Class: Mail::ParameterHash

Inherits:
HashWithIndifferentAccess
  • Object
show all
Includes:
Utilities
Defined in:
lib/mail/fields/common/parameter_hash.rb

Overview

ParameterHash is an intelligent Hash that allows you to add parameter values including the MIME extension paramaters that have the name*0=“blah”, name*1=“bleh” keys, and will just return a single key called name=“blahbleh” and do any required un-encoding to make that happen Parameters are defined in RFC2045, split keys are in RFC2231

Constant Summary

Constants included from Patterns

Mail::Patterns::ATOM_UNSAFE, Mail::Patterns::CONTROL_CHAR, Mail::Patterns::CRLF, Mail::Patterns::FIELD_BODY, Mail::Patterns::FIELD_LINE, Mail::Patterns::FIELD_NAME, Mail::Patterns::FWS, Mail::Patterns::HEADER_LINE, Mail::Patterns::PHRASE_UNSAFE, Mail::Patterns::QP_SAFE, Mail::Patterns::QP_UNSAFE, Mail::Patterns::TEXT, Mail::Patterns::TOKEN_UNSAFE, Mail::Patterns::WSP

Instance Method Summary collapse

Methods included from Utilities

#atom_safe?, #bracket, #capitalize_field, #constantize, #dasherize, #dquote, #escape_paren, #map_lines, #map_with_index, #match_to_s, #paren, #quote_atom, #quote_phrase, #quote_token, #token_safe?, #unbracket, #underscoreize, #unparen, #unquote, #uri_escape, #uri_unescape

Instance Method Details

#[](key_name) ⇒ Object 



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# File 'lib/mail/fields/common/parameter_hash.rb', line 15

def [](key_name)
  key_pattern = Regexp.escape(key_name.to_s)
  pairs = []
  exact = nil
  each do |k,v|
    if k =~ /^#{key_pattern}(\*|$)/i
      if $1 == '*'
        pairs << [k, v]
      else
        exact = k
      end
    end
  end
  if pairs.empty? # Just dealing with a single value pair
    super(exact || key_name)
  else # Dealing with a multiple value pair or a single encoded value pair
    string = pairs.sort { |a,b| a.first <=> b.first }.map { |v| v.last }.join('')
    if mt = string.match(/([\w\d\-]+)'(\w\w)'(.*)/)
      string = mt[3]
      encoding = mt[1]
    else
      encoding = nil
    end
    Mail::Encodings.param_decode(string, encoding)
  end
end

#decoded ⇒ Object 



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# File 'lib/mail/fields/common/parameter_hash.rb', line 52

def decoded
  map.sort { |a,b| a.first <=> b.first }.map do |key_name, value|
    %Q{#{key_name}=#{quote_token(value)}}
  end.join("; ")
end

#encoded ⇒ Object 



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# File 'lib/mail/fields/common/parameter_hash.rb', line 42

def encoded
  map.sort { |a,b| a.first <=> b.first }.map do |key_name, value|
    unless value.ascii_only?
      value = Mail::Encodings.param_encode(value)
      key_name = "#{key_name}*"
    end
    %Q{#{key_name}=#{quote_token(value)}}
  end.join(";\r\n\s")
end