X-Git-Url: http://git.cielonegro.org/gitweb.cgi?a=blobdiff_plain;f=youtube_dl%2Futils.py;h=d4df78071663489752a80a1a833662fe5505ec3b;hb=478c2c619364f5fb0c1ee9e9489048ab4ae26521;hp=9c93209349c971f795280a6d41a12c012918004b;hpb=aafddb2b0a0c6493e5c1e9f92c1570d3c018845b;p=youtube-dl.git

diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index 9c9320934..d4df78071 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -923,9 +923,6 @@ def _windows_write_string(s, out):
         2: -12,
     }
 
-    def ucs2_len(s):
-        return sum((2 if ord(c) > 0xffff else 1) for c in s)
-
     fileno = out.fileno()
     if fileno not in WIN_OUTPUT_IDS:
         return False
@@ -959,13 +956,25 @@ def _windows_write_string(s, out):
     if not_a_console(h):
         return False
 
-    remaining = ucs2_len(s)
-    while remaining > 0:
+    def next_nonbmp_pos(s):
+        try:
+            return next(i for i, c in enumerate(s) if ord(c) > 0xffff)
+        except StopIteration:
+            return len(s)
+
+    while s:
+        count = min(next_nonbmp_pos(s), 1024)
+
         ret = WriteConsoleW(
-            h, s, min(remaining, 1024), ctypes.byref(written), None)
+            h, s, count if count else 2, ctypes.byref(written), None)
         if ret == 0:
             raise OSError('Failed to write string')
-        remaining -= written.value
+        if not count:  # We just wrote a non-BMP character
+            assert written.value == 2
+            s = s[1:]
+        else:
+            assert written.value > 0
+            s = s[written.value:]
     return True
 
 
@@ -1397,3 +1406,14 @@ US_RATINGS = {
 
 def strip_jsonp(code):
     return re.sub(r'(?s)^[a-zA-Z_]+\s*\(\s*(.*)\);\s*?\s*$', r'\1', code)
+
+
+def qualities(quality_ids):
+    """ Get a numeric quality value out of a list of possible values """
+    def q(qid):
+        try:
+            return quality_ids.index(qid)
+        except ValueError:
+            return -1
+    return q
+