
...
# Where the thumbnails live:
XDGCACHE = os.getenv('XDG_CACHE_DIR', os.path.expanduser("~/.cache"))
THUMBDIRS = [os.path.join(XDGCACHE, "thumbnails"),
             os.path.expanduser("~/.thumbnails")]

def url_encode_for_thumb(in_s, offs):
  h = b"0123456789ABCDEF"
  out = in_s[:offs]
  for i in range(offs, len(in_s)):
    c = in_s[i]
    if c <= 0x20 or c >= 0x7f or in_s[i] in b'"#%;<>?[\\]^`{|}':
      out += bytes('%', 'ascii');
      out += bytes(chr(h[(c >> 4) & 0xf]), 'ascii')
      out += bytes(chr(h[c & 0xf]), 'ascii')
    else:
      out += bytes(chr(c), 'ascii')
      pass
  return out

def _get_thumbnail_path(url):
    """Look for a thumbnail for the input url, according to the
    freedesktop thumbnail storage standard. The input 'url' always
    begins with file:// and is binary. We encode it properly
    and compute the path inside the thumbnail storage
    directory. We return the path only if the thumbnail does exist
    (no generation performed)"""
    global THUMBDIRS

    # Compute the thumbnail file name by encoding and hashing the url string

    try:
      url = url_encode_for_thumb(url, 7)
    except Exception as msg:
        print("_get_thumbnail_path: url encode failed: %s" % msg, 
              file=sys.stderr)
        return ""
    #print("_get_thumbnail: encoded path: [%s]" % url, file=sys.stderr)
    thumbname = hashlib.md5(url).hexdigest() + ".png"

    # If the "new style" directory exists, we should stop looking in
    # the "old style" one (there might be interesting files in there,
    # but they may be stale, so it's best to not touch them). We do
    # this semi-dynamically so that we catch things up if the

	a/src/desktop/unity-scope-recoll/unity_recoll_daemon.py		b/src/desktop/unity-scope-recoll/unity_recoll_daemon.py
	...		...
108	# Where the thumbnails live:	108	# Where the thumbnails live:
109	XDGCACHE = os.getenv('XDG_CACHE_DIR', os.path.expanduser("~/.cache"))	109	XDGCACHE = os.getenv('XDG_CACHE_DIR', os.path.expanduser("~/.cache"))
110	THUMBDIRS = [os.path.join(XDGCACHE, "thumbnails"),	110	THUMBDIRS = [os.path.join(XDGCACHE, "thumbnails"),
111	os.path.expanduser("~/.thumbnails")]	111	os.path.expanduser("~/.thumbnails")]
112		112
		113	def url_encode_for_thumb(in_s, offs):
		114	h = b"0123456789ABCDEF"
		115	out = in_s[:offs]
		116	for i in range(offs, len(in_s)):
		117	c = in_s[i]
		118	if c <= 0x20 or c >= 0x7f or in_s[i] in b'"#%;<>?[\\]^`{\|}':
		119	out += bytes('%', 'ascii');
		120	out += bytes(chr(h[(c >> 4) & 0xf]), 'ascii')
		121	out += bytes(chr(h[c & 0xf]), 'ascii')
		122	else:
		123	out += bytes(chr(c), 'ascii')
		124	pass
		125	return out
		126
113	def _get_thumbnail_path(url):	127	def _get_thumbnail_path(url):
114	"""Look for a thumbnail for the input url, according to the	128	"""Look for a thumbnail for the input url, according to the
115	freedesktop thumbnail storage standard. The input 'url' always	129	freedesktop thumbnail storage standard. The input 'url' always
116	begins with file:// and is unencoded. We encode it properly	130	begins with file:// and is binary. We encode it properly
117	and compute the path inside the thumbnail storage	131	and compute the path inside the thumbnail storage
118	directory. We return the path only if the thumbnail does exist	132	directory. We return the path only if the thumbnail does exist
119	(no generation performed)"""	133	(no generation performed)"""
120	global THUMBDIRS	134	global THUMBDIRS
121		135
122	# Compute the thumbnail file name by encoding and hashing the url string	136	# Compute the thumbnail file name by encoding and hashing the url string
123	path = url[7:]
124	try:	137	try:
125	path = "file://" + urllib.parse.quote_from_bytes(path)	138	url = url_encode_for_thumb(url, 7)
126	except Exception as msg:	139	except Exception as msg:
127	print("_get_thumbnail_path: urllib.parse.quote failed: %s" % msg,	140	print("_get_thumbnail_path: url encode failed: %s" % msg,
128	file=sys.stderr)	141	file=sys.stderr)
129	return ""	142	return ""
130	#print("_get_thumbnail: encoded path: [%s]" % path, file=sys.stderr)	143	#print("_get_thumbnail: encoded path: [%s]" % url, file=sys.stderr)
131	thumbname = hashlib.md5(path.encode('utf-8')).hexdigest() + ".png"	144	thumbname = hashlib.md5(url).hexdigest() + ".png"
132		145
133	# If the "new style" directory exists, we should stop looking in	146	# If the "new style" directory exists, we should stop looking in
134	# the "old style" one (there might be interesting files in there,	147	# the "old style" one (there might be interesting files in there,
135	# but they may be stale, so it's best to not touch them). We do	148	# but they may be stale, so it's best to not touch them). We do
136	# this semi-dynamically so that we catch things up if the	149	# this semi-dynamically so that we catch things up if the