module ActionMailer module Quoting # 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 ) { "=%02x" % $&[0] }.gsub( / /, "_" ) "=?#{charset}?Q?#{text}?=" end # A quick-and-dirty regexp for determining whether a string contains any # characters that need escaping. CHARS_NEEDING_QUOTING = /[\000-\011\013\014\016-\037\177-\377]/ # Quote the given text if it contains any "illegal" characters def quote_if_necessary(text, charset) (text =~ CHARS_NEEDING_QUOTING) ? quoted_printable(text, charset) : text end # Quote any of the given strings if they contain any "illegal" characters def quote_any_if_necessary(charset, *args) args.map { |v| quote_if_necessary(v, charset) } end # Quote the given address if it needs to be. The address may be a # regular email address, or it can be a phrase followed by an address in # brackets. The phrase is the only part that will be quoted, and only if # it needs to be. This allows extended characters to be used in the # "to", "from", "cc", and "bcc" headers. def quote_address_if_necessary(address, charset) if Array === address address.map { |a| quote_address_if_necessary(a, charset) } elsif address =~ /^(\S.*)\s+(<.*>)$/ 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 module ActionMailer module Quoting # 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 ) { "=%02x" % $&[0] }.gsub( / /, "_" ) "=?#{charset}?Q?#{text}?=" end # A quick-and-dirty regexp for determining whether a string contains any # characters that need escaping. if !defined?(CHARS_NEEDING_QUOTING) CHARS_NEEDING_QUOTING = /[\000-\011\013\014\016-\037\177-\377]/ end # Quote the given text if it contains any "illegal" characters def quote_if_necessary(text, charset) (text =~ CHARS_NEEDING_QUOTING) ? quoted_printable(text, charset) : text end # Quote any of the given strings if they contain any "illegal" characters def quote_any_if_necessary(charset, *args) args.map { |v| quote_if_necessary(v, charset) } end # Quote the given address if it needs to be. The address may be a # regular email address, or it can be a phrase followed by an address in # brackets. The phrase is the only part that will be quoted, and only if # it needs to be. This allows extended characters to be used in the # "to", "from", "cc", and "bcc" headers. def quote_address_if_necessary(address, charset) if Array === address address.map { |a| quote_address_if_necessary(a, charset) } elsif address =~ /^(\S.*)\s+(<.*>)$/ 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