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<?php
/**
* Callbacks for adding content to an AMP template.
*
* @package AMP
*/
/**
* Register hooks.
*
* @internal
*/
function amp_post_template_init_hooks() {
add_action( 'amp_post_template_head', 'noindex' );
add_action( 'amp_post_template_head', 'amp_post_template_add_title' );
add_action( 'amp_post_template_head', 'amp_post_template_add_canonical' );
add_action( 'amp_post_template_head', 'amp_post_template_add_fonts' );
add_action( 'amp_post_template_head', 'amp_print_schemaorg_metadata' );
add_action( 'amp_post_template_head', 'amp_add_generator_metadata' );
add_action( 'amp_post_template_head', 'wp_generator' );
add_action( 'amp_post_template_head', 'amp_post_template_add_block_styles' );
add_action( 'amp_post_template_head', 'amp_post_template_add_default_styles' );
add_action( 'amp_post_template_css', 'amp_post_template_add_styles', 99 );
add_action( 'amp_post_template_data', 'amp_post_template_add_analytics_script' );
add_action( 'amp_post_template_footer', 'amp_post_template_add_analytics_data' );
add_action( 'admin_bar_init', [ 'AMP_Theme_Support', 'init_admin_bar' ] );
add_action( 'amp_post_template_footer', 'wp_admin_bar_render' );
// Printing scripts here is done primarily for the benefit of the admin bar. Note that wp_enqueue_scripts() is not called.
add_action( 'amp_post_template_head', 'wp_print_head_scripts' );
add_action( 'amp_post_template_footer', 'wp_print_footer_scripts' );
}
/**
* Add title.
*
* @internal
*
* @param AMP_Post_Template $amp_template template.
*/
function amp_post_template_add_title( $amp_template ) {
?>
<title><?php echo esc_html( $amp_template->get( 'document_title' ) ); ?></title>
<?php
}
/**
* Add canonical link.
*
* @internal
*
* @param AMP_Post_Template $amp_template Template.
*/
function amp_post_template_add_canonical( $amp_template ) {
?>
<link rel="canonical" href="<?php echo esc_url( $amp_template->get( 'canonical_url' ) ); ?>" />
<?php
}
/**
* Print fonts.
*
* @internal
*
* @param AMP_Post_Template $amp_template Template.
*/
function amp_post_template_add_fonts( $amp_template ) {
$font_urls = $amp_template->get( 'font_urls', [] );
foreach ( $font_urls as $url ) {
printf( '<link rel="stylesheet" href="%s">', esc_url( esc_url( $url ) ) ); // phpcs:ignore WordPress.WP.EnqueuedResources.NonEnqueuedStylesheet
}
}
/**
* Add block styles for core blocks and third-party blocks.
*
* @internal
*
* @since 1.5.0
*/
function amp_post_template_add_block_styles() {
add_theme_support( 'wp-block-styles' );
if ( function_exists( 'wp_common_block_scripts_and_styles' ) ) {
wp_common_block_scripts_and_styles();
}
// Note that this will also print the admin-bar styles since WP_Admin_Bar::initialize() has been called.
wp_styles()->do_items();
}
/**
* Print default styles.
*
* @since 2.0.1
* @internal
*/
function amp_post_template_add_default_styles() {
wp_print_styles( 'amp-default' );
}
/**
* Print styles.
*
* @internal
*
* @param AMP_Post_Template $amp_template Template.
*/
function amp_post_template_add_styles( $amp_template ) {
$stylesheets = $amp_template->get( 'post_amp_stylesheets' );
if ( ! empty( $stylesheets ) ) {
echo '/* Inline stylesheets */' . PHP_EOL; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
echo implode( '', $stylesheets ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
}
$styles = $amp_template->get( 'post_amp_styles' );
if ( ! empty( $styles ) ) {
echo '/* Inline styles */' . PHP_EOL; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
foreach ( $styles as $selector => $declarations ) {
$declarations = implode( ';', $declarations ) . ';';
printf( '%1$s{%2$s}', $selector, $declarations ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
}
}
}
/**
* Add analytics scripts.
*
* @internal
* @deprecated This is no longer necessary.
*
* @param array $data Data.
* @return array Data.
*/
function amp_post_template_add_analytics_script( $data ) {
if ( ! empty( $data['amp_analytics'] ) ) {
$data['amp_component_scripts']['amp-analytics'] = 'https://cdn.ampproject.org/v0/amp-analytics-0.1.js';
}
return $data;
}
/**
* Print analytics data.
*
* @internal
*
* @since 0.3.2
*/
function amp_post_template_add_analytics_data() {
$analytics = amp_add_custom_analytics();
amp_print_analytics( $analytics );
}
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