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Optimize regexp usage in `wptexturize()` for a "3x Performance Boost." 

Props miqrogroove.
See #28724.

Built from https://develop.svn.wordpress.org/trunk@28986


git-svn-id: http://core.svn.wordpress.org/trunk@28775 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Scott Taylor 2014-07-04 01:15:15 +00:00
parent 9181f36b7e
commit 5eb23f8e3c
1 changed files with 41 additions and 20 deletions
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61
wp-includes/formatting.php
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@ -96,11 +96,13 @@ function wptexturize($text, $reset = false) {
$static_characters = array_merge( array( '...', '``', '\'\'', ' (tm)' ), $cockney );
$static_replacements = array_merge( array( '…', $opening_quote, $closing_quote, ' ™' ), $cockneyreplace );
$spaces = wp_spaces_regexp();
// Pattern-based replacements of characters.
// Sort the remaining patterns into several arrays for performance tuning.
$dynamic_characters = array( 'apos' => array(), 'quote' => array(), 'dash' => array() );
$dynamic_replacements = array( 'apos' => array(), 'quote' => array(), 'dash' => array() );
$dynamic = array();
$spaces = wp_spaces_regexp();
// '99' and '99" are ambiguous among other patterns; assume it's an abbreviated year at the end of a quotation.
if ( "'" !== $apos || "'" !== $closing_single_quote ) {
@ -115,10 +117,7 @@ function wptexturize($text, $reset = false) {
$dynamic[ '/\'(?=\d\d(?:\Z|(?![%\d]|[.,]\d)))/' ] = $apos;
}
// Quoted Numbers like "42" or '42.00'
if ( '"' !== $opening_quote && '"' !== $closing_quote ) {
$dynamic[ '/(?<=\A|' . $spaces . ')"(\d[.,\d]*)"/' ] = $opening_quote . '$1' . $closing_quote;
}
// Quoted Numbers like '0.42'
if ( "'" !== $opening_single_quote && "'" !== $closing_single_quote ) {
$dynamic[ '/(?<=\A|' . $spaces . ')\'(\d[.,\d]*)\'/' ] = $opening_single_quote . '$1' . $closing_single_quote;
}
@ -133,16 +132,30 @@ function wptexturize($text, $reset = false) {
$dynamic[ '/(?<!' . $spaces . ')\'(?!\Z|[.,:;"\'(){}[\]\-]|&[lg]t;|' . $spaces . ')/' ] = $apos;
}
// 9" (double prime)
if ( '"' !== $double_prime ) {
$dynamic[ '/(?<=\d)"/' ] = $double_prime;
}
// 9' (prime)
if ( "'" !== $prime ) {
$dynamic[ '/(?<=\d)\'/' ] = $prime;
}
// Single quotes followed by spaces or ending punctuation.
if ( "'" !== $closing_single_quote ) {
$dynamic[ '/\'(?=\Z|[.,)}\-\]]|&gt;|' . $spaces . ')/' ] = $closing_single_quote;
}
$dynamic_characters['apos'] = array_keys( $dynamic );
$dynamic_replacements['apos'] = array_values( $dynamic );
$dynamic = array();
// Quoted Numbers like "42"
if ( '"' !== $opening_quote && '"' !== $closing_quote ) {
$dynamic[ '/(?<=\A|' . $spaces . ')"(\d[.,\d]*)"/' ] = $opening_quote . '$1' . $closing_quote;
}
// 9" (double prime)
if ( '"' !== $double_prime ) {
$dynamic[ '/(?<=\d)"/' ] = $double_prime;
}
// Double quote at start, or preceded by (, {, <, [, -, or spaces, and not followed by spaces.
if ( '"' !== $opening_quote ) {
$dynamic[ '/(?<=\A|[([{\-]|&lt;|' . $spaces . ')"(?!' . $spaces . ')/' ] = $opening_quote;
@ -152,20 +165,19 @@ function wptexturize($text, $reset = false) {
if ( '"' !== $closing_quote ) {
$dynamic[ '/"/' ] = $closing_quote;
}
// Single quotes followed by spaces or ending punctuation.
if ( "'" !== $closing_single_quote ) {
$dynamic[ '/\'(?=\Z|[.,)}\-\]]|&gt;|' . $spaces . ')/' ] = $closing_single_quote;
}
$dynamic_characters['quote'] = array_keys( $dynamic );
$dynamic_replacements['quote'] = array_values( $dynamic );
$dynamic = array();
// Dashes and spaces
$dynamic[ '/---/' ] = $em_dash;
$dynamic[ '/(?<=' . $spaces . ')--(?=' . $spaces . ')/' ] = $em_dash;
$dynamic[ '/(?<!xn)--/' ] = $en_dash;
$dynamic[ '/(?<=' . $spaces . ')-(?=' . $spaces . ')/' ] = $en_dash;
$dynamic_characters = array_keys( $dynamic );
$dynamic_replacements = array_values( $dynamic );
$dynamic_characters['dash'] = array_keys( $dynamic );
$dynamic_replacements['dash'] = array_values( $dynamic );
}
// Must do this every time in case plugins use these filters in a context sensitive manner
@ -237,7 +249,16 @@ function wptexturize($text, $reset = false) {
// This is neither a delimeter, nor is this content inside of no_texturize pairs. Do texturize.
$curl = str_replace( $static_characters, $static_replacements, $curl );
$curl = preg_replace( $dynamic_characters, $dynamic_replacements, $curl );
if ( false !== strpos( $curl, "'" ) ) {
$curl = preg_replace( $dynamic_characters['apos'], $dynamic_replacements['apos'], $curl );
}
if ( false !== strpos( $curl, '"' ) ) {
$curl = preg_replace( $dynamic_characters['quote'], $dynamic_replacements['quote'], $curl );
}
if ( false !== strpos( $curl, '-' ) ) {
$curl = preg_replace( $dynamic_characters['dash'], $dynamic_replacements['dash'], $curl );
}
// 9x9 (times), but never 0x9999
if ( 1 === preg_match( '/(?<=\d)x-?\d/', $curl ) ) {