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Themes: Use improved support for child themes in wp_theme_has_theme_json().

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Improve logic in `wp_theme_has_theme_json()`, to only check to see if theme.json exists in child theme, if the current theme is a child theme. Without this change, `file_exists` would be called twice on every request, which is wasteful. 

Follow up to [56085]. 

Props spacedmonkey, SergeyBiryukov.
Fixes #57629.

git-svn-id: https://develop.svn.wordpress.org/trunk@56094 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Jonny Harris 2023-06-28 17:12:46 +00:00
parent 7faab129f5
commit eaab2c9092
1 changed files with 7 additions and 8 deletions
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15
src/wp-includes/global-styles-and-settings.php
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@ -407,21 +407,20 @@ function wp_theme_has_theme_json() {
return $theme_has_support;
}
$stylesheet_directory = get_stylesheet_directory();
$template_directory = get_template_directory();
// This is the same as get_theme_file_path(), which isn't available in load-styles.php context
if ( file_exists( get_stylesheet_directory() . '/theme.json' ) ) {
$path = get_stylesheet_directory() . '/theme.json';
if ( $stylesheet_directory !== $template_directory && file_exists( $stylesheet_directory . '/theme.json' ) ) {
$path = $stylesheet_directory . '/theme.json';
} else {
$path = get_template_directory() . '/theme.json';
$path = $template_directory . '/theme.json';
}
/** This filter is documented in wp-includes/link-template.php */
$path = apply_filters( 'theme_file_path', $path, 'theme.json' );
if ( file_exists( $path ) ) {
$theme_has_support = true;
} else {
$theme_has_support = false;
}
$theme_has_support = file_exists( $path );
return $theme_has_support;
}