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#
# textutils.rb
#
# Copyright (c) 1998-2004 Minero Aoki
#
# This program is free software.
# You can distribute/modify this program under the terms of
# the GNU Lesser General Public License version 2.1.
#
module TMail
class SyntaxError < StandardError; end
module TextUtils
private
def new_boundary
'mimepart_' + random_tag()
end
@@uniq = 0
def random_tag
@@uniq += 1
t = Time.now
sprintf('%x%x_%x%x%d%x',
t.to_i, t.tv_usec,
$$, Thread.current.id, @@uniq, rand(255))
end
aspecial = '()<>[]:;.@\\,"'
tspecial = '()<>[];:@\\,"/?='
lwsp = " \t\r\n"
control = '\x00-\x1f\x7f-\xff'
ATOM_UNSAFE = /[#{Regexp.quote aspecial}#{control}#{lwsp}]/n
PHRASE_UNSAFE = /[#{Regexp.quote aspecial}#{control}]/n
TOKEN_UNSAFE = /[#{Regexp.quote tspecial}#{control}#{lwsp}]/n
CONTROL_CHAR = /[#{control}]/n
RFC2231_UNSAFE = /[#{Regexp.quote tspecial}#{control}#{lwsp}\*\'\%]/n
def atom_safe?(str)
ATOM_UNSAFE !~ str
end
def quote_atom(str)
(ATOM_UNSAFE =~ str) ? dquote(str) : str
end
def quote_phrase(str)
(PHRASE_UNSAFE =~ str) ? dquote(str) : str
end
def token_safe?(str)
TOKEN_UNSAFE !~ str
end
def quote_token(str)
(TOKEN_UNSAFE =~ str) ? dquote(str) : str
end
def dquote(str)
'"' + str.gsub(/["\\]/n) {|s| '\\' + s } + '"'
end
private :dquote
def join_domain(arr)
arr.map {|i| (/\A\[.*\]\z/ =~ i) ? i : quote_atom(i) }.join('.')
end
ZONESTR_TABLE = {
'jst' => 9 * 60,
'eet' => 2 * 60,
'bst' => 1 * 60,
'met' => 1 * 60,
'gmt' => 0,
'utc' => 0,
'ut' => 0,
'nst' => -(3 * 60 + 30),
'ast' => -4 * 60,
'edt' => -4 * 60,
'est' => -5 * 60,
'cdt' => -5 * 60,
'cst' => -6 * 60,
'mdt' => -6 * 60,
'mst' => -7 * 60,
'pdt' => -7 * 60,
'pst' => -8 * 60,
'a' => -1 * 60,
'b' => -2 * 60,
'c' => -3 * 60,
'd' => -4 * 60,
'e' => -5 * 60,
'f' => -6 * 60,
'g' => -7 * 60,
'h' => -8 * 60,
'i' => -9 * 60,
# j not use
'k' => -10 * 60,
'l' => -11 * 60,
'm' => -12 * 60,
'n' => 1 * 60,
'o' => 2 * 60,
'p' => 3 * 60,
'q' => 4 * 60,
'r' => 5 * 60,
's' => 6 * 60,
't' => 7 * 60,
'u' => 8 * 60,
'v' => 9 * 60,
'w' => 10 * 60,
'x' => 11 * 60,
'y' => 12 * 60,
'z' => 0 * 60
}
def timezone_string_to_unixtime(str)
if m = /([\+\-])(\d\d?)(\d\d)/.match(str)
sec = (m[2].to_i * 60 + m[3].to_i) * 60
(m[1] == '-') ? -sec : sec
else
min = ZONESTR_TABLE[str.downcase] or
raise SyntaxError, "wrong timezone format '#{str}'"
min * 60
end
end
WDAY = %w( Sun Mon Tue Wed Thu Fri Sat TMailBUG )
MONTH = %w( TMailBUG Jan Feb Mar Apr May Jun
Jul Aug Sep Oct Nov Dec TMailBUG )
def time2str(tm)
# [ruby-list:7928]
gmt = Time.at(tm.to_i)
gmt.gmtime
offset = tm.to_i - Time.local(*gmt.to_a[0,6].reverse).to_i
# DO NOT USE strftime: setlocale() breaks it
sprintf '%s, %s %s %d %02d:%02d:%02d %+.2d%.2d',
WDAY[tm.wday], tm.mday, MONTH[tm.month],
tm.year, tm.hour, tm.min, tm.sec,
*(offset / 60).divmod(60)
end
MESSAGE_ID = /<[^\@>]+\@[^>\@]+>/
def message_id?(str)
MESSAGE_ID =~ str
end
def mime_encoded?(str)
/=\?[^\s?=]+\?[QB]\?[^\s?=]+\?=/i =~ str
end
def decode_params(hash)
new = Hash.new
encoded = nil
hash.each do |key, value|
if m = /\*(?:(\d+)\*)?\z/.match(key)
((encoded ||= {})[m.pre_match] ||= [])[(m[1] || 0).to_i] = value
else
new[key] = to_kcode(value)
end
end
if encoded
encoded.each do |key, strings|
new[key] = decode_RFC2231(strings.join(''))
end
end
new
end
NKF_FLAGS = {
'EUC' => '-e -m',
'SJIS' => '-s -m'
}
def to_kcode(str)
flag = NKF_FLAGS[$KCODE] or return str
NKF.nkf(flag, str)
end
RFC2231_ENCODED = /\A(?:iso-2022-jp|euc-jp|shift_jis|us-ascii)?'[a-z]*'/in
def decode_RFC2231(str)
m = RFC2231_ENCODED.match(str) or return str
NKF.nkf(NKF_FLAGS[$KCODE],
m.post_match.gsub(/%[\da-f]{2}/in) {|s| s[1,2].hex.chr })
end
end
end
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