From 725961a24f0d00cdefcdb0d9800d35d4d1ed9154 Mon Sep 17 00:00:00 2001
From: Ole Tange <ole@tange.dk>
Date: Wed, 21 Jun 2017 20:28:37 +0200
Subject: [PATCH] ytv: Initial version.

---
 Makefile |   6 ++--
 ytv/ytv  | 105 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 108 insertions(+), 3 deletions(-)
 create mode 100755 ytv/ytv

diff --git a/Makefile b/Makefile
index 56d870d..32bd91a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,9 @@
 CMD = blink bsearch em encdir field forever G gitnext goodpasswd	\
-histogram neno off pdfman puniq ramusage rand rclean rn rrm		\
+histogram mtrr neno off pdfman puniq ramusage rand rclean rn rrm	\
 sound-reload stdout T timestamp tracefile upsidedown			\
-w4it-for-port-open wifi-reload wssh
+w4it-for-port-open wifi-reload wssh ytv
 
-all: blink/blink.1 bsearch/bsearch.1 encdir/encdir.1 G/G.1 gitnext/gitnext.1 goodpasswd/goodpasswd.1 histogram/histogram.1 neno/neno.1 off/off.1 pdfman/pdfman.1 puniq/puniq.1 rand/rand.1 rn/rn.1 rrm/rrm.1 sound-reload/sound-reload.1 stdout/stdout.1 timestamp/timestamp.1 tracefile/tracefile.1 T/T.1 upsidedown/upsidedown.1 wifi-reload/wifi-reload.1 wssh/wssh.1
+all: blink/blink.1 bsearch/bsearch.1 encdir/encdir.1 G/G.1 gitnext/gitnext.1 goodpasswd/goodpasswd.1 histogram/histogram.1 neno/neno.1 off/off.1 pdfman/pdfman.1 puniq/puniq.1 rand/rand.1 rn/rn.1 rrm/rrm.1 sound-reload/sound-reload.1 stdout/stdout.1 timestamp/timestamp.1 tracefile/tracefile.1 T/T.1 upsidedown/upsidedown.1 wifi-reload/wifi-reload.1 wssh/wssh.1 ytv/ytv.1
 
 %.1: %
 	pod2man $< > $@
diff --git a/ytv/ytv b/ytv/ytv
new file mode 100755
index 0000000..c310fd4
--- /dev/null
+++ b/ytv/ytv
@@ -0,0 +1,105 @@
+#!/usr/bin/perl
+
+=pod
+
+=head1 NAME
+
+ytv - Start downloading youtube video and play it immediately
+
+
+=head1 SYNOPSIS
+
+B<ytv> I<youtube-url>
+
+
+=head1 DESCRIPTION
+
+B<ytv> starts B<youtube-dl> in the background. When the partial
+downloaded file exists, it is played by B<vlc>.
+
+=head1 AUTHOR
+
+Copyright (C) 2017 Ole Tange,
+http://ole.tange.dk and Free Software Foundation, Inc.
+
+
+=head1 LICENSE
+
+Copyright (C) 2012 Free Software Foundation, Inc.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+at your option any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+=head1 DEPENDENCIES
+
+B<ytv> uses B<youtube-dl> and B<vlc>.
+
+
+=head1 SEE ALSO
+
+B<ytv>, B<vlc>
+
+
+=cut
+
+`mkdir -p ~/tmp/Videos`;
+chdir($ENV{'HOME'}."/tmp/Videos");
+for my $url (@ARGV) {
+    if(not fork()) {
+	# Download in the background
+	system(qw(youtube-dl -f best),$url);
+	exit;
+    }
+    # https://www.youtube.com/watch?v=ID
+    if($url =~ m{https://www.youtube.com/watch\?v=([^&]+)}) {
+	# Get the ID from the url
+	push @id,$1;
+	$id{$1}++;
+    } else {
+	print STDERR "$url not matched\n";
+    }
+}
+
+sub match_arr_regexp {
+    # Match any of @regexp
+    my ($regexp_arr,$content_arr) = @_;
+    # my $m;
+    # return map { $m = $_; grep { /$m/ } @$content_arr } @$regexp_arr;
+    my $regexp = join'|',map { "($_)" } @$regexp_arr;
+    return grep { /$regexp/ } @$content_arr;       
+}
+
+my (@ls,@files);
+
+do {
+    # Sleep until there are matching files
+    sleep(1);
+    @ls = <*>;
+    @files = match_arr_regexp(\@id,\@ls);
+} until @files;
+
+while(@files) {
+    # Run VLC on the matching files
+    system("vlc",@files);
+    # Remove regexps from @id
+    for my $id (@id) {
+	if(grep { /$id/ } @ls) {
+	    $id{$id} = 0;
+	}
+    }
+    @id = grep { $id{$_} } @id;
+    # See if there are new matches
+    @ls = <*>;
+    @files = match_arr_regexp(\@id,\@ls);
+}