1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
module Rack::Accept
# Represents an HTTP Accept-Encoding header according to the HTTP 1.1
# specification, and provides several convenience methods for determining
# acceptable content encodings.
#
# http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.3
class Encoding
include Header
# The name of this header.
def name
'Accept-Encoding'
end
# Determines the quality factor (qvalue) of the given +encoding+.
def qvalue(encoding)
m = matches(encoding)
if m.empty?
encoding == 'identity' ? 1 : 0
else
normalize_qvalue(@qvalues[m.first])
end
end
# Returns an array of encodings from this header that match the given
# +encoding+, ordered by precedence.
def matches(encoding)
values.select {|v|
v == encoding || v == '*'
}.sort {|a, b|
# "*" gets least precedence, any others should be equal.
a == '*' ? 1 : (b == '*' ? -1 : 0)
}
end
end
end
|
