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|
# frozen_string_literal: true
require 'mail/utilities'
require 'mail/parser_tools'
begin
original_verbose, $VERBOSE = $VERBOSE, nil
%%{
machine content_transfer_encoding;
alphtype int;
action encoding_s { encoding_s = p }
action encoding_e { content_transfer_encoding.encoding = chars(data, encoding_s, p-1).downcase }
# No-op actions
action comment_e { }
action comment_s { }
action phrase_e { }
action phrase_s { }
action qstr_e { }
action qstr_s { }
action param_attr_e { }
action param_attr_s { }
action param_val_e { }
action param_val_s { }
action main_type_e { }
action main_type_s { }
action sub_type_e { }
action sub_type_s { }
include rfc2045_content_transfer_encoding "rfc2045_content_transfer_encoding.rl";
main := content_transfer_encoding;
}%%
module Mail::Parsers
module ContentTransferEncodingParser
extend Mail::ParserTools
ContentTransferEncodingStruct = Struct.new(:encoding, :error)
%%write data noprefix;
def self.parse(data)
data = data.dup.force_encoding(Encoding::ASCII_8BIT) if data.respond_to?(:force_encoding)
content_transfer_encoding = ContentTransferEncodingStruct.new('')
return content_transfer_encoding if Mail::Utilities.blank?(data)
# Parser state
encoding_s = nil
# 5.1 Variables Used by Ragel
p = 0
eof = pe = data.length
stack = []
%%write init;
%%write exec;
if p != eof || cs < %%{ write first_final; }%%
raise Mail::Field::IncompleteParseError.new(Mail::ContentTransferEncodingElement, data, p)
end
content_transfer_encoding
end
end
end
ensure
$VERBOSE = original_verbose
end
|
