mirror of
https://github.com/ticky/wayback-classic.git
synced 2026-06-11 15:47:11 -04:00
61 lines
2.0 KiB
Ruby
61 lines
2.0 KiB
Ruby
require 'uri'
|
|
|
|
module WaybackClassic
|
|
class LegacyClientEncoding
|
|
def self.detect(*args)
|
|
new(*args)
|
|
end
|
|
|
|
attr_reader :utf8, :encoding_override
|
|
|
|
def initialize(env=ENV)
|
|
@utf8 = nil
|
|
|
|
# TODO: Handle un-encoded values, somehow?
|
|
query = URI.decode_www_form(env["QUERY_STRING"] || "").to_h
|
|
|
|
unless query["utf8"].nil? || query["utf8"].empty?
|
|
@utf8 = query["utf8"]
|
|
query.delete("utf8")
|
|
|
|
env["QUERY_STRING"] = URI.encode_www_form query
|
|
end
|
|
|
|
@encoding_override = if @utf8 != nil
|
|
canary_bytes = @utf8.split('').map(&:ord)
|
|
# Note: UTF-8 would be [0x2713]
|
|
case canary_bytes
|
|
# Safari forced to Shift_JIS mode
|
|
when [0xfffd, 0x26, 0x23, 0x36, 0x35, 0x35, 0x33, 0x33, 0x3b],
|
|
# Dream Passport 3
|
|
[0xfffd, 0x13]
|
|
"Shift_JIS" # or GB 2312
|
|
# when [0x26, 0x23, 0x36, 0x35, 0x35, 0x33, 0x33, 0x3b,
|
|
# 0x26, 0x23, 0x36, 0x35, 0x35, 0x33, 0x33, 0x3b,
|
|
# 0x26, 0x23, 0x36, 0x35, 0x35, 0x33, 0x33, 0x3b]
|
|
# "ISO-2022-JP"
|
|
# when [0x26, 0x23, 0x36, 0x35, 0x35, 0x33, 0x33, 0x3b,
|
|
# 0x26, 0x23, 0x36, 0x35, 0x35, 0x33, 0x33, 0x3b]
|
|
# "EUC-JP" # or Big5, or Korean Windows
|
|
# when [0x2704, 0x31, 0xfffd, 0x37]
|
|
# "GB 18030" # or ISO Latin2
|
|
end
|
|
end
|
|
end
|
|
|
|
def encode(value)
|
|
return value unless @encoding_override
|
|
|
|
value.encode(@encoding_override, undef: :replace).force_encoding("UTF-8")
|
|
end
|
|
|
|
def quotify(value)
|
|
if @encoding_override
|
|
"\"#{value}\""
|
|
else
|
|
"“#{value}”"
|
|
end
|
|
end
|
|
end
|
|
end
|