#!/usr/bin/ruby

wsp           = '[\x20\x09]'
vchar         = '[\x21-\x7e]'
quoted_pair   = "\\\\(?:#{vchar}|#{wsp})"
qtext         = '[\x21\x23-\x5b\x5d-\x7e]'
qcontent      = "(?:#{qtext}|#{quoted_pair})"
quoted_string = "\"#{qcontent}*\""
atext         = '[a-zA-Z0-9!#$%&\'*+\-\/\=?^_`{|}~]'
dot_atom_text = "#{atext}+(?:[.]#{atext}+)*"
dot_atom      = dot_atom_text
local_part    = "(?:#{dot_atom}|#{quoted_string})"
domain        = dot_atom
addr_spec     = "#{local_part}[@]#{domain}"
puts 'addr_spec: ' + addr_spec

dot_atom_loose   = "#{atext}+(?:[.]|#{atext})*"
local_part_loose = "(?:#{dot_atom_loose}|#{quoted_string})"
addr_spec_loose  = "#{local_part_loose}[@]#{domain}"
puts 'addr_spec_loose: ' + addr_spec_loose

valid = [
    'foo@example.com', # normal

    # local-part
     # dot-atom
     'foo.hoge@example.com',
     'foo.bar.baz@example.com',
     # quoted-string
     '"foo"@example.com',
     '"!"@example.com', # \x21
     '"#"@example.com', # \x23
     '"["@example.com', # \x5b
     '"]"@example.com', # \x5d
     '"["@example.com', # \x7e
      # quoted-pair
      '"foo\\ "@example.com', # \x20
      "\"foo\\\x09\"\@example.com", # \x09 # php @
      '"\\!"@example.com', # \x21
      '"\\["@example.com', # \x7e

    # domain
    'foo.hoge@localhost',
    'foo.hoge@sub.example.com',
]
valid_loose = [
    'foo.@docomo.ne.jp',
    'foo.foo.@docomo.ne.jp',
    'foo..@docomo.ne.jp',
    'foo..foo@docomo.ne.jp',
    'foo..foo.@docomo.ne.jp',
]

invalid = [
    '',
    'foo',
    'foo@',
    '@foo',
    # local-part
     # dot-atom
     '.foo@example.com',
     '..foo@example.com',
     'foo@@example.com',
     'foo[@example.com',
     'foo @example.com',
     # quoted-string
      "\"\x00\"\@example.com", # \x00 # php @
     '" "@example.com', # \x20
     '"""@example.com', # \x22
     '"\\"@example.com', # \x5c
      "\"\x7f\"\@example.com", # \x7f # php @
      # quoted-pair
      "\"\\\x1f\"\@example.com", # \x1f # php @
      "\"\\\x7f\"\@example.com", # \x7f # php @

    # \z check
    "foo@example.com\n",
    "foo@example.com\nfoo@example.com",

    # non-ascii
    "\x80\@example.com",
    "\"\x80\"\@example.com",
    "\"\\\x80\"\@example.com",
    # utf8
    "\x100\@example.com",
    "\"\x100\"\@example.com",
    "\"\\\x100\"\@example.com",
]


$count = 0
def ok(regexp, addr, desc, xor = 0)
    $count = $count + 1
    if  (/\A#{regexp}\z/ =~ addr) ^ xor then
        puts "ok #{$count} - #{desc}";
    else
        puts "not ok #{$count} - #{desc}";
    end
end

def not_ok(regexp, addr, desc)
    ok(regexp, addr, desc, 1)
end

# normal
valid.each do |addr|
    ok(addr_spec, addr, 'normal-valid - ' + addr);
end

(invalid + valid_loose).each do |addr|
    not_ok(addr_spec, addr, 'normal-invalid - ' + addr);
end

# loose
(valid + valid_loose).each do |addr|
    ok(addr_spec_loose, addr, 'loose-valid - ' + addr);
end

invalid.each do |addr|
    not_ok(addr_spec_loose, addr, 'loose-invalid - ' + addr);
end