem_error', __( 'Filesystem error.', 'imagify' ), $this->filesystem->errors );
}
if ( ! $this->filesystem->exists( $this->path ) ) {
return new \WP_Error(
'not_exists',
sprintf(
/* translators: %s is a file path. */
__( 'The file %s does not seem to exist.', 'imagify' ),
'<code>' . esc_html( $this->filesystem->make_path_relative( $this->path ) ) . '</code>'
)
);
}
if ( ! $this->filesystem->is_file( $this->path ) ) {
return new \WP_Error(
'not_a_file',
sprintf(
/* translators: %s is a file path. */
__( 'This does not seem to be a file: %s.', 'imagify' ),
'<code>' . esc_html( $this->filesystem->make_path_relative( $this->path ) ) . '</code>'
)
);
}
if ( ! $this->filesystem->is_writable( $this->path ) ) {
return new \WP_Error(
'not_writable',
sprintf(
/* translators: %s is a file path. */
__( 'The file %s does not seem to be writable.', 'imagify' ),
'<code>' . esc_html( $this->filesystem->make_path_relative( $this->path ) ) . '</code>'
)
);
}
$parent_folder = $this->filesystem->dir_path( $this->path );
if ( ! $this->filesystem->is_writable( $parent_folder ) ) {
return new \WP_Error(
'folder_not_writable',
sprintf(
/* translators: %s is a file path. */
__( 'The folder %s does not seem to be writable.', 'imagify' ),
'<code>' . esc_html( $this->filesystem->make_path_relative( $parent_folder ) ) . '</code>'
)
);
}
return true;
}
/** ----------------------------------------------------------------------------------------- */
/** EDITION ================================================================================= */
/** ----------------------------------------------------------------------------------------- */
/**
* Resize (and rotate) an image if it is bigger than the maximum width provided.
*
* @since 1.9
* @author Grégory Viguier
* @author Remy Perona
*
* @param array $dimensions {
* Array of image dimensions.
*
* @type int $width The image width.
* @type int $height The image height.
* }
* @param int $max_width Maximum width to resize to.
* @return string|WP_Error Path the the resized image. A WP_Error object on failure.
*/
public function resize( $dimensions = [], $max_width = 0 ) {
$can_be_processed = $this->can_be_processed();
if ( is_wp_error( $can_be_processed ) ) {
return $can_be_processed;
}
if ( ! $max_width ) {
return new \WP_Error(
'no_resizing_threshold',
__( 'No threshold provided for resizing.', 'imagify' )
);
}
if ( ! $this->is_image() ) {
return new \WP_Error(
'not_an_image',
sprintf(
/* translators: %s is a file path. */
__( 'The file %s does not seem to be an image, and cannot be resized.', 'imagify' ),
'<code>' . esc_html( $this->filesystem->make_path_relative( $this->path ) ) . '</code>'
)
);
}
$editor = $this->get_editor();
if ( is_wp_error( $editor ) ) {
return $editor;
}
// Try to correct the auto-rotation if the info is available.
if ( $this->filesystem->can_get_exif() && 'image/jpeg' === $this->get_mime_type() ) {
$exif = $this->filesystem->get_image_exif( $this->path );
$orientation = isset( $exif['Orientation'] ) ? (int) $exif['Orientation'] : 1;
switch ( $orientation ) {
case 2:
// Flip horizontally.
$editor->flip( true, false );
break;
case 3:
// Rotate 180 degrees or flip horizontally and vertically.
// Flipping seems faster/uses less resources.
$editor->flip( true, true );
break;
case 4:
// Flip vertically.
$editor->flip( false, true );
break;
case 5:
// Rotate 90 degrees counter-clockwise and flip vertically.
$result = $editor->rotate( 90 );
if ( ! is_wp_error( $result ) ) {
$editor->flip( false, true );
}
break;
case 6:
// Rotate 90 degrees clockwise (270 counter-clockwise).
$editor->rotate( 270 );
break;
case 7:
// Rotate 90 degrees counter-clockwise and flip horizontally.
$result = $editor->rotate( 90 );
if ( ! is_wp_error( $result ) ) {
$editor->flip( true, false );
}
break;
case 8:
// Rotate 90 degrees counter-clockwise.
$editor->rotate( 90 );
break;
}
}
if ( ! $dimensions ) {
$dimensions = $this->get_dimensions();
}
// Prevent removal of the exif data when resizing (only works with Imagick).
add_filter( 'image_strip_meta', '__return_false', 789 );
// Resize.
$new_sizes = wp_constrain_dimensions( $dimensions['width'], $dimensions['height'], $max_width );
$resized = $editor->resize( $new_sizes[0], $new_sizes[1], false );
// Remove the filter when we're done to prevent any conflict.
remove_filter( 'image_strip_meta', '__return_false', 789 );
if ( is_wp_error( $resized ) ) {
return $resized;
}
$resized_image_path = $editor->generate_filename( 'imagifyresized' );
$resized_image_saved = $editor->save( $resized_image_path );
if ( is_wp_error( $resized_image_saved ) ) {
return $resized_image_saved;
}
return $resized_image_path;
}
/**
* Create a thumbnail.
* Warning: If the destination file already exists, it will be overwritten.
*
* @since 1.9
* @author Grégory Viguier
*
* @param array $destination {
* The thumbnail data.
*
* @type string $path Path to the destination file.
* @type int $width The image width.
* @type int $height The image height.
* @type bool $crop True to crop, false to resize.
* @type bool $adjust_filename True to adjust the file name like what `$editor->multi_resize()` returns, like WP default behavior (default). False to prevent it, and use the file name from $path instead.
* }
* @return bool|array|WP_Error {
* A WP_Error object on error. True if the file exists.
* An array of thumbnail data if the file has just been created:
*
* @type string $file File name.
* @type int $width The image width.
* @type int $height The image height.
* @type string $mime-type The mime type.
* }
*/
public function create_thumbnail( $destination ) {
$can_be_processed = $this->can_be_processed();
if ( is_wp_error( $can_be_processed ) ) {
return $can_be_processed;
}
if ( ! $this->is_image() ) {
return new \WP_Error(
'not_an_image',
sprintf(
/* translators: %s is a file path. */
__( 'The file %s does not seem to be an image, and cannot be resized.', 'imagify' ),
'<code>' . esc_html( $this->filesystem->make_path_relative( $this->path ) ) . '</code>'
)
);
}
$editor = $this->get_editor();
if ( is_wp_error( $editor ) ) {
return $editor;
}
// Create the file.
$result = $editor->multi_resize( [ $destination ] );
if ( ! $result ) {
return new \WP_Error( 'image_resize_error', __( 'The thumbnail could not be created.', 'imagify' ) );
}
$result = reset( $result );
$filename = $result['file'];
$source_thumb_path = $this->filesystem->dir_path( $this->path ) . $filename;
if ( ! isset( $destination['adjust_filename'] ) || $destination['adjust_filename'] ) {
// The file name can change from what we expected (1px wider, etc), let's use the resulting data to move the file to the right place.
$destination_thumb_path = $this->filesystem->dir_path( $destination['path'] ) . $filename;
} else {
// Respect what is set in $path.
$destination_thumb_path = $destination['path'];
$result['file'] = $this->filesystem->file_name( $destination['path'] );
}
if ( $source_thumb_path === $destination_thumb_path ) {
return $result;
}
$moved = $this->filesystem->move( $source_thumb_path, $destination_thumb_path, true );
if ( ! $moved ) {
return new \WP_Error( 'move_error', __( 'The file could not be moved to its final destination.', 'imagify' ) );
}
return $result;
}
/**
* Backup a file.
*
* @since 1.9
* @since 1.9.8 Added $backup_source argument.
* @author Grégory Viguier
*
* @param string $backup_path The backup path.
* @param string $backup_source Path to the file to backup. This is useful in WP 5.3+ when we want to optimize the full size: in that case we need to backup the original file.
* @return bool|WP_Error True on success. False if the backup option is disabled. A WP_Error object on failure.
*/
public function backup( $backup_path = null, $backup_source = null ) {
$can_be_processed = $this->can_be_processed();
if ( is_wp_error( $can_be_processed ) ) {
return $can_be_processed;
}
// Make sure the backups directory has no errors.
if ( ! $backup_path ) {
return new \WP_Error( 'wp_upload_error', __( 'Error while retrieving the backups directory path.', 'imagify' ) );
}
// Create sub-directories.
$created = $this->filesystem->make_dir( $this->filesystem->dir_path( $backup_path ) );
if ( ! $created ) {
return new \WP_Error( 'backup_dir_not_writable', __( 'The backup directory is not writable.', 'imagify' ) );
}
$path = $backup_source && $this->filesystem->exists( $backup_source ) ? $backup_source : $this->path;
/**
* Allow to overwrite the backup file if it already exists.
*
* @since 1.6.9
* @author Grégory Viguier
*
* @param bool $overwrite Whether to overwrite the backup file.
* @param string $path The file path.
* @param string $backup_path The backup path.
*/
$overwrite = apply_filters( 'imagify_backup_overwrite_backup', false, $path, $backup_path );
// Copy the file.
$this->filesystem->copy( $path, $backup_path, $overwrite, FS_CHMOD_FILE );
// Make sure the backup copy exists.
if ( ! $this->filesystem->exists( $backup_path ) ) {
return new \WP_Error( 'backup_doesnt_exist', __( 'The file could not be saved.', 'imagify' ), array(
'file_path' => $this->filesystem->make_path_relative( $path ),
'backup_path' => $this->filesystem->make_path_relative( $backup_path ),
) );
}
// Check if a '-scaled' version of the image exists.
$scaled_path = preg_replace( '/(\.)([^\.]+)$/', '-scaled.$2', $backup_source );
if ( $this->filesystem->exists( $scaled_path ) ) {
// Create a backup path for the scaled image.
$scaled_backup_path = preg_replace( '/(\.)([^\.]+)$/', '-scaled.$2', $backup_path );
// Copy the '-scaled' version to the backup.
$this->filesystem->copy( $scaled_path, $scaled_backup_path, $overwrite, FS_CHMOD_FILE );
if ( ! $this->filesystem->exists( $scaled_backup_path ) ) {
return new \WP_Error( 'backup_doesnt_exist', __( 'The file could not be saved.', 'imagify' ), array(
'file_path' => $this->filesystem->make_path_relative( $scaled_path ),
'backup_path' => $this->filesystem->make_path_relative( $scaled_backup_path ),
) );
}
}
return true;
}
/**
* Optimize a file with Imagify.
*
* @since 1.9
* @author Grégory Viguier
*
* @param array $args {
* Optional. An array of arguments.
*
* @type bool $backup False to prevent backup. True to follow the user's setting. A backup can't be forced.
* @type string $backup_path If a backup must be done, this is the path to use. Default is the backup path used for the WP Media Library.
* @type int $optimization_level The optimization level (2=ultra, 1=aggressive, 0=normal).
* @type string $convert Set to 'webp' to convert the image to WebP, 'avif' to convert image to AVIF.
* @type string $context The context.
* @type int $original_size The file size, sent to the API.
* }
* @return \sdtClass|\WP_Error Optimized image data. A \WP_Error object on error.
*/
public function optimize( $args = [] ) {
$args = array_merge( [
'backup' => true,
'backup_path' => null,
'backup_source' => null,
'optimization_level' => 0,
'convert' => '',
'context' => 'wp',
'original_size' => 0,
], $args );
$can_be_processed = $this->can_be_processed();
if ( is_wp_error( $can_be_processed ) ) {
return $can_be_processed;
}
// Check if external HTTP requests are blocked.
if ( Imagify_Requirements::is_imagify_blocked() ) {
return new \WP_Error( 'http_block_external', __( 'External HTTP requests are blocked.', 'imagify' ) );
}
/**
* Fires before a media file optimization.
*
* @since 1.9
* @author Grégory Viguier
*
* @param string $path Absolute path to the media file.
* @param array $args Arguments passed to the method.
*/
do_action( 'imagify_before_optimize_file', $this->path, $args );
/**
* Fires before to optimize the Image with Imagify.
*
* @since 1.0
* @deprecated
*
* @param string $path Absolute path to the image file.
* @param bool $backup True if a backup will be make.
*/
do_action_deprecated( 'before_do_imagify', [ $this->path, $args['backup'] ], '1.9', 'imagify_before_optimize_file' );
if ( $args['backup'] ) {
$backup_result = $this->backup( $args['backup_path'], $args['backup_source'] );
if ( is_wp_error( $backup_result ) ) {
// Stop the process if we can't backup the file.
return $backup_result;
}
}
// Send file for optimization and fetch the response.
$data = [
'normal' => 0 === $args['optimization_level'],
'aggressive' => 1 === $args['optimization_level'],
'ultra' => 2 === $args['optimization_level'],
'keep_exif' => true,
'original_size' => $args['original_size'],
'context' => $args['context'],
];
if ( $args['convert'] ) {
$data['convert'] = $args['convert'];
$format = $args['convert'];
}
$response = upload_imagify_image( [
'image' => $this->path,
'data' => wp_json_encode( $data ),
] );
if ( is_wp_error( $response ) ) {
return new \WP_Error( 'api_error', $response->get_error_message() );
}
if ( ! function_exists( 'download_url' ) ) {
require_once ABSPATH . 'wp-admin/includes/file.php';
}
$temp_file = download_url( $response->image );
if ( is_wp_error( $temp_file ) ) {
return new \WP_Error( 'temp_file_not_found', $temp_file->get_error_message() );
}
if ( property_exists( $response, 'message' ) ) {
$args['convert'] = '';
}
$formats = [
'webp',
'avif',
];
if ( in_array( $args['convert'], $formats, true ) ) {
$destination_path = $this->get_path_to_nextgen( $args['convert'] );
$this->path = $destination_path;
$this->file_type = null;
$this->editor = null;
} else {
$destination_path = $this->path;
}
$moved = $this->filesystem->move( $temp_file, $destination_path, true );
if ( ! $moved ) {
return new \WP_Error( 'move_error', __( 'The file could not be moved to its final destination.', 'imagify' ) );
}
/**
* Fires after to optimize the Image with Imagify.
*
* @since 1.0
* @deprecated
*
* @param string $path Absolute path to the image file.
* @param bool $backup True if a backup has been made.
*/
do_action_deprecated( 'after_do_imagify', [ $this->path, $args['backup'] ], '1.9', 'imagify_before_optimize_file' );
/**
* Fires after a media file optimization.
*
* @since 1.9
* @author Grégory Viguier
*
* @param string $path Absolute path to the media file.
* @param array $args Arguments passed to the method.
*/
do_action( 'imagify_after_optimize_file', $this->path, $args );
return $response;
}
/** ----------------------------------------------------------------------------------------- */
/** IMAGE EDITOR (GD/IMAGEMAGICK) =========================================================== */
/** ----------------------------------------------------------------------------------------- */
/**
* Get an image editor instance (WP_Image_Editor_Imagick, WP_Image_Editor_GD).
*
* @since 1.9
* @author Grégory Viguier
*
* @return WP_Image_Editor_Imagick|WP_Image_Editor_GD|WP_Error
*/
protected function get_editor() {
if ( isset( $this->editor ) ) {
return $this->editor;
}
$this->editor = wp_get_image_editor( $this->path, [
'methods' => $this->get_editor_methods(),
] );
if ( ! is_wp_error( $this->editor ) ) {
return $this->editor;
}
$this->editor = new \WP_Error(
'image_editor',
sprintf(
/* translators: %1$s is an error message, %2$s is a "More info?" link. */
__( 'No php extensions are available to edit images on the server. ImageMagick or GD is required. The internal error is: %1$s. %2$s', 'imagify' ),
$this->editor->get_error_message(),
'<a href="' . esc_url( imagify_get_external_url( 'documentation-imagick-gd' ) ) . '" target="_blank">' . __( 'More info?', 'imagify' ) . '</a>'
)
);
return $this->editor;
}
/**
* Get the image editor methods we will use.
*
* @since 1.9
* @author Grégory Viguier
*
* @return array
*/
protected function get_editor_methods() {
static $methods;
if ( isset( $methods ) ) {
return $methods;
}
$methods = [
'resize',
'multi_resize',
'generate_filename',
'save',
];
if ( $this->filesystem->can_get_exif() ) {
$methods[] = 'rotate';
}
return $methods;
}
/** ----------------------------------------------------------------------------------------- */
/** VARIOUS TOOLS =========================================================================== */
/** ----------------------------------------------------------------------------------------- */
/**
* Check if a file exceeds the weight limit (> 5mo).
*
* @since 1.9
* @author Grégory Viguier
*
* @return bool
*/
public function is_exceeded() {
if ( ! $this->is_valid() ) {
return false;
}
$size = $this->filesystem->size( $this->path );
return $size > IMAGIFY_MAX_BYTES;
}
/**
* Tell if the current file is supported for a given context.
*
* @since 1.9
* @see imagify_get_mime_types()
* @author Grégory Viguier
*
* @param array $allowed_mime_types A list of allowed mime types.
* @return bool
*/
public function is_supported( $allowed_mime_types ) {
return in_array( $this->get_mime_type(), $allowed_mime_types, true );
}
/**
* Tell if the file is an image.
*
* @since 1.9
* @author Grégory Viguier
*
* @return bool
*/
public function is_image() {
if ( isset( $this->is_image ) ) {
return $this->is_image;
}
$this->is_image = strpos( $this->get_mime_type(), 'image/' ) === 0;
return $this->is_image;
}
/**
* Tell if the file is a pdf.
*
* @since 1.9
* @author Grégory Viguier
*
* @return bool
*/
public function is_pdf() {
return 'application/pdf' === $this->get_mime_type();
}
/**
* Get the file mime type.
*
* @since 1.9
* @author Grégory Viguier
*
* @return string
*/
public function get_mime_type() {
return $this->get_file_type()->type;
}
/**
* Get the file extension.
*
* @since 1.9
*
* @return string|false
*/
public function get_extension() {
return $this->get_file_type()->ext;
}
/**
* Get the file path.
*
* @since 1.9
* @author Grégory Viguier
*
* @return string
*/
public function get_path() {
return $this->path;
}
/**
* Replace the file extension by WebP.
*
* @since 1.9
* @author Grégory Viguier
*
* @return string|bool The file path on success. False if not an image or on failure.
*/
public function get_path_to_webp() {
if ( ! $this->is_image() ) {
return false;
}
if ( $this->is_webp() ) {
return false;
}
return imagify_path_to_webp( $this->path );
}
/**
* Replace the file extension by its next-gen format extension.
*
* @since 2.2
*
* @param string $format the format we are targeting.
* @return string|bool The file path on success. False if not an image or on failure.
*/
public function get_path_to_nextgen( string $format ) {
if ( ! $this->is_image() ) {
return false;
}
if ( $this->is_webp() || $this->is_avif() ) {
return false;
}
return imagify_path_to_nextgen( $this->path, $format );
}
/**
* Tell if the file is a WebP image.
* Rejects "path/to/.webp" files.
*
* @since 1.9
* @author Grégory Viguier
*
* @return bool
*/
public function is_webp() {
return preg_match( '@(?!^|/|\\\)\.webp$@i', $this->path );
}
/**
* Tell if the file is an AVIF image.
* Rejects "path/to/.avif" files.
*
* @since 2.2
*
* @return bool
*/
public function is_avif() {
return preg_match( '@(?!^|/|\\\)\.avif$@i', $this->path );
}
/**
* Get the file mime type + file extension.
*
* @since 1.9
* @see wp_check_filetype()
* @author Grégory Viguier
*
* @return object {
* @type string $ext The file extension.
* @type string $type The mime type.
* }
*/
protected function get_file_type() {
if ( isset( $this->file_type ) ) {
return $this->file_type;
}
$this->file_type = (object) [
'ext' => '',
'type' => '',
];
if ( ! $this->is_valid() ) {
return $this->file_type;
}
$this->file_type = (object) wp_check_filetype( $this->path );
return $this->file_type;
}
/**
* If the media is an image, get its width and height.
*
* @since 1.9
* @author Grégory Viguier
*
* @return array
*/
public function get_dimensions() {
if ( ! $this->is_image() ) {
return [
'width' => 0,
'height' => 0,
];
}
$values = $this->filesystem->get_image_size( $this->path );
if ( empty( $values ) ) {
return [
'width' => 0,
'height' => 0,
];
}
return [
'width' => $values['width'],
'height' => $values['height'],
];
}
/**
* Get a plugin’s option.
*
* @since 1.9
* @author Grégory Viguier
*
* @param string $option_name The option nme.
* @return mixed
*/
protected function get_option( $option_name ) {
if ( isset( $this->options[ $option_name ] ) ) {
return $this->options[ $option_name ];
}
$this->options[ $option_name ] = get_imagify_option( $option_name );
return $this->options[ $option_name ];
}
}
