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Optimize next*() functions in DirectLex, add test for offset. Update Lexer documents.

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git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@90 48356398-32a2-884e-a903-53898d9a118a
This commit is contained in:
Edward Z. Yang
2006-07-22 18:55:34 +00:00
parent eac83995e1
commit ac1e62e043
3 changed files with 45 additions and 50 deletions
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27
library/HTMLPurifier/Lexer/DirectLex.php
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@@ -62,32 +62,13 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
}
function nextQuote($string, $offset = 0) {
$quotes = array('"', "'");
return $this->next($string, $quotes, $offset);
$next = strcspn($string, '"\'', $offset) + $offset;
return strlen($string) == $next ? false : $next;
}
function nextWhiteSpace($string, $offset = 0) {
$spaces = array(chr(0x20), chr(0x9), chr(0xD), chr(0xA));
return $this->next($string, $spaces, $offset);
}
function next($haystack, $needles, $offset = 0) {
if (is_string($needles)) {
$string_needles = $needles;
$needles = array();
$size = strlen($string_needles);
for ($i = 0; $i < $size; $i++) {
$needles[] = $string_needles{$i};
}
}
$positions = array();
foreach ($needles as $needle) {
$position = strpos($haystack, $needle, $offset);
if ($position !== false) {
$positions[] = $position;
}
}
return empty($positions) ? false : min($positions);
$next = strcspn($string, "\x20\x09\x0D\x0A", $offset) + $offset;
return strlen($string) == $next ? false : $next;
}
function tokenizeHTML($string) {