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Unicode bi-directional text: Finally a working fix

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Michael Foster 2013-08-19 23:47:56 +10:00
parent 5438d7cf64
commit abfdd38e59
4 changed files with 49 additions and 7 deletions
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45
inc/display.php
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@ -218,11 +218,50 @@ function truncate($body, $url, $max_lines = false, $max_chars = false) {
return $body;
}
function bidi_cleanup($str) {
// Removes all embedded RTL and LTR unicode formatting blocks in a string so that
function bidi_cleanup($data) {
// Closes all embedded RTL and LTR unicode formatting blocks in a string so that
// it can be used inside another without controlling its direction.
return "<bdi>$str</bdi>";
$explicits = '\xE2\x80\xAA|\xE2\x80\xAB|\xE2\x80\xAD|\xE2\x80\xAE';
$pdf = '\xE2\x80\xAC';
preg_match_all("!$explicits!", $data, $m1, PREG_OFFSET_CAPTURE | PREG_SET_ORDER);
preg_match_all("!$pdf!", $data, $m2, PREG_OFFSET_CAPTURE | PREG_SET_ORDER);
if (count($m1) || count($m2)){
$p = array();
foreach ($m1 as $m){ $p[$m[0][1]] = 'push'; }
foreach ($m2 as $m){ $p[$m[0][1]] = 'pop'; }
ksort($p);
$offset = 0;
$stack = 0;
foreach ($p as $pos => $type){
if ($type == 'push'){
$stack++;
}else{
if ($stack){
$stack--;
}else{
# we have a pop without a push - remove it
$data = substr($data, 0, $pos-$offset)
.substr($data, $pos+3-$offset);
$offset += 3;
}
}
}
# now add some pops if your stack is bigger than 0
for ($i=0; $i<$stack; $i++){
$data .= "\xE2\x80\xAC";
}
return $data;
}
return $data;
}
function secure_link_confirm($text, $title, $confirm_message, $href) {