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