<?php

/**

 * WordPress Post Template Functions.

 *

 * Gets content for the current post in the loop.

 *

 * @package WordPress

 * @subpackage Template

 */

/**

 * Display the ID of the current item in the WordPress Loop.

 *

 * @since 0.71

 */

function the_ID() {

	echo get_the_ID();

}

/**

 * Retrieve the ID of the current item in the WordPress Loop.

 *

 * @since 2.1.0

 * @uses $post

 *

 * @return int

 */

function get_the_ID() {

	global $post;

	return $post->ID;

}

/**

 * Display or retrieve the current post title with optional content.

 *

 * @since 0.71

 *

 * @param string $before Optional. Content to prepend to the title.

 * @param string $after Optional. Content to append to the title.

 * @param bool $echo Optional, default to true.Whether to display or return.

 * @return null|string Null on no title. String if $echo parameter is false.

 */

function the_title($before = '', $after = '', $echo = true) {

	$title = get_the_title();

	if ( strlen($title) == 0 )

		return;

	$title = $before . $title . $after;

	if ( $echo )

		echo $title;

	else

		return $title;

}

/**

 * Sanitize the current title when retrieving or displaying.

 *

 * Works like {@link the_title()}, except the parameters can be in a string or

 * an array. See the function for what can be override in the $args parameter.

 *

 * The title before it is displayed will have the tags stripped and {@link

 * esc_attr()} before it is passed to the user or displayed. The default

 * as with {@link the_title()}, is to display the title.

 *

 * @since 2.3.0

 *

 * @param string|array $args Optional. Override the defaults.

 * @return string|null Null on failure or display. String when echo is false.

 */

function the_title_attribute( $args = '' ) {

	$title = get_the_title();

	if ( strlen($title) == 0 )

		return;

	$defaults = array('before' => '', 'after' =>  '', 'echo' => true);

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

	extract( $r, EXTR_SKIP );

	$title = $before . $title . $after;

	$title = esc_attr(strip_tags($title));

	if ( $echo )

		echo $title;

	else

		return $title;

}

/**

 * Retrieve post title.

 *

 * If the post is protected and the visitor is not an admin, then "Protected"

 * will be displayed before the post title. If the post is private, then

 * "Private" will be located before the post title.

 *

 * @since 0.71

 *

 * @param int $id Optional. Post ID.

 * @return string

 */

function get_the_title( $id = 0 ) {

	$post = &get_post($id);

	$title = isset($post->post_title) ? $post->post_title : '';

	$id = isset($post->ID) ? $post->ID : (int) $id;

	if ( !is_admin() ) {

		if ( !empty($post->post_password) ) {

			$protected_title_format = apply_filters('protected_title_format', __('Protected: %s'));

			$title = sprintf($protected_title_format, $title);

		} else if ( isset($post->post_status) && 'private' == $post->post_status ) {

			$private_title_format = apply_filters('private_title_format', __('Private: %s'));

			$title = sprintf($private_title_format, $title);

		}

	}

	return apply_filters( 'the_title', $title, $id );

}

/**

 * Display the Post Global Unique Identifier (guid).

 *

 * The guid will appear to be a link, but should not be used as an link to the

 * post. The reason you should not use it as a link, is because of moving the

 * blog across domains.

 *

 * Url is escaped to make it xml safe

 *

 * @since 1.5.0

 *

 * @param int $id Optional. Post ID.

 */

function the_guid( $id = 0 ) {

	echo esc_url( get_the_guid( $id ) );

}

/**

 * Retrieve the Post Global Unique Identifier (guid).

 *

 * The guid will appear to be a link, but should not be used as an link to the

 * post. The reason you should not use it as a link, is because of moving the

 * blog across domains.

 *

 * @since 1.5.0

 *

 * @param int $id Optional. Post ID.

 * @return string

 */

function get_the_guid( $id = 0 ) {

	$post = &get_post($id);

	return apply_filters('get_the_guid', $post->guid);

}

/**

 * Display the post content.

 *

 * @since 0.71

 *

 * @param string $more_link_text Optional. Content for when there is more text.

 * @param bool $stripteaser Optional. Strip teaser content before the more text. Default is false.

 */

function the_content($more_link_text = null, $stripteaser = false) {

	$content = get_the_content($more_link_text, $stripteaser);

	$content = apply_filters('the_content', $content);

	$content = str_replace(']]>', ']]>', $content);

	echo $content;

}

/**

 * Retrieve the post content.

 *

 * @since 0.71

 *

 * @param string $more_link_text Optional. Content for when there is more text.

 * @param bool $stripteaser Optional. Strip teaser content before the more text. Default is false.

 * @return string

 */

function get_the_content($more_link_text = null, $stripteaser = false) {

	global $post, $more, $page, $pages, $multipage, $preview;

	if ( null === $more_link_text )

		$more_link_text = __( '(more...)' );

	$output = '';

	$hasTeaser = false;

	// If post password required and it doesn't match the cookie.

	if ( post_password_required($post) )

		return get_the_password_form();

	if ( $page > count($pages) ) // if the requested page doesn't exist

		$page = count($pages); // give them the highest numbered page that DOES exist

	$content = $pages[$page-1];

	if ( preg_match('/<!--more(.*?)?-->/', $content, $matches) ) {

		$content = explode($matches[0], $content, 2);

		if ( !empty($matches[1]) && !empty($more_link_text) )

			$more_link_text = strip_tags(wp_kses_no_null(trim($matches[1])));

		$hasTeaser = true;

	} else {

		$content = array($content);

	}

	if ( (false !== strpos($post->post_content, '<!--noteaser-->') && ((!$multipage) || ($page==1))) )

		$stripteaser = true;

	$teaser = $content[0];

	if ( $more && $stripteaser && $hasTeaser )

		$teaser = '';

	$output .= $teaser;

	if ( count($content) > 1 ) {

		if ( $more ) {

			$output .= '<span id="more-' . $post->ID . '"></span>' . $content[1];

		} else {

			if ( ! empty($more_link_text) )

				$output .= apply_filters( 'the_content_more_link', ' <a href="' . get_permalink() . "#more-{$post->ID}\" class=\"more-link\">$more_link_text</a>", $more_link_text );

			$output = force_balance_tags($output);

		}

	}

	if ( $preview ) // preview fix for javascript bug with foreign languages

		$output =	preg_replace_callback('/\%u([0-9A-F]{4})/', '_convert_urlencoded_to_entities', $output);

	return $output;

}

/**

 * Preview fix for javascript bug with foreign languages

 *

 * @since 3.1.0

 * @access private

 * @param array $match Match array from preg_replace_callback

 * @returns string

 */

function _convert_urlencoded_to_entities( $match ) {

	return '&#' . base_convert( $match[1], 16, 10 ) . ';';

}

/**

 * Display the post excerpt.

 *

 * @since 0.71

 * @uses apply_filters() Calls 'the_excerpt' hook on post excerpt.

 */

function the_excerpt() {

	echo apply_filters('the_excerpt', get_the_excerpt());

}

/**

 * Retrieve the post excerpt.

 *

 * @since 0.71

 *

 * @param mixed $deprecated Not used.

 * @return string

 */

function get_the_excerpt( $deprecated = '' ) {

	if ( !empty( $deprecated ) )

		_deprecated_argument( __FUNCTION__, '2.3' );

	global $post;

	$output = $post->post_excerpt;

	if ( post_password_required($post) ) {

		$output = __('There is no excerpt because this is a protected post.');

		return $output;

	}

	return apply_filters('get_the_excerpt', $output);

}

/**

 * Whether post has excerpt.

 *

 * @since 2.3.0

 *

 * @param int $id Optional. Post ID.

 * @return bool

 */

function has_excerpt( $id = 0 ) {

	$post = &get_post( $id );

	return ( !empty( $post->post_excerpt ) );

}

/**

 * Display the classes for the post div.

 *

 * @since 2.7.0

 *

 * @param string|array $class One or more classes to add to the class list.

 * @param int $post_id An optional post ID.

 */

function post_class( $class = '', $post_id = null ) {

	// Separates classes with a single space, collates classes for post DIV

	echo 'class="' . join( ' ', get_post_class( $class, $post_id ) ) . '"';

}

/**

 * Retrieve the classes for the post div as an array.

 *

 * The class names are add are many. If the post is a sticky, then the 'sticky'

 * class name. The class 'hentry' is always added to each post. For each

 * category, the class will be added with 'category-' with category slug is

 * added. The tags are the same way as the categories with 'tag-' before the tag

 * slug. All classes are passed through the filter, 'post_class' with the list

 * of classes, followed by $class parameter value, with the post ID as the last

 * parameter.

 *

 * @since 2.7.0

 *

 * @param string|array $class One or more classes to add to the class list.

 * @param int $post_id An optional post ID.

 * @return array Array of classes.

 */

function get_post_class( $class = '', $post_id = null ) {

	$post = get_post($post_id);

	$classes = array();

	if ( empty($post) )

		return $classes;

	$classes[] = 'post-' . $post->ID;

	$classes[] = $post->post_type;

	$classes[] = 'type-' . $post->post_type;

	$classes[] = 'status-' . $post->post_status;

	// Post Format

	if ( post_type_supports( $post->post_type, 'post-formats' ) ) {

		$post_format = get_post_format( $post->ID );

		if ( $post_format && !is_wp_error($post_format) )

			$classes[] = 'format-' . sanitize_html_class( $post_format );

		else

			$classes[] = 'format-standard';

	}

	// post requires password

	if ( post_password_required($post->ID) )

		$classes[] = 'post-password-required';

	// sticky for Sticky Posts

	if ( is_sticky($post->ID) && is_home() && !is_paged() )

		$classes[] = 'sticky';

	// hentry for hAtom compliance

	$classes[] = 'hentry';

	// Categories

	if ( is_object_in_taxonomy( $post->post_type, 'category' ) ) {

		foreach ( (array) get_the_category($post->ID) as $cat ) {

			if ( empty($cat->slug ) )

				continue;

			$classes[] = 'category-' . sanitize_html_class($cat->slug, $cat->term_id);

		}

	}

	// Tags

	if ( is_object_in_taxonomy( $post->post_type, 'post_tag' ) ) {

		foreach ( (array) get_the_tags($post->ID) as $tag ) {

			if ( empty($tag->slug ) )

				continue;

			$classes[] = 'tag-' . sanitize_html_class($tag->slug, $tag->term_id);

		}

	}

	if ( !empty($class) ) {

		if ( !is_array( $class ) )

			$class = preg_split('#\s+#', $class);

		$classes = array_merge($classes, $class);

	}

	$classes = array_map('esc_attr', $classes);

	return apply_filters('post_class', $classes, $class, $post->ID);

}

/**

 * Display the classes for the body element.

 *

 * @since 2.8.0

 *

 * @param string|array $class One or more classes to add to the class list.

 */

function body_class( $class = '' ) {

	// Separates classes with a single space, collates classes for body element

	echo 'class="' . join( ' ', get_body_class( $class ) ) . '"';

}

/**

 * Retrieve the classes for the body element as an array.

 *

 * @since 2.8.0

 *

 * @param string|array $class One or more classes to add to the class list.

 * @return array Array of classes.

 */

function get_body_class( $class = '' ) {

	global $wp_query, $wpdb;

	$classes = array();

	if ( is_rtl() )

		$classes[] = 'rtl';

	if ( is_front_page() )

		$classes[] = 'home';

	if ( is_home() )

		$classes[] = 'blog';

	if ( is_archive() )

		$classes[] = 'archive';

	if ( is_date() )

		$classes[] = 'date';

	if ( is_search() ) {

		$classes[] = 'search';

		$classes[] = $wp_query->posts ? 'search-results' : 'search-no-results';

	}

	if ( is_paged() )

		$classes[] = 'paged';

	if ( is_attachment() )

		$classes[] = 'attachment';

	if ( is_404() )

		$classes[] = 'error404';