From aac67bc57639bc1d0b2f1383f23209c18ebe3e7f Mon Sep 17 00:00:00 2001
From: Enam Mijbah Noor <enammijbahnoor@gmail.com>
Date: Tue, 1 Apr 2014 05:23:55 +0600
Subject: [PATCH] Added new --playlist-items option

---
 youtube_dl/YoutubeDL.py | 30 +++++++++++++++++++++++++++---
 youtube_dl/__init__.py  |  6 ++++++
 2 files changed, 33 insertions(+), 3 deletions(-)

diff --git a/youtube_dl/YoutubeDL.py b/youtube_dl/YoutubeDL.py
index 6646fe348..41cb439fa 100644
--- a/youtube_dl/YoutubeDL.py
+++ b/youtube_dl/YoutubeDL.py
@@ -113,6 +113,7 @@ class YoutubeDL(object):
     nooverwrites:      Prevent overwriting files.
     playliststart:     Playlist item to start at.
     playlistend:       Playlist item to end at.
+    playlistitems:     Specific items of playlist to download.
     matchtitle:        Download only matching titles.
     rejecttitle:       Reject downloads for matching titles.
     logger:            Log messages to a logging.Logger instance.
@@ -603,17 +604,40 @@ class YoutubeDL(object):
             if playlistend == -1:
                 playlistend = None
 
+            playlistitems = self.params.get('playlistitems', None)
+            if playlistitems:
+                if bool(re.compile(r'[^0-9,-]').search(playlistitems)):
+                    raise ValueError('Invalid charecters in --playlist-items argument.')
+                _playlistitems = playlistitems.split(',')
+                playlistitems = []
+                for item in _playlistitems:
+                    if '-' in item:
+                        start, end = item.split('-')
+                        playlistitems.extend(list(range(int(start), int(end) + 1)))
+                    else:
+                        playlistitems.append(int(item))
+
             if isinstance(ie_result['entries'], list):
                 n_all_entries = len(ie_result['entries'])
-                entries = ie_result['entries'][playliststart:playlistend]
+                if playlistitems:
+                    entries = [e for i, e in enumerate(ie_result['entries'], 1) if i in playlistitems]
+                else:
+                    entries = ie_result['entries'][playliststart:playlistend]
                 n_entries = len(entries)
                 self.to_screen(
                     "[%s] playlist %s: Collected %d video ids (downloading %d of them)" %
                     (ie_result['extractor'], playlist, n_all_entries, n_entries))
             else:
                 assert isinstance(ie_result['entries'], PagedList)
-                entries = ie_result['entries'].getslice(
-                    playliststart, playlistend)
+                if playlistitems:
+                    entries = []
+                    for item in playlistitems:
+                        entries.append(ie_result.getslice(
+                            item, item + 1
+                        ))
+                else:
+                    entries = ie_result['entries'].getslice(
+                        playliststart, playlistend)
                 n_entries = len(entries)
                 self.to_screen(
                     "[%s] playlist %s: Downloading %d videos" %
diff --git a/youtube_dl/__init__.py b/youtube_dl/__init__.py
index 7c135db32..f1432891a 100644
--- a/youtube_dl/__init__.py
+++ b/youtube_dl/__init__.py
@@ -52,6 +52,7 @@ __authors__  = (
     'Juan C. Olivares',
     'Mattias Harrysson',
     'phaer',
+    'Enam Mijbah Noor'
 )
 
 __license__ = 'Public Domain'
@@ -276,6 +277,10 @@ def parseOpts(overrideArguments=None):
         '--playlist-end',
         dest='playlistend', metavar='NUMBER', default=None, type=int,
         help='playlist video to end at (default is last)')
+    selection.add_option(
+        '--playlist-items',
+        dest='playlistitems', metavar='FORMAT', default=None,
+        help='playlist video items to download. Specify items seperated by commas like: "--playlist-items 1,2,5,8". You can specify range: "--playlist-items 1-4,7,10,12-15,20".')
     selection.add_option('--match-title', dest='matchtitle', metavar='REGEX',help='download only matching titles (regex or caseless sub-string)')
     selection.add_option('--reject-title', dest='rejecttitle', metavar='REGEX',help='skip download for matching titles (regex or caseless sub-string)')
     selection.add_option('--max-downloads', metavar='NUMBER',
@@ -744,6 +749,7 @@ def _real_main(argv=None):
         'progress_with_newline': opts.progress_with_newline,
         'playliststart': opts.playliststart,
         'playlistend': opts.playlistend,
+        'playlistitems': opts.playlistitems,
         'noplaylist': opts.noplaylist,
         'logtostderr': opts.outtmpl == '-',
         'consoletitle': opts.consoletitle,