0) { writeOutput($captionArray,$descArray); } else { // do nothing // an error has occurred (and hopefully an error code was displayed) } } else { echo '0'; // insuficcient parameters were passed by URL } } function toArray($type,$content) { //standardize on \n for eol character $content = preg_replace("/\r\n|\r|\n/m", "\n", trim($content)); $cues = explode("\n\n",$content); $n = 0; // counter of kept cues if (sizeof($cues)>1) { if (trim(strtoupper($cues[0])) == 'WEBVTT') { //spec requires WEBVTT on the first line $i=1; while ($i < sizeof($cues)) { $cue = explode("\n",$cues[$i]); if (sizeof($cue) >=2) { // this seems to be a valid cue. Keep it $times = explode(' --> ',$cue[0]); $c['type'][$n] = $type; $c['start'][$n] = toSeconds(trim($times[0])); $c['end'][$n] = toSeconds(trim($times[1])); $cueText = $cue[1]; if(sizeof($cue) > 2) { // this is a multi-line cue $j=2; while ($j < sizeof($cue)) { // ensure there's one space between cues, but not more than one $cueText .= ' '.trim($cue[$j]); $j++; } } $c['text'][$n] = $cueText; $n++; } $i++; } } else { echo '2'; // this is not a WebVTT file } } else { echo '3'; // too few cues were found } return $c; } function toSeconds($time) { $seconds = 0; if ($time) { $parts = explode(':',$time); $i=0; while ($i < sizeof($parts)) { $seconds = $seconds * 60 + str_replace(',','.',$parts[$i]); $i++; } return $seconds; } } function writeOutput($c,$d) { // merge arrays and sort by start time $allCues = array_merge_recursive($c,$d); array_multisort($allCues['start'],$allCues['end'],$allCues['type'],$allCues['text']); //echo "
";
//var_dump($allCues);	
//echo "
"; $numCues = sizeof($allCues['start']); if ($numCues > 0) { echo '
'."\n"; $divOpen = false; $descOpen = false; $i=0; while ($i < $numCues) { $cue = trim($allCues['text'][$i]); $cueType = $allCues['type'][$i]; // make transcript more readable by breaking divs on parenthetical or bracketed text // brackets contain unspoken information such as sounds or speaker names //standardize on square brackets [] // $cue = @preg_replace("(|（", "[", $cue); // this wasn't working // $cue = @preg_replace(")|）", "]", $cue); // trying to account for various ( symbols $cue = str_replace('(','[',$cue); $cue = str_replace(')',']',$cue); if ($descOpen && $cueType != 'desc') { // close description div echo "\n
\n"; $descOpen = false; $divOpen = false; } // if cue contains bracketed content, or is the start of a new description // both make good breaking points if (substr($cue,0,1) == '[' || ($cueType =='desc' && !$descOpen)) { if ($divOpen) { // close the preceding div echo "\n\n\n"; if ($cueType == 'desc') { // this is the start of a new description (following a caption) echo '
'."\n"; // preface description with a hidden prompt for non-visual users echo ''; $descOpen = true; } else { // this is the start of a new caption with bracketed content echo "
\n"; } } else { // div is not already open if ($cueType == 'desc') { // this is the start of a new description echo '
'."\n"; // preface description with a hidden prompt for non-visual users echo ''; $descOpen = true; } else { // this is a new caption echo "
\n"; $divOpen = true; } } $bracketEndPos = strpos($cue,']'); if (substr($cue,0,1) == '[') { echo ''; echo '['.ucfirst(trim(substr($cue,1,$bracketEndPos-1))).']'; echo "\n"; if (strlen($cue) > ($bracketEndPos+1)) { // there is additional content in this cue, not just bracketed content $cue = substr($cue,$bracketEndPos+1); } else { // nothing in this queue but bracketed text. Close the div echo "
\n"; $divOpen = false; $cue = ''; } } } // now write the cue if ($cue != '') { if ($cueType == 'desc') { echo $cue.' '; } else { // add attributes to make this cue clickable and highlightable // Note: tabindex="0" will be added dynamically based on user preference echo ''; echo $cue.' '; echo " "; } } $i++; } if ($divOpen) { //close it echo "
\n"; } echo "
\n"; //close transcript } } ?>