Bundle tmail 1.2.3

1 files changed, 581 insertions, 0 deletions

diff --git a/actionmailer/lib/action_mailer/vendor/tmail-1.2.3/tmail/encode.rb b/actionmailer/lib/action_mailer/vendor/tmail-1.2.3/tmail/encode.rb
new file mode 100644
index 0000000000..458dbbfe6a
--- /dev/null
+++ b/actionmailer/lib/action_mailer/vendor/tmail-1.2.3/tmail/encode.rb
@@ -0,0 +1,581 @@
+#--
+# = COPYRIGHT:
+#
+#   Copyright (c) 1998-2003 Minero Aoki <aamine@loveruby.net>
+#
+#   Permission is hereby granted, free of charge, to any person obtaining
+#   a copy of this software and associated documentation files (the
+#   "Software"), to deal in the Software without restriction, including
+#   without limitation the rights to use, copy, modify, merge, publish,
+#   distribute, sublicense, and/or sell copies of the Software, and to
+#   permit persons to whom the Software is furnished to do so, subject to
+#   the following conditions:
+#
+#   The above copyright notice and this permission notice shall be
+#   included in all copies or substantial portions of the Software.
+#
+#   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+#   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+#   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+#   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+#   LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+#   OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+#   WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+#   Note: Originally licensed under LGPL v2+. Using MIT license for Rails
+#   with permission of Minero Aoki.
+#++
+#:stopdoc:
+require 'nkf'
+require 'tmail/base64'
+require 'tmail/stringio'
+require 'tmail/utils'
+#:startdoc:
+
+
+module TMail
+  
+  #:stopdoc:
+  class << self
+    attr_accessor :KCODE
+  end
+  self.KCODE = 'NONE'
+
+  module StrategyInterface
+
+    def create_dest( obj )
+      case obj
+      when nil
+        StringOutput.new
+      when String
+        StringOutput.new(obj)
+      when IO, StringOutput
+        obj
+      else
+        raise TypeError, 'cannot handle this type of object for dest'
+      end
+    end
+    module_function :create_dest
+
+    #:startdoc:
+    # Returns the TMail object encoded and ready to be sent via SMTP etc.
+    # You should call this before you are packaging up your  email to
+    # correctly escape all the values that need escaping in the email, line
+    # wrap the email etc.
+    # 
+    # It is also a good idea to call this before you marshal or serialize
+    # a TMail object.
+    # 
+    # For Example:
+    # 
+    #  email = TMail::Load(my_email_file)
+    #  email_to_send = email.encoded
+    def encoded( eol = "\r\n", charset = 'j', dest = nil )
+      accept_strategy Encoder, eol, charset, dest
+    end
+
+    # Returns the TMail object decoded and ready to be used by you, your
+    # program etc.
+    # 
+    # You should call this before you are packaging up your  email to
+    # correctly escape all the values that need escaping in the email, line
+    # wrap the email etc.
+    # 
+    # For Example:
+    # 
+    #  email = TMail::Load(my_email_file)
+    #  email_to_send = email.encoded
+    def decoded( eol = "\n", charset = 'e', dest = nil )
+      # Turn the E-Mail into a string and return it with all
+      # encoded characters decoded.  alias for to_s
+      accept_strategy Decoder, eol, charset, dest
+    end
+
+    alias to_s decoded
+
+    def accept_strategy( klass, eol, charset, dest = nil ) #:nodoc:
+      dest ||= ''
+      accept klass.new( create_dest(dest), charset, eol )
+      dest
+    end
+
+  end
+
+  #:stopdoc:
+
+  ###
+  ### MIME B encoding decoder
+  ###
+
+  class Decoder
+
+    include TextUtils
+
+    encoded = '=\?(?:iso-2022-jp|euc-jp|shift_jis)\?[QB]\?[a-z0-9+/=]+\?='
+    ENCODED_WORDS = /#{encoded}(?:\s+#{encoded})*/i
+
+    OUTPUT_ENCODING = {
+      'EUC'  => 'e',
+      'SJIS' => 's',
+    }
+
+    def self.decode( str, encoding = nil )
+      encoding ||= (OUTPUT_ENCODING[TMail.KCODE] || 'j')
+      opt = '-mS' + encoding
+      str.gsub(ENCODED_WORDS) {|s| NKF.nkf(opt, s) }
+    end
+
+    def initialize( dest, encoding = nil, eol = "\n" )
+      @f = StrategyInterface.create_dest(dest)
+      @encoding = (/\A[ejs]/ === encoding) ? encoding[0,1] : nil
+      @eol = eol
+    end
+
+    def decode( str )
+      self.class.decode(str, @encoding)
+    end
+    private :decode
+
+    def terminate
+    end
+
+    def header_line( str )
+      @f << decode(str)
+    end
+
+    def header_name( nm )
+      @f << nm << ': '
+    end
+
+    def header_body( str )
+      @f << decode(str)
+    end
+
+    def space
+      @f << ' '
+    end
+
+    alias spc space
+
+    def lwsp( str )
+      @f << str
+    end
+
+    def meta( str )
+      @f << str
+    end
+
+    def text( str )
+      @f << decode(str)
+    end
+
+    def phrase( str )
+      @f << quote_phrase(decode(str))
+    end
+
+    def kv_pair( k, v )
+      v = dquote(v) unless token_safe?(v)
+      @f << k << '=' << v
+    end
+
+    def puts( str = nil )
+      @f << str if str
+      @f << @eol
+    end
+
+    def write( str )
+      @f << str
+    end
+
+  end
+
+
+  ###
+  ### MIME B-encoding encoder
+  ###
+
+  #
+  # FIXME: This class can handle only (euc-jp/shift_jis -> iso-2022-jp).
+  #
+  class Encoder
+
+    include TextUtils
+
+    BENCODE_DEBUG = false unless defined?(BENCODE_DEBUG)
+
+    def Encoder.encode( str )
+      e = new()
+      e.header_body str
+      e.terminate
+      e.dest.string
+    end
+
+    SPACER       = "\t"
+    MAX_LINE_LEN = 78
+    RFC_2822_MAX_LENGTH = 998
+
+    OPTIONS = {
+      'EUC'  => '-Ej -m0',
+      'SJIS' => '-Sj -m0',
+      'UTF8' => nil,      # FIXME
+      'NONE' => nil
+    }
+
+    def initialize( dest = nil, encoding = nil, eol = "\r\n", limit = nil )
+      @f = StrategyInterface.create_dest(dest)
+      @opt = OPTIONS[TMail.KCODE]
+      @eol = eol
+      @folded = false
+      @preserve_quotes = true
+      reset
+    end
+
+    def preserve_quotes=( bool )
+      @preserve_quotes
+    end
+
+    def preserve_quotes
+      @preserve_quotes
+    end
+
+    def normalize_encoding( str )
+      if @opt
+      then NKF.nkf(@opt, str)
+      else str
+      end
+    end
+
+    def reset
+      @text = ''
+      @lwsp = ''
+      @curlen = 0
+    end
+
+    def terminate
+      add_lwsp ''
+      reset
+    end
+
+    def dest
+      @f
+    end
+
+    def puts( str = nil )
+      @f << str if str
+      @f << @eol
+    end
+
+    def write( str )
+      @f << str
+    end
+
+    #
+    # add
+    #
+
+    def header_line( line )
+      scanadd line
+    end
+
+    def header_name( name )
+      add_text name.split(/-/).map {|i| i.capitalize }.join('-')
+      add_text ':'
+      add_lwsp ' '
+    end
+
+    def header_body( str )
+      scanadd normalize_encoding(str)
+    end
+
+    def space
+      add_lwsp ' '
+    end
+
+    alias spc space
+
+    def lwsp( str )
+      add_lwsp str.sub(/[\r\n]+[^\r\n]*\z/, '')
+    end
+
+    def meta( str )
+      add_text str
+    end
+
+    def text( str )
+      scanadd normalize_encoding(str)
+    end
+
+    def phrase( str )
+      str = normalize_encoding(str)
+      if CONTROL_CHAR === str
+        scanadd str
+      else
+        add_text quote_phrase(str)
+      end
+    end
+
+    # FIXME: implement line folding
+    #
+    def kv_pair( k, v )
+      return if v.nil?
+      v = normalize_encoding(v)
+      if token_safe?(v)
+        add_text k + '=' + v
+      elsif not CONTROL_CHAR === v
+        add_text k + '=' + quote_token(v)
+      else
+        # apply RFC2231 encoding
+        kv = k + '*=' + "iso-2022-jp'ja'" + encode_value(v)
+        add_text kv
+      end
+    end
+
+    def encode_value( str )
+      str.gsub(TOKEN_UNSAFE) {|s| '%%%02x' % s[0] }
+    end
+
+    private
+
+    def scanadd( str, force = false )
+      types = ''
+      strs = []
+      if str.respond_to?(:encoding)
+        enc = str.encoding 
+        str.force_encoding(Encoding::ASCII_8BIT)
+      end
+      until str.empty?
+        if m = /\A[^\e\t\r\n ]+/.match(str)
+          types << (force ? 'j' : 'a')
+          if str.respond_to?(:encoding)
+            strs.push m[0].force_encoding(enc)
+          else
+            strs.push m[0]
+          end
+        elsif m = /\A[\t\r\n ]+/.match(str)
+          types << 's'
+          if str.respond_to?(:encoding)
+            strs.push m[0].force_encoding(enc)
+          else
+            strs.push m[0]
+          end
+
+        elsif m = /\A\e../.match(str)
+          esc = m[0]
+          str = m.post_match
+          if esc != "\e(B" and m = /\A[^\e]+/.match(str)
+            types << 'j'
+            if str.respond_to?(:encoding)
+              strs.push m[0].force_encoding(enc)
+            else
+              strs.push m[0]
+            end
+          end
+
+        else
+          raise 'TMail FATAL: encoder scan fail'
+        end
+        (str = m.post_match) unless m.nil?
+      end
+
+      do_encode types, strs
+    end
+
+    def do_encode( types, strs )
+      #
+      # result  : (A|E)(S(A|E))*
+      # E       : W(SW)*
+      # W       : (J|A)+ but must contain J  # (J|A)*J(J|A)*
+      # A       : <<A character string not to be encoded>>
+      # J       : <<A character string to be encoded>>
+      # S       : <<LWSP>>
+      #
+      # An encoding unit is `E'.
+      # Input (parameter `types') is  (J|A)(J|A|S)*(J|A)
+      #
+      if BENCODE_DEBUG
+        puts
+        puts '-- do_encode ------------'
+        puts types.split(//).join(' ')
+        p strs
+      end
+
+      e = /[ja]*j[ja]*(?:s[ja]*j[ja]*)*/
+
+      while m = e.match(types)
+        pre = m.pre_match
+        concat_A_S pre, strs[0, pre.size] unless pre.empty?
+        concat_E m[0], strs[m.begin(0) ... m.end(0)]
+        types = m.post_match
+        strs.slice! 0, m.end(0)
+      end
+      concat_A_S types, strs
+    end
+
+    def concat_A_S( types, strs )
+      if RUBY_VERSION < '1.9'
+        a = ?a; s = ?s
+      else
+        a = 'a'.ord; s = 's'.ord
+      end
+      i = 0
+      types.each_byte do |t|
+        case t
+        when a then add_text strs[i]
+        when s then add_lwsp strs[i]
+        else
+          raise "TMail FATAL: unknown flag: #{t.chr}"
+        end
+        i += 1
+      end
+    end
+
+    METHOD_ID = {
+      ?j => :extract_J,
+      ?e => :extract_E,
+      ?a => :extract_A,
+      ?s => :extract_S
+    }
+
+    def concat_E( types, strs )
+      if BENCODE_DEBUG
+        puts '---- concat_E'
+        puts "types=#{types.split(//).join(' ')}"
+        puts "strs =#{strs.inspect}"
+      end
+
+      flush() unless @text.empty?
+
+      chunk = ''
+      strs.each_with_index do |s,i|
+        mid = METHOD_ID[types[i]]
+        until s.empty?
+          unless c = __send__(mid, chunk.size, s)
+            add_with_encode chunk unless chunk.empty?
+            flush
+            chunk = ''
+            fold
+            c = __send__(mid, 0, s)
+            raise 'TMail FATAL: extract fail' unless c
+          end
+          chunk << c
+        end
+      end
+      add_with_encode chunk unless chunk.empty?
+    end
+
+    def extract_J( chunksize, str )
+      size = max_bytes(chunksize, str.size) - 6
+      size = (size % 2 == 0) ? (size) : (size - 1)
+      return nil if size <= 0
+      if str.respond_to?(:encoding)
+        enc = str.encoding
+        str.force_encoding(Encoding::ASCII_8BIT)
+        "\e$B#{str.slice!(0, size)}\e(B".force_encoding(enc)
+      else
+        "\e$B#{str.slice!(0, size)}\e(B"
+      end
+    end
+
+    def extract_A( chunksize, str )
+      size = max_bytes(chunksize, str.size)
+      return nil if size <= 0
+      str.slice!(0, size)
+    end
+
+    alias extract_S extract_A
+
+    def max_bytes( chunksize, ssize )
+      (restsize() - '=?iso-2022-jp?B??='.size) / 4 * 3 - chunksize
+    end
+
+    #
+    # free length buffer
+    #
+
+    def add_text( str )
+      @text << str
+      # puts '---- text -------------------------------------'
+      # puts "+ #{str.inspect}"
+      # puts "txt >>>#{@text.inspect}<<<"
+    end
+
+    def add_with_encode( str )
+      @text << "=?iso-2022-jp?B?#{Base64.encode(str)}?="
+    end
+
+    def add_lwsp( lwsp )
+      # puts '---- lwsp -------------------------------------'
+      # puts "+ #{lwsp.inspect}"
+      fold if restsize() <= 0
+      flush(@folded)
+      @lwsp = lwsp
+    end
+
+    def flush(folded = false)
+      # puts '---- flush ----'
+      # puts "spc >>>#{@lwsp.inspect}<<<"
+      # puts "txt >>>#{@text.inspect}<<<"
+      @f << @lwsp << @text
+      if folded
+        @curlen = 0
+      else
+        @curlen += (@lwsp.size + @text.size)
+      end
+      @text = ''
+      @lwsp = ''
+    end
+
+    def fold
+      # puts '---- fold ----'
+      unless @f.string =~ /^.*?:$/
+        @f << @eol
+        @lwsp = SPACER
+      else
+        fold_header
+        @folded = true
+      end
+      @curlen = 0
+    end
+
+    def fold_header
+      # Called because line is too long - so we need to wrap.
+      # First look for whitespace in the text
+      # if it has text, fold there
+      # check the remaining text, if too long, fold again
+      # if it doesn't, then don't fold unless the line goes beyond 998 chars
+
+      # Check the text to see if there is whitespace, or if not
+      @wrapped_text = []
+      until @text.blank?
+        fold_the_string
+      end
+      @text = @wrapped_text.join("#{@eol}#{SPACER}")
+    end
+
+    def fold_the_string
+      whitespace_location = @text =~ /\s/ || @text.length
+      # Is the location of the whitespace shorter than the RCF_2822_MAX_LENGTH?
+      # if there is no whitespace in the string, then this
+      unless mazsize(whitespace_location) <= 0
+        @text.strip!
+        @wrapped_text << @text.slice!(0...whitespace_location)
+      # If it is not less, we have to wrap it destructively
+      else
+        slice_point = RFC_2822_MAX_LENGTH - @curlen - @lwsp.length
+        @text.strip!
+        @wrapped_text << @text.slice!(0...slice_point)
+      end
+    end
+
+    def restsize
+      MAX_LINE_LEN - (@curlen + @lwsp.size + @text.size)
+    end
+
+    def mazsize(whitespace_location)
+      # Per RFC2822, the maximum length of a line is 998 chars
+      RFC_2822_MAX_LENGTH - (@curlen + @lwsp.size + whitespace_location)
+    end
+
+  end
+  #:startdoc:
+end    # module TMail