/**
* @param string $start
* @param string $stop
* @param string $text
* @param string $settings
* @param string $id
* @param string $note
* @return WebvttCue
*/
private function createCue($start, $stop, $text, $settings, $id, $note)
{
$cue = new WebvttCue($start, $stop, $text);
$tmp = explode(' ', trim($settings));
foreach ($tmp as $setting) {
$tmp2 = explode(':', $setting);
if (count($tmp2) !== 2) {
continue;
}
$cue->setSetting($tmp2[0], $tmp2[1]);
}
if ($id !== null) {
$cue->setIdentifier($id);
}
if (!empty($note)) {
$cue->setNote($note);
}
return $cue;
}
public function parse()
{
$handle = fopen($this->filename, "r");
$parsing_errors = array();
if ($handle) {
$case = 'header';
$i = 1;
while (($line = fgets($handle)) !== false) {
// checking header
if ($case === 'header' && trim($line) != 'WEBVTT') {
$parsing_errors[] = 'Missing "WEBVTT" at the beginning of the file';
} elseif ($case === 'header') {
$case = 'region';
continue;
}
if ($case !== 'header') {
// parsing regions
if ($case === 'region' && substr($line, 0, 7) == 'Region:') {
$this->addRegion(WebvttRegion::parseFromString($line));
continue;
}
if ($case === 'region' && trim($line) === '') {
$case = 'body';
continue;
}
if ($case === 'body') {
// parsing notes
if (substr($line, 0, 4) === 'NOTE') {
if (trim($line) === 'NOTE') {
$note = $this->lineEnding;
} else {
$note = trim(ltrim($line, 'NOTE ')) . $this->lineEnding;
}
// note continues until there is a blank line
while (trim($line = fgets($handle)) !== '') {
$note .= trim($line) . $this->lineEnding;
$i++;
}
continue;
}
// parsing cues
$id_match = !strstr($line, '-->') && trim($line) != '';
$matches = array();
$timecode_match = preg_match(self::TIMECODE_PATTERN, $line, $matches);
if ($id_match || $timecode_match) {
$id = null;
$start = null;
$stop = null;
$settings = null;
$text = '';
if ($id_match) {
$id = $line;
$line = fgets($handle);
$matches = array();
$timecode_match = preg_match(self::TIMECODE_PATTERN, $line, $matches);
}
if (!$timecode_match) {
$parsing_errors[] = 'Malformed cue detected at line ' . $i;
} else {
$start = $matches[1];
$stop = $matches[2];
$settings = trim($matches[3]);
}
// cue continues until there is a blank line
while (trim($line = fgets($handle)) !== '') {
$text .= trim($line) . $this->lineEnding;
}
// make the cue object and add it to the file
$cue = new WebvttCue($start, $stop, $text);
$tmp = explode(' ', trim($settings));
foreach ($tmp as $setting) {
$tmp2 = explode(':', $setting);
if (count($tmp2) !== 2) {
continue;
}
$cue->setSetting($tmp2[0], $tmp2[1]);
}
if ($id !== null) {
$cue->setIdentifier($id);
}
if (!empty($note)) {
$cue->setNote($note);
unset($note);
}
$this->addCue($cue);
unset($cue);
continue;
}
}
}
$i++;
}
} else {
throw new \Exception('Could not read the file "' . $this->filename . '".');
}
fclose($handle);
if (count($parsing_errors) > 0) {
throw new \Exception('The following errors were found while parsing the file:' . "\n" . print_r($parsing_errors, true));
}
return $this;
}