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<?php |
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/** |
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* Main WordPress Formatting API. |
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* |
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* Handles many functions for formatting output. |
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* |
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* @package WordPress |
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*/ |
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/** |
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* Replaces common plain text characters into formatted entities |
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* |
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* As an example, |
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* |
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* 'cause today's effort makes it worth tomorrow's "holiday" ... |
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* |
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* Becomes: |
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* |
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* ’cause today’s effort makes it worth tomorrow’s “holiday” … |
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* |
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* Code within certain html blocks are skipped. |
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* |
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* @since 0.71 |
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* @uses $wp_cockneyreplace Array of formatted entities for certain common phrases |
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* |
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* @param string $text The text to be formatted |
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* @param bool $reset Set to true for unit testing. Translated patterns will reset. |
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* @return string The string replaced with html entities |
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*/ |
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function wptexturize($text, $reset = false) { |
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global $wp_cockneyreplace, $shortcode_tags; |
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static $static_characters, $static_replacements, $dynamic_characters, $dynamic_replacements, |
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$default_no_texturize_tags, $default_no_texturize_shortcodes, $run_texturize = true; |
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// If there's nothing to do, just stop. |
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if ( empty( $text ) || false === $run_texturize ) { |
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return $text; |
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} |
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// Set up static variables. Run once only. |
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if ( $reset || ! isset( $static_characters ) ) { |
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/** |
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* Filter whether to skip running wptexturize(). |
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* |
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* Passing false to the filter will effectively short-circuit wptexturize(). |
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* returning the original text passed to the function instead. |
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* |
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* The filter runs only once, the first time wptexturize() is called. |
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* |
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* @since 4.0.0 |
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* |
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* @see wptexturize() |
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* |
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* @param bool $run_texturize Whether to short-circuit wptexturize(). |
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*/ |
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$run_texturize = apply_filters( 'run_wptexturize', $run_texturize ); |
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if ( false === $run_texturize ) { |
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return $text; |
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} |
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/* translators: opening curly double quote */ |
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$opening_quote = _x( '“', 'opening curly double quote' ); |
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/* translators: closing curly double quote */ |
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$closing_quote = _x( '”', 'closing curly double quote' ); |
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/* translators: apostrophe, for example in 'cause or can't */ |
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$apos = _x( '’', 'apostrophe' ); |
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/* translators: prime, for example in 9' (nine feet) */ |
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$prime = _x( '′', 'prime' ); |
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/* translators: double prime, for example in 9" (nine inches) */ |
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$double_prime = _x( '″', 'double prime' ); |
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/* translators: opening curly single quote */ |
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$opening_single_quote = _x( '‘', 'opening curly single quote' ); |
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/* translators: closing curly single quote */ |
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$closing_single_quote = _x( '’', 'closing curly single quote' ); |
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/* translators: en dash */ |
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$en_dash = _x( '–', 'en dash' ); |
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/* translators: em dash */ |
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$em_dash = _x( '—', 'em dash' ); |
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$default_no_texturize_tags = array('pre', 'code', 'kbd', 'style', 'script', 'tt'); |
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$default_no_texturize_shortcodes = array('code'); |
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// if a plugin has provided an autocorrect array, use it |
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if ( isset($wp_cockneyreplace) ) { |
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$cockney = array_keys( $wp_cockneyreplace ); |
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$cockneyreplace = array_values( $wp_cockneyreplace ); |
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} elseif ( "'" != $apos ) { // Only bother if we're doing a replacement. |
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$cockney = array( "'tain't", "'twere", "'twas", "'tis", "'twill", "'til", "'bout", "'nuff", "'round", "'cause", "'em" ); |
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$cockneyreplace = array( $apos . "tain" . $apos . "t", $apos . "twere", $apos . "twas", $apos . "tis", $apos . "twill", $apos . "til", $apos . "bout", $apos . "nuff", $apos . "round", $apos . "cause", $apos . "em" ); |
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} else { |
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$cockney = $cockneyreplace = array(); |
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} |
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$static_characters = array_merge( array( '...', '``', '\'\'', ' (tm)' ), $cockney ); |
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$static_replacements = array_merge( array( '…', $opening_quote, $closing_quote, ' ™' ), $cockneyreplace ); |
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// Pattern-based replacements of characters. |
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// Sort the remaining patterns into several arrays for performance tuning. |
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$dynamic_characters = array( 'apos' => array(), 'quote' => array(), 'dash' => array() ); |
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$dynamic_replacements = array( 'apos' => array(), 'quote' => array(), 'dash' => array() ); |
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$dynamic = array(); |
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$spaces = wp_spaces_regexp(); |
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// '99' and '99" are ambiguous among other patterns; assume it's an abbreviated year at the end of a quotation. |
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if ( "'" !== $apos || "'" !== $closing_single_quote ) { |
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$dynamic[ '/\'(\d\d)\'(?=\Z|[.,)}\-\]]|>|' . $spaces . ')/' ] = $apos . '$1' . $closing_single_quote; |
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} |
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if ( "'" !== $apos || '"' !== $closing_quote ) { |
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$dynamic[ '/\'(\d\d)"(?=\Z|[.,)}\-\]]|>|' . $spaces . ')/' ] = $apos . '$1' . $closing_quote; |
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} |
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// '99 '99s '99's (apostrophe) But never '9 or '99% or '999 or '99.0. |
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if ( "'" !== $apos ) { |
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$dynamic[ '/\'(?=\d\d(?:\Z|(?![%\d]|[.,]\d)))/' ] = $apos; |
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} |
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// Quoted Numbers like '0.42' |
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if ( "'" !== $opening_single_quote && "'" !== $closing_single_quote ) { |
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$dynamic[ '/(?<=\A|' . $spaces . ')\'(\d[.,\d]*)\'/' ] = $opening_single_quote . '$1' . $closing_single_quote; |
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} |
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// Single quote at start, or preceded by (, {, <, [, ", -, or spaces. |
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if ( "'" !== $opening_single_quote ) { |
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$dynamic[ '/(?<=\A|[([{"\-]|<|' . $spaces . ')\'/' ] = $opening_single_quote; |
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} |
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// Apostrophe in a word. No spaces, double apostrophes, or other punctuation. |
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if ( "'" !== $apos ) { |
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$dynamic[ '/(?<!' . $spaces . ')\'(?!\Z|[.,:;"\'(){}[\]\-]|&[lg]t;|' . $spaces . ')/' ] = $apos; |
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} |
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// 9' (prime) |
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if ( "'" !== $prime ) { |
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$dynamic[ '/(?<=\d)\'/' ] = $prime; |
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} |
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// Single quotes followed by spaces or ending punctuation. |
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if ( "'" !== $closing_single_quote ) { |
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$dynamic[ '/\'(?=\Z|[.,)}\-\]]|>|' . $spaces . ')/' ] = $closing_single_quote; |
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} |
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$dynamic_characters['apos'] = array_keys( $dynamic ); |
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$dynamic_replacements['apos'] = array_values( $dynamic ); |
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$dynamic = array(); |
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// Quoted Numbers like "42" |
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if ( '"' !== $opening_quote && '"' !== $closing_quote ) { |
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$dynamic[ '/(?<=\A|' . $spaces . ')"(\d[.,\d]*)"/' ] = $opening_quote . '$1' . $closing_quote; |
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} |
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// 9" (double prime) |
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if ( '"' !== $double_prime ) { |
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$dynamic[ '/(?<=\d)"/' ] = $double_prime; |
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} |
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// Double quote at start, or preceded by (, {, <, [, -, or spaces, and not followed by spaces. |
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if ( '"' !== $opening_quote ) { |
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$dynamic[ '/(?<=\A|[([{\-]|<|' . $spaces . ')"(?!' . $spaces . ')/' ] = $opening_quote; |
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} |
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// Any remaining double quotes. |
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if ( '"' !== $closing_quote ) { |
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$dynamic[ '/"/' ] = $closing_quote; |
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} |
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$dynamic_characters['quote'] = array_keys( $dynamic ); |
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$dynamic_replacements['quote'] = array_values( $dynamic ); |
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$dynamic = array(); |
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// Dashes and spaces |
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$dynamic[ '/---/' ] = $em_dash; |
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$dynamic[ '/(?<=^|' . $spaces . ')--(?=$|' . $spaces . ')/' ] = $em_dash; |
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$dynamic[ '/(?<!xn)--/' ] = $en_dash; |
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$dynamic[ '/(?<=^|' . $spaces . ')-(?=$|' . $spaces . ')/' ] = $en_dash; |
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$dynamic_characters['dash'] = array_keys( $dynamic ); |
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$dynamic_replacements['dash'] = array_values( $dynamic ); |
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} |
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// Must do this every time in case plugins use these filters in a context sensitive manner |
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/** |
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* Filter the list of HTML elements not to texturize. |
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* |
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* @since 2.8.0 |
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* |
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* @param array $default_no_texturize_tags An array of HTML element names. |
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*/ |
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$no_texturize_tags = apply_filters( 'no_texturize_tags', $default_no_texturize_tags ); |
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/** |
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* Filter the list of shortcodes not to texturize. |
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* |
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* @since 2.8.0 |
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* |
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* @param array $default_no_texturize_shortcodes An array of shortcode names. |
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*/ |
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$no_texturize_shortcodes = apply_filters( 'no_texturize_shortcodes', $default_no_texturize_shortcodes ); |
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$no_texturize_tags_stack = array(); |
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$no_texturize_shortcodes_stack = array(); |
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// Look for shortcodes and HTML elements. |
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$tagnames = array_keys( $shortcode_tags ); |
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$tagregexp = join( '|', array_map( 'preg_quote', $tagnames ) ); |
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$tagregexp = "(?:$tagregexp)(?![\\w-])"; // Excerpt of get_shortcode_regex(). |
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$comment_regex = |
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'!' // Start of comment, after the <. |
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. '(?:' // Unroll the loop: Consume everything until --> is found. |
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. '-(?!->)' // Dash not followed by end of comment. |
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. '[^\-]*+' // Consume non-dashes. |
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. ')*+' // Loop possessively. |
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. '(?:-->)?'; // End of comment. If not found, match all input. |
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$shortcode_regex = |
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'\[' // Find start of shortcode. |
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. '[\/\[]?' // Shortcodes may begin with [/ or [[ |
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. $tagregexp // Only match registered shortcodes, because performance. |
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. '(?:' |
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. '[^\[\]<>]+' // Shortcodes do not contain other shortcodes. Quantifier critical. |
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. '|' |
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. '<[^\[\]>]*>' // HTML elements permitted. Prevents matching ] before >. |
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. ')*+' // Possessive critical. |
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. '\]' // Find end of shortcode. |
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. '\]?'; // Shortcodes may end with ]] |
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$regex = |
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'/(' // Capture the entire match. |
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. '<' // Find start of element. |
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. '(?(?=!--)' // Is this a comment? |
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. $comment_regex // Find end of comment. |
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. '|' |
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. '[^>]*>' // Find end of element. |
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. ')' |
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. '|' |
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. $shortcode_regex // Find shortcodes. |
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. ')/s'; |
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$textarr = preg_split( $regex, $text, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY ); |
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foreach ( $textarr as &$curl ) { |
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// Only call _wptexturize_pushpop_element if $curl is a delimiter. |
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$first = $curl[0]; |
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if ( '<' === $first && '<!--' === substr( $curl, 0, 4 ) ) { |
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// This is an HTML comment delimeter. |
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continue; |
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} elseif ( '<' === $first && '>' === substr( $curl, -1 ) ) { |
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// This is an HTML element delimiter. |
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_wptexturize_pushpop_element( $curl, $no_texturize_tags_stack, $no_texturize_tags ); |
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} elseif ( '' === trim( $curl ) ) { |
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// This is a newline between delimiters. Performance improves when we check this. |
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continue; |
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} elseif ( '[' === $first && 1 === preg_match( '/^' . $shortcode_regex . '$/', $curl ) ) { |
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// This is a shortcode delimiter. |
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if ( '[[' !== substr( $curl, 0, 2 ) && ']]' !== substr( $curl, -2 ) ) { |
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// Looks like a normal shortcode. |
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_wptexturize_pushpop_element( $curl, $no_texturize_shortcodes_stack, $no_texturize_shortcodes ); |
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} else { |
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// Looks like an escaped shortcode. |
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continue; |
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} |
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} elseif ( empty( $no_texturize_shortcodes_stack ) && empty( $no_texturize_tags_stack ) ) { |
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// This is neither a delimiter, nor is this content inside of no_texturize pairs. Do texturize. |
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$curl = str_replace( $static_characters, $static_replacements, $curl ); |
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if ( false !== strpos( $curl, "'" ) ) { |
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$curl = preg_replace( $dynamic_characters['apos'], $dynamic_replacements['apos'], $curl ); |
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} |
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if ( false !== strpos( $curl, '"' ) ) { |
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$curl = preg_replace( $dynamic_characters['quote'], $dynamic_replacements['quote'], $curl ); |
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} |
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if ( false !== strpos( $curl, '-' ) ) { |
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$curl = preg_replace( $dynamic_characters['dash'], $dynamic_replacements['dash'], $curl ); |
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} |
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// 9x9 (times), but never 0x9999 |
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if ( 1 === preg_match( '/(?<=\d)x\d/', $curl ) ) { |
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// Searching for a digit is 10 times more expensive than for the x, so we avoid doing this one! |
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$curl = preg_replace( '/\b(\d(?(?<=0)[\d\.,]+|[\d\.,]*))x(\d[\d\.,]*)\b/', '$1×$2', $curl ); |
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} |
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} |
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} |
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$text = implode( '', $textarr ); |
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// Replace each & with & unless it already looks like an entity. |
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$text = preg_replace('/&(?!#(?:\d+|x[a-f0-9]+);|[a-z1-4]{1,8};)/i', '&', $text); |
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return $text; |
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} |
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/** |
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* Search for disabled element tags. Push element to stack on tag open and pop |
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* on tag close. |
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* |
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* Assumes first char of $text is tag opening and last char is tag closing. |
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* Assumes second char of $text is optionally '/' to indicate closing as in </html>. |
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* |
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* @since 2.9.0 |
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* @access private |
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* |
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* @param string $text Text to check. Must be a tag like `<html>` or `[shortcode]`. |
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* @param array $stack List of open tag elements. |
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* @param array $disabled_elements The tag names to match against. Spaces are not allowed in tag names. |
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*/ |
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function _wptexturize_pushpop_element($text, &$stack, $disabled_elements) { |
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// Is it an opening tag or closing tag? |
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if ( '/' !== $text[1] ) { |
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$opening_tag = true; |
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$name_offset = 1; |
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} elseif ( 0 == count( $stack ) ) { |
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// Stack is empty. Just stop. |
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return; |
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} else { |
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$opening_tag = false; |
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$name_offset = 2; |
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} |
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// Parse out the tag name. |
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$space = strpos( $text, ' ' ); |
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if ( false === $space ) { |
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$space = -1; |
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} else { |
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$space -= $name_offset; |
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} |
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$tag = substr( $text, $name_offset, $space ); |
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// Handle disabled tags. |
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if ( in_array( $tag, $disabled_elements ) ) { |
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if ( $opening_tag ) { |
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/* |
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* This disables texturize until we find a closing tag of our type |
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* (e.g. <pre>) even if there was invalid nesting before that |
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* |
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* Example: in the case <pre>sadsadasd</code>"baba"</pre> |
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* "baba" won't be texturize |
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*/ |
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array_push( $stack, $tag ); |
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} elseif ( end( $stack ) == $tag ) { |
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array_pop( $stack ); |
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} |
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} |
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} |
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/** |
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* Replaces double line-breaks with paragraph elements. |
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* |
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* A group of regex replaces used to identify text formatted with newlines and |
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* replace double line-breaks with HTML paragraph tags. The remaining line-breaks |
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* after conversion become <<br />> tags, unless $br is set to '0' or 'false'. |
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* |
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* @since 0.71 |
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* |
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* @param string $pee The text which has to be formatted. |
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* @param bool $br Optional. If set, this will convert all remaining line-breaks |
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* after paragraphing. Default true. |
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* @return string Text which has been converted into correct paragraph tags. |
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*/ |
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function wpautop($pee, $br = true) { |
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$pre_tags = array(); |
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if ( trim($pee) === '' ) |
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return ''; |
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// Just to make things a little easier, pad the end. |
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$pee = $pee . "\n"; |
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/* |
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* Pre tags shouldn't be touched by autop. |
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* Replace pre tags with placeholders and bring them back after autop. |
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*/ |
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if ( strpos($pee, '<pre') !== false ) { |
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$pee_parts = explode( '</pre>', $pee ); |
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$last_pee = array_pop($pee_parts); |
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$pee = ''; |
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$i = 0; |
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foreach ( $pee_parts as $pee_part ) { |
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$start = strpos($pee_part, '<pre'); |
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// Malformed html? |
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if ( $start === false ) { |
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$pee .= $pee_part; |
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continue; |
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} |
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$name = "<pre wp-pre-tag-$i></pre>"; |
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$pre_tags[$name] = substr( $pee_part, $start ) . '</pre>'; |
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$pee .= substr( $pee_part, 0, $start ) . $name; |
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$i++; |
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} |
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$pee .= $last_pee; |
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} |
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// Change multiple <br>s into two line breaks, which will turn into paragraphs. |
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$pee = preg_replace('|<br />\s*<br />|', "\n\n", $pee); |
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$allblocks = '(?:table|thead|tfoot|caption|col|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|form|map|area|blockquote|address|math|style|p|h[1-6]|hr|fieldset|legend|section|article|aside|hgroup|header|footer|nav|figure|figcaption|details|menu|summary)'; |
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// Add a single line break above block-level opening tags. |
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$pee = preg_replace('!(<' . $allblocks . '[^>]*>)!', "\n$1", $pee); |
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// Add a double line break below block-level closing tags. |
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$pee = preg_replace('!(</' . $allblocks . '>)!', "$1\n\n", $pee); |
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// Standardize newline characters to "\n". |
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$pee = str_replace(array("\r\n", "\r"), "\n", $pee); |
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// Collapse line breaks before and after <option> elements so they don't get autop'd. |
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if ( strpos( $pee, '<option' ) !== false ) { |
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$pee = preg_replace( '|\s*<option|', '<option', $pee ); |
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$pee = preg_replace( '|</option>\s*|', '</option>', $pee ); |
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} |
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/* |
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* Collapse line breaks inside <object> elements, before <param> and <embed> elements |
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* so they don't get autop'd. |
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*/ |
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if ( strpos( $pee, '</object>' ) !== false ) { |
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$pee = preg_replace( '|(<object[^>]*>)\s*|', '$1', $pee ); |
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$pee = preg_replace( '|\s*</object>|', '</object>', $pee ); |
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$pee = preg_replace( '%\s*(</?(?:param|embed)[^>]*>)\s*%', '$1', $pee ); |
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} |
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/* |
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* Collapse line breaks inside <audio> and <video> elements, |
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* before and after <source> and <track> elements. |
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*/ |
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if ( strpos( $pee, '<source' ) !== false || strpos( $pee, '<track' ) !== false ) { |
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$pee = preg_replace( '%([<\[](?:audio|video)[^>\]]*[>\]])\s*%', '$1', $pee ); |
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$pee = preg_replace( '%\s*([<\[]/(?:audio|video)[>\]])%', '$1', $pee ); |
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$pee = preg_replace( '%\s*(<(?:source|track)[^>]*>)\s*%', '$1', $pee ); |
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} |
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// Remove more than two contiguous line breaks. |
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$pee = preg_replace("/\n\n+/", "\n\n", $pee); |
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// Split up the contents into an array of strings, separated by double line breaks. |
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$pees = preg_split('/\n\s*\n/', $pee, -1, PREG_SPLIT_NO_EMPTY); |
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// Reset $pee prior to rebuilding. |
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$pee = ''; |
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// Rebuild the content as a string, wrapping every bit with a <p>. |
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foreach ( $pees as $tinkle ) { |
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$pee .= '<p>' . trim($tinkle, "\n") . "</p>\n"; |
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} |
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// Under certain strange conditions it could create a P of entirely whitespace. |
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$pee = preg_replace('|<p>\s*</p>|', '', $pee); |
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// Add a closing <p> inside <div>, <address>, or <form> tag if missing. |
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$pee = preg_replace('!<p>([^<]+)</(div|address|form)>!', "<p>$1</p></$2>", $pee); |
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// If an opening or closing block element tag is wrapped in a <p>, unwrap it. |
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$pee = preg_replace('!<p>\s*(</?' . $allblocks . '[^>]*>)\s*</p>!', "$1", $pee); |
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// In some cases <li> may get wrapped in <p>, fix them. |
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$pee = preg_replace("|<p>(<li.+?)</p>|", "$1", $pee); |
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// If a <blockquote> is wrapped with a <p>, move it inside the <blockquote>. |
|
$pee = preg_replace('|<p><blockquote([^>]*)>|i', "<blockquote$1><p>", $pee); |
|
$pee = str_replace('</blockquote></p>', '</p></blockquote>', $pee); |
|
|
|
// If an opening or closing block element tag is preceded by an opening <p> tag, remove it. |
|
$pee = preg_replace('!<p>\s*(</?' . $allblocks . '[^>]*>)!', "$1", $pee); |
|
|
|
// If an opening or closing block element tag is followed by a closing <p> tag, remove it. |
|
$pee = preg_replace('!(</?' . $allblocks . '[^>]*>)\s*</p>!', "$1", $pee); |
|
|
|
// Optionally insert line breaks. |
|
if ( $br ) { |
|
// Replace newlines that shouldn't be touched with a placeholder. |
|
$pee = preg_replace_callback('/<(script|style).*?<\/\\1>/s', '_autop_newline_preservation_helper', $pee); |
|
|
|
// Replace any new line characters that aren't preceded by a <br /> with a <br />. |
|
$pee = preg_replace('|(?<!<br />)\s*\n|', "<br />\n", $pee); |
|
|
|
// Replace newline placeholders with newlines. |
|
$pee = str_replace('<WPPreserveNewline />', "\n", $pee); |
|
} |
|
|
|
// If a <br /> tag is after an opening or closing block tag, remove it. |
|
$pee = preg_replace('!(</?' . $allblocks . '[^>]*>)\s*<br />!', "$1", $pee); |
|
|
|
// If a <br /> tag is before a subset of opening or closing block tags, remove it. |
|
$pee = preg_replace('!<br />(\s*</?(?:p|li|div|dl|dd|dt|th|pre|td|ul|ol)[^>]*>)!', '$1', $pee); |
|
$pee = preg_replace( "|\n</p>$|", '</p>', $pee ); |
|
|
|
// Replace placeholder <pre> tags with their original content. |
|
if ( !empty($pre_tags) ) |
|
$pee = str_replace(array_keys($pre_tags), array_values($pre_tags), $pee); |
|
|
|
return $pee; |
|
} |
|
|
|
/** |
|
* Newline preservation help function for wpautop |
|
* |
|
* @since 3.1.0 |
|
* @access private |
|
* |
|
* @param array $matches preg_replace_callback matches array |
|
* @return string |
|
*/ |
|
function _autop_newline_preservation_helper( $matches ) { |
|
return str_replace("\n", "<WPPreserveNewline />", $matches[0]); |
|
} |
|
|
|
/** |
|
* Don't auto-p wrap shortcodes that stand alone |
|
* |
|
* Ensures that shortcodes are not wrapped in `<p>...</p>`. |
|
* |
|
* @since 2.9.0 |
|
* |
|
* @param string $pee The content. |
|
* @return string The filtered content. |
|
*/ |
|
function shortcode_unautop( $pee ) { |
|
global $shortcode_tags; |
|
|
|
if ( empty( $shortcode_tags ) || !is_array( $shortcode_tags ) ) { |
|
return $pee; |
|
} |
|
|
|
$tagregexp = join( '|', array_map( 'preg_quote', array_keys( $shortcode_tags ) ) ); |
|
$spaces = wp_spaces_regexp(); |
|
|
|
$pattern = |
|
'/' |
|
. '<p>' // Opening paragraph |
|
. '(?:' . $spaces . ')*+' // Optional leading whitespace |
|
. '(' // 1: The shortcode |
|
. '\\[' // Opening bracket |
|
. "($tagregexp)" // 2: Shortcode name |
|
. '(?![\\w-])' // Not followed by word character or hyphen |
|
// Unroll the loop: Inside the opening shortcode tag |
|
. '[^\\]\\/]*' // Not a closing bracket or forward slash |
|
. '(?:' |
|
. '\\/(?!\\])' // A forward slash not followed by a closing bracket |
|
. '[^\\]\\/]*' // Not a closing bracket or forward slash |
|
. ')*?' |
|
. '(?:' |
|
. '\\/\\]' // Self closing tag and closing bracket |
|
. '|' |
|
. '\\]' // Closing bracket |
|
. '(?:' // Unroll the loop: Optionally, anything between the opening and closing shortcode tags |
|
. '[^\\[]*+' // Not an opening bracket |
|
. '(?:' |
|
. '\\[(?!\\/\\2\\])' // An opening bracket not followed by the closing shortcode tag |
|
. '[^\\[]*+' // Not an opening bracket |
|
. ')*+' |
|
. '\\[\\/\\2\\]' // Closing shortcode tag |
|
. ')?' |
|
. ')' |
|
. ')' |
|
. '(?:' . $spaces . ')*+' // optional trailing whitespace |
|
. '<\\/p>' // closing paragraph |
|
. '/s'; |
|
|
|
return preg_replace( $pattern, '$1', $pee ); |
|
} |
|
|
|
/** |
|
* Checks to see if a string is utf8 encoded. |
|
* |
|
* NOTE: This function checks for 5-Byte sequences, UTF8 |
|
* has Bytes Sequences with a maximum length of 4. |
|
* |
|
* @author bmorel at ssi dot fr (modified) |
|
* @since 1.2.1 |
|
* |
|
* @param string $str The string to be checked |
|
* @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; $j++) { // n bytes matching 10bbbbbb follow ? |
|
if ((++$i == $length) || ((ord($str[$i]) & 0xC0) != 0x80)) |
|
return false; |
|
} |
|
} |
|
return true; |
|
} |
|
|
|
/** |
|
* Converts a number of special characters into their HTML entities. |
|
* |
|
* Specifically deals with: &, <, >, ", and '. |
|
* |
|
* $quote_style can be set to ENT_COMPAT to encode " to |
|
* ", or ENT_QUOTES to do both. Default is ENT_NOQUOTES where no quotes are encoded. |
|
* |
|
* @since 1.2.2 |
|
* @access private |
|
* |
|
* @param string $string The text which is to be encoded. |
|
* @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. |
|
*/ |
|
function _wp_specialchars( $string, $quote_style = ENT_NOQUOTES, $charset = false, $double_encode = false ) { |
|
$string = (string) $string; |
|
|
|
if ( 0 === strlen( $string ) ) |
|
return ''; |
|
|
|
// Don't bother if there are no specialchars - saves some processing |
|
if ( ! preg_match( '/[&<>"\']/', $string ) ) |
|
return $string; |
|
|
|
// Account for the previous behaviour of the function when the $quote_style is not an accepted value |
|
if ( empty( $quote_style ) ) |
|
$quote_style = ENT_NOQUOTES; |
|
elseif ( ! in_array( $quote_style, array( 0, 2, 3, 'single', 'double' ), true ) ) |
|
$quote_style = ENT_QUOTES; |
|
|
|
// Store the site charset as a static to avoid multiple calls to wp_load_alloptions() |
|
if ( ! $charset ) { |
|
static $_charset; |
|
if ( ! isset( $_charset ) ) { |
|
$alloptions = wp_load_alloptions(); |
|
$_charset = isset( $alloptions['blog_charset'] ) ? $alloptions['blog_charset'] : ''; |
|
} |
|
$charset = $_charset; |
|
} |
|
|
|
if ( in_array( $charset, array( 'utf8', 'utf-8', 'UTF8' ) ) ) |
|
$charset = 'UTF-8'; |
|
|
|
$_quote_style = $quote_style; |
|
|
|
if ( $quote_style === 'double' ) { |
|
$quote_style = ENT_COMPAT; |
|
$_quote_style = ENT_COMPAT; |
|
} elseif ( $quote_style === 'single' ) { |
|
$quote_style = ENT_NOQUOTES; |
|
} |
|
|
|
// Handle double encoding ourselves |
|
if ( $double_encode ) { |
|
$string = @htmlspecialchars( $string, $quote_style, $charset ); |
|
} else { |
|
// Decode & into & |
|
$string = wp_specialchars_decode( $string, $_quote_style ); |
|
|
|
// Guarantee every &entity; is valid or re-encode the & |
|
$string = wp_kses_normalize_entities( $string ); |
|
|
|
// Now re-encode everything except &entity; |
|
$string = preg_split( '/(&#?x?[0-9a-z]+;)/i', $string, -1, PREG_SPLIT_DELIM_CAPTURE ); |
|
|
|
for ( $i = 0, $c = count( $string ); $i < $c; $i += 2 ) { |
|
$string[$i] = @htmlspecialchars( $string[$i], $quote_style, $charset ); |
|
} |
|
$string = implode( '', $string ); |
|
} |
|
|
|
// Backwards compatibility |
|
if ( 'single' === $_quote_style ) |
|
$string = str_replace( "'", ''', $string ); |
|
|
|
return $string; |
|
} |
|
|
|
/** |
|
* Converts a number of HTML entities into their special characters. |
|
* |
|
* Specifically deals with: &, <, >, ", and '. |
|
* |
|
* $quote_style can be set to ENT_COMPAT to decode " entities, |
|
* or ENT_QUOTES to do both " and '. Default is ENT_NOQUOTES where no quotes are decoded. |
|
* |
|
* @since 2.8.0 |
|
* |
|
* @param string $string The text which is to be decoded. |
|
* @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 _wp_specialchars() values; converting single quotes if set to 'single', double if set to 'double' or both if otherwise set. Default is ENT_NOQUOTES. |
|
* @return string The decoded text without HTML entities. |
|
*/ |
|
function wp_specialchars_decode( $string, $quote_style = ENT_NOQUOTES ) { |
|
$string = (string) $string; |
|
|
|
if ( 0 === strlen( $string ) ) { |
|
return ''; |
|
} |
|
|
|
// Don't bother if there are no entities - saves a lot of processing |
|
if ( strpos( $string, '&' ) === false ) { |
|
return $string; |
|
} |
|
|
|
// Match the previous behaviour of _wp_specialchars() when the $quote_style is not an accepted value |
|
if ( empty( $quote_style ) ) { |
|
$quote_style = ENT_NOQUOTES; |
|
} elseif ( !in_array( $quote_style, array( 0, 2, 3, 'single', 'double' ), true ) ) { |
|
$quote_style = ENT_QUOTES; |
|
} |
|
|
|
// More complete than get_html_translation_table( HTML_SPECIALCHARS ) |
|
$single = array( ''' => '\'', ''' => '\'' ); |
|
$single_preg = array( '/�*39;/' => ''', '/�*27;/i' => ''' ); |
|
$double = array( '"' => '"', '"' => '"', '"' => '"' ); |
|
$double_preg = array( '/�*34;/' => '"', '/�*22;/i' => '"' ); |
|
$others = array( '<' => '<', '<' => '<', '>' => '>', '>' => '>', '&' => '&', '&' => '&', '&' => '&' ); |
|
$others_preg = array( '/�*60;/' => '<', '/�*62;/' => '>', '/�*38;/' => '&', '/�*26;/i' => '&' ); |
|
|
|
if ( $quote_style === ENT_QUOTES ) { |
|
$translation = array_merge( $single, $double, $others ); |
|
$translation_preg = array_merge( $single_preg, $double_preg, $others_preg ); |
|
} elseif ( $quote_style === ENT_COMPAT || $quote_style === 'double' ) { |
|
$translation = array_merge( $double, $others ); |
|
$translation_preg = array_merge( $double_preg, $others_preg ); |
|
} elseif ( $quote_style === 'single' ) { |
|
$translation = array_merge( $single, $others ); |
|
$translation_preg = array_merge( $single_preg, $others_preg ); |
|
} elseif ( $quote_style === ENT_NOQUOTES ) { |
|
$translation = $others; |
|
$translation_preg = $others_preg; |
|
} |
|
|
|
// Remove zero padding on numeric entities |
|
$string = preg_replace( array_keys( $translation_preg ), array_values( $translation_preg ), $string ); |
|
|
|
// Replace characters according to translation table |
|
return strtr( $string, $translation ); |
|
} |
|
|
|
/** |
|
* Checks for invalid UTF8 in a string. |
|
* |
|
* @since 2.8.0 |
|
* |
|
* @param string $string The text which is to be checked. |
|
* @param boolean $strip Optional. Whether to attempt to strip out invalid UTF8. Default is false. |
|
* @return string The checked text. |
|
*/ |
|
function wp_check_invalid_utf8( $string, $strip = false ) { |
|
$string = (string) $string; |
|
|
|
if ( 0 === strlen( $string ) ) { |
|
return ''; |
|
} |
|
|
|
// Store the site charset as a static to avoid multiple calls to get_option() |
|
static $is_utf8; |
|
if ( !isset( $is_utf8 ) ) { |
|
$is_utf8 = in_array( get_option( 'blog_charset' ), array( 'utf8', 'utf-8', 'UTF8', 'UTF-8' ) ); |
|
} |
|
if ( !$is_utf8 ) { |
|
return $string; |
|
} |
|
|
|
// Check for support for utf8 in the installed PCRE library once and store the result in a static |
|
static $utf8_pcre; |
|
if ( !isset( $utf8_pcre ) ) { |
|
$utf8_pcre = @preg_match( '/^./u', 'a' ); |
|
} |
|
// We can't demand utf8 in the PCRE installation, so just return the string in those cases |
|
if ( !$utf8_pcre ) { |
|
return $string; |
|
} |
|
|
|
// preg_match fails when it encounters invalid UTF8 in $string |
|
if ( 1 === @preg_match( '/^./us', $string ) ) { |
|
return $string; |
|
} |
|
|
|
// Attempt to strip the bad chars if requested (not recommended) |
|
if ( $strip && function_exists( 'iconv' ) ) { |
|
return iconv( 'utf-8', 'utf-8', $string ); |
|
} |
|
|
|
return ''; |
|
} |
|
|
|
/** |
|
* Encode the Unicode values to be used in the URI. |
|
* |
|
* @since 1.5.0 |
|
* |
|
* @param string $utf8_string |
|
* @param int $length Max length of the string |
|
* @return string String with Unicode encoded for URI. |
|
*/ |
|
function utf8_uri_encode( $utf8_string, $length = 0 ) { |
|
$unicode = ''; |
|
$values = array(); |
|
$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 ] ); |
|
|
|
if ( $value < 128 ) { |
|
if ( $length && ( $unicode_length >= $length ) ) |
|
break; |
|
$unicode .= chr($value); |
|
$unicode_length++; |
|
} else { |
|
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 ) { |
|
for ( $j = 0; $j < $num_octets; $j++ ) { |
|
$unicode .= '%' . dechex( $values[ $j ] ); |
|
} |
|
|
|
$unicode_length += $num_octets * 3; |
|
|
|
$values = array(); |
|
$num_octets = 1; |
|
} |
|
} |
|
} |
|
|
|
return $unicode; |
|
} |
|
|
|
/** |
|
* Converts all accent characters to ASCII characters. |
|
* |
|
* If there are no accent characters, then the string given is just returned. |
|
* |
|
* @since 1.2.1 |
|
* |
|
* @param string $string Text that might have accent characters |
|
* @return string Filtered string with replaced "nice" characters. |
|
*/ |
|
function remove_accents($string) { |
|
if ( !preg_match('/[\x80-\xff]/', $string) ) |
|
return $string; |
|
|
|
if (seems_utf8($string)) { |
|
$chars = array( |
|
// Decompositions for Latin-1 Supplement |
|
chr(194).chr(170) => 'a', chr(194).chr(186) => 'o', |
|
chr(195).chr(128) => 'A', chr(195).chr(129) => 'A', |
|
chr(195).chr(130) => 'A', chr(195).chr(131) => 'A', |
|
chr(195).chr(132) => 'A', chr(195).chr(133) => 'A', |
|
chr(195).chr(134) => 'AE',chr(195).chr(135) => 'C', |
|
chr(195).chr(136) => 'E', chr(195).chr(137) => 'E', |
|
chr(195).chr(138) => 'E', chr(195).chr(139) => 'E', |
|
chr(195).chr(140) => 'I', chr(195).chr(141) => 'I', |
|
chr(195).chr(142) => 'I', chr(195).chr(143) => 'I', |
|
chr(195).chr(144) => 'D', chr(195).chr(145) => 'N', |
|
chr(195).chr(146) => 'O', chr(195).chr(147) => 'O', |
|
chr(195).chr(148) => 'O', chr(195).chr(149) => 'O', |
|
chr(195).chr(150) => 'O', chr(195).chr(153) => 'U', |
|
chr(195).chr(154) => 'U', chr(195).chr(155) => 'U', |
|
chr(195).chr(156) => 'U', chr(195).chr(157) => 'Y', |
|
chr(195).chr(158) => 'TH',chr(195).chr(159) => 's', |
|
chr(195).chr(160) => 'a', chr(195).chr(161) => 'a', |
|
chr(195).chr(162) => 'a', chr(195).chr(163) => 'a', |
|
chr(195).chr(164) => 'a', chr(195).chr(165) => 'a', |
|
chr(195).chr(166) => 'ae',chr(195).chr(167) => 'c', |
|
chr(195).chr(168) => 'e', chr(195).chr(169) => 'e', |
|
chr(195).chr(170) => 'e', chr(195).chr(171) => 'e', |
|
chr(195).chr(172) => 'i', chr(195).chr(173) => 'i', |
|
chr(195).chr(174) => 'i', chr(195).chr(175) => 'i', |
|
chr(195).chr(176) => 'd', chr(195).chr(177) => 'n', |
|
chr(195).chr(178) => 'o', chr(195).chr(179) => 'o', |
|
chr(195).chr(180) => 'o', chr(195).chr(181) => 'o', |
|
chr(195).chr(182) => 'o', chr(195).chr(184) => 'o', |
|
chr(195).chr(185) => 'u', chr(195).chr(186) => 'u', |
|
chr(195).chr(187) => 'u', chr(195).chr(188) => 'u', |
|
chr(195).chr(189) => 'y', chr(195).chr(190) => 'th', |
|
chr(195).chr(191) => 'y', chr(195).chr(152) => 'O', |
|
// Decompositions for Latin Extended-A |
|
chr(196).chr(128) => 'A', chr(196).chr(129) => 'a', |
|
chr(196).chr(130) => 'A', chr(196).chr(131) => 'a', |
|
chr(196).chr(132) => 'A', chr(196).chr(133) => 'a', |
|
chr(196).chr(134) => 'C', chr(196).chr(135) => 'c', |
|
chr(196).chr(136) => 'C', chr(196).chr(137) => 'c', |
|
chr(196).chr(138) => 'C', chr(196).chr(139) => 'c', |
|
chr(196).chr(140) => 'C', chr(196).chr(141) => 'c', |
|
chr(196).chr(142) => 'D', chr(196).chr(143) => 'd', |
|
chr(196).chr(144) => 'D', chr(196).chr(145) => 'd', |
|
chr(196).chr(146) => 'E', chr(196).chr(147) => 'e', |
|
chr(196).chr(148) => 'E', chr(196).chr(149) => 'e', |
|
chr(196).chr(150) => 'E', chr(196).chr(151) => 'e', |
|
chr(196).chr(152) => 'E', chr(196).chr(153) => 'e', |
|
chr(196).chr(154) => 'E', chr(196).chr(155) => 'e', |
|
chr(196).chr(156) => 'G', chr(196).chr(157) => 'g', |
|
chr(196).chr(158) => 'G', chr(196).chr(159) => 'g', |
|
chr(196).chr(160) => 'G', chr(196).chr(161) => 'g', |
|
chr(196).chr(162) => 'G', chr(196).chr(163) => 'g', |
|
chr(196).chr(164) => 'H', chr(196).chr(165) => 'h', |
|
chr(196).chr(166) => 'H', chr(196).chr(167) => 'h', |
|
chr(196).chr(168) => 'I', chr(196).chr(169) => 'i', |
|
chr(196).chr(170) => 'I', chr(196).chr(171) => 'i', |
|
chr(196).chr(172) => 'I', chr(196).chr(173) => 'i', |
|
chr(196).chr(174) => 'I', chr(196).chr(175) => 'i', |
|
chr(196).chr(176) => 'I', chr(196).chr(177) => 'i', |
|
chr(196).chr(178) => 'IJ',chr(196).chr(179) => 'ij', |
|
chr(196).chr(180) => 'J', chr(196).chr(181) => 'j', |
|
chr(196).chr(182) => 'K', chr(196).chr(183) => 'k', |
|
chr(196).chr(184) => 'k', chr(196).chr(185) => 'L', |
|
chr(196).chr(186) => 'l', chr(196).chr(187) => 'L', |
|
chr(196).chr(188) => 'l', chr(196).chr(189) => 'L', |
|
chr(196).chr(190) => 'l', chr(196).chr(191) => 'L', |
|
chr(197).chr(128) => 'l', chr(197).chr(129) => 'L', |
|
chr(197).chr(130) => 'l', chr(197).chr(131) => 'N', |
|
chr(197).chr(132) => 'n', chr(197).chr(133) => 'N', |
|
chr(197).chr(134) => 'n', chr(197).chr(135) => 'N', |
|
chr(197).chr(136) => 'n', chr(197).chr(137) => 'N', |
|
chr(197).chr(138) => 'n', chr(197).chr(139) => 'N', |
|
chr(197).chr(140) => 'O', chr(197).chr(141) => 'o', |
|
chr(197).chr(142) => 'O', chr(197).chr(143) => 'o', |
|
chr(197).chr(144) => 'O', chr(197).chr(145) => 'o', |
|
chr(197).chr(146) => 'OE',chr(197).chr(147) => 'oe', |
|
chr(197).chr(148) => 'R',chr(197).chr(149) => 'r', |
|
chr(197).chr(150) => 'R',chr(197).chr(151) => 'r', |
|
chr(197).chr(152) => 'R',chr(197).chr(153) => 'r', |
|
chr(197).chr(154) => 'S',chr(197).chr(155) => 's', |
|
chr(197).chr(156) => 'S',chr(197).chr(157) => 's', |
|
chr(197).chr(158) => 'S',chr(197).chr(159) => 's', |
|
chr(197).chr(160) => 'S', chr(197).chr(161) => 's', |
|
chr(197).chr(162) => 'T', chr(197).chr(163) => 't', |
|
chr(197).chr(164) => 'T', chr(197).chr(165) => 't', |
|
chr(197).chr(166) => 'T', chr(197).chr(167) => 't', |
|
chr(197).chr(168) => 'U', chr(197).chr(169) => 'u', |
|
chr(197).chr(170) => 'U', chr(197).chr(171) => 'u', |
|
chr(197).chr(172) => 'U', chr(197).chr(173) => 'u', |
|
chr(197).chr(174) => 'U', chr(197).chr(175) => 'u', |
|
chr(197).chr(176) => 'U', chr(197).chr(177) => 'u', |
|
chr(197).chr(178) => 'U', chr(197).chr(179) => 'u', |
|
chr(197).chr(180) => 'W', chr(197).chr(181) => 'w', |
|
chr(197).chr(182) => 'Y', chr(197).chr(183) => 'y', |
|
chr(197).chr(184) => 'Y', chr(197).chr(185) => 'Z', |
|
chr(197).chr(186) => 'z', chr(197).chr(187) => 'Z', |
|
chr(197).chr(188) => 'z', chr(197).chr(189) => 'Z', |
|
chr(197).chr(190) => 'z', chr(197).chr(191) => 's', |
|
// Decompositions for Latin Extended-B |
|
chr(200).chr(152) => 'S', chr(200).chr(153) => 's', |
|
chr(200).chr(154) => 'T', chr(200).chr(155) => 't', |
|
// Euro Sign |
|
chr(226).chr(130).chr(172) => 'E', |
|
// GBP (Pound) Sign |
|
chr(194).chr(163) => '', |
|
// Vowels with diacritic (Vietnamese) |
|
// unmarked |
|
chr(198).chr(160) => 'O', chr(198).chr(161) => 'o', |
|
chr(198).chr(175) => 'U', chr(198).chr(176) => 'u', |
|
// grave accent |
|
chr(225).chr(186).chr(166) => 'A', chr(225).chr(186).chr(167) => 'a', |
|
chr(225).chr(186).chr(176) => 'A', chr(225).chr(186).chr(177) => 'a', |
|
chr(225).chr(187).chr(128) => 'E', chr(225).chr(187).chr(129) => 'e', |
|
chr(225).chr(187).chr(146) => 'O', chr(225).chr(187).chr(147) => 'o', |
|
chr(225).chr(187).chr(156) => 'O', chr(225).chr(187).chr(157) => 'o', |
|
chr(225).chr(187).chr(170) => 'U', chr(225).chr(187).chr(171) => 'u', |
|
chr(225).chr(187).chr(178) => 'Y', chr(225).chr(187).chr(179) => 'y', |
|
// hook |
|
chr(225).chr(186).chr(162) => 'A', chr(225).chr(186).chr(163) => 'a', |
|
chr(225).chr(186).chr(168) => 'A', chr(225).chr(186).chr(169) => 'a', |
|
chr(225).chr(186).chr(178) => 'A', chr(225).chr(186).chr(179) => 'a', |
|
chr(225).chr(186).chr(186) => 'E', chr(225).chr(186).chr(187) => 'e', |
|
chr(225).chr(187).chr(130) => 'E', chr(225).chr(187).chr(131) => 'e', |
|
chr(225).chr(187).chr(136) => 'I', chr(225).chr(187).chr(137) => 'i', |
|
chr(225).chr(187).chr(142) => 'O', chr(225).chr(187).chr(143) => 'o', |
|
chr(225).chr(187).chr(148) => 'O', chr(225).chr(187).chr(149) => 'o', |
|
chr(225).chr(187).chr(158) => 'O', chr(225).chr(187).chr(159) => 'o', |
|
chr(225).chr(187).chr(166) => 'U', chr(225).chr(187).chr(167) => 'u', |
|
chr(225).chr(187).chr(172) => 'U', chr(225).chr(187).chr(173) => 'u', |
|
chr(225).chr(187).chr(182) => 'Y', chr(225).chr(187).chr(183) => 'y', |
|
// tilde |
|
chr(225).chr(186).chr(170) => 'A', chr(225).chr(186).chr(171) => 'a', |
|
chr(225).chr(186).chr(180) => 'A', chr(225).chr(186).chr(181) => 'a', |
|
chr(225).chr(186).chr(188) => 'E', chr(225).chr(186).chr(189) => 'e', |
|
chr(225).chr(187).chr(132) => 'E', chr(225).chr(187).chr(133) => 'e', |
|
chr(225).chr(187).chr(150) => 'O', chr(225).chr(187).chr(151) => 'o', |
|
chr(225).chr(187).chr(160) => 'O', chr(225).chr(187).chr(161) => 'o', |
|
chr(225).chr(187).chr(174) => 'U', chr(225).chr(187).chr(175) => 'u', |
|
chr(225).chr(187).chr(184) => 'Y', chr(225).chr(187).chr(185) => 'y', |
|
// acute accent |
|
chr(225).chr(186).chr(164) => 'A', chr(225).chr(186).chr(165) => 'a', |
|
chr(225).chr(186).chr(174) => 'A', chr(225).chr(186).chr(175) => 'a', |
|
chr(225).chr(186).chr(190) => 'E', chr(225).chr(186).chr(191) => 'e', |
|
chr(225).chr(187).chr(144) => 'O', chr(225).chr(187).chr(145) => 'o', |
|
chr(225).chr(187).chr(154) => 'O', chr(225).chr(187).chr(155) => 'o', |
|
chr(225).chr(187).chr(168) => 'U', chr(225).chr(187).chr(169) => 'u', |
|
// dot below |
|
chr(225).chr(186).chr(160) => 'A', chr(225).chr(186).chr(161) => 'a', |
|
chr(225).chr(186).chr(172) => 'A', chr(225).chr(186).chr(173) => 'a', |
|
chr(225).chr(186).chr(182) => 'A', chr(225).chr(186).chr(183) => 'a', |
|
chr(225).chr(186).chr(184) => 'E', chr(225).chr(186).chr(185) => 'e', |
|
chr(225).chr(187).chr(134) => 'E', chr(225).chr(187).chr(135) => 'e', |
|
chr(225).chr(187).chr(138) => 'I', chr(225).chr(187).chr(139) => 'i', |
|
chr(225).chr(187).chr(140) => 'O', chr(225).chr(187).chr(141) => 'o', |
|
chr(225).chr(187).chr(152) => 'O', chr(225).chr(187).chr(153) => 'o', |
|
chr(225).chr(187).chr(162) => 'O', chr(225).chr(187).chr(163) => 'o', |
|
chr(225).chr(187).chr(164) => 'U', chr(225).chr(187).chr(165) => 'u', |
|
chr(225).chr(187).chr(176) => 'U', chr(225).chr(187).chr(177) => 'u', |
|
chr(225).chr(187).chr(180) => 'Y', chr(225).chr(187).chr(181) => 'y', |
|
// Vowels with diacritic (Chinese, Hanyu Pinyin) |
|
chr(201).chr(145) => 'a', |
|
// macron |
|
chr(199).chr(149) => 'U', chr(199).chr(150) => 'u', |
|
// acute accent |
|
chr(199).chr(151) => 'U', chr(199).chr(152) => 'u', |
|
// caron |
|
chr(199).chr(141) => 'A', chr(199).chr(142) => 'a', |
|
chr(199).chr(143) => 'I', chr(199).chr(144) => 'i', |
|
chr(199).chr(145) => 'O', chr(199).chr(146) => 'o', |
|
chr(199).chr(147) => 'U', chr(199).chr(148) => 'u', |
|
chr(199).chr(153) => 'U', chr(199).chr(154) => 'u', |
|
// grave accent |
|
chr(199).chr(155) => 'U', chr(199).chr(156) => 'u', |
|
); |
|
|
|
// Used for locale-specific rules |
|
$locale = get_locale(); |
|
|
|
if ( 'de_DE' == $locale ) { |
|
$chars[ chr(195).chr(132) ] = 'Ae'; |
|
$chars[ chr(195).chr(164) ] = 'ae'; |
|
$chars[ chr(195).chr(150) ] = 'Oe'; |
|
$chars[ chr(195).chr(182) ] = 'oe'; |
|
$chars[ chr(195).chr(156) ] = 'Ue'; |
|
$chars[ chr(195).chr(188) ] = 'ue'; |
|
$chars[ chr(195).chr(159) ] = 'ss'; |
|
} elseif ( 'da_DK' === $locale ) { |
|
$chars[ chr(195).chr(134) ] = 'Ae'; |
|
$chars[ chr(195).chr(166) ] = 'ae'; |
|
$chars[ chr(195).chr(152) ] = 'Oe'; |
|
$chars[ chr(195).chr(184) ] = 'oe'; |
|
$chars[ chr(195).chr(133) ] = 'Aa'; |
|
$chars[ chr(195).chr(165) ] = 'aa'; |
|
} |
|
|
|
$string = strtr($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) |
|
.chr(195).chr(196).chr(197).chr(199).chr(200).chr(201).chr(202) |
|
.chr(203).chr(204).chr(205).chr(206).chr(207).chr(209).chr(210) |
|
.chr(211).chr(212).chr(213).chr(214).chr(216).chr(217).chr(218) |
|
.chr(219).chr(220).chr(221).chr(224).chr(225).chr(226).chr(227) |
|
.chr(228).chr(229).chr(231).chr(232).chr(233).chr(234).chr(235) |
|
.chr(236).chr(237).chr(238).chr(239).chr(241).chr(242).chr(243) |
|
.chr(244).chr(245).chr(246).chr(248).chr(249).chr(250).chr(251) |
|
.chr(252).chr(253).chr(255); |
|
|
|
$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); |
|
} |
|
|
|
return $string; |
|
} |
|
|
|
/** |
|
* Sanitizes a filename, replacing whitespace with dashes. |
|
* |
|
* Removes special characters that are illegal in filenames on certain |
|
* operating systems and special characters requiring special escaping |
|
* to manipulate at the command line. Replaces spaces and consecutive |
|
* dashes with a single dash. Trims period, dash and underscore from beginning |
|
* and end of filename. |
|
* |
|
* @since 2.1.0 |
|
* |
|
* @param string $filename The filename to be sanitized |
|
* @return string The sanitized filename |
|
*/ |
|
function sanitize_file_name( $filename ) { |
|
$filename_raw = $filename; |
|
$special_chars = array("?", "[", "]", "/", "\\", "=", "<", ">", ":", ";", ",", "'", "\"", "&", "$", "#", "*", "(", ")", "|", "~", "`", "!", "{", "}", chr(0)); |
|
/** |
|
* Filter the list of characters to remove from a filename. |
|
* |
|
* @since 2.8.0 |
|
* |
|
* @param array $special_chars Characters to remove. |
|
* @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 = 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); |
|
|
|
// Return if only one extension |
|
if ( count( $parts ) <= 2 ) { |
|
/** |
|
* Filter a sanitized filename string. |
|
* |
|
* @since 2.8.0 |
|
* |
|
* @param string $filename Sanitized filename. |
|
* @param string $filename_raw The filename prior to sanitization. |
|
*/ |
|
return apply_filters( 'sanitize_file_name', $filename, $filename_raw ); |
|
} |
|
|
|
// Process multiple extensions |
|
$filename = array_shift($parts); |
|
$extension = array_pop($parts); |
|
$mimes = get_allowed_mime_types(); |
|
|
|
/* |
|
* Loop over any intermediate extensions. Postfix them with a trailing underscore |
|
* if they are a 2 - 5 character long alpha string not in the extension whitelist. |
|
*/ |
|
foreach ( (array) $parts as $part) { |
|
$filename .= '.' . $part; |
|
|
|
if ( preg_match("/^[a-zA-Z]{2,5}\d?$/", $part) ) { |
|
$allowed = false; |
|
foreach ( $mimes as $ext_preg => $mime_match ) { |
|
$ext_preg = '!^(' . $ext_preg . ')$!i'; |
|
if ( preg_match( $ext_preg, $part ) ) { |
|
$allowed = true; |
|
break; |
|
} |
|
} |
|
if ( !$allowed ) |
|
$filename .= '_'; |
|
} |
|
} |
|
$filename .= '.' . $extension; |
|
/** This filter is documented in wp-includes/formatting.php */ |
|
return apply_filters('sanitize_file_name', $filename, $filename_raw); |
|
} |
|
|
|
/** |
|
* Sanitizes a username, stripping out unsafe characters. |
|
* |
|
* Removes tags, octets, entities, and if strict is enabled, will only keep |
|
* alphanumeric, _, space, ., -, @. After sanitizing, it passes the username, |
|
* raw username (the username in the parameter), and the value of $strict as |
|
* parameters for the 'sanitize_user' filter. |
|
* |
|
* @since 2.0.0 |
|
* |
|
* @param string $username The username to be sanitized. |
|
* @param bool $strict If set limits $username to specific characters. Default false. |
|
* @return string The sanitized username, after passing through filters. |
|
*/ |
|
function sanitize_user( $username, $strict = false ) { |
|
$raw_username = $username; |
|
$username = wp_strip_all_tags( $username ); |
|
$username = remove_accents( $username ); |
|
// Kill octets |
|
$username = preg_replace( '|%([a-fA-F0-9][a-fA-F0-9])|', '', $username ); |
|
$username = preg_replace( '/&.+?;/', '', $username ); // Kill entities |
|
|
|
// If strict, reduce to ASCII for max portability. |
|
if ( $strict ) |
|
$username = preg_replace( '|[^a-z0-9 _.\-@]|i', '', $username ); |
|
|
|
$username = trim( $username ); |
|
// Consolidate contiguous whitespace |
|
$username = preg_replace( '|\s+|', ' ', $username ); |
|
|
|
/** |
|
* Filter a sanitized username string. |
|
* |
|
* @since 2.0.1 |
|
* |
|
* @param string $username Sanitized username. |
|
* @param string $raw_username The username prior to sanitization. |
|
* @param bool $strict Whether to limit the sanitization to specific characters. Default false. |
|
*/ |
|
return apply_filters( 'sanitize_user', $username, $raw_username, $strict ); |
|
} |
|
|
|
/** |
|
* Sanitizes a string key. |
|
* |
|
* Keys are used as internal identifiers. Lowercase alphanumeric characters, dashes and underscores are allowed. |
|
* |
|
* @since 3.0.0 |
|
* |
|
* @param string $key String key |
|
* @return string Sanitized key |
|
*/ |
|
function sanitize_key( $key ) { |
|
$raw_key = $key; |
|
$key = strtolower( $key ); |
|
$key = preg_replace( '/[^a-z0-9_\-]/', '', $key ); |
|
|
|
/** |
|
* Filter a sanitized key string. |
|
* |
|
* @since 3.0.0 |
|
* |
|
* @param string $key Sanitized key. |
|
* @param string $raw_key The key prior to sanitization. |
|
*/ |
|
return apply_filters( 'sanitize_key', $key, $raw_key ); |
|
} |
|
|
|
/** |
|
* Sanitizes a title, or returns a fallback title. |
|
* |
|
* Specifically, HTML and PHP tags are stripped. Further actions can be added |
|
* via the plugin API. If $title is empty and $fallback_title is set, the latter |
|
* will be used. |
|
* |
|
* @since 1.0.0 |
|
* |
|
* @param string $title The string to be sanitized. |
|
* @param string $fallback_title Optional. A title to use if $title is empty. |
|
* @param string $context Optional. The operation for which the string is sanitized |
|
* @return string The sanitized string. |
|
*/ |
|
function sanitize_title( $title, $fallback_title = '', $context = 'save' ) { |
|
$raw_title = $title; |
|
|
|
if ( 'save' == $context ) |
|
$title = remove_accents($title); |
|
|
|
/** |
|
* Filter a sanitized title string. |
|
* |
|
* @since 1.2.0 |
|
* |
|
* @param string $title Sanitized title. |
|
* @param string $raw_title The title prior to sanitization. |
|
* @param string $context The context for which the title is being sanitized. |
|
*/ |
|
$title = apply_filters( 'sanitize_title', $title, $raw_title, $context ); |
|
|
|
if ( '' === $title || false === $title ) |
|
$title = $fallback_title; |
|
|
|
return $title; |
|
} |
|
|
|
/** |
|
* Sanitizes a title with the 'query' context. |
|
* |
|
* Used for querying the database for a value from URL. |
|
* |
|
* @since 3.1.0 |
|
* |
|
* @param string $title The string to be sanitized. |
|
* @return string The sanitized string. |
|
*/ |
|
function sanitize_title_for_query( $title ) { |
|
return sanitize_title( $title, '', 'query' ); |
|
} |
|
|
|
/** |
|
* Sanitizes a title, replacing whitespace and a few other characters with dashes. |
|
* |
|
* Limits the output to alphanumeric characters, underscore (_) and dash (-). |
|
* Whitespace becomes a dash. |
|
* |
|
* @since 1.2.0 |
|
* |
|
* @param string $title The title to be sanitized. |
|
* @param string $raw_title Optional. Not used. |
|
* @param string $context Optional. The operation for which the string is sanitized. |
|
* @return string The sanitized title. |
|
*/ |
|
function sanitize_title_with_dashes( $title, $raw_title = '', $context = 'display' ) { |
|
$title = strip_tags($title); |
|
// Preserve escaped octets. |
|
$title = preg_replace('|%([a-fA-F0-9][a-fA-F0-9])|', '---$1---', $title); |
|
// Remove percent signs that are not part of an octet. |
|
$title = str_replace('%', '', $title); |
|
// Restore octets. |
|
$title = preg_replace('|---([a-fA-F0-9][a-fA-F0-9])---|', '%$1', $title); |
|
|
|
if (seems_utf8($title)) { |
|
if (function_exists('mb_strtolower')) { |
|
$title = mb_strtolower($title, 'UTF-8'); |
|
} |
|
$title = utf8_uri_encode($title, 200); |
|
} |
|
|
|
$title = strtolower($title); |
|
$title = preg_replace('/&.+?;/', '', $title); // kill entities |
|
$title = str_replace('.', '-', $title); |
|
|
|
if ( 'save' == $context ) { |
|
// Convert nbsp, ndash and mdash to hyphens |
|
$title = str_replace( array( '%c2%a0', '%e2%80%93', '%e2%80%94' ), '-', $title ); |
|
|
|
// Strip these characters entirely |
|
$title = str_replace( array( |
|
// iexcl and iquest |
|
'%c2%a1', '%c2%bf', |
|
// angle quotes |
|
'%c2%ab', '%c2%bb', '%e2%80%b9', '%e2%80%ba', |
|
// curly quotes |
|
'%e2%80%98', '%e2%80%99', '%e2%80%9c', '%e2%80%9d', |
|
'%e2%80%9a', '%e2%80%9b', '%e2%80%9e', '%e2%80%9f', |
|
// copy, reg, deg, hellip and trade |
|
'%c2%a9', '%c2%ae', '%c2%b0', '%e2%80%a6', '%e2%84%a2', |
|
// acute accents |
|
'%c2%b4', '%cb%8a', '%cc%81', '%cd%81', |
|
// grave accent, macron, caron |
|
'%cc%80', '%cc%84', '%cc%8c', |
|
), '', $title ); |
|
|
|
// Convert times to x |
|
$title = str_replace( '%c3%97', 'x', $title ); |
|
} |
|
|
|
$title = preg_replace('/[^%a-z0-9 _-]/', '', $title); |
|
$title = preg_replace('/\s+/', '-', $title); |
|
$title = preg_replace('|-+|', '-', $title); |
|
$title = trim($title, '-'); |
|
|
|
return $title; |
|
} |
|
|
|
/** |
|
* 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. |
|
* |
|
* Also accepts 'RAND()'. |
|
* |
|
* @since 2.5.1 |
|
* |
|
* @param string $orderby Order by clause to be validated. |
|
* @return string|bool Returns $orderby if valid, false otherwise. |
|
*/ |
|
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; |
|
} |
|
|
|
/** |
|
* Sanitizes an HTML classname to ensure it only contains valid characters. |
|
* |
|
* Strips the string down to A-Z,a-z,0-9,_,-. If this results in an empty |
|
* string then it will return the alternative value supplied. |
|
* |
|
* @todo Expand to support the full range of CDATA that a class attribute can contain. |
|
* |
|
* @since 2.8.0 |
|
* |
|
* @param string $class The classname to be sanitized |
|
* @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 |
|
*/ |
|
function sanitize_html_class( $class, $fallback = '' ) { |
|
//Strip out any % encoded octets |
|
$sanitized = preg_replace( '|%[a-fA-F0-9][a-fA-F0-9]|', '', $class ); |
|
|
|
//Limit to A-Z,a-z,0-9,_,- |
|
$sanitized = preg_replace( '/[^A-Za-z0-9_-]/', '', $sanitized ); |
|
|
|
if ( '' == $sanitized ) |
|
$sanitized = $fallback; |
|
|
|
/** |
|
* Filter a sanitized HTML class string. |
|
* |
|
* @since 2.8.0 |
|
* |
|
* @param string $sanitized The sanitized HTML class. |
|
* @param string $class HTML class before sanitization. |
|
* @param string $fallback The fallback string. |
|
*/ |
|
return apply_filters( 'sanitize_html_class', $sanitized, $class, $fallback ); |
|
} |
|
|
|
/** |
|
* Converts a number of characters from a string. |
|
* |
|
* Metadata tags `<title>` and `<category>` are removed, `<br>` and `<hr>` are |
|
* converted into correct XHTML and Unicode characters are converted to the |
|
* valid range. |
|
* |
|
* @since 0.71 |
|
* |
|
* @param string $content String of characters to be converted. |
|
* @param string $deprecated Not used. |
|
* @return string Converted string. |
|
*/ |
|
function convert_chars($content, $deprecated = '') { |
|
if ( !empty( $deprecated ) ) |
|
_deprecated_argument( __FUNCTION__, '0.71' ); |
|
|
|
// Translation of invalid Unicode references range to valid range |
|
$wp_htmltranswinuni = array( |
|
'€' => '€', // the Euro sign |
|
'' => '', |
|
'‚' => '‚', // these are Windows CP1252 specific characters |
|
'ƒ' => 'ƒ', // they would look weird on non-Windows browsers |
|
'„' => '„', |
|
'…' => '…', |
|
'†' => '†', |
|
'‡' => '‡', |
|
'ˆ' => 'ˆ', |
|
'‰' => '‰', |
|
'Š' => 'Š', |
|
'‹' => '‹', |
|
'Œ' => 'Œ', |
|
'' => '', |
|
'Ž' => 'Ž', |
|
'' => '', |
|
'' => '', |
|
'‘' => '‘', |
|
'’' => '’', |
|
'“' => '“', |
|
'”' => '”', |
|
'•' => '•', |
|
'–' => '–', |
|
'—' => '—', |
|
'˜' => '˜', |
|
'™' => '™', |
|
'š' => 'š', |
|
'›' => '›', |
|
'œ' => 'œ', |
|
'' => '', |
|
'ž' => 'ž', |
|
'Ÿ' => 'Ÿ' |
|
); |
|
|
|
// Remove metadata tags |
|
$content = preg_replace('/<title>(.+?)<\/title>/','',$content); |
|
$content = preg_replace('/<category>(.+?)<\/category>/','',$content); |
|
|
|
// Converts lone & characters into & (a.k.a. &) |
|
$content = preg_replace('/&([^#])(?![a-z1-4]{1,8};)/i', '&$1', $content); |
|
|
|
// Fix Word pasting |
|
$content = strtr($content, $wp_htmltranswinuni); |
|
|
|
// Just a little XHTML help |
|
$content = str_replace('<br>', '<br />', $content); |
|
$content = str_replace('<hr>', '<hr />', $content); |
|
|
|
return $content; |
|
} |
|
|
|
/** |
|
* Balances tags if forced to, or if the 'use_balanceTags' option is set to true. |
|
* |
|
* @since 0.71 |
|
* |
|
* @param string $text Text to be balanced |
|
* @param bool $force If true, forces balancing, ignoring the value of the option. Default false. |
|
* @return string Balanced text |
|
*/ |
|
function balanceTags( $text, $force = false ) { |
|
if ( $force || get_option('use_balanceTags') == 1 ) { |
|
return force_balance_tags( $text ); |
|
} else { |
|
return $text; |
|
} |
|
} |
|
|
|
/** |
|
* Balances tags of string using a modified stack. |
|
* |
|
* @since 2.0.4 |
|
* |
|
* @author Leonard Lin <leonard@acm.org> |
|
* @license GPL |
|
* @copyright November 4, 2001 |
|
* @version 1.1 |
|
* @todo Make better - change loop condition to $text in 1.2 |
|
* @internal Modified by Scott Reilly (coffee2code) 02 Aug 2004 |
|
* 1.1 Fixed handling of append/stack pop order of end text |
|
* Added Cleaning Hooks |
|
* 1.0 First Version |
|
* |
|
* @param string $text Text to be balanced. |
|
* @return string Balanced text. |
|
*/ |
|
function force_balance_tags( $text ) { |
|
$tagstack = array(); |
|
$stacksize = 0; |
|
$tagqueue = ''; |
|
$newtext = ''; |
|
// Known single-entity/self-closing tags |
|
$single_tags = array( 'area', 'base', 'basefont', 'br', 'col', 'command', 'embed', 'frame', 'hr', 'img', 'input', 'isindex', 'link', 'meta', 'param', 'source' ); |
|
// Tags that can be immediately nested within themselves |
|
$nestable_tags = array( 'blockquote', 'div', 'object', 'q', 'span' ); |
|
|
|
// WP bug fix for comments - in case you REALLY meant to type '< !--' |
|
$text = str_replace('< !--', '< !--', $text); |
|
// WP bug fix for LOVE <3 (and other situations with '<' before a number) |
|
$text = preg_replace('#<([0-9]{1})#', '<$1', $text); |
|
|
|
while ( preg_match("/<(\/?[\w:]*)\s*([^>]*)>/", $text, $regex) ) { |
|
$newtext .= $tagqueue; |
|
|
|
$i = strpos($text, $regex[0]); |
|
$l = strlen($regex[0]); |
|
|
|
// clear the shifter |
|
$tagqueue = ''; |
|
// Pop or Push |
|
if ( isset($regex[1][0]) && '/' == $regex[1][0] ) { // End Tag |
|
$tag = strtolower(substr($regex[1],1)); |
|
// if too many closing tags |
|
if( $stacksize <= 0 ) { |
|
$tag = ''; |
|
// or close to be safe $tag = '/' . $tag; |
|
} |
|
// if stacktop value = tag close value then pop |
|
elseif ( $tagstack[$stacksize - 1] == $tag ) { // found closing tag |
|
$tag = '</' . $tag . '>'; // Close Tag |
|
// Pop |
|
array_pop( $tagstack ); |
|
$stacksize--; |
|
} else { // closing tag not at top, search for it |
|
for ( $j = $stacksize-1; $j >= 0; $j-- ) { |
|
if ( $tagstack[$j] == $tag ) { |
|
// add tag to tagqueue |
|
for ( $k = $stacksize-1; $k >= $j; $k--) { |
|
$tagqueue .= '</' . array_pop( $tagstack ) . '>'; |
|
$stacksize--; |
|
} |
|
break; |
|
} |
|
} |
|
$tag = ''; |
|
} |
|
} else { // Begin Tag |
|
$tag = strtolower($regex[1]); |
|
|
|
// Tag Cleaning |
|
|
|
// If it's an empty tag "< >", do nothing |
|
if ( '' == $tag ) { |
|
// do nothing |
|
} |
|
// ElseIf it presents itself as a self-closing tag... |
|
elseif ( substr( $regex[2], -1 ) == '/' ) { |
|
// ...but it isn't a known single-entity self-closing tag, then don't let it be treated as such and |
|
// immediately close it with a closing tag (the tag will encapsulate no text as a result) |
|
if ( ! in_array( $tag, $single_tags ) ) |
|
$regex[2] = trim( substr( $regex[2], 0, -1 ) ) . "></$tag"; |
|
} |
|
// ElseIf it's a known single-entity tag but it doesn't close itself, do so |
|
elseif ( in_array($tag, $single_tags) ) { |
|
$regex[2] .= '/'; |
|
} |
|
// Else it's not a single-entity tag |
|
else { |
|
// If the top of the stack is the same as the tag we want to push, close previous tag |
|
if ( $stacksize > 0 && !in_array($tag, $nestable_tags) && $tagstack[$stacksize - 1] == $tag ) { |
|
$tagqueue = '</' . array_pop( $tagstack ) . '>'; |
|
$stacksize--; |
|
} |
|
$stacksize = array_push( $tagstack, $tag ); |
|
} |
|
|
|
// Attributes |
|
$attributes = $regex[2]; |
|
if( ! empty( $attributes ) && $attributes[0] != '>' ) |
|
$attributes = ' ' . $attributes; |
|
|
|
$tag = '<' . $tag . $attributes . '>'; |
|
//If already queuing a close tag, then put this tag on, too |
|
if ( !empty($tagqueue) ) { |
|
$tagqueue .= $tag; |
|
$tag = ''; |
|
} |
|
} |
|
$newtext .= substr($text, 0, $i) . $tag; |
|
$text = substr($text, $i + $l); |
|
} |
|
|
|
// Clear Tag Queue |
|
$newtext .= $tagqueue; |
|
|
|
// Add Remaining text |
|
$newtext .= $text; |
|
|
|
// Empty Stack |
|
while( $x = array_pop($tagstack) ) |
|
$newtext .= '</' . $x . '>'; // Add remaining tags to close |
|
|
|
// WP fix for the bug with HTML comments |
|
$newtext = str_replace("< !--","<!--",$newtext); |
|
$newtext = str_replace("< !--","< !--",$newtext); |
|
|
|
return $newtext; |
|
} |
|
|
|
/** |
|
* Acts on text which is about to be edited. |
|
* |
|
* The $content is run through esc_textarea(), which uses htmlspecialchars() |
|
* to convert special characters to HTML entities. If $richedit is set to true, |
|
* it is simply a holder for the 'format_to_edit' filter. |
|
* |
|
* @since 0.71 |
|
* |
|
* @param string $content The text about to be edited. |
|
* @param bool $richedit Whether the $content should not pass through htmlspecialchars(). Default false (meaning it will be passed). |
|
* @return string The text after the filter (and possibly htmlspecialchars()) has been run. |
|
*/ |
|
function format_to_edit( $content, $richedit = false ) { |
|
/** |
|
* Filter the text to be formatted for editing. |
|
* |
|
* @since 1.2.0 |
|
* |
|
* @param string $content The text, prior to formatting for editing. |
|
*/ |
|
$content = apply_filters( 'format_to_edit', $content ); |
|
if ( ! $richedit ) |
|
$content = esc_textarea( $content ); |
|
return $content; |
|
} |
|
|
|
/** |
|
* Add leading zeros when necessary. |
|
* |
|
* If you set the threshold to '4' and the number is '10', then you will get |
|
* back '0010'. If you set the threshold to '4' and the number is '5000', then you |
|
* will get back '5000'. |
|
* |
|
* Uses sprintf to append the amount of zeros based on the $threshold parameter |
|
* and the size of the number. If the number is large enough, then no zeros will |
|
* be appended. |
|
* |
|
* @since 0.71 |
|
* |
|
* @param mixed $number Number to append zeros to if not greater than threshold. |
|
* @param int $threshold Digit places number needs to be to not have zeros added. |
|
* @return string Adds leading zeros to number if needed. |
|
*/ |
|
function zeroise($number, $threshold) { |
|
return sprintf('%0'.$threshold.'s', $number); |
|
} |
|
|
|
/** |
|
* Adds backslashes before letters and before a number at the start of a string. |
|
* |
|
* @since 0.71 |
|
* |
|
* @param string $string Value to which backslashes will be added. |
|
* @return string String with backslashes inserted. |
|
*/ |
|
function backslashit($string) { |
|
if ( isset( $string[0] ) && $string[0] >= '0' && $string[0] <= '9' ) |
|
$string = '\\\\' . $string; |
|
return addcslashes( $string, 'A..Za..z' ); |
|
} |
|
|
|
/** |
|
* Appends a trailing slash. |
|
* |
|
* 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 |
|
* |
|
* @param string $string What to add the trailing slash to. |
|
* @return string String with trailing slash added. |
|
*/ |
|
function trailingslashit( $string ) { |
|
return untrailingslashit( $string ) . '/'; |
|
} |
|
|
|
/** |
|
* 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 slashes from. |
|
* @return string String without the trailing slashes. |
|
*/ |
|
function untrailingslashit( $string ) { |
|
return rtrim( $string, '/\\' ); |
|
} |
|
|
|
/** |
|
* Adds slashes to escape strings. |
|
* |
|
* Slashes will first be removed if magic_quotes_gpc is set, see {@link |
|
* http://www.php.net/magic_quotes} for more details. |
|
* |
|
* @since 0.71 |
|
* |
|
* @param string $gpc The string returned from HTTP request data. |
|
* @return string Returns a string escaped with slashes. |
|
*/ |
|
function addslashes_gpc($gpc) { |
|
if ( get_magic_quotes_gpc() ) |
|
$gpc = stripslashes($gpc); |
|
|
|
return wp_slash($gpc); |
|
} |
|
|
|
/** |
|
* Navigates through an array and removes slashes from the values. |
|
* |
|
* If an array is passed, the array_map() function causes a callback to pass the |
|
* value back to the function. The slashes from this value will removed. |
|
* |
|
* @since 2.0.0 |
|
* |
|
* @param mixed $value The value to be stripped. |
|
* @return mixed Stripped value. |
|
*/ |
|
function stripslashes_deep($value) { |
|
if ( is_array($value) ) { |
|
$value = array_map('stripslashes_deep', $value); |
|
} elseif ( is_object($value) ) { |
|
$vars = get_object_vars( $value ); |
|
foreach ($vars as $key=>$data) { |
|
$value->{$key} = stripslashes_deep( $data ); |
|
} |
|
} elseif ( is_string( $value ) ) { |
|
$value = stripslashes($value); |
|
} |
|
|
|
return $value; |
|
} |
|
|
|
/** |
|
* Navigates through an array and encodes the values to be used in a URL. |
|
* |
|
* |
|
* @since 2.2.0 |
|
* |
|
* @param array|string $value The array or string to be encoded. |
|
* @return array|string $value The encoded array (or string from the callback). |
|
*/ |
|
function urlencode_deep($value) { |
|
$value = is_array($value) ? array_map('urlencode_deep', $value) : urlencode($value); |
|
return $value; |
|
} |
|
|
|
/** |
|
* Navigates through an array and raw encodes the values to be used in a URL. |
|
* |
|
* @since 3.4.0 |
|
* |
|
* @param array|string $value The array or string to be encoded. |
|
* @return array|string $value The encoded array (or string from the callback). |
|
*/ |
|
function rawurlencode_deep( $value ) { |
|
return is_array( $value ) ? array_map( 'rawurlencode_deep', $value ) : rawurlencode( $value ); |
|
} |
|
|
|
/** |
|
* Converts email addresses characters to HTML entities to block spam bots. |
|
* |
|
* @since 0.71 |
|
* |
|
* @param string $email_address Email address. |
|
* @param int $hex_encoding Optional. Set to 1 to enable hex encoding. |
|
* @return string Converted email address. |
|
*/ |
|
function antispambot( $email_address, $hex_encoding = 0 ) { |
|
$email_no_spam_address = ''; |
|
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] ) . ';'; |
|
} elseif ( $j == 1 ) { |
|
$email_no_spam_address .= $email_address[$i]; |
|
} elseif ( $j == 2 ) { |
|
$email_no_spam_address .= '%' . zeroise( dechex( ord( $email_address[$i] ) ), 2 ); |
|
} |
|
} |
|
|
|
$email_no_spam_address = str_replace( '@', '@', $email_no_spam_address ); |
|
|
|
return $email_no_spam_address; |
|
} |
|
|
|
/** |
|
* Callback to convert URI match to HTML A element. |
|
* |
|
* This function was backported from 2.5.0 to 2.3.2. Regex callback for {@link |
|
* make_clickable()}. |
|
* |
|
* @since 2.3.2 |
|
* @access private |
|
* |
|
* @param array $matches Single Regex Match. |
|
* @return string HTML A element with URI address. |
|
*/ |
|
function _make_url_clickable_cb($matches) { |
|
$url = $matches[2]; |
|
|
|
if ( ')' == $matches[3] && strpos( $url, '(' ) ) { |
|
// If the trailing character is a closing parethesis, and the URL has an opening parenthesis in it, add the closing parenthesis to the URL. |
|
// Then we can let the parenthesis balancer do its thing below. |
|
$url .= $matches[3]; |
|
$suffix = ''; |
|
} else { |
|
$suffix = $matches[3]; |
|
} |
|
|
|
// Include parentheses in the URL only if paired |
|
while ( substr_count( $url, '(' ) < substr_count( $url, ')' ) ) { |
|
$suffix = strrchr( $url, ')' ) . $suffix; |
|
$url = substr( $url, 0, strrpos( $url, ')' ) ); |
|
} |
|
|
|
$url = esc_url($url); |
|
if ( empty($url) ) |
|
return $matches[0]; |
|
|
|
return $matches[1] . "<a href=\"$url\" rel=\"nofollow\">$url</a>" . $suffix; |
|
} |
|
|
|
/** |
|
* Callback to convert URL match to HTML A element. |
|
* |
|
* This function was backported from 2.5.0 to 2.3.2. Regex callback for {@link |
|
* make_clickable()}. |
|
* |
|
* @since 2.3.2 |
|
* @access private |
|
* |
|
* @param array $matches Single Regex Match. |
|
* @return string HTML A element with URL address. |
|
*/ |
|
function _make_web_ftp_clickable_cb($matches) { |
|
$ret = ''; |
|
$dest = $matches[2]; |
|
$dest = 'http://' . $dest; |
|
$dest = esc_url($dest); |
|
if ( empty($dest) ) |
|
return $matches[0]; |
|
|
|
// removed trailing [.,;:)] from URL |
|
if ( in_array( substr($dest, -1), array('.', ',', ';', ':', ')') ) === true ) { |
|
$ret = substr($dest, -1); |
|
$dest = substr($dest, 0, strlen($dest)-1); |
|
} |
|
return $matches[1] . "<a href=\"$dest\" rel=\"nofollow\">$dest</a>$ret"; |
|
} |
|
|
|
/** |
|
* Callback to convert email address match to HTML A element. |
|
* |
|
* This function was backported from 2.5.0 to 2.3.2. Regex callback for {@link |
|
* make_clickable()}. |
|
* |
|
* @since 2.3.2 |
|
* @access private |
|
* |
|
* @param array $matches Single Regex Match. |
|
* @return string HTML A element with email address. |
|
*/ |
|
function _make_email_clickable_cb($matches) { |
|
$email = $matches[2] . '@' . $matches[3]; |
|
return $matches[1] . "<a href=\"mailto:$email\">$email</a>"; |
|
} |
|
|
|
/** |
|
* Convert plaintext URI to HTML links. |
|
* |
|
* Converts URI, www and ftp, and email addresses. Finishes by fixing links |
|
* within links. |
|
* |
|
* @since 0.71 |
|
* |
|
* @param string $text Content to convert URIs. |
|
* @return string Content with converted URIs. |
|
*/ |
|
function make_clickable( $text ) { |
|
$r = ''; |
|
$textarr = preg_split( '/(<[^<>]+>)/', $text, -1, PREG_SPLIT_DELIM_CAPTURE ); // split out HTML tags |
|
$nested_code_pre = 0; // Keep track of how many levels link is nested inside <pre> or <code> |
|
foreach ( $textarr as $piece ) { |
|
|
|
if ( preg_match( '|^<code[\s>]|i', $piece ) || preg_match( '|^<pre[\s>]|i', $piece ) ) |
|
$nested_code_pre++; |
|
elseif ( ( '</code>' === strtolower( $piece ) || '</pre>' === strtolower( $piece ) ) && $nested_code_pre ) |
|
$nested_code_pre--; |
|
|
|
if ( $nested_code_pre || empty( $piece ) || ( $piece[0] === '<' && ! preg_match( '|^<\s*[\w]{1,20}+://|', $piece ) ) ) { |
|
$r .= $piece; |
|
continue; |
|
} |
|
|
|
// Long strings might contain expensive edge cases ... |
|
if ( 10000 < strlen( $piece ) ) { |
|
// ... break it up |
|
foreach ( _split_str_by_whitespace( $piece, 2100 ) as $chunk ) { // 2100: Extra room for scheme and leading and trailing paretheses |
|
if ( 2101 < strlen( $chunk ) ) { |
|
$r .= $chunk; // Too big, no whitespace: bail. |
|
} else { |
|
$r .= make_clickable( $chunk ); |
|
} |
|
} |
|
} else { |
|
$ret = " $piece "; // Pad with whitespace to simplify the regexes |
|
|
|
$url_clickable = '~ |
|
([\\s(<.,;:!?]) # 1: Leading whitespace, or punctuation |
|
( # 2: URL |
|
[\\w]{1,20}+:// # Scheme and hier-part prefix |
|
(?=\S{1,2000}\s) # Limit to URLs less than about 2000 characters long |
|
[\\w\\x80-\\xff#%\\~/@\\[\\]*(+=&$-]*+ # Non-punctuation URL character |
|
(?: # Unroll the Loop: Only allow puctuation URL character if followed by a non-punctuation URL character |
|
[\'.,;:!?)] # Punctuation URL character |
|
[\\w\\x80-\\xff#%\\~/@\\[\\]*(+=&$-]++ # Non-punctuation URL character |
|
)* |
|
) |
|
(\)?) # 3: Trailing closing parenthesis (for parethesis balancing post processing) |
|
~xS'; // The regex is a non-anchored pattern and does not have a single fixed starting character. |
|
// Tell PCRE to spend more time optimizing since, when used on a page load, it will probably be used several times. |
|
|
|
$ret = preg_replace_callback( $url_clickable, '_make_url_clickable_cb', $ret ); |
|
|
|
$ret = preg_replace_callback( '#([\s>])((www|ftp)\.[\w\\x80-\\xff\#$%&~/.\-;:=,?@\[\]+]+)#is', '_make_web_ftp_clickable_cb', $ret ); |
|
$ret = preg_replace_callback( '#([\s>])([.0-9a-z_+-]+)@(([0-9a-z-]+\.)+[0-9a-z]{2,})#i', '_make_email_clickable_cb', $ret ); |
|
|
|
$ret = substr( $ret, 1, -1 ); // Remove our whitespace padding. |
|
$r .= $ret; |
|
} |
|
} |
|
|
|
// Cleanup of accidental links within links |
|
$r = preg_replace( '#(<a([ \r\n\t]+[^>]+?>|>))<a [^>]+?>([^>]+?)</a></a>#i', "$1$3</a>", $r ); |
|
return $r; |
|
} |
|
|
|
/** |
|
* Breaks a string into chunks by splitting at whitespace characters. |
|
* The length of each returned chunk is as close to the specified length goal as possible, |
|
* with the caveat that each chunk includes its trailing delimiter. |
|
* Chunks longer than the goal are guaranteed to not have any inner whitespace. |
|
* |
|
* Joining the returned chunks with empty delimiters reconstructs the input string losslessly. |
|
* |
|
* Input string must have no null characters (or eventual transformations on output chunks must not care about null characters) |
|
* |
|
* _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 |
|
* |
|
* @param string $string The string to split. |
|
* @param int $goal The desired chunk length. |
|
* @return array Numeric array of chunks. |
|
*/ |
|
function _split_str_by_whitespace( $string, $goal ) { |
|
$chunks = array(); |
|
|
|
$string_nullspace = strtr( $string, "\r\n\t\v\f ", "\000\000\000\000\000\000" ); |
|
|
|
while ( $goal < strlen( $string_nullspace ) ) { |
|
$pos = strrpos( substr( $string_nullspace, 0, $goal + 1 ), "\000" ); |
|
|
|
if ( false === $pos ) { |
|
$pos = strpos( $string_nullspace, "\000", $goal + 1 ); |
|
if ( false === $pos ) { |
|
break; |
|
} |
|
} |
|
|
|
$chunks[] = substr( $string, 0, $pos + 1 ); |
|
$string = substr( $string, $pos + 1 ); |
|
$string_nullspace = substr( $string_nullspace, $pos + 1 ); |
|
} |
|
|
|
if ( $string ) { |
|
$chunks[] = $string; |
|
} |
|
|
|
return $chunks; |
|
} |
|
|
|
/** |
|
* Adds rel nofollow string to all HTML A elements in content. |
|
* |
|
* @since 1.5.0 |
|
* |
|
* @param string $text Content that may contain HTML A elements. |
|
* @return string Converted content. |
|
*/ |
|
function wp_rel_nofollow( $text ) { |
|
// This is a pre save filter, so text is already escaped. |
|
$text = stripslashes($text); |
|
$text = preg_replace_callback('|<a (.+?)>|i', 'wp_rel_nofollow_callback', $text); |
|
$text = wp_slash($text); |
|
return $text; |
|
} |
|
|
|
/** |
|
* Callback to add rel=nofollow string to HTML A element. |
|
* |
|
* Will remove already existing rel="nofollow" and rel='nofollow' from the |
|
* string to prevent from invalidating (X)HTML. |
|
* |
|
* @since 2.3.0 |
|
* |
|
* @param array $matches Single Match |
|
* @return string HTML A Element with rel nofollow. |
|
*/ |
|
function wp_rel_nofollow_callback( $matches ) { |
|
$text = $matches[1]; |
|
$text = str_replace(array(' rel="nofollow"', " rel='nofollow'"), '', $text); |
|
return "<a $text rel=\"nofollow\">"; |
|
} |
|
|
|
/** |
|
* Convert one smiley code to the icon graphic file equivalent. |
|
* |
|
* Callback handler for {@link convert_smilies()}. |
|
* Looks up one smiley code in the $wpsmiliestrans global array and returns an |
|
* `<img>` string for that smiley. |
|
* |
|
* @global array $wpsmiliestrans |
|
* @since 2.8.0 |
|
* |
|
* @param array $matches Single match. Smiley code to convert to image. |
|
* @return string Image string for smiley. |
|
*/ |
|
function translate_smiley( $matches ) { |
|
global $wpsmiliestrans; |
|
|
|
if ( count( $matches ) == 0 ) |
|
return ''; |
|
|
|
$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. |
|
* |
|
* @since 2.9.0 |
|
* |
|
* @param string $smiley_url URL for the smiley image. |
|
* @param string $img Filename for the smiley image. |
|
* @param string $site_url Site URL, as returned by site_url(). |
|
*/ |
|
$src_url = apply_filters( 'smilies_src', includes_url( "images/smilies/$img" ), $img, site_url() ); |
|
|
|
return sprintf( '<img src="%s" alt="%s" class="wp-smiley" style="height: 1em; max-height: 1em;" />', esc_url( $src_url ), esc_attr( $smiley ) ); |
|
} |
|
|
|
/** |
|
* Convert text equivalent of smilies to images. |
|
* |
|
* Will only convert smilies if the option 'use_smilies' is true and the global |
|
* used in the function isn't empty. |
|
* |
|
* @since 0.71 |
|
* @uses $wp_smiliessearch |
|
* |
|
* @param string $text Content to convert smilies from text. |
|
* @return string Converted content with text smilies replaced with images. |
|
*/ |
|
function convert_smilies( $text ) { |
|
global $wp_smiliessearch; |
|
$output = ''; |
|
if ( get_option( 'use_smilies' ) && ! empty( $wp_smiliessearch ) ) { |
|
// HTML loop taken from texturize function, could possible be consolidated |
|
$textarr = preg_split( '/(<.*>)/U', $text, -1, PREG_SPLIT_DELIM_CAPTURE ); // capture the tags as well as in between |
|
$stop = count( $textarr );// loop stuff |
|
|
|
// Ignore proessing 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] ) { |
|
$content = preg_replace_callback( $wp_smiliessearch, 'translate_smiley', $content ); |
|
} |
|
|
|
// did we exit ignore block |
|
if ( '' != $ignore_block_element && '</' . $ignore_block_element . '>' == $content ) { |
|
$ignore_block_element = ''; |
|
} |
|
|
|
$output .= $content; |
|
} |
|
} else { |
|
// return default text. |
|
$output = $text; |
|
} |
|
return $output; |
|
} |
|
|
|
/** |
|
* Verifies that an email is valid. |
|
* |
|
* Does not grok i18n domains. Not RFC compliant. |
|
* |
|
* @since 0.71 |
|
* |
|
* @param string $email Email address to verify. |
|
* @param boolean $deprecated Deprecated. |
|
* @return string|bool Either false or the valid email address. |
|
*/ |
|
function is_email( $email, $deprecated = false ) { |
|
if ( ! empty( $deprecated ) ) |
|
_deprecated_argument( __FUNCTION__, '3.0' ); |
|
|
|
// Test for the minimum length the email can be |
|
if ( strlen( $email ) < 3 ) { |
|
/** |
|
* Filter whether an email address is valid. |
|
* |
|
* This filter is evaluated under several different contexts, such as 'email_too_short', |
|
* 'email_no_at', 'local_invalid_chars', 'domain_period_sequence', 'domain_period_limits', |
|
* 'domain_no_periods', 'sub_hyphen_limits', 'sub_invalid_chars', or no specific context. |
|
* |
|
* @since 2.8.0 |
|
* |
|
* @param bool $is_email Whether the email address has passed the is_email() checks. Default false. |
|
* @param string $email The email address being checked. |
|
* @param string $message An explanatory message to the user. |
|
* @param string $context Context under which the email was tested. |
|
*/ |
|
return apply_filters( 'is_email', false, $email, 'email_too_short' ); |
|
} |
|
|
|
// Test for an @ character after the first position |
|
if ( strpos( $email, '@', 1 ) === false ) { |
|
/** This filter is documented in wp-includes/formatting.php */ |
|
return apply_filters( 'is_email', false, $email, 'email_no_at' ); |
|
} |
|
|
|
// Split out the local and domain parts |
|
list( $local, $domain ) = explode( '@', $email, 2 ); |
|
|
|
// LOCAL PART |
|
// Test for invalid characters |
|
if ( !preg_match( '/^[a-zA-Z0-9!#$%&\'*+\/=?^_`{|}~\.-]+$/', $local ) ) { |
|
/** This filter is documented in wp-includes/formatting.php */ |
|
return apply_filters( 'is_email', false, $email, 'local_invalid_chars' ); |
|
} |
|
|
|
// DOMAIN PART |
|
// Test for sequences of periods |
|
if ( preg_match( '/\.{2,}/', $domain ) ) { |
|
/** This filter is documented in wp-includes/formatting.php */ |
|
return apply_filters( 'is_email', false, $email, 'domain_period_sequence' ); |
|
} |
|
|
|
// Test for leading and trailing periods and whitespace |
|
if ( trim( $domain, " \t\n\r\0\x0B." ) !== $domain ) { |
|
/** This filter is documented in wp-includes/formatting.php */ |
|
return apply_filters( 'is_email', false, $email, 'domain_period_limits' ); |
|
} |
|
|
|
// Split the domain into subs |
|
$subs = explode( '.', $domain ); |
|
|
|
// Assume the domain will have at least two subs |
|
if ( 2 > count( $subs ) ) { |
|
/** This filter is documented in wp-includes/formatting.php */ |
|
return apply_filters( 'is_email', false, $email, 'domain_no_periods' ); |
|
} |
|
|
|
// Loop through each sub |
|
foreach ( $subs as $sub ) { |
|
// Test for leading and trailing hyphens and whitespace |
|
if ( trim( $sub, " \t\n\r\0\x0B-" ) !== $sub ) { |
|
/** This filter is documented in wp-includes/formatting.php */ |
|
return apply_filters( 'is_email', false, $email, 'sub_hyphen_limits' ); |
|
} |
|
|
|
// Test for invalid characters |
|
if ( !preg_match('/^[a-z0-9-]+$/i', $sub ) ) { |
|
/** This filter is documented in wp-includes/formatting.php */ |
|
return apply_filters( 'is_email', false, $email, 'sub_invalid_chars' ); |
|
} |
|
} |
|
|
|
// Congratulations your email made it! |
|
/** This filter is documented in wp-includes/formatting.php */ |
|
return apply_filters( 'is_email', $email, $email, null ); |
|
} |
|
|
|
/** |
|
* Convert to ASCII from email subjects. |
|
* |
|
* @since 1.2.0 |
|
* |
|
* @param string $string Subject line |
|
* @return string Converted string to ASCII |
|
*/ |
|
function wp_iso_descrambler($string) { |
|
/* this may only work with iso-8859-1, I'm afraid */ |
|
if (!preg_match('#\=\?(.+)\?Q\?(.+)\?\=#i', $string, $matches)) { |
|
return $string; |
|
} else { |
|
$subject = str_replace('_', ' ', $matches[2]); |
|
$subject = preg_replace_callback('#\=([0-9a-f]{2})#i', '_wp_iso_convert', $subject); |
|
return $subject; |
|
} |
|
} |
|
|
|
/** |
|
* Helper function to convert hex encoded chars to ASCII |
|
* |
|
* @since 3.1.0 |
|
* @access private |
|
* |
|
* @param array $match The preg_replace_callback matches array |
|
* @return string Converted chars |
|
*/ |
|
function _wp_iso_convert( $match ) { |
|
return chr( hexdec( strtolower( $match[1] ) ) ); |
|
} |
|
|
|
/** |
|
* Returns a date in the GMT equivalent. |
|
* |
|
* Requires and returns a date in the Y-m-d H:i:s format. If there is a |
|
* timezone_string available, the date is assumed to be in that timezone, |
|
* otherwise it simply subtracts the value of the 'gmt_offset' option. Return |
|
* format can be overridden using the $format parameter. |
|
* |
|
* @since 1.2.0 |
|
* |
|
* @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. |
|
*/ |
|
function get_gmt_from_date( $string, $format = 'Y-m-d H:i:s' ) { |
|
$tz = get_option( 'timezone_string' ); |
|
if ( $tz ) { |
|
$datetime = date_create( $string, new DateTimeZone( $tz ) ); |
|
if ( ! $datetime ) |
|
return gmdate( $format, 0 ); |
|
$datetime->setTimezone( new DateTimeZone( 'UTC' ) ); |
|
$string_gmt = $datetime->format( $format ); |
|
} else { |
|
if ( ! preg_match( '#([0-9]{1,4})-([0-9]{1,2})-([0-9]{1,2}) ([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2})#', $string, $matches ) ) |
|
return gmdate( $format, 0 ); |
|
$string_time = gmmktime( $matches[4], $matches[5], $matches[6], $matches[2], $matches[3], $matches[1] ); |
|
$string_gmt = gmdate( $format, $string_time - get_option( 'gmt_offset' ) * HOUR_IN_SECONDS ); |
|
} |
|
return $string_gmt; |
|
} |
|
|
|
/** |
|
* Converts a GMT date into the correct format for the blog. |
|
* |
|
* Requires and returns a date in the Y-m-d H:i:s format. If there is a |
|
* timezone_string available, the returned date is in that timezone, otherwise |
|
* it simply adds the value of gmt_offset. Return format can be overridden |
|
* using the $format parameter |
|
* |
|
* @since 1.2.0 |
|
* |
|
* @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 Formatted date relative to the timezone / GMT offset. |
|
*/ |
|
function get_date_from_gmt( $string, $format = 'Y-m-d H:i:s' ) { |
|
$tz = get_option( 'timezone_string' ); |
|
if ( $tz ) { |
|
$datetime = date_create( $string, new DateTimeZone( 'UTC' ) ); |
|
if ( ! $datetime ) |
|
return date( $format, 0 ); |
|
$datetime->setTimezone( new DateTimeZone( $tz ) ); |
|
$string_localtime = $datetime->format( $format ); |
|
} else { |
|
if ( ! preg_match('#([0-9]{1,4})-([0-9]{1,2})-([0-9]{1,2}) ([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2})#', $string, $matches) ) |
|
return date( $format, 0 ); |
|
$string_time = gmmktime( $matches[4], $matches[5], $matches[6], $matches[2], $matches[3], $matches[1] ); |
|
$string_localtime = gmdate( $format, $string_time + get_option( 'gmt_offset' ) * HOUR_IN_SECONDS ); |
|
} |
|
return $string_localtime; |
|
} |
|
|
|
/** |
|
* Computes an offset in seconds from an iso8601 timezone. |
|
* |
|
* @since 1.5.0 |
|
* |
|
* @param string $timezone Either 'Z' for 0 offset or '±hhmm'. |
|
* @return int|float The offset in seconds. |
|
*/ |
|
function iso8601_timezone_to_offset($timezone) { |
|
// $timezone is either 'Z' or '[+|-]hhmm' |
|
if ($timezone == 'Z') { |
|
$offset = 0; |
|
} else { |
|
$sign = (substr($timezone, 0, 1) == '+') ? 1 : -1; |
|
$hours = intval(substr($timezone, 1, 2)); |
|
$minutes = intval(substr($timezone, 3, 4)) / 60; |
|
$offset = $sign * HOUR_IN_SECONDS * ($hours + $minutes); |
|
} |
|
return $offset; |
|
} |
|
|
|
/** |
|
* Converts an iso8601 date to MySQL DateTime format used by post_date[_gmt]. |
|
* |
|
* @since 1.5.0 |
|
* |
|
* @param string $date_string Date and time in ISO 8601 format {@link http://en.wikipedia.org/wiki/ISO_8601}. |
|
* @param string $timezone Optional. If set to GMT returns the time minus gmt_offset. Default is 'user'. |
|
* @return string The date and time in MySQL DateTime format - Y-m-d H:i:s. |
|
*/ |
|
function iso8601_to_datetime($date_string, $timezone = 'user') { |
|
$timezone = strtolower($timezone); |
|
|
|
if ($timezone == 'gmt') { |
|
|
|
preg_match('#([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}#', $date_string, $date_bits); |
|
|
|
if (!empty($date_bits[7])) { // we have a timezone, so let's compute an offset |
|
$offset = iso8601_timezone_to_offset($date_bits[7]); |
|
} else { // we don't have a timezone, so we assume user local timezone (not server's!) |
|
$offset = HOUR_IN_SECONDS * get_option('gmt_offset'); |
|
} |
|
|
|
$timestamp = gmmktime($date_bits[4], $date_bits[5], $date_bits[6], $date_bits[2], $date_bits[3], $date_bits[1]); |
|
$timestamp -= $offset; |
|
|
|
return gmdate('Y-m-d H:i:s', $timestamp); |
|
|
|
} elseif ($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); |
|
} |
|
} |
|
|
|
/** |
|
* Adds a element attributes to open links in new windows. |
|
* |
|
* Comment text in popup windows should be filtered through this. Right now it's |
|
* a moderately dumb function, ideally it would detect whether a target or rel |
|
* attribute was already there and adjust its actions accordingly. |
|
* |
|
* @since 0.71 |
|
* |
|
* @param string $text Content to replace links to open in a new window. |
|
* @return string Content that has filtered links. |
|
*/ |
|
function popuplinks($text) { |
|
$text = preg_replace('/<a (.+?)>/i', "<a $1 target='_blank' rel='external'>", $text); |
|
return $text; |
|
} |
|
|
|
/** |
|
* Strips out all characters that are not allowable in an email. |
|
* |
|
* @since 1.5.0 |
|
* |
|
* @param string $email Email address to filter. |
|
* @return string Filtered email address. |
|
*/ |
|
function sanitize_email( $email ) { |
|
// Test for the minimum length the email can be |
|
if ( strlen( $email ) < 3 ) { |
|
/** |
|
* Filter a sanitized email address. |
|
* |
|
* This filter is evaluated under several contexts, including 'email_too_short', |
|
* 'email_no_at', 'local_invalid_chars', 'domain_period_sequence', 'domain_period_limits', |
|
* 'domain_no_periods', 'domain_no_valid_subs', or no context. |
|
* |
|
* @since 2.8.0 |
|
* |
|
* @param string $email The sanitized email address. |
|
* @param string $email The email address, as provided to sanitize_email(). |
|
* @param string $message A message to pass to the user. |
|
*/ |
|
return apply_filters( 'sanitize_email', '', $email, 'email_too_short' ); |
|
} |
|
|
|
// Test for an @ character after the first position |
|
if ( strpos( $email, '@', 1 ) === false ) { |
|
/** This filter is documented in wp-includes/formatting.php */ |
|
return apply_filters( 'sanitize_email', '', $email, 'email_no_at' ); |
|
} |
|
|
|
// Split out the local and domain parts |
|
list( $local, $domain ) = explode( '@', $email, 2 ); |
|
|
|
// LOCAL PART |
|
// Test for invalid characters |
|
$local = preg_replace( '/[^a-zA-Z0-9!#$%&\'*+\/=?^_`{|}~\.-]/', '', $local ); |
|
if ( '' === $local ) { |
|
/** This filter is documented in wp-includes/formatting.php */ |
|
return apply_filters( 'sanitize_email', '', $email, 'local_invalid_chars' ); |
|
} |
|
|
|
// DOMAIN PART |
|
// Test for sequences of periods |
|
$domain = preg_replace( '/\.{2,}/', '', $domain ); |
|
if ( '' === $domain ) { |
|
/** This filter is documented in wp-includes/formatting.php */ |
|
return apply_filters( 'sanitize_email', '', $email, 'domain_period_sequence' ); |
|
} |
|
|
|
// Test for leading and trailing periods and whitespace |
|
$domain = trim( $domain, " \t\n\r\0\x0B." ); |
|
if ( '' === $domain ) { |
|
/** This filter is documented in wp-includes/formatting.php */ |
|
return apply_filters( 'sanitize_email', '', $email, 'domain_period_limits' ); |
|
} |
|
|
|
// Split the domain into subs |
|
$subs = explode( '.', $domain ); |
|
|
|
// Assume the domain will have at least two subs |
|
if ( 2 > count( $subs ) ) { |
|
/** This filter is documented in wp-includes/formatting.php */ |
|
return apply_filters( 'sanitize_email', '', $email, 'domain_no_periods' ); |
|
} |
|
|
|
// Create an array that will contain valid subs |
|
$new_subs = array(); |
|
|
|
// Loop through each sub |
|
foreach ( $subs as $sub ) { |
|
// Test for leading and trailing hyphens |
|
$sub = trim( $sub, " \t\n\r\0\x0B-" ); |
|
|
|
// Test for invalid characters |
|
$sub = preg_replace( '/[^a-z0-9-]+/i', '', $sub ); |
|
|
|
// If there's anything left, add it to the valid subs |
|
if ( '' !== $sub ) { |
|
$new_subs[] = $sub; |
|
} |
|
} |
|
|
|
// If there aren't 2 or more valid subs |
|
if ( 2 > count( $new_subs ) ) { |
|
/** This filter is documented in wp-includes/formatting.php */ |
|
return apply_filters( 'sanitize_email', '', $email, 'domain_no_valid_subs' ); |
|
} |
|
|
|
// Join valid subs into the new domain |
|
$domain = join( '.', $new_subs ); |
|
|
|
// Put the email back together |
|
$email = $local . '@' . $domain; |
|
|
|
// Congratulations your email made it! |
|
/** This filter is documented in wp-includes/formatting.php */ |
|
return apply_filters( 'sanitize_email', $email, $email, null ); |
|
} |
|
|
|
/** |
|
* Determines the difference between two timestamps. |
|
* |
|
* The difference is returned in a human readable format such as "1 hour", |
|
* "5 mins", "2 days". |
|
* |
|
* @since 1.5.0 |
|
* |
|
* @param int $from Unix timestamp from which the difference begins. |
|
* @param int $to Optional. Unix timestamp to end the time difference. Default becomes time() if not set. |
|
* @return string Human readable time difference. |
|
*/ |
|
function human_time_diff( $from, $to = '' ) { |
|
if ( empty( $to ) ) { |
|
$to = time(); |
|
} |
|
|
|
$diff = (int) abs( $to - $from ); |
|
|
|
if ( $diff < HOUR_IN_SECONDS ) { |
|
$mins = round( $diff / MINUTE_IN_SECONDS ); |
|
if ( $mins <= 1 ) |
|
$mins = 1; |
|
/* translators: min=minute */ |
|
$since = sprintf( _n( '%s min', '%s mins', $mins ), $mins ); |
|
} elseif ( $diff < DAY_IN_SECONDS && $diff >= HOUR_IN_SECONDS ) { |
|
$hours = round( $diff / HOUR_IN_SECONDS ); |
|
if ( $hours <= 1 ) |
|
$hours = 1; |
|
$since = sprintf( _n( '%s hour', '%s hours', $hours ), $hours ); |
|
} elseif ( $diff < WEEK_IN_SECONDS && $diff >= DAY_IN_SECONDS ) { |
|
$days = round( $diff / DAY_IN_SECONDS ); |
|
if ( $days <= 1 ) |
|
$days = 1; |
|
$since = sprintf( _n( '%s day', '%s days', $days ), $days ); |
|
} elseif ( $diff < 30 * DAY_IN_SECONDS && $diff >= WEEK_IN_SECONDS ) { |
|
$weeks = round( $diff / WEEK_IN_SECONDS ); |
|
if ( $weeks <= 1 ) |
|
$weeks = 1; |
|
$since = sprintf( _n( '%s week', '%s weeks', $weeks ), $weeks ); |
|
} elseif ( $diff < YEAR_IN_SECONDS && $diff >= 30 * DAY_IN_SECONDS ) { |
|
$months = round( $diff / ( 30 * DAY_IN_SECONDS ) ); |
|
if ( $months <= 1 ) |
|
$months = 1; |
|
$since = sprintf( _n( '%s month', '%s months', $months ), $months ); |
|
} elseif ( $diff >= YEAR_IN_SECONDS ) { |
|
$years = round( $diff / YEAR_IN_SECONDS ); |
|
if ( $years <= 1 ) |
|
$years = 1; |
|
$since = sprintf( _n( '%s year', '%s years', $years ), $years ); |
|
} |
|
|
|
/** |
|
* 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 ); |
|
} |
|
|
|
/** |
|
* Generates an excerpt from the content, if needed. |
|
* |
|
* The excerpt word amount will be 55 words and if the amount is greater than |
|
* that, then the string ' […]' will be appended to the excerpt. If the string |
|
* is less than 55 words, then the content will be returned as is. |
|
* |
|
* The 55 word limit can be modified by plugins/themes using the excerpt_length filter |
|
* The ' […]' string can be modified by plugins/themes using the excerpt_more filter |
|
* |
|
* @since 1.5.0 |
|
* |
|
* @param string $text Optional. The excerpt. If set to empty, an excerpt is generated. |
|
* @return string The excerpt. |
|
*/ |
|
function wp_trim_excerpt($text = '') { |
|
$raw_excerpt = $text; |
|
if ( '' == $text ) { |
|
$text = get_the_content(''); |
|
|
|
$text = strip_shortcodes( $text ); |
|
|
|
/** This filter is documented in wp-includes/post-template.php */ |
|
$text = apply_filters( 'the_content', $text ); |
|
$text = str_replace(']]>', ']]>', $text); |
|
|
|
/** |
|
* Filter the number of words in an excerpt. |
|
* |
|
* @since 2.7.0 |
|
* |
|
* @param int $number The number of words. Default 55. |
|
*/ |
|
$excerpt_length = apply_filters( 'excerpt_length', 55 ); |
|
/** |
|
* Filter the string in the "more" link displayed after a trimmed excerpt. |
|
* |
|
* @since 2.9.0 |
|
* |
|
* @param string $more_string The string shown within the more link. |
|
*/ |
|
$excerpt_more = apply_filters( 'excerpt_more', ' ' . '[…]' ); |
|
$text = wp_trim_words( $text, $excerpt_length, $excerpt_more ); |
|
} |
|
/** |
|
* Filter the trimmed excerpt string. |
|
* |
|
* @since 2.8.0 |
|
* |
|
* @param string $text The trimmed text. |
|
* @param string $raw_excerpt The text prior to trimming. |
|
*/ |
|
return apply_filters( 'wp_trim_excerpt', $text, $raw_excerpt ); |
|
} |
|
|
|
/** |
|
* 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. |
|
* |
|
* @since 3.3.0 |
|
* |
|
* @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( $text, $num_words = 55, $more = null ) { |
|
if ( null === $more ) |
|
$more = __( '…' ); |
|
$original_text = $text; |
|
$text = wp_strip_all_tags( $text ); |
|
/* translators: If your word count is based on single characters (East Asian characters), |
|
enter 'characters'. Otherwise, enter 'words'. Do not translate into your own language. */ |
|
if ( 'characters' == _x( 'words', 'word count: words or characters?' ) && preg_match( '/^utf\-?8$/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, PREG_SPLIT_NO_EMPTY ); |
|
$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 ); |
|
} |
|
/** |
|
* 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 ); |
|
} |
|
|
|
/** |
|
* Converts named entities into numbered entities. |
|
* |
|
* @since 1.5.1 |
|
* |
|
* @param string $text The text within which entities will be converted. |
|
* @return string Text with converted entities. |
|
*/ |
|
function ent2ncr($text) { |
|
|
|
/** |
|
* Filter text before named entities are converted into numbered entities. |
|
* |
|
* A non-null string must be returned for the filter to be evaluated. |
|
* |
|
* @since 3.3.0 |
|
* |
|
* @param null $converted_text The text to be converted. Default null. |
|
* @param string $text The text prior to entity conversion. |
|
*/ |
|
$filtered = apply_filters( 'pre_ent2ncr', null, $text ); |
|
if( null !== $filtered ) |
|
return $filtered; |
|
|
|
$to_ncr = array( |
|
'"' => '"', |
|
'&' => '&', |
|
'<' => '<', |
|
'>' => '>', |
|
'|' => '|', |
|
' ' => ' ', |
|
'¡' => '¡', |
|
'¢' => '¢', |
|
'£' => '£', |
|
'¤' => '¤', |
|
'¥' => '¥', |
|
'¦' => '¦', |
|
'&brkbar;' => '¦', |
|
'§' => '§', |
|
'¨' => '¨', |
|
'¨' => '¨', |
|
'©' => '©', |
|
'ª' => 'ª', |
|
'«' => '«', |
|
'¬' => '¬', |
|
'­' => '­', |
|
'®' => '®', |
|
'¯' => '¯', |
|
'&hibar;' => '¯', |
|
'°' => '°', |
|
'±' => '±', |
|
'²' => '²', |
|
'³' => '³', |
|
'´' => '´', |
|
'µ' => 'µ', |
|
'¶' => '¶', |
|
'·' => '·', |
|
'¸' => '¸', |
|
'¹' => '¹', |
|
'º' => 'º', |
|
'»' => '»', |
|
'¼' => '¼', |
|
'½' => '½', |
|
'¾' => '¾', |
|
'¿' => '¿', |
|
'À' => 'À', |
|
'Á' => 'Á', |
|
'Â' => 'Â', |
|
'Ã' => 'Ã', |
|
'Ä' => 'Ä', |
|
'Å' => 'Å', |
|
'Æ' => 'Æ', |
|
'Ç' => 'Ç', |
|
'È' => 'È', |
|
'É' => 'É', |
|
'Ê' => 'Ê', |
|
'Ë' => 'Ë', |
|
'Ì' => 'Ì', |
|
'Í' => 'Í', |
|
'Î' => 'Î', |
|
'Ï' => 'Ï', |
|
'Ð' => 'Ð', |
|
'Ñ' => 'Ñ', |
|
'Ò' => 'Ò', |
|
'Ó' => 'Ó', |
|
'Ô' => 'Ô', |
|
'Õ' => 'Õ', |
|
'Ö' => 'Ö', |
|
'×' => '×', |
|
'Ø' => 'Ø', |
|
'Ù' => 'Ù', |
|
'Ú' => 'Ú', |
|
'Û' => 'Û', |
|
'Ü' => 'Ü', |
|
'Ý' => 'Ý', |
|
'Þ' => 'Þ', |
|
'ß' => 'ß', |
|
'à' => 'à', |
|
'á' => 'á', |
|
'â' => 'â', |
|
'ã' => 'ã', |
|
'ä' => 'ä', |
|
'å' => 'å', |
|
'æ' => 'æ', |
|
'ç' => 'ç', |
|
'è' => 'è', |
|
'é' => 'é', |
|
'ê' => 'ê', |
|
'ë' => 'ë', |
|
'ì' => 'ì', |
|
'í' => 'í', |
|
'î' => 'î', |
|
'ï' => 'ï', |
|
'ð' => 'ð', |
|
'ñ' => 'ñ', |
|
'ò' => 'ò', |
|
'ó' => 'ó', |
|
'ô' => 'ô', |
|
'õ' => 'õ', |
|
'ö' => 'ö', |
|
'÷' => '÷', |
|
'ø' => 'ø', |
|
'ù' => 'ù', |
|
'ú' => 'ú', |
|
'û' => 'û', |
|
'ü' => 'ü', |
|
'ý' => 'ý', |
|
'þ' => 'þ', |
|
'ÿ' => 'ÿ', |
|
'Œ' => 'Œ', |
|
'œ' => 'œ', |
|
'Š' => 'Š', |
|
'š' => 'š', |
|
'Ÿ' => 'Ÿ', |
|
'ƒ' => 'ƒ', |
|
'ˆ' => 'ˆ', |
|
'˜' => '˜', |
|
'Α' => 'Α', |
|
'Β' => 'Β', |
|
'Γ' => 'Γ', |
|
'Δ' => 'Δ', |
|
'Ε' => 'Ε', |
|
'Ζ' => 'Ζ', |
|
'Η' => 'Η', |
|
'Θ' => 'Θ', |
|
'Ι' => 'Ι', |
|
'Κ' => 'Κ', |
|
'Λ' => 'Λ', |
|
'Μ' => 'Μ', |
|
'Ν' => 'Ν', |
|
'Ξ' => 'Ξ', |
|
'Ο' => 'Ο', |
|
'Π' => 'Π', |
|
'Ρ' => 'Ρ', |
|
'Σ' => 'Σ', |
|
'Τ' => 'Τ', |
|
'Υ' => 'Υ', |
|
'Φ' => 'Φ', |
|
'Χ' => 'Χ', |
|
'Ψ' => 'Ψ', |
|
'Ω' => 'Ω', |
|
'α' => 'α', |
|
'β' => 'β', |
|
'γ' => 'γ', |
|
'δ' => 'δ', |
|
'ε' => 'ε', |
|
'ζ' => 'ζ', |
|
'η' => 'η', |
|
'θ' => 'θ', |
|
'ι' => 'ι', |
|
'κ' => 'κ', |
|
'λ' => 'λ', |
|
'μ' => 'μ', |
|
'ν' => 'ν', |
|
'ξ' => 'ξ', |
|
'ο' => 'ο', |
|
'π' => 'π', |
|
'ρ' => 'ρ', |
|
'ς' => 'ς', |
|
'σ' => 'σ', |
|
'τ' => 'τ', |
|
'υ' => 'υ', |
|
'φ' => 'φ', |
|
'χ' => 'χ', |
|
'ψ' => 'ψ', |
|
'ω' => 'ω', |
|
'ϑ' => 'ϑ', |
|
'ϒ' => 'ϒ', |
|
'ϖ' => 'ϖ', |
|
' ' => ' ', |
|
' ' => ' ', |
|
' ' => ' ', |
|
'‌' => '‌', |
|
'‍' => '‍', |
|
'‎' => '‎', |
|
'‏' => '‏', |
|
'–' => '–', |
|
'—' => '—', |
|
'‘' => '‘', |
|
'’' => '’', |
|
'‚' => '‚', |
|
'“' => '“', |
|
'”' => '”', |
|
'„' => '„', |
|
'†' => '†', |
|
'‡' => '‡', |
|
'•' => '•', |
|
'…' => '…', |
|
'‰' => '‰', |
|
'′' => '′', |
|
'″' => '″', |
|
'‹' => '‹', |
|
'›' => '›', |
|
'‾' => '‾', |
|
'⁄' => '⁄', |
|
'€' => '€', |
|
'ℑ' => 'ℑ', |
|
'℘' => '℘', |
|
'ℜ' => 'ℜ', |
|
'™' => '™', |
|
'ℵ' => 'ℵ', |
|
'↵' => '↵', |
|
'⇐' => '⇐', |
|
'⇑' => '⇑', |
|
'⇒' => '⇒', |
|
'⇓' => '⇓', |
|
'⇔' => '⇔', |
|
'∀' => '∀', |
|
'∂' => '∂', |
|
'∃' => '∃', |
|
'∅' => '∅', |
|
'∇' => '∇', |
|
'∈' => '∈', |
|
'∉' => '∉', |
|
'∋' => '∋', |
|
'∏' => '∏', |
|
'∑' => '∑', |
|
'−' => '−', |
|
'∗' => '∗', |
|
'√' => '√', |
|
'∝' => '∝', |
|
'∞' => '∞', |
|
'∠' => '∠', |
|
'∧' => '∧', |
|
'∨' => '∨', |
|
'∩' => '∩', |
|
'∪' => '∪', |
|
'∫' => '∫', |
|
'∴' => '∴', |
|
'∼' => '∼', |
|
'≅' => '≅', |
|
'≈' => '≈', |
|
'≠' => '≠', |
|
'≡' => '≡', |
|
'≤' => '≤', |
|
'≥' => '≥', |
|
'⊂' => '⊂', |
|
'⊃' => '⊃', |
|
'⊄' => '⊄', |
|
'⊆' => '⊆', |
|
'⊇' => '⊇', |
|
'⊕' => '⊕', |
|
'⊗' => '⊗', |
|
'⊥' => '⊥', |
|
'⋅' => '⋅', |
|
'⌈' => '⌈', |
|
'⌉' => '⌉', |
|
'⌊' => '⌊', |
|
'⌋' => '⌋', |
|
'⟨' => '〈', |
|
'⟩' => '〉', |
|
'←' => '←', |
|
'↑' => '↑', |
|
'→' => '→', |
|
'↓' => '↓', |
|
'↔' => '↔', |
|
'◊' => '◊', |
|
'♠' => '♠', |
|
'♣' => '♣', |
|
'♥' => '♥', |
|
'♦' => '♦' |
|
); |
|
|
|
return str_replace( array_keys($to_ncr), array_values($to_ncr), $text ); |
|
} |
|
|
|
/** |
|
* Formats text for the rich text editor. |
|
* |
|
* The filter 'richedit_pre' is applied here. If $text is empty the filter will |
|
* be applied to an empty string. |
|
* |
|
* @since 2.0.0 |
|
* |
|
* @param string $text The text to be formatted. |
|
* @return string The formatted text after filter is applied. |
|
*/ |
|
function wp_richedit_pre($text) { |
|
if ( empty( $text ) ) { |
|
/** |
|
* Filter text returned for the rich text editor. |
|
* |
|
* This filter is first evaluated, and the value returned, if an empty string |
|
* is passed to wp_richedit_pre(). If an empty string is passed, it results |
|
* in a break tag and line feed. |
|
* |
|
* If a non-empty string is passed, the filter is evaluated on the wp_richedit_pre() |
|
* return after being formatted. |
|
* |
|
* @since 2.0.0 |
|
* |
|
* @param string $output Text for the rich text editor. |
|
*/ |
|
return apply_filters( 'richedit_pre', '' ); |
|
} |
|
|
|
$output = convert_chars($text); |
|
$output = wpautop($output); |
|
$output = htmlspecialchars($output, ENT_NOQUOTES, get_option( 'blog_charset' ) ); |
|
|
|
/** This filter is documented in wp-includes/formatting.php */ |
|
return apply_filters( 'richedit_pre', $output ); |
|
} |
|
|
|
/** |
|
* Formats text for the HTML editor. |
|
* |
|
* Unless $output is empty it will pass through htmlspecialchars before the |
|
* 'htmledit_pre' filter is applied. |
|
* |
|
* @since 2.5.0 |
|
* |
|
* @param string $output The text to be formatted. |
|
* @return string Formatted text after filter applied. |
|
*/ |
|
function wp_htmledit_pre($output) { |
|
if ( !empty($output) ) |
|
$output = htmlspecialchars($output, ENT_NOQUOTES, get_option( 'blog_charset' ) ); // convert only < > & |
|
|
|
/** |
|
* Filter the text before it is formatted for the HTML editor. |
|
* |
|
* @since 2.5.0 |
|
* |
|
* @param string $output The HTML-formatted text. |
|
*/ |
|
return apply_filters( 'htmledit_pre', $output ); |
|
} |
|
|
|
/** |
|
* Perform a deep string replace operation to ensure the values in $search are no longer present |
|
* |
|
* Repeats the replacement operation until it no longer replaces anything so as to remove "nested" values |
|
* e.g. $subject = '%0%0%0DDD', $search ='%0D', $result ='' rather than the '%0%0DD' that |
|
* str_replace would return |
|
* |
|
* @since 2.8.1 |
|
* @access private |
|
* |
|
* @param string|array $search The value being searched for, otherwise known as the needle. An array may be used to designate multiple needles. |
|
* @param string $subject The string being searched and replaced on, otherwise known as the haystack. |
|
* @return string The string with the replaced svalues. |
|
*/ |
|
function _deep_replace( $search, $subject ) { |
|
$subject = (string) $subject; |
|
|
|
$count = 1; |
|
while ( $count ) { |
|
$subject = str_replace( $search, '', $subject, $count ); |
|
} |
|
|
|
return $subject; |
|
} |
|
|
|
/** |
|
* Escapes data for use in a MySQL query. |
|
* |
|
* Usually you should prepare queries using wpdb::prepare(). |
|
* Sometimes, spot-escaping is required or useful. One example |
|
* is preparing an array for use in an IN clause. |
|
* |
|
* @since 2.8.0 |
|
* @param string|array $data Unescaped data |
|
* @return string|array Escaped data |
|
*/ |
|
function esc_sql( $data ) { |
|
global $wpdb; |
|
return $wpdb->_escape( $data ); |
|
} |
|
|
|
/** |
|
* Checks and cleans a URL. |
|
* |
|
* A number of characters are removed from the URL. If the URL is for displaying |
|
* (the default behaviour) ampersands are also replaced. The 'clean_url' filter |
|
* is applied to the returned cleaned URL. |
|
* |
|
* @since 2.8.0 |
|
* |
|
* @param string $url The URL to be cleaned. |
|
* @param array $protocols Optional. An array of acceptable protocols. |
|
* Defaults to 'http', 'https', 'ftp', 'ftps', 'mailto', 'news', 'irc', 'gopher', 'nntp', 'feed', 'telnet', 'mms', 'rtsp', 'svn' if not set. |
|
* @param string $_context Private. Use esc_url_raw() for database usage. |
|
* @return string The cleaned $url after the 'clean_url' filter is applied. |
|
*/ |
|
function esc_url( $url, $protocols = null, $_context = 'display' ) { |
|
$original_url = $url; |
|
|
|
if ( '' == $url ) |
|
return $url; |
|
$url = preg_replace('|[^a-z0-9-~+_.?#=!&;,/:%@$\|*\'()\\x80-\\xff]|i', '', $url); |
|
$strip = array('%0d', '%0a', '%0D', '%0A'); |
|
$url = _deep_replace($strip, $url); |
|
$url = str_replace(';//', '://', $url); |
|
/* If the URL doesn't appear to contain a scheme, we |
|
* presume it needs http:// appended (unless a relative |
|
* link starting with /, # or ? or a php file). |
|
*/ |
|
if ( strpos($url, ':') === false && ! in_array( $url[0], array( '/', '#', '?' ) ) && |
|
! preg_match('/^[a-z0-9-]+?\.php/i', $url) ) |
|
$url = 'http://' . $url; |
|
|
|
// Replace ampersands and single quotes only when displaying. |
|
if ( 'display' == $_context ) { |
|
$url = wp_kses_normalize_entities( $url ); |
|
$url = str_replace( '&', '&', $url ); |
|
$url = str_replace( "'", ''', $url ); |
|
} |
|
|
|
if ( '/' === $url[0] ) { |
|
$good_protocol_url = $url; |
|
} else { |
|
if ( ! is_array( $protocols ) ) |
|
$protocols = wp_allowed_protocols(); |
|
$good_protocol_url = wp_kses_bad_protocol( $url, $protocols ); |
|
if ( strtolower( $good_protocol_url ) != strtolower( $url ) ) |
|
return ''; |
|
} |
|
|
|
/** |
|
* Filter a string cleaned and escaped for output as a URL. |
|
* |
|
* @since 2.3.0 |
|
* |
|
* @param string $good_protocol_url The cleaned URL to be returned. |
|
* @param string $original_url The URL prior to cleaning. |
|
* @param string $_context If 'display', replace ampersands and single quotes only. |
|
*/ |
|
return apply_filters( 'clean_url', $good_protocol_url, $original_url, $_context ); |
|
} |
|
|
|
/** |
|
* Performs esc_url() for database usage. |
|
* |
|
* @since 2.8.0 |
|
* |
|
* @param string $url The URL to be cleaned. |
|
* @param array $protocols An array of acceptable protocols. |
|
* @return string The cleaned URL. |
|
*/ |
|
function esc_url_raw( $url, $protocols = null ) { |
|
return esc_url( $url, $protocols, 'db' ); |
|
} |
|
|
|
/** |
|
* Convert entities, while preserving already-encoded entities. |
|
* |
|
* @link http://www.php.net/htmlentities Borrowed from the PHP Manual user notes. |
|
* |
|
* @since 1.2.2 |
|
* |
|
* @param string $myHTML The text to be converted. |
|
* @return string Converted text. |
|
*/ |
|
function htmlentities2($myHTML) { |
|
$translation_table = get_html_translation_table( HTML_ENTITIES, ENT_QUOTES ); |
|
$translation_table[chr(38)] = '&'; |
|
return preg_replace( "/&(?![A-Za-z]{0,4}\w{2,3};|#[0-9]{2,3};)/", "&", strtr($myHTML, $translation_table) ); |
|
} |
|
|
|
/** |
|
* Escape single quotes, htmlspecialchar " < > &, and fix line endings. |
|
* |
|
* Escapes text strings for echoing in JS. It is intended to be used for inline JS |
|
* (in a tag attribute, for example onclick="..."). Note that the strings have to |
|
* be in single quotes. The filter 'js_escape' is also applied here. |
|
* |
|
* @since 2.8.0 |
|
* |
|
* @param string $text The text to be escaped. |
|
* @return string Escaped text. |
|
*/ |
|
function esc_js( $text ) { |
|
$safe_text = wp_check_invalid_utf8( $text ); |
|
$safe_text = _wp_specialchars( $safe_text, ENT_COMPAT ); |
|
$safe_text = preg_replace( '/&#(x)?0*(?(1)27|39);?/i', "'", stripslashes( $safe_text ) ); |
|
$safe_text = str_replace( "\r", '', $safe_text ); |
|
$safe_text = str_replace( "\n", '\\n', addslashes( $safe_text ) ); |
|
/** |
|
* Filter a string cleaned and escaped for output in JavaScript. |
|
* |
|
* Text passed to esc_js() is stripped of invalid or special characters, |
|
* and properly slashed for output. |
|
* |
|
* @since 2.0.6 |
|
* |
|
* @param string $safe_text The text after it has been escaped. |
|
* @param string $text The text prior to being escaped. |
|
*/ |
|
return apply_filters( 'js_escape', $safe_text, $text ); |
|
} |
|
|
|
/** |
|
* Escaping for HTML blocks. |
|
* |
|
* @since 2.8.0 |
|
* |
|
* @param string $text |
|
* @return string |
|
*/ |
|
function esc_html( $text ) { |
|
$safe_text = wp_check_invalid_utf8( $text ); |
|
$safe_text = _wp_specialchars( $safe_text, ENT_QUOTES ); |
|
/** |
|
* Filter a string cleaned and escaped for output in HTML. |
|
* |
|
* Text passed to esc_html() is stripped of invalid or special characters |
|
* before output. |
|
* |
|
* @since 2.8.0 |
|
* |
|
* @param string $safe_text The text after it has been escaped. |
|
* @param string $text The text prior to being escaped. |
|
*/ |
|
return apply_filters( 'esc_html', $safe_text, $text ); |
|
} |
|
|
|
/** |
|
* Escaping for HTML attributes. |
|
* |
|
* @since 2.8.0 |
|
* |
|
* @param string $text |
|
* @return string |
|
*/ |
|
function esc_attr( $text ) { |
|
$safe_text = wp_check_invalid_utf8( $text ); |
|
$safe_text = _wp_specialchars( $safe_text, ENT_QUOTES ); |
|
/** |
|
* Filter a string cleaned and escaped for output in an HTML attribute. |
|
* |
|
* Text passed to esc_attr() is stripped of invalid or special characters |
|
* before output. |
|
* |
|
* @since 2.0.6 |
|
* |
|
* @param string $safe_text The text after it has been escaped. |
|
* @param string $text The text prior to being escaped. |
|
*/ |
|
return apply_filters( 'attribute_escape', $safe_text, $text ); |
|
} |
|
|
|
/** |
|
* Escaping for textarea values. |
|
* |
|
* @since 3.1.0 |
|
* |
|
* @param string $text |
|
* @return string |
|
*/ |
|
function esc_textarea( $text ) { |
|
$safe_text = htmlspecialchars( $text, ENT_QUOTES, get_option( 'blog_charset' ) ); |
|
/** |
|
* Filter a string cleaned and escaped for output in a textarea element. |
|
* |
|
* @since 3.1.0 |
|
* |
|
* @param string $safe_text The text after it has been escaped. |
|
* @param string $text The text prior to being escaped. |
|
*/ |
|
return apply_filters( 'esc_textarea', $safe_text, $text ); |
|
} |
|
|
|
/** |
|
* Escape an HTML tag name. |
|
* |
|
* @since 2.5.0 |
|
* |
|
* @param string $tag_name |
|
* @return string |
|
*/ |
|
function tag_escape($tag_name) { |
|
$safe_tag = strtolower( preg_replace('/[^a-zA-Z0-9_:]/', '', $tag_name) ); |
|
/** |
|
* Filter a string cleaned and escaped for output as an HTML tag. |
|
* |
|
* @since 2.8.0 |
|
* |
|
* @param string $safe_tag The tag name after it has been escaped. |
|
* @param string $tag_name The text before it was escaped. |
|
*/ |
|
return apply_filters( 'tag_escape', $safe_tag, $tag_name ); |
|
} |
|
|
|
/** |
|
* Convert full URL paths to absolute paths. |
|
* |
|
* Removes the http or https protocols and the domain. Keeps the path '/' at the |
|
* 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', '$2', $link ); |
|
} |
|
|
|
/** |
|
* Sanitises various option values based on the nature of the option. |
|
* |
|
* This is basically a switch statement which will pass $value through a number |
|
* of functions depending on the $option. |
|
* |
|
* @since 2.0.5 |
|
* |
|
* @param string $option The name of the option. |
|
* @param string $value The unsanitised value. |
|
* @return string Sanitized value. |
|
*/ |
|
function sanitize_option($option, $value) { |
|
global $wpdb; |
|
|
|
switch ( $option ) { |
|
case 'admin_email' : |
|
case 'new_admin_email' : |
|
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value ); |
|
$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.' ) ); |
|
} |
|
break; |
|
|
|
case 'thumbnail_size_w': |
|
case 'thumbnail_size_h': |
|
case 'medium_size_w': |
|
case 'medium_size_h': |
|
case 'large_size_w': |
|
case 'large_size_h': |
|
case 'mailserver_port': |
|
case 'comment_max_links': |
|
case 'page_on_front': |
|
case 'page_for_posts': |
|
case 'rss_excerpt_length': |
|
case 'default_category': |
|
case 'default_email_category': |
|
case 'default_link_category': |
|
case 'close_comments_days_old': |
|
case 'comments_per_page': |
|
case 'thread_comments_depth': |
|
case 'users_can_register': |
|
case 'start_of_week': |
|
$value = absint( $value ); |
|
break; |
|
|
|
case 'posts_per_page': |
|
case 'posts_per_rss': |
|
$value = (int) $value; |
|
if ( empty($value) ) |
|
$value = 1; |
|
if ( $value < -1 ) |
|
$value = abs($value); |
|
break; |
|
|
|
case 'default_ping_status': |
|
case 'default_comment_status': |
|
// Options that if not there have 0 value but need to be something like "closed" |
|
if ( $value == '0' || $value == '') |
|
$value = 'closed'; |
|
break; |
|
|
|
case 'blogdescription': |
|
case 'blogname': |
|
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value ); |
|
$value = wp_kses_post( $value ); |
|
$value = esc_html( $value ); |
|
break; |
|
|
|
case 'blog_charset': |
|
$value = preg_replace('/[^a-zA-Z0-9_-]/', '', $value); // strips slashes |
|
break; |
|
|
|
case 'blog_public': |
|
// This is the value if the settings checkbox is not checked on POST. Don't rely on this. |
|
if ( null === $value ) |
|
$value = 1; |
|
else |
|
$value = intval( $value ); |
|
break; |
|
|
|
case 'date_format': |
|
case 'time_format': |
|
case 'mailserver_url': |
|
case 'mailserver_login': |
|
case 'mailserver_pass': |
|
case 'upload_path': |
|
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value ); |
|
$value = strip_tags( $value ); |
|
$value = wp_kses_data( $value ); |
|
break; |
|
|
|
case 'ping_sites': |
|
$value = explode( "\n", $value ); |
|
$value = array_filter( array_map( 'trim', $value ) ); |
|
$value = array_filter( array_map( 'esc_url_raw', $value ) ); |
|
$value = implode( "\n", $value ); |
|
break; |
|
|
|
case 'gmt_offset': |
|
$value = preg_replace('/[^0-9:.-]/', '', $value); // strips slashes |
|
break; |
|
|
|
case 'siteurl': |
|
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value ); |
|
if ( (bool)preg_match( '#http(s?)://(.+)#i', $value) ) { |
|
$value = esc_url_raw($value); |
|
} 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.')); |
|
} |
|
break; |
|
|
|
case 'home': |
|
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value ); |
|
if ( (bool)preg_match( '#http(s?)://(.+)#i', $value) ) { |
|
$value = esc_url_raw($value); |
|
} 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.')); |
|
} |
|
break; |
|
|
|
case 'WPLANG': |
|
$allowed = get_available_languages(); |
|
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': |
|
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value ); |
|
if ( ! is_array( $value ) ) |
|
$value = explode( ' ', $value ); |
|
|
|
$value = array_values( array_filter( array_map( 'trim', $value ) ) ); |
|
|
|
if ( ! $value ) |
|
$value = ''; |
|
break; |
|
|
|
case 'limited_email_domains': |
|
case 'banned_email_domains': |
|
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value ); |
|
if ( ! is_array( $value ) ) |
|
$value = explode( "\n", $value ); |
|
|
|
$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; |
|
} |
|
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.') ); |
|
} |
|
break; |
|
|
|
case 'permalink_structure': |
|
case 'category_base': |
|
case 'tag_base': |
|
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value ); |
|
$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 ); |
|
$value = explode( "\n", $value ); |
|
$value = array_filter( array_map( 'trim', $value ) ); |
|
$value = array_unique( $value ); |
|
$value = implode( "\n", $value ); |
|
break; |
|
} |
|
|
|
/** |
|
* Filter an option value following sanitization. |
|
* |
|
* @since 2.3.0 |
|
* |
|
* @param string $value The sanitized option value. |
|
* @param string $option The option name. |
|
*/ |
|
$value = apply_filters( "sanitize_option_{$option}", $value, $option ); |
|
|
|
return $value; |
|
} |
|
|
|
/** |
|
* Parses a string into variables to be stored in an array. |
|
* |
|
* Uses {@link http://www.php.net/parse_str parse_str()} and stripslashes if |
|
* {@link http://www.php.net/magic_quotes magic_quotes_gpc} is on. |
|
* |
|
* @since 2.2.1 |
|
* |
|
* @param string $string The string to be parsed. |
|
* @param array $array Variables will be stored in this array. |
|
*/ |
|
function wp_parse_str( $string, &$array ) { |
|
parse_str( $string, $array ); |
|
if ( get_magic_quotes_gpc() ) |
|
$array = stripslashes_deep( $array ); |
|
/** |
|
* Filter the array of variables derived from a parsed string. |
|
* |
|
* @since 2.3.0 |
|
* |
|
* @param array $array The array populated with variables. |
|
*/ |
|
$array = apply_filters( 'wp_parse_str', $array ); |
|
} |
|
|
|
/** |
|
* Convert lone less than signs. |
|
* |
|
* KSES already converts lone greater than signs. |
|
* |
|
* @since 2.3.0 |
|
* |
|
* @param string $text Text to be converted. |
|
* @return string Converted text. |
|
*/ |
|
function wp_pre_kses_less_than( $text ) { |
|
return preg_replace_callback('%<[^>]*?((?=<)|>|$)%', 'wp_pre_kses_less_than_callback', $text); |
|
} |
|
|
|
/** |
|
* Callback function used by preg_replace. |
|
* |
|
* @since 2.3.0 |
|
* |
|
* @param array $matches Populated by matches to preg_replace. |
|
* @return string The text returned after esc_html if needed. |
|
*/ |
|
function wp_pre_kses_less_than_callback( $matches ) { |
|
if ( false === strpos($matches[0], '>') ) |
|
return esc_html($matches[0]); |
|
return $matches[0]; |
|
} |
|
|
|
/** |
|
* WordPress implementation of PHP sprintf() with filters. |
|
* |
|
* @since 2.5.0 |
|
* @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. |
|
* @return string The formatted string. |
|
*/ |
|
function wp_sprintf( $pattern ) { |
|
$args = func_get_args(); |
|
$len = strlen($pattern); |
|
$start = 0; |
|
$result = ''; |
|
$arg_index = 0; |
|
while ( $len > $start ) { |
|
// Last character: append and break |
|
if ( strlen($pattern) - 1 == $start ) { |
|
$result .= substr($pattern, -1); |
|
break; |
|
} |
|
|
|
// Literal %: append and continue |
|
if ( substr($pattern, $start, 2) == '%%' ) { |
|
$start += 2; |
|
$result .= '%'; |
|
continue; |
|
} |
|
|
|
// Get fragment before next % |
|
$end = strpos($pattern, '%', $start + 1); |
|
if ( false === $end ) |
|
$end = $len; |
|
$fragment = substr($pattern, $start, $end - $start); |
|
|
|
// Fragment has a specifier |
|
if ( $pattern[$start] == '%' ) { |
|
// Find numbered arguments or take the next one in order |
|
if ( preg_match('/^%(\d+)\$/', $fragment, $matches) ) { |
|
$arg = isset($args[$matches[1]]) ? $args[$matches[1]] : ''; |
|
$fragment = str_replace("%{$matches[1]}$", '%', $fragment); |
|
} else { |
|
++$arg_index; |
|
$arg = isset($args[$arg_index]) ? $args[$arg_index] : ''; |
|
} |
|
|
|
/** |
|
* Filter a fragment from the pattern passed to wp_sprintf(). |
|
* |
|
* If the fragment is unchanged, then sprintf() will be run on the fragment. |
|
* |
|
* @since 2.5.0 |
|
* |
|
* @param string $fragment A fragment from the pattern. |
|
* @param string $arg The argument. |
|
*/ |
|
$_fragment = apply_filters( 'wp_sprintf', $fragment, $arg ); |
|
if ( $_fragment != $fragment ) |
|
$fragment = $_fragment; |
|
else |
|
$fragment = sprintf($fragment, strval($arg) ); |
|
} |
|
|
|
// Append to result and move to next fragment |
|
$result .= $fragment; |
|
$start = $end; |
|
} |
|
return $result; |
|
} |
|
|
|
/** |
|
* Localize list items before the rest of the content. |
|
* |
|
* The '%l' must be at the first characters can then contain the rest of the |
|
* content. The list items will have ', ', ', and', and ' and ' added depending |
|
* on the amount of list items in the $args parameter. |
|
* |
|
* @since 2.5.0 |
|
* |
|
* @param string $pattern Content containing '%l' at the beginning. |
|
* @param array $args List items to prepend to the content and replace '%l'. |
|
* @return string Localized list items and rest of the content. |
|
*/ |
|
function wp_sprintf_l($pattern, $args) { |
|
// Not a match |
|
if ( substr($pattern, 0, 2) != '%l' ) |
|
return $pattern; |
|
|
|
// Nothing to work with |
|
if ( empty($args) ) |
|
return ''; |
|
|
|
/** |
|
* 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. |
|
* |
|
* @since 2.5.0 |
|
* |
|
* @param array $delimiters An array of translated delimiters. |
|
*/ |
|
$l = apply_filters( 'wp_sprintf_l', array( |
|
/* 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; |
|
$result = array_shift($args); |
|
if ( count($args) == 1 ) |
|
$result .= $l['between_only_two'] . array_shift($args); |
|
// Loop when more than two args |
|
$i = count($args); |
|
while ( $i ) { |
|
$arg = array_shift($args); |
|
$i--; |
|
if ( 0 == $i ) |
|
$result .= $l['between_last_two'] . $arg; |
|
else |
|
$result .= $l['between'] . $arg; |
|
} |
|
return $result . substr($pattern, 2); |
|
} |
|
|
|
/** |
|
* Safely extracts not more than the first $count characters from html string. |
|
* |
|
* UTF-8, tags and entities safe prefix extraction. Entities inside will *NOT* |
|
* be counted as one character. For example & will be counted as 4, < as |
|
* 3, etc. |
|
* |
|
* @since 2.5.0 |
|
* |
|
* @param string $str String to get the excerpt from. |
|
* @param integer $count Maximum number of characters to take. |
|
* @param string $more Optional. What to append if $str needs to be trimmed. Defaults to empty string. |
|
* @return string The excerpt. |
|
*/ |
|
function wp_html_excerpt( $str, $count, $more = null ) { |
|
if ( null === $more ) |
|
$more = ''; |
|
$str = wp_strip_all_tags( $str, true ); |
|
$excerpt = mb_substr( $str, 0, $count ); |
|
// remove part of an entity at the end |
|
$excerpt = preg_replace( '/&[^;\s]{0,6}$/', '', $excerpt ); |
|
if ( $str != $excerpt ) |
|
$excerpt = trim( $excerpt ) . $more; |
|
return $excerpt; |
|
} |
|
|
|
/** |
|
* Add a Base url to relative links in passed content. |
|
* |
|
* By default it supports the 'src' and 'href' attributes. However this can be |
|
* changed via the 3rd param. |
|
* |
|
* @since 2.7.0 |
|
* |
|
* @param string $content String to search for links in. |
|
* @param string $base The base URL to prefix to links. |
|
* @param array $attrs The attributes which should be processed. |
|
* @return string The processed content. |
|
*/ |
|
function links_add_base_url( $content, $base, $attrs = array('src', 'href') ) { |
|
global $_links_add_base; |
|
$_links_add_base = $base; |
|
$attrs = implode('|', (array)$attrs); |
|
return preg_replace_callback( "!($attrs)=(['\"])(.+?)\\2!i", '_links_add_base', $content ); |
|
} |
|
|
|
/** |
|
* Callback to add a base url to relative links in passed content. |
|
* |
|
* @since 2.7.0 |
|
* @access private |
|
* |
|
* @param string $m The matched link. |
|
* @return string The processed link. |
|
*/ |
|
function _links_add_base($m) { |
|
global $_links_add_base; |
|
//1 = attribute name 2 = quotation mark 3 = URL |
|
return $m[1] . '=' . $m[2] . |
|
( preg_match( '#^(\w{1,20}):#', $m[3], $protocol ) && in_array( $protocol[1], wp_allowed_protocols() ) ? |
|
$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 |
|
* modified by the 3rd param. |
|
* |
|
* *NOTE:* Any current target attributed will be stripped and replaced. |
|
* |
|
* @since 2.7.0 |
|
* |
|
* @param string $content String to search for links in. |
|
* @param string $target The Target to add to the links. |
|
* @param array $tags An array of tags to apply to. |
|
* @return string The processed content. |
|
*/ |
|
function links_add_target( $content, $target = '_blank', $tags = array('a') ) { |
|
global $_links_add_target; |
|
$_links_add_target = $target; |
|
$tags = implode('|', (array)$tags); |
|
return preg_replace_callback( "!<($tags)([^>]*)>!i", '_links_add_target', $content ); |
|
} |
|
|
|
/** |
|
* Callback to add a target attribute to all links in passed content. |
|
* |
|
* @since 2.7.0 |
|
* @access private |
|
* |
|
* @param string $m The matched link. |
|
* @return string The processed link. |
|
*/ |
|
function _links_add_target( $m ) { |
|
global $_links_add_target; |
|
$tag = $m[1]; |
|
$link = preg_replace('|( target=([\'"])(.*?)\2)|i', '', $m[2]); |
|
return '<' . $tag . $link . ' target="' . esc_attr( $_links_add_target ) . '">'; |
|
} |
|
|
|
/** |
|
* Normalize EOL characters and strip duplicate whitespace. |
|
* |
|
* @since 2.7.0 |
|
* |
|
* @param string $str The string to normalize. |
|
* @return string The normalized string. |
|
*/ |
|
function normalize_whitespace( $str ) { |
|
$str = trim( $str ); |
|
$str = str_replace( "\r", "\n", $str ); |
|
$str = preg_replace( array( '/\n+/', '/[ \t]+/' ), array( "\n", ' ' ), $str ); |
|
return $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 |
|
* @param bool $remove_breaks optional Whether to remove left over line breaks and white space chars |
|
* @return string The processed string. |
|
*/ |
|
function wp_strip_all_tags($string, $remove_breaks = false) { |
|
$string = preg_replace( '@<(script|style)[^>]*?>.*?</\\1>@si', '', $string ); |
|
$string = strip_tags($string); |
|
|
|
if ( $remove_breaks ) |
|
$string = preg_replace('/[\r\n\t ]+/', ' ', $string); |
|
|
|
return trim( $string ); |
|
} |
|
|
|
/** |
|
* Sanitize a string from user input or from the db |
|
* |
|
* check for invalid UTF-8, |
|
* Convert single < characters to entity, |
|
* strip all tags, |
|
* remove line breaks, tabs and extra white space, |
|
* strip octets. |
|
* |
|
* @since 2.9.0 |
|
* |
|
* @param string $str |
|
* @return string |
|
*/ |
|
function sanitize_text_field($str) { |
|
$filtered = wp_check_invalid_utf8( $str ); |
|
|
|
if ( strpos($filtered, '<') !== false ) { |
|
$filtered = wp_pre_kses_less_than( $filtered ); |
|
// This will strip extra whitespace for us. |
|
$filtered = wp_strip_all_tags( $filtered, true ); |
|
} else { |
|
$filtered = trim( preg_replace('/[\r\n\t ]+/', ' ', $filtered) ); |
|
} |
|
|
|
$found = false; |
|
while ( preg_match('/%[a-f0-9]{2}/i', $filtered, $match) ) { |
|
$filtered = str_replace($match[0], '', $filtered); |
|
$found = true; |
|
} |
|
|
|
if ( $found ) { |
|
// Strip out the whitespace that may now exist after removing the octets. |
|
$filtered = trim( preg_replace('/ +/', ' ', $filtered) ); |
|
} |
|
|
|
/** |
|
* Filter a sanitized text field string. |
|
* |
|
* @since 2.9.0 |
|
* |
|
* @param string $filtered The sanitized string. |
|
* @param string $str The string prior to being sanitized. |
|
*/ |
|
return apply_filters( 'sanitize_text_field', $filtered, $str ); |
|
} |
|
|
|
/** |
|
* i18n friendly version of basename() |
|
* |
|
* @since 3.1.0 |
|
* |
|
* @param string $path A path. |
|
* @param string $suffix If the filename ends in suffix this will also be cut off. |
|
* @return string |
|
*/ |
|
function wp_basename( $path, $suffix = '' ) { |
|
return urldecode( basename( str_replace( array( '%2F', '%5C' ), '/', urlencode( $path ) ), $suffix ) ); |
|
} |
|
|
|
/** |
|
* Forever eliminate "Wordpress" from the planet (or at least the little bit we can influence). |
|
* |
|
* Violating our coding standards for a good function name. |
|
* |
|
* @since 3.0.0 |
|
*/ |
|
function capital_P_dangit( $text ) { |
|
// Simple replacement for titles |
|
$current_filter = current_filter(); |
|
if ( 'the_title' === $current_filter || 'wp_title' === $current_filter ) |
|
return str_replace( 'Wordpress', 'WordPress', $text ); |
|
// Still here? Use the more judicious replacement |
|
static $dblq = false; |
|
if ( false === $dblq ) |
|
$dblq = _x( '“', 'opening curly double quote' ); |
|
return str_replace( |
|
array( ' Wordpress', '‘Wordpress', $dblq . 'Wordpress', '>Wordpress', '(Wordpress' ), |
|
array( ' WordPress', '‘WordPress', $dblq . 'WordPress', '>WordPress', '(WordPress' ), |
|
$text ); |
|
|
|
} |
|
|
|
/** |
|
* Sanitize a mime type |
|
* |
|
* @since 3.1.3 |
|
* |
|
* @param string $mime_type Mime type |
|
* @return string Sanitized mime type |
|
*/ |
|
function sanitize_mime_type( $mime_type ) { |
|
$sani_mime_type = preg_replace( '/[^-+*.a-zA-Z0-9\/]/', '', $mime_type ); |
|
/** |
|
* Filter a mime type following sanitization. |
|
* |
|
* @since 3.1.3 |
|
* |
|
* @param string $sani_mime_type The sanitized mime type. |
|
* @param string $mime_type The mime type prior to sanitization. |
|
*/ |
|
return apply_filters( 'sanitize_mime_type', $sani_mime_type, $mime_type ); |
|
} |
|
|
|
/** |
|
* Sanitize space or carriage return separated URLs that are used to send trackbacks. |
|
* |
|
* @since 3.4.0 |
|
* |
|
* @param string $to_ping Space or carriage return separated URLs |
|
* @return string URLs starting with the http or https protocol, separated by a carriage return. |
|
*/ |
|
function sanitize_trackback_urls( $to_ping ) { |
|
$urls_to_ping = preg_split( '/[\r\n\t ]/', trim( $to_ping ), -1, PREG_SPLIT_NO_EMPTY ); |
|
foreach ( $urls_to_ping as $k => $url ) { |
|
if ( !preg_match( '#^https?://.#i', $url ) ) |
|
unset( $urls_to_ping[$k] ); |
|
} |
|
$urls_to_ping = array_map( 'esc_url_raw', $urls_to_ping ); |
|
$urls_to_ping = implode( "\n", $urls_to_ping ); |
|
/** |
|
* Filter a list of trackback URLs following sanitization. |
|
* |
|
* The string returned here consists of a space or carriage return-delimited list |
|
* of trackback URLs. |
|
* |
|
* @since 3.4.0 |
|
* |
|
* @param string $urls_to_ping Sanitized space or carriage return separated URLs. |
|
* @param string $to_ping Space or carriage return separated URLs before sanitization. |
|
*/ |
|
return apply_filters( 'sanitize_trackback_urls', $urls_to_ping, $to_ping ); |
|
} |
|
|
|
/** |
|
* Add slashes to a string or array of strings. |
|
* |
|
* This should be used when preparing data for core API that expects slashed data. |
|
* This should not be used to escape data going directly into an SQL query. |
|
* |
|
* @since 3.6.0 |
|
* |
|
* @param string|array $value String or array of strings to slash. |
|
* @return string|array Slashed $value |
|
*/ |
|
function wp_slash( $value ) { |
|
if ( is_array( $value ) ) { |
|
foreach ( $value as $k => $v ) { |
|
if ( is_array( $v ) ) { |
|
$value[$k] = wp_slash( $v ); |
|
} else { |
|
$value[$k] = addslashes( $v ); |
|
} |
|
} |
|
} else { |
|
$value = addslashes( $value ); |
|
} |
|
|
|
return $value; |
|
} |
|
|
|
/** |
|
* Remove slashes from a string or array of strings. |
|
* |
|
* This should be used to remove slashes from data passed to core API that |
|
* expects data to be unslashed. |
|
* |
|
* @since 3.6.0 |
|
* |
|
* @param string|array $value String or array of strings to unslash. |
|
* @return string|array Unslashed $value |
|
*/ |
|
function wp_unslash( $value ) { |
|
return stripslashes_deep( $value ); |
|
} |
|
|
|
/** |
|
* Extract and return the first URL from passed content. |
|
* |
|
* @since 3.6.0 |
|
* |
|
* @param string $content A string which might contain a URL. |
|
* @return string The found URL. |
|
*/ |
|
function get_url_in_content( $content ) { |
|
if ( empty( $content ) ) { |
|
return false; |
|
} |
|
|
|
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; |
|
|
|
if ( 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;c.supports={simple:d("simple"),flag:d("flag")},c.supports.simple&&c.supports.flag||(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; |
|
} |