<30> through <37> tags

[..]
private function translateAnsiColor(param1:String) : String
      {
         var param1:String = this.replaceAnsiColor(param1,"30","#000000");
         param1 = this.replaceAnsiColor(param1,"31","#FF0000");
         param1 = this.replaceAnsiColor(param1,"32","#00FF00");
         param1 = this.replaceAnsiColor(param1,"33","#FFFF00");
         param1 = this.replaceAnsiColor(param1,"34","#0000FF");
         param1 = this.replaceAnsiColor(param1,"35","#FF00FF");
         param1 = this.replaceAnsiColor(param1,"36","#00FFFF");
         param1 = this.replaceAnsiColor(param1,"37","#FFFFFF");
         return param1;
      }
      
      private function replaceAnsiColor(param1:String, param2:String, param3:String) : String
      {
         var param1:String = param1.replace(new RegExp("<" + param2 + ">","g"),"");
         param1 = param1.replace(new RegExp("<!--" + param2 + "-->","g"),"");
         return param1;
      }
[..]

186
00:19:29.280 --> 00:19:37.040
–Pappa, i går såg jag en häst.
<33>–Jättekul. Klappade du den?</33>

186
00:19:29.280 --> 00:19:37.040
–Pappa, i går såg jag en häst.
<font color="#FFFF00">–Jättekul. Klappade du den?</font>

WebVTT-tags

248
00:28:08.480 --> 00:28:11.880 A:middle L:50%
SVT Programtextning:
lisbet olofsdotter

{\an7} {\an8} {\an9}
{\an4} {\an5} {\an6}
{\an1} {\an2} {\an3}

PHP Script

<?php

error_reporting(-1);
ini_set("display_errors", 1);

//Does the actual converting
function convert($sub){
	$colours = array(
		"30" => "000000",
		"31" => "FF0000",
		"32" => "00FF00",
		"33" => "FFFF00",
		"34" => "0000FF",
		"35" => "FF00FF",
		"36" => "00FFFF",
		"37" => "FFFFFF",
	);

	//Replace all <3x> tags with the correct colours, one by one
	foreach ($colours as $num => $colour){
		$sub = preg_replace("%<$num>%", "<font color=\"#$colour\">", $sub);
		$sub = preg_replace("%</$num>%", "</font>", $sub);
	}

	//Strips WebVTT-tags if requested (remove everything on the line after "00:00:00.000 --> 00:00:00.000")
	if (isset($_POST['strip_vtt'])){
		$sub = preg_replace("%(^[0-9-:.]+[ \->]+[0-9-:.]+)( .+)$%m", "\\1", $sub);
	}

	return $sub;
}

//Zips files to send to user
function addtozip($filename, $contents){
	global $outputfile;
	$zip = new ZipArchive();
	$zip->open($outputfile, ZipArchive::CREATE);
	$zip->addFromString($filename, $contents);
	$zip->close();
}

//Scan through the folder containing the zips and delete all older than an hour
function cleanup(){
	$svtdownload_contents = scandir("./svtdownload/");
	foreach ($svtdownload_contents as $i){
		$svtdownload_file = "./svtdownload/" . $i;
		if (is_file($svtdownload_file)){
			if(filemtime($svtdownload_file) < time()-3600){
				unlink($svtdownload_file);
			}
		}
	}
}

//If user has submitted the form with data, process it
if (isset($_POST['upload_sub']) && (!empty($_POST['sub_text']) || $_FILES['sub_file']['error'] == 0)){
	//If a file was uploaded...
	if ($_FILES['sub_file']['error'] == 0){
		cleanup();
		//Set the path for the zip that we'll create later
		$outputfile = "./svtdownload/" . str_replace(".", NULL, $_SERVER['REMOTE_ADDR']) . time() . ".zip";
		//Get the filetype of the uploaded file
		$finfo = finfo_open(FILEINFO_MIME_TYPE);
		$filetype = finfo_file($finfo, $_FILES['sub_file']['tmp_name']);
		finfo_close($finfo);
		//If user uploaded a text file (srt). Some subs are detected as x-pascal for some reason.
		if ($filetype === "text/plain" || $filetype === "text/x-pascal"){
			//Get the content, convert it, and zip it
			if($uploaded_sub = file_get_contents($_FILES['sub_file']['tmp_name'])){
				$finished_sub = convert($uploaded_sub);
				addtozip($_FILES['sub_file']['name'], $finished_sub);
			}
		}
		//If user uploaded a zip file
		else if ($filetype === "application/zip"){
			//Open the uploaded zip
			$uploaded_zip = new ZipArchive();
			$uploaded_zip->open($_FILES['sub_file']['tmp_name']);
			//Loop through every file in the zip
			for($i = 0; $i < $uploaded_zip->numFiles; $i++){
				//Get info about the current file
				$stat = $uploaded_zip->statIndex($i);
				//Get the filetype for the current file, process it if text
				$finfo = finfo_open(FILEINFO_MIME_TYPE);
				$filetype = finfo_buffer($finfo, $uploaded_zip->getFromIndex($i));
				finfo_close($finfo);
				//Get the content, convert it, and zip it
				if ($filetype === "text/plain" || $filetype === "text/x-pascal"){
					$finished_sub = convert($uploaded_zip->getFromIndex($i));
					addtozip($stat['name'], $finished_sub);
				}
			}
		}
		else{
			$error = "<br /><span class=\"red_color\">Wrong filetype. Please upload text-subtitle or zip.</span><br />";
		}
		//Redirect user to zip, if exists
		if(file_exists($outputfile)){
			header("Location: $outputfile");
		}
		else if (!isset($error)){
			$error = "<br /><span class=\"red_color\">Something went wrong :(</span><br />";	
		}
	}
	//If user did not upload a file but filled in the text-field
	else if (!empty($_POST['sub_text'])){
		cleanup();
		$textbox_echo = null;
		$counter = 1;
		//Set the path for the zip that we'll create later
		$outputfile = "./svtdownload/" . str_replace(".", NULL, $_SERVER['REMOTE_ADDR']) . time() . ".zip";
		//Loop through each line and check if it's an url
		$all_lines = explode("\n", trim($_POST['sub_text']));
		foreach ($all_lines as $i){
			//Remove \n from the string
			$i = trim($i);
			//New url discovered 2019 to akamaized, keeping old as alternative if it's still used.
			$url_regex = "%^(https?://svt-vod-5m\.akamaized\.net/|https?://media\.svt\.se/download/).*\.wsrt$%";
			//Check if it links to a wsrt on media.svt.se/download/
			if (preg_match($url_regex, $i) == true){
				//Set variable to skip converting from text-input later
				$inputbyurl = true;
				//Fetch the sub, convert it and zip it
				if($sub = file_get_contents($i)){
					$finished_sub = convert($sub);
					addtozip(str_pad($counter, 2, "0", STR_PAD_LEFT) . ". " . pathinfo($i, PATHINFO_BASENAME), $finished_sub);
					$counter++;
				}
			}
		}
		//If no links were found, suppose input is a sub and convert it
		if(!isset($inputbyurl)){
			$finished_sub = convert($_POST['sub_text']);
			$textbox_echo = htmlentities($finished_sub);
		}
		else{
			//Redirect user to zip, if exists
			if(file_exists($outputfile)){
				header("Location: $outputfile");
			}
			else{
				$error = "<br /><span class=\"red_color\">Something went wrong :(</span><br />";	
			}
		}
		
		$output = "\n\t<div class=\"sub_container\">
		Results:<br />
		<textarea class=\"sub_textbox\">" . $textbox_echo . "\t\t</textarea>
	</div>";
	}
}

echo "<!DOCTYPE html>
<html>
<head>
	<meta charset=\"utf-8\" />
	<title>SVT Subs Converter</title>
	<style>
		.sub_textbox {
			width:500px;
			min-width:200px;
			height: 200px;
			min-height: 100px;
		}
		.sub_container{
			background-color: #F8F8F8;
			padding: 10px;
		}
		.red_color{
			color: red;
		}
	</style>
</head>
<body>
	<div class=\"sub_container\">
		" . htmlentities("This simple tool will replace SVT:s <30> to <37> tags with their respective colours. Source code and technical details ") . "<a href='/view/27/'>here</a>.<br />\n\t\t";
		if (isset($error)){
			echo $error;
		}
		echo "<form method=\"post\" enctype=\"multipart/form-data\">
			<br />
			Upload file, either single file or zipped:
			<br />
			<input type=\"file\" name=\"sub_file\" />
			<br />
			<br />
			...or input subtitle as text, or paste 1 url per line:
			<br />
			<textarea class=\"sub_textbox\" name=\"sub_text\">" . @$_POST['sub_text'] . "</textarea>
			<br />
			<br />
			<input type=\"checkbox\" name=\"strip_vtt\" id=\"strip_vtt\" />
			<label for=\"strip_vtt\">Remove WebVTT specific tags (most players just seem to ignore these, doesn't do any harm to keep them)</label>
			<br />
			<br />
			<input type=\"submit\" name=\"upload_sub\" value=\"Submit\" />
			<button type=\"reset\" value=\"Reset\">Reset</button>
		</form>
	</div>";

	if (isset($output)){
		echo $output;
	}

echo "\n</body>
</html>"

?>