Server : Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips PHP/7.4.20 System : Linux st2.domain.com 3.10.0-1127.10.1.el7.x86_64 #1 SMP Wed Jun 3 14:28:03 UTC 2020 x86_64 User : apache ( 48) PHP Version : 7.4.20 Disable Function : NONE Directory : /var/www/html/123vid/vendor/mantas-done/subtitles/src/ |
<?php namespace Done\Subtitles;
interface SubtitleContract {
public static function convert($from_file_path, $to_file_path);
public static function load($file_name_or_file_content, $extension = null); // load file
public function save($file_name); // save file
public function content($format); // output file content (instead of saving to file)
public function add($start, $end, $text); // add one line or several
public function remove($from, $till); // delete text from subtitles
public function shiftTime($seconds, $from = 0, $till = null); // add or subtract some amount of seconds from all times
public function shiftTimeGradually($seconds_to_shift, $from = 0, $till = null);
public function getInternalFormat();
public function setInternalFormat(array $internal_format);
}
class Subtitles implements SubtitleContract {
protected $input;
protected $input_format;
protected $internal_format; // data in internal format (when file is converted)
protected $converter;
protected $output;
public static function convert($from_file_path, $to_file_path)
{
static::load($from_file_path)->save($to_file_path);
}
public static function load($file_name_or_file_content, $extension = null)
{
if (file_exists($file_name_or_file_content)) {
return static::loadFile($file_name_or_file_content);
}
return static::loadString($file_name_or_file_content, $extension);
}
public function save($path)
{
$file_extension = Helpers::fileExtension($path);
$content = $this->content($file_extension);
file_put_contents($path, $content);
return $this;
}
public function add($start, $end, $text)
{
// @TODO validation
// @TODO check subtitles to not overlap
$this->internal_format[] = [
'start' => $start,
'end' => $end,
'lines' => is_array($text) ? $text : [$text],
];
$this->sortInternalFormat();
return $this;
}
public function remove($from, $till)
{
foreach ($this->internal_format as $k => $block) {
if ($this->shouldBlockBeRemoved($block, $from, $till)) {
unset($this->internal_format[$k]);
}
}
$this->internal_format = array_values($this->internal_format); // reorder keys
return $this;
}
public function shiftTime($seconds, $from = 0, $till = null)
{
foreach ($this->internal_format as &$block) {
if (!Helpers::shouldBlockTimeBeShifted($from, $till, $block['start'], $block['end'])) {
continue;
}
$block['start'] += $seconds;
$block['end'] += $seconds;
}
unset($block);
$this->sortInternalFormat();
return $this;
}
public function shiftTimeGradually($seconds, $from = 0, $till = null)
{
if ($till === null) {
$till = $this->maxTime();
}
foreach ($this->internal_format as &$block) {
$block = Helpers::shiftBlockTime($block, $seconds, $from, $till);
}
unset($block);
$this->sortInternalFormat();
return $this;
}
public function content($format)
{
$format = strtolower(trim($format, '.'));
$converter = Helpers::getConverter($format);
$content = $converter->internalFormatToFileContent($this->internal_format);
return $content;
}
// for testing only
public function getInternalFormat()
{
return $this->internal_format;
}
// for testing only
public function setInternalFormat(array $internal_format)
{
$this->internal_format = $internal_format;
return $this;
}
/**
* @deprecated Use shiftTime() instead
*/
public function time($seconds, $from = null, $till = null)
{
return $this->shiftTime($seconds, $from, $till);
}
// -------------------------------------- private ------------------------------------------------------------------
protected function sortInternalFormat()
{
usort($this->internal_format, function($item1, $item2) {
if ($item2['start'] == $item1['start']) {
return 0;
} elseif ($item2['start'] < $item1['start']) {
return 1;
} else {
return -1;
}
});
}
protected function maxTime()
{
$max_time = 0;
foreach ($this->internal_format as $block) {
if ($max_time < $block['end']) {
$max_time = $block['end'];
}
}
return $max_time;
}
protected function shouldBlockBeRemoved($block, $from, $till) {
return ($from < $block['start'] && $block['start'] < $till) || ($from < $block['end'] && $block['end'] < $till);
}
public static function loadFile($path, $extension = null)
{
if (!file_exists($path)) {
throw new \Exception("file doesn't exist: " . $path);
}
$string =file_get_contents($path);
if (!$extension) {
$extension = Helpers::fileExtension($path);
}
return static::loadString($string, $extension);
}
public static function loadString($text, $extension)
{
$converter = new static;
$converter->input = Helpers::normalizeNewLines(Helpers::removeUtf8Bom($text));
$converter->input_format = $extension;
$input_converter = Helpers::getConverter($extension);
$converter->internal_format = $input_converter->fileContentToInternalFormat($converter->input);
return $converter;
}
}
// https://github.com/captioning/captioning has potential, but :(
// https://github.com/snikch/captions-php too small