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<?php
/**
* Content
*
* Process the post/page content for embed requests
*
* @package	Artiss-YouTube-Embed
* @since	2.0
*/

/**
* Search content for alternative embed methods
*
* Look through post/page content for various alternative methods of embedding - replace with
* embed code.
*
* @since	2.0
*
* @uses		aye_convert_content			Convert a URL to the embed code
* @uses		aye_generate_youtube_code	Generate the YouTube embed code
* @uses		aye_set_general_defaults		Get general defaults
* @uses		aye_validate_id				Validate the video ID
*
* @param	string		$content		Post/page content
* @return   string						Resulting post/page content
*/

function aye_content_search( $content ) {

$options = aye_set_general_defaults();

// The following are URL modifications

if ( $options[ 'alt' ] == 1 ) {

$changed = true;
		while ( $changed ) {

$changed = false;

// Search for httpv URL
			$identifier = 'httpv://www.youtube.com/watch?v=';
			$search = strpos( $content, $identifier );
			if ( $search !== false ) { $content = aye_convert_content( $content, $identifier, substr( $content, $search + strlen( $identifier ), 11 ), '', '', $options[ 'other_profile' ] ); $changed = true; }

// Search for httpa URL
			$identifier = 'httpa://www.youtube.com/watch?v=';
			$search = strpos( $content, $identifier );
			if ( $search !== false ) { $content = aye_convert_content( $content, $identifier, substr( $content, $search + strlen( $identifier ), 11 ), 1, '', $options[ 'other_profile' ] ); $changed = true; }

// Search for httpvh URL
			$identifier = 'httpvh://www.youtube.com/watch?v=';
			$search = strpos( $content, $identifier );
			if ( $search !== false ) { $content = aye_convert_content( $content, $identifier, substr( $content, $search + strlen( $identifier ), 11 ), '', '', $options[ 'other_profile' ] ); $changed = true; }

// Search for httpvp playlist URL
			$identifier = 'httpvp://www.youtube.com/watch?p=';
			$search = strpos( $content, $identifier );
			if ( $search !== false ) { $content = aye_convert_content( $content, $identifier, substr( $content, $search + strlen( $identifier ), 16 ), '', '', $options[ 'other_profile' ] ); $changed = true; }

// Search for youtube:: URL
			$identifier = 'youtube::';
			$search = strpos( $content, $identifier );
			if ( $search !== false ) {
				$suffix = substr( $content, $search + strlen( $identifier ) + 11, 2 );
				if ( $suffix == '::' ) { $content = aye_convert_content( $content, $identifier, substr( $content, $search + strlen( $identifier ), 11 ), '', '::', $options[ 'other_profile' ] ); $changed = true; }
			}
		}

}

// The following are embedding URLs that are within brackets but are not shortcodes

if ( $options[ 'bracket' ] == 1 ) {

// Loop around content, looking for brackets - possible YouTube URL within!

$current_pos = 0;
		$bracket_found = true;

while ( $bracket_found ) {
			$open_bracket = strpos( $content, '[', $current_pos );

if ($open_bracket !== false) {
				$close_bracket = strpos( $content, ']', $open_bracket );

if ( $close_bracket !== false ) {
					$code = substr( $content, $open_bracket + 1, $close_bracket - $open_bracket - 1 );
					$code_found = false;
					$id = $code;

// Maybe a video ID - validate first

if ( ( strlen( $code ) == 11 ) && ( !strpos( $code, ' ' ) ) ) {
						$type = aye_validate_id( $code );
						if ( $type == 'v' ) { $code_found = true; }
					}

// Video URL

if ( ( strpos ($code, 'youtube.com/watch?v=' ) !== false ) && ( !$code_found ) ) { $code_found = true; }

// Other URLs

if ( ( substr( $code, 0, 8 ) == 'watch?v=' ) && ( !$code_found ) ) {
						$id = substr( $code, 8 );
						$code_found = true;
					}
					if ( ( substr( $code, 0, 2 ) == 'v=' ) && ( !$code_found ) ) {
						$id = substr( $code, 2 );
						$code_found = true;
					}

// If an ID was found, update the code

if ( $code_found ) {
						$ye_code = aye_generate_youtube_code( $id, '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', $options[ 'other_profile' ], '', '' );
						$content = str_replace( '[' . $code . ']', $ye_code, $content );
					}
				}
				$current_pos = $close_bracket;
			} else {
				$bracket_found = false;
			}
		}
	}

return $content;
}
add_filter( 'the_content', 'aye_content_search' );

/**
* Convert the Content
*
* Convert the URL to the embed code
*
* @since	2.0
*
* @uses		aye_generate_youtube_code	Generate the embed code
*
* @param    string		$content		The post content
* @param	string		$identifier		The text that identifies the embed
* @param	string		$id				The video ID
* @param	string		$audio			Audio only?
* @param	string		$suffix			Characters that appear after the video ID
* @param	string		$profile		The current profile
* @return   string						Content to return
*/

function aye_convert_content( $content, $identifier, $id, $audio = '', $suffix = '', $profile = '' ) {

$code = aye_generate_youtube_code( $id, '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', $profile, '', $audio );
	$content = str_replace( $identifier.$id.$suffix, $code, $content);

return $content;
}

/**
* Filter comments
*
* Filter comments and add YouTube embeds
*
* @since	2.0
*
* @uses		aye_set_general_defaults		Get the general defaults
* @uses		aye_generate_youtube_code	Generate the YouTube embed code
*
* @param    string		$content		The comments content
* @return   string						Content to return
*/

function aye_filter_comments( $content ) {

$options = aye_set_general_defaults();

if ( $options[ 'comments' ] == 1 ) {

$identifier = 'http://www.youtube.com/watch?v=';
		$search_pos = 0;
		$search = strpos( $content, $identifier, $search_pos );

while ( $search !== false ) {
			$prefix = substr( $content, $search - 1, 1 );
			if ( ( $prefix != ']' ) && ( $prefix != '"' ) && ( $prefix != "'" ) ) {

// Check if link around video. If so, work out how much more needs stripping out

$anchor_start = 0;
				$anchor_end = 0;
				if ( $prefix == ">" ) {
					$anchor_pos = strrpos( substr( $content, 0, $search ), '<a' );
					if ( $anchor_pos !== false ) {
						$anchor_start = $search - $anchor_pos;
						$anchor_end = strpos(substr($content,$search),'</a>') - strlen($identifier) - 11;
					}
				}

// Work out video ID and generate code

$id = substr( $content, $search + strlen( $identifier ), 11 );
				$code = aye_generate_youtube_code( $id, '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', $options[ 'comments_profile' ], '', '' );

// Now replace the URL with the resultant code

$first_section = $search - 1 - $anchor_start;
				if ( $first_section < 1 ) {
					$content = $code . substr( $content, $search + strlen( $identifier ) + 11 + $anchor_end );
				} else {
					$content = substr( $content, 0, $first_section ) . $code . substr( $content, $search + strlen( $identifier ) + 11 + $anchor_end );
				}

$search_pos = $search + strlen( $code ) - $anchor_start;
			} else {
				$search_pos = $search + strlen( $identifier ) + 11;
			}
			$search = strpos( $content, $identifier, $search_pos - 1);
		}
	}
	return $content;
}
add_filter( 'comment_text', 'aye_filter_comments' );
?>