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# frozen_string_literal: true
# Released under the MIT License.
# Copyright, 2016-2024, by Samuel Williams.
module HTTP
module Accept
# According to https://tools.ietf.org/html/rfc7231#appendix-C
TOKEN = /[!#$%&'*+\-.^_`|~0-9A-Z]+/i
QUOTED_STRING = /"(?:.(?!(?<!\\)"))*.?"/
module QuotedString
# Unquote a "quoted-string" value according to https://tools.ietf.org/html/rfc7230#section-3.2.6
# It should already match the QUOTED_STRING pattern above by the parser.
def self.unquote(value, normalize_whitespace = true)
value = value[1...-1]
value.gsub!(/\\(.)/, '\1')
if normalize_whitespace
# LWS = [CRLF] 1*( SP | HT )
value.gsub!(/[\r\n]+\s+/, ' ')
end
return value
end
# Quote a string if required. Doesn't handle newlines correctly currently.
def self.quote(value, force = false)
if value =~ /"/ or force
"\"#{value.gsub(/["\\]/, "\\\\\\0")}\""
else
return value
end
end
end
end
end
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