Normalize the UTF-8 and ISO-8859-1 charset strings stored in blog_charset to make them friendlier with PHP functions that accept a charset such as htmlspecialchars().

fixes #23688


git-svn-id: http://core.svn.wordpress.org/trunk@24510 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Ryan Boren 2013-06-25 19:03:17 +00:00
parent 5744245cc3
commit 419fea1a16
2 changed files with 23 additions and 0 deletions

View File

@ -179,6 +179,7 @@ add_filter( 'the_author', 'ent2ncr', 8 );
// Misc filters
add_filter( 'option_ping_sites', 'privacy_ping_filter' );
add_filter( 'option_blog_charset', '_wp_specialchars' ); // IMPORTANT: This must not be wp_specialchars() or esc_html() or it'll cause an infinite loop
add_filter( 'option_blog_charset', '_canonical_charset' );
add_filter( 'option_home', '_config_wp_home' );
add_filter( 'option_siteurl', '_config_wp_siteurl' );
add_filter( 'tiny_mce_before_init', '_mce_set_direction' );

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@ -3998,3 +3998,25 @@ function get_tag_regex( $tag ) {
return;
return sprintf( '<%1$s[^<]*(?:>[\s\S]*<\/%1$s>|\s*\/>)', tag_escape( $tag ) );
}
/**
* Return a canonical form of the provided charset appropriate for passing to PHP
* functions such as htmlspecialchars() and charset html attributes.
*
* @link http://core.trac.wordpress.org/ticket/23688
* @since 3.6.0
*
* @param string A charset name
* @return string The canonical form of the charset
*/
function _canonical_charset( $charset ) {
if ( 'UTF-8' === $charset || 'utf-8' === $charset || 'utf8' === $charset ||
'UTF8' === $charset )
return 'UTF-8';
if ( 'ISO-8859-1' === $charset || 'iso-8859-1' === $charset ||
'iso8859-1' === $charset || 'ISO8859-1' === $charset )
return 'ISO-8859-1';
return $charset;
}