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msd2/wordpress/wp-content/plugins/amp/wpcom-helper.php

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+<?php
+/**
+ * WPCOM-specific things.
+ *
+ * @todo Move this into Jetpack. See https://github.com/ampproject/amp-wp/issues/1021
+ * @package AMP
+ */
+
+// Disable admin menu.
+add_filter( 'amp_options_menu_is_enabled', '__return_false', 9999 );
+
+add_action( 'amp_extract_image_dimensions_batch_callbacks_registered', 'wpcom_amp_extract_image_dimensions_batch_add_custom_callbacks' );
+
+/**
+ * Add hooks to extract image dimensions.
+ *
+ * @since 0.5
+ */
+function wpcom_amp_extract_image_dimensions_batch_add_custom_callbacks() {
+	// If images are being served from Photon or WP.com files, try extracting the size using querystring.
+	add_action( 'amp_extract_image_dimensions_batch', 'wpcom_amp_extract_image_dimensions_from_querystring', 9, 1 ); // Hook in before the default extractors.
+
+	// Uses a special wpcom lib (wpcom_getimagesize) to extract dimensions as a last resort if we weren't able to figure them out.
+	add_action( 'amp_extract_image_dimensions_batch', 'wpcom_amp_extract_image_dimensions_from_getimagesize', 99, 1 ); // Our last resort, so run late.
+
+	// The wpcom override obviates this one, so take it out.
+	remove_filter( 'amp_extract_image_dimensions_batch', array( 'AMP_Image_Dimension_Extractor', 'extract_by_downloading_images' ), 999 );
+}
+
+/**
+ * Extract image dimensions from query string.
+ *
+ * @since 0.5
+ *
+ * @param array $dimensions Dimensions.
+ * @return array Dimensions.
+ */
+function wpcom_amp_extract_image_dimensions_from_querystring( $dimensions ) {
+	foreach ( $dimensions as $url => $value ) {
+
+		if ( is_array( $value ) ) {
+			continue;
+		}
+
+		$host = wp_parse_url( $url, PHP_URL_HOST );
+		if ( ! wp_endswith( $host, '.wp.com' ) && ! wp_endswith( $host, '.files.wordpress.com' ) ) {
+			continue;
+		}
+
+		parse_str( wp_parse_url( $url, PHP_URL_QUERY ), $query );
+		$w = isset( $query['w'] ) ? absint( $query['w'] ) : false;
+		$h = isset( $query['h'] ) ? absint( $query['h'] ) : false;
+
+		if ( false !== $w && false !== $h ) {
+			$dimensions[ $url ] = array(
+				'width'  => $w,
+				'height' => $h,
+			);
+		}
+	}
+	return $dimensions;
+}
+
+/**
+ * Extract image dimensions via wpcom/imagesize.
+ *
+ * @since 0.5
+ *
+ * @param array $dimensions Dimensions.
+ * @return array Dimensions.
+ */
+function wpcom_amp_extract_image_dimensions_from_getimagesize( $dimensions ) {
+	if ( ! function_exists( 'require_lib' ) ) {
+		return $dimensions;
+	}
+	require_lib( 'wpcom/imagesize' );
+
+	foreach ( $dimensions as $url => $value ) {
+		if ( is_array( $value ) ) {
+			continue;
+		}
+		$result = wpcom_getimagesize( $url );
+		if ( is_array( $result ) ) {
+			$dimensions[ $url ] = array(
+				'width'  => $result[0],
+				'height' => $result[1],
+			);
+		}
+	}
+
+	return $dimensions;
+}