1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 <?php
/*-----8<--------------------------------------------------------------------
*
* BEdita - a semantic content management framework
*
* Copyright 2018 ChannelWeb Srl, Chialab Srl
*
* This file is part of BEdita: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* BEdita is distributed WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with BEdita (see LICENSE.LGPL).
* If not, see <http://gnu.org/licenses/lgpl-3.0.html>.
*
*------------------------------------------------------------------->8-----
*/
/**
* Video caption
*/
class Caption extends BeditaAnnotationModel
{
public $useTable = 'annotations';
public $actsAs = array();
public $validate = array(
// 'description' => array(
// 'rule' => 'notEmpty',
// 'message' => 'This field cannot be left blank'
// ),
);
public $objectTypesGroups = array('nodashboard');
/**
* Convert SRT to VTT before entity is persisted to datasource.
*
* @return void
*/
public function beforeValidate()
{
parent::beforeValidate();
if (empty($this->data[$this->alias]['title'])) {
// Use language label as default title.
$lang = Configure::read('defaultLang');
if (!empty($this->data[$this->alias]['lang'])) {
$lang = $this->data[$this->alias]['lang'];
}
$this->data[$this->alias]['title'] = Configure::read(sprintf('langOptions.%s', $lang)) ?: '';
}
if (!empty($this->data[$this->alias]['description'])) {
// Convert SRT to VTT.
$this->data[$this->alias]['description'] = static::srtToVtt($this->data[$this->alias]['description']);
}
}
/**
* Convert SRT to VTT.
*
* @param string $contents SRT caption to convert to VTT.
* @return string|null
*/
public static function srtToVtt($contents)
{
if (!is_string($contents)) {
// WTF!?
return null;
}
$contents = preg_replace('/(\n\r|\r\n|\n|\r)/', "\n", $contents);
if (preg_match('/^WEBVTT\n\n/', $contents) != false) {
// Already a VTT.
return $contents;
}
// Add header.
$contents = 'WEBVTT' . "\n\n" . $contents;
// Replace commas with dots in timings.
$contents = preg_replace_callback(
'/^(?P<start>\d+:\d{2}:\d{2},\d+) --> (?P<end>\d+:\d{2}:\d{2},\d+)$/m',
function ($match) {
$start = str_replace(',', '.', $match['start']);
$end = str_replace(',', '.', $match['end']);
return sprintf('%s --> %s', $start, $end);
},
$contents
);
return $contents;
}
}