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misc-functions.php
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<?php /** * WPRSS Let To Num * * Does Size Conversions * * @since 3.1 * @author Chris Christoff * @return $ret */ function wprss_let_to_num( $v ) { $l = substr( $v, -1 ); $ret = substr( $v, 0, -1 ); switch ( strtoupper( $l ) ) { case 'P': $ret *= 1024; case 'T': $ret *= 1024; case 'G': $ret *= 1024; case 'M': $ret *= 1024; case 'K': $ret *= 1024; break; } return $ret; } /** * An enhanced version of WP's media_sideload_image function. * * If media_sideload_image fails, the file is downloaded manually * as an image, inserted as an attachment, and attached to the post. * * @since 3.5.1 */ function wprss_media_sideload_image( $file, $post_id, $desc = null ) { try { if ( ! empty( $file ) ) { // Download file to temp location $tmp = download_url( $file ); // Set variables for storage // fix file filename for query strings preg_match( '/[^\?]+\.(jpe?g|jpe|gif|png)\b/i', $file, $matches ); if ( count( $matches ) > 0 ) { $file_array['name'] = basename( $matches[0] ); } else { preg_match( '/[\/\?\=\&]([^\/\?\=\&]*)[\?]*$/i', $file, $matches2 ); if ( count( $matches2 ) > 1 ) { $file_array['name'] = $matches2[1] . '.png'; } else { @unlink( $tmp ); return "<img src='$file' alt='' />"; } } $file_array['tmp_name'] = $tmp; // If error storing temporarily, unlink if ( is_wp_error( $tmp ) ) { @unlink( $file_array['tmp_name'] ); $file_array['tmp_name'] = ''; } // do the validation and storage stuff $id = media_handle_sideload( $file_array, $post_id, $desc ); // If error storing permanently, unlink if ( is_wp_error($id) ) { @unlink( $file_array['tmp_name'] ); return "<img src='$file' alt='' />"; } $src = wp_get_attachment_url( $id ); } // Finally check to make sure the file has been saved, then return the html if ( ! empty( $src ) ) { $alt = isset( $desc )? esc_attr($desc) : ''; $html = "<img src='$src' alt='$alt' />"; return $html; } } catch( Exception $e ) { return "<img src='$file' alt='' />"; } } /** * A list of void tags, e.g. tags that don't require a closing tag, * also known as self-closing tags. * * @since 4.2.7 * @link http://stackoverflow.com/questions/13915201/what-tags-in-html5-are-acknowledged-of-being-self-closing * @return array An array where values are tag names. */ function wprss_html5_get_void_tags() { return apply_filters( 'wprss_html5_void_tags', array( 'area', 'base', 'br', 'col', 'command', 'embed', 'hr', 'img', 'input', 'keygen', 'link', 'meta', 'param', 'source', 'track', 'wbr', 'basefont', 'bgsound', 'frame', 'isindex' )); } /** * Trims the given text by a fixed number of words, and preserving HTML. * * Collapses all white space, trims the text up to a certain number of words, and * preserves all HTML markup. HTML tags do not count as words. * Uses WordPress `wp_trim_words` internally. * Uses mostly trivial regex. Works by removing, then re-adding tags. * Just as well closes open tags by counting them. * * @param string $text The text to trim. * @param string $max_words The maximum number of words. * @param array $allowed_tags The allows tags. Regular array of tag names. * @return string The trimmed text. */ function wprss_trim_words( $text, $max_words, $allowed_tags = array(), $self_closing_tags = null ) { // See http://haacked.com/archive/2004/10/25/usingregularexpressionstomatchhtml.aspx/ $html_regex = <<<EOS (</?(\w+)(?:(?:\s+\w+(?:\s*=\s*(?:".*?"|'.*?'|[^'">\s]+))?)+\s*|\s*)/?>) EOS; $html_regex_str = sprintf ('!%1$s!', $html_regex ); // Collapsing single-line white space $text = preg_replace( '!\s+!', ' ', $text ); // Tags that are always self-closing if ( is_null( $self_closing_tags ) ) { $self_closing_tags = function_exists('wprss_html5_get_void_tags') ? array_flip( wprss_html5_get_void_tags() ) : array(); } // Enum of tag types $tag_type = array( 'opening' => 1, 'closing' => 2, 'self-closing' => 0 ); /* * Split text using tags as delimiters. * The resulting array is a sequence of elements as follows: * 0 - The complete tag that it was delimited by * 1 - The name of that tag * 2 - The text that follows it until the next tag * * Each element contains 2 indexes: * 0 - The element content * 1 - The position in the original string, at which it was found * * For instance: * <span>hello</span> how do <em>you do</em>? * * Will result in an array (not actaul structure) containing: * <span>, span, hello, </span>, span, how do, <em>, em, you do, </em>, em, ? */ $text_array = preg_split( $html_regex_str, // Match HTML Regex above $text, // Split the text -1, // No split limit // FLAGS PREG_SPLIT_DELIM_CAPTURE // Capture delimiters (html tags) | PREG_SPLIT_OFFSET_CAPTURE // Record the string offset of each part ); /* * Get first element of the array (leading text with no HTML), and add it to a string. * This string will contain the plain text (no HTML) only after the follow foreach loop. */ $text_start = array_shift( $text_array ); $plain_text = $text_start[0]; /* * Chunk the array in groups of 3. This will take each 3 consecutive elements * and group them together. */ $pieces = array_chunk( $text_array, 3 ); /* * Iterate over each group and: * 1. Generate plain text without HTML * 2. Add apropriate tag type to each group */ foreach ( $pieces as $idx => $piece ) { // Get the data $tag_piece = $piece[0]; $text_piece = $piece[2]; $tag_name = $piece[1][0]; // Compile all plain text together $plain_text .= $text_piece[0]; // Check the tag and assign the proper tag type $tag = $tag_piece[0]; $pieces[ $idx ][1][2] = ( substr( $tag, 0, 2 ) === '</' ) ? $tag_type['closing'] : ( (substr( $tag, strlen( $tag ) - 2, 2 ) === '/>' || array_key_exists( $tag_name, $self_closing_tags)) ? $tag_type['self-closing'] : $tag_type['opening'] ); } // Stock trimming of words $plain_text = wp_trim_words_wprss( $plain_text, $max_words, '' ); /* * Put the tags back, using the offsets recorded * This is where the sweet magic happens */ // Cache to only check `in_array` once for each tag type $allowed_tags_cache = array(); // For counting open tags $tags_to_close = array(); // Since some tags will not be included... $tag_position_offset = 0; $text = $plain_text; // Iterate the groups once more foreach ( $pieces as $idx => $piece ) { // Tag and tagname $_tag_piece = $piece[0]; $_tag_name_piece = $piece[1]; // Name of the tag $_tag_name = strtolower( $_tag_name_piece[0] ); // Tag type $_tag_type = $_tag_name_piece[2]; // Text of the tag $_tag = $_tag_piece[0]; // Position of the tag in the original string $_tag_position = $_tag_piece[1]; $_actual_tag_position = $_tag_position - $tag_position_offset; // Caching result if ( !isset( $allowed_tags_cache[$_tag_name] ) ) $allowed_tags_cache[$_tag_name] = in_array( $_tag_name, $allowed_tags ); // Whether to stop (tag position is outside the trimmed text) if( $_actual_tag_position >= strlen( $text ) ) break; // Whether to skip tag if ( !$allowed_tags_cache[$_tag_name] ) { $tag_position_offset += strlen( $_tag ); // To correct for removed chars continue; } // If the tag is an opening tag, record it in $tags_to_close if( $_tag_type === $tag_type['opening'] ) array_push( $tags_to_close, $_tag_name ); // If it is a closing tag, remove it from $tags_to_close elseif( $_tag_type === $tag_type['closing'] ) array_pop( $tags_to_close ); // Inserting tag back into place $text = substr_replace( $text, $_tag, $_actual_tag_position, 0); } // Add the appropriate closing tags to all unclosed tags foreach( $tags_to_close as $_tag_name ) { $text .= sprintf('</%1$s>', $_tag_name); } return $text; } /** * Clone of wp_trim_words, without using the PREG_SPLIT_NO_EMPTY flag for preg_split * * Trims text to a certain number of words. * This function is localized. For languages that count 'words' by the individual * character (such as East Asian languages), the $num_words argument will apply * to the number of individual characters. * * @param string $text Text to trim. * @param int $num_words Number of words. Default 55. * @param string $more Optional. What to append if $text needs to be trimmed. Default '…'. * @return string Trimmed text. */ function wp_trim_words_wprss( $text, $num_words = 55, $more = null ) { if ( null === $more ) { $more = __( '…' ); } $original_text = $text; $text = ltrim($text); $prefix = substr($original_text, 0, strlen($original_text) - strlen($text)); /* translators: If your word count is based on single characters (East Asian characters), enter 'characters'. Otherwise, enter 'words'. Do not translate into your own language. */ if ( 'characters' == _x( 'words', 'word count: words or characters?' ) && preg_match( '/^utf\-?8$/i', get_option( 'blog_charset' ) ) ) { $text = trim( preg_replace( "/[\n\r\t ]+/", ' ', $text ), ' ' ); preg_match_all( '/./u', $text, $words_array ); $words_array = array_slice( $words_array[0], 0, $num_words + 1 ); $sep = ''; } else { $words_array = preg_split( "/[\n\r\t ]/", $text, $num_words + 1 ); $sep = ' '; } if ( count( $words_array ) > $num_words ) { array_pop( $words_array ); $text = implode( $sep, $words_array ); $text = $text . $more; } else { $text = implode( $sep, $words_array ); } $text = $prefix . $text; /** * Filter the text content after words have been trimmed. * * @since 3.3.0 * * @param string $text The trimmed text. * @param int $num_words The number of words to trim the text to. Default 5. * @param string $more An optional string to append to the end of the trimmed text, e.g. …. * @param string $original_text The text before it was trimmed. */ return apply_filters( 'wp_trim_words', $text, $num_words, $more, $original_text ); } function wprss_validate_url( $url ) { $expression = '(' . # Capture 1: entire matched URL '(?:' . '[a-z][\w-]+:' . # URL protocol and colon '(?:' . '/{1,3}' . # 1-3 slashes '|' . # or 'a-z0-9%' . # Single letter or digit or '%' # (Trying not to match e.g. "URI::Escape") ')' . '|' . # or 'www\d{0,3}[.]' . # "www.", "www1.", "www2." … "www999." '|' . # or '[a-z0-9.\-]+[.][a-z]{2,4}/' . # looks like domain name followed by a slash ')' . '(?:' . # One or more: '[^\s()<>]+' . # Run of non-space, non-()<> '|' . # or '\(([^\s()<>]+|(\([^\s()<>]+\)))*\)' . # balanced parens, up to 2 levels ')+' . '(?:' . # End with: '\(([^\s()<>]+|(\([^\s()<>]+\)))*\)' . # balanced parens, up to 2 levels '|' . # or '[^\s`\!()\[\]{};:\'".,<>?«»“”‘’]' . # not a space or one of these punct chars ')' . ')'; return preg_match('!' . $expression . '!', $url) ? $url : null; } if (!function_exists('wprss_verify_nonce')) { /** * Check if a WP nonce sent in a reques is valid. * * @since 4.9 * @see wp_verify_nonce() * @param string $action ID of the action, for which checking the nonce. * @param string $queryArg Name of the key in the $_REQUEST global * which contains the nonce value. * @return bool|int False if nonce invalid, 1 if it's the first 12 hours of * validity, 2 if the second 12 hours. */ function wprss_verify_nonce($action, $queryArg) { return isset($_REQUEST[$queryArg]) ? wp_verify_nonce($_REQUEST[$queryArg], $action) : false; } } /** * Formats a hook callback into a readable string. * * @param array $callback A callback entry. * * @return string The callback name. */ function wprss_format_hook_callback(array $callback) { // Break static strings: "Example::method" // into arrays: ["Example", "method"] if (is_string($callback['function']) && (strpos($callback['function'], '::') !== false)) { $callback['function'] = explode('::', $callback['function']); } if (is_array($callback['function'])) { if (is_object($callback['function'][0])) { $class = get_class($callback['function'][0]); $access = '->'; } else { $class = $callback['function'][0]; $access = '::'; } $callback['name'] = $class . $access . $callback['function'][1] . '()'; } elseif (is_object($callback['function'])) { if (is_a($callback['function'], 'Closure')) { $callback['name'] = 'Closure'; } else { $class = get_class($callback['function']); $callback['name'] = $class . '->__invoke()'; } } else { $callback['name'] = $callback['function'] . '()'; } return $callback['name']; } /** * Retrieves the file extension from a URI. * * @since 4.18 * * @param string $uri The URI * * @return string|null The file extension or null if it could not be determined. */ function wpra_get_uri_extension($uri) { $path = parse_url($uri, PHP_URL_PATH); if (!$path || empty($path)) { return null; } return strtolower(pathinfo($path, PATHINFO_EXTENSION)); }
/home/sudancam/././www/wp-content/plugins/wp-rss-aggregator/includes/misc-functions.php