geyson /wp-includes/general-template.php

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<?php
/**
 * General template tags that can go anywhere in a template.
 *
 * @package WordPress
 * @subpackage Template
 */

/**
 * Load header template.
 *
 * Includes the header template for a theme or if a name is specified then a
 * specialised header will be included.
 *
 * For the parameter, if the file is called "header-special.php" then specify
 * "special".
 *
 * @since 1.5.0
 *
 * @param string $name The name of the specialised header.
 */
function get_header( $name = null ) {
	/**
	 * Fires before the header template file is loaded.
	 *
	 * The hook allows a specific header template file to be used in place of the
	 * default header template file. If your file is called header-new.php,
	 * you would specify the filename in the hook as get_header( 'new' ).
	 *
	 * @since 2.1.0
	 * @since 2.8.0 $name parameter added.
	 *
	 * @param string $name Name of the specific header file to use.
	 */
	do_action( 'get_header', $name );

	$templates = array();
	$name = (string) $name;
	if ( '' !== $name )
		$templates[] = "header-{$name}.php";

	$templates[] = 'header.php';

	// Backward compat code will be removed in a future release
	if ('' == locate_template($templates, true))
		load_template( ABSPATH . WPINC . '/theme-compat/header.php');
}

/**
 * Load footer template.
 *
 * Includes the footer template for a theme or if a name is specified then a
 * specialised footer will be included.
 *
 * For the parameter, if the file is called "footer-special.php" then specify
 * "special".
 *
 * @since 1.5.0
 *
 * @param string $name The name of the specialised footer.
 */
function get_footer( $name = null ) {
	/**
	 * Fires before the footer template file is loaded.
	 *
	 * The hook allows a specific footer template file to be used in place of the
	 * default footer template file. If your file is called footer-new.php,
	 * you would specify the filename in the hook as get_footer( 'new' ).
	 *
	 * @since 2.1.0
	 * @since 2.8.0 $name parameter added.
	 *
	 * @param string $name Name of the specific footer file to use.
	 */
	do_action( 'get_footer', $name );

	$templates = array();
	$name = (string) $name;
	if ( '' !== $name )
		$templates[] = "footer-{$name}.php";

	$templates[] = 'footer.php';

	// Backward compat code will be removed in a future release
	if ('' == locate_template($templates, true))
		load_template( ABSPATH . WPINC . '/theme-compat/footer.php');
}

/**
 * Load sidebar template.
 *
 * Includes the sidebar template for a theme or if a name is specified then a
 * specialised sidebar will be included.
 *
 * For the parameter, if the file is called "sidebar-special.php" then specify
 * "special".
 *
 * @since 1.5.0
 *
 * @param string $name The name of the specialised sidebar.
 */
function get_sidebar( $name = null ) {
	/**
	 * Fires before the sidebar template file is loaded.
	 *
	 * The hook allows a specific sidebar template file to be used in place of the
	 * default sidebar template file. If your file is called sidebar-new.php,
	 * you would specify the filename in the hook as get_sidebar( 'new' ).
	 *
	 * @since 2.2.0
	 * @since 2.8.0 $name parameter added.
	 *
	 * @param string $name Name of the specific sidebar file to use.
	 */
	do_action( 'get_sidebar', $name );

	$templates = array();
	$name = (string) $name;
	if ( '' !== $name )
		$templates[] = "sidebar-{$name}.php";

	$templates[] = 'sidebar.php';

	// Backward compat code will be removed in a future release
	if ('' == locate_template($templates, true))
		load_template( ABSPATH . WPINC . '/theme-compat/sidebar.php');
}

/**
 * Load a template part into a template
 *
 * Makes it easy for a theme to reuse sections of code in a easy to overload way
 * for child themes.
 *
 * Includes the named template part for a theme or if a name is specified then a
 * specialised part will be included. If the theme contains no {slug}.php file
 * then no template will be included.
 *
 * The template is included using require, not require_once, so you may include the
 * same template part multiple times.
 *
 * For the $name parameter, if the file is called "{slug}-special.php" then specify
 * "special".
 *
 * @since 3.0.0
 *
 * @param string $slug The slug name for the generic template.
 * @param string $name The name of the specialised template.
 */
function get_template_part( $slug, $name = null ) {
	/**
	 * Fires before the specified template part file is loaded.
	 *
	 * The dynamic portion of the hook name, `$slug`, refers to the slug name
	 * for the generic template part.
	 *
	 * @since 3.0.0
	 *
	 * @param string $slug The slug name for the generic template.
	 * @param string $name The name of the specialized template.
	 */
	do_action( "get_template_part_{$slug}", $slug, $name );

	$templates = array();
	$name = (string) $name;
	if ( '' !== $name )
		$templates[] = "{$slug}-{$name}.php";

	$templates[] = "{$slug}.php";

	locate_template($templates, true, false);
}

/**
 * Display search form.
 *
 * Will first attempt to locate the searchform.php file in either the child or
 * the parent, then load it. If it doesn't exist, then the default search form
 * will be displayed. The default search form is HTML, which will be displayed.
 * There is a filter applied to the search form HTML in order to edit or replace
 * it. The filter is 'get_search_form'.
 *
 * This function is primarily used by themes which want to hardcode the search
 * form into the sidebar and also by the search widget in WordPress.
 *
 * There is also an action that is called whenever the function is run called,
 * 'pre_get_search_form'. This can be useful for outputting JavaScript that the
 * search relies on or various formatting that applies to the beginning of the
 * search. To give a few examples of what it can be used for.
 *
 * @since 2.7.0
 *
 * @param bool $echo Default to echo and not return the form.
 * @return string|void String when $echo is false.
 */
function get_search_form( $echo = true ) {
	/**
	 * Fires before the search form is retrieved, at the start of get_search_form().
	 *
	 * @since 2.7.0 as 'get_search_form' action.
	 * @since 3.6.0
	 *
	 * @link https://core.trac.wordpress.org/ticket/19321
	 */
	do_action( 'pre_get_search_form' );

	$format = current_theme_supports( 'html5', 'search-form' ) ? 'html5' : 'xhtml';

	/**
	 * Filter the HTML format of the search form.
	 *
	 * @since 3.6.0
	 *
	 * @param string $format The type of markup to use in the search form.
	 *                       Accepts 'html5', 'xhtml'.
	 */
	$format = apply_filters( 'search_form_format', $format );

	$search_form_template = locate_template( 'searchform.php' );
	if ( '' != $search_form_template ) {
		ob_start();
		require( $search_form_template );
		$form = ob_get_clean();
	} else {
		if ( 'html5' == $format ) {
			$form = '<form role="search" method="get" class="search-form" action="' . esc_url( home_url( '/' ) ) . '">
				<label>
					<span class="screen-reader-text">' . _x( 'Search for:', 'label' ) . '</span>
					<input type="search" class="search-field" placeholder="' . esc_attr_x( 'Search &hellip;', 'placeholder' ) . '" value="' . get_search_query() . '" name="s" title="' . esc_attr_x( 'Search for:', 'label' ) . '" />
				</label>
				<input type="submit" class="search-submit" value="'. esc_attr_x( 'Search', 'submit button' ) .'" />
			</form>';
		} else {
			$form = '<form role="search" method="get" id="searchform" class="searchform" action="' . esc_url( home_url( '/' ) ) . '">
				<div>
					<label class="screen-reader-text" for="s">' . _x( 'Search for:', 'label' ) . '</label>
					<input type="text" value="' . get_search_query() . '" name="s" id="s" />
					<input type="submit" id="searchsubmit" value="'. esc_attr_x( 'Search', 'submit button' ) .'" />
				</div>
			</form>';
		}
	}

	/**
	 * Filter the HTML output of the search form.
	 *
	 * @since 2.7.0
	 *
	 * @param string $form The search form HTML output.
	 */
	$result = apply_filters( 'get_search_form', $form );

	if ( null === $result )
		$result = $form;

	if ( $echo )
		echo $result;
	else
		return $result;
}

/**
 * Display the Log In/Out link.
 *
 * Displays a link, which allows users to navigate to the Log In page to log in
 * or log out depending on whether they are currently logged in.
 *
 * @since 1.5.0
 *
 * @param string $redirect Optional path to redirect to on login/logout.
 * @param bool   $echo     Default to echo and not return the link.
 * @return string|void String when retrieving.
 */
function wp_loginout($redirect = '', $echo = true) {
	if ( ! is_user_logged_in() )
		$link = '<a href="' . esc_url( wp_login_url($redirect) ) . '">' . __('Log in') . '</a>';
	else
		$link = '<a href="' . esc_url( wp_logout_url($redirect) ) . '">' . __('Log out') . '</a>';

	if ( $echo ) {
		/**
		 * Filter the HTML output for the Log In/Log Out link.
		 *
		 * @since 1.5.0
		 *
		 * @param string $link The HTML link content.
		 */
		echo apply_filters( 'loginout', $link );
	} else {
		/** This filter is documented in wp-includes/general-template.php */
		return apply_filters( 'loginout', $link );
	}
}

/**
 * Returns the Log Out URL.
 *
 * Returns the URL that allows the user to log out of the site.
 *
 * @since 2.7.0
 *
 * @param string $redirect Path to redirect to on logout.
 * @return string A log out URL.
 */
function wp_logout_url($redirect = '') {
	$args = array( 'action' => 'logout' );
	if ( !empty($redirect) ) {
		$args['redirect_to'] = urlencode( $redirect );
	}

	$logout_url = add_query_arg($args, site_url('wp-login.php', 'login'));
	$logout_url = wp_nonce_url( $logout_url, 'log-out' );

	/**
	 * Filter the logout URL.
	 *
	 * @since 2.8.0
	 *
	 * @param string $logout_url The Log Out URL.
	 * @param string $redirect   Path to redirect to on logout.
	 */
	return apply_filters( 'logout_url', $logout_url, $redirect );
}

/**
 * Returns the URL that allows the user to log in to the site.
 *
 * @since 2.7.0
 *
 * @param string $redirect     Path to redirect to on login.
 * @param bool   $force_reauth Whether to force reauthorization, even if a cookie is present. Default is false.
 * @return string A log in URL.
 */
function wp_login_url($redirect = '', $force_reauth = false) {
	$login_url = site_url('wp-login.php', 'login');

	if ( !empty($redirect) )
		$login_url = add_query_arg('redirect_to', urlencode($redirect), $login_url);

	if ( $force_reauth )
		$login_url = add_query_arg('reauth', '1', $login_url);

	/**
	 * Filter the login URL.
	 *
	 * @since 2.8.0
	 * @since 4.2.0 The `$force_reauth` parameter was added.
	 *
	 * @param string $login_url    The login URL.
	 * @param string $redirect     The path to redirect to on login, if supplied.
	 * @param bool   $force_reauth Whether to force reauthorization, even if a cookie is present.
	 */
	return apply_filters( 'login_url', $login_url, $redirect, $force_reauth );
}

/**
 * Returns the URL that allows the user to register on the site.
 *
 * @since 3.6.0
 *
 * @return string User registration URL.
 */
function wp_registration_url() {
	/**
	 * Filter the user registration URL.
	 *
	 * @since 3.6.0
	 *
	 * @param string $register The user registration URL.
	 */
	return apply_filters( 'register_url', site_url( 'wp-login.php?action=register', 'login' ) );
}

/**
 * Provides a simple login form for use anywhere within WordPress. By default, it echoes
 * the HTML immediately. Pass array('echo'=>false) to return the string instead.
 *
 * @since 3.0.0
 *
 * @param array $args Configuration options to modify the form output.
 * @return string|void String when retrieving.
 */
function wp_login_form( $args = array() ) {
	$defaults = array(
		'echo' => true,
		'redirect' => ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'], // Default redirect is back to the current page
		'form_id' => 'loginform',
		'label_username' => __( 'Username' ),
		'label_password' => __( 'Password' ),
		'label_remember' => __( 'Remember Me' ),
		'label_log_in' => __( 'Log In' ),
		'id_username' => 'user_login',
		'id_password' => 'user_pass',
		'id_remember' => 'rememberme',
		'id_submit' => 'wp-submit',
		'remember' => true,
		'value_username' => '',
		'value_remember' => false, // Set this to true to default the "Remember me" checkbox to checked
	);

	/**
	 * Filter the default login form output arguments.
	 *
	 * @since 3.0.0
	 *
	 * @see wp_login_form()
	 *
	 * @param array $defaults An array of default login form arguments.
	 */
	$args = wp_parse_args( $args, apply_filters( 'login_form_defaults', $defaults ) );

	/**
	 * Filter content to display at the top of the login form.
	 *
	 * The filter evaluates just following the opening form tag element.
	 *
	 * @since 3.0.0
	 *
	 * @param string $content Content to display. Default empty.
	 * @param array  $args    Array of login form arguments.
	 */
	$login_form_top = apply_filters( 'login_form_top', '', $args );

	/**
	 * Filter content to display in the middle of the login form.
	 *
	 * The filter evaluates just following the location where the 'login-password'
	 * field is displayed.
	 *
	 * @since 3.0.0
	 *
	 * @param string $content Content to display. Default empty.
	 * @param array  $args    Array of login form arguments.
	 */
	$login_form_middle = apply_filters( 'login_form_middle', '', $args );

	/**
	 * Filter content to display at the bottom of the login form.
	 *
	 * The filter evaluates just preceding the closing form tag element.
	 *
	 * @since 3.0.0
	 *
	 * @param string $content Content to display. Default empty.
	 * @param array  $args    Array of login form arguments.
	 */
	$login_form_bottom = apply_filters( 'login_form_bottom', '', $args );

	$form = '
		<form name="' . $args['form_id'] . '" id="' . $args['form_id'] . '" action="' . esc_url( site_url( 'wp-login.php', 'login_post' ) ) . '" method="post">
			' . $login_form_top . '
			<p class="login-username">
				<label for="' . esc_attr( $args['id_username'] ) . '">' . esc_html( $args['label_username'] ) . '</label>
				<input type="text" name="log" id="' . esc_attr( $args['id_username'] ) . '" class="input" value="' . esc_attr( $args['value_username'] ) . '" size="20" />
			</p>
			<p class="login-password">
				<label for="' . esc_attr( $args['id_password'] ) . '">' . esc_html( $args['label_password'] ) . '</label>
				<input type="password" name="pwd" id="' . esc_attr( $args['id_password'] ) . '" class="input" value="" size="20" />
			</p>
			' . $login_form_middle . '
			' . ( $args['remember'] ? '<p class="login-remember"><label><input name="rememberme" type="checkbox" id="' . esc_attr( $args['id_remember'] ) . '" value="forever"' . ( $args['value_remember'] ? ' checked="checked"' : '' ) . ' /> ' . esc_html( $args['label_remember'] ) . '</label></p>' : '' ) . '
			<p class="login-submit">
				<input type="submit" name="wp-submit" id="' . esc_attr( $args['id_submit'] ) . '" class="button-primary" value="' . esc_attr( $args['label_log_in'] ) . '" />
				<input type="hidden" name="redirect_to" value="' . esc_url( $args['redirect'] ) . '" />
			</p>
			' . $login_form_bottom . '
		</form>';

	if ( $args['echo'] )
		echo $form;
	else
		return $form;
}

/**
 * Returns the URL that allows the user to retrieve the lost password
 *
 * @since 2.8.0
 *
 * @param string $redirect Path to redirect to on login.
 * @return string Lost password URL.
 */
function wp_lostpassword_url( $redirect = '' ) {
	$args = array( 'action' => 'lostpassword' );
	if ( !empty($redirect) ) {
		$args['redirect_to'] = $redirect;
	}

	$lostpassword_url = add_query_arg( $args, network_site_url('wp-login.php', 'login') );

	/**
	 * Filter the Lost Password URL.
	 *
	 * @since 2.8.0
	 *
	 * @param string $lostpassword_url The lost password page URL.
	 * @param string $redirect         The path to redirect to on login.
	 */
	return apply_filters( 'lostpassword_url', $lostpassword_url, $redirect );
}

/**
 * Display the Registration or Admin link.
 *
 * Display a link which allows the user to navigate to the registration page if
 * not logged in and registration is enabled or to the dashboard if logged in.
 *
 * @since 1.5.0
 *
 * @param string $before Text to output before the link. Default `<li>`.
 * @param string $after  Text to output after the link. Default `</li>`.
 * @param bool   $echo   Default to echo and not return the link.
 * @return string|void String when retrieving.
 */
function wp_register( $before = '<li>', $after = '</li>', $echo = true ) {
	if ( ! is_user_logged_in() ) {
		if ( get_option('users_can_register') )
			$link = $before . '<a href="' . esc_url( wp_registration_url() ) . '">' . __('Register') . '</a>' . $after;
		else
			$link = '';
	} else {
		$link = $before . '<a href="' . admin_url() . '">' . __('Site Admin') . '</a>' . $after;
	}

	/**
	 * Filter the HTML link to the Registration or Admin page.
	 *
	 * Users are sent to the admin page if logged-in, or the registration page
	 * if enabled and logged-out.
	 *
	 * @since 1.5.0
	 *
	 * @param string $link The HTML code for the link to the Registration or Admin page.
	 */
	$link = apply_filters( 'register', $link );

	if ( $echo ) {
		echo $link;
	} else {
		return $link;
	}
}

/**
 * Theme container function for the 'wp_meta' action.
 *
 * The 'wp_meta' action can have several purposes, depending on how you use it,
 * but one purpose might have been to allow for theme switching.
 *
 * @since 1.5.0
 *
 * @link https://core.trac.wordpress.org/ticket/1458 Explanation of 'wp_meta' action.
 */
function wp_meta() {
	/**
	 * Fires before displaying echoed content in the sidebar.
	 *
	 * @since 1.5.0
	 */
	do_action( 'wp_meta' );
}

/**
 * Display information about the blog.
 *
 * @see get_bloginfo() For possible values for the parameter.
 * @since 0.71
 *
 * @param string $show What to display.
 */
function bloginfo( $show='' ) {
	echo get_bloginfo( $show, 'display' );
}

/**
 * Retrieve information about the blog.
 *
 * Some show parameter values are deprecated and will be removed in future
 * versions. These options will trigger the {@see _deprecated_argument()}
 * function. The deprecated blog info options are listed in the function
 * contents.
 *
 * The possible values for the 'show' parameter are listed below.
 *
 * 1. url - Blog URI to homepage.
 * 2. wpurl - Blog URI path to WordPress.
 * 3. description - Secondary title
 *
 * The feed URL options can be retrieved from 'rdf_url' (RSS 0.91),
 * 'rss_url' (RSS 1.0), 'rss2_url' (RSS 2.0), or 'atom_url' (Atom feed). The
 * comment feeds can be retrieved from the 'comments_atom_url' (Atom comment
 * feed) or 'comments_rss2_url' (RSS 2.0 comment feed).
 *
 * @since 0.71
 *
 * @global string $wp_version
 *
 * @param string $show   Blog info to retrieve.
 * @param string $filter How to filter what is retrieved.
 * @return string Mostly string values, might be empty.
 */
function get_bloginfo( $show = '', $filter = 'raw' ) {
	switch( $show ) {
		case 'home' : // DEPRECATED
		case 'siteurl' : // DEPRECATED
			_deprecated_argument( __FUNCTION__, '2.2', sprintf(
				/* translators: 1: 'siteurl'/'home' argument, 2: bloginfo() function name, 3: 'url' argument */
				__( 'The %1$s option is deprecated for the family of %2$s functions. Use the %3$s option instead.' ),
				'<code>' . $show . '</code>',
				'<code>bloginfo()</code>',
				'<code>url</code>'
			) );
		case 'url' :
			$output = home_url();
			break;
		case 'wpurl' :
			$output = site_url();
			break;
		case 'description':
			$output = get_option('blogdescription');
			break;
		case 'rdf_url':
			$output = get_feed_link('rdf');
			break;
		case 'rss_url':
			$output = get_feed_link('rss');
			break;
		case 'rss2_url':
			$output = get_feed_link('rss2');
			break;
		case 'atom_url':
			$output = get_feed_link('atom');
			break;
		case 'comments_atom_url':
			$output = get_feed_link('comments_atom');
			break;
		case 'comments_rss2_url':
			$output = get_feed_link('comments_rss2');
			break;
		case 'pingback_url':
			$output = site_url( 'xmlrpc.php' );
			break;
		case 'stylesheet_url':
			$output = get_stylesheet_uri();
			break;
		case 'stylesheet_directory':
			$output = get_stylesheet_directory_uri();
			break;
		case 'template_directory':
		case 'template_url':
			$output = get_template_directory_uri();
			break;
		case 'admin_email':
			$output = get_option('admin_email');
			break;
		case 'charset':
			$output = get_option('blog_charset');
			if ('' == $output) $output = 'UTF-8';
			break;
		case 'html_type' :
			$output = get_option('html_type');
			break;
		case 'version':
			global $wp_version;
			$output = $wp_version;
			break;
		case 'language':
			$output = get_locale();
			$output = str_replace('_', '-', $output);
			break;
		case 'text_direction':
			_deprecated_argument( __FUNCTION__, '2.2', sprintf(
				/* translators: 1: 'text_direction' argument, 2: bloginfo() function name, 3: is_rtl() function name */
				__( 'The %1$s option is deprecated for the family of %2$s functions. Use the %3$s function instead.' ),
				'<code>' . $show . '</code>',
				'<code>bloginfo()</code>',
				'<code>is_rtl()</code>'
			) );
			if ( function_exists( 'is_rtl' ) ) {
				$output = is_rtl() ? 'rtl' : 'ltr';
			} else {
				$output = 'ltr';
			}
			break;
		case 'name':
		default:
			$output = get_option('blogname');
			break;
	}

	$url = true;
	if (strpos($show, 'url') === false &&
		strpos($show, 'directory') === false &&
		strpos($show, 'home') === false)
		$url = false;

	if ( 'display' == $filter ) {
		if ( $url ) {
			/**
			 * Filter the URL returned by get_bloginfo().
			 *
			 * @since 2.0.5
			 *
			 * @param mixed $output The URL returned by bloginfo().
			 * @param mixed $show   Type of information requested.
			 */
			$output = apply_filters( 'bloginfo_url', $output, $show );
		} else {
			/**
			 * Filter the site information returned by get_bloginfo().
			 *
			 * @since 0.71
			 *
			 * @param mixed $output The requested non-URL site information.
			 * @param mixed $show   Type of information requested.
			 */
			$output = apply_filters( 'bloginfo', $output, $show );
		}
	}

	return $output;
}

/**
 * Returns the Site Icon URL.
 *
 * @param  int    $size    Size of the site icon.
 * @param  string $url     Fallback url if no site icon is found.
 * @param  int    $blog_id Id of the blog to get the site icon for.
 * @return string          Site Icon URL.
 */
function get_site_icon_url( $size = 512, $url = '', $blog_id = 0 ) {
	if ( $blog_id && is_multisite() ) {
		$site_icon_id = get_blog_option( $blog_id, 'site_icon' );
	} else {
		$site_icon_id = get_option( 'site_icon' );
	}

	if ( $site_icon_id ) {
		if ( $size >= 512 ) {
			$size_data = 'full';
		} else {
			$size_data = array( $size, $size );
		}
		$url_data = wp_get_attachment_image_src( $site_icon_id, $size_data );
		if ( $url_data ) {
			$url = $url_data[0];
		}
	}

	return $url;
}

/**
 * Displays the Site Icon URL.
 *
 * @param  int    $size    Size of the site icon.
 * @param  string $url     Fallback url if no site icon is found.
 * @param  int    $blog_id Id of the blog to get the site icon for.
 */
function site_icon_url( $size = 512, $url = '', $blog_id = 0 ) {
	echo esc_url( get_site_icon_url( $size, $url, $blog_id ) );
}

/**
 * Whether the site has a Site Icon.
 *
 * @param int $blog_id Optional. Blog ID. Default: Current blog.
 * @return bool
 */
function has_site_icon( $blog_id = 0 ) {
	return (bool) get_site_icon_url( 512, '', $blog_id );
}

/**
 * Display title tag with contents.
 *
 * @ignore
 * @since 4.1.0
 * @access private
 *
 * @see wp_title()
 */
function _wp_render_title_tag() {
	if ( ! current_theme_supports( 'title-tag' ) ) {
		return;
	}

	// This can only work internally on wp_head.
	if ( ! did_action( 'wp_head' ) && ! doing_action( 'wp_head' ) ) {
		return;
	}

	echo '<title>' . wp_title( '|', false, 'right' ) . "</title>\n";
}

/**
 * Display or retrieve page title for all areas of blog.
 *
 * By default, the page title will display the separator before the page title,
 * so that the blog title will be before the page title. This is not good for
 * title display, since the blog title shows up on most tabs and not what is
 * important, which is the page that the user is looking at.
 *
 * There are also SEO benefits to having the blog title after or to the 'right'
 * or the page title. However, it is mostly common sense to have the blog title
 * to the right with most browsers supporting tabs. You can achieve this by
 * using the seplocation parameter and setting the value to 'right'. This change
 * was introduced around 2.5.0, in case backwards compatibility of themes is
 * important.
 *
 * @since 1.0.0
 *
 * @global WP_Locale $wp_locale
 * @global int       $page
 * @global int       $paged
 *
 * @param string $sep         Optional, default is '&raquo;'. How to separate the various items within the page title.
 * @param bool   $display     Optional, default is true. Whether to display or retrieve title.
 * @param string $seplocation Optional. Direction to display title, 'right'.
 * @return string|void String on retrieve.
 */
function wp_title( $sep = '&raquo;', $display = true, $seplocation = '' ) {
	global $wp_locale, $page, $paged;

	$m = get_query_var('m');
	$year = get_query_var('year');
	$monthnum = get_query_var('monthnum');
	$day = get_query_var('day');
	$search = get_query_var('s');
	$title = '';

	$t_sep = '%WP_TITILE_SEP%'; // Temporary separator, for accurate flipping, if necessary

	// If there is a post
	if ( is_single() || ( is_home() && !is_front_page() ) || ( is_page() && !is_front_page() ) ) {
		$title = single_post_title( '', false );
	}

	// If there's a post type archive
	if ( is_post_type_archive() ) {
		$post_type = get_query_var( 'post_type' );
		if ( is_array( $post_type ) )
			$post_type = reset( $post_type );
		$post_type_object = get_post_type_object( $post_type );
		if ( ! $post_type_object->has_archive )
			$title = post_type_archive_title( '', false );
	}

	// If there's a category or tag
	if ( is_category() || is_tag() ) {
		$title = single_term_title( '', false );
	}

	// If there's a taxonomy
	if ( is_tax() ) {
		$term = get_queried_object();
		if ( $term ) {
			$tax = get_taxonomy( $term->taxonomy );
			$title = single_term_title( $tax->labels->name . $t_sep, false );
		}
	}

	// If there's an author
	if ( is_author() && ! is_post_type_archive() ) {
		$author = get_queried_object();
		if ( $author )
			$title = $author->display_name;
	}

	// Post type archives with has_archive should override terms.
	if ( is_post_type_archive() && $post_type_object->has_archive )
		$title = post_type_archive_title( '', false );

	// If there's a month
	if ( is_archive() && !empty($m) ) {
		$my_year = substr($m, 0, 4);
		$my_month = $wp_locale->get_month(substr($m, 4, 2));
		$my_day = intval(substr($m, 6, 2));
		$title = $my_year . ( $my_month ? $t_sep . $my_month : '' ) . ( $my_day ? $t_sep . $my_day : '' );
	}

	// If there's a year
	if ( is_archive() && !empty($year) ) {
		$title = $year;
		if ( !empty($monthnum) )
			$title .= $t_sep . $wp_locale->get_month($monthnum);
		if ( !empty($day) )
			$title .= $t_sep . zeroise($day, 2);
	}

	// If it's a search
	if ( is_search() ) {
		/* translators: 1: separator, 2: search phrase */
		$title = sprintf(__('Search Results %1$s %2$s'), $t_sep, strip_tags($search));
	}

	// If it's a 404 page
	if ( is_404() ) {
		$title = __('Page not found');
	}

	$prefix = '';
	if ( !empty($title) )
		$prefix = " $sep ";

	/**
	 * Filter the parts of the page title.
	 *
	 * @since 4.0.0
	 *
	 * @param array $title_array Parts of the page title.
	 */
	$title_array = apply_filters( 'wp_title_parts', explode( $t_sep, $title ) );

 	// Determines position of the separator and direction of the breadcrumb
	if ( 'right' == $seplocation ) { // sep on right, so reverse the order
		$title_array = array_reverse( $title_array );
		$title = implode( " $sep ", $title_array ) . $prefix;
	} else {
		$title = $prefix . implode( " $sep ", $title_array );
	}

	if ( current_theme_supports( 'title-tag' ) && ! is_feed() ) {
		$title .= get_bloginfo( 'name', 'display' );

		$site_description = get_bloginfo( 'description', 'display' );
		if ( $site_description && ( is_home() || is_front_page() ) ) {
			$title .= " $sep $site_description";
		}

		if ( ( $paged >= 2 || $page >= 2 ) && ! is_404() ) {
			$title .= " $sep " . sprintf( __( 'Page %s' ), max( $paged, $page ) );
		}
	}

	/**
	 * Filter the text of the page title.
	 *
	 * @since 2.0.0
	 *
	 * @param string $title       Page title.
	 * @param string $sep         Title separator.
	 * @param string $seplocation Location of the separator (left or right).
	 */
	$title = apply_filters( 'wp_title', $title, $sep, $seplocation );

	// Send it out
	if ( $display )
		echo $title;
	else
		return $title;

}

/**
 * Display or retrieve page title for post.
 *
 * This is optimized for single.php template file for displaying the post title.
 *
 * It does not support placing the separator after the title, but by leaving the
 * prefix parameter empty, you can set the title separator manually. The prefix
 * does not automatically place a space between the prefix, so if there should
 * be a space, the parameter value will need to have it at the end.
 *
 * @since 0.71
 *
 * @param string $prefix  Optional. What to display before the title.
 * @param bool   $display Optional, default is true. Whether to display or retrieve title.
 * @return string|void Title when retrieving.
 */
function single_post_title( $prefix = '', $display = true ) {
	$_post = get_queried_object();

	if ( !isset($_post->post_title) )
		return;

	/**
	 * Filter the page title for a single post.
	 *
	 * @since 0.71
	 *
	 * @param string $_post_title The single post page title.
	 * @param object $_post       The current queried object as returned by get_queried_object().
	 */
	$title = apply_filters( 'single_post_title', $_post->post_title, $_post );
	if ( $display )
		echo $prefix . $title;
	else
		return $prefix . $title;
}

/**
 * Display or retrieve title for a post type archive.
 *
 * This is optimized for archive.php and archive-{$post_type}.php template files
 * for displaying the title of the post type.
 *
 * @since 3.1.0
 *
 * @param string $prefix  Optional. What to display before the title.
 * @param bool   $display Optional, default is true. Whether to display or retrieve title.
 * @return string|void Title when retrieving, null when displaying or failure.
 */
function post_type_archive_title( $prefix = '', $display = true ) {
	if ( ! is_post_type_archive() )
		return;

	$post_type = get_query_var( 'post_type' );
	if ( is_array( $post_type ) )
		$post_type = reset( $post_type );

	$post_type_obj = get_post_type_object( $post_type );

	/**
	 * Filter the post type archive title.
	 *
	 * @since 3.1.0
	 *
	 * @param string $post_type_name Post type 'name' label.
	 * @param string $post_type      Post type.
	 */
	$title = apply_filters( 'post_type_archive_title', $post_type_obj->labels->name, $post_type );

	if ( $display )
		echo $prefix . $title;
	else
		return $prefix . $title;
}

/**
 * Display or retrieve page title for category archive.
 *
 * This is useful for category template file or files, because it is optimized
 * for category page title and with less overhead than {@link wp_title()}.
 *
 * It does not support placing the separator after the title, but by leaving the
 * prefix parameter empty, you can set the title separator manually. The prefix
 * does not automatically place a space between the prefix, so if there should
 * be a space, the parameter value will need to have it at the end.
 *
 * @since 0.71
 *
 * @param string $prefix  Optional. What to display before the title.
 * @param bool   $display Optional, default is true. Whether to display or retrieve title.
 * @return string|void Title when retrieving.
 */
function single_cat_title( $prefix = '', $display = true ) {
	return single_term_title( $prefix, $display );
}

/**
 * Display or retrieve page title for tag post archive.
 *
 * Useful for tag template files for displaying the tag page title. It has less
 * overhead than {@link wp_title()}, because of its limited implementation.
 *
 * It does not support placing the separator after the title, but by leaving the
 * prefix parameter empty, you can set the title separator manually. The prefix
 * does not automatically place a space between the prefix, so if there should
 * be a space, the parameter value will need to have it at the end.
 *
 * @since 2.3.0
 *
 * @param string $prefix  Optional. What to display before the title.
 * @param bool   $display Optional, default is true. Whether to display or retrieve title.
 * @return string|void Title when retrieving.
 */
function single_tag_title( $prefix = '', $display = true ) {
	return single_term_title( $prefix, $display );
}

/**
 * Display or retrieve page title for taxonomy term archive.
 *
 * Useful for taxonomy term template files for displaying the taxonomy term page title.
 * It has less overhead than {@link wp_title()}, because of its limited implementation.
 *
 * It does not support placing the separator after the title, but by leaving the
 * prefix parameter empty, you can set the title separator manually. The prefix
 * does not automatically place a space between the prefix, so if there should
 * be a space, the parameter value will need to have it at the end.
 *
 * @since 3.1.0
 *
 * @param string $prefix  Optional. What to display before the title.
 * @param bool   $display Optional, default is true. Whether to display or retrieve title.
 * @return string|void Title when retrieving.
 */
function single_term_title( $prefix = '', $display = true ) {
	$term = get_queried_object();

	if ( !$term )
		return;

	if ( is_category() ) {
		/**
		 * Filter the category archive page title.
		 *
		 * @since 2.0.10
		 *
		 * @param string $term_name Category name for archive being displayed.
		 */
		$term_name = apply_filters( 'single_cat_title', $term->name );
	} elseif ( is_tag() ) {
		/**
		 * Filter the tag archive page title.
		 *
		 * @since 2.3.0
		 *
		 * @param string $term_name Tag name for archive being displayed.
		 */
		$term_name = apply_filters( 'single_tag_title', $term->name );
	} elseif ( is_tax() ) {
		/**
		 * Filter the custom taxonomy archive page title.
		 *
		 * @since 3.1.0
		 *
		 * @param string $term_name Term name for archive being displayed.
		 */
		$term_name = apply_filters( 'single_term_title', $term->name );
	} else {
		return;
	}

	if ( empty( $term_name ) )
		return;

	if ( $display )
		echo $prefix . $term_name;
	else
		return $prefix . $term_name;
}

/**
 * Display or retrieve page title for post archive based on date.
 *
 * Useful for when the template only needs to display the month and year, if
 * either are available. Optimized for just this purpose, so if it is all that
 * is needed, should be better than {@link wp_title()}.
 *
 * It does not support placing the separator after the title, but by leaving the
 * prefix parameter empty, you can set the title separator manually. The prefix
 * does not automatically place a space between the prefix, so if there should
 * be a space, the parameter value will need to have it at the end.
 *
 * @since 0.71
 *
 * @global WP_Locale $wp_locale
 *
 * @param string $prefix  Optional. What to display before the title.
 * @param bool   $display Optional, default is true. Whether to display or retrieve title.
 * @return string|void Title when retrieving.
 */
function single_month_title($prefix = '', $display = true ) {
	global $wp_locale;

	$m = get_query_var('m');
	$year = get_query_var('year');
	$monthnum = get_query_var('monthnum');

	if ( !empty($monthnum) && !empty($year) ) {
		$my_year = $year;
		$my_month = $wp_locale->get_month($monthnum);
	} elseif ( !empty($m) ) {
		$my_year = substr($m, 0, 4);
		$my_month = $wp_locale->get_month(substr($m, 4, 2));
	}

	if ( empty($my_month) )
		return false;

	$result = $prefix . $my_month . $prefix . $my_year;

	if ( !$display )
		return $result;
	echo $result;
}

/**
 * Display the archive title based on the queried object.
 *
 * @since 4.1.0
 *
 * @see get_the_archive_title()
 *
 * @param string $before Optional. Content to prepend to the title. Default empty.
 * @param string $after  Optional. Content to append to the title. Default empty.
 */
function the_archive_title( $before = '', $after = '' ) {
	$title = get_the_archive_title();

	if ( ! empty( $title ) ) {
		echo $before . $title . $after;
	}
}

/**
 * Retrieve the archive title based on the queried object.
 *
 * @since 4.1.0
 *
 * @return string Archive title.
 */
function get_the_archive_title() {
	if ( is_category() ) {
		$title = sprintf( __( 'Category: %s' ), single_cat_title( '', false ) );
	} elseif ( is_tag() ) {
		$title = sprintf( __( 'Tag: %s' ), single_tag_title( '', false ) );
	} elseif ( is_author() ) {
		$title = sprintf( __( 'Author: %s' ), '<span class="vcard">' . get_the_author() . '</span>' );
	} elseif ( is_year() ) {
		$title = sprintf( __( 'Year: %s' ), get_the_date( _x( 'Y', 'yearly archives date format' ) ) );
	} elseif ( is_month() ) {
		$title = sprintf( __( 'Month: %s' ), get_the_date( _x( 'F Y', 'monthly archives date format' ) ) );
	} elseif ( is_day() ) {
		$title = sprintf( __( 'Day: %s' ), get_the_date( _x( 'F j, Y', 'daily archives date format' ) ) );
	} elseif ( is_tax( 'post_format' ) ) {
		if ( is_tax( 'post_format', 'post-format-aside' ) ) {
			$title = _x( 'Asides', 'post format archive title' );
		} elseif ( is_tax( 'post_format', 'post-format-gallery' ) ) {
			$title = _x( 'Galleries', 'post format archive title' );
		} elseif ( is_tax( 'post_format', 'post-format-image' ) ) {
			$title = _x( 'Images', 'post format archive title' );
		} elseif ( is_tax( 'post_format', 'post-format-video' ) ) {
			$title = _x( 'Videos', 'post format archive title' );
		} elseif ( is_tax( 'post_format', 'post-format-quote' ) ) {
			$title = _x( 'Quotes', 'post format archive title' );
		} elseif ( is_tax( 'post_format', 'post-format-link' ) ) {
			$title = _x( 'Links', 'post format archive title' );
		} elseif ( is_tax( 'post_format', 'post-format-status' ) ) {
			$title = _x( 'Statuses', 'post format archive title' );
		} elseif ( is_tax( 'post_format', 'post-format-audio' ) ) {
			$title = _x( 'Audio', 'post format archive title' );
		} elseif ( is_tax( 'post_format', 'post-format-chat' ) ) {
			$title = _x( 'Chats', 'post format archive title' );
		}
	} elseif ( is_post_type_archive() ) {
		$title = sprintf( __( 'Archives: %s' ), post_type_archive_title( '', false ) );
	} elseif ( is_tax() ) {
		$tax = get_taxonomy( get_queried_object()->taxonomy );
		/* translators: 1: Taxonomy singular name, 2: Current taxonomy term */
		$title = sprintf( __( '%1$s: %2$s' ), $tax->labels->singular_name, single_term_title( '', false ) );
	} else {
		$title = __( 'Archives' );
	}

	/**
	 * Filter the archive title.
	 *
	 * @since 4.1.0
	 *
	 * @param string $title Archive title to be displayed.
	 */
	return apply_filters( 'get_the_archive_title', $title );
}

/**
 * Display category, tag, or term description.
 *
 * @since 4.1.0
 *
 * @see get_the_archive_description()
 *
 * @param string $before Optional. Content to prepend to the description. Default empty.
 * @param string $after  Optional. Content to append to the description. Default empty.
 */
function the_archive_description( $before = '', $after = '' ) {
	$description = get_the_archive_description();
	if ( $description ) {
		echo $before . $description . $after;
	}
}

/**
 * Retrieve category, tag, or term description.
 *
 * @since 4.1.0
 *
 * @return string Archive description.
 */
function get_the_archive_description() {
	/**
	 * Filter the archive description.
	 *
	 * @since 4.1.0
	 *
	 * @see term_description()
	 *
	 * @param string $description Archive description to be displayed.
	 */
	return apply_filters( 'get_the_archive_description', term_description() );
}

/**
 * Retrieve archive link content based on predefined or custom code.
 *
 * The format can be one of four styles. The 'link' for head element, 'option'
 * for use in the select element, 'html' for use in list (either ol or ul HTML
 * elements). Custom content is also supported using the before and after
 * parameters.
 *
 * The 'link' format uses the `<link>` HTML element with the **archives**
 * relationship. The before and after parameters are not used. The text
 * parameter is used to describe the link.
 *
 * The 'option' format uses the option HTML element for use in select element.
 * The value is the url parameter and the before and after parameters are used
 * between the text description.
 *
 * The 'html' format, which is the default, uses the li HTML element for use in
 * the list HTML elements. The before parameter is before the link and the after
 * parameter is after the closing link.
 *
 * The custom format uses the before parameter before the link ('a' HTML
 * element) and the after parameter after the closing link tag. If the above
 * three values for the format are not used, then custom format is assumed.
 *
 * @since 1.0.0
 *
 * @todo Properly document optional arguments as such
 *
 * @param string $url    URL to archive.
 * @param string $text   Archive text description.
 * @param string $format Optional, default is 'html'. Can be 'link', 'option', 'html', or custom.
 * @param string $before Optional.
 * @param string $after  Optional.
 * @return string HTML link content for archive.
 */
function get_archives_link($url, $text, $format = 'html', $before = '', $after = '') {
	$text = wptexturize($text);
	$url = esc_url($url);

	if ('link' == $format)
		$link_html = "\t<link rel='archives' title='" . esc_attr( $text ) . "' href='$url' />\n";
	elseif ('option' == $format)
		$link_html = "\t<option value='$url'>$before $text $after</option>\n";
	elseif ('html' == $format)
		$link_html = "\t<li>$before<a href='$url'>$text</a>$after</li>\n";
	else // custom
		$link_html = "\t$before<a href='$url'>$text</a>$after\n";

	/**
	 * Filter the archive link content.
	 *
	 * @since 2.6.0
	 *
	 * @param string $link_html The archive HTML link content.
	 */
	return apply_filters( 'get_archives_link', $link_html );
}

/**
 * Display archive links based on type and format.
 *
 * @since 1.2.0
 *
 * @see get_archives_link()
 *
 * @global wpdb      $wpdb
 * @global WP_Locale $wp_locale
 *
 * @param string|array $args {
 *     Default archive links arguments. Optional.
 *
 *     @type string     $type            Type of archive to retrieve. Accepts 'daily', 'weekly', 'monthly',
 *                                       'yearly', 'postbypost', or 'alpha'. Both 'postbypost' and 'alpha'
 *                                       display the same archive link list as well as post titles instead
 *                                       of displaying dates. The difference between the two is that 'alpha'
 *                                       will order by post title and 'postbypost' will order by post date.
 *                                       Default 'monthly'.
 *     @type string|int $limit           Number of links to limit the query to. Default empty (no limit).
 *     @type string     $format          Format each link should take using the $before and $after args.
 *                                       Accepts 'link' (`<link>` tag), 'option' (`<option>` tag), 'html'
 *                                       (`<li>` tag), or a custom format, which generates a link anchor
 *                                       with $before preceding and $after succeeding. Default 'html'.
 *     @type string     $before          Markup to prepend to the beginning of each link. Default empty.
 *     @type string     $after           Markup to append to the end of each link. Default empty.
 *     @type bool       $show_post_count Whether to display the post count alongside the link. Default false.
 *     @type bool|int   $echo            Whether to echo or return the links list. Default 1|true to echo.
 *     @type string     $order           Whether to use ascending or descending order. Accepts 'ASC', or 'DESC'.
 *                                       Default 'DESC'.
 * }
 * @return string|void String when retrieving.
 */
function wp_get_archives( $args = '' ) {
	global $wpdb, $wp_locale;

	$defaults = array(
		'type' => 'monthly', 'limit' => '',
		'format' => 'html', 'before' => '',
		'after' => '', 'show_post_count' => false,
		'echo' => 1, 'order' => 'DESC',
	);

	$r = wp_parse_args( $args, $defaults );

	if ( '' == $r['type'] ) {
		$r['type'] = 'monthly';
	}

	if ( ! empty( $r['limit'] ) ) {
		$r['limit'] = absint( $r['limit'] );
		$r['limit'] = ' LIMIT ' . $r['limit'];
	}

	$order = strtoupper( $r['order'] );
	if ( $order !== 'ASC' ) {
		$order = 'DESC';
	}

	// this is what will separate dates on weekly archive links
	$archive_week_separator = '&#8211;';

	// over-ride general date format ? 0 = no: use the date format set in Options, 1 = yes: over-ride
	$archive_date_format_over_ride = 0;

	// options for daily archive (only if you over-ride the general date format)
	$archive_day_date_format = 'Y/m/d';

	// options for weekly archive (only if you over-ride the general date format)
	$archive_week_start_date_format = 'Y/m/d';
	$archive_week_end_date_format	= 'Y/m/d';

	if ( ! $archive_date_format_over_ride ) {
		$archive_day_date_format = get_option( 'date_format' );
		$archive_week_start_date_format = get_option( 'date_format' );
		$archive_week_end_date_format = get_option( 'date_format' );
	}

	/**
	 * Filter the SQL WHERE clause for retrieving archives.
	 *
	 * @since 2.2.0
	 *
	 * @param string $sql_where Portion of SQL query containing the WHERE clause.
	 * @param array  $r         An array of default arguments.
	 */
	$where = apply_filters( 'getarchives_where', "WHERE post_type = 'post' AND post_status = 'publish'", $r );

	/**
	 * Filter the SQL JOIN clause for retrieving archives.
	 *
	 * @since 2.2.0
	 *
	 * @param string $sql_join Portion of SQL query containing JOIN clause.
	 * @param array  $r        An array of default arguments.
	 */
	$join = apply_filters( 'getarchives_join', '', $r );

	$output = '';

	$last_changed = wp_cache_get( 'last_changed', 'posts' );
	if ( ! $last_changed ) {
		$last_changed = microtime();
		wp_cache_set( 'last_changed', $last_changed, 'posts' );
	}

	$limit = $r['limit'];

	if ( 'monthly' == $r['type'] ) {
		$query = "SELECT YEAR(post_date) AS `year`, MONTH(post_date) AS `month`, count(ID) as posts FROM $wpdb->posts $join $where GROUP BY YEAR(post_date), MONTH(post_date) ORDER BY post_date $order $limit";
		$key = md5( $query );
		$key = "wp_get_archives:$key:$last_changed";
		if ( ! $results = wp_cache_get( $key, 'posts' ) ) {
			$results = $wpdb->get_results( $query );
			wp_cache_set( $key, $results, 'posts' );
		}
		if ( $results ) {
			$after = $r['after'];
			foreach ( (array) $results as $result ) {
				$url = get_month_link( $result->year, $result->month );
				/* translators: 1: month name, 2: 4-digit year */
				$text = sprintf( __( '%1$s %2$d' ), $wp_locale->get_month( $result->month ), $result->year );
				if ( $r['show_post_count'] ) {
					$r['after'] = '&nbsp;(' . $result->posts . ')' . $after;
				}
				$output .= get_archives_link( $url, $text, $r['format'], $r['before'], $r['after'] );
			}
		}
	} elseif ( 'yearly' == $r['type'] ) {
		$query = "SELECT YEAR(post_date) AS `year`, count(ID) as posts FROM $wpdb->posts $join $where GROUP BY YEAR(post_date) ORDER BY post_date $order $limit";
		$key = md5( $query );
		$key = "wp_get_archives:$key:$last_changed";
		if ( ! $results = wp_cache_get( $key, 'posts' ) ) {
			$results = $wpdb->get_results( $query );
			wp_cache_set( $key, $results, 'posts' );
		}
		if ( $results ) {
			$after = $r['after'];
			foreach ( (array) $results as $result) {
				$url = get_year_link( $result->year );
				$text = sprintf( '%d', $result->year );
				if ( $r['show_post_count'] ) {
					$r['after'] = '&nbsp;(' . $result->posts . ')' . $after;
				}
				$output .= get_archives_link( $url, $text, $r['format'], $r['before'], $r['after'] );
			}
		}
	} elseif ( 'daily' == $r['type'] ) {
		$query = "SELECT YEAR(post_date) AS `year`, MONTH(post_date) AS `month`, DAYOFMONTH(post_date) AS `dayofmonth`, count(ID) as posts FROM $wpdb->posts $join $where GROUP BY YEAR(post_date), MONTH(post_date), DAYOFMONTH(post_date) ORDER BY post_date $order $limit";
		$key = md5( $query );
		$key = "wp_get_archives:$key:$last_changed";
		if ( ! $results = wp_cache_get( $key, 'posts' ) ) {
			$results = $wpdb->get_results( $query );
			wp_cache_set( $key, $results, 'posts' );
		}
		if ( $results ) {
			$after = $r['after'];
			foreach ( (array) $results as $result ) {
				$url  = get_day_link( $result->year, $result->month, $result->dayofmonth );
				$date = sprintf( '%1$d-%2$02d-%3$02d 00:00:00', $result->year, $result->month, $result->dayofmonth );
				$text = mysql2date( $archive_day_date_format, $date );
				if ( $r['show_post_count'] ) {
					$r['after'] = '&nbsp;(' . $result->posts . ')' . $after;
				}
				$output .= get_archives_link( $url, $text, $r['format'], $r['before'], $r['after'] );
			}
		}
	} elseif ( 'weekly' == $r['type'] ) {
		$week = _wp_mysql_week( '`post_date`' );
		$query = "SELECT DISTINCT $week AS `week`, YEAR( `post_date` ) AS `yr`, DATE_FORMAT( `post_date`, '%Y-%m-%d' ) AS `yyyymmdd`, count( `ID` ) AS `posts` FROM `$wpdb->posts` $join $where GROUP BY $week, YEAR( `post_date` ) ORDER BY `post_date` $order $limit";
		$key = md5( $query );
		$key = "wp_get_archives:$key:$last_changed";
		if ( ! $results = wp_cache_get( $key, 'posts' ) ) {
			$results = $wpdb->get_results( $query );
			wp_cache_set( $key, $results, 'posts' );
		}
		$arc_w_last = '';
		if ( $results ) {
			$after = $r['after'];
			foreach ( (array) $results as $result ) {
				if ( $result->week != $arc_w_last ) {
					$arc_year       = $result->yr;
					$arc_w_last     = $result->week;
					$arc_week       = get_weekstartend( $result->yyyymmdd, get_option( 'start_of_week' ) );
					$arc_week_start = date_i18n( $archive_week_start_date_format, $arc_week['start'] );
					$arc_week_end   = date_i18n( $archive_week_end_date_format, $arc_week['end'] );
					$url            = sprintf( '%1$s/%2$s%3$sm%4$s%5$s%6$sw%7$s%8$d', home_url(), '', '?', '=', $arc_year, '&amp;', '=', $result->week );
					$text           = $arc_week_start . $archive_week_separator . $arc_week_end;
					if ( $r['show_post_count'] ) {
						$r['after'] = '&nbsp;(' . $result->posts . ')' . $after;
					}
					$output .= get_archives_link( $url, $text, $r['format'], $r['before'], $r['after'] );
				}
			}
		}
	} elseif ( ( 'postbypost' == $r['type'] ) || ('alpha' == $r['type'] ) ) {
		$orderby = ( 'alpha' == $r['type'] ) ? 'post_title ASC ' : 'post_date DESC, ID DESC ';
		$query = "SELECT * FROM $wpdb->posts $join $where ORDER BY $orderby $limit";
		$key = md5( $query );
		$key = "wp_get_archives:$key:$last_changed";
		if ( ! $results = wp_cache_get( $key, 'posts' ) ) {
			$results = $wpdb->get_results( $query );
			wp_cache_set( $key, $results, 'posts' );
		}
		if ( $results ) {
			foreach ( (array) $results as $result ) {
				if ( $result->post_date != '0000-00-00 00:00:00' ) {
					$url = get_permalink( $result );
					if ( $result->post_title ) {
						/** This filter is documented in wp-includes/post-template.php */
						$text = strip_tags( apply_filters( 'the_title', $result->post_title, $result->ID ) );
					} else {
						$text = $result->ID;
					}
					$output .= get_archives_link( $url, $text, $r['format'], $r['before'], $r['after'] );
				}
			}
		}
	}
	if ( $r['echo'] ) {
		echo $output;
	} else {
		return $output;
	}
}

/**
 * Get number of days since the start of the week.
 *
 * @since 1.5.0
 *
 * @param int $num Number of day.
 * @return int Days since the start of the week.
 */
function calendar_week_mod($num) {
	$base = 7;
	return ($num - $base*floor($num/$base));
}

/**
 * Display calendar with days that have posts as links.
 *
 * The calendar is cached, which will be retrieved, if it exists. If there are
 * no posts for the month, then it will not be displayed.
 *
 * @since 1.0.0
 *
 * @global wpdb      $wpdb
 * @global int       $m
 * @global int       $monthnum
 * @global int       $year
 * @global WP_Locale $wp_locale
 * @global array     $posts
 *
 * @param bool $initial Optional, default is true. Use initial calendar names.
 * @param bool $echo    Optional, default is true. Set to false for return.
 * @return string|void String when retrieving.
 */
function get_calendar($initial = true, $echo = true) {
	global $wpdb, $m, $monthnum, $year, $wp_locale, $posts;

	$key = md5( $m . $monthnum . $year );
	if ( $cache = wp_cache_get( 'get_calendar', 'calendar' ) ) {
		if ( is_array($cache) && isset( $cache[ $key ] ) ) {
			if ( $echo ) {
				/** This filter is documented in wp-includes/general-template.php */
				echo apply_filters( 'get_calendar', $cache[$key] );
				return;
			} else {
				/** This filter is documented in wp-includes/general-template.php */
				return apply_filters( 'get_calendar', $cache[$key] );
			}
		}
	}

	if ( !is_array($cache) )
		$cache = array();

	// Quick check. If we have no posts at all, abort!
	if ( !$posts ) {
		$gotsome = $wpdb->get_var("SELECT 1 as test FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'publish' LIMIT 1");
		if ( !$gotsome ) {
			$cache[ $key ] = '';
			wp_cache_set( 'get_calendar', $cache, 'calendar' );
			return;
		}
	}

	if ( isset($_GET['w']) )
		$w = ''.intval($_GET['w']);

	// week_begins = 0 stands for Sunday
	$week_begins = intval(get_option('start_of_week'));

	// Let's figure out when we are
	if ( !empty($monthnum) && !empty($year) ) {
		$thismonth = ''.zeroise(intval($monthnum), 2);
		$thisyear = ''.intval($year);
	} elseif ( !empty($w) ) {
		// We need to get the month from MySQL
		$thisyear = ''.intval(substr($m, 0, 4));
		$d = (($w - 1) * 7) + 6; //it seems MySQL's weeks disagree with PHP's
		$thismonth = $wpdb->get_var("SELECT DATE_FORMAT((DATE_ADD('{$thisyear}0101', INTERVAL $d DAY) ), '%m')");
	} elseif ( !empty($m) ) {
		$thisyear = ''.intval(substr($m, 0, 4));
		if ( strlen($m) < 6 )
				$thismonth = '01';
		else
				$thismonth = ''.zeroise(intval(substr($m, 4, 2)), 2);
	} else {
		$thisyear = gmdate('Y', current_time('timestamp'));
		$thismonth = gmdate('m', current_time('timestamp'));
	}

	$unixmonth = mktime(0, 0 , 0, $thismonth, 1, $thisyear);
	$last_day = date('t', $unixmonth);

	// Get the next and previous month and year with at least one post
	$previous = $wpdb->get_row("SELECT MONTH(post_date) AS month, YEAR(post_date) AS year
		FROM $wpdb->posts
		WHERE post_date < '$thisyear-$thismonth-01'
		AND post_type = 'post' AND post_status = 'publish'
			ORDER BY post_date DESC
			LIMIT 1");
	$next = $wpdb->get_row("SELECT MONTH(post_date) AS month, YEAR(post_date) AS year
		FROM $wpdb->posts
		WHERE post_date > '$thisyear-$thismonth-{$last_day} 23:59:59'
		AND post_type = 'post' AND post_status = 'publish'
			ORDER BY post_date ASC
			LIMIT 1");

	/* translators: Calendar caption: 1: month name, 2: 4-digit year */
	$calendar_caption = _x('%1$s %2$s', 'calendar caption');
	$calendar_output = '<table id="wp-calendar">
	<caption>' . sprintf($calendar_caption, $wp_locale->get_month($thismonth), date('Y', $unixmonth)) . '</caption>
	<thead>
	<tr>';

	$myweek = array();

	for ( $wdcount=0; $wdcount<=6; $wdcount++ ) {
		$myweek[] = $wp_locale->get_weekday(($wdcount+$week_begins)%7);
	}

	foreach ( $myweek as $wd ) {
		$day_name = $initial ? $wp_locale->get_weekday_initial($wd) : $wp_locale->get_weekday_abbrev($wd);
		$wd = esc_attr($wd);
		$calendar_output .= "\n\t\t<th scope=\"col\" title=\"$wd\">$day_name</th>";
	}

	$calendar_output .= '
	</tr>
	</thead>

	<tfoot>
	<tr>';

	if ( $previous ) {
		$calendar_output .= "\n\t\t".'<td colspan="3" id="prev"><a href="' . get_month_link($previous->year, $previous->month) . '">&laquo; ' . $wp_locale->get_month_abbrev($wp_locale->get_month($previous->month)) . '</a></td>';
	} else {
		$calendar_output .= "\n\t\t".'<td colspan="3" id="prev" class="pad">&nbsp;</td>';
	}

	$calendar_output .= "\n\t\t".'<td class="pad">&nbsp;</td>';

	if ( $next ) {
		$calendar_output .= "\n\t\t".'<td colspan="3" id="next"><a href="' . get_month_link($next->year, $next->month) . '">' . $wp_locale->get_month_abbrev($wp_locale->get_month($next->month)) . ' &raquo;</a></td>';
	} else {
		$calendar_output .= "\n\t\t".'<td colspan="3" id="next" class="pad">&nbsp;</td>';
	}

	$calendar_output .= '
	</tr>
	</tfoot>

	<tbody>
	<tr>';

	$daywithpost = array();

	// Get days with posts
	$dayswithposts = $wpdb->get_results("SELECT DISTINCT DAYOFMONTH(post_date)
		FROM $wpdb->posts WHERE post_date >= '{$thisyear}-{$thismonth}-01 00:00:00'
		AND post_type = 'post' AND post_status = 'publish'
		AND post_date <= '{$thisyear}-{$thismonth}-{$last_day} 23:59:59'", ARRAY_N);
	if ( $dayswithposts ) {
		foreach ( (array) $dayswithposts as $daywith ) {
			$daywithpost[] = $daywith[0];
		}
	}

	if (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false || stripos($_SERVER['HTTP_USER_AGENT'], 'camino') !== false || stripos($_SERVER['HTTP_USER_AGENT'], 'safari') !== false)
		$ak_title_separator = "\n";
	else
		$ak_title_separator = ', ';

	$ak_titles_for_day = array();
	$ak_post_titles = $wpdb->get_results("SELECT ID, post_title, DAYOFMONTH(post_date) as dom "
		."FROM $wpdb->posts "
		."WHERE post_date >= '{$thisyear}-{$thismonth}-01 00:00:00' "
		."AND post_date <= '{$thisyear}-{$thismonth}-{$last_day} 23:59:59' "
		."AND post_type = 'post' AND post_status = 'publish'"
	);
	if ( $ak_post_titles ) {
		foreach ( (array) $ak_post_titles as $ak_post_title ) {

				/** This filter is documented in wp-includes/post-template.php */
				$post_title = esc_attr( apply_filters( 'the_title', $ak_post_title->post_title, $ak_post_title->ID ) );

				if ( empty($ak_titles_for_day['day_'.$ak_post_title->dom]) )
					$ak_titles_for_day['day_'.$ak_post_title->dom] = '';
				if ( empty($ak_titles_for_day["$ak_post_title->dom"]) ) // first one
					$ak_titles_for_day["$ak_post_title->dom"] = $post_title;
				else
					$ak_titles_for_day["$ak_post_title->dom"] .= $ak_title_separator . $post_title;
		}
	}

	// See how much we should pad in the beginning
	$pad = calendar_week_mod(date('w', $unixmonth)-$week_begins);
	if ( 0 != $pad )
		$calendar_output .= "\n\t\t".'<td colspan="'. esc_attr($pad) .'" class="pad">&nbsp;</td>';

	$daysinmonth = intval(date('t', $unixmonth));
	for ( $day = 1; $day <= $daysinmonth; ++$day ) {
		if ( isset($newrow) && $newrow )
			$calendar_output .= "\n\t</tr>\n\t<tr>\n\t\t";
		$newrow = false;

		if ( $day == gmdate('j', current_time('timestamp')) && $thismonth == gmdate('m', current_time('timestamp')) && $thisyear == gmdate('Y', current_time('timestamp')) )
			$calendar_output .= '<td id="today">';
		else
			$calendar_output .= '<td>';

		if ( in_array($day, $daywithpost) ) // any posts today?
				$calendar_output .= '<a href="' . get_day_link( $thisyear, $thismonth, $day ) . '" title="' . esc_attr( $ak_titles_for_day[ $day ] ) . "\">$day</a>";
		else
			$calendar_output .= $day;
		$calendar_output .= '</td>';

		if ( 6 == calendar_week_mod(date('w', mktime(0, 0 , 0, $thismonth, $day, $thisyear))-$week_begins) )
			$newrow = true;
	}

	$pad = 7 - calendar_week_mod(date('w', mktime(0, 0 , 0, $thismonth, $day, $thisyear))-$week_begins);
	if ( $pad != 0 && $pad != 7 )
		$calendar_output .= "\n\t\t".'<td class="pad" colspan="'. esc_attr($pad) .'">&nbsp;</td>';

	$calendar_output .= "\n\t</tr>\n\t</tbody>\n\t</table>";

	$cache[ $key ] = $calendar_output;
	wp_cache_set( 'get_calendar', $cache, 'calendar' );

	if ( $echo ) {
		/**
		 * Filter the HTML calendar output.
		 *
		 * @since 3.0.0
		 *
		 * @param string $calendar_output HTML output of the calendar.
		 */
		echo apply_filters( 'get_calendar', $calendar_output );
	} else {
		/** This filter is documented in wp-includes/general-template.php */
		return apply_filters( 'get_calendar', $calendar_output );
	}

}

/**
 * Purge the cached results of get_calendar.
 *
 * @see get_calendar
 * @since 2.1.0
 */
function delete_get_calendar_cache() {
	wp_cache_delete( 'get_calendar', 'calendar' );
}

/**
 * Display all of the allowed tags in HTML format with attributes.
 *
 * This is useful for displaying in the comment area, which elements and
 * attributes are supported. As well as any plugins which want to display it.
 *
 * @since 1.0.1
 *
 * @global array $allowedtags
 *
 * @return string HTML allowed tags entity encoded.
 */
function allowed_tags() {
	global $allowedtags;
	$allowed = '';
	foreach ( (array) $allowedtags as $tag => $attributes ) {
		$allowed .= '<'.$tag;
		if ( 0 < count($attributes) ) {
			foreach ( $attributes as $attribute => $limits ) {
				$allowed .= ' '.$attribute.'=""';
			}
		}
		$allowed .= '> ';
	}
	return htmlentities( $allowed );
}

/***** Date/Time tags *****/

/**
 * Outputs the date in iso8601 format for xml files.
 *
 * @since 1.0.0
 */
function the_date_xml() {
	echo mysql2date( 'Y-m-d', get_post()->post_date, false );
}

/**
 * Display or Retrieve the date the current post was written (once per date)
 *
 * Will only output the date if the current post's date is different from the
 * previous one output.
 *
 * i.e. Only one date listing will show per day worth of posts shown in the loop, even if the
 * function is called several times for each post.
 *
 * HTML output can be filtered with 'the_date'.
 * Date string output can be filtered with 'get_the_date'.
 *
 * @since 0.71
 *
 * @global string|int|bool $currentday
 * @global string|int|bool $previousday
 *
 * @param string $d      Optional. PHP date format defaults to the date_format option if not specified.
 * @param string $before Optional. Output before the date.
 * @param string $after  Optional. Output after the date.
 * @param bool   $echo   Optional, default is display. Whether to echo the date or return it.
 * @return string|void String if retrieving.
 */
function the_date( $d = '', $before = '', $after = '', $echo = true ) {
	global $currentday, $previousday;

	if ( $currentday != $previousday ) {
		$the_date = $before . get_the_date( $d ) . $after;
		$previousday = $currentday;

		/**
		 * Filter the date a post was published for display.
		 *
		 * @since 0.71
		 *
		 * @param string $the_date The formatted date string.
		 * @param string $d        PHP date format. Defaults to 'date_format' option
		 *                         if not specified.
		 * @param string $before   HTML output before the date.
		 * @param string $after    HTML output after the date.
		 */
		$the_date = apply_filters( 'the_date', $the_date, $d, $before, $after );

		if ( $echo )
			echo $the_date;
		else
			return $the_date;
	}
}

/**
 * Retrieve the date on which the post was written.
 *
 * Unlike the_date() this function will always return the date.
 * Modify output with 'get_the_date' filter.
 *
 * @since 3.0.0
 *
 * @param  string      $d    Optional. PHP date format defaults to the date_format option if not specified.
 * @param  int|WP_Post $post Optional. Post ID or WP_Post object. Default current post.
 * @return false|string Date the current post was written. False on failure.
 */
function get_the_date( $d = '', $post = null ) {
	$post = get_post( $post );

	if ( ! $post ) {
		return false;
	}

	if ( '' == $d ) {
		$the_date = mysql2date( get_option( 'date_format' ), $post->post_date );
	} else {
		$the_date = mysql2date( $d, $post->post_date );
	}

	/**
	 * Filter the date a post was published.
	 *
	 * @since 3.0.0
	 *
	 * @param string      $the_date The formatted date.
	 * @param string      $d        PHP date format. Defaults to 'date_format' option
	 *                              if not specified.
	 * @param int|WP_Post $post     The post object or ID.
	 */
	return apply_filters( 'get_the_date', $the_date, $d, $post );
}

/**
 * Display the date on which the post was last modified.
 *
 * @since 2.1.0
 *
 * @param string $d      Optional. PHP date format defaults to the date_format option if not specified.
 * @param string $before Optional. Output before the date.
 * @param string $after  Optional. Output after the date.
 * @param bool   $echo   Optional, default is display. Whether to echo the date or return it.
 * @return string|void String if retrieving.
 */
function the_modified_date( $d = '', $before = '', $after = '', $echo = true ) {
	$the_modified_date = $before . get_the_modified_date($d) . $after;

	/**
	 * Filter the date a post was last modified for display.
	 *
	 * @since 2.1.0
	 *
	 * @param string $the_modified_date The last modified date.
	 * @param string $d                 PHP date format. Defaults to 'date_format' option
	 *                                  if not specified.
	 * @param string $before            HTML output before the date.
	 * @param string $after             HTML output after the date.
	 */
	$the_modified_date = apply_filters( 'the_modified_date', $the_modified_date, $d, $before, $after );

	if ( $echo )
		echo $the_modified_date;
	else
		return $the_modified_date;

}

/**
 * Retrieve the date on which the post was last modified.
 *
 * @since 2.1.0
 *
 * @param string $d Optional. PHP date format. Defaults to the "date_format" option
 * @return string
 */
function get_the_modified_date($d = '') {
	if ( '' == $d )
		$the_time = get_post_modified_time(get_option('date_format'), null, null, true);
	else
		$the_time = get_post_modified_time($d, null, null, true);

	/**
	 * Filter the date a post was last modified.
	 *
	 * @since 2.1.0
	 *
	 * @param string $the_time The formatted date.
	 * @param string $d        PHP date format. Defaults to value specified in
	 *                         'date_format' option.
	 */
	return apply_filters( 'get_the_modified_date', $the_time, $d );
}

/**
 * Display the time at which the post was written.
 *
 * @since 0.71
 *
 * @param string $d Either 'G', 'U', or php date format.
 */
function the_time( $d = '' ) {
	/**
	 * Filter the time a post was written for display.
	 *
	 * @since 0.71
	 *
	 * @param string $get_the_time The formatted time.
	 * @param string $d            The time format. Accepts 'G', 'U',
	 *                             or php date format.
	 */
	echo apply_filters( 'the_time', get_the_time( $d ), $d );
}

/**
 * Retrieve the time at which the post was written.
 *
 * @since 1.5.0
 *
 * @param string      $d    Optional. Format to use for retrieving the time the post
 *                          was written. Either 'G', 'U', or php date format defaults
 *                          to the value specified in the time_format option. Default empty.
 * @param int|WP_Post $post WP_Post object or ID. Default is global $post object.
 * @return false|string Formatted date string or Unix timestamp. False on failure.
 */
function get_the_time( $d = '', $post = null ) {
	$post = get_post($post);

	if ( ! $post ) {
		return false;
	}

	if ( '' == $d )
		$the_time = get_post_time(get_option('time_format'), false, $post, true);
	else
		$the_time = get_post_time($d, false, $post, true);

	/**
	 * Filter the time a post was written.
	 *
	 * @since 1.5.0
	 *
	 * @param string      $the_time The formatted time.
	 * @param string      $d        Format to use for retrieving the time the post was written.
	 *                              Accepts 'G', 'U', or php date format value specified
	 *                              in 'time_format' option. Default empty.
	 * @param int|WP_Post $post     WP_Post object or ID.
	 */
	return apply_filters( 'get_the_time', $the_time, $d, $post );
}

/**
 * Retrieve the time at which the post was written.
 *
 * @since 2.0.0
 *
 * @param string      $d         Optional. Format to use for retrieving the time the post
 *                               was written. Either 'G', 'U', or php date format. Default 'U'.
 * @param bool        $gmt       Optional. Whether to retrieve the GMT time. Default false.
 * @param int|WP_Post $post      WP_Post object or ID. Default is global $post object.
 * @param bool        $translate Whether to translate the time string. Default false.
 * @return false|string|int Formatted date string or Unix timestamp. False on failure.
 */
function get_post_time( $d = 'U', $gmt = false, $post = null, $translate = false ) {
	$post = get_post($post);

	if ( ! $post ) {
		return false;
	}

	if ( $gmt )
		$time = $post->post_date_gmt;
	else
		$time = $post->post_date;

	$time = mysql2date($d, $time, $translate);

	/**
	 * Filter the localized time a post was written.
	 *
	 * @since 2.6.0
	 *
	 * @param string $time The formatted time.
	 * @param string $d    Format to use for retrieving the time the post was written.
	 *                     Accepts 'G', 'U', or php date format. Default 'U'.
	 * @param bool   $gmt  Whether to retrieve the GMT time. Default false.
	 */
	return apply_filters( 'get_post_time', $time, $d, $gmt );
}

/**
 * Display the time at which the post was last modified.
 *
 * @since 2.0.0
 *
 * @param string $d Optional Either 'G', 'U', or php date format defaults to the value specified in the time_format option.
 */
function the_modified_time($d = '') {
	/**
	 * Filter the localized time a post was last modified, for display.
	 *
	 * @since 2.0.0
	 *
	 * @param string $get_the_modified_time The formatted time.
	 * @param string $d                     The time format. Accepts 'G', 'U',
	 *                                      or php date format. Defaults to value
	 *                                      specified in 'time_format' option.
	 */
	echo apply_filters( 'the_modified_time', get_the_modified_time($d), $d );
}

/**
 * Retrieve the time at which the post was last modified.
 *
 * @since 2.0.0
 *
 * @param string $d Optional Either 'G', 'U', or php date format defaults to the value specified in the time_format option.
 * @return string
 */
function get_the_modified_time($d = '') {
	if ( '' == $d )
		$the_time = get_post_modified_time(get_option('time_format'), null, null, true);
	else
		$the_time = get_post_modified_time($d, null, null, true);

	/**
	 * Filter the localized time a post was last modified.
	 *
	 * @since 2.0.0
	 *
	 * @param string $the_time The formatted time.
	 * @param string $d        Format to use for retrieving the time the post was
	 *                         written. Accepts 'G', 'U', or php date format. Defaults
	 *                         to value specified in 'time_format' option.
	 */
	return apply_filters( 'get_the_modified_time', $the_time, $d );
}

/**
 * Retrieve the time at which the post was last modified.
 *
 * @since 2.0.0
 *
 * @param string      $d         Optional. Format to use for retrieving the time the post
 *                               was modified. Either 'G', 'U', or php date format. Default 'U'.
 * @param bool        $gmt       Optional. Whether to retrieve the GMT time. Default false.
 * @param int|WP_Post $post      WP_Post object or ID. Default is global $post object.
 * @param bool        $translate Whether to translate the time string. Default false.
 * @return false|string Formatted date string or Unix timestamp. False on failure.
 */
function get_post_modified_time( $d = 'U', $gmt = false, $post = null, $translate = false ) {
	$post = get_post($post);

	if ( ! $post ) {
		return false;
	}

	if ( $gmt )
		$time = $post->post_modified_gmt;
	else
		$time = $post->post_modified;
	$time = mysql2date($d, $time, $translate);

	/**
	 * Filter the localized time a post was last modified.
	 *
	 * @since 2.8.0
	 *
	 * @param string $time The formatted time.
	 * @param string $d    The date format. Accepts 'G', 'U', or php date format. Default 'U'.
	 * @param bool   $gmt  Whether to return the GMT time. Default false.
	 */
	return apply_filters( 'get_post_modified_time', $time, $d, $gmt );
}

/**
 * Display the weekday on which the post was written.
 *
 * @since 0.71
 *
 * @global WP_Locale $wp_locale
 */
function the_weekday() {
	global $wp_locale;
	$the_weekday = $wp_locale->get_weekday( mysql2date( 'w', get_post()->post_date, false ) );

	/**
	 * Filter the weekday on which the post was written, for display.
	 *
	 * @since 0.71
	 *
	 * @param string $the_weekday
	 */
	echo apply_filters( 'the_weekday', $the_weekday );
}

/**
 * Display the weekday on which the post was written.
 *
 * Will only output the weekday if the current post's weekday is different from
 * the previous one output.
 *
 * @since 0.71
 *
 * @global WP_Locale       $wp_locale
 * @global string|int|bool $currentday
 * @global string|int|bool $previousweekday
 *
 * @param string $before Optional Output before the date.
 * @param string $after Optional Output after the date.
 */
function the_weekday_date($before='',$after='') {
	global $wp_locale, $currentday, $previousweekday;
	$the_weekday_date = '';
	if ( $currentday != $previousweekday ) {
		$the_weekday_date .= $before;
		$the_weekday_date .= $wp_locale->get_weekday( mysql2date( 'w', get_post()->post_date, false ) );
		$the_weekday_date .= $after;
		$previousweekday = $currentday;
	}

	/**
	 * Filter the localized date on which the post was written, for display.
	 *
	 * @since 0.71
	 *
	 * @param string $the_weekday_date
	 * @param string $before           The HTML to output before the date.
	 * @param string $after            The HTML to output after the date.
	 */
	$the_weekday_date = apply_filters( 'the_weekday_date', $the_weekday_date, $before, $after );
	echo $the_weekday_date;
}

/**
 * Fire the wp_head action
 *
 * @since 1.2.0
 */
function wp_head() {
	/**
	 * Print scripts or data in the head tag on the front end.
	 *
	 * @since 1.5.0
	 */
	do_action( 'wp_head' );
}

/**
 * Fire the wp_footer action
 *
 * @since 1.5.1
 */
function wp_footer() {
	/**
	 * Print scripts or data before the closing body tag on the front end.
	 *
	 * @since 1.5.1
	 */
	do_action( 'wp_footer' );
}

/**
 * Display the links to the general feeds.
 *
 * @since 2.8.0
 *
 * @param array $args Optional arguments.
 */
function feed_links( $args = array() ) {
	if ( !current_theme_supports('automatic-feed-links') )
		return;

	$defaults = array(
		/* translators: Separator between blog name and feed type in feed links */
		'separator'	=> _x('&raquo;', 'feed link'),
		/* translators: 1: blog title, 2: separator (raquo) */
		'feedtitle'	=> __('%1$s %2$s Feed'),
		/* translators: 1: blog title, 2: separator (raquo) */
		'comstitle'	=> __('%1$s %2$s Comments Feed'),
	);

	$args = wp_parse_args( $args, $defaults );

	echo '<link rel="alternate" type="' . feed_content_type() . '" title="' . esc_attr( sprintf( $args['feedtitle'], get_bloginfo('name'), $args['separator'] ) ) . '" href="' . esc_url( get_feed_link() ) . "\" />\n";
	echo '<link rel="alternate" type="' . feed_content_type() . '" title="' . esc_attr( sprintf( $args['comstitle'], get_bloginfo('name'), $args['separator'] ) ) . '" href="' . esc_url( get_feed_link( 'comments_' . get_default_feed() ) ) . "\" />\n";
}

/**
 * Display the links to the extra feeds such as category feeds.
 *
 * @since 2.8.0
 *
 * @param array $args Optional arguments.
 */
function feed_links_extra( $args = array() ) {
	$defaults = array(
		/* translators: Separator between blog name and feed type in feed links */
		'separator'   => _x('&raquo;', 'feed link'),
		/* translators: 1: blog name, 2: separator(raquo), 3: post title */
		'singletitle' => __('%1$s %2$s %3$s Comments Feed'),
		/* translators: 1: blog name, 2: separator(raquo), 3: category name */
		'cattitle'    => __('%1$s %2$s %3$s Category Feed'),
		/* translators: 1: blog name, 2: separator(raquo), 3: tag name */
		'tagtitle'    => __('%1$s %2$s %3$s Tag Feed'),
		/* translators: 1: blog name, 2: separator(raquo), 3: author name  */
		'authortitle' => __('%1$s %2$s Posts by %3$s Feed'),
		/* translators: 1: blog name, 2: separator(raquo), 3: search phrase */
		'searchtitle' => __('%1$s %2$s Search Results for &#8220;%3$s&#8221; Feed'),
		/* translators: 1: blog name, 2: separator(raquo), 3: post type name */
		'posttypetitle' => __('%1$s %2$s %3$s Feed'),
	);

	$args = wp_parse_args( $args, $defaults );

	if ( is_singular() ) {
		$id = 0;
		$post = get_post( $id );

		if ( comments_open() || pings_open() || $post->comment_count > 0 ) {
			$title = sprintf( $args['singletitle'], get_bloginfo('name'), $args['separator'], the_title_attribute( array( 'echo' => false ) ) );
			$href = get_post_comments_feed_link( $post->ID );
		}
	} elseif ( is_post_type_archive() ) {
		$post_type = get_query_var( 'post_type' );
		if ( is_array( $post_type ) )
			$post_type = reset( $post_type );

		$post_type_obj = get_post_type_object( $post_type );
		$title = sprintf( $args['posttypetitle'], get_bloginfo( 'name' ), $args['separator'], $post_type_obj->labels->name );
		$href = get_post_type_archive_feed_link( $post_type_obj->name );
	} elseif ( is_category() ) {
		$term = get_queried_object();

		if ( $term ) {
			$title = sprintf( $args['cattitle'], get_bloginfo('name'), $args['separator'], $term->name );
			$href = get_category_feed_link( $term->term_id );
		}
	} elseif ( is_tag() ) {
		$term = get_queried_object();

		if ( $term ) {
			$title = sprintf( $args['tagtitle'], get_bloginfo('name'), $args['separator'], $term->name );
			$href = get_tag_feed_link( $term->term_id );
		}
	} elseif ( is_author() ) {
		$author_id = intval( get_query_var('author') );

		$title = sprintf( $args['authortitle'], get_bloginfo('name'), $args['separator'], get_the_author_meta( 'display_name', $author_id ) );
		$href = get_author_feed_link( $author_id );
	} elseif ( is_search() ) {
		$title = sprintf( $args['searchtitle'], get_bloginfo('name'), $args['separator'], get_search_query( false ) );
		$href = get_search_feed_link();
	} elseif ( is_post_type_archive() ) {
		$title = sprintf( $args['posttypetitle'], get_bloginfo('name'), $args['separator'], post_type_archive_title( '', false ) );
		$post_type_obj = get_queried_object();
		if ( $post_type_obj )
			$href = get_post_type_archive_feed_link( $post_type_obj->name );
	}

	if ( isset($title) && isset($href) )
		echo '<link rel="alternate" type="' . feed_content_type() . '" title="' . esc_attr( $title ) . '" href="' . esc_url( $href ) . '" />' . "\n";
}

/**
 * Display the link to the Really Simple Discovery service endpoint.
 *
 * @link http://archipelago.phrasewise.com/rsd
 * @since 2.0.0
 */
function rsd_link() {
	echo '<link rel="EditURI" type="application/rsd+xml" title="RSD" href="' . get_bloginfo('wpurl') . "/xmlrpc.php?rsd\" />\n";
}

/**
 * Display the link to the Windows Live Writer manifest file.
 *
 * @link http://msdn.microsoft.com/en-us/library/bb463265.aspx
 * @since 2.3.1
 */
function wlwmanifest_link() {
	echo '<link rel="wlwmanifest" type="application/wlwmanifest+xml" href="',
		includes_url( 'wlwmanifest.xml' ), '" /> ', "\n";
}

/**
 * Display a noindex meta tag if required by the blog configuration.
 *
 * If a blog is marked as not being public then the noindex meta tag will be
 * output to tell web robots not to index the page content. Add this to the wp_head action.
 * Typical usage is as a wp_head callback. add_action( 'wp_head', 'noindex' );
 *
 * @see wp_no_robots
 *
 * @since 2.1.0
 */
function noindex() {
	// If the blog is not public, tell robots to go away.
	if ( '0' == get_option('blog_public') )
		wp_no_robots();
}

/**
 * Display a noindex meta tag.
 *
 * Outputs a noindex meta tag that tells web robots not to index the page content.
 * Typical usage is as a wp_head callback. add_action( 'wp_head', 'wp_no_robots' );
 *
 * @since 3.3.0
 */
function wp_no_robots() {
	echo "<meta name='robots' content='noindex,follow' />\n";
}

/**
 * Display site icon meta tags.
 *
 * @since 4.3.0
 *
 * @link http://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#rel-icon HTML5 specification link icon.
 */
function wp_site_icon() {
	if ( ! has_site_icon() && ! is_customize_preview() ) {
		return;
	}

	$meta_tags = array(
		sprintf( '<link rel="icon" href="%s" sizes="32x32" />', esc_url( get_site_icon_url( 32 ) ) ),
		sprintf( '<link rel="icon" href="%s" sizes="192x192" />', esc_url( get_site_icon_url( 192 ) ) ),
		sprintf( '<link rel="apple-touch-icon-precomposed" href="%s">', esc_url( get_site_icon_url( 180 ) ) ),
		sprintf( '<meta name="msapplication-TileImage" content="%s">', esc_url( get_site_icon_url( 270 ) ) ),
	);

	/**
	 * Filter the site icon meta tags, so Plugins can add their own.
	 *
	 * @since 4.3.0
	 *
	 * @param array $meta_tags Site Icon meta elements.
	 */
	$meta_tags = apply_filters( 'site_icon_meta_tags', $meta_tags );
	$meta_tags = array_filter( $meta_tags );

	foreach ( $meta_tags as $meta_tag ) {
		echo "$meta_tag\n";
	}
}

/**
 * Whether the user should have a WYSIWIG editor.
 *
 * Checks that the user requires a WYSIWIG editor and that the editor is
 * supported in the users browser.
 *
 * @since 2.0.0
 *
 * @global bool $wp_rich_edit
 * @global bool $is_gecko
 * @global bool $is_opera
 * @global bool $is_safari
 * @global bool $is_chrome
 * @global bool $is_IE
 *
 * @return bool
 */
function user_can_richedit() {
	global $wp_rich_edit, $is_gecko, $is_opera, $is_safari, $is_chrome, $is_IE;

	if ( !isset($wp_rich_edit) ) {
		$wp_rich_edit = false;

		if ( get_user_option( 'rich_editing' ) == 'true' || ! is_user_logged_in() ) { // default to 'true' for logged out users
			if ( $is_safari ) {
				$wp_rich_edit = ! wp_is_mobile() || ( preg_match( '!AppleWebKit/(\d+)!', $_SERVER['HTTP_USER_AGENT'], $match ) && intval( $match[1] ) >= 534 );
			} elseif ( $is_gecko || $is_chrome || $is_IE || ( $is_opera && !wp_is_mobile() ) ) {
				$wp_rich_edit = true;
			}
		}
	}

	/**
	 * Filter whether the user can access the rich (Visual) editor.
	 *
	 * @since 2.1.0
	 *
	 * @param bool $wp_rich_edit Whether the user can access to the rich (Visual) editor.
	 */
	return apply_filters( 'user_can_richedit', $wp_rich_edit );
}

/**
 * Find out which editor should be displayed by default.
 *
 * Works out which of the two editors to display as the current editor for a
 * user. The 'html' setting is for the "Text" editor tab.
 *
 * @since 2.5.0
 *
 * @return string Either 'tinymce', or 'html', or 'test'
 */
function wp_default_editor() {
	$r = user_can_richedit() ? 'tinymce' : 'html'; // defaults
	if ( wp_get_current_user() ) { // look for cookie
		$ed = get_user_setting('editor', 'tinymce');
		$r = ( in_array($ed, array('tinymce', 'html', 'test') ) ) ? $ed : $r;
	}

	/**
	 * Filter which editor should be displayed by default.
	 *
	 * @since 2.5.0
	 *
	 * @param array $r An array of editors. Accepts 'tinymce', 'html', 'test'.
	 */
	return apply_filters( 'wp_default_editor', $r );
}

/**
 * Renders an editor.
 *
 * Using this function is the proper way to output all needed components for both TinyMCE and Quicktags.
 * _WP_Editors should not be used directly. See https://core.trac.wordpress.org/ticket/17144.
 *
 * NOTE: Once initialized the TinyMCE editor cannot be safely moved in the DOM. For that reason
 * running wp_editor() inside of a metabox is not a good idea unless only Quicktags is used.
 * On the post edit screen several actions can be used to include additional editors
 * containing TinyMCE: 'edit_page_form', 'edit_form_advanced' and 'dbx_post_sidebar'.
 * See https://core.trac.wordpress.org/ticket/19173 for more information.
 *
 * @see wp-includes/class-wp-editor.php
 * @since 3.3.0
 *
 * @param string $content   Initial content for the editor.
 * @param string $editor_id HTML ID attribute value for the textarea and TinyMCE. Can only be /[a-z]+/.
 * @param array  $settings  See _WP_Editors::editor().
 */
function wp_editor( $content, $editor_id, $settings = array() ) {
	if ( ! class_exists( '_WP_Editors' ) )
		require( ABSPATH . WPINC . '/class-wp-editor.php' );

	_WP_Editors::editor($content, $editor_id, $settings);
}

/**
 * Retrieve the contents of the search WordPress query variable.
 *
 * The search query string is passed through {@link esc_attr()}
 * to ensure that it is safe for placing in an html attribute.
 *
 * @since 2.3.0
 *
 * @param bool $escaped Whether the result is escaped. Default true.
 * 	                    Only use when you are later escaping it. Do not use unescaped.
 * @return string
 */
function get_search_query( $escaped = true ) {
	/**
	 * Filter the contents of the search query variable.
	 *
	 * @since 2.3.0
	 *
	 * @param mixed $search Contents of the search query variable.
	 */
	$query = apply_filters( 'get_search_query', get_query_var( 's' ) );

	if ( $escaped )
		$query = esc_attr( $query );
	return $query;
}

/**
 * Display the contents of the search query variable.
 *
 * The search query string is passed through {@link esc_attr()}
 * to ensure that it is safe for placing in an html attribute.
 *
 * @since 2.1.0
 */
function the_search_query() {
	/**
	 * Filter the contents of the search query variable for display.
	 *
	 * @since 2.3.0
	 *
	 * @param mixed $search Contents of the search query variable.
	 */
	echo esc_attr( apply_filters( 'the_search_query', get_search_query( false ) ) );
}

/**
 * Gets the language attributes for the html tag.
 *
 * Builds up a set of html attributes containing the text direction and language
 * information for the page.
 *
 * @since 4.3.0
 *
 * @param string $doctype Optional. The type of html document. Accepts 'xhtml' or 'html'. Default 'html'.
 */
function get_language_attributes( $doctype = 'html' ) {
	$attributes = array();

	if ( function_exists( 'is_rtl' ) && is_rtl() )
		$attributes[] = 'dir="rtl"';

	if ( $lang = get_bloginfo('language') ) {
		if ( get_option('html_type') == 'text/html' || $doctype == 'html' )
			$attributes[] = "lang=\"$lang\"";

		if ( get_option('html_type') != 'text/html' || $doctype == 'xhtml' )
			$attributes[] = "xml:lang=\"$lang\"";
	}

	$output = implode(' ', $attributes);

	/**
	 * Filter the language attributes for display in the html tag.
	 *
	 * @since 2.5.0
	 * @since 4.3.0 Added the `$doctype` parameter.
	 *
	 * @param string $output A space-separated list of language attributes.
	 * @param string $doctype The type of html document (xhtml|html).
	 */
	return apply_filters( 'language_attributes', $output, $doctype );
}

/**
 * Displays the language attributes for the html tag.
 *
 * Builds up a set of html attributes containing the text direction and language
 * information for the page.
 *
 * @since 2.1.0
 * @since 4.3.0 Converted into a wrapper for get_language_attributes().
 *
 * @param string $doctype Optional. The type of html document. Accepts 'xhtml' or 'html'. Default 'html'.
 */
function language_attributes( $doctype = 'html' ) {
	echo get_language_attributes( $doctype );
}

/**
 * Retrieve paginated link for archive post pages.
 *
 * Technically, the function can be used to create paginated link list for any
 * area. The 'base' argument is used to reference the url, which will be used to
 * create the paginated links. The 'format' argument is then used for replacing
 * the page number. It is however, most likely and by default, to be used on the
 * archive post pages.
 *
 * The 'type' argument controls format of the returned value. The default is
 * 'plain', which is just a string with the links separated by a newline
 * character. The other possible values are either 'array' or 'list'. The
 * 'array' value will return an array of the paginated link list to offer full
 * control of display. The 'list' value will place all of the paginated links in
 * an unordered HTML list.
 *
 * The 'total' argument is the total amount of pages and is an integer. The
 * 'current' argument is the current page number and is also an integer.
 *
 * An example of the 'base' argument is "http://example.com/all_posts.php%_%"
 * and the '%_%' is required. The '%_%' will be replaced by the contents of in
 * the 'format' argument. An example for the 'format' argument is "?page=%#%"
 * and the '%#%' is also required. The '%#%' will be replaced with the page
 * number.
 *
 * You can include the previous and next links in the list by setting the
 * 'prev_next' argument to true, which it is by default. You can set the
 * previous text, by using the 'prev_text' argument. You can set the next text
 * by setting the 'next_text' argument.
 *
 * If the 'show_all' argument is set to true, then it will show all of the pages
 * instead of a short list of the pages near the current page. By default, the
 * 'show_all' is set to false and controlled by the 'end_size' and 'mid_size'
 * arguments. The 'end_size' argument is how many numbers on either the start
 * and the end list edges, by default is 1. The 'mid_size' argument is how many
 * numbers to either side of current page, but not including current page.
 *
 * It is possible to add query vars to the link by using the 'add_args' argument
 * and see {@link add_query_arg()} for more information.
 *
 * The 'before_page_number' and 'after_page_number' arguments allow users to
 * augment the links themselves. Typically this might be to add context to the
 * numbered links so that screen reader users understand what the links are for.
 * The text strings are added before and after the page number - within the
 * anchor tag.
 *
 * @since 2.1.0
 *
 * @global WP_Query   $wp_query
 * @global WP_Rewrite $wp_rewrite
 *
 * @param string|array $args {
 *     Optional. Array or string of arguments for generating paginated links for archives.
 *
 *     @type string $base               Base of the paginated url. Default empty.
 *     @type string $format             Format for the pagination structure. Default empty.
 *     @type int    $total              The total amount of pages. Default is the value WP_Query's
 *                                      `max_num_pages` or 1.
 *     @type int    $current            The current page number. Default is 'paged' query var or 1.
 *     @type bool   $show_all           Whether to show all pages. Default false.
 *     @type int    $end_size           How many numbers on either the start and the end list edges.
 *                                      Default 1.
 *     @type int    $mid_size           How many numbers to either side of the current pages. Default 2.
 *     @type bool   $prev_next          Whether to include the previous and next links in the list. Default true.
 *     @type bool   $prev_text          The previous page text. Default 'ÂŤ Previous'.
 *     @type bool   $next_text          The next page text. Default 'ÂŤ Previous'.
 *     @type string $type               Controls format of the returned value. Possible values are 'plain',
 *                                      'array' and 'list'. Default is 'plain'.
 *     @type array  $add_args           An array of query args to add. Default false.
 *     @type string $add_fragment       A string to append to each link. Default empty.
 *     @type string $before_page_number A string to appear before the page number. Default empty.
 *     @type string $after_page_number  A string to append after the page number. Default empty.
 * }
 * @return array|string|void String of page links or array of page links.
 */
function paginate_links( $args = '' ) {
	global $wp_query, $wp_rewrite;

	// Setting up default values based on the current URL.
	$pagenum_link = html_entity_decode( get_pagenum_link() );
	$url_parts    = explode( '?', $pagenum_link );

	// Get max pages and current page out of the current query, if available.
	$total   = isset( $wp_query->max_num_pages ) ? $wp_query->max_num_pages : 1;
	$current = get_query_var( 'paged' ) ? intval( get_query_var( 'paged' ) ) : 1;

	// Append the format placeholder to the base URL.
	$pagenum_link = trailingslashit( $url_parts[0] ) . '%_%';

	// URL base depends on permalink settings.
	$format  = $wp_rewrite->using_index_permalinks() && ! strpos( $pagenum_link, 'index.php' ) ? 'index.php/' : '';
	$format .= $wp_rewrite->using_permalinks() ? user_trailingslashit( $wp_rewrite->pagination_base . '/%#%', 'paged' ) : '?paged=%#%';

	$defaults = array(
		'base' => $pagenum_link, // http://example.com/all_posts.php%_% : %_% is replaced by format (below)
		'format' => $format, // ?page=%#% : %#% is replaced by the page number
		'total' => $total,
		'current' => $current,
		'show_all' => false,
		'prev_next' => true,
		'prev_text' => __('&laquo; Previous'),
		'next_text' => __('Next &raquo;'),
		'end_size' => 1,
		'mid_size' => 2,
		'type' => 'plain',
		'add_args' => array(), // array of query args to add
		'add_fragment' => '',
		'before_page_number' => '',
		'after_page_number' => ''
	);

	$args = wp_parse_args( $args, $defaults );

	if ( ! is_array( $args['add_args'] ) ) {
		$args['add_args'] = array();
	}

	// Merge additional query vars found in the original URL into 'add_args' array.
	if ( isset( $url_parts[1] ) ) {
		// Find the format argument.
		$format = explode( '?', str_replace( '%_%', $args['format'], $args['base'] ) );
		$format_query = isset( $format[1] ) ? $format[1] : '';
		wp_parse_str( $format_query, $format_args );

		// Find the query args of the requested URL.
		wp_parse_str( $url_parts[1], $url_query_args );

		// Remove the format argument from the array of query arguments, to avoid overwriting custom format.
		foreach ( $format_args as $format_arg => $format_arg_value ) {
			unset( $url_query_args[ $format_arg ] );
		}

		$args['add_args'] = array_merge( $args['add_args'], urlencode_deep( $url_query_args ) );
	}

	// Who knows what else people pass in $args
	$total = (int) $args['total'];
	if ( $total < 2 ) {
		return;
	}
	$current  = (int) $args['current'];
	$end_size = (int) $args['end_size']; // Out of bounds?  Make it the default.
	if ( $end_size < 1 ) {
		$end_size = 1;
	}
	$mid_size = (int) $args['mid_size'];
	if ( $mid_size < 0 ) {
		$mid_size = 2;
	}
	$add_args = $args['add_args'];
	$r = '';
	$page_links = array();
	$dots = false;

	if ( $args['prev_next'] && $current && 1 < $current ) :
		$link = str_replace( '%_%', 2 == $current ? '' : $args['format'], $args['base'] );
		$link = str_replace( '%#%', $current - 1, $link );
		if ( $add_args )
			$link = add_query_arg( $add_args, $link );
		$link .= $args['add_fragment'];

		/**
		 * Filter the paginated links for the given archive pages.
		 *
		 * @since 3.0.0
		 *
		 * @param string $link The paginated link URL.
		 */
		$page_links[] = '<a class="prev page-numbers" href="' . esc_url( apply_filters( 'paginate_links', $link ) ) . '">' . $args['prev_text'] . '</a>';
	endif;
	for ( $n = 1; $n <= $total; $n++ ) :
		if ( $n == $current ) :
			$page_links[] = "<span class='page-numbers current'>" . $args['before_page_number'] . number_format_i18n( $n ) . $args['after_page_number'] . "</span>";
			$dots = true;
		else :
			if ( $args['show_all'] || ( $n <= $end_size || ( $current && $n >= $current - $mid_size && $n <= $current + $mid_size ) || $n > $total - $end_size ) ) :
				$link = str_replace( '%_%', 1 == $n ? '' : $args['format'], $args['base'] );
				$link = str_replace( '%#%', $n, $link );
				if ( $add_args )
					$link = add_query_arg( $add_args, $link );
				$link .= $args['add_fragment'];

				/** This filter is documented in wp-includes/general-template.php */
				$page_links[] = "<a class='page-numbers' href='" . esc_url( apply_filters( 'paginate_links', $link ) ) . "'>" . $args['before_page_number'] . number_format_i18n( $n ) . $args['after_page_number'] . "</a>";
				$dots = true;
			elseif ( $dots && ! $args['show_all'] ) :
				$page_links[] = '<span class="page-numbers dots">' . __( '&hellip;' ) . '</span>';
				$dots = false;
			endif;
		endif;
	endfor;
	if ( $args['prev_next'] && $current && ( $current < $total || -1 == $total ) ) :
		$link = str_replace( '%_%', $args['format'], $args['base'] );
		$link = str_replace( '%#%', $current + 1, $link );
		if ( $add_args )
			$link = add_query_arg( $add_args, $link );
		$link .= $args['add_fragment'];

		/** This filter is documented in wp-includes/general-template.php */
		$page_links[] = '<a class="next page-numbers" href="' . esc_url( apply_filters( 'paginate_links', $link ) ) . '">' . $args['next_text'] . '</a>';
	endif;
	switch ( $args['type'] ) {
		case 'array' :
			return $page_links;

		case 'list' :
			$r .= "<ul class='page-numbers'>\n\t<li>";
			$r .= join("</li>\n\t<li>", $page_links);
			$r .= "</li>\n</ul>\n";
			break;

		default :
			$r = join("\n", $page_links);
			break;
	}
	return $r;
}

/**
 * Registers an admin colour scheme css file.
 *
 * Allows a plugin to register a new admin colour scheme. For example:
 *
 *     wp_admin_css_color( 'classic', __( 'Classic' ), admin_url( "css/colors-classic.css" ), array(
 *         '#07273E', '#14568A', '#D54E21', '#2683AE'
 *     ) );
 *
 * @since 2.5.0
 *
 * @todo Properly document optional arguments as such
 *
 * @global array $_wp_admin_css_colors
 *
 * @param string $key    The unique key for this theme.
 * @param string $name   The name of the theme.
 * @param string $url    The url of the css file containing the colour scheme.
 * @param array  $colors Optional An array of CSS color definitions which are used to give the user a feel for the theme.
 * @param array  $icons  Optional An array of CSS color definitions used to color any SVG icons
 */
function wp_admin_css_color( $key, $name, $url, $colors = array(), $icons = array() ) {
	global $_wp_admin_css_colors;

	if ( !isset($_wp_admin_css_colors) )
		$_wp_admin_css_colors = array();

	$_wp_admin_css_colors[$key] = (object) array(
		'name' => $name,
		'url' => $url,
		'colors' => $colors,
		'icon_colors' => $icons,
	);
}

/**
 * Registers the default Admin color schemes
 *
 * @since 3.0.0
 *
 * @global string $wp_version
 */
function register_admin_color_schemes() {
	$suffix = is_rtl() ? '-rtl' : '';
	$suffix .= SCRIPT_DEBUG ? '' : '.min';

	wp_admin_css_color( 'fresh', _x( 'Default', 'admin color scheme' ),
		false,
		array( '#222', '#333', '#0073aa', '#00a0d2' ),
		array( 'base' => '#999', 'focus' => '#00a0d2', 'current' => '#fff' )
	);

	// Other color schemes are not available when running out of src
	if ( false !== strpos( $GLOBALS['wp_version'], '-src' ) )
		return;

	wp_admin_css_color( 'light', _x( 'Light', 'admin color scheme' ),
		admin_url( "css/colors/light/colors$suffix.css" ),
		array( '#e5e5e5', '#999', '#d64e07', '#04a4cc' ),
		array( 'base' => '#999', 'focus' => '#ccc', 'current' => '#ccc' )
	);

	wp_admin_css_color( 'blue', _x( 'Blue', 'admin color scheme' ),
		admin_url( "css/colors/blue/colors$suffix.css" ),
		array( '#096484', '#4796b3', '#52accc', '#74B6CE' ),
		array( 'base' => '#e5f8ff', 'focus' => '#fff', 'current' => '#fff' )
	);

	wp_admin_css_color( 'midnight', _x( 'Midnight', 'admin color scheme' ),
		admin_url( "css/colors/midnight/colors$suffix.css" ),
		array( '#25282b', '#363b3f', '#69a8bb', '#e14d43' ),
		array( 'base' => '#f1f2f3', 'focus' => '#fff', 'current' => '#fff' )
	);

	wp_admin_css_color( 'sunrise', _x( 'Sunrise', 'admin color scheme' ),
		admin_url( "css/colors/sunrise/colors$suffix.css" ),
		array( '#b43c38', '#cf4944', '#dd823b', '#ccaf0b' ),
		array( 'base' => '#f3f1f1', 'focus' => '#fff', 'current' => '#fff' )
	);

	wp_admin_css_color( 'ectoplasm', _x( 'Ectoplasm', 'admin color scheme' ),
		admin_url( "css/colors/ectoplasm/colors$suffix.css" ),
		array( '#413256', '#523f6d', '#a3b745', '#d46f15' ),
		array( 'base' => '#ece6f6', 'focus' => '#fff', 'current' => '#fff' )
	);

	wp_admin_css_color( 'ocean', _x( 'Ocean', 'admin color scheme' ),
		admin_url( "css/colors/ocean/colors$suffix.css" ),
		array( '#627c83', '#738e96', '#9ebaa0', '#aa9d88' ),
		array( 'base' => '#f2fcff', 'focus' => '#fff', 'current' => '#fff' )
	);

	wp_admin_css_color( 'coffee', _x( 'Coffee', 'admin color scheme' ),
		admin_url( "css/colors/coffee/colors$suffix.css" ),
		array( '#46403c', '#59524c', '#c7a589', '#9ea476' ),
		array( 'base' => '#f3f2f1', 'focus' => '#fff', 'current' => '#fff' )
	);

}

/**
 * Display the URL of a WordPress admin CSS file.
 *
 * @see WP_Styles::_css_href and its style_loader_src filter.
 *
 * @since 2.3.0
 *
 * @param string $file file relative to wp-admin/ without its ".css" extension.
 * @return string
 */
function wp_admin_css_uri( $file = 'wp-admin' ) {
	if ( defined('WP_INSTALLING') ) {
		$_file = "./$file.css";
	} else {
		$_file = admin_url("$file.css");
	}
	$_file = add_query_arg( 'version', get_bloginfo( 'version' ),  $_file );

	/**
	 * Filter the URI of a WordPress admin CSS file.
	 *
	 * @since 2.3.0
	 *
	 * @param string $_file Relative path to the file with query arguments attached.
	 * @param string $file  Relative path to the file, minus its ".css" extension.
	 */
	return apply_filters( 'wp_admin_css_uri', $_file, $file );
}

/**
 * Enqueues or directly prints a stylesheet link to the specified CSS file.
 *
 * "Intelligently" decides to enqueue or to print the CSS file. If the
 * 'wp_print_styles' action has *not* yet been called, the CSS file will be
 * enqueued. If the wp_print_styles action *has* been called, the CSS link will
 * be printed. Printing may be forced by passing true as the $force_echo
 * (second) parameter.
 *
 * For backward compatibility with WordPress 2.3 calling method: If the $file
 * (first) parameter does not correspond to a registered CSS file, we assume
 * $file is a file relative to wp-admin/ without its ".css" extension. A
 * stylesheet link to that generated URL is printed.
 *
 * @since 2.3.0
 *
 * @param string $file       Optional. Style handle name or file name (without ".css" extension) relative
 * 	                         to wp-admin/. Defaults to 'wp-admin'.
 * @param bool   $force_echo Optional. Force the stylesheet link to be printed rather than enqueued.
 */
function wp_admin_css( $file = 'wp-admin', $force_echo = false ) {
	// For backward compatibility
	$handle = 0 === strpos( $file, 'css/' ) ? substr( $file, 4 ) : $file;

	if ( wp_styles()->query( $handle ) ) {
		if ( $force_echo || did_action( 'wp_print_styles' ) ) // we already printed the style queue. Print this one immediately
			wp_print_styles( $handle );
		else // Add to style queue
			wp_enqueue_style( $handle );
		return;
	}

	/**
	 * Filter the stylesheet link to the specified CSS file.
	 *
	 * If the site is set to display right-to-left, the RTL stylesheet link
	 * will be used instead.
	 *
	 * @since 2.3.0
	 *
	 * @param string $file Style handle name or filename (without ".css" extension)
	 *                     relative to wp-admin/. Defaults to 'wp-admin'.
	 */
	echo apply_filters( 'wp_admin_css', "<link rel='stylesheet' href='" . esc_url( wp_admin_css_uri( $file ) ) . "' type='text/css' />\n", $file );

	if ( function_exists( 'is_rtl' ) && is_rtl() ) {
		/** This filter is documented in wp-includes/general-template.php */
		echo apply_filters( 'wp_admin_css', "<link rel='stylesheet' href='" . esc_url( wp_admin_css_uri( "$file-rtl" ) ) . "' type='text/css' />\n", "$file-rtl" );
	}
}

/**
 * Enqueues the default ThickBox js and css.
 *
 * If any of the settings need to be changed, this can be done with another js
 * file similar to media-upload.js. That file should
 * require array('thickbox') to ensure it is loaded after.
 *
 * @since 2.5.0
 */
function add_thickbox() {
	wp_enqueue_script( 'thickbox' );
	wp_enqueue_style( 'thickbox' );

	if ( is_network_admin() )
		add_action( 'admin_head', '_thickbox_path_admin_subfolder' );
}

/**
 * Display the XHTML generator that is generated on the wp_head hook.
 *
 * @since 2.5.0
 */
function wp_generator() {
	/**
	 * Filter the output of the XHTML generator tag.
	 *
	 * @since 2.5.0
	 *
	 * @param string $generator_type The XHTML generator.
	 */
	the_generator( apply_filters( 'wp_generator_type', 'xhtml' ) );
}

/**
 * Display the generator XML or Comment for RSS, ATOM, etc.
 *
 * Returns the correct generator type for the requested output format. Allows
 * for a plugin to filter generators overall the the_generator filter.
 *
 * @since 2.5.0
 *
 * @param string $type The type of generator to output - (html|xhtml|atom|rss2|rdf|comment|export).
 */
function the_generator( $type ) {
	/**
	 * Filter the output of the XHTML generator tag for display.
	 *
	 * @since 2.5.0
	 *
	 * @param string $generator_type The generator output.
	 * @param string $type           The type of generator to output. Accepts 'html',
	 *                               'xhtml', 'atom', 'rss2', 'rdf', 'comment', 'export'.
	 */
	echo apply_filters( 'the_generator', get_the_generator($type), $type ) . "\n";
}

/**
 * Creates the generator XML or Comment for RSS, ATOM, etc.
 *
 * Returns the correct generator type for the requested output format. Allows
 * for a plugin to filter generators on an individual basis using the
 * 'get_the_generator_{$type}' filter.
 *
 * @since 2.5.0
 *
 * @param string $type The type of generator to return - (html|xhtml|atom|rss2|rdf|comment|export).
 * @return string|void The HTML content for the generator.
 */
function get_the_generator( $type = '' ) {
	if ( empty( $type ) ) {

		$current_filter = current_filter();
		if ( empty( $current_filter ) )
			return;

		switch ( $current_filter ) {
			case 'rss2_head' :
			case 'commentsrss2_head' :
				$type = 'rss2';
				break;
			case 'rss_head' :
			case 'opml_head' :
				$type = 'comment';
				break;
			case 'rdf_header' :
				$type = 'rdf';
				break;
			case 'atom_head' :
			case 'comments_atom_head' :
			case 'app_head' :
				$type = 'atom';
				break;
		}
	}

	switch ( $type ) {
		case 'html':
			$gen = '<meta name="generator" content="WordPress ' . get_bloginfo( 'version' ) . '">';
			break;
		case 'xhtml':
			$gen = '<meta name="generator" content="WordPress ' . get_bloginfo( 'version' ) . '" />';
			break;
		case 'atom':
			$gen = '<generator uri="http://wordpress.org/" version="' . get_bloginfo_rss( 'version' ) . '">WordPress</generator>';
			break;
		case 'rss2':
			$gen = '<generator>http://wordpress.org/?v=' . get_bloginfo_rss( 'version' ) . '</generator>';
			break;
		case 'rdf':
			$gen = '<admin:generatorAgent rdf:resource="http://wordpress.org/?v=' . get_bloginfo_rss( 'version' ) . '" />';
			break;
		case 'comment':
			$gen = '<!-- generator="WordPress/' . get_bloginfo( 'version' ) . '" -->';
			break;
		case 'export':
			$gen = '<!-- generator="WordPress/' . get_bloginfo_rss('version') . '" created="'. date('Y-m-d H:i') . '" -->';
			break;
	}

	/**
	 * Filter the HTML for the retrieved generator type.
	 *
	 * The dynamic portion of the hook name, `$type`, refers to the generator type.
	 *
	 * @since 2.5.0
	 *
	 * @param string $gen  The HTML markup output to {@see wp_head()}.
	 * @param string $type The type of generator. Accepts 'html', 'xhtml', 'atom',
	 *                     'rss2', 'rdf', 'comment', 'export'.
	 */
	return apply_filters( "get_the_generator_{$type}", $gen, $type );
}

/**
 * Outputs the html checked attribute.
 *
 * Compares the first two arguments and if identical marks as checked
 *
 * @since 1.0.0
 *
 * @param mixed $checked One of the values to compare
 * @param mixed $current (true) The other value to compare if not just true
 * @param bool  $echo    Whether to echo or just return the string
 * @return string html attribute or empty string
 */
function checked( $checked, $current = true, $echo = true ) {
	return __checked_selected_helper( $checked, $current, $echo, 'checked' );
}

/**
 * Outputs the html selected attribute.
 *
 * Compares the first two arguments and if identical marks as selected
 *
 * @since 1.0.0
 *
 * @param mixed $selected One of the values to compare
 * @param mixed $current  (true) The other value to compare if not just true
 * @param bool  $echo     Whether to echo or just return the string
 * @return string html attribute or empty string
 */
function selected( $selected, $current = true, $echo = true ) {
	return __checked_selected_helper( $selected, $current, $echo, 'selected' );
}

/**
 * Outputs the html disabled attribute.
 *
 * Compares the first two arguments and if identical marks as disabled
 *
 * @since 3.0.0
 *
 * @param mixed $disabled One of the values to compare
 * @param mixed $current  (true) The other value to compare if not just true
 * @param bool  $echo     Whether to echo or just return the string
 * @return string html attribute or empty string
 */
function disabled( $disabled, $current = true, $echo = true ) {
	return __checked_selected_helper( $disabled, $current, $echo, 'disabled' );
}

/**
 * Private helper function for checked, selected, and disabled.
 *
 * Compares the first two arguments and if identical marks as $type
 *
 * @since 2.8.0
 * @access private
 *
 * @param mixed  $helper  One of the values to compare
 * @param mixed  $current (true) The other value to compare if not just true
 * @param bool   $echo    Whether to echo or just return the string
 * @param string $type    The type of checked|selected|disabled we are doing
 * @return string html attribute or empty string
 */
function __checked_selected_helper( $helper, $current, $echo, $type ) {
	if ( (string) $helper === (string) $current )
		$result = " $type='$type'";
	else
		$result = '';

	if ( $echo )
		echo $result;

	return $result;
}

/**
 * Default settings for heartbeat
 *
 * Outputs the nonce used in the heartbeat XHR
 *
 * @since 3.6.0
 *
 * @param array $settings
 * @return array $settings
 */
function wp_heartbeat_settings( $settings ) {
	if ( ! is_admin() )
		$settings['ajaxurl'] = admin_url( 'admin-ajax.php', 'relative' );

	if ( is_user_logged_in() )
		$settings['nonce'] = wp_create_nonce( 'heartbeat-nonce' );

	return $settings;
}
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