Changeset 13974

Timestamp:

08/19/2024 08:03:45 PM (7 weeks ago)

Author:

coffee2code

Message:

Photo Directory, Photo: Add function to retrieve all EXIF data from a photo.

See #7734.

File:

• sites/trunk/wordpress.org/public_html/wp-content/plugins/photo-directory/inc/photo.php (modified) (1 diff)

sites/trunk/wordpress.org/public_html/wp-content/plugins/photo-directory/inc/photo.php

@@ -968 +968 @@
 
     /**
+     * Strips markups from text and UTF8 encodes it if it appears to be UTF8.
+     *
+     * @param string $text Text to strip of tags and UTF8 encode.
+     * @return string
+     */
+    public static function _strip_and_utf8_encode( $text ) {
+        $text = wp_kses( $text, 'strip' );
+
+        if ( $text && ! seems_utf8( $text ) ) {
+            $text = utf8_encode( $text );
+        }
+
+        return $text;
+    }
+
+    /**
+     * Returns all EXIF data for a photo, not just the hardcoded subset returned
+     * by `wp_read_image_metadata()`.
+     *
+     * Also returns the data completely raw, without any reformatting other than
+     * sanitization.
+     *
+     * @param int $post_id The ID of the photo post.
+     * @return false|array The sanitized raw EXIF data, or false if the file was
+     *                     not found or `exif_read_data()` is not available.
+     */
+    public static function get_all_exif( $post_id ) {
+        $image_id = get_post_thumbnail_id( $post_id );
+        $file = get_attached_file( $image_id );
+        $exif = [];
+
+        // Bail if `exif_read_data()` is not available or the file no longer exists.
+        if ( ! is_callable( 'exif_read_data' ) || ! file_exists( $file ) ) {
+            return false;
+        }
+
+        $exif = self::exif_read_data_as_data_stream( $file );
+
+        if ( ! $exif ) {
+            return [];
+        }
+
+        // Ignore EXIF keys that are definitely not worth including.
+        $ignored_exif = apply_filters(
+            'wporg_photos-ignored_exif_keys',
+            [ 'UndefinedTag:0x9AAA' ]
+        );
+        if ( $ignored_exif && is_array( $ignored_exif ) ) {
+            foreach ( $ignored_exif as $key ) {
+                unset( $exif[ $key ] );
+            }
+        }
+
+        return map_deep( $exif, [__CLASS__, '_strip_and_utf8_encode' ] );
+    }
+
+    /**
      * Returns the IP address for the photo contributor.
      *