Provides a single class to call to create a new structured or unstructured field. Works out per RFC what field of field it is being given and returns the correct field of class back on new.
2.2. Header Fields Header fields are lines composed of a field name, followed by a colon (":"), followed by a field body, and terminated by CRLF. A field name MUST be composed of printable US-ASCII characters (i.e., characters that have values between 33 and 126, inclusive), except colon. A field body may be composed of any US-ASCII characters, except for CR and LF. However, a field body may contain CRLF when used in header "folding" and "unfolding" as described in section 2.2.3. All field bodies MUST conform to the syntax described in sections 3 and 4 of this standard.
Accepts a string:
Field.new("field-name: field data")
Or name, value pair:
Field.new("field-name", "value")
Or a name by itself:
Field.new("field-name")
Note, does not want a terminating carriage return. Returns self appropriately parsed. If value is not a string, then it will be passed through as is, for example, content-type field can accept an array with the type and a hash of parameters:
Field.new('content-type', ['text', 'plain', {:charset => 'UTF-8'}])
# File lib/mail/field.rb, line 78 def initialize(name, value = nil, charset = 'utf-8') case when name =~ %r:/ # Field.new("field-name: field data") charset = value unless value.blank? name, value = split(name) create_field(name, value, charset) when name !~ %r:/ && value.blank? # Field.new("field-name") create_field(name, nil, charset) else # Field.new("field-name", "value") create_field(name, value, charset) end return self end
# File lib/mail/field.rb, line 126 def <=>( other ) self_order = FIELD_ORDER.rindex(self.name.to_s.downcase) || 100 other_order = FIELD_ORDER.rindex(other.name.to_s.downcase) || 100 self_order <=> other_order end
# File lib/mail/field.rb, line 96 def field @field end
# File lib/mail/field.rb, line 92 def field=(value) @field = value end
# File lib/mail/field.rb, line 132 def method_missing(name, *args, &block) field.send(name, *args, &block) end
# File lib/mail/field.rb, line 100 def name field.name end
# File lib/mail/field.rb, line 120 def same( other ) match_to_s(other.name, field.name) end
# File lib/mail/field.rb, line 112 def to_s field.to_s end
# File lib/mail/field.rb, line 116 def update(name, value) create_field(name, value, charset) end
# File lib/mail/field.rb, line 104 def value field.value end
# File lib/mail/field.rb, line 108 def value=(val) create_field(name, val, charset) end