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fix for MDL-13174 ' replace calls to html_entity_decode() with hotpot_charcode_to_utf8() because html_entity_decode is broken in PHP4

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gbateson 2008-01-31 07:28:30 +00:00
parent 2deffacca5
commit 9d042298ff
1 changed files with 23 additions and 1 deletions
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24
question/format/hotpot/format.php
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@ -506,7 +506,8 @@ class qformat_hotpot extends qformat_default {
}
function hotpot_prepare_str($str) {
// convert html entities to unicode and add slashes
$str = preg_replace('/&#[x0-9A-F]+;/ie', "html_entity_decode('\\0',ENT_NOQUOTES,'UTF-8')", $str);
$str = preg_replace('/&#x([0-9a-f]+);/ie', "hotpot_charcode_to_utf8(hexdec('\\1'))", $str);
$str = preg_replace('/&#([0-9]+);/e', "hotpot_charcode_to_utf8(\\1)", $str);
return addslashes($str);
}
} // end class
@ -606,6 +607,27 @@ class hotpot_xml_tree {
}
}
function hotpot_charcode_to_utf8($charcode) {
if ($charcode <= 0x7F) {
// ascii char (roman alphabet + punctuation)
return chr($charcode);
}
if ($charcode <= 0x7FF) {
// 2-byte char
return chr(($charcode >> 0x06) + 0xC0).chr(($charcode & 0x3F) + 128);
}
if ($charcode <= 0xFFFF) {
// 3-byte char
return chr(($charcode >> 0x0C) + 0xE0).chr((($charcode >> 0x06) & 0x3F) + 0x80).chr(($charcode & 0x3F) + 0x80);
}
if ($charcode <= 0x1FFFFF) {
// 4-byte char
return chr(($charcode >> 0x12) + 0xF0).chr((($charcode >> 0x0C) & 0x3F) + 0x80).chr((($charcode >> 0x06) & 0x3F) + 0x80).chr(($charcode & 0x3F) + 0x80);
}
// unidentified char code !!
return ' ';
}
function hotpot_utf8_to_html_entity($char) {
// http://www.zend.com/codex.php?id=835&single=1