The page you are looking for has expired.', "\n";
}
}
$exec_time = gettimeofday(true) - $start_time;
}
// new diff
else {
if ( isset($_POST['granularity']) && ctype_digit($_POST['granularity']) ) {
$granularity = max(min(intval($_POST['granularity']),3),0);
}
if ( !empty($_POST['from']) || !empty($_POST['to'])) {
if ( !empty($_POST['from']) ) {
$from_text = $_POST['from'];
}
if ( !empty($_POST['to']) ) {
$to_text = $_POST['to'];
}
}
// limit input
$from_text = substr($from_text, 0, 1024*100);
$to_text = substr($to_text, 0, 1024*100);
// ensure input is suitable for diff
$from_text = mb_convert_encoding($from_text, 'HTML-ENTITIES', 'UTF-8');
$to_text = mb_convert_encoding($to_text, 'HTML-ENTITIES', 'UTF-8');
$granularityStacks = array(
FineDiff::$paragraphGranularity,
FineDiff::$sentenceGranularity,
FineDiff::$wordGranularity,
FineDiff::$characterGranularity
);
$diff_opcodes = FineDiff::getDiffOpcodes($from_text, $to_text, $granularityStacks[$granularity]);
$diff_opcodes_len = strlen($diff_opcodes);
$exec_time = gettimeofday(true) - $start_time;
if ( $diff_opcodes_len ) {
$data_key = sha1(serialize(array('granularity' => $granularity, 'from_text' => $from_text, 'diff_opcodes' => $diff_opcodes)));
$filename = "{$data_key}{$compressed_serialized_filename_extension}";
if ( !file_exists("./cache/{$filename}") ) {
// purge cache if too many files
if ( !(time() % 100) ) {
$files = glob("./cache/*{$compressed_serialized_filename_extension}");
$num_files = $files ? count($files) : 0;
if ( $num_files > $cache_hi_water_mark ) {
$sorted_files = array();
foreach ( $files as $file ) {
$sorted_files[strval(@filemtime("./cache/{$file}")).$file] = $file;
}
ksort($sorted_files);
foreach ( $sorted_files as $file ) {
@unlink("./cache/{$file}");
$num_files -= 1;
if ( $num_files < $cache_lo_water_mark ) {
break;
}
}
}
}
// save diff in cache
$data_to_serialize = array(
'granularity' => $granularity,
'from_text' => $from_text,
'diff_opcodes' => $diff_opcodes,
'data_key' => $data_key,
);
$serialized_data = serialize($data_to_serialize);
@file_put_contents("./cache/{$filename}", gzcompress($serialized_data));
@chmod("./cache/{$filename}", 0666);
}
}
}
$rendered_diff = FineDiff::renderDiffToHTMLFromOpcodes($from_text, $diff_opcodes);
$from_len = strlen($from_text);
$to_len = strlen($to_text);
if ( !empty($data_key) ) {
echo '
Tempolink: http://', $_SERVER['HTTP_HOST'], '/viewdiff.php?data=', $data_key, ' (This link is not viewable by others, unless it has been explicitly shared by the creator. This link will exist for a limited period of time, which depends on how often it is visited.)
', "\n";
}
?>
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