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+<?php
+/**
+ * File contains all the administration image manipulation functions.
+ *
+ * @package WordPress
+ * @subpackage Administration
+ */
+
+/**
+ * Crop an Image to a given size.
+ *
+ * @since 2.1.0
+ *
+ * @param string|int $src The source file or Attachment ID.
+ * @param int $src_x The start x position to crop from.
+ * @param int $src_y The start y position to crop from.
+ * @param int $src_w The width to crop.
+ * @param int $src_h The height to crop.
+ * @param int $dst_w The destination width.
+ * @param int $dst_h The destination height.
+ * @param int $src_abs Optional. If the source crop points are absolute.
+ * @param string $dst_file Optional. The destination file to write to.
+ * @return string|WP_Error New filepath on success, WP_Error on failure.
+ */
+function wp_crop_image( $src, $src_x, $src_y, $src_w, $src_h, $dst_w, $dst_h, $src_abs = false, $dst_file = false ) {
+ $src_file = $src;
+ if ( is_numeric( $src ) ) { // Handle int as attachment ID
+ $src_file = get_attached_file( $src );
+
+ if ( ! file_exists( $src_file ) ) {
+ // If the file doesn't exist, attempt a URL fopen on the src link.
+ // This can occur with certain file replication plugins.
+ $src = _load_image_to_edit_path( $src, 'full' );
+ } else {
+ $src = $src_file;
+ }
+ }
+
+ $editor = wp_get_image_editor( $src );
+ if ( is_wp_error( $editor ) ) {
+ return $editor;
+ }
+
+ $src = $editor->crop( $src_x, $src_y, $src_w, $src_h, $dst_w, $dst_h, $src_abs );
+ if ( is_wp_error( $src ) ) {
+ return $src;
+ }
+
+ if ( ! $dst_file ) {
+ $dst_file = str_replace( wp_basename( $src_file ), 'cropped-' . wp_basename( $src_file ), $src_file );
+ }
+
+ /*
+ * The directory containing the original file may no longer exist when
+ * using a replication plugin.
+ */
+ wp_mkdir_p( dirname( $dst_file ) );
+
+ $dst_file = dirname( $dst_file ) . '/' . wp_unique_filename( dirname( $dst_file ), wp_basename( $dst_file ) );
+
+ $result = $editor->save( $dst_file );
+ if ( is_wp_error( $result ) ) {
+ return $result;
+ }
+
+ return $dst_file;
+}
+
+/**
+ * Generate post thumbnail attachment meta data.
+ *
+ * @since 2.1.0
+ *
+ * @param int $attachment_id Attachment Id to process.
+ * @param string $file Filepath of the Attached image.
+ * @return mixed Metadata for attachment.
+ */
+function wp_generate_attachment_metadata( $attachment_id, $file ) {
+ $attachment = get_post( $attachment_id );
+
+ $metadata = array();
+ $support = false;
+ $mime_type = get_post_mime_type( $attachment );
+
+ if ( preg_match( '!^image/!', $mime_type ) && file_is_displayable_image( $file ) ) {
+ $imagesize = getimagesize( $file );
+ $metadata['width'] = $imagesize[0];
+ $metadata['height'] = $imagesize[1];
+
+ // Make the file path relative to the upload dir.
+ $metadata['file'] = _wp_relative_upload_path( $file );
+
+ // Make thumbnails and other intermediate sizes.
+ $_wp_additional_image_sizes = wp_get_additional_image_sizes();
+
+ $sizes = array();
+ foreach ( get_intermediate_image_sizes() as $s ) {
+ $sizes[ $s ] = array(
+ 'width' => '',
+ 'height' => '',
+ 'crop' => false,
+ );
+ if ( isset( $_wp_additional_image_sizes[ $s ]['width'] ) ) {
+ // For theme-added sizes
+ $sizes[ $s ]['width'] = intval( $_wp_additional_image_sizes[ $s ]['width'] );
+ } else {
+ // For default sizes set in options
+ $sizes[ $s ]['width'] = get_option( "{$s}_size_w" );
+ }
+
+ if ( isset( $_wp_additional_image_sizes[ $s ]['height'] ) ) {
+ // For theme-added sizes
+ $sizes[ $s ]['height'] = intval( $_wp_additional_image_sizes[ $s ]['height'] );
+ } else {
+ // For default sizes set in options
+ $sizes[ $s ]['height'] = get_option( "{$s}_size_h" );
+ }
+
+ if ( isset( $_wp_additional_image_sizes[ $s ]['crop'] ) ) {
+ // For theme-added sizes
+ $sizes[ $s ]['crop'] = $_wp_additional_image_sizes[ $s ]['crop'];
+ } else {
+ // For default sizes set in options
+ $sizes[ $s ]['crop'] = get_option( "{$s}_crop" );
+ }
+ }
+
+ /**
+ * Filters the image sizes automatically generated when uploading an image.
+ *
+ * @since 2.9.0
+ * @since 4.4.0 Added the `$metadata` argument.
+ * @since 5.1.0 Added the `$attachment_id` argument.
+ *
+ * @param array $sizes An associative array of image sizes.
+ * @param array $metadata An associative array of image metadata: width, height, file.
+ * @param int $attachment_id Current attachment ID.
+ */
+ $sizes = apply_filters( 'intermediate_image_sizes_advanced', $sizes, $metadata, $attachment_id );
+
+ if ( $sizes ) {
+ $editor = wp_get_image_editor( $file );
+
+ if ( ! is_wp_error( $editor ) ) {
+ $metadata['sizes'] = $editor->multi_resize( $sizes );
+ }
+ } else {
+ $metadata['sizes'] = array();
+ }
+
+ // Fetch additional metadata from EXIF/IPTC.
+ $image_meta = wp_read_image_metadata( $file );
+ if ( $image_meta ) {
+ $metadata['image_meta'] = $image_meta;
+ }
+ } elseif ( wp_attachment_is( 'video', $attachment ) ) {
+ $metadata = wp_read_video_metadata( $file );
+ $support = current_theme_supports( 'post-thumbnails', 'attachment:video' ) || post_type_supports( 'attachment:video', 'thumbnail' );
+ } elseif ( wp_attachment_is( 'audio', $attachment ) ) {
+ $metadata = wp_read_audio_metadata( $file );
+ $support = current_theme_supports( 'post-thumbnails', 'attachment:audio' ) || post_type_supports( 'attachment:audio', 'thumbnail' );
+ }
+
+ if ( $support && ! empty( $metadata['image']['data'] ) ) {
+ // Check for existing cover.
+ $hash = md5( $metadata['image']['data'] );
+ $posts = get_posts(
+ array(
+ 'fields' => 'ids',
+ 'post_type' => 'attachment',
+ 'post_mime_type' => $metadata['image']['mime'],
+ 'post_status' => 'inherit',
+ 'posts_per_page' => 1,
+ 'meta_key' => '_cover_hash',
+ 'meta_value' => $hash,
+ )
+ );
+ $exists = reset( $posts );
+
+ if ( ! empty( $exists ) ) {
+ update_post_meta( $attachment_id, '_thumbnail_id', $exists );
+ } else {
+ $ext = '.jpg';
+ switch ( $metadata['image']['mime'] ) {
+ case 'image/gif':
+ $ext = '.gif';
+ break;
+ case 'image/png':
+ $ext = '.png';
+ break;
+ }
+ $basename = str_replace( '.', '-', wp_basename( $file ) ) . '-image' . $ext;
+ $uploaded = wp_upload_bits( $basename, '', $metadata['image']['data'] );
+ if ( false === $uploaded['error'] ) {
+ $image_attachment = array(
+ 'post_mime_type' => $metadata['image']['mime'],
+ 'post_type' => 'attachment',
+ 'post_content' => '',
+ );
+ /**
+ * Filters the parameters for the attachment thumbnail creation.
+ *
+ * @since 3.9.0
+ *
+ * @param array $image_attachment An array of parameters to create the thumbnail.
+ * @param array $metadata Current attachment metadata.
+ * @param array $uploaded An array containing the thumbnail path and url.
+ */
+ $image_attachment = apply_filters( 'attachment_thumbnail_args', $image_attachment, $metadata, $uploaded );
+
+ $sub_attachment_id = wp_insert_attachment( $image_attachment, $uploaded['file'] );
+ add_post_meta( $sub_attachment_id, '_cover_hash', $hash );
+ $attach_data = wp_generate_attachment_metadata( $sub_attachment_id, $uploaded['file'] );
+ wp_update_attachment_metadata( $sub_attachment_id, $attach_data );
+ update_post_meta( $attachment_id, '_thumbnail_id', $sub_attachment_id );
+ }
+ }
+ } elseif ( 'application/pdf' === $mime_type ) {
+ // Try to create image thumbnails for PDFs.
+
+ $fallback_sizes = array(
+ 'thumbnail',
+ 'medium',
+ 'large',
+ );
+
+ /**
+ * Filters the image sizes generated for non-image mime types.
+ *
+ * @since 4.7.0
+ *
+ * @param array $fallback_sizes An array of image size names.
+ * @param array $metadata Current attachment metadata.
+ */
+ $fallback_sizes = apply_filters( 'fallback_intermediate_image_sizes', $fallback_sizes, $metadata );
+
+ $sizes = array();
+ $_wp_additional_image_sizes = wp_get_additional_image_sizes();
+
+ foreach ( $fallback_sizes as $s ) {
+ if ( isset( $_wp_additional_image_sizes[ $s ]['width'] ) ) {
+ $sizes[ $s ]['width'] = intval( $_wp_additional_image_sizes[ $s ]['width'] );
+ } else {
+ $sizes[ $s ]['width'] = get_option( "{$s}_size_w" );
+ }
+
+ if ( isset( $_wp_additional_image_sizes[ $s ]['height'] ) ) {
+ $sizes[ $s ]['height'] = intval( $_wp_additional_image_sizes[ $s ]['height'] );
+ } else {
+ $sizes[ $s ]['height'] = get_option( "{$s}_size_h" );
+ }
+
+ if ( isset( $_wp_additional_image_sizes[ $s ]['crop'] ) ) {
+ $sizes[ $s ]['crop'] = $_wp_additional_image_sizes[ $s ]['crop'];
+ } else {
+ // Force thumbnails to be soft crops.
+ if ( 'thumbnail' !== $s ) {
+ $sizes[ $s ]['crop'] = get_option( "{$s}_crop" );
+ }
+ }
+ }
+
+ // Only load PDFs in an image editor if we're processing sizes.
+ if ( ! empty( $sizes ) ) {
+ $editor = wp_get_image_editor( $file );
+
+ if ( ! is_wp_error( $editor ) ) { // No support for this type of file
+ /*
+ * PDFs may have the same file filename as JPEGs.
+ * Ensure the PDF preview image does not overwrite any JPEG images that already exist.
+ */
+ $dirname = dirname( $file ) . '/';
+ $ext = '.' . pathinfo( $file, PATHINFO_EXTENSION );
+ $preview_file = $dirname . wp_unique_filename( $dirname, wp_basename( $file, $ext ) . '-pdf.jpg' );
+
+ $uploaded = $editor->save( $preview_file, 'image/jpeg' );
+ unset( $editor );
+
+ // Resize based on the full size image, rather than the source.
+ if ( ! is_wp_error( $uploaded ) ) {
+ $editor = wp_get_image_editor( $uploaded['path'] );
+ unset( $uploaded['path'] );
+
+ if ( ! is_wp_error( $editor ) ) {
+ $metadata['sizes'] = $editor->multi_resize( $sizes );
+ $metadata['sizes']['full'] = $uploaded;
+ }
+ }
+ }
+ }
+ }
+
+ // Remove the blob of binary data from the array.
+ if ( $metadata ) {
+ unset( $metadata['image']['data'] );
+ }
+
+ /**
+ * Filters the generated attachment meta data.
+ *
+ * @since 2.1.0
+ *
+ * @param array $metadata An array of attachment meta data.
+ * @param int $attachment_id Current attachment ID.
+ */
+ return apply_filters( 'wp_generate_attachment_metadata', $metadata, $attachment_id );
+}
+
+/**
+ * Convert a fraction string to a decimal.
+ *
+ * @since 2.5.0
+ *
+ * @param string $str
+ * @return int|float
+ */
+function wp_exif_frac2dec( $str ) {
+ @list( $n, $d ) = explode( '/', $str );
+ if ( ! empty( $d ) ) {
+ return $n / $d;
+ }
+ return $str;
+}
+
+/**
+ * Convert the exif date format to a unix timestamp.
+ *
+ * @since 2.5.0
+ *
+ * @param string $str
+ * @return int
+ */
+function wp_exif_date2ts( $str ) {
+ @list( $date, $time ) = explode( ' ', trim( $str ) );
+ @list( $y, $m, $d ) = explode( ':', $date );
+
+ return strtotime( "{$y}-{$m}-{$d} {$time}" );
+}
+
+/**
+ * Get extended image metadata, exif or iptc as available.
+ *
+ * Retrieves the EXIF metadata aperture, credit, camera, caption, copyright, iso
+ * created_timestamp, focal_length, shutter_speed, and title.
+ *
+ * The IPTC metadata that is retrieved is APP13, credit, byline, created date
+ * and time, caption, copyright, and title. Also includes FNumber, Model,
+ * DateTimeDigitized, FocalLength, ISOSpeedRatings, and ExposureTime.
+ *
+ * @todo Try other exif libraries if available.
+ * @since 2.5.0
+ *
+ * @param string $file
+ * @return bool|array False on failure. Image metadata array on success.
+ */
+function wp_read_image_metadata( $file ) {
+ if ( ! file_exists( $file ) ) {
+ return false;
+ }
+
+ list( , , $image_type ) = @getimagesize( $file );
+
+ /*
+ * EXIF contains a bunch of data we'll probably never need formatted in ways
+ * that are difficult to use. We'll normalize it and just extract the fields
+ * that are likely to be useful. Fractions and numbers are converted to
+ * floats, dates to unix timestamps, and everything else to strings.
+ */
+ $meta = array(
+ 'aperture' => 0,
+ 'credit' => '',
+ 'camera' => '',
+ 'caption' => '',
+ 'created_timestamp' => 0,
+ 'copyright' => '',
+ 'focal_length' => 0,
+ 'iso' => 0,
+ 'shutter_speed' => 0,
+ 'title' => '',
+ 'orientation' => 0,
+ 'keywords' => array(),
+ );
+
+ $iptc = array();
+ /*
+ * Read IPTC first, since it might contain data not available in exif such
+ * as caption, description etc.
+ */
+ if ( is_callable( 'iptcparse' ) ) {
+ @getimagesize( $file, $info );
+
+ if ( ! empty( $info['APP13'] ) ) {
+ $iptc = @iptcparse( $info['APP13'] );
+
+ // Headline, "A brief synopsis of the caption."
+ if ( ! empty( $iptc['2#105'][0] ) ) {
+ $meta['title'] = trim( $iptc['2#105'][0] );
+ /*
+ * Title, "Many use the Title field to store the filename of the image,
+ * though the field may be used in many ways."
+ */
+ } elseif ( ! empty( $iptc['2#005'][0] ) ) {
+ $meta['title'] = trim( $iptc['2#005'][0] );
+ }
+
+ if ( ! empty( $iptc['2#120'][0] ) ) { // description / legacy caption
+ $caption = trim( $iptc['2#120'][0] );
+
+ mbstring_binary_safe_encoding();
+ $caption_length = strlen( $caption );
+ reset_mbstring_encoding();
+
+ if ( empty( $meta['title'] ) && $caption_length < 80 ) {
+ // Assume the title is stored in 2:120 if it's short.
+ $meta['title'] = $caption;
+ }
+
+ $meta['caption'] = $caption;
+ }
+
+ if ( ! empty( $iptc['2#110'][0] ) ) { // credit
+ $meta['credit'] = trim( $iptc['2#110'][0] );
+ } elseif ( ! empty( $iptc['2#080'][0] ) ) { // creator / legacy byline
+ $meta['credit'] = trim( $iptc['2#080'][0] );
+ }
+
+ if ( ! empty( $iptc['2#055'][0] ) && ! empty( $iptc['2#060'][0] ) ) { // created date and time
+ $meta['created_timestamp'] = strtotime( $iptc['2#055'][0] . ' ' . $iptc['2#060'][0] );
+ }
+
+ if ( ! empty( $iptc['2#116'][0] ) ) { // copyright
+ $meta['copyright'] = trim( $iptc['2#116'][0] );
+ }
+
+ if ( ! empty( $iptc['2#025'][0] ) ) { // keywords array
+ $meta['keywords'] = array_values( $iptc['2#025'] );
+ }
+ }
+ }
+
+ $exif = array();
+
+ /**
+ * Filters the image types to check for exif data.
+ *
+ * @since 2.5.0
+ *
+ * @param array $image_types Image types to check for exif data.
+ */
+ $exif_image_types = apply_filters( 'wp_read_image_metadata_types', array( IMAGETYPE_JPEG, IMAGETYPE_TIFF_II, IMAGETYPE_TIFF_MM ) );
+
+ if ( is_callable( 'exif_read_data' ) && in_array( $image_type, $exif_image_types ) ) {
+ $exif = @exif_read_data( $file );
+
+ if ( ! empty( $exif['ImageDescription'] ) ) {
+ mbstring_binary_safe_encoding();
+ $description_length = strlen( $exif['ImageDescription'] );
+ reset_mbstring_encoding();
+
+ if ( empty( $meta['title'] ) && $description_length < 80 ) {
+ // Assume the title is stored in ImageDescription
+ $meta['title'] = trim( $exif['ImageDescription'] );
+ }
+
+ if ( empty( $meta['caption'] ) && ! empty( $exif['COMPUTED']['UserComment'] ) ) {
+ $meta['caption'] = trim( $exif['COMPUTED']['UserComment'] );
+ }
+
+ if ( empty( $meta['caption'] ) ) {
+ $meta['caption'] = trim( $exif['ImageDescription'] );
+ }
+ } elseif ( empty( $meta['caption'] ) && ! empty( $exif['Comments'] ) ) {
+ $meta['caption'] = trim( $exif['Comments'] );
+ }
+
+ if ( empty( $meta['credit'] ) ) {
+ if ( ! empty( $exif['Artist'] ) ) {
+ $meta['credit'] = trim( $exif['Artist'] );
+ } elseif ( ! empty( $exif['Author'] ) ) {
+ $meta['credit'] = trim( $exif['Author'] );
+ }
+ }
+
+ if ( empty( $meta['copyright'] ) && ! empty( $exif['Copyright'] ) ) {
+ $meta['copyright'] = trim( $exif['Copyright'] );
+ }
+ if ( ! empty( $exif['FNumber'] ) ) {
+ $meta['aperture'] = round( wp_exif_frac2dec( $exif['FNumber'] ), 2 );
+ }
+ if ( ! empty( $exif['Model'] ) ) {
+ $meta['camera'] = trim( $exif['Model'] );
+ }
+ if ( empty( $meta['created_timestamp'] ) && ! empty( $exif['DateTimeDigitized'] ) ) {
+ $meta['created_timestamp'] = wp_exif_date2ts( $exif['DateTimeDigitized'] );
+ }
+ if ( ! empty( $exif['FocalLength'] ) ) {
+ $meta['focal_length'] = (string) wp_exif_frac2dec( $exif['FocalLength'] );
+ }
+ if ( ! empty( $exif['ISOSpeedRatings'] ) ) {
+ $meta['iso'] = is_array( $exif['ISOSpeedRatings'] ) ? reset( $exif['ISOSpeedRatings'] ) : $exif['ISOSpeedRatings'];
+ $meta['iso'] = trim( $meta['iso'] );
+ }
+ if ( ! empty( $exif['ExposureTime'] ) ) {
+ $meta['shutter_speed'] = (string) wp_exif_frac2dec( $exif['ExposureTime'] );
+ }
+ if ( ! empty( $exif['Orientation'] ) ) {
+ $meta['orientation'] = $exif['Orientation'];
+ }
+ }
+
+ foreach ( array( 'title', 'caption', 'credit', 'copyright', 'camera', 'iso' ) as $key ) {
+ if ( $meta[ $key ] && ! seems_utf8( $meta[ $key ] ) ) {
+ $meta[ $key ] = utf8_encode( $meta[ $key ] );
+ }
+ }
+
+ foreach ( $meta['keywords'] as $key => $keyword ) {
+ if ( ! seems_utf8( $keyword ) ) {
+ $meta['keywords'][ $key ] = utf8_encode( $keyword );
+ }
+ }
+
+ $meta = wp_kses_post_deep( $meta );
+
+ /**
+ * Filters the array of meta data read from an image's exif data.
+ *
+ * @since 2.5.0
+ * @since 4.4.0 The `$iptc` parameter was added.
+ * @since 5.0.0 The `$exif` parameter was added.
+ *
+ * @param array $meta Image meta data.
+ * @param string $file Path to image file.
+ * @param int $image_type Type of image, one of the `IMAGETYPE_XXX` constants.
+ * @param array $iptc IPTC data.
+ * @param array $exif EXIF data.
+ */
+ return apply_filters( 'wp_read_image_metadata', $meta, $file, $image_type, $iptc, $exif );
+
+}
+
+/**
+ * Validate that file is an image.
+ *
+ * @since 2.5.0
+ *
+ * @param string $path File path to test if valid image.
+ * @return bool True if valid image, false if not valid image.
+ */
+function file_is_valid_image( $path ) {
+ $size = @getimagesize( $path );
+ return ! empty( $size );
+}
+
+/**
+ * Validate that file is suitable for displaying within a web page.
+ *
+ * @since 2.5.0
+ *
+ * @param string $path File path to test.
+ * @return bool True if suitable, false if not suitable.
+ */
+function file_is_displayable_image( $path ) {
+ $displayable_image_types = array( IMAGETYPE_GIF, IMAGETYPE_JPEG, IMAGETYPE_PNG, IMAGETYPE_BMP );
+
+ // IMAGETYPE_ICO is only defined in PHP 5.3+.
+ if ( defined( 'IMAGETYPE_ICO' ) ) {
+ $displayable_image_types[] = IMAGETYPE_ICO;
+ }
+
+ $info = @getimagesize( $path );
+ if ( empty( $info ) ) {
+ $result = false;
+ } elseif ( ! in_array( $info[2], $displayable_image_types ) ) {
+ $result = false;
+ } else {
+ $result = true;
+ }
+
+ /**
+ * Filters whether the current image is displayable in the browser.
+ *
+ * @since 2.5.0
+ *
+ * @param bool $result Whether the image can be displayed. Default true.
+ * @param string $path Path to the image.
+ */
+ return apply_filters( 'file_is_displayable_image', $result, $path );
+}
+
+/**
+ * Load an image resource for editing.
+ *
+ * @since 2.9.0
+ *
+ * @param string $attachment_id Attachment ID.
+ * @param string $mime_type Image mime type.
+ * @param string $size Optional. Image size, defaults to 'full'.
+ * @return resource|false The resulting image resource on success, false on failure.
+ */
+function load_image_to_edit( $attachment_id, $mime_type, $size = 'full' ) {
+ $filepath = _load_image_to_edit_path( $attachment_id, $size );
+ if ( empty( $filepath ) ) {
+ return false;
+ }
+
+ switch ( $mime_type ) {
+ case 'image/jpeg':
+ $image = imagecreatefromjpeg( $filepath );
+ break;
+ case 'image/png':
+ $image = imagecreatefrompng( $filepath );
+ break;
+ case 'image/gif':
+ $image = imagecreatefromgif( $filepath );
+ break;
+ default:
+ $image = false;
+ break;
+ }
+ if ( is_resource( $image ) ) {
+ /**
+ * Filters the current image being loaded for editing.
+ *
+ * @since 2.9.0
+ *
+ * @param resource $image Current image.
+ * @param string $attachment_id Attachment ID.
+ * @param string $size Image size.
+ */
+ $image = apply_filters( 'load_image_to_edit', $image, $attachment_id, $size );
+ if ( function_exists( 'imagealphablending' ) && function_exists( 'imagesavealpha' ) ) {
+ imagealphablending( $image, false );
+ imagesavealpha( $image, true );
+ }
+ }
+ return $image;
+}
+
+/**
+ * Retrieve the path or url of an attachment's attached file.
+ *
+ * If the attached file is not present on the local filesystem (usually due to replication plugins),
+ * then the url of the file is returned if url fopen is supported.
+ *
+ * @since 3.4.0
+ * @access private
+ *
+ * @param string $attachment_id Attachment ID.
+ * @param string $size Optional. Image size, defaults to 'full'.
+ * @return string|false File path or url on success, false on failure.
+ */
+function _load_image_to_edit_path( $attachment_id, $size = 'full' ) {
+ $filepath = get_attached_file( $attachment_id );
+
+ if ( $filepath && file_exists( $filepath ) ) {
+ if ( 'full' != $size && ( $data = image_get_intermediate_size( $attachment_id, $size ) ) ) {
+ /**
+ * Filters the path to the current image.
+ *
+ * The filter is evaluated for all image sizes except 'full'.
+ *
+ * @since 3.1.0
+ *
+ * @param string $path Path to the current image.
+ * @param string $attachment_id Attachment ID.
+ * @param string $size Size of the image.
+ */
+ $filepath = apply_filters( 'load_image_to_edit_filesystempath', path_join( dirname( $filepath ), $data['file'] ), $attachment_id, $size );
+ }
+ } elseif ( function_exists( 'fopen' ) && true == ini_get( 'allow_url_fopen' ) ) {
+ /**
+ * Filters the image URL if not in the local filesystem.
+ *
+ * The filter is only evaluated if fopen is enabled on the server.
+ *
+ * @since 3.1.0
+ *
+ * @param string $image_url Current image URL.
+ * @param string $attachment_id Attachment ID.
+ * @param string $size Size of the image.
+ */
+ $filepath = apply_filters( 'load_image_to_edit_attachmenturl', wp_get_attachment_url( $attachment_id ), $attachment_id, $size );
+ }
+
+ /**
+ * Filters the returned path or URL of the current image.
+ *
+ * @since 2.9.0
+ *
+ * @param string|bool $filepath File path or URL to current image, or false.
+ * @param string $attachment_id Attachment ID.
+ * @param string $size Size of the image.
+ */
+ return apply_filters( 'load_image_to_edit_path', $filepath, $attachment_id, $size );
+}
+
+/**
+ * Copy an existing image file.
+ *
+ * @since 3.4.0
+ * @access private
+ *
+ * @param string $attachment_id Attachment ID.
+ * @return string|false New file path on success, false on failure.
+ */
+function _copy_image_file( $attachment_id ) {
+ $dst_file = $src_file = get_attached_file( $attachment_id );
+ if ( ! file_exists( $src_file ) ) {
+ $src_file = _load_image_to_edit_path( $attachment_id );
+ }
+
+ if ( $src_file ) {
+ $dst_file = str_replace( wp_basename( $dst_file ), 'copy-' . wp_basename( $dst_file ), $dst_file );
+ $dst_file = dirname( $dst_file ) . '/' . wp_unique_filename( dirname( $dst_file ), wp_basename( $dst_file ) );
+
+ /*
+ * The directory containing the original file may no longer
+ * exist when using a replication plugin.
+ */
+ wp_mkdir_p( dirname( $dst_file ) );
+
+ if ( ! @copy( $src_file, $dst_file ) ) {
+ $dst_file = false;
+ }
+ } else {
+ $dst_file = false;
+ }
+
+ return $dst_file;
+}