X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/256a3b381f63716209b3527d0a14442ae570c283..refs/tags/wordpress-4.2.3:/wp-includes/formatting.php diff --git a/wp-includes/formatting.php b/wp-includes/formatting.php index c56d8201..08c367c6 100644 --- a/wp-includes/formatting.php +++ b/wp-includes/formatting.php @@ -11,28 +11,53 @@ * Replaces common plain text characters into formatted entities * * As an example, - * - * 'cause today's effort makes it worth tomorrow's "holiday"... - * + * + * 'cause today's effort makes it worth tomorrow's "holiday" ... + * * Becomes: - * - * ’cause today’s effort makes it worth tomorrow’s “holiday”… - * + * + * ’cause today’s effort makes it worth tomorrow’s “holiday” … + * * Code within certain html blocks are skipped. * * @since 0.71 * @uses $wp_cockneyreplace Array of formatted entities for certain common phrases * * @param string $text The text to be formatted + * @param bool $reset Set to true for unit testing. Translated patterns will reset. * @return string The string replaced with html entities */ -function wptexturize($text) { - global $wp_cockneyreplace; +function wptexturize($text, $reset = false) { + global $wp_cockneyreplace, $shortcode_tags; static $static_characters, $static_replacements, $dynamic_characters, $dynamic_replacements, - $default_no_texturize_tags, $default_no_texturize_shortcodes; + $default_no_texturize_tags, $default_no_texturize_shortcodes, $run_texturize = true; + + // If there's nothing to do, just stop. + if ( empty( $text ) || false === $run_texturize ) { + return $text; + } + + // Set up static variables. Run once only. + if ( $reset || ! isset( $static_characters ) ) { + /** + * Filter whether to skip running wptexturize(). + * + * Passing false to the filter will effectively short-circuit wptexturize(). + * returning the original text passed to the function instead. + * + * The filter runs only once, the first time wptexturize() is called. + * + * @since 4.0.0 + * + * @see wptexturize() + * + * @param bool $run_texturize Whether to short-circuit wptexturize(). + */ + $run_texturize = apply_filters( 'run_wptexturize', $run_texturize ); + if ( false === $run_texturize ) { + return $text; + } - // No need to set up these static variables more than once - if ( ! isset( $static_characters ) ) { /* translators: opening curly double quote */ $opening_quote = _x( '“', 'opening curly double quote' ); /* translators: closing curly double quote */ @@ -61,45 +86,102 @@ function wptexturize($text) { // if a plugin has provided an autocorrect array, use it if ( isset($wp_cockneyreplace) ) { - $cockney = array_keys($wp_cockneyreplace); - $cockneyreplace = array_values($wp_cockneyreplace); + $cockney = array_keys( $wp_cockneyreplace ); + $cockneyreplace = array_values( $wp_cockneyreplace ); } elseif ( "'" != $apos ) { // Only bother if we're doing a replacement. - $cockney = array( "'tain't", "'twere", "'twas", "'tis", "'twill", "'til", "'bout", "'nuff", "'round", "'cause" ); - $cockneyreplace = array( $apos . "tain" . $apos . "t", $apos . "twere", $apos . "twas", $apos . "tis", $apos . "twill", $apos . "til", $apos . "bout", $apos . "nuff", $apos . "round", $apos . "cause" ); + $cockney = array( "'tain't", "'twere", "'twas", "'tis", "'twill", "'til", "'bout", "'nuff", "'round", "'cause", "'em" ); + $cockneyreplace = array( $apos . "tain" . $apos . "t", $apos . "twere", $apos . "twas", $apos . "tis", $apos . "twill", $apos . "til", $apos . "bout", $apos . "nuff", $apos . "round", $apos . "cause", $apos . "em" ); } else { $cockney = $cockneyreplace = array(); } - $static_characters = array_merge( array( '---', ' -- ', '--', ' - ', 'xn–', '...', '``', '\'\'', ' (tm)' ), $cockney ); - $static_replacements = array_merge( array( $em_dash, ' ' . $em_dash . ' ', $en_dash, ' ' . $en_dash . ' ', 'xn--', '…', $opening_quote, $closing_quote, ' ™' ), $cockneyreplace ); + $static_characters = array_merge( array( '...', '``', '\'\'', ' (tm)' ), $cockney ); + $static_replacements = array_merge( array( '…', $opening_quote, $closing_quote, ' ™' ), $cockneyreplace ); + + // Pattern-based replacements of characters. + // Sort the remaining patterns into several arrays for performance tuning. + $dynamic_characters = array( 'apos' => array(), 'quote' => array(), 'dash' => array() ); + $dynamic_replacements = array( 'apos' => array(), 'quote' => array(), 'dash' => array() ); $dynamic = array(); - if ( "'" != $apos ) { - $dynamic[ '/\'(\d\d(?:’|\')?s)/' ] = $apos . '$1'; // '99's - $dynamic[ '/\'(\d)/' ] = $apos . '$1'; // '99 + $spaces = wp_spaces_regexp(); + + // '99' and '99" are ambiguous among other patterns; assume it's an abbreviated year at the end of a quotation. + if ( "'" !== $apos || "'" !== $closing_single_quote ) { + $dynamic[ '/\'(\d\d)\'(?=\Z|[.,)}\-\]]|>|' . $spaces . ')/' ] = $apos . '$1' . $closing_single_quote; + } + if ( "'" !== $apos || '"' !== $closing_quote ) { + $dynamic[ '/\'(\d\d)"(?=\Z|[.,)}\-\]]|>|' . $spaces . ')/' ] = $apos . '$1' . $closing_quote; } - if ( "'" != $opening_single_quote ) - $dynamic[ '/(\s|\A|[([{<]|")\'/' ] = '$1' . $opening_single_quote; // opening single quote, even after (, {, <, [ - if ( '"' != $double_prime ) - $dynamic[ '/(\d)"/' ] = '$1' . $double_prime; // 9" (double prime) - if ( "'" != $prime ) - $dynamic[ '/(\d)\'/' ] = '$1' . $prime; // 9' (prime) - if ( "'" != $apos ) - $dynamic[ '/(\S)\'([^\'\s])/' ] = '$1' . $apos . '$2'; // apostrophe in a word - if ( '"' != $opening_quote ) - $dynamic[ '/(\s|\A|[([{<])"(?!\s)/' ] = '$1' . $opening_quote . '$2'; // opening double quote, even after (, {, <, [ - if ( '"' != $closing_quote ) - $dynamic[ '/"(\s|\S|\Z)/' ] = $closing_quote . '$1'; // closing double quote - if ( "'" != $closing_single_quote ) - $dynamic[ '/\'([\s.]|\Z)/' ] = $closing_single_quote . '$1'; // closing single quote - - $dynamic[ '/\b(\d+)x(\d+)\b/' ] = '$1×$2'; // 9x9 (times) - - $dynamic_characters = array_keys( $dynamic ); - $dynamic_replacements = array_values( $dynamic ); - } - - // Transform into regexp sub-expression used in _wptexturize_pushpop_element + + // '99 '99s '99's (apostrophe) But never '9 or '99% or '999 or '99.0. + if ( "'" !== $apos ) { + $dynamic[ '/\'(?=\d\d(?:\Z|(?![%\d]|[.,]\d)))/' ] = $apos; + } + + // Quoted Numbers like '0.42' + if ( "'" !== $opening_single_quote && "'" !== $closing_single_quote ) { + $dynamic[ '/(?<=\A|' . $spaces . ')\'(\d[.,\d]*)\'/' ] = $opening_single_quote . '$1' . $closing_single_quote; + } + + // Single quote at start, or preceded by (, {, <, [, ", -, or spaces. + if ( "'" !== $opening_single_quote ) { + $dynamic[ '/(?<=\A|[([{"\-]|<|' . $spaces . ')\'/' ] = $opening_single_quote; + } + + // Apostrophe in a word. No spaces, double apostrophes, or other punctuation. + if ( "'" !== $apos ) { + $dynamic[ '/(?|\[.*\])/Us', $text, -1, PREG_SPLIT_DELIM_CAPTURE); + // Look for shortcodes and HTML elements. + + $tagnames = array_keys( $shortcode_tags ); + $tagregexp = join( '|', array_map( 'preg_quote', $tagnames ) ); + $tagregexp = "(?:$tagregexp)(?![\\w-])"; // Excerpt of get_shortcode_regex(). + + $comment_regex = + '!' // Start of comment, after the <. + . '(?:' // Unroll the loop: Consume everything until --> is found. + . '-(?!->)' // Dash not followed by end of comment. + . '[^\-]*+' // Consume non-dashes. + . ')*+' // Loop possessively. + . '(?:-->)?'; // End of comment. If not found, match all input. + + $shortcode_regex = + '\[' // Find start of shortcode. + . '[\/\[]?' // Shortcodes may begin with [/ or [[ + . $tagregexp // Only match registered shortcodes, because performance. + . '(?:' + . '[^\[\]<>]+' // Shortcodes do not contain other shortcodes. Quantifier critical. + . '|' + . '<[^\[\]>]*>' // HTML elements permitted. Prevents matching ] before >. + . ')*+' // Possessive critical. + . '\]' // Find end of shortcode. + . '\]?'; // Shortcodes may end with ]] + + $regex = + '/(' // Capture the entire match. + . '<' // Find start of element. + . '(?(?=!--)' // Is this a comment? + . $comment_regex // Find end of comment. + . '|' + . '[^>]*>' // Find end of element. + . ')' + . '|' + . $shortcode_regex // Find shortcodes. + . ')/s'; + + $textarr = preg_split( $regex, $text, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY ); foreach ( $textarr as &$curl ) { - if ( empty( $curl ) ) + // Only call _wptexturize_pushpop_element if $curl is a delimiter. + $first = $curl[0]; + if ( '<' === $first && ' is found. + . '-(?!->)' // Dash not followed by end of comment. + . '[^\-]*+' // Consume non-dashes. + . ')*+' // Loop possessively. + . '(?:-->)?'; // End of comment. If not found, match all input. + + $regex = + '/(' // Capture the entire match. + . '<' // Find start of element. + . '(?(?=!--)' // Is this a comment? + . $comments // Find end of comment. + . '|' + . '[^>]*>?' // Find end of element. If not found, match all input. + . ')' + . ')/s'; + + $textarr = preg_split( $regex, $haystack, -1, PREG_SPLIT_DELIM_CAPTURE ); + $changed = false; + + // Optimize when searching for one item. + if ( 1 === count( $replace_pairs ) ) { + // Extract $needle and $replace. + foreach ( $replace_pairs as $needle => $replace ); + + // Loop through delimeters (elements) only. + for ( $i = 1, $c = count( $textarr ); $i < $c; $i += 2 ) { + if ( false !== strpos( $textarr[$i], $needle ) ) { + $textarr[$i] = str_replace( $needle, $replace, $textarr[$i] ); + $changed = true; + } + } + } else { + // Extract all $needles. + $needles = array_keys( $replace_pairs ); + + // Loop through delimeters (elements) only. + for ( $i = 1, $c = count( $textarr ); $i < $c; $i += 2 ) { + foreach ( $needles as $needle ) { + if ( false !== strpos( $textarr[$i], $needle ) ) { + $textarr[$i] = strtr( $textarr[$i], $replace_pairs ); + $changed = true; + // After one strtr() break out of the foreach loop and look at next element. + break; + } + } + } + } + + if ( $changed ) { + $haystack = implode( $textarr ); + } + + return $haystack; +} + /** * Newline preservation help function for wpautop * @@ -287,7 +596,7 @@ function _autop_newline_preservation_helper( $matches ) { /** * Don't auto-p wrap shortcodes that stand alone * - * Ensures that shortcodes are not wrapped in <

>...<

>. + * Ensures that shortcodes are not wrapped in `

...

`. * * @since 2.9.0 * @@ -302,11 +611,12 @@ function shortcode_unautop( $pee ) { } $tagregexp = join( '|', array_map( 'preg_quote', array_keys( $shortcode_tags ) ) ); + $spaces = wp_spaces_regexp(); $pattern = '/' . '

' // Opening paragraph - . '\\s*+' // Optional leading whitespace + . '(?:' . $spaces . ')*+' // Optional leading whitespace . '(' // 1: The shortcode . '\\[' // Opening bracket . "($tagregexp)" // 2: Shortcode name @@ -331,7 +641,7 @@ function shortcode_unautop( $pee ) { . ')?' . ')' . ')' - . '\\s*+' // optional trailing whitespace + . '(?:' . $spaces . ')*+' // optional trailing whitespace . '<\\/p>' // closing paragraph . '/s'; @@ -351,17 +661,19 @@ function shortcode_unautop( $pee ) { * @return bool True if $str fits a UTF-8 model, false otherwise. */ function seems_utf8($str) { + mbstring_binary_safe_encoding(); $length = strlen($str); + reset_mbstring_encoding(); for ($i=0; $i < $length; $i++) { $c = ord($str[$i]); - if ($c < 0x80) $n = 0; # 0bbbbbbb - elseif (($c & 0xE0) == 0xC0) $n=1; # 110bbbbb - elseif (($c & 0xF0) == 0xE0) $n=2; # 1110bbbb - elseif (($c & 0xF8) == 0xF0) $n=3; # 11110bbb - elseif (($c & 0xFC) == 0xF8) $n=4; # 111110bb - elseif (($c & 0xFE) == 0xFC) $n=5; # 1111110b - else return false; # Does not match any model - for ($j=0; $j<$n; $j++) { # n bytes matching 10bbbbbb follow ? + if ($c < 0x80) $n = 0; // 0bbbbbbb + elseif (($c & 0xE0) == 0xC0) $n=1; // 110bbbbb + elseif (($c & 0xF0) == 0xE0) $n=2; // 1110bbbb + elseif (($c & 0xF8) == 0xF0) $n=3; // 11110bbb + elseif (($c & 0xFC) == 0xF8) $n=4; // 111110bb + elseif (($c & 0xFE) == 0xFC) $n=5; // 1111110b + else return false; // Does not match any model + for ($j=0; $j<$n; $j++) { // n bytes matching 10bbbbbb follow ? if ((++$i == $length) || ((ord($str[$i]) & 0xC0) != 0x80)) return false; } @@ -381,7 +693,7 @@ function seems_utf8($str) { * @access private * * @param string $string The text which is to be encoded. - * @param mixed $quote_style Optional. Converts double quotes if set to ENT_COMPAT, both single and double if set to ENT_QUOTES or none if set to ENT_NOQUOTES. Also compatible with old values; converting single quotes if set to 'single', double if set to 'double' or both if otherwise set. Default is ENT_NOQUOTES. + * @param int $quote_style Optional. Converts double quotes if set to ENT_COMPAT, both single and double if set to ENT_QUOTES or none if set to ENT_NOQUOTES. Also compatible with old values; converting single quotes if set to 'single', double if set to 'double' or both if otherwise set. Default is ENT_NOQUOTES. * @param string $charset Optional. The character encoding of the string. Default is false. * @param boolean $double_encode Optional. Whether to encode existing html entities. Default is false. * @return string The encoded text with HTML entities. @@ -437,9 +749,9 @@ function _wp_specialchars( $string, $quote_style = ENT_NOQUOTES, $charset = fals // Now re-encode everything except &entity; $string = preg_split( '/(&#?x?[0-9a-z]+;)/i', $string, -1, PREG_SPLIT_DELIM_CAPTURE ); - for ( $i = 0; $i < count( $string ); $i += 2 ) + for ( $i = 0, $c = count( $string ); $i < $c; $i += 2 ) { $string[$i] = @htmlspecialchars( $string[$i], $quote_style, $charset ); - + } $string = implode( '', $string ); } @@ -575,7 +887,10 @@ function utf8_uri_encode( $utf8_string, $length = 0 ) { $num_octets = 1; $unicode_length = 0; + mbstring_binary_safe_encoding(); $string_length = strlen( $utf8_string ); + reset_mbstring_encoding(); + for ($i = 0; $i < $string_length; $i++ ) { $value = ord( $utf8_string[ $i ] ); @@ -586,21 +901,27 @@ function utf8_uri_encode( $utf8_string, $length = 0 ) { $unicode .= chr($value); $unicode_length++; } else { - if ( count( $values ) == 0 ) $num_octets = ( $value < 224 ) ? 2 : 3; + if ( count( $values ) == 0 ) { + if ( $value < 224 ) { + $num_octets = 2; + } elseif ( $value < 240 ) { + $num_octets = 3; + } else { + $num_octets = 4; + } + } $values[] = $value; if ( $length && ( $unicode_length + ($num_octets * 3) ) > $length ) break; if ( count( $values ) == $num_octets ) { - if ($num_octets == 3) { - $unicode .= '%' . dechex($values[0]) . '%' . dechex($values[1]) . '%' . dechex($values[2]); - $unicode_length += 9; - } else { - $unicode .= '%' . dechex($values[0]) . '%' . dechex($values[1]); - $unicode_length += 6; + for ( $j = 0; $j < $num_octets; $j++ ) { + $unicode .= '%' . dechex( $values[ $j ] ); } + $unicode_length += $num_octets * 3; + $values = array(); $num_octets = 1; } @@ -823,6 +1144,7 @@ function remove_accents($string) { $string = strtr($string, $chars); } else { + $chars = array(); // Assume ISO-8859-1 if not UTF-8 $chars['in'] = chr(128).chr(131).chr(138).chr(142).chr(154).chr(158) .chr(159).chr(162).chr(165).chr(181).chr(192).chr(193).chr(194) @@ -838,6 +1160,7 @@ function remove_accents($string) { $chars['out'] = "EfSZszYcYuAAAAAACEEEEIIIINOOOOOOUUUUYaaaaaaceeeeiiiinoooooouuuuyy"; $string = strtr($string, $chars['in'], $chars['out']); + $double_chars = array(); $double_chars['in'] = array(chr(140), chr(156), chr(198), chr(208), chr(222), chr(223), chr(230), chr(240), chr(254)); $double_chars['out'] = array('OE', 'oe', 'AE', 'DH', 'TH', 'ss', 'ae', 'dh', 'th'); $string = str_replace($double_chars['in'], $double_chars['out'], $string); @@ -872,9 +1195,11 @@ function sanitize_file_name( $filename ) { * @param string $filename_raw Filename as it was passed into sanitize_file_name(). */ $special_chars = apply_filters( 'sanitize_file_name_chars', $special_chars, $filename_raw ); - $filename = str_replace($special_chars, '', $filename); - $filename = preg_replace('/[\s-]+/', '-', $filename); - $filename = trim($filename, '.-_'); + $filename = preg_replace( "#\x{00a0}#siu", ' ', $filename ); + $filename = str_replace( $special_chars, '', $filename ); + $filename = str_replace( array( '%20', '+' ), '-', $filename ); + $filename = preg_replace( '/[\r\n\t -]+/', '-', $filename ); + $filename = trim( $filename, '.-_' ); // Split the filename into a base and extension[s] $parts = explode('.', $filename); @@ -1033,7 +1358,6 @@ function sanitize_title( $title, $fallback_title = '', $context = 'save' ) { * Used for querying the database for a value from URL. * * @since 3.1.0 - * @uses sanitize_title() * * @param string $title The string to be sanitized. * @return string The sanitized string. @@ -1109,21 +1433,23 @@ function sanitize_title_with_dashes( $title, $raw_title = '', $context = 'displa } /** - * Ensures a string is a valid SQL order by clause. + * Ensures a string is a valid SQL 'order by' clause. + * + * Accepts one or more columns, with or without a sort order (ASC / DESC). + * e.g. 'column_1', 'column_1, column_2', 'column_1 ASC, column_2 DESC' etc. * - * Accepts one or more columns, with or without ASC/DESC, and also accepts - * RAND(). + * Also accepts 'RAND()'. * * @since 2.5.1 * - * @param string $orderby Order by string to be checked. - * @return string|bool Returns the order by clause if it is a match, false otherwise. + * @param string $orderby Order by clause to be validated. + * @return string|bool Returns $orderby if valid, false otherwise. */ -function sanitize_sql_orderby( $orderby ){ - preg_match('/^\s*([a-z0-9_]+(\s+(ASC|DESC))?(\s*,\s*|\s*$))+|^\s*RAND\(\s*\)\s*$/i', $orderby, $obmatches); - if ( !$obmatches ) - return false; - return $orderby; +function sanitize_sql_orderby( $orderby ) { + if ( preg_match( '/^\s*(([a-z0-9_]+|`[a-z0-9_]+`)(\s+(ASC|DESC))?\s*(,\s*(?=[a-z0-9_`])|$))+$/i', $orderby ) || preg_match( '/^\s*RAND\(\s*\)\s*$/i', $orderby ) ) { + return $orderby; + } + return false; } /** @@ -1137,7 +1463,7 @@ function sanitize_sql_orderby( $orderby ){ * @since 2.8.0 * * @param string $class The classname to be sanitized - * @param string $fallback Optional. The value to return if the sanitization end's up as an empty string. + * @param string $fallback Optional. The value to return if the sanitization ends up as an empty string. * Defaults to an empty string. * @return string The sanitized value */ @@ -1166,7 +1492,7 @@ function sanitize_html_class( $class, $fallback = '' ) { /** * Converts a number of characters from a string. * - * Metadata tags <> and <<category>> are removed, <<br>> and <<hr>> are + * Metadata tags `<title>` and `<category>` are removed, `<br>` and `<hr>` are * converted into correct XHTML and Unicode characters are converted to the * valid range. * @@ -1300,7 +1626,7 @@ function force_balance_tags( $text ) { // or close to be safe $tag = '/' . $tag; } // if stacktop value = tag close value then pop - else if ( $tagstack[$stacksize - 1] == $tag ) { // found closing tag + elseif ( $tagstack[$stacksize - 1] == $tag ) { // found closing tag $tag = '</' . $tag . '>'; // Close Tag // Pop array_pop( $tagstack ); @@ -1408,26 +1734,6 @@ function format_to_edit( $content, $richedit = false ) { return $content; } -/** - * Holder for the 'format_to_post' filter. - * - * @since 0.71 - * - * @param string $content The text to pass through the filter. - * @return string Text returned from the 'format_to_post' filter. - */ -function format_to_post($content) { - /** - * Filter the string returned by format_to_post(). - * - * @since 1.2.0 - * - * @param string $content The string to format. - */ - $content = apply_filters( 'format_to_post', $content ); - return $content; -} - /** * Add leading zeros when necessary. * @@ -1466,35 +1772,34 @@ function backslashit($string) { /** * Appends a trailing slash. * - * Will remove trailing slash if it exists already before adding a trailing - * slash. This prevents double slashing a string or path. + * Will remove trailing forward and backslashes if it exists already before adding + * a trailing forward slash. This prevents double slashing a string or path. * * The primary use of this is for paths and thus should be used for paths. It is * not restricted to paths and offers no specific path support. * * @since 1.2.0 - * @uses untrailingslashit() Unslashes string if it was slashed already. * * @param string $string What to add the trailing slash to. * @return string String with trailing slash added. */ -function trailingslashit($string) { - return untrailingslashit($string) . '/'; +function trailingslashit( $string ) { + return untrailingslashit( $string ) . '/'; } /** - * Removes trailing slash if it exists. + * Removes trailing forward slashes and backslashes if they exist. * * The primary use of this is for paths and thus should be used for paths. It is * not restricted to paths and offers no specific path support. * * @since 2.2.0 * - * @param string $string What to remove the trailing slash from. - * @return string String without the trailing slash. + * @param string $string What to remove the trailing slashes from. + * @return string String without the trailing slashes. */ -function untrailingslashit($string) { - return rtrim($string, '/'); +function untrailingslashit( $string ) { + return rtrim( $string, '/\\' ); } /** @@ -1578,7 +1883,7 @@ function rawurlencode_deep( $value ) { */ function antispambot( $email_address, $hex_encoding = 0 ) { $email_no_spam_address = ''; - for ( $i = 0; $i < strlen( $email_address ); $i++ ) { + for ( $i = 0, $len = strlen( $email_address ); $i < $len; $i++ ) { $j = rand( 0, 1 + $hex_encoding ); if ( $j == 0 ) { $email_no_spam_address .= '&#' . ord( $email_address[$i] ) . ';'; @@ -1742,7 +2047,7 @@ function make_clickable( $text ) { } // Cleanup of accidental links within links - $r = preg_replace( '#(<a( [^>]+?>|>))<a [^>]+?>([^>]+?)</a></a>#i', "$1$3</a>", $r ); + $r = preg_replace( '#(<a([ \r\n\t]+[^>]+?>|>))<a [^>]+?>([^>]+?)</a></a>#i', "$1$3</a>", $r ); return $r; } @@ -1756,19 +2061,17 @@ function make_clickable( $text ) { * * Input string must have no null characters (or eventual transformations on output chunks must not care about null characters) * - * <code> - * _split_str_by_whitespace( "1234 67890 1234 67890a cd 1234 890 123456789 1234567890a 45678 1 3 5 7 90 ", 10 ) == - * array ( - * 0 => '1234 67890 ', // 11 characters: Perfect split - * 1 => '1234 ', // 5 characters: '1234 67890a' was too long - * 2 => '67890a cd ', // 10 characters: '67890a cd 1234' was too long - * 3 => '1234 890 ', // 11 characters: Perfect split - * 4 => '123456789 ', // 10 characters: '123456789 1234567890a' was too long - * 5 => '1234567890a ', // 12 characters: Too long, but no inner whitespace on which to split - * 6 => ' 45678 ', // 11 characters: Perfect split - * 7 => '1 3 5 7 9', // 9 characters: End of $string - * ); - * </code> + * _split_str_by_whitespace( "1234 67890 1234 67890a cd 1234 890 123456789 1234567890a 45678 1 3 5 7 90 ", 10 ) == + * array ( + * 0 => '1234 67890 ', // 11 characters: Perfect split + * 1 => '1234 ', // 5 characters: '1234 67890a' was too long + * 2 => '67890a cd ', // 10 characters: '67890a cd 1234' was too long + * 3 => '1234 890 ', // 11 characters: Perfect split + * 4 => '123456789 ', // 10 characters: '123456789 1234567890a' was too long + * 5 => '1234567890a ', // 12 characters: Too long, but no inner whitespace on which to split + * 6 => ' 45678 ', // 11 characters: Perfect split + * 7 => '1 3 5 7 90 ', // 11 characters: End of $string + * ); * * @since 3.4.0 * @access private @@ -1842,7 +2145,7 @@ function wp_rel_nofollow_callback( $matches ) { * * Callback handler for {@link convert_smilies()}. * Looks up one smiley code in the $wpsmiliestrans global array and returns an - * <img> string for that smiley. + * `<img>` string for that smiley. * * @global array $wpsmiliestrans * @since 2.8.0 @@ -1859,6 +2162,15 @@ function translate_smiley( $matches ) { $smiley = trim( reset( $matches ) ); $img = $wpsmiliestrans[ $smiley ]; + $matches = array(); + $ext = preg_match( '/\.([^.]+)$/', $img, $matches ) ? strtolower( $matches[1] ) : false; + $image_exts = array( 'jpg', 'jpeg', 'jpe', 'gif', 'png' ); + + // Don't convert smilies that aren't images - they're probably emoji. + if ( ! in_array( $ext, $image_exts ) ) { + return $img; + } + /** * Filter the Smiley image URL before it's used in the image element. * @@ -1870,7 +2182,7 @@ function translate_smiley( $matches ) { */ $src_url = apply_filters( 'smilies_src', includes_url( "images/smilies/$img" ), $img, site_url() ); - return sprintf( ' <img src="%s" alt="%s" class="wp-smiley" /> ', esc_url( $src_url ), esc_attr( $smiley ) ); + return sprintf( '<img src="%s" alt="%s" class="wp-smiley" style="height: 1em; max-height: 1em;" />', esc_url( $src_url ), esc_attr( $smiley ) ); } /** @@ -2042,7 +2354,7 @@ function wp_iso_descrambler($string) { * @access private * * @param array $match The preg_replace_callback matches array - * @return array Converted chars + * @return string Converted chars */ function _wp_iso_convert( $match ) { return chr( hexdec( strtolower( $match[1] ) ) ); @@ -2058,7 +2370,6 @@ function _wp_iso_convert( $match ) { * * @since 1.2.0 * - * @uses get_option() to retrieve the value of 'gmt_offset'. * @param string $string The date to be converted. * @param string $format The format string for the returned date (default is Y-m-d H:i:s) * @return string GMT version of the date provided. @@ -2159,7 +2470,7 @@ function iso8601_to_datetime($date_string, $timezone = 'user') { return gmdate('Y-m-d H:i:s', $timestamp); - } else if ($timezone == 'user') { + } elseif ($timezone == 'user') { return preg_replace('#([0-9]{4})([0-9]{2})([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})(Z|[\+|\-][0-9]{2,4}){0,1}#', '$1-$2-$3 $4:$5:$6', $date_string); } } @@ -2296,8 +2607,9 @@ function sanitize_email( $email ) { * @return string Human readable time difference. */ function human_time_diff( $from, $to = '' ) { - if ( empty( $to ) ) + if ( empty( $to ) ) { $to = time(); + } $diff = (int) abs( $to - $from ); @@ -2334,7 +2646,17 @@ function human_time_diff( $from, $to = '' ) { $since = sprintf( _n( '%s year', '%s years', $years ), $years ); } - return $since; + /** + * Filter the human readable difference between two timestamps. + * + * @since 4.0.0 + * + * @param string $since The difference in human readable text. + * @param int $diff The difference in seconds. + * @param int $from Unix timestamp from which the difference begins. + * @param int $to Unix timestamp to end the time difference. + */ + return apply_filters( 'human_time_diff', $since, $diff, $from, $to ); } /** @@ -2840,8 +3162,6 @@ function esc_sql( $data ) { * is applied to the returned cleaned URL. * * @since 2.8.0 - * @uses wp_kses_bad_protocol() To only permit protocols in the URL set - * via $protocols or the common ones set in the function. * * @param string $url The URL to be cleaned. * @param array $protocols Optional. An array of acceptable protocols. @@ -2899,7 +3219,6 @@ function esc_url( $url, $protocols = null, $_context = 'display' ) { * Performs esc_url() for database usage. * * @since 2.8.0 - * @uses esc_url() * * @param string $url The URL to be cleaned. * @param array $protocols An array of acceptable protocols. @@ -3049,18 +3368,6 @@ function tag_escape($tag_name) { return apply_filters( 'tag_escape', $safe_tag, $tag_name ); } -/** - * Escapes text for SQL LIKE special characters % and _. - * - * @since 2.5.0 - * - * @param string $text The text to be escaped. - * @return string text, safe for inclusion in LIKE query. - */ -function like_escape($text) { - return str_replace(array("%", "_"), array("\\%", "\\_"), $text); -} - /** * Convert full URL paths to absolute paths. * @@ -3068,12 +3375,13 @@ function like_escape($text) { * beginning, so it isn't a true relative link, but from the web root base. * * @since 2.1.0 + * @since 4.1.0 Support was added for relative URLs. * * @param string $link Full URL path. * @return string Absolute path. */ function wp_make_link_relative( $link ) { - return preg_replace( '|https?://[^/]+(/.*)|i', '$1', $link ); + return preg_replace( '|^(https?:)?//[^/]+(/.*)|i', '$2', $link ); } /** @@ -3089,15 +3397,20 @@ function wp_make_link_relative( $link ) { * @return string Sanitized value. */ function sanitize_option($option, $value) { + global $wpdb; + $error = ''; switch ( $option ) { case 'admin_email' : case 'new_admin_email' : - $value = sanitize_email( $value ); - if ( ! is_email( $value ) ) { - $value = get_option( $option ); // Resets option to stored value in the case of failed sanitization - if ( function_exists( 'add_settings_error' ) ) - add_settings_error( $option, 'invalid_admin_email', __( 'The email address entered did not appear to be a valid email address. Please enter a valid email address.' ) ); + $value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value ); + if ( is_wp_error( $value ) ) { + $error = $value->get_error_message(); + } else { + $value = sanitize_email( $value ); + if ( ! is_email( $value ) ) { + $error = __( 'The email address entered did not appear to be a valid email address. Please enter a valid email address.' ); + } } break; @@ -3141,8 +3454,13 @@ function sanitize_option($option, $value) { case 'blogdescription': case 'blogname': - $value = wp_kses_post( $value ); - $value = esc_html( $value ); + $value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value ); + if ( is_wp_error( $value ) ) { + $error = $value->get_error_message(); + } else { + $value = wp_kses_post( $value ); + $value = esc_html( $value ); + } break; case 'blog_charset': @@ -3163,8 +3481,13 @@ function sanitize_option($option, $value) { case 'mailserver_login': case 'mailserver_pass': case 'upload_path': - $value = strip_tags( $value ); - $value = wp_kses_data( $value ); + $value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value ); + if ( is_wp_error( $value ) ) { + $error = $value->get_error_message(); + } else { + $value = strip_tags( $value ); + $value = wp_kses_data( $value ); + } break; case 'ping_sites': @@ -3179,77 +3502,121 @@ function sanitize_option($option, $value) { break; case 'siteurl': - if ( (bool)preg_match( '#http(s?)://(.+)#i', $value) ) { - $value = esc_url_raw($value); + $value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value ); + if ( is_wp_error( $value ) ) { + $error = $value->get_error_message(); } else { - $value = get_option( $option ); // Resets option to stored value in the case of failed sanitization - if ( function_exists('add_settings_error') ) - add_settings_error('siteurl', 'invalid_siteurl', __('The WordPress address you entered did not appear to be a valid URL. Please enter a valid URL.')); + if ( preg_match( '#http(s?)://(.+)#i', $value ) ) { + $value = esc_url_raw( $value ); + } else { + $error = __( 'The WordPress address you entered did not appear to be a valid URL. Please enter a valid URL.' ); + } } break; case 'home': - if ( (bool)preg_match( '#http(s?)://(.+)#i', $value) ) { - $value = esc_url_raw($value); + $value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value ); + if ( is_wp_error( $value ) ) { + $error = $value->get_error_message(); } else { - $value = get_option( $option ); // Resets option to stored value in the case of failed sanitization - if ( function_exists('add_settings_error') ) - add_settings_error('home', 'invalid_home', __('The Site address you entered did not appear to be a valid URL. Please enter a valid URL.')); + if ( preg_match( '#http(s?)://(.+)#i', $value ) ) { + $value = esc_url_raw( $value ); + } else { + $error = __( 'The Site address you entered did not appear to be a valid URL. Please enter a valid URL.' ); + } } break; case 'WPLANG': $allowed = get_available_languages(); - if ( ! in_array( $value, $allowed ) && ! empty( $value ) ) + if ( ! is_multisite() && defined( 'WPLANG' ) && '' !== WPLANG && 'en_US' !== WPLANG ) { + $allowed[] = WPLANG; + } + if ( ! in_array( $value, $allowed ) && ! empty( $value ) ) { $value = get_option( $option ); + } break; case 'illegal_names': - if ( ! is_array( $value ) ) - $value = explode( ' ', $value ); + $value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value ); + if ( is_wp_error( $value ) ) { + $error = $value->get_error_message(); + } else { + if ( ! is_array( $value ) ) + $value = explode( ' ', $value ); - $value = array_values( array_filter( array_map( 'trim', $value ) ) ); + $value = array_values( array_filter( array_map( 'trim', $value ) ) ); - if ( ! $value ) - $value = ''; + if ( ! $value ) + $value = ''; + } break; case 'limited_email_domains': case 'banned_email_domains': - if ( ! is_array( $value ) ) - $value = explode( "\n", $value ); + $value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value ); + if ( is_wp_error( $value ) ) { + $error = $value->get_error_message(); + } else { + if ( ! is_array( $value ) ) + $value = explode( "\n", $value ); - $domains = array_values( array_filter( array_map( 'trim', $value ) ) ); - $value = array(); + $domains = array_values( array_filter( array_map( 'trim', $value ) ) ); + $value = array(); - foreach ( $domains as $domain ) { - if ( ! preg_match( '/(--|\.\.)/', $domain ) && preg_match( '|^([a-zA-Z0-9-\.])+$|', $domain ) ) - $value[] = $domain; + foreach ( $domains as $domain ) { + if ( ! preg_match( '/(--|\.\.)/', $domain ) && preg_match( '|^([a-zA-Z0-9-\.])+$|', $domain ) ) { + $value[] = $domain; + } + } + if ( ! $value ) + $value = ''; } - if ( ! $value ) - $value = ''; break; case 'timezone_string': $allowed_zones = timezone_identifiers_list(); if ( ! in_array( $value, $allowed_zones ) && ! empty( $value ) ) { - $value = get_option( $option ); // Resets option to stored value in the case of failed sanitization - if ( function_exists('add_settings_error') ) - add_settings_error('timezone_string', 'invalid_timezone_string', __('The timezone you have entered is not valid. Please select a valid timezone.') ); + $error = __( 'The timezone you have entered is not valid. Please select a valid timezone.' ); } break; case 'permalink_structure': case 'category_base': case 'tag_base': - $value = esc_url_raw( $value ); - $value = str_replace( 'http://', '', $value ); + $value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value ); + if ( is_wp_error( $value ) ) { + $error = $value->get_error_message(); + } else { + $value = esc_url_raw( $value ); + $value = str_replace( 'http://', '', $value ); + } break; case 'default_role' : if ( ! get_role( $value ) && get_role( 'subscriber' ) ) $value = 'subscriber'; break; + + case 'moderation_keys': + case 'blacklist_keys': + $value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value ); + if ( is_wp_error( $value ) ) { + $error = $value->get_error_message(); + } else { + $value = explode( "\n", $value ); + $value = array_filter( array_map( 'trim', $value ) ); + $value = array_unique( $value ); + $value = implode( "\n", $value ); + } + break; + } + + if ( ! empty( $error ) ) { + $value = get_option( $option ); + if ( function_exists( 'add_settings_error' ) ) { + add_settings_error( $option, "invalid_{$option}", $error ); + } } /** @@ -3295,7 +3662,6 @@ function wp_parse_str( $string, &$array ) { * * KSES already converts lone greater than signs. * - * @uses wp_pre_kses_less_than_callback in the callback function. * @since 2.3.0 * * @param string $text Text to be converted. @@ -3308,7 +3674,6 @@ function wp_pre_kses_less_than( $text ) { /** * Callback function used by preg_replace. * - * @uses esc_html to format the $matches text. * @since 2.3.0 * * @param array $matches Populated by matches to preg_replace. @@ -3327,7 +3692,7 @@ function wp_pre_kses_less_than_callback( $matches ) { * @link http://www.php.net/sprintf * * @param string $pattern The string which formatted args are inserted. - * @param mixed $args,... Arguments to be formatted into the $pattern string. + * @param mixed $args ,... Arguments to be formatted into the $pattern string. * @return string The formatted string. */ function wp_sprintf( $pattern ) { @@ -3415,6 +3780,8 @@ function wp_sprintf_l($pattern, $args) { /** * Filter the translated delimiters used by wp_sprintf_l(). + * Placeholders (%s) are included to assist translators and then + * removed before the array of strings reaches the filter. * * Please note: Ampersands and entities should be avoided here. * @@ -3423,12 +3790,12 @@ function wp_sprintf_l($pattern, $args) { * @param array $delimiters An array of translated delimiters. */ $l = apply_filters( 'wp_sprintf_l', array( - /* translators: used between list items, there is a space after the comma */ - 'between' => __(', '), - /* translators: used between list items, there is a space after the and */ - 'between_last_two' => __(', and '), - /* translators: used between only two list items, there is a space after the and */ - 'between_only_two' => __(' and '), + /* translators: used to join items in a list with more than 2 items */ + 'between' => sprintf( __('%s, %s'), '', '' ), + /* translators: used to join last two items in a list with more than 2 times */ + 'between_last_two' => sprintf( __('%s, and %s'), '', '' ), + /* translators: used to join items in a list with only 2 items */ + 'between_only_two' => sprintf( __('%s and %s'), '', '' ), ) ); $args = (array) $args; @@ -3509,17 +3876,18 @@ function _links_add_base($m) { return $m[1] . '=' . $m[2] . ( preg_match( '#^(\w{1,20}):#', $m[3], $protocol ) && in_array( $protocol[1], wp_allowed_protocols() ) ? $m[3] : - path_join( $_links_add_base, $m[3] ) ) + WP_HTTP::make_absolute_url( $m[3], $_links_add_base ) + ) . $m[2]; } /** * Adds a Target attribute to all links in passed content. * - * This function by default only applies to <a> tags, however this can be + * This function by default only applies to `<a>` tags, however this can be * modified by the 3rd param. * - * <b>NOTE:</b> Any current target attributed will be stripped and replaced. + * *NOTE:* Any current target attributed will be stripped and replaced. * * @since 2.7.0 * @@ -3569,6 +3937,10 @@ function normalize_whitespace( $str ) { /** * Properly strip all HTML tags including script and style * + * This differs from strip_tags() because it removes the contents of + * the `<script>` and `<style>` tags. E.g. `strip_tags( '<script>something</script>' )` + * will return 'something'. wp_strip_all_tags will return '' + * * @since 2.9.0 * * @param string $string String containing HTML tags @@ -3770,11 +4142,345 @@ function wp_unslash( $value ) { * @return string The found URL. */ function get_url_in_content( $content ) { - if ( empty( $content ) ) - return ''; + if ( empty( $content ) ) { + return false; + } - if ( preg_match( '/<a\s[^>]*?href=([\'"])(.+?)\1/is', $content, $matches ) ) + if ( preg_match( '/<a\s[^>]*?href=([\'"])(.+?)\1/is', $content, $matches ) ) { return esc_url_raw( $matches[2] ); + } return false; } + +/** + * Returns the regexp for common whitespace characters. + * + * By default, spaces include new lines, tabs, nbsp entities, and the UTF-8 nbsp. + * This is designed to replace the PCRE \s sequence. In ticket #22692, that + * sequence was found to be unreliable due to random inclusion of the A0 byte. + * + * @since 4.0.0 + * + * @return string The spaces regexp. + */ +function wp_spaces_regexp() { + static $spaces; + + if ( empty( $spaces ) ) { + /** + * Filter the regexp for common whitespace characters. + * + * This string is substituted for the \s sequence as needed in regular + * expressions. For websites not written in English, different characters + * may represent whitespace. For websites not encoded in UTF-8, the 0xC2 0xA0 + * sequence may not be in use. + * + * @since 4.0.0 + * + * @param string $spaces Regexp pattern for matching common whitespace characters. + */ + $spaces = apply_filters( 'wp_spaces_regexp', '[\r\n\t ]|\xC2\xA0| ' ); + } + + return $spaces; +} + +/** + * Print the important emoji-related styles. + * + * @since 4.2.0 + */ +function print_emoji_styles() { + static $printed = false; + + if ( $printed ) { + return; + } + + $printed = true; +?> +<style type="text/css"> +img.wp-smiley, +img.emoji { + display: inline !important; + border: none !important; + box-shadow: none !important; + height: 1em !important; + width: 1em !important; + margin: 0 .07em !important; + vertical-align: -0.1em !important; + background: none !important; + padding: 0 !important; +} +</style> +<?php +} + +function print_emoji_detection_script() { + global $wp_version; + static $printed = false; + + if ( $printed ) { + return; + } + + $printed = true; + + $settings = array( + /** + * Filter the URL where emoji images are hosted. + * + * @since 4.2.0 + * + * @param string The emoji base URL. + */ + 'baseUrl' => apply_filters( 'emoji_url', set_url_scheme( '//s.w.org/images/core/emoji/72x72/' ) ), + + /** + * Filter the extension of the emoji files. + * + * @since 4.2.0 + * + * @param string The emoji extension. Default .png. + */ + 'ext' => apply_filters( 'emoji_ext', '.png' ), + ); + + $version = 'ver=' . $wp_version; + $develop_src = false !== strpos( $wp_version, '-src' ); + + if ( $develop_src || ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) ) { + $settings['source'] = array( + /** This filter is documented in wp-includes/class.wp-scripts.php */ + 'wpemoji' => apply_filters( 'script_loader_src', includes_url( "js/wp-emoji.js?$version" ), 'wpemoji' ), + /** This filter is documented in wp-includes/class.wp-scripts.php */ + 'twemoji' => apply_filters( 'script_loader_src', includes_url( "js/twemoji.js?$version" ), 'twemoji' ), + ); + + ?> + <script type="text/javascript"> + window._wpemojiSettings = <?php echo wp_json_encode( $settings ); ?>; + <?php readfile( ABSPATH . WPINC . "/js/wp-emoji-loader.js" ); ?> + </script> + <?php + } else { + $settings['source'] = array( + /** This filter is documented in wp-includes/class.wp-scripts.php */ + 'concatemoji' => apply_filters( 'script_loader_src', includes_url( "js/wp-emoji-release.min.js?$version" ), 'concatemoji' ), + ); + + /* + * If you're looking at a src version of this file, you'll see an "include" + * statement below. This is used by the `grunt build` process to directly + * include a minified version of wp-emoji-loader.js, instead of using the + * readfile() method from above. + * + * If you're looking at a build version of this file, you'll see a string of + * minified JavaScript. If you need to debug it, please turn on SCRIPT_DEBUG + * and edit wp-emoji-loader.js directly. + */ + ?> + <script type="text/javascript"> + window._wpemojiSettings = <?php echo wp_json_encode( $settings ); ?>; + !function(a,b,c){function d(a){var c=b.createElement("canvas"),d=c.getContext&&c.getContext("2d");return d&&d.fillText?(d.textBaseline="top",d.font="600 32px Arial","flag"===a?(d.fillText(String.fromCharCode(55356,56812,55356,56807),0,0),c.toDataURL().length>3e3):(d.fillText(String.fromCharCode(55357,56835),0,0),0!==d.getImageData(16,16,1,1).data[0])):!1}function e(a){var c=b.createElement("script");c.src=a,c.type="text/javascript",b.getElementsByTagName("head")[0].appendChild(c)}var f,g;c.supports={simple:d("simple"),flag:d("flag")},c.DOMReady=!1,c.readyCallback=function(){c.DOMReady=!0},c.supports.simple&&c.supports.flag||(g=function(){c.readyCallback()},b.addEventListener?(b.addEventListener("DOMContentLoaded",g,!1),a.addEventListener("load",g,!1)):(a.attachEvent("onload",g),b.attachEvent("onreadystatechange",function(){"complete"===b.readyState&&c.readyCallback()})),f=c.source||{},f.concatemoji?e(f.concatemoji):f.wpemoji&&f.twemoji&&(e(f.twemoji),e(f.wpemoji)))}(window,document,window._wpemojiSettings); + </script> + <?php + } +} + +/** + * Convert any 4 byte emoji in a string to their equivalent HTML entity. + * + * Currently, only Unicode 7 emoji are supported. Skin tone modifiers are allowed, + * all other Unicode 8 emoji will be added when the spec is finalised. + * + * This allows us to store emoji in a DB using the utf8 character set. + * + * @since 4.2.0 + * + * @param string $content The content to encode. + * @return string The encoded content. + */ +function wp_encode_emoji( $content ) { + if ( function_exists( 'mb_convert_encoding' ) ) { + $regex = '/( + \x23\xE2\x83\xA3 # Digits + [\x30-\x39]\xE2\x83\xA3 + | \xF0\x9F[\x85-\x88][\xA6-\xBF] # Enclosed characters + | \xF0\x9F[\x8C-\x97][\x80-\xBF] # Misc + | \xF0\x9F\x98[\x80-\xBF] # Smilies + | \xF0\x9F\x99[\x80-\x8F] + | \xF0\x9F\x9A[\x80-\xBF] # Transport and map symbols + )/x'; + + $matches = array(); + if ( preg_match_all( $regex, $content, $matches ) ) { + if ( ! empty( $matches[1] ) ) { + foreach( $matches[1] as $emoji ) { + /* + * UTF-32's hex encoding is the same as HTML's hex encoding. + * So, by converting the emoji from UTF-8 to UTF-32, we magically + * get the correct hex encoding. + */ + $unpacked = unpack( 'H*', mb_convert_encoding( $emoji, 'UTF-32', 'UTF-8' ) ); + if ( isset( $unpacked[1] ) ) { + $entity = '&#x' . ltrim( $unpacked[1], '0' ) . ';'; + $content = str_replace( $emoji, $entity, $content ); + } + } + } + } + } + + return $content; +} + +/** + * Convert emoji to a static img element. + * + * @since 4.2.0 + * + * @param string $text The content to encode. + * @return string The encoded content. + */ +function wp_staticize_emoji( $text ) { + $text = wp_encode_emoji( $text ); + + /** This filter is documented in wp-includes/formatting.php */ + $cdn_url = apply_filters( 'emoji_url', set_url_scheme( '//s.w.org/images/core/emoji/72x72/' ) ); + + /** This filter is documented in wp-includes/formatting.php */ + $ext = apply_filters( 'emoji_ext', '.png' ); + + $output = ''; + /* + * HTML loop taken from smiley function, which was taken from texturize function. + * It'll never be consolidated. + * + * First, capture the tags as well as in between. + */ + $textarr = preg_split( '/(<.*>)/U', $text, -1, PREG_SPLIT_DELIM_CAPTURE ); + $stop = count( $textarr ); + + // Ignore processing of specific tags. + $tags_to_ignore = 'code|pre|style|script|textarea'; + $ignore_block_element = ''; + + for ( $i = 0; $i < $stop; $i++ ) { + $content = $textarr[$i]; + + // If we're in an ignore block, wait until we find its closing tag. + if ( '' == $ignore_block_element && preg_match( '/^<(' . $tags_to_ignore . ')>/', $content, $matches ) ) { + $ignore_block_element = $matches[1]; + } + + // If it's not a tag and not in ignore block. + if ( '' == $ignore_block_element && strlen( $content ) > 0 && '<' != $content[0] ) { + $matches = array(); + if ( preg_match_all( '/(DZ(e[6-9a-f]|f[0-9a-f]);){2}/', $content, $matches ) ) { + if ( ! empty( $matches[0] ) ) { + foreach ( $matches[0] as $flag ) { + $chars = str_replace( array( '&#x', ';'), '', $flag ); + + list( $char1, $char2 ) = str_split( $chars, 5 ); + $entity = sprintf( '<img src="%s" alt="%s" class="wp-smiley" style="height: 1em; max-height: 1em;" />', $cdn_url . $char1 . '-' . $char2 . $ext, html_entity_decode( $flag ) ); + + $content = str_replace( $flag, $entity, $content ); + } + } + } + + // Loosely match the Emoji Unicode range. + $regex = '/(&#x[2-3][0-9a-f]{3};|[1-6][0-9a-f]{2};)/'; + + $matches = array(); + if ( preg_match_all( $regex, $content, $matches ) ) { + if ( ! empty( $matches[1] ) ) { + foreach ( $matches[1] as $emoji ) { + $char = str_replace( array( '&#x', ';'), '', $emoji ); + $entity = sprintf( '<img src="%s" alt="%s" class="wp-smiley" style="height: 1em; max-height: 1em;" />', $cdn_url . $char . $ext, html_entity_decode( $emoji ) ); + + $content = str_replace( $emoji, $entity, $content ); + } + } + } + } + + // Did we exit ignore block. + if ( '' != $ignore_block_element && '</' . $ignore_block_element . '>' == $content ) { + $ignore_block_element = ''; + } + + $output .= $content; + } + + return $output; +} + +/** + * Convert emoji in emails into static images. + * + * @since 4.2.0 + * + * @param array $mail The email data array. + * @return array The email data array, with emoji in the message staticized. + */ +function wp_staticize_emoji_for_email( $mail ) { + if ( ! isset( $mail['message'] ) ) { + return $mail; + } + + /* + * We can only transform the emoji into images if it's a text/html email. + * To do that, here's a cut down version of the same process that happens + * in wp_mail() - get the Content-Type from the headers, if there is one, + * then pass it through the wp_mail_content_type filter, in case a plugin + * is handling changing the Content-Type. + */ + $headers = array(); + if ( isset( $mail['headers'] ) ) { + if ( is_array( $mail['headers'] ) ) { + $headers = $mail['headers']; + } else { + $headers = explode( "\n", str_replace( "\r\n", "\n", $mail['headers'] ) ); + } + } + + foreach ( $headers as $header ) { + if ( strpos($header, ':') === false ) { + continue; + } + + // Explode them out. + list( $name, $content ) = explode( ':', trim( $header ), 2 ); + + // Cleanup crew. + $name = trim( $name ); + $content = trim( $content ); + + if ( 'content-type' === strtolower( $name ) ) { + if ( strpos( $content, ';' ) !== false ) { + list( $type, $charset ) = explode( ';', $content ); + $content_type = trim( $type ); + } else { + $content_type = trim( $content ); + } + break; + } + } + + // Set Content-Type if we don't have a content-type from the input headers. + if ( ! isset( $content_type ) ) { + $content_type = 'text/plain'; + } + + /** This filter is documented in wp-includes/pluggable.php */ + $content_type = apply_filters( 'wp_mail_content_type', $content_type ); + + if ( 'text/html' === $content_type ) { + $mail['message'] = wp_staticize_emoji( $mail['message'] ); + } + + return $mail; +}