Rev 8 | Rev 11 | Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | RSS feed
#!/usr/bin/php
<?php
// ViaThinkSoft YouTube Downloader Util 2.2
// Revision: 2022-02-05
// Author: Daniel Marschall <www.daniel-marschall.de>
// Licensed under the terms of the Apache 2.0 License
//
// For syntax and other documentation, please read the file README.
// ------------------------------------------------------------------------------------------------
error_reporting(E_ALL | E_NOTICE | E_STRICT | E_DEPRECATED);
define('AUTO_API_KEY', '~/.yt_api_key');
define('AUTO_COOKIE_FILE', '~/.yt_cookies');
define('DOWNLOAD_SIMULATION_MODE', false);
define('DEFAULT_SEARCH_ORDER', 'relevance');
define('DEFAULT_SEARCH_MAXRESULTS', 10);
putenv("LANG=de_DE.UTF-8"); // required if video titles contain non-ASCII symbols
require_once __DIR__ . '/youtube_functions.inc.phps';
// Check if we are running in command line
if (PHP_SAPI !== 'cli') {
fwrite(STDERR, "Error: Can only run in CLI mode\n");
exit(2);
}
// Global vars
$listFilenameStack = array();
// Default values
$allow_creation_outputdir = false;
$type = 'v:';
$outputDir = '';
$alreadyDownloaded = '';
$failList = '';
$failTreshold = 3;
$rest_args = array();
$verbose = false;
$mp3id_transfer = true;
$apikey = '';
$resultcache = '';
$extra_args =
// '-k ' . // The additional "-k" option in the above makes youtube-dl keep downloaded videos.
'-i ' . // continue upon download errors
'-c '; // resume partially downloaded video files
$default_template = '%(title)s-%(id)s.%(ext)s';
$cookie_file = AUTO_COOKIE_FILE;
// Parse arguments
// We do not use getopt() at the moment, because the important functionality "optind" is only available in PHP 7.1, which is not yet distributed with most of the stable Linux distros
$init_extra_args = false;
$argv_bak = $_SERVER['argv'];
array_shift($argv_bak);
while (count($argv_bak) > 0) {
$arg = array_shift($argv_bak);
$arg2 = $arg . ' ' . (isset($argv_bak[0]) ? $argv_bak[0] : '');
$m = null;
if (preg_match('@^(/t|\-t|\-\-type)(\s+|=)(.*)$@s', $arg2, $m)) {
array_shift($argv_bak);
if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);
$type = $m[3];
} else if (preg_match('@^(/o|\-o|\-\-outputDir)(\s+|=)(.*)$@s', $arg2, $m)) {
array_shift($argv_bak);
if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);
$outputDir = $m[3];
} else if (preg_match('@^(/a|\-a|\-\-alreadyDownloaded)(\s+|=)(.*)$@s', $arg2, $m)) {
array_shift($argv_bak);
if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);
$alreadyDownloaded = $m[3];
} else if (preg_match('@^(/f|\-f|\-\-failList)(\s+|=)(.*)$@s', $arg2, $m)) {
array_shift($argv_bak);
if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);
$failList = $m[3];
} else if (preg_match('@^(/F|\-F|\-\-failTreshold)(\s+|=)(.*)$@s', $arg2, $m)) {
array_shift($argv_bak);
if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);
$failTreshold = $m[3];
} else if (preg_match('@^(/C|\-C|\-\-resultcache)(\s+|=)(.*)$@s', $arg2, $m)) {
array_shift($argv_bak);
if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);
$resultcache = $m[3];
} else if (preg_match('@^(/T|\-T|\-\-default-template)(\s+|=)(.*)$@s', $arg2, $m)) {
array_shift($argv_bak);
if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);
$default_template = $m[3];
} else if (preg_match('@^(/A|\-A|\-\-api-key)(\s+|=)(.*)$@s', $arg2, $m)) {
array_shift($argv_bak);
if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);
$apikey = file_exists($m[3]) ? trim(file_get_contents($m[3])) : $m[3];
} else if (preg_match('@^(\-\-cookies)(\s+|=)(.*)$@s', $arg2, $m)) {
array_shift($argv_bak);
if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);
$cookie_file = file_exists($m[3]) ? trim(file_get_contents($m[3])) : $m[3];
} else if (preg_match('@^(/X|\-X|\-\-extra-args)(\s+|=)(.*)$@s', $arg2, $m)) {
array_shift($argv_bak);
if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);
if ($init_extra_args) {
$extra_args .= ' ' . $m[3]; // user has multiple "-X" arguments. append.
} else {
$extra_args = $m[3]; // overwrite defaults
$init_extra_args = true;
}
} else if (preg_match('@^(/\?|/h|\-\?|\-h|\-\-help)$@s', $arg, $m)) {
if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);
help();
} else if (preg_match('@^(/V|\-V|\-\-version)$@s', $arg, $m)) {
if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);
version();
} else if (preg_match('@^(/v|\-v|\-\-verbose)$@s', $arg, $m)) {
if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);
$verbose = true;
} else if (preg_match('@^(/N|\-N|\-\-no-mp3-tagtransfer)$@s', $arg, $m)) {
if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);
$mp3id_transfer = false;
} else if (preg_match('@^(/O|\-O|\-\-create-outputdir)$@s', $arg, $m)) {
if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);
$allow_creation_outputdir = true;
} else if ($arg == '--') {
if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);
$rest_args = $argv_bak;
break;
} else {
$rest_args[] = $arg;
}
}
unset($arg);
unset($argv_bak);
unset($init_extra_args);
// Validity checks
if ((substr($type,0,2) != 'a:') && (substr($type,0,2) != 'v:')) syntax_error("Type must be either 'v:' or 'a:'. '$type' is not valid.");
if (count($rest_args) == 0) syntax_error("Please enter at least one desired video for downloading");
if ($failTreshold <= 0) syntax_error("Fail treshold has invalid value. Must be >0.");
$cookie_file = expand_tilde($cookie_file);
if (!file_exists($cookie_file)) $cookie_file = '';
// Try to download/update youtube-dl into local directory
$newest_version_md5 = get_latest_ytdl_md5sum();
if (!$newest_version_md5) {
fwrite(STDERR, "Failed to get MD5 sum of latest version of 'youtube-dl' from GitHub. Will not try to download/update 'youtube-dl' into local directory.\n");
} else {
if (!file_exists(__DIR__.'/youtube-dl') || ($newest_version_md5 != md5_file(__DIR__.'/youtube-dl'))) {
// Try to download/update the file in our directory. It should be the newest available, since YT often breaks downloader
if (file_exists(__DIR__.'/youtube-dl')) {
echo "Trying to update 'youtube-dl' in local directory...\n";
} else {
echo "Trying to download 'youtube-dl' into local directory...\n";
}
if (!@file_put_contents(__DIR__.'/youtube-dl', file_get_contents('https://yt-dl.org/downloads/latest/youtube-dl'))) {
fwrite(STDERR, "Failed to download 'youtube-dl' into local directory (file_get_contents).\n");
} else {
if (!@chmod(__DIR__.'/youtube-dl', 0544)) {
fwrite(STDERR, "Failed to download 'youtube-dl' into local directory (chmod 544).\n");
@unlink(__DIR__.'/youtube-dl'); // try to delete, otherwise we might try to execute a non-executable file
}
}
}
}
if (command_exists(__DIR__.'/youtube-dl')) {
echo "Will use 'youtube-dl' from local directory\n";
define('YTDL_EXE', __DIR__.'/youtube-dl');
} else {
// Download failed. Is at least a package installed?
if (command_exists('youtube-dl')) {
echo "Will use 'youtube-dl' from Linux package\n";
define('YTDL_EXE', 'youtube-dl');
} else {
fwrite(STDERR, "This script requires the tool/package 'youtube-dl'. Please install it first.\n");
exit(1);
}
}
// Now process the videos
yt_set_apikey_callback('_getApikey');
foreach ($rest_args as $resource) {
if ($verbose) echo "Handle: $resource\n";
if (strpos($resource, ':') === false) {
fwrite(STDERR, "Invalid resource '$resource' (you are missing the prefix, e.g. vurl: or vid:). Skipping.\n");
} else {
list($resourceType, $resourceValue) = explode(':', $resource, 2);
ytdwn_handle_resource($resourceType, $resourceValue);
}
}
// ------------------------------------------------------------------------------------------------
function ytdwn_handle_resource($resourceType, $resourceValue) {
if ($resourceType == 'vid') {
$video_id = parse_quoting($resourceValue);
ytdwn_video_id($video_id);
} else if ($resourceType == 'vurl') {
$video_url = parse_quoting($resourceValue);
$video_id = getVideoIDFromURL($video_url);
if (!$video_id) {
fwrite(STDERR, "$video_url is not a valid YouTube video URL. Skipping.\n");
} else {
ytdwn_video_id($video_id);
}
} else if ($resourceType == 'pid') {
$playlist_id = parse_quoting($resourceValue);
ytdwn_playlist_id($playlist_id);
} else if ($resourceType == 'purl') {
$playlist_url = parse_quoting($resourceValue);
$playlist_id = getPlaylistIDFromURL($playlist_url);
if (!$playlist_id) {
fwrite(STDERR, "$playlist_url is not a valid YouTube playlist URL. Skipping\n");
} else {
ytdwn_playlist_id($playlist_id);
}
} else if ($resourceType == 'cid') {
$channel_id = parse_quoting($resourceValue);
$m = null;
if (preg_match('@\[search=(.+)\]@ismU', $channel_id, $m)) {
$search = $m[1];
$channel_id = preg_replace('@\[search=(.+)\]@ismU', '', $channel_id);
} else {
$search = ''; // default
}
$search = parse_quoting($search);
ytdwn_channel_id($channel_id, $search);
} else if ($resourceType == 'cname') {
$channel_name = parse_quoting($resourceValue);
$m = null;
if (preg_match('@\[search=(.+)\]@ismU', $channel_name, $m)) {
$search = $m[1];
$channel_name = preg_replace('@\[search=(.+)\]@ismU', '', $channel_name);
} else {
$search = ''; // default
}
$search = parse_quoting($search);
$channel_name = parse_quoting($channel_name);
$channel_id = yt_get_channel_id($channel_name);
if (!$channel_id) {
fwrite(STDERR, "URL $channel_name is a valid YouTube channel or username. Skipping.\n");
} else {
ytdwn_channel_id($channel_id, $search);
}
} else if ($resourceType == 'curl') {
$channel_url = parse_quoting($resourceValue);
$m = null;
if (preg_match('@\[search=(.+)\]@ismU', $channel_url, $m)) {
$search = $m[1];
$channel_url = preg_replace('@\[search=(.+)\]@ismU', '', $channel_url);
} else {
$search = ''; // default
}
$search = parse_quoting($search);
$channel_url = parse_quoting($channel_url);
$channel_id = curl_to_cid($channel_url);
if (!$channel_id) {
fwrite(STDERR, "URL $channel_url is a valid YouTube channel or username URL. Skipping\n");
} else {
ytdwn_channel_id($channel_id, $search);
}
} else if ($resourceType == 'search') {
$searchterm = parse_quoting($resourceValue);
$order = '';
$m = null;
if (preg_match('@\[order=(.+)\]@ismU', $searchterm, $m)) {
$order = $m[1];
$searchterm = preg_replace('@\[order=(.+)\]@ismU', '', $searchterm);
} else {
$order = DEFAULT_SEARCH_ORDER; // default
}
$order = parse_quoting($order);
$maxresults = '';
if (preg_match('@\[maxresults=(.+)\]@ismU', $searchterm, $m)) {
$maxresults = $m[1];
$searchterm = preg_replace('@\[maxresults=(.+)\]@ismU', '', $searchterm);
} else {
$maxresults = DEFAULT_SEARCH_MAXRESULTS; // default
}
$maxresults = parse_quoting($maxresults);
$searchterm = parse_quoting($searchterm);
ytdwn_search($searchterm, $order, $maxresults);
} else if ($resourceType == 'list') {
$list_files = glob(parse_quoting($resourceValue)); // in case the user entered a wildcard, e.g. *.list
foreach ($list_files as $list_file) {
if (!file_exists($list_file)) {
fwrite(STDERR, "List file $list_file does not exist. Skipping\n");
} else {
ytdwn_list_file($list_file);
}
}
} else {
fwrite(STDERR, "Resource type '$resourceType' is not valid. Skipping $resourceType:$resourceValue.\n");
}
}
function ytdwn_list_file($list_file) {
global $listFilenameStack, $verbose;
if ($verbose) echo "Processing list file '$list_file' ...\n";
$listFilenameStack[] = $list_file;
$lines = file($list_file);
foreach ($lines as $line) {
$line = trim($line);
if ($line == '') continue;
if ($line[0] == '#') continue;
if (strpos($line, ':') === false) {
fwrite(STDERR, "Invalid resource '$line' (you are missing the prefix, e.g. vurl: or vid:). Skipping.\n");
} else {
list($resourceType, $resourceValue) = explode(':',$line,2);
ytdwn_handle_resource($resourceType, $resourceValue);
}
}
array_pop($listFilenameStack);
}
function ytdwn_channel_id($channel_id, $search='') {
global $type;
global $verbose;
if ($verbose) echo "Processing channel ID '$channel_id' ...\n";
// List the videos of the channel
$cont = !empty(_getResultcache()) && file_exists(_getResultcache()) ? file_get_contents(_getResultcache()) : '';
$out = json_decode($cont, true);
if ($out == NULL) $out = array();
if (!empty(_getResultcache())) {
$stats = yt_get_channel_stats($channel_id);
$videocount = $stats['videoCount'];
$key = (!empty($search)) ? 'cid:'.$channel_id.'/'.$search : 'cid:'.$channel_id;
if (!isset($out[$key])) $out[$key] = array();
$videocount_old = isset($out[$key]['count']) ? $out[$key]['count'] : -1;
} else {
$videocount = -1;
$videocount_old = -2;
$key = '';
}
if ($videocount_old != $videocount) { // Attention: This might not work if videos are deleted and added (= the count stays the same)
if ($verbose && !empty(_getResultcache())) echo "Video count changed from $videocount_old to $videocount\n";
$out[$key]['count'] = $videocount;
if (!empty($search)) {
$out[$key]['results'] = yt_channel_items($channel_id, $search);
} else {
$out[$key]['results'] = yt_channel_items($channel_id);
}
} else {
if ($verbose) echo "Video count for channel is still $videocount, keep ".count($out[$key]['results'])." results.\n";
}
// Save the cache
try {
if (!empty(_getResultcache())) file_put_contents(_getResultcache(), json_encode($out));
} catch(Exception $e) {
fwrite(STDERR, "Cannot write result cache\n");
}
// Now download
if (!$out[$key]['results']) {
fwrite(STDERR, "Cannot get result for channel with ID '$channel_id'\n");
return;
}
foreach ($out[$key]['results'] as list($id, $title)) {
if ($verbose) echo "Downloading '$title' as ".hf_type($type)." ...\n";
ytdwn_video_id($id);
}
}
function ytdwn_playlist_id($playlist_id) {
global $type;
global $verbose;
if ($verbose) echo "Processing playlist ID '$playlist_id' ...\n";
// List the videos of the playlist
$cont = !empty(_getResultcache()) && file_exists(_getResultcache()) ? file_get_contents(_getResultcache()) : '';
$out = json_decode($cont, true);
if ($out == NULL) $out = array();
if (!empty(_getResultcache())) {
$stats = yt_get_playlist_stats($playlist_id);
$videocount = $stats['itemCount'];
$key = 'pid:'.$playlist_id;
if (!isset($out[$key])) $out[$key] = array();
$videocount_old = isset($out[$key]['count']) ? $out[$key]['count'] : -1;
} else {
$videocount = -1;
$videocount_old = -2;
$key = '';
}
if ($videocount_old != $videocount) { // Attention: This might not work if videos are deleted and added (= the count stays the same)
if ($verbose && !empty(_getResultcache())) echo "Video count changed from $videocount_old to $videocount\n";
$out[$key]['count'] = $videocount;
$out[$key]['results'] = yt_playlist_items($playlist_id);
} else {
if ($verbose) echo "Video count for playlist is still $videocount, keep ".count($out[$key]['results'])." results.\n";
}
// Save the cache
try {
if (!empty(_getResultcache())) file_put_contents(_getResultcache(), json_encode($out));
} catch(Exception $e) {
fwrite(STDERR, "Cannot write result cache\n");
}
// Now download
if (!$out[$key]['results']) {
fwrite(STDERR, "Cannot get result for playlist with ID '$playlist_id'\n");
return;
}
foreach ($out[$key]['results'] as list($id, $title)) {
if ($verbose) echo "Downloading '$title' as ".hf_type($type)." ...\n";
ytdwn_video_id($id);
}
}
function ytdwn_search($search, $order='', $maxresults=-1) {
global $type;
global $verbose;
if ($verbose) echo "Searching for '$search' ...\n";
// Perform the search and list the videos
$results = yt_search_items($search, $order, $maxresults);
// Now download
if (!$results) {
fwrite(STDERR, "Cannot get data for search '$search'\n");
return;
}
foreach ($results as list($id, $title)) {
if ($verbose) echo "Downloading '$title' as ".hf_type($type)." ...\n";
ytdwn_video_id($id);
}
}
function ytdwn_video_id($video_id) {
global $type;
global $verbose;
global $mp3id_transfer;
global $extra_args;
global $default_template;
global $failTreshold;
global $cookie_file;
if (DOWNLOAD_SIMULATION_MODE) {
echo "SIMULATE download of video id $video_id as ".hf_type($type)." to "._getOutputDir()."\n";
return;
}
if (!empty(_getAlreadyDownloaded()) && in_alreadydownloaded_file($type, $video_id)) {
if ($verbose) echo "Video $video_id has already been downloaded. Skip.\n";
return true;
}
if (!empty(_getFailList()) && (ytdwn_fail_counter($type, $video_id) >= $failTreshold)) {
if ($verbose) echo "Video $video_id has failed too often. Skip.\n";
return true;
}
$out = '';
$code = -1;
$outputTemplate = rtrim(_getOutputDir(), '/').'/'.$default_template;
if (substr($type,0,2) == 'v:') {
$format = substr($type,2);
if (!empty($format)) {
exec(YTDL_EXE.' -o '.escapeshellarg($outputTemplate).' '.$extra_args.(empty($cookie_file) ? '' : ' --cookies '.$cookie_file).' '.escapeshellarg(vid_to_vurl($video_id)).' --format '.escapeshellarg($format), $out, $code);
} else {
exec(YTDL_EXE.' -o '.escapeshellarg($outputTemplate).' '.$extra_args.(empty($cookie_file) ? '' : ' --cookies '.$cookie_file).' '.escapeshellarg(vid_to_vurl($video_id)), $out, $code);
}
} else if (substr($type,0,2) == 'a:') {
$format = substr($type,2);
if (!empty($format)) {
exec(YTDL_EXE.' -o '.escapeshellarg($outputTemplate).' '.$extra_args.(empty($cookie_file) ? '' : ' --cookies '.$cookie_file).' '.escapeshellarg(vid_to_vurl($video_id)).' --extract-audio --audio-format '.escapeshellarg($format), $out, $code);
} else {
exec(YTDL_EXE.' -o '.escapeshellarg($outputTemplate).' '.$extra_args.(empty($cookie_file) ? '' : ' --cookies '.$cookie_file).' '.escapeshellarg(vid_to_vurl($video_id)).' --extract-audio', $out, $code);
}
if (($mp3id_transfer) && ($format == 'mp3')) mp3_transfer_vid_to_id();
} else assert(false);
if ($code == 0) {
if ($verbose) fwrite(STDOUT, "Successfully downloaded video ID $video_id as ".hf_type($type)."\n");
if (!empty(_getAlreadyDownloaded())) {
try {
addto_alreadydownloaded_file($type, $video_id);
} catch(Exception $e) {
fwrite(STDERR, "Cannot add to already downloaded file\n");
}
}
} else {
fwrite(STDERR, "Error downloading $video_id! (Code $code)\n");
if (!empty(_getFailList())) {
try {
ytdwn_register_fail($type, $video_id, $code);
} catch(Exception $e) {
fwrite(STDERR, "Cannot register fail\n");
}
}
return false;
}
return true;
}
function vid_to_vurl($video_id) {
return "https://www.youtube.com/watch?v=$video_id";
}
function EndsWith($Haystack, $Needle){
return strrpos($Haystack, $Needle) === strlen($Haystack)-strlen($Needle);
}
function mp3_transfer_vid_to_id() {
global $verbose;
global $default_template;
if (!command_exists('id3v2')) {
if ($verbose) echo "Note: Tool id3v2 is not installed. Will not transfer the YouTube ID into the MP3 ID Tag\n";
return false;
}
if (!EndsWith($default_template, '-%(id)s.%(ext)s')) {
if ($verbose) echo "Note: Cannot transfer video tag to MP3 because default template does not end with '-%(id)s.%(ext)s'.\n";
return false;
}
$allok = true;
$files = glob(rtrim(_getOutputDir(), '/').'/*-???????????.mp3');
foreach ($files as $filename) {
$m = null;
if (!preg_match('@-([a-zA-Z0-9\-_]{11})\.mp3$@ismU', $filename, $m)) continue;
$yt_id = $m[1];
if (!yt_check_video_id($yt_id)) continue; // just to be sure
$orig_ts = filemtime($filename);
$ec = -1;
system('id3v2 -c '.escapeshellarg($yt_id).' '.escapeshellarg($filename), $ec);
touch($filename, $orig_ts);
if ($ec != 0) {
fwrite(STDERR, "Cannot set ID tag for file $filename\n");
$allok = false;
continue;
}
$target_filename = str_replace("-$yt_id.mp3", '.mp3', $filename);
if (!intelligent_rename($filename, $target_filename)) {
fwrite(STDERR, "Cannot move file $filename to $target_filename\n");
$allok = false;
continue;
}
}
return $allok;
}
function curl_to_cid($channel_url) {
$m = null;
if (preg_match("@https{0,1}://(www\\.|)youtube\\.com/user/(.*)(/|&|\\?)@ismU", $channel_url.'&', $m)) {
$username = $m[2];
$channel_id = yt_get_channel_id($username);
return $channel_id;
} else if (preg_match("@https{0,1}://(www\\.|)youtube\\.com/(channel|c)/(.*)(/|&|\\?)@ismU", $channel_url.'&', $m)) {
$channel_id = $m[3];
return $channel_id;
} else {
return false;
}
}
function in_alreadydownloaded_file($type, $video_id) {
$lines = file(_getAlreadyDownloaded());
foreach ($lines as $line) {
if (trim($line) == rtrim($type,':').':'.$video_id) {
return true;
}
}
return false;
}
function addto_alreadydownloaded_file($type, $video_id) {
file_put_contents(_getAlreadyDownloaded(), rtrim($type,':').':'.$video_id."\n", FILE_APPEND);
}
function syntax_error($msg) {
fwrite(STDERR, "Syntax error: ".trim($msg)."\n");
fwrite(STDERR, "Please use argument '--help' to show the syntax rules.\n");
exit(2);
}
function _help() {
global $argv;
$out = '';
$own = file_get_contents($argv[0]);
$help = explode('// ----', $own, 2)[0];
$m = null;
$help = preg_match_all('@^//(.*)$@mU', $help, $m);
foreach ($m[1] as $line) {
$out .= substr($line,1)."\n";
}
return $out;
}
function help() {
echo _help();
exit(0);
}
function version() {
echo explode("\n\n", _help(), 2)[0]."\n";
exit(0);
}
function command_exists($command) {
// https://stackoverflow.com/questions/592620/check-if-a-program-exists-from-a-bash-script
$ec = -1;
system('command -v '.escapeshellarg($command).' > /dev/null', $ec);
return ($ec == 0);
}
function hf_type($type) {
if (strpos($type, ':') === false) return $type; // invalid type (missing ':')
list($av, $format) = explode(':', $type);
if ($av == 'a') $av = 'audio';
else if ($av == 'v') $av = 'video';
else return $type; // invalid type
return (!empty($format)) ? $format.'-'.$av : $av;
}
function expand_tilde($path) {
// Source: http://jonathonhill.net/2013-09-03/tilde-expansion-in-php/
if (function_exists('posix_getuid') && strpos($path, '~') !== false) {
$info = posix_getpwuid(posix_getuid());
$path = str_replace('~', $info['dir'], $path);
}
return $path;
}
function _getLastListname() {
global $listFilenameStack;
$listname = ''; // default
if (count($listFilenameStack) > 0) {
$listname = $listFilenameStack[count($listFilenameStack)-1];
$listname = pathinfo($listname, PATHINFO_FILENAME); // remove file extension, e.g. ".list"
}
return $listname;
}
function _getApiKey() {
global $apikey;
$out = $apikey;
if (empty($out)) {
$auto_api_key = AUTO_API_KEY;
$auto_api_key = expand_tilde($auto_api_key);
$auto_api_key = str_replace('[listname]', _getLastListname(), $auto_api_key);
if (file_exists($auto_api_key)) {
$out = trim(file_get_contents($auto_api_key));
} else {
syntax_error("Please specify a YouTube API key with argument '-A'.");
}
} else {
$out = str_replace('[listname]', _getLastListname(), $out);
$out = expand_tilde($out);
if (file_exists($out)) {
$out = trim(file_get_contents($out));
} else {
// Assume, $out is a key, not a file
}
}
if (!yt_check_apikey_syntax($out)) syntax_error("'$out' is not a valid API key, not an existing file containing an API key.\n");
return $out;
}
function _getResultCache() {
global $resultcache;
if (empty($resultcache)) return '';
$out = expand_tilde($resultcache);
$out = str_replace('[listname]', _getLastListname(), $out);
if (!file_exists($out)) {
@touch($out);
if (!file_exists($out)) {
fwrite(STDERR, "File '$out' cannot be created. Disable feature.\n");
return '';
}
}
return $out;
}
function _getAlreadyDownloaded() {
global $alreadyDownloaded;
if (empty($alreadyDownloaded)) return '';
$out = expand_tilde($alreadyDownloaded);
$out = str_replace('[listname]', _getLastListname(), $out);
if (!file_exists($out)) {
@touch($out);
if (!file_exists($out)) {
fwrite(STDERR, "File '$out' cannot be created. Disable feature.\n");
return '';
}
}
return $out;
}
function _getFailList() {
global $failList;
if (empty($failList)) return '';
$out = expand_tilde($failList);
$out = str_replace('[listname]', _getLastListname(), $out);
if (!file_exists($out)) {
@touch($out);
if (!file_exists($out)) {
fwrite(STDERR, "File '$out' cannot be created. Disable feature.\n");
return '';
}
}
return $out;
}
function _getOutputDir() {
global $outputDir, $allow_creation_outputdir;
if (empty($outputDir)) return '.';
$out = expand_tilde($outputDir);
$out = str_replace('[listname]', _getLastListname(), $out);
if ($allow_creation_outputdir) {
if (!is_dir($out)) {
mkdir($out, true);
if (!is_dir($out)) {
fwrite(STDERR, "Output directory '$out' does not exist.\n");
exit(1);
}
}
} else {
if (!is_dir($out)) {
fwrite(STDERR, "Output directory '$out' does not exist.\n");
exit(1);
}
}
return $out;
}
function parse_quoting($str) {
if ((substr($str,0,1) == '"') && (substr($str,-1,1) == '"')) {
$str = substr($str,1,strlen($str)-2);
$escape = false;
$out = '';
for ($i=0; $i<strlen($str); $i++) {
$char = $str[$i];
if ($char == '\\') {
if ($escape) {
$out .= $char;
$escape = false;
} else {
$escape = true;
}
} else {
$out .= $char;
}
}
$str = $out;
}
return $str;
}
function ytdwn_register_fail($type, $video_id, $code) {
// Note: Error code $code ist currently not used
$file = _getFailList();
$cont = file_get_contents($file);
$m = null;
if (preg_match("@Video ID ".preg_quote($video_id,'@')." failed (\d+) time\(s\) with type ".preg_quote($type,'@')."@ismU", $cont, $m)) {
$cont = preg_replace("@Video ID ".preg_quote($video_id,'@')." failed (\d+) time\(s\) with type ".preg_quote($type,'@')."@ismU",
"Video ID $video_id failed ".($m[1]+1)." time(s) with type $type", $cont);
file_put_contents($file, $cont);
} else {
file_put_contents($file, "Video ID $video_id failed 1 time(s) with type $type\n", FILE_APPEND);
}
}
function ytdwn_fail_counter($type, $video_id) {
$file = _getFailList();
$cont = file_get_contents($file);
$m = null;
if (preg_match("@Video ID ".preg_quote($video_id,'@')." failed (\d+) time\(s\) with type ".preg_quote($type,'@')."@ismU", $cont, $m)) {
return $m[1];
} else {
return 0;
}
}
function intelligent_rename($src, $dest) {
$pos = strrpos($dest, '.');
$ext = substr($dest, $pos);
$namewoext = substr($dest, 0, $pos);
$failcnt = 1;
$dest_neu = $dest;
while (file_exists($dest_neu)) {
$failcnt++;
$dest_neu = "$namewoext ($failcnt)$ext";
}
return rename($src, $dest_neu);
}
function get_latest_ytdl_md5sum() {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://yt-dl.org/downloads/latest/MD5SUMS');
#curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$cont = curl_exec($ch);
$m = null;
if (preg_match('@^(.+) youtube\-dl$@ismU', $cont, $m)) {
return $m[1];
} else {
return false;
}
}