Web Design Leaves

function get_parent_theme_file_uri( $file = '' ) {
    $file = ltrim( $file, '/' );

    if ( empty( $file ) ) {
        $url = get_template_directory_uri(); //ファイル名が空の場合
    } else {
        $url = get_template_directory_uri() . '/' . $file;
    }

    /**
     * Filters the URL to a file in the parent theme.
     *
     * @since 4.7.0
     *
     * @param string $url  The file URL.
     * @param string $file The requested file to search for.
     */
    return apply_filters( 'parent_theme_file_uri', $url, $file );
}

function get_parent_theme_file_path( $file = '' ) {
    $file = ltrim( $file, '/' );

    if ( empty( $file ) ) {
        $path = get_template_directory();  //ファイル名が空の場合
    } else {
        $path = get_template_directory() . '/' . $file;
    }

    /**
     * Filters the path to a file in the parent theme.
     *
     * @since 4.7.0
     *
     * @param string $path The file path.
     * @param string $file The requested file to search for.
     */
    return apply_filters( 'parent_theme_file_path', $path, $file );
}

function get_theme_root_uri( $stylesheet_or_template = false, $theme_root = false ) {
    global $wp_theme_directories;

  if ( $stylesheet_or_template && ! $theme_root ) {
    $theme_root = get_raw_theme_root( $stylesheet_or_template );
  }

  if ( $stylesheet_or_template && $theme_root ) {
    if ( in_array( $theme_root, (array) $wp_theme_directories ) ) {
      // Absolute path. Make an educated guess. YMMV -- but note the filter below.
      if ( 0 === strpos( $theme_root, WP_CONTENT_DIR ) ) {
        $theme_root_uri = content_url( str_replace( WP_CONTENT_DIR, '', $theme_root ) );
      } elseif ( 0 === strpos( $theme_root, ABSPATH ) ) {
        $theme_root_uri = site_url( str_replace( ABSPATH, '', $theme_root ) );
      } elseif ( 0 === strpos( $theme_root, WP_PLUGIN_DIR ) || 0 === strpos( $theme_root, WPMU_PLUGIN_DIR ) ) {
        $theme_root_uri = plugins_url( basename( $theme_root ), $theme_root );
      } else {
        $theme_root_uri = $theme_root;
      }
    } else {
      $theme_root_uri = content_url( $theme_root );
    }
  } else {
      $theme_root_uri = content_url( 'themes' );
  }

  /**
   * Filters the URI for themes directory.
   * @since 1.5.0
   * @param string $theme_root_uri         The URI for themes directory.
   * @param string $siteurl                WordPress web address which is set in General Options.
   * @param string $stylesheet_or_template Stylesheet or template name of the theme.
   */
  return apply_filters( 'theme_root_uri', $theme_root_uri, get_option( 'siteurl' ), $stylesheet_or_template );
}

function get_theme_root( $stylesheet_or_template = false ) {
  global $wp_theme_directories;

  if ( $stylesheet_or_template && $theme_root = get_raw_theme_root( $stylesheet_or_template ) ) {
    // Always prepend WP_CONTENT_DIR unless the root currently registered as a theme directory.
    // This gives relative theme roots the benefit of the doubt when things go haywire.
    if ( ! in_array( $theme_root, (array) $wp_theme_directories ) ) {
      $theme_root = WP_CONTENT_DIR . $theme_root;
    }
  } else {
    $theme_root = WP_CONTENT_DIR . '/themes';
  }

  /**
   * Filters the absolute path to the themes directory.
   * @since 1.5.0
   * @param string $theme_root Absolute path to themes directory.
   */
  return apply_filters( 'theme_root', $theme_root );
}

function home_url( $path = '', $scheme = null ) {
    return get_home_url( null, $path, $scheme );
}

function get_home_url( $blog_id = null, $path = '', $scheme = null ) {
  global $pagenow;  //ページファイル名（グローバル変数）

  $orig_scheme = $scheme;

  if ( empty( $blog_id ) || !is_multisite() ) {
    $url = get_option( 'home' );
  } else {
    switch_to_blog( $blog_id );
    $url = get_option( 'home' );
    restore_current_blog();
  }

  if ( ! in_array( $scheme, array( 'http', 'https', 'relative' ) ) ) {
    if ( is_ssl() && ! is_admin() && 'wp-login.php' !== $pagenow )
      $scheme = 'https';
    else
      $scheme = parse_url( $url, PHP_URL_SCHEME );
  }

  $url = set_url_scheme( $url, $scheme );

  if ( $path && is_string( $path ) )
    $url .= '/' . ltrim( $path, '/' );

  /**
  * Filters the home URL.
  * @since 3.0.0
  * @param string $url The complete home URL including scheme and path.
  * @param string $path Path relative to the home URL. Blank string if no path is specified.
  * @param string|null $orig_scheme Scheme to give the home URL context. Accepts 'http', 'https','relative', 'rest', or null.
  * @param int|null $blog_id Site ID, or null for the current site.
  */
  return apply_filters( 'home_url', $url, $path, $orig_scheme, $blog_id );
}

function site_url( $path = '', $scheme = null ) {
    return get_site_url( null, $path, $scheme );
}

function get_pagenum_link( $pagenum = 1, $escape = true ) {
  global $wp_rewrite;

  $pagenum = (int) $pagenum;

  $request = remove_query_arg( 'paged' );

  $home_root = parse_url( home_url() );
  $home_root = ( isset( $home_root['path'] ) ) ? $home_root['path'] : '';
  $home_root = preg_quote( $home_root, '|' );

  $request = preg_replace( '|^' . $home_root . '|i', '', $request );
  $request = preg_replace( '|^/+|', '', $request );

  if ( ! $wp_rewrite->using_permalinks() || is_admin() ) {
    $base = trailingslashit( get_bloginfo( 'url' ) );

    if ( $pagenum > 1 ) {
      $result = add_query_arg( 'paged', $pagenum, $base . $request );
    } else {
      $result = $base . $request;
    }
  } else {
    $qs_regex = '|\?.*?$|';
    preg_match( $qs_regex, $request, $qs_match );

    if ( ! empty( $qs_match[0] ) ) {
      $query_string = $qs_match[0];
      $request      = preg_replace( $qs_regex, '', $request );
    } else {
      $query_string = '';
    }

    $request = preg_replace( "|$wp_rewrite->pagination_base/\d+/?$|", '', $request );
    $request = preg_replace( '|^' . preg_quote( $wp_rewrite->index, '|' ) . '|i', '', $request );
    $request = ltrim( $request, '/' );

    $base = trailingslashit( get_bloginfo( 'url' ) );

    if ( $wp_rewrite->using_index_permalinks() && ( $pagenum > 1 || '' != $request ) ) {
      $base .= $wp_rewrite->index . '/';
    }

    if ( $pagenum > 1 ) {
      $request = ( ( ! empty( $request ) ) ? trailingslashit( $request ) : $request ) . user_trailingslashit( $wp_rewrite->pagination_base . '/' . $pagenum, 'paged' );
    }

    $result = $base . $request . $query_string;
  }

  /**
   * Filters the page number link for the current request.
   * @since 2.5.0
   * @since 5.2.0 Added the `$pagenum` argument.
   * @param string $result  The page number link.
   * @param int    $pagenum The page number.
   */
  $result = apply_filters( 'get_pagenum_link', $result, $pagenum );

  if ( $escape ) {
    return esc_url( $result );
  } else {
    return esc_url_raw( $result );
  }
}