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c1b837b47f
Props sebastianpisula. See #35700. Built from https://develop.svn.wordpress.org/trunk@36488 git-svn-id: http://core.svn.wordpress.org/trunk@36455 1a063a9b-81f0-0310-95a4-ce76da25c4cd
4803 lines
154 KiB
PHP
4803 lines
154 KiB
PHP
<?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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* Do not use this function before the 'init' action hook; everything will break.
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*
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* @since 0.71
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*
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* @global array $wp_cockneyreplace Array of formatted entities for certain common phrases
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* @global array $shortcode_tags
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* @staticvar array $static_characters
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* @staticvar array $static_replacements
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* @staticvar array $dynamic_characters
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* @staticvar array $dynamic_replacements
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* @staticvar array $default_no_texturize_tags
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* @staticvar array $default_no_texturize_shortcodes
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* @staticvar bool $run_texturize
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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 $static_characters = null,
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$static_replacements = null,
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$dynamic_characters = null,
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$dynamic_replacements = null,
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$default_no_texturize_tags = null,
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$default_no_texturize_shortcodes = null,
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$run_texturize = true,
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$apos = null,
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$prime = null,
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$double_prime = null,
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$opening_quote = null,
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$closing_quote = null,
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$opening_single_quote = null,
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$closing_single_quote = null,
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$open_q_flag = '<!--oq-->',
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$open_sq_flag = '<!--osq-->',
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$apos_flag = '<!--apos-->';
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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( $wp_cockneyreplace );
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} else {
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/* translators: This is a comma-separated list of words that defy the syntax of quotations in normal use,
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* for example... 'We do not have enough words yet' ... is a typical quoted phrase. But when we write
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* lines of code 'til we have enough of 'em, then we need to insert apostrophes instead of quotes.
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*/
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$cockney = explode( ',', _x( "'tain't,'twere,'twas,'tis,'twill,'til,'bout,'nuff,'round,'cause,'em",
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'Comma-separated list of words to texturize in your language' ) );
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$cockneyreplace = explode( ',', _x( '’tain’t,’twere,’twas,’tis,’twill,’til,’bout,’nuff,’round,’cause,’em',
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'Comma-separated list of replacement words in your language' ) );
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}
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$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_flag . '$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_flag . '$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_flag;
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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]*)\'/' ] = $open_sq_flag . '$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 . ')\'/' ] = $open_sq_flag;
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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 . ')/' ] = $apos_flag;
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}
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$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]*)"/' ] = $open_q_flag . '$1' . $closing_quote;
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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 . ')/' ] = $open_q_flag;
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}
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$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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preg_match_all( '@\[/?([^<>&/\[\]\x00-\x20=]++)@', $text, $matches );
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$tagnames = array_intersect( array_keys( $shortcode_tags ), $matches[1] );
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$found_shortcodes = ! empty( $tagnames );
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$shortcode_regex = $found_shortcodes ? _get_wptexturize_shortcode_regex( $tagnames ) : '';
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$regex = _get_wptexturize_split_regex( $shortcode_regex );
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$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 ) {
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if ( '<!--' === substr( $curl, 0, 4 ) ) {
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// This is an HTML comment delimiter.
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continue;
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} else {
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// This is an HTML element delimiter.
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// Replace each & with & unless it already looks like an entity.
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$curl = preg_replace( '/&(?!#(?:\d+|x[a-f0-9]+);|[a-z1-4]{1,8};)/i', '&', $curl );
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_wptexturize_pushpop_element( $curl, $no_texturize_tags_stack, $no_texturize_tags );
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}
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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 && $found_shortcodes && 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'], $curl );
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$curl = wptexturize_primes( $curl, "'", $prime, $open_sq_flag, $closing_single_quote );
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$curl = str_replace( $apos_flag, $apos, $curl );
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$curl = str_replace( $open_sq_flag, $opening_single_quote, $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'], $curl );
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$curl = wptexturize_primes( $curl, '"', $double_prime, $open_q_flag, $closing_quote );
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$curl = str_replace( $open_q_flag, $opening_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', $curl );
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}
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// Replace each & with & unless it already looks like an entity.
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$curl = preg_replace( '/&(?!#(?:\d+|x[a-f0-9]+);|[a-z1-4]{1,8};)/i', '&', $curl );
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}
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}
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return implode( '', $textarr );
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}
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/**
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* Implements a logic tree to determine whether or not "7'." represents seven feet,
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* then converts the special char into either a prime char or a closing quote char.
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*
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* @since 4.3.0
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*
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* @param string $haystack The plain text to be searched.
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* @param string $needle The character to search for such as ' or ".
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* @param string $prime The prime char to use for replacement.
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* @param string $open_quote The opening quote char. Opening quote replacement must be
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* accomplished already.
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* @param string $close_quote The closing quote char to use for replacement.
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* @return string The $haystack value after primes and quotes replacements.
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*/
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function wptexturize_primes( $haystack, $needle, $prime, $open_quote, $close_quote ) {
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$spaces = wp_spaces_regexp();
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$flag = '<!--wp-prime-or-quote-->';
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$quote_pattern = "/$needle(?=\\Z|[.,:;!?)}\\-\\]]|>|" . $spaces . ")/";
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$prime_pattern = "/(?<=\\d)$needle/";
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$flag_after_digit = "/(?<=\\d)$flag/";
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$flag_no_digit = "/(?<!\\d)$flag/";
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$sentences = explode( $open_quote, $haystack );
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foreach ( $sentences as $key => &$sentence ) {
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if ( false === strpos( $sentence, $needle ) ) {
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continue;
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} elseif ( 0 !== $key && 0 === substr_count( $sentence, $close_quote ) ) {
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$sentence = preg_replace( $quote_pattern, $flag, $sentence, -1, $count );
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if ( $count > 1 ) {
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// This sentence appears to have multiple closing quotes. Attempt Vulcan logic.
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$sentence = preg_replace( $flag_no_digit, $close_quote, $sentence, -1, $count2 );
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if ( 0 === $count2 ) {
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// Try looking for a quote followed by a period.
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$count2 = substr_count( $sentence, "$flag." );
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if ( $count2 > 0 ) {
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// Assume the rightmost quote-period match is the end of quotation.
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$pos = strrpos( $sentence, "$flag." );
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} else {
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// When all else fails, make the rightmost candidate a closing quote.
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// This is most likely to be problematic in the context of bug #18549.
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$pos = strrpos( $sentence, $flag );
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}
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$sentence = substr_replace( $sentence, $close_quote, $pos, strlen( $flag ) );
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}
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// Use conventional replacement on any remaining primes and quotes.
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$sentence = preg_replace( $prime_pattern, $prime, $sentence );
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$sentence = preg_replace( $flag_after_digit, $prime, $sentence );
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$sentence = str_replace( $flag, $close_quote, $sentence );
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} elseif ( 1 == $count ) {
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// Found only one closing quote candidate, so give it priority over primes.
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$sentence = str_replace( $flag, $close_quote, $sentence );
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$sentence = preg_replace( $prime_pattern, $prime, $sentence );
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} else {
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// No closing quotes found. Just run primes pattern.
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$sentence = preg_replace( $prime_pattern, $prime, $sentence );
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}
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} else {
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$sentence = preg_replace( $prime_pattern, $prime, $sentence );
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$sentence = preg_replace( $quote_pattern, $close_quote, $sentence );
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}
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if ( '"' == $needle && false !== strpos( $sentence, '"' ) ) {
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$sentence = str_replace( '"', $close_quote, $sentence );
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}
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}
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return implode( $open_quote, $sentences );
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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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*
|
|
* A group of regex replaces used to identify text formatted with newlines and
|
|
* replace double line-breaks with HTML paragraph tags. The remaining line-breaks
|
|
* after conversion become <<br />> tags, unless $br is set to '0' or 'false'.
|
|
*
|
|
* @since 0.71
|
|
*
|
|
* @param string $pee The text which has to be formatted.
|
|
* @param bool $br Optional. If set, this will convert all remaining line-breaks
|
|
* after paragraphing. Default true.
|
|
* @return string Text which has been converted into correct paragraph tags.
|
|
*/
|
|
function wpautop( $pee, $br = true ) {
|
|
$pre_tags = array();
|
|
|
|
if ( trim($pee) === '' )
|
|
return '';
|
|
|
|
// Just to make things a little easier, pad the end.
|
|
$pee = $pee . "\n";
|
|
|
|
/*
|
|
* Pre tags shouldn't be touched by autop.
|
|
* Replace pre tags with placeholders and bring them back after autop.
|
|
*/
|
|
if ( strpos($pee, '<pre') !== false ) {
|
|
$pee_parts = explode( '</pre>', $pee );
|
|
$last_pee = array_pop($pee_parts);
|
|
$pee = '';
|
|
$i = 0;
|
|
|
|
foreach ( $pee_parts as $pee_part ) {
|
|
$start = strpos($pee_part, '<pre');
|
|
|
|
// Malformed html?
|
|
if ( $start === false ) {
|
|
$pee .= $pee_part;
|
|
continue;
|
|
}
|
|
|
|
$name = "<pre wp-pre-tag-$i></pre>";
|
|
$pre_tags[$name] = substr( $pee_part, $start ) . '</pre>';
|
|
|
|
$pee .= substr( $pee_part, 0, $start ) . $name;
|
|
$i++;
|
|
}
|
|
|
|
$pee .= $last_pee;
|
|
}
|
|
// Change multiple <br>s into two line breaks, which will turn into paragraphs.
|
|
$pee = preg_replace('|<br\s*/?>\s*<br\s*/?>|', "\n\n", $pee);
|
|
|
|
$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)';
|
|
|
|
// Add a single line break above block-level opening tags.
|
|
$pee = preg_replace('!(<' . $allblocks . '[\s/>])!', "\n$1", $pee);
|
|
|
|
// Add a double line break below block-level closing tags.
|
|
$pee = preg_replace('!(</' . $allblocks . '>)!', "$1\n\n", $pee);
|
|
|
|
// Standardize newline characters to "\n".
|
|
$pee = str_replace(array("\r\n", "\r"), "\n", $pee);
|
|
|
|
// Find newlines in all elements and add placeholders.
|
|
$pee = wp_replace_in_html_tags( $pee, array( "\n" => " <!-- wpnl --> " ) );
|
|
|
|
// Collapse line breaks before and after <option> elements so they don't get autop'd.
|
|
if ( strpos( $pee, '<option' ) !== false ) {
|
|
$pee = preg_replace( '|\s*<option|', '<option', $pee );
|
|
$pee = preg_replace( '|</option>\s*|', '</option>', $pee );
|
|
}
|
|
|
|
/*
|
|
* Collapse line breaks inside <object> elements, before <param> and <embed> elements
|
|
* so they don't get autop'd.
|
|
*/
|
|
if ( strpos( $pee, '</object>' ) !== false ) {
|
|
$pee = preg_replace( '|(<object[^>]*>)\s*|', '$1', $pee );
|
|
$pee = preg_replace( '|\s*</object>|', '</object>', $pee );
|
|
$pee = preg_replace( '%\s*(</?(?:param|embed)[^>]*>)\s*%', '$1', $pee );
|
|
}
|
|
|
|
/*
|
|
* Collapse line breaks inside <audio> and <video> elements,
|
|
* before and after <source> and <track> elements.
|
|
*/
|
|
if ( strpos( $pee, '<source' ) !== false || strpos( $pee, '<track' ) !== false ) {
|
|
$pee = preg_replace( '%([<\[](?:audio|video)[^>\]]*[>\]])\s*%', '$1', $pee );
|
|
$pee = preg_replace( '%\s*([<\[]/(?:audio|video)[>\]])%', '$1', $pee );
|
|
$pee = preg_replace( '%\s*(<(?:source|track)[^>]*>)\s*%', '$1', $pee );
|
|
}
|
|
|
|
// Remove more than two contiguous line breaks.
|
|
$pee = preg_replace("/\n\n+/", "\n\n", $pee);
|
|
|
|
// Split up the contents into an array of strings, separated by double line breaks.
|
|
$pees = preg_split('/\n\s*\n/', $pee, -1, PREG_SPLIT_NO_EMPTY);
|
|
|
|
// Reset $pee prior to rebuilding.
|
|
$pee = '';
|
|
|
|
// Rebuild the content as a string, wrapping every bit with a <p>.
|
|
foreach ( $pees as $tinkle ) {
|
|
$pee .= '<p>' . trim($tinkle, "\n") . "</p>\n";
|
|
}
|
|
|
|
// Under certain strange conditions it could create a P of entirely whitespace.
|
|
$pee = preg_replace('|<p>\s*</p>|', '', $pee);
|
|
|
|
// Add a closing <p> inside <div>, <address>, or <form> tag if missing.
|
|
$pee = preg_replace('!<p>([^<]+)</(div|address|form)>!', "<p>$1</p></$2>", $pee);
|
|
|
|
// If an opening or closing block element tag is wrapped in a <p>, unwrap it.
|
|
$pee = preg_replace('!<p>\s*(</?' . $allblocks . '[^>]*>)\s*</p>!', "$1", $pee);
|
|
|
|
// In some cases <li> may get wrapped in <p>, fix them.
|
|
$pee = preg_replace("|<p>(<li.+?)</p>|", "$1", $pee);
|
|
|
|
// 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);
|
|
|
|
// Normalize <br>
|
|
$pee = str_replace( array( '<br>', '<br/>' ), '<br />', $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);
|
|
|
|
// Restore newlines in all elements.
|
|
if ( false !== strpos( $pee, '<!-- wpnl -->' ) ) {
|
|
$pee = str_replace( array( ' <!-- wpnl --> ', '<!-- wpnl -->' ), "\n", $pee );
|
|
}
|
|
|
|
return $pee;
|
|
}
|
|
|
|
/**
|
|
* Separate HTML elements and comments from the text.
|
|
*
|
|
* @since 4.2.4
|
|
*
|
|
* @param string $input The text which has to be formatted.
|
|
* @return array The formatted text.
|
|
*/
|
|
function wp_html_split( $input ) {
|
|
return preg_split( get_html_split_regex(), $input, -1, PREG_SPLIT_DELIM_CAPTURE );
|
|
}
|
|
|
|
/**
|
|
* Retrieve the regular expression for an HTML element.
|
|
*
|
|
* @since 4.4.0
|
|
*
|
|
* @return string The regular expression
|
|
*/
|
|
function get_html_split_regex() {
|
|
static $regex;
|
|
|
|
if ( ! isset( $regex ) ) {
|
|
$comments =
|
|
'!' // Start of comment, after the <.
|
|
. '(?:' // Unroll the loop: Consume everything until --> is found.
|
|
. '-(?!->)' // Dash not followed by end of comment.
|
|
. '[^\-]*+' // Consume non-dashes.
|
|
. ')*+' // Loop possessively.
|
|
. '(?:-->)?'; // End of comment. If not found, match all input.
|
|
|
|
$cdata =
|
|
'!\[CDATA\[' // Start of comment, after the <.
|
|
. '[^\]]*+' // Consume non-].
|
|
. '(?:' // Unroll the loop: Consume everything until ]]> is found.
|
|
. '](?!]>)' // One ] not followed by end of comment.
|
|
. '[^\]]*+' // Consume non-].
|
|
. ')*+' // Loop possessively.
|
|
. '(?:]]>)?'; // End of comment. If not found, match all input.
|
|
|
|
$escaped =
|
|
'(?=' // Is the element escaped?
|
|
. '!--'
|
|
. '|'
|
|
. '!\[CDATA\['
|
|
. ')'
|
|
. '(?(?=!-)' // If yes, which type?
|
|
. $comments
|
|
. '|'
|
|
. $cdata
|
|
. ')';
|
|
|
|
$regex =
|
|
'/(' // Capture the entire match.
|
|
. '<' // Find start of element.
|
|
. '(?' // Conditional expression follows.
|
|
. $escaped // Find end of escaped element.
|
|
. '|' // ... else ...
|
|
. '[^>]*>?' // Find end of normal element.
|
|
. ')'
|
|
. ')/';
|
|
}
|
|
|
|
return $regex;
|
|
}
|
|
|
|
/**
|
|
* Retrieve the combined regular expression for HTML and shortcodes.
|
|
*
|
|
* @access private
|
|
* @ignore
|
|
* @internal This function will be removed in 4.5.0 per Shortcode API Roadmap.
|
|
* @since 4.4.0
|
|
*
|
|
* @param string $shortcode_regex The result from _get_wptexturize_shortcode_regex(). Optional.
|
|
* @return string The regular expression
|
|
*/
|
|
function _get_wptexturize_split_regex( $shortcode_regex = '' ) {
|
|
static $html_regex;
|
|
|
|
if ( ! isset( $html_regex ) ) {
|
|
$comment_regex =
|
|
'!' // Start of comment, after the <.
|
|
. '(?:' // Unroll the loop: Consume everything until --> is found.
|
|
. '-(?!->)' // Dash not followed by end of comment.
|
|
. '[^\-]*+' // Consume non-dashes.
|
|
. ')*+' // Loop possessively.
|
|
. '(?:-->)?'; // End of comment. If not found, match all input.
|
|
|
|
$html_regex = // Needs replaced with wp_html_split() per Shortcode API Roadmap.
|
|
'<' // Find start of element.
|
|
. '(?(?=!--)' // Is this a comment?
|
|
. $comment_regex // Find end of comment.
|
|
. '|'
|
|
. '[^>]*>?' // Find end of element. If not found, match all input.
|
|
. ')';
|
|
}
|
|
|
|
if ( empty( $shortcode_regex ) ) {
|
|
$regex = '/(' . $html_regex . ')/';
|
|
} else {
|
|
$regex = '/(' . $html_regex . '|' . $shortcode_regex . ')/';
|
|
}
|
|
|
|
return $regex;
|
|
}
|
|
|
|
/**
|
|
* Retrieve the regular expression for shortcodes.
|
|
*
|
|
* @access private
|
|
* @ignore
|
|
* @internal This function will be removed in 4.5.0 per Shortcode API Roadmap.
|
|
* @since 4.4.0
|
|
*
|
|
* @param array $tagnames List of shortcodes to find.
|
|
* @return string The regular expression
|
|
*/
|
|
function _get_wptexturize_shortcode_regex( $tagnames ) {
|
|
$tagregexp = join( '|', array_map( 'preg_quote', $tagnames ) );
|
|
$tagregexp = "(?:$tagregexp)(?=[\\s\\]\\/])"; // Excerpt of get_shortcode_regex().
|
|
$regex =
|
|
'\[' // Find start of shortcode.
|
|
. '[\/\[]?' // Shortcodes may begin with [/ or [[
|
|
. $tagregexp // Only match registered shortcodes, because performance.
|
|
. '(?:'
|
|
. '[^\[\]<>]+' // Shortcodes do not contain other shortcodes. Quantifier critical.
|
|
. '|'
|
|
. '<[^\[\]>]*>' // HTML elements permitted. Prevents matching ] before >.
|
|
. ')*+' // Possessive critical.
|
|
. '\]' // Find end of shortcode.
|
|
. '\]?'; // Shortcodes may end with ]]
|
|
|
|
return $regex;
|
|
}
|
|
|
|
/**
|
|
* Replace characters or phrases within HTML elements only.
|
|
*
|
|
* @since 4.2.3
|
|
*
|
|
* @param string $haystack The text which has to be formatted.
|
|
* @param array $replace_pairs In the form array('from' => 'to', ...).
|
|
* @return string The formatted text.
|
|
*/
|
|
function wp_replace_in_html_tags( $haystack, $replace_pairs ) {
|
|
// Find all elements.
|
|
$textarr = wp_html_split( $haystack );
|
|
$changed = false;
|
|
|
|
// Optimize when searching for one item.
|
|
if ( 1 === count( $replace_pairs ) ) {
|
|
// Extract $needle and $replace.
|
|
foreach ( $replace_pairs as $needle => $replace );
|
|
|
|
// Loop through delimiters (elements) only.
|
|
for ( $i = 1, $c = count( $textarr ); $i < $c; $i += 2 ) {
|
|
if ( false !== strpos( $textarr[$i], $needle ) ) {
|
|
$textarr[$i] = str_replace( $needle, $replace, $textarr[$i] );
|
|
$changed = true;
|
|
}
|
|
}
|
|
} else {
|
|
// Extract all $needles.
|
|
$needles = array_keys( $replace_pairs );
|
|
|
|
// Loop through delimiters (elements) only.
|
|
for ( $i = 1, $c = count( $textarr ); $i < $c; $i += 2 ) {
|
|
foreach ( $needles as $needle ) {
|
|
if ( false !== strpos( $textarr[$i], $needle ) ) {
|
|
$textarr[$i] = strtr( $textarr[$i], $replace_pairs );
|
|
$changed = true;
|
|
// After one strtr() break out of the foreach loop and look at next element.
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( $changed ) {
|
|
$haystack = implode( $textarr );
|
|
}
|
|
|
|
return $haystack;
|
|
}
|
|
|
|
/**
|
|
* Newline preservation help function for wpautop
|
|
*
|
|
* @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
|
|
*
|
|
* @global array $shortcode_tags
|
|
*
|
|
* @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
|
|
. '/';
|
|
|
|
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
|
|
*
|
|
* @staticvar string $_charset
|
|
*
|
|
* @param string $string The text which is to be encoded.
|
|
* @param int|string $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 bool $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 = null;
|
|
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;
|
|
}
|
|
|
|
if ( ! $double_encode ) {
|
|
// Guarantee every &entity; is valid, convert &garbage; into &garbage;
|
|
// This is required for PHP < 5.4.0 because ENT_HTML401 flag is unavailable.
|
|
$string = wp_kses_normalize_entities( $string );
|
|
}
|
|
|
|
$string = @htmlspecialchars( $string, $quote_style, $charset, $double_encode );
|
|
|
|
// 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 string|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 _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
|
|
*
|
|
* @staticvar bool $is_utf8
|
|
* @staticvar bool $utf8_pcre
|
|
*
|
|
* @param string $string The text which is to be checked.
|
|
* @param bool $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 = null;
|
|
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 = null;
|
|
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 || 'de_DE_formal' == $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|false 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 && $fallback ) {
|
|
return sanitize_html_class( $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 lone & characters into `&` (a.k.a. `&`)
|
|
*
|
|
* @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' );
|
|
}
|
|
|
|
if ( strpos( $content, '&' ) !== false ) {
|
|
$content = preg_replace( '/&([^#])(?![a-z1-4]{1,8};)/i', '&$1', $content );
|
|
}
|
|
|
|
return $content;
|
|
}
|
|
|
|
/**
|
|
* Converts invalid Unicode references range to valid range.
|
|
*
|
|
* @since 4.3.0
|
|
*
|
|
* @param string $content String with entities that need converting.
|
|
* @return string Converted string.
|
|
*/
|
|
function convert_invalid_entities( $content ) {
|
|
$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'
|
|
);
|
|
|
|
if ( strpos( $content, '' ) !== false ) {
|
|
$content = strtr( $content, $wp_htmltranswinuni );
|
|
}
|
|
|
|
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 $richedit is set to true,
|
|
* it is simply a holder for the 'format_to_edit' filter.
|
|
*
|
|
* @since 0.71
|
|
* @since 4.4.0 The `$richedit` parameter was renamed to `$rich_text` for clarity.
|
|
*
|
|
* @param string $content The text about to be edited.
|
|
* @param bool $rich_text Optional. Whether `$content` should be considered rich text,
|
|
* in which case it would not be passed through esc_textarea().
|
|
* Default false.
|
|
* @return string The text after the filter (and possibly htmlspecialchars()) has been run.
|
|
*/
|
|
function format_to_edit( $content, $rich_text = 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 ( ! $rich_text )
|
|
$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 int $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, object, or scalar, and removes slashes from the values.
|
|
*
|
|
* @since 2.0.0
|
|
*
|
|
* @param mixed $value The value to be stripped.
|
|
* @return mixed Stripped value.
|
|
*/
|
|
function stripslashes_deep( $value ) {
|
|
return map_deep( $value, 'stripslashes_from_strings_only' );
|
|
}
|
|
|
|
/**
|
|
* Callback function for `stripslashes_deep()` which strips slashes from strings.
|
|
*
|
|
* @since 4.4.0
|
|
*
|
|
* @param mixed $value The array or string to be stripped.
|
|
* @return mixed $value The stripped value.
|
|
*/
|
|
function stripslashes_from_strings_only( $value ) {
|
|
return is_string( $value ) ? stripslashes( $value ) : $value;
|
|
}
|
|
|
|
/**
|
|
* Navigates through an array, object, or scalar, and encodes the values to be used in a URL.
|
|
*
|
|
* @since 2.2.0
|
|
*
|
|
* @param mixed $value The array or string to be encoded.
|
|
* @return mixed $value The encoded value.
|
|
*/
|
|
function urlencode_deep( $value ) {
|
|
return map_deep( $value, 'urlencode' );
|
|
}
|
|
|
|
/**
|
|
* Navigates through an array, object, or scalar, and raw-encodes the values to be used in a URL.
|
|
*
|
|
* @since 3.4.0
|
|
*
|
|
* @param mixed $value The array or string to be encoded.
|
|
* @return mixed $value The encoded value.
|
|
*/
|
|
function rawurlencode_deep( $value ) {
|
|
return map_deep( $value, 'rawurlencode' );
|
|
}
|
|
|
|
/**
|
|
* Navigates through an array, object, or scalar, and decodes URL-encoded values
|
|
*
|
|
* @since 4.4.0
|
|
*
|
|
* @param mixed $value The array or string to be decoded.
|
|
* @return mixed $value The decoded value.
|
|
*/
|
|
function urldecode_deep( $value ) {
|
|
return map_deep( $value, 'urldecode' );
|
|
}
|
|
|
|
/**
|
|
* 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 );
|
|
}
|
|
}
|
|
|
|
return str_replace( '@', '@', $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://' . $dest;
|
|
|
|
// removed trailing [.,;:)] from URL
|
|
if ( in_array( substr($dest, -1), array('.', ',', ';', ':', ')') ) === true ) {
|
|
$ret = substr($dest, -1);
|
|
$dest = substr($dest, 0, strlen($dest)-1);
|
|
}
|
|
|
|
$dest = esc_url($dest);
|
|
if ( empty($dest) )
|
|
return $matches[0];
|
|
|
|
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 ) || preg_match( '|^<script[\s>]|i', $piece ) || preg_match( '|^<style[\s>]|i', $piece ) )
|
|
$nested_code_pre++;
|
|
elseif ( $nested_code_pre && ( '</code>' === strtolower( $piece ) || '</pre>' === strtolower( $piece ) || '</script>' === strtolower( $piece ) || '</style>' === strtolower( $piece ) ) )
|
|
$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
|
|
return preg_replace( '#(<a([ \r\n\t]+[^>]+?>|>))<a [^>]+?>([^>]+?)</a></a>#i', "$1$3</a>", $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);
|
|
return wp_slash( $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];
|
|
$atts = shortcode_parse_atts( $matches[1] );
|
|
$rel = 'nofollow';
|
|
|
|
if ( preg_match( '%href=["\'](' . preg_quote( set_url_scheme( home_url(), 'http' ) ) . ')%i', $text ) ||
|
|
preg_match( '%href=["\'](' . preg_quote( set_url_scheme( home_url(), 'https' ) ) . ')%i', $text )
|
|
) {
|
|
return "<a $text>";
|
|
}
|
|
|
|
if ( ! empty( $atts['rel'] ) ) {
|
|
$parts = array_map( 'trim', explode( ' ', $atts['rel'] ) );
|
|
if ( false === array_search( 'nofollow', $parts ) ) {
|
|
$parts[] = 'nofollow';
|
|
}
|
|
$rel = implode( ' ', $parts );
|
|
unset( $atts['rel'] );
|
|
|
|
$html = '';
|
|
foreach ( $atts as $name => $value ) {
|
|
$html .= "{$name}=\"$value\" ";
|
|
}
|
|
$text = trim( $html );
|
|
}
|
|
return "<a $text rel=\"$rel\">";
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @global array $wpsmiliestrans
|
|
*
|
|
* @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
|
|
*
|
|
* @global string|array $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 bool $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 $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]);
|
|
return preg_replace_callback( '#\=([0-9a-f]{2})#i', '_wp_iso_convert', $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 ) ) {
|
|
$datetime = strtotime( $string );
|
|
if ( false === $datetime ) {
|
|
return gmdate( $format, 0 );
|
|
}
|
|
return gmdate( $format, $datetime );
|
|
}
|
|
$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);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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 < MONTH_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 >= MONTH_IN_SECONDS ) {
|
|
$months = round( $diff / MONTH_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( $text );
|
|
|
|
/*
|
|
* translators: If your word count is based on single characters (e.g. East Asian characters),
|
|
* enter 'characters_excluding_spaces' or 'characters_including_spaces'. Otherwise, enter 'words'.
|
|
* Do not translate into your own language.
|
|
*/
|
|
if ( strpos( _x( 'words', 'Word count type. Do not translate!' ), 'characters' ) === 0 && preg_match( '/^utf\-?8$/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), $text );
|
|
}
|
|
|
|
/**
|
|
* Formats text for the editor.
|
|
*
|
|
* Generally the browsers treat everything inside a textarea as text, but
|
|
* it is still a good idea to HTML entity encode `<`, `>` and `&` in the content.
|
|
*
|
|
* The filter {@see 'format_for_editor'} is applied here. If `$text` is empty the
|
|
* filter will be applied to an empty string.
|
|
*
|
|
* @since 4.3.0
|
|
*
|
|
* @see _WP_Editors::editor()
|
|
*
|
|
* @param string $text The text to be formatted.
|
|
* @param string $default_editor The default editor for the current user.
|
|
* It is usually either 'html' or 'tinymce'.
|
|
* @return string The formatted text after filter is applied.
|
|
*/
|
|
function format_for_editor( $text, $default_editor = null ) {
|
|
if ( $text ) {
|
|
$text = htmlspecialchars( $text, ENT_NOQUOTES, get_option( 'blog_charset' ) );
|
|
}
|
|
|
|
/**
|
|
* Filter the text after it is formatted for the editor.
|
|
*
|
|
* @since 4.3.0
|
|
*
|
|
* @param string $text The formatted text.
|
|
* @param string $default_editor The default editor for the current user.
|
|
* It is usually either 'html' or 'tinymce'.
|
|
*/
|
|
return apply_filters( 'format_for_editor', $text, $default_editor );
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
*
|
|
* @global wpdb $wpdb WordPress database abstraction object.
|
|
*
|
|
* @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 return value of wp_allowed_protocols()
|
|
* @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 = str_replace( ' ', '%20', $url );
|
|
$url = preg_replace('|[^a-z0-9-~+_.?#=!&;,/:%@$\|*\'()\[\]\\x80-\\xff]|i', '', $url);
|
|
|
|
if ( '' === $url ) {
|
|
return $url;
|
|
}
|
|
|
|
if ( 0 !== stripos( $url, 'mailto:' ) ) {
|
|
$strip = array('%0d', '%0a', '%0D', '%0A');
|
|
$url = _deep_replace($strip, $url);
|
|
}
|
|
|
|
$url = str_replace(';//', '://', $url);
|
|
/* If the URL doesn't appear to contain a scheme, we
|
|
* presume it needs http:// prepended (unless a relative
|
|
* link starting with /, # or ? or a php file).
|
|
*/
|
|
if ( strpos($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 ( ( false !== strpos( $url, '[' ) ) || ( false !== strpos( $url, ']' ) ) ) {
|
|
|
|
$parsed = wp_parse_url( $url );
|
|
$front = '';
|
|
|
|
if ( isset( $parsed['scheme'] ) ) {
|
|
$front .= $parsed['scheme'] . '://';
|
|
} elseif ( '/' === $url[0] ) {
|
|
$front .= '//';
|
|
}
|
|
|
|
if ( isset( $parsed['user'] ) ) {
|
|
$front .= $parsed['user'];
|
|
}
|
|
|
|
if ( isset( $parsed['pass'] ) ) {
|
|
$front .= ':' . $parsed['pass'];
|
|
}
|
|
|
|
if ( isset( $parsed['user'] ) || isset( $parsed['pass'] ) ) {
|
|
$front .= '@';
|
|
}
|
|
|
|
if ( isset( $parsed['host'] ) ) {
|
|
$front .= $parsed['host'];
|
|
}
|
|
|
|
if ( isset( $parsed['port'] ) ) {
|
|
$front .= ':' . $parsed['port'];
|
|
}
|
|
|
|
$end_dirty = str_replace( $front, '', $url );
|
|
$end_clean = str_replace( array( '[', ']' ), array( '%5B', '%5D' ), $end_dirty );
|
|
$url = str_replace( $end_dirty, $end_clean, $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
|
|
*
|
|
* @global wpdb $wpdb WordPress database abstraction object.
|
|
*
|
|
* @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;
|
|
|
|
$original_value = $value;
|
|
$error = '';
|
|
|
|
switch ( $option ) {
|
|
case 'admin_email' :
|
|
case 'new_admin_email' :
|
|
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value );
|
|
if ( is_wp_error( $value ) ) {
|
|
$error = $value->get_error_message();
|
|
} else {
|
|
$value = sanitize_email( $value );
|
|
if ( ! is_email( $value ) ) {
|
|
$error = __( 'The email address entered did not appear to be a valid email address. Please enter a valid email address.' );
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 'thumbnail_size_w':
|
|
case 'thumbnail_size_h':
|
|
case 'medium_size_w':
|
|
case 'medium_size_h':
|
|
case 'medium_large_size_w':
|
|
case 'medium_large_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':
|
|
case 'site_icon':
|
|
$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 );
|
|
if ( is_wp_error( $value ) ) {
|
|
$error = $value->get_error_message();
|
|
} else {
|
|
$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 );
|
|
if ( is_wp_error( $value ) ) {
|
|
$error = $value->get_error_message();
|
|
} else {
|
|
$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 ( is_wp_error( $value ) ) {
|
|
$error = $value->get_error_message();
|
|
} else {
|
|
if ( preg_match( '#http(s?)://(.+)#i', $value ) ) {
|
|
$value = esc_url_raw( $value );
|
|
} else {
|
|
$error = __( 'The WordPress address you entered did not appear to be a valid URL. Please enter a valid URL.' );
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 'home':
|
|
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value );
|
|
if ( is_wp_error( $value ) ) {
|
|
$error = $value->get_error_message();
|
|
} else {
|
|
if ( preg_match( '#http(s?)://(.+)#i', $value ) ) {
|
|
$value = esc_url_raw( $value );
|
|
} else {
|
|
$error = __( 'The Site address you entered did not appear to be a valid URL. Please enter a valid URL.' );
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 'WPLANG':
|
|
$allowed = get_available_languages();
|
|
if ( ! 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_wp_error( $value ) ) {
|
|
$error = $value->get_error_message();
|
|
} else {
|
|
if ( ! is_array( $value ) )
|
|
$value = explode( ' ', $value );
|
|
|
|
$value = array_values( array_filter( array_map( 'trim', $value ) ) );
|
|
|
|
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_wp_error( $value ) ) {
|
|
$error = $value->get_error_message();
|
|
} else {
|
|
if ( ! is_array( $value ) )
|
|
$value = explode( "\n", $value );
|
|
|
|
$domains = array_values( array_filter( array_map( 'trim', $value ) ) );
|
|
$value = array();
|
|
|
|
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 ) ) {
|
|
$error = __( 'The timezone you have entered is not valid. Please select a valid timezone.' );
|
|
}
|
|
break;
|
|
|
|
case 'permalink_structure':
|
|
case 'category_base':
|
|
case 'tag_base':
|
|
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value );
|
|
if ( is_wp_error( $value ) ) {
|
|
$error = $value->get_error_message();
|
|
} else {
|
|
$value = esc_url_raw( $value );
|
|
$value = str_replace( 'http://', '', $value );
|
|
}
|
|
break;
|
|
|
|
case 'default_role' :
|
|
if ( ! get_role( $value ) && get_role( 'subscriber' ) )
|
|
$value = 'subscriber';
|
|
break;
|
|
|
|
case 'moderation_keys':
|
|
case 'blacklist_keys':
|
|
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value );
|
|
if ( is_wp_error( $value ) ) {
|
|
$error = $value->get_error_message();
|
|
} else {
|
|
$value = explode( "\n", $value );
|
|
$value = array_filter( array_map( 'trim', $value ) );
|
|
$value = array_unique( $value );
|
|
$value = implode( "\n", $value );
|
|
}
|
|
break;
|
|
}
|
|
|
|
if ( ! empty( $error ) ) {
|
|
$value = get_option( $option );
|
|
if ( function_exists( 'add_settings_error' ) ) {
|
|
add_settings_error( $option, "invalid_{$option}", $error );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Filter an option value following sanitization.
|
|
*
|
|
* @since 2.3.0
|
|
* @since 4.3.0 Added the `$original_value` parameter.
|
|
*
|
|
* @param string $value The sanitized option value.
|
|
* @param string $option The option name.
|
|
* @param string $original_value The original value passed to the function.
|
|
*/
|
|
return apply_filters( "sanitize_option_{$option}", $value, $option, $original_value );
|
|
}
|
|
|
|
/**
|
|
* Maps a function to all non-iterable elements of an array or an object.
|
|
*
|
|
* This is similar to `array_walk_recursive()` but acts upon objects too.
|
|
*
|
|
* @since 4.4.0
|
|
*
|
|
* @param mixed $value The array, object, or scalar.
|
|
* @param callable $callback The function to map onto $value.
|
|
* @return mixed The value with the callback applied to all non-arrays and non-objects inside it.
|
|
*/
|
|
function map_deep( $value, $callback ) {
|
|
if ( is_array( $value ) ) {
|
|
foreach ( $value as $index => $item ) {
|
|
$value[ $index ] = map_deep( $item, $callback );
|
|
}
|
|
} elseif ( is_object( $value ) ) {
|
|
$object_vars = get_object_vars( $value );
|
|
foreach ( $object_vars as $property_name => $property_value ) {
|
|
$value->$property_name = map_deep( $property_value, $callback );
|
|
}
|
|
} else {
|
|
$value = call_user_func( $callback, $value );
|
|
}
|
|
|
|
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 int $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
|
|
*
|
|
* @global string $_links_add_base
|
|
*
|
|
* @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
|
|
*
|
|
* @global string $_links_add_base
|
|
*
|
|
* @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
|
|
*
|
|
* @global string $_links_add_target
|
|
*
|
|
* @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
|
|
*
|
|
* @global string $_links_add_target
|
|
*
|
|
* @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
|
|
*
|
|
* @staticvar string|false $dblq
|
|
*
|
|
* @param string $text The text to be modified.
|
|
* @return string The modified text.
|
|
*/
|
|
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|false 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
|
|
*
|
|
* @staticvar string $spaces
|
|
*
|
|
* @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
|
|
*
|
|
* @staticvar bool $printed
|
|
*/
|
|
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
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @global string $wp_version
|
|
* @staticvar bool $printed
|
|
*/
|
|
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', 'https://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 ( 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,d=b.createElement("canvas"),e=d.getContext&&d.getContext("2d"),f=String.fromCharCode;return e&&e.fillText?(e.textBaseline="top",e.font="600 32px Arial","flag"===a?(e.fillText(f(55356,56806,55356,56826),0,0),d.toDataURL().length>3e3):"diversity"===a?(e.fillText(f(55356,57221),0,0),c=e.getImageData(16,16,1,1).data.toString(),e.fillText(f(55356,57221,55356,57343),0,0),c!==e.getImageData(16,16,1,1).data.toString()):("simple"===a?e.fillText(f(55357,56835),0,0):e.fillText(f(55356,57135),0,0),0!==e.getImageData(16,16,1,1).data[0])):!1}function e(a){var c=b.createElement("script");c.src=a,c.type="text/javascript",b.getElementsByTagName("head")[0].appendChild(c)}var f,g;c.supports={simple:d("simple"),flag:d("flag"),unicode8:d("unicode8"),diversity:d("diversity")},c.DOMReady=!1,c.readyCallback=function(){c.DOMReady=!0},c.supports.simple&&c.supports.flag&&c.supports.unicode8&&c.supports.diversity||(g=function(){c.readyCallback()},b.addEventListener?(b.addEventListener("DOMContentLoaded",g,!1),a.addEventListener("load",g,!1)):(a.attachEvent("onload",g),b.attachEvent("onreadystatechange",function(){"complete"===b.readyState&&c.readyCallback()})),f=c.source||{},f.concatemoji?e(f.concatemoji):f.wpemoji&&f.twemoji&&(e(f.twemoji),e(f.wpemoji)))}(window,document,window._wpemojiSettings);
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</script>
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<?php
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}
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}
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/**
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* Convert any 4 byte emoji in a string to their equivalent HTML entity.
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*
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* Currently, only Unicode 7 emoji are supported. Skin tone modifiers are allowed,
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* all other Unicode 8 emoji will be added when the spec is finalised.
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*
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* This allows us to store emoji in a DB using the utf8 character set.
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*
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* @since 4.2.0
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*
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* @param string $content The content to encode.
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* @return string The encoded content.
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*/
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function wp_encode_emoji( $content ) {
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if ( function_exists( 'mb_convert_encoding' ) ) {
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$regex = '/(
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\x23\xE2\x83\xA3 # Digits
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[\x30-\x39]\xE2\x83\xA3
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| \xF0\x9F[\x85-\x88][\xA6-\xBF] # Enclosed characters
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| \xF0\x9F[\x8C-\x97][\x80-\xBF] # Misc
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| \xF0\x9F\x98[\x80-\xBF] # Smilies
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| \xF0\x9F\x99[\x80-\x8F]
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| \xF0\x9F\x9A[\x80-\xBF] # Transport and map symbols
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)/x';
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$matches = array();
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if ( preg_match_all( $regex, $content, $matches ) ) {
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if ( ! empty( $matches[1] ) ) {
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foreach ( $matches[1] as $emoji ) {
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/*
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* UTF-32's hex encoding is the same as HTML's hex encoding.
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* So, by converting the emoji from UTF-8 to UTF-32, we magically
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* get the correct hex encoding.
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*/
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$unpacked = unpack( 'H*', mb_convert_encoding( $emoji, 'UTF-32', 'UTF-8' ) );
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if ( isset( $unpacked[1] ) ) {
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$entity = '&#x' . ltrim( $unpacked[1], '0' ) . ';';
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$content = str_replace( $emoji, $entity, $content );
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}
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}
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}
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}
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}
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return $content;
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}
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/**
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* Convert emoji to a static img element.
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*
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* @since 4.2.0
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*
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* @param string $text The content to encode.
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* @return string The encoded content.
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*/
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function wp_staticize_emoji( $text ) {
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$text = wp_encode_emoji( $text );
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/** This filter is documented in wp-includes/formatting.php */
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$cdn_url = apply_filters( 'emoji_url', 'https://s.w.org/images/core/emoji/72x72/' );
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/** This filter is documented in wp-includes/formatting.php */
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$ext = apply_filters( 'emoji_ext', '.png' );
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$output = '';
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/*
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* HTML loop taken from smiley function, which was taken from texturize function.
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* It'll never be consolidated.
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*
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* First, capture the tags as well as in between.
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*/
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$textarr = preg_split( '/(<.*>)/U', $text, -1, PREG_SPLIT_DELIM_CAPTURE );
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$stop = count( $textarr );
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// Ignore processing of specific tags.
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$tags_to_ignore = 'code|pre|style|script|textarea';
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$ignore_block_element = '';
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for ( $i = 0; $i < $stop; $i++ ) {
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$content = $textarr[$i];
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// If we're in an ignore block, wait until we find its closing tag.
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if ( '' == $ignore_block_element && preg_match( '/^<(' . $tags_to_ignore . ')>/', $content, $matches ) ) {
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$ignore_block_element = $matches[1];
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}
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// If it's not a tag and not in ignore block.
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if ( '' == $ignore_block_element && strlen( $content ) > 0 && '<' != $content[0] ) {
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$matches = array();
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if ( preg_match_all( '/(DZ(e[6-9a-f]|f[0-9a-f]);){2}/', $content, $matches ) ) {
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if ( ! empty( $matches[0] ) ) {
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foreach ( $matches[0] as $flag ) {
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$chars = str_replace( array( '&#x', ';'), '', $flag );
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list( $char1, $char2 ) = str_split( $chars, 5 );
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$entity = sprintf( '<img src="%s" alt="%s" class="wp-smiley" style="height: 1em; max-height: 1em;" />', $cdn_url . $char1 . '-' . $char2 . $ext, html_entity_decode( $flag ) );
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$content = str_replace( $flag, $entity, $content );
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}
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}
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}
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// Loosely match the Emoji Unicode range.
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$regex = '/(&#x[2-3][0-9a-f]{3};|[1-6][0-9a-f]{2};)/';
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$matches = array();
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if ( preg_match_all( $regex, $content, $matches ) ) {
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if ( ! empty( $matches[1] ) ) {
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foreach ( $matches[1] as $emoji ) {
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$char = str_replace( array( '&#x', ';'), '', $emoji );
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$entity = sprintf( '<img src="%s" alt="%s" class="wp-smiley" style="height: 1em; max-height: 1em;" />', $cdn_url . $char . $ext, html_entity_decode( $emoji ) );
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$content = str_replace( $emoji, $entity, $content );
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}
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}
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}
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}
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// Did we exit ignore block.
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if ( '' != $ignore_block_element && '</' . $ignore_block_element . '>' == $content ) {
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$ignore_block_element = '';
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}
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$output .= $content;
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}
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return $output;
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}
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/**
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* Convert emoji in emails into static images.
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*
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* @since 4.2.0
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*
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* @param array $mail The email data array.
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* @return array The email data array, with emoji in the message staticized.
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*/
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function wp_staticize_emoji_for_email( $mail ) {
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if ( ! isset( $mail['message'] ) ) {
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return $mail;
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}
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/*
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* We can only transform the emoji into images if it's a text/html email.
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* To do that, here's a cut down version of the same process that happens
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* in wp_mail() - get the Content-Type from the headers, if there is one,
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* then pass it through the wp_mail_content_type filter, in case a plugin
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* is handling changing the Content-Type.
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*/
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$headers = array();
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if ( isset( $mail['headers'] ) ) {
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if ( is_array( $mail['headers'] ) ) {
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$headers = $mail['headers'];
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} else {
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$headers = explode( "\n", str_replace( "\r\n", "\n", $mail['headers'] ) );
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}
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}
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foreach ( $headers as $header ) {
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if ( strpos($header, ':') === false ) {
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continue;
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}
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// Explode them out.
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list( $name, $content ) = explode( ':', trim( $header ), 2 );
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// Cleanup crew.
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$name = trim( $name );
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$content = trim( $content );
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if ( 'content-type' === strtolower( $name ) ) {
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if ( strpos( $content, ';' ) !== false ) {
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list( $type, $charset ) = explode( ';', $content );
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$content_type = trim( $type );
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} else {
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$content_type = trim( $content );
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}
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break;
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}
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}
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// Set Content-Type if we don't have a content-type from the input headers.
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if ( ! isset( $content_type ) ) {
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$content_type = 'text/plain';
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}
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/** This filter is documented in wp-includes/pluggable.php */
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$content_type = apply_filters( 'wp_mail_content_type', $content_type );
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if ( 'text/html' === $content_type ) {
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$mail['message'] = wp_staticize_emoji( $mail['message'] );
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}
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return $mail;
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}
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/**
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* Shorten an URL, to be used as link text.
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*
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* @since 1.2.0
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* @since 4.4.0 Moved to wp-includes/formatting.php from wp-admin/includes/misc.php and added $length param.
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*
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* @param string $url URL to shorten.
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* @param int $length Optional. Maximum length of the shortened URL. Default 35 characters.
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* @return string Shortened URL.
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*/
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function url_shorten( $url, $length = 35 ) {
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$stripped = str_replace( array( 'https://', 'http://', 'www.' ), '', $url );
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$short_url = untrailingslashit( $stripped );
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if ( strlen( $short_url ) > $length ) {
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$short_url = substr( $short_url, 0, $length - 3 ) . '…';
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}
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return $short_url;
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}
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