X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/7688c6ba71852cd89123b62b2d57683535e4702a..a349837896628462bf8c9bdc27d1477a10fe03eb:/wp-admin/includes/image.php diff --git a/wp-admin/includes/image.php b/wp-admin/includes/image.php index ec4466e5..61f527a5 100644 --- a/wp-admin/includes/image.php +++ b/wp-admin/includes/image.php @@ -1,192 +1,452 @@ 4 / 3 ) - return array( 128, (int) ($height / $width * 128 )); - else - return array( (int) ($width / $height * 96 ), 96 ); -} + $editor = wp_get_image_editor( $src ); + if ( is_wp_error( $editor ) ) + return $editor; -function wp_create_thumbnail( $file, $max_side, $effect = '' ) { + $src = $editor->crop( $src_x, $src_y, $src_w, $src_h, $dst_w, $dst_h, $src_abs ); + if ( is_wp_error( $src ) ) + return $src; - // 1 = GIF, 2 = JPEG, 3 = PNG + if ( ! $dst_file ) + $dst_file = str_replace( basename( $src_file ), 'cropped-' . basename( $src_file ), $src_file ); - if ( file_exists( $file ) ) { - $type = getimagesize( $file ); + // The directory containing the original file may no longer exist when + // using a replication plugin. + wp_mkdir_p( dirname( $dst_file ) ); - // if the associated function doesn't exist - then it's not - // handle. duh. i hope. + $dst_file = dirname( $dst_file ) . '/' . wp_unique_filename( dirname( $dst_file ), basename( $dst_file ) ); - if (!function_exists( 'imagegif' ) && $type[2] == 1 ) { - $error = __( 'Filetype not supported. Thumbnail not created.' ); - } - elseif (!function_exists( 'imagejpeg' ) && $type[2] == 2 ) { - $error = __( 'Filetype not supported. Thumbnail not created.' ); + $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; + if ( preg_match('!^image/!', get_post_mime_type( $attachment )) && file_is_displayable_image($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 + global $_wp_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'] ) ) + $sizes[$s]['width'] = intval( $_wp_additional_image_sizes[$s]['width'] ); // For theme-added sizes + else + $sizes[$s]['width'] = get_option( "{$s}_size_w" ); // For default sizes set in options + if ( isset( $_wp_additional_image_sizes[$s]['height'] ) ) + $sizes[$s]['height'] = intval( $_wp_additional_image_sizes[$s]['height'] ); // For theme-added sizes + else + $sizes[$s]['height'] = get_option( "{$s}_size_h" ); // For default sizes set in options + if ( isset( $_wp_additional_image_sizes[$s]['crop'] ) ) + $sizes[$s]['crop'] = intval( $_wp_additional_image_sizes[$s]['crop'] ); // For theme-added sizes + else + $sizes[$s]['crop'] = get_option( "{$s}_crop" ); // For default sizes set in options } - elseif (!function_exists( 'imagepng' ) && $type[2] == 3 ) { - $error = __( 'Filetype not supported. Thumbnail not created.' ); - } else { - // create the initial copy from the original file - if ( $type[2] == 1 ) { - $image = imagecreatefromgif( $file ); - } - elseif ( $type[2] == 2 ) { - $image = imagecreatefromjpeg( $file ); - } - elseif ( $type[2] == 3 ) { - $image = imagecreatefrompng( $file ); - } + $sizes = apply_filters( 'intermediate_image_sizes_advanced', $sizes ); - if ( function_exists( 'imageantialias' )) - imageantialias( $image, TRUE ); + if ( $sizes ) { + $editor = wp_get_image_editor( $file ); - $image_attr = getimagesize( $file ); + if ( ! is_wp_error( $editor ) ) + $metadata['sizes'] = $editor->multi_resize( $sizes ); + } else { + $metadata['sizes'] = array(); + } - // figure out the longest side + // fetch additional metadata from exif/iptc + $image_meta = wp_read_image_metadata( $file ); + if ( $image_meta ) + $metadata['image_meta'] = $image_meta; + + } elseif ( preg_match( '#^video/#', get_post_mime_type( $attachment ) ) ) { + $metadata = wp_read_video_metadata( $file ); + $support = current_theme_supports( 'post-thumbnails', 'attachment:video' ) && post_type_supports( 'attachment:video', 'thumbnail' ); + } elseif ( preg_match( '#^audio/#', get_post_mime_type( $attachment ) ) ) { + $metadata = wp_read_audio_metadata( $file ); + $support = current_theme_supports( 'post-thumbnails', 'attachment:audio' ) && post_type_supports( 'attachment:audio', 'thumbnail' ); + } - if ( $image_attr[0] > $image_attr[1] ) { - $image_width = $image_attr[0]; - $image_height = $image_attr[1]; - $image_new_width = $max_side; + if ( $support && ! empty( $metadata['image']['data'] ) ) { + $ext = '.jpg'; + switch ( $metadata['image']['mime'] ) { + case 'image/gif': + $ext = '.gif'; + break; + case 'image/png': + $ext = '.png'; + break; + } + $basename = str_replace( '.', '-', basename( $file ) ) . '-image' . $ext; + $uploaded = wp_upload_bits( $basename, '', $metadata['image']['data'] ); + if ( false === $uploaded['error'] ) { + $attachment = array( + 'post_mime_type' => $metadata['image']['mime'], + 'post_type' => 'attachment', + 'post_content' => '', + ); + $sub_attachment_id = wp_insert_attachment( $attachment, $uploaded['file'] ); + $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 ); + } + } - $image_ratio = $image_width / $image_new_width; - $image_new_height = $image_height / $image_ratio; - //width is > height - } else { - $image_width = $image_attr[0]; - $image_height = $image_attr[1]; - $image_new_height = $max_side; + // remove the blob of binary data from the array + if ( isset( $metadata['image']['data'] ) ) + unset( $metadata['image']['data'] ); - $image_ratio = $image_height / $image_new_height; - $image_new_width = $image_width / $image_ratio; - //height > width - } + return apply_filters( 'wp_generate_attachment_metadata', $metadata, $attachment_id ); +} - $thumbnail = imagecreatetruecolor( $image_new_width, $image_new_height); - @ imagecopyresampled( $thumbnail, $image, 0, 0, 0, 0, $image_new_width, $image_new_height, $image_attr[0], $image_attr[1] ); +/** + * 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; +} - // If no filters change the filename, we'll do a default transformation. - if ( basename( $file ) == $thumb = apply_filters( 'thumbnail_filename', basename( $file ) ) ) - $thumb = preg_replace( '!(\.[^.]+)?$!', '.thumbnail' . '$1', basename( $file ), 1 ); +/** + * 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}" ); +} - $thumbpath = str_replace( basename( $file ), $thumb, $file ); +/** + * 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; - // move the thumbnail to its final destination - if ( $type[2] == 1 ) { - if (!imagegif( $thumbnail, $thumbpath ) ) { - $error = __( "Thumbnail path invalid" ); - } - } - elseif ( $type[2] == 2 ) { - if (!imagejpeg( $thumbnail, $thumbpath ) ) { - $error = __( "Thumbnail path invalid" ); + list( , , $sourceImageType ) = 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' => '', + ); + + // 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] ); + if ( empty( $meta['title'] ) ) { + // Assume the title is stored in 2:120 if it's short. + if ( strlen( $caption ) < 80 ) + $meta['title'] = $caption; + else + $meta['caption'] = $caption; + } elseif ( $caption != $meta['title'] ) { + $meta['caption'] = $caption; } } - elseif ( $type[2] == 3 ) { - if (!imagepng( $thumbnail, $thumbpath ) ) { - $error = __( "Thumbnail path invalid" ); - } - } - - } - } else { - $error = __( 'File not found' ); - } - if (!empty ( $error ) ) { - return $error; - } else { - return apply_filters( 'wp_create_thumbnail', $thumbpath ); - } -} + 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] ); -function wp_crop_image( $src_file, $src_x, $src_y, $src_w, $src_h, $dst_w, $dst_h, $src_abs = false, $dst_file = false ) { - if ( ctype_digit( $src_file ) ) // Handle int as attachment ID - $src_file = get_attached_file( $src_file ); + if ( ! empty( $iptc['2#055'][0] ) and ! empty( $iptc['2#060'][0] ) ) // created date and time + $meta['created_timestamp'] = strtotime( $iptc['2#055'][0] . ' ' . $iptc['2#060'][0] ); - $src = wp_load_image( $src_file ); - - if ( !is_resource( $src )) - return $src; + if ( ! empty( $iptc['2#116'][0] ) ) // copyright + $meta['copyright'] = trim( $iptc['2#116'][0] ); + } + } - $dst = imagecreatetruecolor( $dst_w, $dst_h ); + // fetch additional info from exif if available + if ( is_callable( 'exif_read_data' ) && in_array( $sourceImageType, apply_filters( 'wp_read_image_metadata_types', array( IMAGETYPE_JPEG, IMAGETYPE_TIFF_II, IMAGETYPE_TIFF_MM ) ) ) ) { + $exif = @exif_read_data( $file ); + + if ( !empty( $exif['Title'] ) ) + $meta['title'] = trim( $exif['Title'] ); + + if ( ! empty( $exif['ImageDescription'] ) ) { + if ( empty( $meta['title'] ) && strlen( $exif['ImageDescription'] ) < 80 ) { + // Assume the title is stored in ImageDescription + $meta['title'] = trim( $exif['ImageDescription'] ); + if ( ! empty( $exif['COMPUTED']['UserComment'] ) && trim( $exif['COMPUTED']['UserComment'] ) != $meta['title'] ) + $meta['caption'] = trim( $exif['COMPUTED']['UserComment'] ); + } elseif ( trim( $exif['ImageDescription'] ) != $meta['title'] ) { + $meta['caption'] = trim( $exif['ImageDescription'] ); + } + } elseif ( ! empty( $exif['Comments'] ) && trim( $exif['Comments'] ) != $meta['title'] ) { + $meta['caption'] = trim( $exif['Comments'] ); + } - if ( $src_abs ) { - $src_w -= $src_x; - $src_h -= $src_y; + if ( ! empty( $exif['Artist'] ) ) + $meta['credit'] = trim( $exif['Artist'] ); + elseif ( ! empty($exif['Author'] ) ) + $meta['credit'] = trim( $exif['Author'] ); + + if ( ! 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( $exif['Model'] ); + if ( ! empty($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 (function_exists('imageantialias')) - imageantialias( $dst, true ); + foreach ( array( 'title', 'caption', 'credit', 'copyright', 'camera', 'iso' ) as $key ) { + if ( $meta[ $key ] && ! seems_utf8( $meta[ $key ] ) ) + $meta[ $key ] = utf8_encode( $meta[ $key ] ); + } - imagecopyresampled( $dst, $src, 0, 0, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h ); + return apply_filters( 'wp_read_image_metadata', $meta, $file, $sourceImageType ); - if ( !$dst_file ) - $dst_file = str_replace( basename( $src_file ), 'cropped-'.basename( $src_file ), $src_file ); +} - $dst_file = preg_replace( '/\\.[^\\.]+$/', '.jpg', $dst_file ); +/** + * 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); +} - if ( imagejpeg( $dst, $dst_file ) ) - return $dst_file; +/** + * Validate that file is suitable for displaying within a web page. + * + * @since 2.5.0 + * @uses apply_filters() Calls 'file_is_displayable_image' on $result and $path. + * + * @param string $path File path to test. + * @return bool True if suitable, false if not suitable. + */ +function file_is_displayable_image($path) { + $info = @getimagesize($path); + if ( empty($info) ) + $result = false; + elseif ( !in_array($info[2], array(IMAGETYPE_GIF, IMAGETYPE_JPEG, IMAGETYPE_PNG)) ) // only gif, jpeg and png images can reliably be displayed + $result = false; else - return false; + $result = true; + + return apply_filters('file_is_displayable_image', $result, $path); } -function wp_generate_attachment_metadata( $attachment_id, $file ) { - $attachment = get_post( $attachment_id ); +/** + * 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; - $metadata = array(); - if ( preg_match('!^image/!', get_post_mime_type( $attachment )) ) { - $imagesize = getimagesize($file); - $metadata['width'] = $imagesize['0']; - $metadata['height'] = $imagesize['1']; - list($uwidth, $uheight) = get_udims($metadata['width'], $metadata['height']); - $metadata['hwstring_small'] = "height='$uheight' width='$uwidth'"; - $metadata['file'] = $file; - - $max = apply_filters( 'wp_thumbnail_creation_size_limit', 3 * 1024 * 1024, $attachment_id, $file ); - - if ( $max < 0 || $metadata['width'] * $metadata['height'] < $max ) { - $max_side = apply_filters( 'wp_thumbnail_max_side_length', 128, $attachment_id, $file ); - $thumb = wp_create_thumbnail( $file, $max_side ); - - if ( @file_exists($thumb) ) - $metadata['thumb'] = basename($thumb); + 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) ) { + $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 apply_filters( 'wp_generate_attachment_metadata', $metadata ); + return $image; } -function wp_load_image( $file ) { - if ( ctype_digit( $file ) ) - $file = get_attached_file( $file ); - - if ( !file_exists( $file ) ) - return sprintf(__("File '%s' doesn't exist?"), $file); - - if ( ! function_exists('imagecreatefromstring') ) - return __('The GD image library is not installed.'); - - $contents = file_get_contents( $file ); - - $image = imagecreatefromstring( $contents ); - - if ( !is_resource( $image ) ) - return sprintf(__("File '%s' is not an image."), $file); +/** + * 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 ) ) ) { + $filepath = apply_filters( 'load_image_to_edit_filesystempath', path_join( dirname( $filepath ), $data['file'] ), $attachment_id, $size ); + } + } elseif ( function_exists( 'fopen' ) && function_exists( 'ini_get' ) && true == ini_get( 'allow_url_fopen' ) ) { + $filepath = apply_filters( 'load_image_to_edit_attachmenturl', wp_get_attachment_url( $attachment_id ), $attachment_id, $size ); + } - return $image; + return apply_filters( 'load_image_to_edit_path', $filepath, $attachment_id, $size ); } -function wp_shrink_dimensions( $width, $height, $wmax = 128, $hmax = 96 ) { - if ( $height <= $hmax && $width <= $wmax ) - return array( $width, $height); - elseif ( $width / $height > $wmax / $hmax ) - return array( $wmax, (int) ($height / $width * $wmax )); - else - return array( (int) ($width / $height * $hmax ), $hmax ); -} +/** + * 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( basename( $dst_file ), 'copy-' . basename( $dst_file ), $dst_file ); + $dst_file = dirname( $dst_file ) . '/' . wp_unique_filename( dirname( $dst_file ), 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; +}