1
0
Fork 0
mirror of https://github.com/rails/rails.git synced 2022-11-09 12:12:34 -05:00
rails--rails/actionmailer/lib/action_mailer/quoting.rb
2005-09-01 14:26:13 +00:00

59 lines
2.2 KiB
Ruby

module ActionMailer
module Quoting #:nodoc:
# Convert the given text into quoted printable format, with an instruction
# that the text be eventually interpreted in the given charset.
def quoted_printable(text, charset)
text = text.gsub( /[^a-z ]/i ) { quoted_printable_encode($&) }.
gsub( / /, "_" )
"=?#{charset}?Q?#{text}?="
end
# Convert the given character to quoted printable format, taking into
# account multi-byte characters (if executing with $KCODE="u", for instance)
def quoted_printable_encode(character)
result = ""
character.each_byte { |b| result << "=%02x" % b }
result
end
# A quick-and-dirty regexp for determining whether a string contains any
# characters that need escaping.
if !defined?(CHARS_NEEDING_QUOTING)
CHARS_NEEDING_QUOTING = /[\000-\011\013\014\016-\037\177-\377]/
end
# Quote the given text if it contains any "illegal" characters
def quote_if_necessary(text, charset)
(text =~ CHARS_NEEDING_QUOTING) ?
quoted_printable(text, charset) :
text
end
# Quote any of the given strings if they contain any "illegal" characters
def quote_any_if_necessary(charset, *args)
args.map { |v| quote_if_necessary(v, charset) }
end
# Quote the given address if it needs to be. The address may be a
# regular email address, or it can be a phrase followed by an address in
# brackets. The phrase is the only part that will be quoted, and only if
# it needs to be. This allows extended characters to be used in the
# "to", "from", "cc", and "bcc" headers.
def quote_address_if_necessary(address, charset)
if Array === address
address.map { |a| quote_address_if_necessary(a, charset) }
elsif address =~ /^(\S.*)\s+(<.*>)$/
address = $2
phrase = quote_if_necessary($1.gsub(/^['"](.*)['"]$/, '\1'), charset)
"\"#{phrase}\" #{address}"
else
address
end
end
# Quote any of the given addresses, if they need to be.
def quote_any_address_if_necessary(charset, *args)
args.map { |v| quote_address_if_necessary(v, charset) }
end
end
end