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Improve performance of seems_utf8() and uf8_uri_encode(). fixes #5320 

git-svn-id: http://svn.automattic.com/wordpress/trunk@6314 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
ryan 2007-11-05 17:13:43 +00:00
parent dd29614f60
commit d10f9a825d
1 changed files with 11 additions and 5 deletions
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16
wp-includes/formatting.php
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@ -94,7 +94,8 @@ function wpautop($pee, $br = 1) {
function seems_utf8($Str) { # by bmorel at ssi dot fr
for ($i=0; $i<strlen($Str); $i++) {
$length = strlen($Str);
for ($i=0; $i < $length; $i++) {
if (ord($Str[$i]) < 0x80) continue; # 0bbbbbbb
elseif ((ord($Str[$i]) & 0xE0) == 0xC0) $n=1; # 110bbbbb
elseif ((ord($Str[$i]) & 0xF0) == 0xE0) $n=2; # 1110bbbb
@ -103,7 +104,7 @@ function seems_utf8($Str) { # by bmorel at ssi dot fr
elseif ((ord($Str[$i]) & 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 == strlen($Str)) || ((ord($Str[$i]) & 0xC0) != 0x80))
if ((++$i == $length) || ((ord($Str[$i]) & 0xC0) != 0x80))
return false;
}
}
@ -132,27 +133,32 @@ function utf8_uri_encode( $utf8_string, $length = 0 ) {
$unicode = '';
$values = array();
$num_octets = 1;
$unicode_length = 0;
for ($i = 0; $i < strlen( $utf8_string ); $i++ ) {
$string_length = strlen( $utf8_string );
for ($i = 0; $i < $string_length; $i++ ) {
$value = ord( $utf8_string[ $i ] );
if ( $value < 128 ) {
if ( $length && ( strlen($unicode) + 1 > $length ) )
if ( $length && ( $unicode_length >= $length ) )
break;
$unicode .= chr($value);
$unicode_length++;
} else {
if ( count( $values ) == 0 ) $num_octets = ( $value < 224 ) ? 2 : 3;
$values[] = $value;
if ( $length && ( (strlen($unicode) + ($num_octets * 3)) > $length ) )
if ( $length && ( $unicode_length + ($num_octets * 3) ) > $length )
break;
if ( count( $values ) == $num_octets ) {
if ($num_octets == 3) {
$unicode .= '%' . dechex($values[0]) . '%' . dechex($values[1]) . '%' . dechex($values[2]);
$unicode_length += 9;
} else {
$unicode .= '%' . dechex($values[0]) . '%' . dechex($values[1]);
$unicode_length += 6;
}
$values = array();